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HomeMy WebLinkAboutSupplemental Soils Report Vol II - 5/8/1989 n Y 1 • • SUPPLLMI NTAIISOII S ENGINEERING ENGINEERING'GEOI:OGIC INVESTIGATION, 4.. • . . . •.• , ,.,.'"..::i'...i.........,".:..":,-.•:,„...:,::,•:•..,:.,.H..,...,:",:....."-,.-:.;'....,.:.:'"-:::.,..,:,.:...::,...i.:..-..:..:......./......." PORTION OP RF'DHAVY1C I'RO,h?C'1', VESTING 77?N'1'ATPVL '1'ItACI MAP NOS. 23064, 231165, 23066.ANU 23067, RANCHO CALU,ORNIA, .COUNTY OI' RIVICRShI)E, CALIFORNIA ....VOLUMEII • WIVLOPMN'I COCO.(J-LAI AMERCAN•DLI CIIII .'; .110))) " . ,. . ,. .„ , . . . . May 8; 1.980, J.N. 298-8P • • ' BORING too BUCKET-AUGER Project : Red Hawk Location: Rancho California ' Soling Na : 1 Elevation: -- Drill Dote : 11/30/C\ Job No. ; 298-87 Lo9ged By: CB Driving We%Qtlf: 1600 lbs. p Below 25' ft: 750 lbs. I I .Q Descri Pion of M'ote�io/s 0 o kp o\ \ o P .to p\ \ v 30m .h\ oa I RESIDUAL SOIL Clayey Sand: Red-brown; sand fine grained; SC - ' moist to damp; loose to dense. - -- -- BEDROCK - PAUBA FORMATION I Silty Sandstone: Light brown; fine to medium — grained; some fine gravel; occasional 3 to 6-inch cobble; occasional thin interbed of — very fine Clayey Sand; damp; dense. I -10- @ 8.0 ft: Fine to coarse grained; very little gravel. 6 ® 113 7.5 90 I@ 15.0 ft: Fine to medium grained. @ 17.0 ft: Clean - very little silt; no ` Iinterbeds of Clayey Sand; dry. — -20 - 7 III 111 2.0 91 1 @ 22.0 ft: Fine to coarse grained with some gravel and occasional small cobble. I@ 26.0 ft: Increased gravel - about 10 to 15% --- with some 3 to 5-inch cobbles; becomes moist. I -30 - @ 30.0 ft: Brown Silty Sandstone: Very silty; 14 ® 123 13.7 95 trace of clay; moist and dense. I --- Total Depth - 32.0 feet --- No Groundwater Encountered INo Caving — y_ IEarth Research Associates Inc. I PLATE B-1 Z IBORING LOG BUCKET-AUGER Red Hawk Locaf/on Rancho California Project : Boring Na : 2 Elevation: -- Drill Dote : 11/30/87 Job Ha298-87 Cowed By: CB Diving Weight: 1600 lbs. u Pesci-io/ion of Materia/5 `^ c 3 0 .h\ v Q O� 0 C V tz N Q � 0 ' C: 1 J ki RESIDUAL SOIL • Silty Sand: Dark brown; sand fine to medium SM — Igrained; moist; loose to medium dense. BEDROCK - PAUBA FORMATION 7 ® 115 9.1 93 I -r--- Clayey Sandstone: Red-brown; fine to coarse grained; some fine gravel; moist and dense; occasional thin interbeds of fine Silty Sand; — -10 - decreased clay with depth. I@ 10.0 ft: Coarse grained Silty Sandstone with some clay binder. — @ 12.0 ft: Fine to medium grained. I — @ 13.0 ft: Trace of clay binder; some thin interbeds of coarse grained Sand. 10 ® 106 16.0 91 @ 15.0 ft: Fine grained; thin interbeds of I Clayey Sandy Silt and coarse Sand. — @ 19.0 ft: Sandstone: Light brown; massive; -20 - fine to coarse grained; slightly silty; gravel --- II' traces; damp; dense. @ 24.0 ft: Moist; light red-brown; trace of clay binder. @ 25.0 ft: Damp. 22 ® 116 5.0 92 @ 27.5 ft: Scattered 3 to 7-inch cobbles. I -30 -- . I Total Depth - 30.0 feet — No Groundwater Encountered No Caving I __ I IEarth Research Associates Inc. I . - PLATE B-2 3 IBOR/NG too BUCKET-AUGER Red Hawk Locat/ont Rancho California Project: ' Boring Na. : 3 Elevation -- Drill Dote 11/30/87 Job Ma ' 298-87 /o99eci By: CB Driving ReiQhf: 1600 lbs. Below 25 ft: 750 lbs. I N. G1 LL C I1 .� Oescrip7tion of Moterio/s 3 0 O o ,...L• qL O0) L •`� U C u sN-4 0 cr RESIDUAL SOIL Silty Sand: Dark brown; sand fine to medium SM' - -- Igrained; moist; loose. BEDROCK - PAUBA FORMATION Clayey Sandstone: Red-brown; fine to coarse I grained; some fine gravel; occasional 3 to 6-inch cobbles; moist; dense. — @ 2.5 ft: Light red-brown. ' -10 - - 10 - @ 3.0 ft: Decreased clay. 12 ® 110 8.7 90 @ 7.0 ft: Increased gravel and cobbles - about 10 to 20%. — I @ 10.0 ft: Very moist; decreased clay. — @ 14.0 ft: Conglomeratic Sandstone: Light red-brown; fine to very coarse grained; — ' clean; very little silt; about 10 to 20% _ coarse gravel and occasional 3 to 6-inch -20 - cobble; moist; dense. @ 16.0 ft: Mottled light red-brown and gray. 18 ® 123 9.8 96 I @ 18.0 ft: Increased gravel and small cobbles, about 20 to 25%; occasional thin interbeds -- of fine Clayey Sand. — @ 24.0 ft: Sandstone: Light brown; massive; fine to coarse grained; slightly silty; moist — and dense; occasional thin interbeds of fine I Silty Sand. — _30 _ @ 28.0 ft: Fine to medium grained. @ 31.0 ft: Silty Sandstone: Brown; fine 22 ® 109 8.8 92 ' grained; very silty; slightly clayey; - occasional thin interbeds of fine Clayey Sand and/or Sandy Silt; moist and dense. I _40 - I33 ® 114 6.6 94 I Total Depth - 42.0 feet — No Groundwater Encountered -- No Caving — IEarth Research Associates Inc. PLATE B-3 1 44 IBORIMG LOG BUCKET-AUGER Project: Red Hawk Local/on: Rancho California , Boring Na. : 4 Elevation: -- Drill Dote : 11/30/87 Job A17. ; 298-87 Logged By: CB Drivin� Weht 1600 lbs. p Be ow 2 ft: 750 lbs. II is mo I Q. Description of Maferio/s o o e o�UN 0 0 I O l� ' V O v l� RESIDUAL SOIL Silty Sand: Dark brown; sand fine to medium SM _ Igrained; moist; loose to depth. 7 BEDROCK - PAUBA FORMATION ' Silty Sandstone: Light brown; fine grained; _ slightly clayey; damp; dense. @ 9.0 ft: Thin interbed of coarse Sand. 1 -10- @ 9.5 ft: Fine to medium grained. 7 r 111 11.5 92 — @ 12.0 ft: Dry. —, I ' @ 17.0 ft: Sandstone: Light brown; fine to coarse grained; slightly silty; some fine — gravel; occasional 3 to 4-inch cobble; damp; -20 - dense. 8 ® 116 6.6 94 1 — -30- 30 r 112 7.2 90 1 Total Depth - 32.0 feet --- No No Groundwater Encountered INo Caving ' - ---, I . I .Earth Research Associates Inc. - / /) 9 73 // PLATE B-4 IBORING LOG BUCKET-AUGER Project; Red Hawk Location, Rancho California ' Boring No. : 5 E/eupf/on Drill Dote: 11/30/87 Job Ala ' 298-87 [o99eci By GB Driving ileil/ht: 1600 lbs. Below 25 ft: 750 lbs. I O -,L.l tb �� ' 1 Oesc/ipfiori of M,ntecib/s Au Q o o Q Q\ o O IBEDROCK - PAUBA FORMATION ISilty Sandstone: Light red-brown; fine grained; IIdry; dense. @ 6.0 ft: Sandstone: Light brown; fine to II ' --- coarse grained; slightly silty; gravel traces; dry; dense. II @ 8.5 ft: Layer of volcanic rock fragments. „ I -10- @ 9.0 ft: Conglomeratic Sandstone: Light brown and red-brown; fine to coarse grained; 12 116 8.9 90 slightly clayey; about 20 to 25% coarse .. gravel and 10 to 15% cobbles to 6 inches in " Isize; moist and dense; difficult to drill. III 15.5 ft: Silty Sandstone: Light brown; fine to medium grained; some fine gravel; damp and II I dense. IHI-20 - @ 20.0 ft: Fine to coarse grained; slightly Iclayey; damp and dense. 17 118 6.5 92 I In" @ 29.0 ft: Fine to medium grained; gravel _30_ traces; moist and dense. 22 II 113 12.5 90 I@ 33.0 ft: Sandstone: Light brown; fine to IIcoarse grained; slightly silty; gravel traces; damp and dense. II I I _40_ U 30 II 115 5.5 92 I Total Depth - 42.0 feet No Groundwater Encountered II • No Caving I .Earth Research Associates Inc: ' PLATE B-5 6 IBORING LOG HOLLOW STEM Red Hawk Rancho California Project : Location: IBoring No. : 6 Elevation: -- Drill Dote: 12/1/87 Job No. : 298-87 LO99ed By: CB Dr%V/ni heil 'it: 140 lbs. 4.4 g` :1'..-1.: o IDesc�i fion of Ma 1e�%a/s b In l.ul t u vila `J o • ": ,� P .4) p l'• 0 ; 4\ .h N QQ c o ° �o o . E I a � `° o`" °`v ALLUVIUM I _ Silty Sand: Dark brown; sand fine to medium SM/ _ grained; trace of clay; moist; loose. SC @ 3.0 ft: Silty Sand: Brown; sand fine to SM —' II grained; gravel traces; damp; loose. 1 SPT 2 117 I 6.2 _I _10_ @ 10.0 ft: Medium dense. 8 9 CORE 9 — 121 6.4 -- ' ' @ 15.0 ft: Loose. 2 2 ®-- SPT I3 — -- 8.2 -- _20 _ @ 20.0 ft: Loose; moist. 4 ' 5 CORE 9 T, 116 12.2 -- @ 25.0 ft: Sandy Silt: Light olive-brown with ML 510 SPT iron oxide staining; nonplastic; moist; very 16 -- 13.6 -- ' _1 stiff. — :30- @ 30.0 ft: Silty Sand: Olive-brown; sand SM/ 12 very fine to fine grained; some iron oxide mi. 18 F SPT ' staining; moist; dense. 16 — -- 14.2 -- BEDROCK - PAUBA FORMATION 18 SPT I Sandstone: Light brown; fine to coarse grained; 31 slightly silty; slightly damp; dense. 33 ® ' _40 I I ICont'd. on Plate B-7 — Earth Research Associates Inc. IPLATE B-6 IBORING toe HOLLOW STEM Project; Red Hawk Location, Rancho California I Boring No. : 6 Cont'd. Elevation: - Dail/ Dote : 12/1/87 Job Ab 298-a7 Lo9ged By: CB Driving Weight 140 lbs. I p C - �o 6 Egi ,. , p, �oN I 06,56.6o/ion of ,Wafer/o/s b • 0 L.h o o j 0 W m �\ \ Q I 4 l5 m O i V @ 40.0 ft: Increased silt; damp; dense. 14 III SPT I 23 -- 26 4.2 -- @ 45.0 ft: Thin interbeds of brown, fine grained Silty Sand; moist; dense. 2.8 0-- SPT -- 30 -- 9.2 @ 50.0 ft: Silty Sandstone: Brown; fine 22 Drove 12 inches I -50_ grained; moist; very dense. S3 SPT -- 12.3 -- I -. Total Depth - 51.0 feet No Groundwater Encountered I CODE: SPT = Standard Penetration Test CORE = 3-inch 0.D. ; 2.4-inch Z.D. I I _ I _ - .-. I • IEarth Research Associates Inc. IPLATE B-7 Q 0 I BORING toe HOLLOW STEM Red Hawk Location, Rancho California Project:I Boling No. : 7 Elevation: - amDO% 12/1/87 Job Mt298-87 L099ed By : CB Priv/nq I*, ht: 140 lbs. IC '• •••..c ' v Descrip/ion of Maier/a/5 v�S p C `^ o O 0 0 � a ALLUVIUM I Silty Sand: Darkbrown; sand fine to medium SM — grained; moist; loose. @ 3.0 ft: Damp T 4 SPT ' 3 -- 6.6 -- @ 7.0 ft: Silty Sand: Light brown; fine to SM/ 3 - coarse grained; slightly clayey; intermediate SW layers of coarse, clean Sand; moist; loose. I -10 - 4CORE - W - 117 9.0 v @ 13.0 ft: Groundwater 8 — I = BEDROCK - PAUBA FORMATION — Sandstone: Light brown; fine to coarse grained; 8 SPT wet; dense. 14 ®-- -- 16.6 -- I @ 18.0 ft: Fine to very coarse grained; some 18 clay; wet; very dense. 7 CORE -20 - 16 1r- 116 17.1 I 18 - I50 ---Drove 5 incl es SPT -- 12.6 -- Total Depth - 25.5 feet I - - Groundwater at 13.0 feet CODE: SPT = Standard Penetration CORE = 3-inch O.D. ; 2.4-inch I.D. 1 _ - _ k 1 --- - I .Earth Research Associates Inc. I PLATE B-8 9 BORING LOG HOLLOW STEM I Red Hawk Rancho California Pr-elect:� Lowborn IBoring Na : $ Elevpf/on -- Drill Dole : 12/1/87 Joh Ilb. : 298-87 togged By: CB Driving Weight: 140 lbs. I I tl v Zp cn o Y. Descrip7`iorl. of Moterio/s o o Q �� C. 0 CV � mu � t\- act ' O 1. Q V ALLUVIUM _ Silty Sand: Dark brown; sand fine to medium SM ' grained; moist; loose. @ 5.0 ft: Brown; loose. 3SPT ' 1.42- 4.1 -- @ 9.0 ft: Some fine gravel. 4 I -10- @ 10.0 ft: Sand: Light brown; fine to medium SW/ 4CORE grained; silty; intermediate lenses of fine SM 7 N 109 3.6 -- to medium Silty Sand; slightly damp; medium 12 -' dense. @ 15.0 ft: Sand: Light brown; fine to coarse SW 5SPT grained; some fine gravel; dry; medium dense. 6 N -- 2.1 -- ' 7 — -20 - @ 20.0 ft: Sand: Brown to light red-brown; SW/ 6 CORE I fine to medium grained; silty; 11 115 3.2 -- occasional SM 11 — thin lenses of fine to medium Silty Sand; slightly damp; medium dense. _ ' @ 25.0 ft: Silty Sand: Light brown; fine SM 4 4 p SPT - grained; intermediate lenses of coarse sand; F -- 8.5 damp; medium dense. 6 I _30 - @ 30.0 ft: Sand: Light brown; fine to medium SP 7 — SPT grained; slightly silty; damp; medium dense. O -- 3.9 -- @ 35.0 ft: Sand: Light brown; fine to medium SM 8 SPT ' grained; slightly silty; damp; medium dense. 14 -- 2.7 -- 14 II _40 if 21 Cont'd. on Plate B-10 IEarth Research Associates Inc. I - PLATE B-9 10 z5OR/NG LOG HOLLOW STEM Project, Red Hawk Location: Rancho California ' Boring No. : 8 Cont'd. Elevation Drill Dole: 12/1/37 Job /'.b. 293-87 Lowed Lay CE Driving Weight: 140 lbs. I4.....: Q 2: '"\ ' u Descripfioo of Materia/s b Q c 3 0 �� 0 .-.4 Q p �U C � 0 �O o p03 I c:), 7 � m p" l0 @ 40.0 to 41.0 ft: Silty Sand: Brown; sand SM 3 1 SPT ' fine grained; moist; medium dense. 4 - -- 17.6 -- @ 41.0 ft: Clayey Silt: Brown; sandy; wet; ML 7 stiff. 10 SPT @ 45.0 ft: Sand: Light brown; fine to medium SP 13 -- 2.9 ' - grained; slightly silty; dry; medium dense. 13 — 10 SPT -50 - @ 50.0 ft: As above; dense. SW 161r— -- 3.5 La -- Total Depth - 51.5 feet No Groundwater Encountered — CODE: SPT = Standard Penetration Test — CORE = 3-inch 0.D. ; 2.4-inch I.D. I r--- I -- . — I I I - _ I Earth Research Associates Inc IPLATE B-10 If ' BORING LOG HOLLOW STEM P/O�ec/ : Red Hawk Locof/on Rancho California ' Boring Na: 9 Peva/lop - D/7// Dole 12/1/87 Job Ha ' 298-87 [o99eci By CB Driving Weight: 140 lbs. SrN No Q ` ,-...i..: ti) ' L. vt t Descrip//ori of Mo/erio/s p c o m Qt. tf &j ° utcotil • Fo I S () C) l) ALLUVIUM Silty Sand: Dark brown; sand fine to medium SM --- I grained; moist; loose. @ 3.0 ft: Brown; damp; medium dense. @ 5.0 ft: Brown; damp; medium dense. 5 .1 SPT ' 6 Or- -- 4.6 -- 8 -10- @ 10.0 ft: Brown; damp; medium dense. 7 CORE 8 107 5.8 13 --- I' @ 15.0 ft: Brown; damp; medium dense. 5 SPT 6 . -- 4.4 -- 6 ' _ _20 _ @ 20.0 ft: Sand: Light brown; fine to coarse SW 8CORE ' grained; slightly silty; some fine gravel; 14 1107 2.3 -- dry; medium dense. 15 ' @ 25.0 ft: Sand: Light brown; fine to medium SW/ 8 m SPT grained; silty; slightly damp; medium dense. SM 11 ® -- 3.3 11 I -30 - @ 30.0 ft: Sand: Light brown; fine to medium lSPT grained; silty; slightly damp; medium dense. 15 2.2 - ' BEDROCK - PAUBA FORMATION - Silty Sandstone: Light reddish-brown; fine to medium grained; clayey; damp; dense. 19SPT ' 23 �--- - 9.6 -- @ 38.0 ft: Very dense and difficult to drill. 29 ' - - Total Depth - 33.0 feet -._, No Groundwater Encountered I CODE: SPT = Standard Penetration Test CORE = 3-inch O.D. ; 2.4-inch I.D. IEarth Research Associates Inc. IPLATE B-11 HOLLOW STEM ' BOR/NG LOG STEM Project: Red Hawk Location: Rancho California ' Boring Na : 10 Elevation Mill Dote: 1211187 Job Aga ' 298-87 Lo99ed By : CB Driving We7-9171: 140 lbs. ' $ 11� ' Q Oescrip/`ion of Material .0 o 3 a 0 o .. ALLUVIUM Silty Sand: Dark brown; sand fine to medium SM ' grained; moist; loose. --- @ @ 5.0 ft: Dark brown; sand fine to medium 4 ' grained; moist; loose. 3 SPT -- 6 4.8 I -10- @ 10.0 ft: Clayey Sand: Reddish-brown; sand SC 9CORE - fine to medium grained; damp; medium dense. 14 • 117 5.5 @ 12.0 ft: Silty Sand: Light reddish-brown; SM/ 19 — ' fine to coarse grained; some clay; some fine gravel; damp; medium dense. 8SPT ® 8 -- -- 4.7 -- ' 7 BEDROCK - PAUBA FORMATION Silty Sandstone: Light reddish-brown; fine to 23 CORE 112 7.6 ' coarse grained; moist; very dense. 50 ft= 31/2 inches Total Depth - 21.5 feet — ' No Groundwater Encountered CODE: SPT = Standard Penetration Test ' - - CORE = 3-inch 0.D. ; 2.4-inch I.D. 1 t - 1 IEarth Research Associates Inc. I C 9 9 PLATE B-12 ' BOR/NG toe HOLLOW STEM Red Hawk Location: Rancho California Project , ' Boring No. 11 Elevation: -- Drill Dote : 12/2/87 JobNo. ; 298-87 Lo9ged By: CB Driving height: 140 lbs. ' C N V. Pescri /iori of NIa lerio/s v 0 C.h o 1 . '0 k P v 3 h� a ' o � �' ( 4 v ALLUVIUM Silty Sand: Brown; sand fine to medium SM _ I grained; slightly clayey; moist; loose. @ 3.0 ft: Clayey Sand: Brown; sand fine to SC --- medium grained; dry; dense; slightly porous. 8 mi SPT I 16 -- 3.0 -- 21 I -10 - @ 10.0 ft: Clayey Sand: Brown; sand fine to 14 CORE - medium grained; dry; dense; slightly porous. 16 1121 5.4 16 -- I @ 14.0 ft: Silty Sand: Brown; fine to medium SM/ --- grained; clayey; moist; medium dense. SC 4 SPT @ 16.0 ft: Thin layer of gravel. 6 II- -- 9.1 -- I@ 18.0 ft: Clayey Sand: Brown with some iron SC 7 — oxide staining; very fine to fine grained; - 20- very moist; dense. 10 mir, CORE — @ 20.0 ft: Clayey- Sand: Brown with some iron 16 101 24.7 -- oxide staining; very fine to fine grained; 22 very moist; dense. ~ I @ 25.0 ft: As above with thin intermediate SC/ 6 SPT lenses of fine Silty Sand; very moist; dense. SM 7 -- 21.9 -- 11 I -30- @ 30.0 ft: Silty Sand: Brown; sand fineSM 8 SPT grained; very moist; dense. 14 -- 22.1 -- 17 I @ 35.0 ft: Sand with Gravel: Light brown; SW coarse coarse grained; moist; dense. 12 An SPT I BEDROCK - PAUBA FORMATION 29 -- 6.9 -- Sandstone: Light reddish-brown; fine to coarse 37 grained; slightly silty; damp; dense. -` I 16 SPT -40 - 22 -- 4.9 -- 75 I Total Depth - 41.5 feet No Groundwater Encountered — CODE: SPT = Standard Penetration Test I CORE = 3-inch 0.D.; 2.4-inch I.D. ,Earth Research Associates Inc. I . PLATE B-13 HI ' BOR/NG LOG HOLLOW STEM Project: Red Hawk Locations Rancho California ' Boring No. : 12 Elevation Drill Dofe 12/z/87 Jobb. 298-87 Lo99ed By: CS Driving Weight 140 lbs. I Q. Descr ip>`ion of NIo`ecio/s Q h o 0 0 0 0 1,-' .tuV pOm c O � F ALLUVIUM ' Silty Sand: Dark brown; sand fine to medium SM/ grained; clayey; damp; loose. SC @ 5.0 ft: Dark brown; sand fine to medium 7 I SPT I II clayey; damp; loose; medium dense. 12 -- 7.1 __ @ 8.0 ft: Moist. 11 I I -10- 0 10.0 ft: Silty Sand: Brown; fine to medium SM 6 CORE -- grained; very slightly clayey; moist; medium 6 III' 114 8.6 dense. 8 I @ 12.0 ft: Silty Sand: Light brown; sand fine SM ' to medium grained; moist; medium dense. @ 15.0 ft: Sand: Light brown; fine to coarse SW/ 5 SPT grained; silty; moist; medium dense. SM 6 - 7.9 -- I0 17.0 ft: Thin layer of gravel. 8 - 20- 0 20.0 ft: Silty Sand: Brown; sand fine to SM 6 CORE ' medium grained; moist; medium dense. 10 �■ 112 8.8 -- 11 ®• I 0 25.0 ft: Silty Sand: Brown; sand fine to 3 medium grained; moist; medium dense; slightly 3 ' SPT -- 16.6 -- cleaner (less silt) . 6 I 0 29.0 to 30.5 ft: Gravelly; very dense. 30- @ 30.5 ft: Clayey Sand: Brown; sand fine 26e SPT grained; moist; dense. 16 ■I -- 11.7 -- I —13 0 35.0 ft: Clayey Sand: Brown; sand fine 15 SPT Igrained; moist; very dense. �3-3S4 1 -- 12.5 -- Total Depth - 36.5 feet I ' - - No Groundwater Encountered ` CODE: SPT = Standard Penetration Test ' I CORE = 3-inch 0.D. ; 2.4-inch I.D. I • ' Earth Research Associates Inc, I PLATE B-14 1 5 II Red LOG HOLLOW STEM Project ; Red Hawk Location( Rancho California ' Boring No. : 13 Elevation: Drill Date: 12/2/87 Job No. ' 298-87 Logged By: c8 Driving Refight: 140 lbs. I $ � moo: I ` u Descripfion of Ma/erio/s 0 o e H ., j z v Qum �\o" o mF QC 14 ALLUVIUM — Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose. @ 3. 0 ft: Brown; moist; loose. 4 SPT @ 5.0 ft: Damp; loose. 4 - 4.5 Ti -- I -10 - @ 10.0 ft: Silty Sand: Brown; fine to medium SM 5CORE 10 - grained; moist; medium dense. y 118 7.8 - I0 15.0 ft: Silty Sand: Brown; fine to medium SM 3SPT grained; thin intermediate lenses of fine to 3 ' 9. 2- - ' coarse Sand; moist; loose. -20- 0 20.0 ft: Sand: Light brown; fine to coarse SW/ 5 CORE ' silty; 7 113 10.2 -- grained; moist; medium dense. SPS 10 I - 0 25.0 ft: As above; occasional thin inter- 4 SPT - mediate lenses of fine Clayey Sand. 7 -- 6.0 10 -30- @ 30.0 ft: Silty Sand: Light brown; sand fine SM/ 3 1r_ SPT grained; thin intermediate lenses of very SC 4 - 12.6 -- I fine to fine Clayey Sand; very moist; loose 4 to medium dense. 7SPT @ 35.0 ft: Silty Sand: Light brown; fine to SM -6- I8.8 I medium grianed; thin intermediate lenses of 5 — _ fine to medium sand; moist; medium dense. 0 37.0 ft: Clayey Sand: Brown; sand fine to SC I -40 medium grained;;very moist;7medium dense. r I Cont'd. on Plate B-16 .Earth Research Associates Inc. IPLATE B-15 /`0 IBOR/NG 106 HOLLOW STEM project ; Red Hawk Location: Rancho California IBoring No. : 13 Cont'd. Elevation -- Drill Date: 12/2/87 Job b ° 298-87 [o99ed By: CB Driving Weight: 140 lbs. I Descri tion of M,ote�io/s " k v 0 c P Q o e O\ .h\ Q C 0 tiV C � � m �� NF @ 40.0 ft: Sand: Light brown; fine to medium SM 4 ' SPT grained; thin intermediate lenses of fine to 5 — -- 7.4 -- Imedium Sand; moist; loose. 5 @ 45.0 ft: Silty Sand: Light brown; sand SM 5 SPT fine to medium grained; moist to wet; loose. 5 II _, -- 9.2 -- ' v @ 47.0 ft: Groundwater. 7 5 SPT - 50- @ 50.0 ft: Medium dense. -Cor- -- 17.0 - 12 I Total Depth - 51.5 feet Groundwater at 47.0 feet CODE: SPT = Standard Penetration Test ICORE = 3-inch 0.D. ; 2.4-inch I.D. _ 1 I — 1 - - • -- • I - - _., • I Earth Research Associates Inc. IPLATE B-16 17 ' GORING LOG BUCKET-AUGER Project Red Hawk Location, Rancho California 111 Boring Na14 Elevation: -- Drill Dole: 12/15/87 Job Ma ' . 298-87 Lo9gecl By: CB Driving Wejot: 1600 lbs . I u Descry //or/ of Mo/ech/s 0 3 0 oc4 '4 Q ALLUVIUM Silty Sand: Light brown; sand fine grained; SM Imoist; loose to medium dense. - ---- @ 4.5 ft: Sand: Light brown; medium grained; SP clean; poorly graded; occasional fine gravel; 4 ® 108 2.8 Idamp; medium dense. -10- 5 ® 103 4.1 4 ® 102 3.9 ' --- @ 17.0 to 24.0 ft: Thin interbeds of dark SM brown Silty Sand, Clayey Sand, and Clayey to _ 20 Silt; wet; medium dense. ML ` 1 ® 98 14.5 I @ 24.0 ft: Sand: Light gray; medium grained; SP clean; poorly graded; moist; medium dense. I6 III 101 7.3 Total Depth - 26.0 feet I - - Slight Caving No Groundwater Encountered I 1 I .Earth Research Rssociates Inc, PLATE B-17 I IS IBORING LOG BUCKET-AUGER Red Hawk Locations Rancho California Project ' Borism No. : 15 Elevation: -- Drill Dote 12/15/87 JobAb. : 298-87 Lo99ed By: GB Driving Weiq/it: 1680 lbs. C N kti OescriPfion of Mo`erio/s l� V ti o '� Q v3u° m p� .h\ OQ IO L5 m D " V ALLUVIUM Sand: Light brown-gray; medium grained; SP/ I slightly silty; poorly graded; moist; medium SM dense. -11 @ 5.0 ft: Clean. SP 3 ® 108 1.8 ' 1 -10- 4 ® 98 2.2 0 11.0 ft: Damp. @ 12.0 ft: Occasional, infrequent lenses of Clayey Sand and ClaYey Silt. @ 15.0 ft: Slightly silty and well-graded. SW/ 3 ® 101 6.2 0 17.0 ft: Decreased Clayey Sand and Clayey SM' Silt lenses. --- -20 -.-20 - 6 ® 105 5.1 1 ' @ 25.0 ft: Poorly graded. 7 ® 101 6.5 I Total Depth - 26.0 feet Slight Caving --- No -No Groundwater Encountered . -- I — I Earth Research Associates Inc. IPLATE B-18 1 BORING LOG BUCKET-AUGER Project: Red Hawk Location, Rancho California I Boring No. : 16 E/e✓anon - Drill Da fe 12/l5/s7 Jobb ' 298 87 Lowed By: GB Driving We,yhf: 1680 lbs. I $ 9 kt a I u Oescri,o/ion of Ma ler/o/s Q Lc a ti o o Q . a Cto U efk � u �� ` ALLUVIUM Clayey Sand: Brown; sand fine to medium SC 11- grained; moist; medium dense. I II II I - 5 - II 3 I 120 11.8 @ 6.0 ft: Very moist; becomes clavier with II increased depth. 1 H 11v -10 SandY Clay: Red-brown; sand fine grained; CL . 4 I 115 13.3 I moist; medium stiff. 11 _ Clayey Sand with Gravel: ' Red-brown; sand fine SC I to coarse grained; very moist; medium dense. II Silty Sand: Red-brown; sand fine to medium SM/ grained; slightly clayey; very moist; medium SC II ' 15 dense. _ Silty Sand with Gravel: Light brown; sand SM 11 to coarse grained; some small cobbles; very II moist; medium dense. I Silty Sand: Light brown; sand fine grained; SM -20 moist; dense. H . ' Cont'd. on Plate B-20. 11 II I .Earth Research Associates Inc. I PLATE B-19 20 IBORING LOG BUCKET-AUGER Project: Red Hawk Location: Rancho California I8orinq No. : 16 Cont'd. Elevation. -- Drill Pak: 12/15/87 Job No. ; 298-87 Lo9ged By: CB Driving Iyeiiht: 1680 lbs. @ 25 ft: 750 lbs. ' v Description of Maferio/s Q h o Q �� h o 0-� ' 4 L5 eu 4 h SM 7 111 105 11.6 1 @ 22.0 ft: Sand fine to medium grained. I . — Sand: Light brown; fine to coarse grained; SW 1 -25 - clean; damp; dense. 15Ir- 105 3.2 IITotal Depth - 26.0 feet No Caving _ —^ No Groundwater Encountered I 1 1 _ _ _. 1 • - I .Earth Research Associwtes Inc. . PLATE B-20 I ,SORING LOG BUCKET-AUGER Project ; Red Hawk Location: Rancho California I Boring No. : 17 Elevation -- Drill Dote: 12/15/87 Job /sb. : 298-87 /awed By: CB Driving Weight: 1680 lbs. ' Descri tion of Mo/ecia/s Q o o o\ o 0 1 P m *0 �a � r ALLUVIUM ' Silty Sand: Brown; sand fine to medium SM/ ____ grained; slightly clayey; moist; loose to SC 2.0 feet; medium dense below. — 3 [ 116 8.3 1 — Silty Sand: Light brown; sand fine to medium -10- grained; gravel traces; moist; medium dense: SM 3 . 114 7.8 I — _._ -15- 3 [ 113 9.4 1 _ II -20----- I- ICont'd. on Plate B-22 I .Earth Research Rssocb►tes Ina IPLATE B-21 q eld IBORING [OG BUCKET-AUGER Project: Red Hawk Locotionr Rancho California IBoring No. : 17 Cont'd. Elevation: -- Drill Dote: 12/15/87 Job /fib. : 298-87 Lo99ed By : CB Div/ng We74ht: 1680 lbs. 25 ft. and Below: 750 lbs. 9iti: & 1� I Descrip/ion of Materio/s 0 o Q O� h o ' @ 20.0 ft: Very moist; trace of clay. SM 3 ® 105 14.9 I@ 22.0 ft: Wet. — ' — ' -25- 8 r 104 22.0 Clayey Sand: Brown; sand very fine to fine SC/ Igrained; very silty; very moist; dense. ML — I Silty Sand: Red-brown; sand fine to medium SM/ -30- grained; some clay; moist; dense. SC 1 15 III 112 14.0 @ 32.0 ft: Lenses of Clayey Sand and Clayey — ISilt. — — Silty Sand: Brown; sand fine to medium SM — I - 35- grained; moist; dense. 16 r 114 10.2 I — Total Depth - 36.0 feet No Caving _ No Groundwater Encountered 1 - . I .Earth Research flssodates Inc. • PLATE B-22 23 I BORING LOG BUCKET-AUGER Project; Red Hawk LOCation; Rancho California I Boring Na : 18 Elevation all/ Dote: 12/15/87 Job /� ° 298-87 Lo99eci By CB Driving Weight: 1680 lbs. I Descri fior7 of Mote�io/s Q h o Q� 0 0 �. P m h ' a ' ALLUVIUM 1 Silty Sand: Brown; sand fine to medium SM - grained; moist; medium dense. I I - 5 2 II: 103 3.8 II@ 9.0 ft: Lenses of coarse gravel. - -10 ' Sand: Light brown; fine to coarse grained; SW/ 4 109 5.3 silty; some fine gravel; moist; medium dense. SM Il -15 - 7 IF: 105 8.1 I _ - '- - ' 20 I I _ Cont'd. on Plate B-24 — • IEarth Research Associates Inc I PLATE B-23 a7tL BUCKET-AUGER I OORING LOG Project: Red Hawk Location, Rancho California IBoring No. : 18 Cont'd. Elevation: -- Drill Dole , 12/15/87 Job Lam• ; 298-87 Lo ecl B GB 1680 lbs. 99 y � D�ivinq We�ht� 25 ft. and elow: 750 lbs. I w Descrip/ioq of Matech/s E o e a o c- 1 ,, � v Sum v, � a I .I C1 kb SS?/ 5 r 111 9.1 SM I@ 22.0 ft: Very moist; traces of very thin --- Clayey Clayey Sand Lenses. I - @ 23.0 ft: Intermediate lenses of fine to medium grained Silty Sand. ' -25 - 13 r 112 15.0 II Sand: Light brown; fine to coarse grained; - SW/ - 30- silty; very moist; medium dense. SM ' 6 [ 113 7.7 II Sand: Light brown; fine to medium grained; SP wet; dense. I - 35 ----, 20 III 105 12.1 r---- _ -40- 20 r 99 11.9 I _ Total Depth - 41.0 feet No Caving No Groundwater Encountered _ I .BirthResearch Associates Inc. PLATE B-24 c;"s I ,50RING LOG BUCKET-AUGER Project: Red Hawk LoCatiorlt Rancho California ' Borirq No. : 19 Elevation: Drill Dote' 12/15/87 Job M. ' 298-87 Lo99ecl By: CB Driving Weight: 1680 lbs. I . . 1 Oescrip/ion 'of Materia/s o o e o o ; c) ° ° � moo . . of ALLUVIUM SM 1 Silty Sand: Dark brown; sand fine to medium — IIgrained; moist; loose. II @ 3.0 ft: Light brown; damp; gravel traces; _. medium dense. II - 5 - @ 5.0 ft: Thin intermediate layer of dark brown, gravelly Clayey Sand. 12 [ 115 3.1 1 -10 - II 10 - 6 117 105 2.5 I -15 - @ 15.0 ft: Moist. 3 III 104 6.5 II -20 -f I Cont'd. on Plate B-26 1 _Earth Research Associates Inc. IPLATE B-25 ' 2/0 I3ORING LOG BUCKET-AUGER Project: Red Hawk Location, Rancho California Iming Na. : 19 Cont'd. Elevation: - Drill Dofe 12/15/87 Job Ab.: 298-87 Logged By: CB 1680 lbs. q9Driving Weight 25 ft. and Blow: 750 lbs. I , � t ,� �� '''s (3 .� Descc/o//bn of �'Iotecia/s 0 l. a e e `Q v C oum \c o . o SM 7 IL 111 11.9 II@ 22.0 ft: \ Slightly finer grained; very moist. ' -25- 15Ir- 112 11.8 Gravelly Sand: Light brown; fine to coarse SW/ I ,-- grained; silty; some small cobbles; very moist; SM dense. -30 - @ 30.0 ft: Wet. I — - 15 1 113 11.8 I @ 33.0 ft: Increased cobbles; difficult to drill. I -35 - Total Depth - 33.0 feet (Refusal) No Caving _.., No Groundwater Encountered II I - r -- . ---- _Earth Research Associates Inc. IPLATE B-26 e/ , ' BORING LOG BUCKET-AUGER Project; Red Hawk Location, Rancho California IBoring NO. : 20 Elevation: -- Drill Dole: 12/15/87 Job Ala ' 298-87 Logged By: CB Driving /i/eiyht: 1680 lbs. I . ' u Descripfior7 of Maieria/s y Q" :31 o Q O� o v 0 o lc J O s I II �' V ALLUVIUM Silty Sand: Dark brown; sand fine grained; SM — dampl loose to medium dense. 11 Clayey Sand: Dark brown; sand fine to medium SC grained; moist; medium dense. I - 5 - 2 [ 111 8.6 1 — — Silty Sand: Brown; sand fine to medium SM/ — grained; slightly clayey; gravel traces; SC moist; medium dense. -10 Sand: Brown; fine_ to mediumsilty; I grained; SP/ 2 103 5.0 gravel traces; moist; medium dense. SM I I Silty Sand: Brown; sand fine to medium SM - 15- grained; gravel traces; very moist; medium dense. 7 r 109 10.5 ISand: Light brown; fine to coarse grained; S11 slightly silty; gravel traces; moist; medium — dense. -20 1 I ICont'd. on Plate B-28 I __ .Earth Research Rssodatea Inc. IPLATE B-27 o/ g • ' • BORING too BUCKET-AUGER I Project Red Hawk Location/ Rancho California ' Bering Na : 20 Cont'd. E/evafion - Drill Dote 12/15/87 Jobb• ° 298-87 Logged By: CB Driving Weight: 1680 lbs. 25 ft. and low: 750 lbs. I k Descrip>`ion of Mnferio/s o E).o O 6 o .Q tb J U c Ct. r4 � 0 I v SW 4 ' 108 14.5 I Silty Sand: Brown; sand fine to medium — —J grained; very moist; dense. • I I -25 - 15 [ 113 16.3 IGravelly Silty Sand: Brown; sand fine to SM _, medium grained; wet; dense. — ISand: Light brown; fine to coarse grained; SW 30 - gravel traces; slightly silty; wet; dense. I r-- 15 [ 105 9.3 — I -35 - 17 r 111 12.8 ITotal Depth - 36.0 feet — No Caving Ir---. No Groundwater Encountered — I � �. I — I . .Ec►rah-Research Reiociates Inc.. ' / e 029791/ PLATE B-28 c)9 r BORING LOG BUCKET AUGER Project= Red Hawk, Tract No. 23063 Location: Rancho California IBoring No. : 21 Elevation? -- Drill Dote: 10/10/88 Job/ 298-87 [oggeci By CB Driving WekKPJub: 1680 lbs. 1 Below 2'S ft: 750 lbs. s 'ILL.tc Descripfion of Morerio/s o 0 0 h o e V .,6. a ,� Pk `�U C � � � Op � E O l� J r 4v � l0 ALLUVIUM I — Silty Sand: Brown; sand fine to medium SM grained; damp; loose. 1 PushIL 108 7.2 1 - 10- @ 10.0 ft: Sand; light brown; fine to coarse SW 2 106 12.8 grained; some gravel; moist; medium dense. Ir 1 BEDROCK - PAUBA FORMATION Sandstone: Light brown; fine to coarse 6 L 108 9.6 1 grained; locally gravelly; moist; dense. - -20 - 12 Ir 109 9.9 8 L 105 8.4 0 27.0 ft: Iron oxide staining. 0 27.5 ft: Silty Sandstone; light brown; fine grained; slightly micaceous; moist; dense. -30- 0 29.0 ft: Sandstone; light brown; fine_ to coarse grained; some gravel; moist; dense. 16 115 7.6 ITotal Depth - 31.0 feet No Groundwater 1 No Caving 1 - - I - 1 I I PLATE B-24 Petra Geotechnical, Inc. 10 I ,5ORING LOG BUCKET AUGER Red Hawk, Tract No. 23063 Project L3oririg Na : 22 Elevation Locotionr Rancho California-- Drill Dote: 10/10/88 Job No. ' 298-87 Lo99ed By: CB Driving g%Clht: 1680 lbs. 1 , A9 t-‘ �� n`, ,a ' .0 Descri /ion of Molerio/s 0 0>-:o k, t. o P 3 m �� � a y u o � t•o o . . 4<.I F SiltyISM ' — Silty Sand: Brown; sand fine to medium SM grained; dry; loose. ' @ 2.5 ft: Clayey Sand; brown; sand fine to SC medium grained; moist; dense. ' - 5 - @ 6.0 ft: Silty Sand; brown; sand fine to 2 117 108 11.4 medium grained; trace of clay; moist; medium dense. — - -10- 1 4 li 114 11.7 @ 11.5 ft: Layer of gravel and small cobbles. 1 — BEDROCK - PAUBA FORMATION Sandstone: Light brown; fine to coarse — grained; trace of clay; moist; dense. -15 - 1 9 117 109 8.9 @ 18.5 ft: 15 ro 20% gravel; some small cobbles; becomes very dense. — 1 -20 ' Total Depth - 20.0 feet = No Groundwater No Caving • I IPetra Geotechnical, Inc. PLATE B-30 -3/ ' ,ORING LOG BUCKET AUGER II Red Hawk, Tract No. 23063 -- Rancho California Prosect' Locations Boring Na : 23 ElevationDrill Dote: 10/10/88 Job Ab.; 298-76 Lo99ed By: CB Driving 147071c: 1680 lbs. 1 i• • ' . 4 k1. .%%4 t Descripfiorl o} Materia/s Su _p 0---,‘4`^ o Q7:1 O 0in o 0 C') t•-. " V I ALLUVIUM Silty Sand: Brown; sand fine to medium SM — grained; dry; loose. ' @ 2.0 ft: Damp; medium dense; trace of clay. — 1 S — _ 4II: 116 6.7 I@ 7.0 ft: Cobbles --- I I BEDROCK - PAUBA FORMATION Clayey Sandstone: Light brown; fine to coarse — grained; 15 to 20% gravel and small cobbles; I -10 - moist; dense. 8 III 122 10.2 I @ 12.0 ft: Sandstone; light brown; fine to — coarse grained; trace of clay; moist; dense. 0 -15 - 0 10 1r- 108 8.6 Total Depth - 16.0 feet — 1 No Groundwater — No Caving 1 - - _ II - IPetra Geotechnical, Inc. PLATE B-31 3a I5ORING LOG BUCKET AUGER Red Hawk, Tract No. 23063 Rancho California Project; Locationr IBoring No. : 24 Elevation: -- Drill Date: 10/10/88 Job N9. ; 298-87 Logged LBy: CB Driving Weight: 1680 lbs. I l u Descrip/ion of Materia/s .coTIP, %-:;>::“) o� h o �'I I irk. Pk v ALLUVIUM I Silty Sand: Brown; sand fine to medium SM —. grained; dry; loose. @ 2.0 ft: Moist; medium dense. I - 5 BEDROCK - PAUBA FORMATION . 125 9.3 --. Clayey Sandstone: Brown;; fine to coarse —111E5 grained; some gravel; moist; dense. — @ 8.0 ft: Increased gravel; some small 0 — cobbles. @ _ 9.0 ft: Sandstone; light brown; fine to coarse grained; trace of clay; some gravel; -10- moist; dense. 5 [ 106 12.5 ii �, - -15- a @ 16.0 ft: Silty Sandstone; brown; fine 10 IF- 117 15.8 grained; moist; dense. -20- @ 20.0 ft: Damp; dense. 9 ® 109 6.2 ITotal Depth - 21.0 feet ,_ No Groundwater No Caving _ iPetra Geotechnical, Inc. PLATE B-32 33 I ,5ORING LOG BUCKET AUGER I Project: Red Hawk, Tract No. 23063 Location: Rancho California Boring No. : 25 Elevation Drill Dote: 10/10/88 Job No. ; 298-87 Lo99ed By: CB Driving Weight: 1680 lbs. 1 _ o I 6 knk 1� c Descrip/ion of Moferio/s 0 0 h o Q v .1 o :11 Z. 3 m o , oa I cic. elk o l7 S c''' O� Q`V - ALLUVIUM Silty Sand: Brown; sand fine to medium SM — grained; dry; loose. 1 — @ 2.0 ft: Trace of clay; moist; medium dense. - I BEDROCK - PAUBA FORMATION 5 - Sandstone: Light brown; fine to coarse grained; trace of clay; some gravel; damp; 4 1r 117 4.3 I - dense. - - @ 8.0 ft: 15 to 20% gravel and cobbles. _ -10- @ 10.0 ft: Light red-brown; decreased gravel. I-- 8 III112 8.0 @ 13.0 ft: Increased gravel and cobbles - 20%. --- 0 • - 15- .—. @ 16.0 ft: Silty Sandstone; brown; fine grained; slightly micaceous; moist; dense. 16II: 115 10.1 Total Depth - 18.0 feet — No Groundwater No Caving . I PLATE B-33 Petra Geotechnical, Inc. 13ORING LOG BUCKET AUGER ' Red Hawk, Tract No. 23063 -- Rancho California Project: Locationr Loring No. : 26 Elevation Drill Dote: 10/11/88 Job 1st.' 298-87 Lo9ged By: CB Driving Weight: 1680 lbs. 1 ‘ . b I •i Desccip/iorc of Moteria/s b 0'o e Q\ o 1 k) isk U IV() C;) (4<t (4< v I ALLUVIUM Silty Sand: Brown; sand fine to medium SM — grained; fairly clean - low silt content; ' _ @ dry; loose. _ @ 2.0 ft: Damp; medium dense. I@ 5.0 ft: Trace of clay. 1 III 116 10.4, I — — S I -10 - Top [ 113 11.5 I _ @ 11.5 to 14.0 ft: Scattered gravel. I — .-15- 0 — 1 . 111 10.0 D — BEDROCK - PAUBA FORMATION -20 - Sandstone: Light red-brown; fine to coarse grained; some gravel and small cobbles; moist; dense. 8 f 115 8.5 aTotal Depth - 21.0 feet — . No Groundwater INo Caving — Petra Geotechnical, Inc. PLATE B-34 35 ,ORING LOG BUCKET AUGER I Project: Red Hawk. Tract No. 23063 Location: Rancho California Boring Na : 27 Elevation Drill Dote: 10/11/88 Job Ab. ; 298-87 Cogged Dy: CB Driving We%9ht: 1680 lbs. 7 Descr,,o/ori of Moferio/s .y Q S i;, ‘ O� h° 0 I p `� U vC Ou �O �O � 0. o co 0� • °` v I ALLUVIUM Silty Sand: Brown; sand fine to medium SM — grained; dry; loose. I — @ 3.0 ft: Fairly clean - low silt content; damp; medium dense. I - 5 - ` _ 1 117112 9.8 I@ 7.0 ft: Clayey Sand; light red-brown; sand SC fine to coarse grained; some gravel and small — I cobbles; moist; medium dense. @ 8.5 ft: Decreased gravel; no cobbles. I - 10- @ 10.0 ft: Sand; light red-brown; fine to SW coarse grained; some clay; moist; medium 1 . 108 10.3 dense. BEDROCK - PAUBA FORMATION Silty Sandstone: Light red-brown; fine to — I medium grained; some gravel and small cobbles; moist; dense. — - 15- 5 [ 107 20.8 — @ 17.0 ft: Sandstone; light red-brown; fine — — to coarse grained; trace of clay; moist; — dense. - 20- 10 . 107 6.7 — Total Depth - 21.0 feet .— . No Groundwater INo Caving --- I' Petra Geotechnical, Inc. PLATE B-35 ,ORING LOG BUCKET AUGER Red Hawk, Tract No. 23063 Pro/ect� Locotionr Rancho California I Boring No. ; 28 E/evaf/ori Drill Dote: 10/11/88 JobAb. : 298-87 Lo9ged By: CB Driving ki,05t: 1680 lbs. I II I .� Descripfiorl oAu f Moferio/s Q �\^ a Q t h o 0 I 0 d `. t3 C Ohm �.o O . NE `' OO �l0 ALLUVIUM I — Silty Sand: Brown; sand fine to medium SM grained; dry; loose. I @ 2.0 ft: Damp; medium dense. = @ 3.0 ft: Clayey Sand; red-brown; sand fine SC medium grained; damp; dense. I@ 5.0 ft: Silty Sand; light red-brown; sand SM fine to medium grained; some clay; damp; 10 r 118 7.3 dense. I — I BEDROCK - PAUBA FORMATION Silty Sandstone: Light red-brown; fine to _ coarse grained; 10 to 15% gravel; trace of I -10 - _ 10 - clay; moist; dense. @ 10.0 ft: Sandstone; light red-brown; fine 8 r 106 13.9 to coarse grained; some gravel; moist and I dense. I -15 - r9 r 109 7.4 Total Depth - 16.0 feet --- I r No Groundwater No Caving • _ r - - I . I IPetra Geotechnical, Inc. PLATE B-36 . 37 I ,50RING [OG BUCKET AUGER ' Project: Red Hawk, Tract No. 23063 Locotiont Rancho California Boring No. : 29 E/enation Drill Dak: 10/11/88 Jab Ab. : 298-87 Logged By: CB Driving Wellht: 1680 lbs. 6 P').'I µ 0 y� oo I h h l �� Desc�ip/ior7 of Mofe�io/s v 0 k.v o o V h o y: I I td- 4) l5 ':::- •;_. VOu � r, kp v I ALLUVIUM — Sand: Brown; fine to coarse grained; some SW silty fines; dry; loose. @ 2.0 ft: Silty Sand; brown; sand fine to Imedium grained; slightly damp; medium dense. I - 5 - _ 3 III106 4.4 @ 7.0 ft: Moist. I -10 - 1 116 10.4 IBEDROCK - PAUBA FORMATION -15 - Sandstone: Light red-brown; fine to coarse I grained; trace of clay; very moist; dense. 10 117 11.9 @ 16.0 ft: Clean; some fine gravel. IIE I - @ 19.0 ft: Increased gravel; some small cobbles. I -20- 14 f 115 8.4 I Total Depth - 21.0 feet --- No Groundwater INo Caving IPetra Geotechnical, Inc. PLATE B-37 I ,5ORING LOG BUCKET AUGER ' Project: Red Hawk, Tract No. 23063 Location: Rancho California Socrq No. : 30 Elevation: -- Drill Dote : 10/11/88 ' Job No. ; 298-87 Lo99ed By: CB Driv/ng Weight: 1680 lbs. • t4-41 LL $ k5 h QLL H� ti I). 71 .v DescriP//ori *of Moferio/s o Q 0 h Q e V h o :: I ' O s kc, ry l� I ALLUVIUM Silty Sand: Brown; sand fine to medium SM — grained; dry; loose. ' @ 2.0 ft: Slightly damp; medium dense. 1 - 5 - 1 1[7 109 3.0 1 — I -10- @ 10.0 ft: Loose. 11[7 101 4.6 - I - BEDROCK - PAUBA FORMATION Sandstone: Light red-brown; fine to coarse — grained; some gravel; moist; dense. -15- 8 [ 108 11.3 I — — I -20 - — I 5 1r- 109 10.3 Total Depth - 21.0 feet No Groundwater. No Caving — IPLATE B-38' Petra Geotechnical, Inc. 39 IPORING LOG BUCKET AUGER IProject: Red Hawk, Tract No. 23063 2000A450/7/ Rancho California Boring No. : 31 Revel/on: Drill Dote: 10/11/88 Job No. ; 298-87 logged By: CB DrivmB Woe%9ht 1680 lbs. ' elow 25 ft: 750 lbs. ' $ � N� ,a Oescripfion of Renter/a/5 v Q 0 kn o e o\ h� 01 64.V ALLUVIUM I _, Silty Sand: Brown; sand fine to medium grained; dry; loose. SM _ @ 3.0 ft: Slightly damp; medium dense. I 1 L 101 3.0 @ 7.0 ft: Moist. '10- @ 10.0 ft: Loose. 1 r 101 6.4 I @ 15.0 ft: Medium dense. -- 2 L 114 8.2 I@ 17.0 ft: Light brown; becoming dense. I - 20- @ 20.0 ft: Moist. 6 . 118 13.8 I@ 25.0 ft: Damp. — 10 116 8.5 - 30- 14 r 109 11.0 I19 III_ 113 14.2 I - 20- BEDROCK - PAUBA FORMATION Sandstone: Light brown; fine to coarse 18 r 116 3.2 grained; some gravel; damp; dense. ITotal Depth - 42.0 feet No Groundwater No Caving _ I IPetra Geotechnical, Inc. PLATE B-39 40 I GORING LOG BUCKET AUGER ' Project: Red Hawk, Tract No. 23063 Location, Rancho California Boring No. 32 Elevation: - Drill Dote: 10/12/88 Job Na ; 298-87 Logged By: CB Dr/viaBelow/25 1 Wei%/it: 1680 lbs. I elow 25 ft: 750 lbs. • Oescr,,o/on of Moterio/s 0 C i o Q aLi h o 0 QLI I O Jv �ou � o� � Q v SiltyISM ISilty Sand: Light brown; sand fine to medium SM grained; lenses of coarse sand; dry; loose. @ 5.0 ft: Silty Sand; dark brown; sand fine to medium grained; damp; loose and porous. 1 . 106 3.6 I -10- 1 111 6.1 I @ 12.0 ft: Red-brown; occasional gravel; becoming moist; medium dense and porous. I 2 112 8.0 ' -20 - 2 ® 109 11.2 I@ 25.0 ft: Some clay; still porous. 1 - 111 11.6 I@ 29.0 ft: Wet. @ 30.0 ft: Water. -30 BEDROCK - PAUBA FORMATION -------- 9-117 115 14.2 I Silty Sandstone: Red-brown; fine to coarse _ grained; some gravel; very moist; dense. ' @ 35.0 ft: Slightly finer grained. 20 111 120 12.8 - - Total Depth - 36.0 feet Groundwater at 30.0 feet No Caving I Removal of at least 20 feet required. I IPetra Geotechnical, Inc. PLATE B-40 4/ I ,5ORIWG LOG BUCKET AUGER i Project: Red Hawk, Tract No. 23063 Location, Rancho California Boring No. : 33 Elevation, Drill Dole: 10/12/88 Job Ab., 298-87 Logged By: CB Oriviuj h&/ght: 1680 lbs. IBelow 25 ft: 750 lbs. • Descrio/ion of Moterio/s Q k.h o V � 3 l7 J Cm pv �V ALLUVIUM I Sand: Light red-brown; fine to coarse grained; SW — some silt; dry; loose. i_ @ 3.0 ft: Damp and medium dense. . I --- 1 III 102 4.4 0 7.5 ft: Silty Sand; dark brown; sand fine SM- to coarse grained; clayey; very moist; SC — ' -10- medium dense and porous. 1 ilr 110 13.2 T 0 15.0 ft: Increased density; still porous. 1 L 114 13.5 Ii____- 0 18.0 ft: Decreased clay. — I -20 - 1 ® 111 13.9 ' 0 25.0 ft: Sandy Clay; green-brown; some iron CH oxide staining; very moist and stiff. 2 L 119 9.8 I BEDROCK - PAUBA FORMATION — Sandstone: Light brown; fine to coarse / -30- \ grained; 20 to 25% gravel and small cobbles; trace of clay;• moist; dense. ITotal Depth - 29.0 feet No Groundwater '— INo Caving — --- . Petra Geotechnical, Inc. PLATE B-41 • BORING LOG BUCKET AUGER ' Project: Red Hawk, Tract No. 23063 Locotionr Rancho California Boring No. : 34 Elevation: -- Drill Dote: 10/12/88 Job Not ' 298-87 Logged By: CB Driving A&57/7/4: 1680 lbs. . I k u`, ,_ Desc�ip/ion of Maier/a/5 Q L.in ib 0 4 -1,,,c, 4. �Umo° •ij aL � qz) v A I Sand: anta IUM — SLight red-brown; fine to coarse grained; SW some silty fines; dry; loose. @ 4.0 ft: Damp; medium dense. @ 5.0 ft: Silty Sand; dark brown; sand fine to SM — • I coarse grained; trace of clay; very moist; 1 IL119 13.2 loose: I -10- Top r 115 14.7 ' @ 13.0 ft: Decreased clay. @ 15.0 ft: Silty Sand; light red-brown; sand SM 1 r 106 9.5 I fine to medium grained; gravel traces; very moist; medium dense and porous. I - 20- @ 21.0 ft: Seepage. 2 r 113 13.5 BEDROCK - PAUBA FORMATION — Sandstone: Light brown; fine to coarse grained; I20% gravel and cobbles; very moist; dense. — 10 il 117 9.2 I Total Depth - 26.0 feet T Groundwater Seepage at 21.0 feet . - No Caving ,_, — 1 I I PLATE B-42 Petra Geotechnical, Inc. y3 ' ,5ORING LOG BUCKET AUGER I Project: Red Hawk, Tract No. 23063 Location, Rancho California Boring No. : 35 Elevation: Drill Dote: 10/12/88 Job No : 298-87 Logged By: CB Driving lVe%9ht: 1680 lbs. 1 • ' Descrip/ior� of Mgte�io/s Q c a e tl, .h\ \ Ai 3 m o� \ ol a � `0 0' v I ALLUVIUM Silty Sand: Light brown; sand fine to medium SM — grained; damp; loose. I — @ 4.0 ft: Trace of clay; some grave. - 5 - @ 5.0 ft: Thin layer of coarse Clayey Sand; SC damp; dense. 9 [ 108 4.7 __ @ 7.0 ft: Silty Sand; light red-brown; sand SM --- fine fine to medium grained; some clay; some gravel; moist; medium dense. — ' -10 - 1 III 107 6.8 I .— — •' -15 ''�� I BEDROCK - PAUBA FORMATION 121 10.8 Sandstone: Light red-brown; fine to coarse rr grained; 20 to 25% gravel and small cobbles; moist; dense. _ @ 18.0 ft: Increased cobbles - difficult to — drill. 1 - - Total Depth - 19.0 feet • • No Groundwater ' No Caving — ' PLATE B-43 Petra Geotechnical, Inc. #4 I )5ORING LOG BUCKET AUGER Project: Red Hawk, Tract No. 23063 Location: Rancho California IBoring No. : 36 Elevation: -- Dr/I/ Dote; 10/12/88 Job No. , 298-87 Cogged By: CB DrNmg l/%iyht: 1680 lbs. I ; C V. Description of Materia/s Q 0-.a e Q� h a Q r oo" m .\."o . . . o 1 O l5 J C� �' V ALLUVIUM I Silty Sand: Brown; sand fine to medium SM — grained; dry; loose. I@ 3.0 ft: Damp. _ @ 4.0 ft: Moist; trace of clay; medium dense. — I - 5 1 ® 107 7.2 -10- 1 2 [ 109 6.3 I __ I @ 14.5 ft: Sand; light gray-brown; fine to SW --- -15- coarse grained; 20 to 25% gravel and cobbles; trace of clay; moist to very moist; dense. IBEDROCK - PAUBA FORMATION Sandstone: Light red-brown; fine to coarse --- grained; trace of clay; very moist; dense. I - 20- 10 [ 118 9.4 - I . Total Depth - 21.0 feet • No Groundwater No Caving I ' IPetra Geotechnical, Inc. PLATE B-44 'IS IBORING LOG HOLLOW STEM I Project : Redhawk. Rancho' California Location: Tract No. 29064 Boring No. 37 E/evofj0/7 DTIII Date: 3/14/89 Job /b , 298-87 Logged By: CB & TD Driving Weight: 140 lbs. II LL s.1 I u Descrio/ion of Mo 1erio/s 0MO K o z o o I O JU � cpum 4� � `0 I ALLUVIUM SM Silty Sand: Brown; sand fine to medium grained; some fien gravel; I moist; loose. 4 112 8.6 @2.5 ft. : 4 Medium dense and porous 3 I -5 - @5 ft. : 1 Decreased porosity 71[7 112 6.7 I 7 I : @7.5 ft. : 6 Ii 106 5.8 Medium dense with slight porosity 7 8 I -10 - 4 4 117 107 7.4 6 I @12.5 ft. : 6 6 111 7.5 Increased gravel 6 1 -15 - 4 ' 5 [ 114 8.3 7 I BEDROCK - PAUBA FORMATION 11 Silty sandstone: Light reddish-brown; III 13 116 8.5 fine to medium grained; moist; dense 20 -20 - @20 ft. : 18 Fine to coarse gravel 24 1[7121 6.1 I . Total Depth - 21. 5 feet INo Groundwater PLATE B-45 IPetra Geotechnical, Inc. 4/0 IBORING LOG HOLLOW STEM Redhawk, Rancho California Tract No. 23064 Iproject, Locotion: ■ Boring No. : . 38 Elevation: Drill Date: 3/14/89 Job Ab. : 298-87 Lo99ed By: CB & TD ' Driving AWt: 140 lbs. I v Description of Materia/s , Q o e a a •-- � -E v 3Um & � a I ALLUVIUM Silty sand: brown; sand fine to SM medium grained; moist; loose. I 3 . , 111 9.5 ' -5 - 3 j @6.0 ft. : 5 I Medium dense; porous ' 113 9.7 5 ii@9.0 ft: Light brown; decreased porosity 4 1 - 10- 6 . 111 8.3 l' @12.0 ft: ' Trace of clay and fine gravel SM/ 4 110 9.4 SC 6 I 1 - 15 - @15.0 ft. : 5 111 11 .6 I Clayey sand: Light brown; sand fine to SC 5 medium grained; moist ; medium dense. 7 ii I@18.0 ft: 5 Increased sand b , 109 10.2 ' 9Idi _20 - v Cont'd on Plate B-47 I . I PLATE B-46 I Petra Geotechnical, Inc. An IBORING LOG HOLLOW STEM Project : Redhawk, Rancho California Locaf/onfract No. 23064 I80/7nq NO. : 38 Cont'd Elevation: Drill Date: 3/14/89 Job ria , 298-87. Logged ex: CB & TD Driving Wei t: 140 lbs. I DescniPri6/7 0` Materials v Q . 0 z 0\ *o v 3 � m , a I QL 64- o �V I@21.0 ft: SC 8 Trace of fine gravel; dark brown; 10 [ 116 15.1 medium dense 12 — I @24.0 ft. : CL 9 105 21 .9 I -25- Sandy clay: Brown; sand fine 12 grained; moist; dense 19 I Spotted with white carbonceous 16 material; decreased moist; dense 25 121 12.6 11 Total Depth - 28.5 feet - - No Groundwater I 1 I I • I I PLATE B-47 I Petra Geotechnical, Inc. 111 IBORING LOG HOLLOW STEM II project, Redhawk, Rancho California LocOton: Tract No. 23065 Boring No. : 39 [lei/at/o/7: Drill Dote: 3/14/89 Job Ab i 298-87 Logged By : CB & TD Driving Weight 140 lbs. I Descr/p/JoT7 o; Moferio/s Q o e a� o � I 0 � UCr:) Ot- � V I ALLUVIUM Silty sand: Dark brown; sand fine to SM • medium grained; moist; loose. I 1 2 — 112 10.8 2 _ -5 - @5. Oft. : 3 Brown; medium dense; some porosity 5 [ 1• 19 10.2 I 7 4 I 7 IF: 120 10.8 10 I -10 - @10.o ft. : 4 IF Decreased porosity 6 115 10.5 8 I 4 4 Ii 1• 13 10.1 I 9 -15 - @15.0 ft. : 3 I Increased moisture 5 i 112 10.4 6 I 3 4 11: 109 8.4 6 I -20 - 4 5 117 116 8.9 I 7 BEDROCK - PAUBA FORMATION 6 I Sandstone: light brown; fine to coarse 15 1• 11 5.0 grained; moist; dense 15 I Total Depth - 24.0 feet PLATE B-48 No Groundwater Petra Geotechnical, Inc. 49 I BORING LOG HOLLOW STEM Project: Redhawk, Rancho California LOCO/fa/I Tract. No. 23065 ' Boring No. -_ 40 Elevation: Drill Dole: 3/14/89 .lob No 298-87 Lo9ged By : CB & TD Diving Weight: 140 lbs. I ' O • �� h�• �� Description of ti�a feria/s 20 ci f ---....a Q o a ' a .� � � `o O° Flo I ALLUVIUM Silty Sand: Dark brown; sand fine to SM medium grained; moist; loose I 2 2II: 107 10.3 I 3 -5 - I @6.0 ft. : 7 [ 105 5.6 Light brown; damp; medium dense 99105 I III_ @9. 0 ft. : 5 I -10 - Moist; medium dense 5 102 5.8 7 44 107 6.4 5 I -15 - 4 I 6 1: 105 7.0 6 I BEDROCK - PAUBA FORMATION16 Silty Sandstone: Light yellow-brown; fine 22 130 2.6 Ito course grained; damp; dense 21 -20 - I Fine grained; light reddish brown with 2026 107 15.0 some oxide staining; moist- very Aenga 50 Total Depth - 22.5 feet INo Groundwater PLATE B-49 IPetra Geotechnical, Inc. so GORING LOG HOLLOW STEM I Iproject. Redhawk, Rancho California Location: Tract No. 23065 Boring No. : 41 Eieuation Drill Date: 3/14/89 Job At 298-87 Lo99ed By : CB & TD Driving weight: 140 us. 1 IvPeace/pine/7 of Maeci /s • cil 0 I Q o Q3o o Qv l) m v 1 O 7 U � ta o' 4V I ALLUVIUM Silty Sand: Brown to light brown; sand fine; moist; loose I 3 5 [ 116 4.8 7 I -5 - • 6 8 F 107 3.0 I 13 3 I 4 1 112 6.2 7 I - 10- @10. 0 ft. : Clayey Sand: Brown; sand fine to 2 [ 102 11 .6 coarse grained; moist 4.. 5 I 3 4 IL 105 6.5 1 4 -15 - @15. 0 ft. : I Fine to coarse grained 3- [ 103 5.2 5 I 3 16 1110411 13.9 �l -20- 1.- !� ' Cont'd on Plate B-51 — I PLATE B-50 IPetra Geotechnical, Inc. 5/ I BORING LOG HOLLOW STEM I Redhawk, Rancho California project, Locotion: Tract No. 23065 Sorinq No. : 41 Cont'd Elevaf/on: Drill Dote: 3/14/89 Job No : 298-87 Logged By : CB & TD Driving Weight: 140 1hs 1 1 Descrip/ior7 of Materia/s Q -o Q o� o I 4 l7 JV � � p`� � l SC 4 7-, 111 8.9 11 I @22. 5 ft. : Silty Sand: Brown; sand fine grained; 8 F 108 7.8 moist; 12 I -25 BEDROCK - PAUBA FORMATION ----114106 2.5 Sandstone: Light brown; fine to coarse 1 ' grained: damp: Bence Total Depth - 26.5 feet No Groundwater -,-- I _ I I - - - I _ . I PLATE B-51 I Petra Geotechnical, Inc. IBORING LOG HOLLOW STEM P Iroject : Redhawk, Rancho California Location: Tract No. 23065 Boring No. : 42 E/euo/ion: Drill Dole : 3/14/89 Job /bi 298-87 LogWeo' Dy: CB & TB Driving Weight: 140 lbs. I ' Q De5cri2/ior7 of Moterio/s 0 o Q1--,c) -, , • ' 0 '` U C ou t, k 4 J � � o V I ALLUVIUM Silty Sand: Dark brown; sand fine to SM medium grained; moist; loose I 2 2 111 105 6.0 I _5 - @4. 0 ft..: 2 Sand: Light brown; fine to medium grained; SW damp; loose to medium dense. I @6. 0 ft. : 5 Silty Sand: Light brown; sand fine to SM 6III 110 11 .2 medium grained; moist; medium. dense. 7 I 5 7 lir 110 8.1 ' -10 - g I • _7 9 113 6.6 12 I -15 - @15. 0 ft. : 3105 10.0 I Increased moinsture 5 5 I -- 3 5 104 14.4 1 6 -20 1" ICont'd on Plate B-53 I - /e(7s 9757 7 PLATE B-52 IPetra Geotechnical, Inc. 53 ' BORING LOG HOLLOW STEM Project ; Redhawk, Rancho California Location: Tract No. 23065 IBoring Na : 42 Cont'd Elevation: Drill Dote: 3/14/89 Job l\b. : - 298-87 Lo9ged By: CB & TD Driving Wei9ht:14o lbs. I ' p 2m< INS d, Q�te .v DescriPfion of M.ateria,�s . 0 L h o o c 0 0 1 O ° t..`.° � � ' @21. 0 ft. : SM Slightly finer grained 4 5II: 104 11 .9 7 I t F ;in. 0 ft. : 110 8.7 -25 - Fine to medium grained SW 10 @25.0 ft. : 13 Sand: Light brown; fine to coarse ' grained; damp; dense 10 20 115 7.2 ' 38 I -30 - 9 @31.0 ft. : 10 F 112 8.9 Silty sand: Light brown; sand fine to SM 13 ' medium grained; moist; medium dense 8 11: 107 12.1 1 19 5 -' 35 - i @36. 0 ft. : 15 Sand: Light brown; fine to coarse SW grained; damp dense 16 - 112 5.2 I 19 I @39. 0 ft. : 11 -40 - Slightly finer grained 13 [ 106 10.1 1% I Total Depth - 40. 5 feet No Groundwater • I PLATE B-53 IPetra Geotechnical, Inc. -3-c' I BORING LOG HOLLOW STEM IProject Redhawk, Rancho California Locaf/O/1: Tract No. 23065 Boring No. ; 43 Elevation: Drill Dote3/14/89 Job IuD. ; 298-87 Lagged By : CB & TD Driv/ng IS/ei,ht: 140 lbs. I .v Descriof/or/ of Materia/s QCr- .,,, e Q o 1 3 m „ � oeo o Jvy `O � �� � CJ ALLUVIUM SM — I Silty Sand: Brown; sand fine to medium grained; moist; loose I - I -5 - @5. 0 ft. : . 8 Damp; dense 16 113 2.5 22 IF 111 --- — ' -10 - 8 BEDROCK - PAUBA FORMATION Sandstone: Light brown; fine to coarse 13 110 1 .0 grained; damp; dense I I -15 - 9 ' 13 [ 112 2.3 I -20- 9 _ 15 112 0.9 I 22 117— Total Depth - 21.5 feet . No Groundwater PLATE B - 54 IPetra Geotechnical, Inc. SS I BORING LOG HOLLOW STEM IProject Redhawk, Rancho California LOCOtion: Tract No. 23065 8cr/ag No. : 44 E/evof/of7: Drill Dak' 3/14/89 Job /lb. ' 298-87 Lo9ged By: CB & TD PriV/nq Wei0t: _140 lbs._ 1 N I ) Descrio/iofl of Maier/61s v o 0 h o e oL0 0 tZQ • ALLUVIUM I Silty Sand: Brown; sand fine to medium SM grained; moist; loose. I I " 5 - @5.0 ft. : Slightly cleaner; some fine gravel; ' If: 110 8.1 ' medium dense 7 @8.0 ft. : _ Sand: Light brown;fine to coarse grained; damp; medium dense. SW I - 10- @10.5 ft. : 4 Silty Sand: Brown; fine to mediumSM 5 1 . 110 7.4 grained; moist; medium dense. 7 I • - 15- 3 ' 3 107 11 .6 I — — @19. 0ft. _ Sand: Light-brown; fine to coarse grained; ', - 20 • .n. • 0'4 ' O 4 -4 ICont' d on Plate B-56 I — PLATE B-55 I . Petra Geotechnical, Inc. Sfo IBORING LOG HOLLOW STEM Project Redhawk, Rancho California Location: Tract No. 23065 IBoil/i9 NO. : 44 Cont'd Elevation Drill Dote 3/14/89 Job lV : 298-87 Lo99ed By : CB & TD DriVIncl Wei ht: 140 lbs. I IQ Descrio/ior7 of Ma/et/a/5 Q o °e Q\ 0 0 1 ' QL4 I SW 6 108 3.9 6 I I `25- @25.0 ft. : 9 Silty Sand: Light reddish-brown; sand fine to . 10 j 112 7.7 I medium grained; fairly clean; moist; medium 14 — dense 1 I -30 _ BEDROCK PAUBA FORMATION 16 III Silty Sandstone: Light brown; fine to coarse 19 115 6.7 grained; damp; dense 39 ' I -35 - 14 I 26 33 E 111 8.8 I Total Depth - 36.5 feet No Groundwater — I — I PLATE B-56 IPetra Geotechnical, Inc. 5? IBORING LOG HOLLOW STEM Redhawk, Rancho California project : Locution: Tract No. 23065 I Bo/ing No. : 45 E/evot/on Drill Date : 3/14/89 Job No = 298-87 Loqqed By : CB & TD Drivinq l✓ei iht: 140 lbs. I Q DescriPfion of Moier/o/sp 0 m a I ALLUVIUM Silty Sand: Brown; sand fine grained; damp; loose • I - 5 - @5.0 ft. : 2 Moist; medium dense 3 11796 5.4 5 IIII -10 - @10. 0 ft. : 8 Dense 19 I_ 122 11 .7 25 1 1 IBEDROCK - PAUBA -FORMATION -15 - Sandstone: Light brown; fine to coarse 26 I F grained; damp; dense r25 34 115 8.0 I Total Depth - 16. 5 feet No Groundwater ..` I ___- • I PLATE B-57 I Petra Geotechnical, Inc. 58' IBORING LOG HOLLOW STEM Project, Redhawk, Rancho California LOcofion: Tract No. 23065 IPoring No. : 46 Elevation: Drill Date 3/14/89 Job Iib. : 298-87 Logged By : CB & TD Driving freight:140 lbs. I Q �� o I ODesriptin oMa%erio/s h � W QamO> u 0 Q a t 7 JU � � u O� � l� ALLUVIUM I Sand: Light gray and brown;: fine to SW medium grained; intermediate layers of fine & silty sand; moist; loose SM 5 I 5 7 108 4.2 i - 5 - 2 @6.0 ft. : -i2 108 13.8 I Silty Sand: Dark brown; sand fine grained; SM 3 — very moist; medium dense 1 BEDROCK - PAUBA FORMATION I -10 - Clayey Sandstone: Reddish-brown; fine to 15 coarse grained; moist; very dense 23 119 9.0 29 I @15.0 ft. : __- -15 - Silty Sandstone with Gravel: Reddish-brown; find 16 116 8.3 I to coarse grained; slightly clayey; moist; 31 1 very dense. 31 Total Depth - 16. 5 feet INo Groundwater _ _ I - 1 PLATE 8-58 IPetra Geotechnical, Inc. .5'9 IBORING LOG HOLLOW STEM Project : Redhawk, Rancho California LOCOf10r1: Tract No. 23065 IBoring No. : 47 Elevation: Drill Dote. 3/14/89 Job No , 298-87 Lo9ged By : CB & TD Div/ng Weight: 140 lbs. I Q De5cripfion of Materials • , Q 0 h a Q a� h o 3.. 1 v � m �, � a 1 ii � � ALLUVIUM — I Sand: Light brown; fine to coarse SW/ grained; silty; damp; medium dense. SM 5 I 7PI 10 103 2.2 i 5 3 Ti FN0 Reoovery I 6 I I - 10- @10.0 ft. : 9 116 7.3 Moist and dense 15 I I - 15- 5 4li: 103 3.3 I 10 I _ I -20- 7 12 [ 111 3.0 I 16 Total Depth 21.5 feet No Groundwater I PLATE B-59 IPetra Geotechnical, Inc. . 40 IBORING LOG HOLiow STEM I Project; Redhawk, Rancho California Locot%ong Tract No. 23065 Boring No. : 48 E/evafion: Drill Date: 3/14/89 Job No : 298-87 Logged By : CB & TD Driv/nq We9ht: 140. lbs. Descr/ //0/7 of M,aver/a/s 'n Q a Q� -+--,c3 P 3 m .� O Q o JU atQ �� aclI p ALLUVIUM Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose I 4 111: 95 14.6 I '"5 - @5.0 ft. : 3iii_ Sand: Light brown; fine to medium grained; 5 104 2.1 I intermediate layers of fine Silty Sand; - 6 damp; medium dense. I "10 - 5 5 117 101 4.6 @11.0 ft. : 6 I _ Silty Sand: Light brown; sand fine — grained; damp; medium dense 15 5 I 6 1[7 102 8.2 7 I Total Depth - 16.5 feet No Groundwater — 1 - I . I 1>eg 973 I PLATE B-60 Petra Geotechnical, Inc. 0 I BORING LOG HOLLOW STEM Project:_ Redhawk, Rancho California _ Location: Tract No. 23064 & 23065 IPormg NO. : 49 ELevo//on: Drill Dole : 3/14/89 Job hb. : 298-87 Logged By: CB & TD Driving Weight 140 lbs. I v Descr,0//o/7 of Moferio/s Q 0 o Q o i v � m � a a ,t,-(:,,,, to AilUyIUM I _ Silty Sand: Dark brown; sand fine to medium SC grained; moist; loose 11• 09 7.4 I -5 - @5.0 ft. : Silty Sand: Brown; sand fine to coarse SM Igrained; moist; medium dense. — 1• 13 3.6 I __ - 10 - 1[7 10 [ 1• 13 6.3 I I _ 15 _ BEDROCK - PAUBA FORMATION Sandstone: Light brown; fine to coarse 1• 13 7.2 Igrained; damp; dense. I Total Depth - 16.5 feet No Groundwater I — . I PLATE B-61 IPetra Geotechnical, Inc. 4,z ' BORING LOG HOLLOW STEM Project . Redhawk, Rancho California Locotioni.Tract No. 23065 IIBoring No. : 50 Elevation: Drill Dote: 3/14189 Job Na ; 298-87 Logged By - CB & TD Driving Weight: 140 1hs I clsk o 1� N� .1) � Iv Descrio/iori o f Mater/cds Qo 0 0 o e Q o Q SL� O l7 J (t `Q V ALLUVIUM II Sand: Light brown; fine to medium grained; SW — intermediate layers of brown; fine silty 6 sand; damp; loose. SM 4 I 5 1113 7 3.9 I -5 - 3 4117 104 9.5 I 4 I — I -10 - @10.0 ft. : Sand; Light brown; fine to coarse 5 6 1E 110 1 .4 grained; damp; medium dense 6 I — I@14.0 ft. : -15 - Silty Sand: Brown; sand fien grained; 4 moist; medium dense. 5 1[7101 10.0 8 ' Total Depth- 16.5 feet — No Groundwater 1 — 1 — PLATE B-62 IPetra Geotechnical, Inc. 123 IBORING LOG HOLLOW STEM Project: Redhawk, Rancho California LOCotion: Tract. No. 23066 IBoring No. : 51 Elevation: Drill Dote: 3/15/89 Jobla ; 298-87 LO99ed By : CB & TD Driving Wei95f: 140 lbs. I v Descrip1ior7 of Materia/s vQ h Q �� Q 3o mO� a- v � a ALLUVIUM I Silty Sand: Brown; sand fine to medium grained; SM moist; loose I 2 2 II: 111 12.7 2 -I - 5 - __ _ @6.0 ft. : I • Very moist; medium dense 3li: SPT 3 I@9.0 ft. : 5 Some gravel; trace of clay I _ 10_ 9IF 118 13.2 9 I @12.0 ft. : Clayey Sand: Brown; sand fine to medium SC 5 SPT grained; very-moist; medium dense 6 _ 15 BEDROCK - PAUBA FORMATION 15 117 Silty Sandstone: Light brown; fine to coarse I grained; trace of clay; same gravel; moist; 23 121 8.9 dense. 32 I 13 24 Ill SPT 25 Total Depth - 19.5 feet No Groundwater ICODE: SPT - Standard Penetraction Test . I PLATE B-63 IPetra Geotechnical, Inc. (Pc' IBORING LOG HOLLOW STEM Project: Redhawk, Rancho California Location: Tract No. 23066 & 23067 IIBoring Na : 52 Elevation: Drill Oak: 3115189 ,lob /W- : 298-87 Logged By: CB & TD Driving Weight 140 lbs. I C . a ThA & ()L t v DescriPfion of M,aterio/s 0 Cr-,,,. Q a 0 0 1 3 m � a I o ALLUVIUM II Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose I@3.0 ft. : 5 105 3.9 Damp; medium dense and porous 8 I - 5 - — - - 10 I 7 8li: SPT 8 I@9.0 ft. : III Clayey Sand: Dark brown; sand fine to SC 6 120 11 .5 I - 10- medium grained; moist; dense. 9 I @12.0 ft. : 3 Decreased clay 3 SPT 4 I 15- 5@15.5 ft. : 14 1113 10.0 I Thin layer of gravel7 @16.0 ft. : Silty Sand: light brown; sand fine to SM I coarse grained; some gravel; moist; medium dense. 3 4II: SPT u 3 I - 20 • Cont'd on Plate B-65 I . I PLATE B-64 IPetra Geotechnical, Inc. '5 IBORING LOG HOLLOW STEM Project : Redhawk, Rancho California LOCOf/or7:Tract No. 23066 b 21067 IBoring Na : 52 Cont'd E/evafion: Drill Date: 3/15/89 I Job Na ; 298-87 Logged By : CB & TD Driving Weight: 140 lbs. .v Descry/2/70n of Materia/s ---,,ti, e a� 0 -- i - -- ti) m � a 1 qL O V C u �O @21.0 ft. : I Increased sand; trace of clay; moist; SM dense 5 Ill 109 7.8 9 14 I @24.0 ft. : 7 Clayey Sand: Reddish-brown; sand very fine to SC 10II: SPT I -25 - fine grained; moist; dense 15 I @27.0 ft. : 12 Clayey Silt with Sand: Reddish-brown; sand very ML 20 103 22.8 ' fine grained: moist-• tariff 34 — Total Depth - 28.5 feet • - No Groundwater CODE: SPT = Standard Penetration Test 1 1 — I PLATE B-65 IPetra Geotechnical, Inc. WI, IBOR/NG LOG HOLLOW STEM Project : Redhawk, .Rancho California Location: Tract No. 23067 I Boring No. : 53 Elevation: Drill Dole: 3115189 Job Ak°. ' 298-87 Lo9ged By : CB & TD Driv/nq Weight:140 1 h s. i CT I Ll I Descripriorl of Marerio/s ej Q e oamQ\ IQ 1. oV C . � t,O I QL 117v1' D lC V `� ' l.1 ALLUVIUM I SM Silty Sand: Dark brown; sand fine to medium grained; moist; loose; lenses of fine to & coarse sand. - SW I @3.0 ft. : Sand: Light brown; fine to coarse grained; SW- 3 slightly silty; moist; loose to medium SM 2 105 7.3 I dense 2 mil - 5 II @6. 0 ft. : 4 I Silty Sand: Light brown; sand fine to 4 SPT medium grained; fairly clean - low silt SM 5 content; damp; medium dense. ii I @9.0 ft. : Clayey Sand: Brown; sand fine to coarse 6 ' 113 10.3 SC I -10 - grained; moist; medium dense. 6 I I@12.0 ft. : • SIlty Sand: Light reddish-brown; sand fine SM 3 ' SPT to medium grained; moist; medium dense. 4 ii -15 - @15. 0 ft. : 5 IAs above; increased moisture 6 11 104 11 .4 7 II I@18.0 ft. : SM 3 As above: Linses of fine to medium sand. & 4 ;; , SPT SW 6 I -20 —//. ICont'd on Plate B-67 I PLATE B-66 IPetra Geotechnical, Inc. 407 IBORING LOG HOLLOW STEM project ; Redhawk, Rancho CaliforniaII Location: Tract No. 23067 &r/ng No. 53 Cont d ElevationDrill Dote: 31151m) Job Ab. ; 298-87 Lo99ed By: CB & TD Driving Wel9hh 140 lbs. I • Q Descri)o//a7 of Ma 1ec/o/s Q o e 0 --1,,,:) 0 � v Sum h p e 00 @20. 0 ft. : ISand: Light brown; fine to medium grained; SW 7 clean; moist; medium dense. 11 II: 103 6.2 13 I . @24.0 ft. : 6 As above: Slightly coarser grained 6 1 SPT -25 - @27. 0 ft. : 12 Sand with some Gravel: Light brown and very 17 114 15.6 I light reddish-brown; fine to coarse grained; moist; dense. SW 30 -30 - @30. 0 ft. : 9 Clayey Sand: Reddish-brown; sand very fine SC 14 SPT grained; moist; dense 19 ITotal Depth - 31. 5 feet No Groundwater ICODE: SPT = Standard Penetration Test - - I I _ -- I I ~ _ PLATE B-67 IPetra Geotechnical, Inc. IBOR/NG LOG HOLLOW STEM IProject , Redhawk, Rancho California Location: Tract No. 23067 Boring No. : 54 Peva/ion: Drill Dale : 3/15/89 Job Na : 298-87 Lo99ed By : CB & TD Driving Weight: 140 lbs. II Iv Descrip/ion of Molerio/s ma Q fl-,a Q o 1 p J4 V 1 ALLUVIUM — Silty Sand: Dark brown; sand fine to SM medium grained; moist; loose I2 99 8.9 @4. 0 ft. : 2 1 Reddish-brown; loose � 5 - I 2 2 3 SPT 1 — @9. 0 ft. : Clayey Sand with Gravel; Reddish-brown; sand SC 13 114 14.0 I - 10_ fine to coarse grained; very moist; 20 dense. 13 @11. 0 ft. : Silty Sand: Light brown sand fine to medium SM I grained; some clay; fairly clean; moist; 8 SPT medium dense. 10 13 I - 15- BEDROCK - PAUBA FORMATION 15 Sandstone: Light brown and light reddish-brown; I fine to coarse grained; trace of clay; very 25 121 7.8 eist, d`.. 39 • 1 Total Depth - 16. 5 feet No Groundwater 1 _ _ CODE: SPT = Standard Penetration Test I - 1i�3 ��" 9 g. PLATE B-68 IPetra Geotechnical, Inc. 49 I BORING LOG HOLLOW STEM Project: Redhawk, Rancho California Location: Tract No. 23067 IBoring No. : 55 E/evotion; Drill Dak : 3/15/89 Job /b. : 298-87 Logged By : CB & TD Driving We%ght:140 lbs. I v Descriorior/ ofMpTerip/s N Q v 3 o m o. "o Q IO UR � O� � l.) ALLUVIUM I Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose I@3. 0 ft. : 3 Fairly clean; medium dense and porous 2 111.105 4.5 I3 ` 5 _ I • 2 SPT 1-- 3 @9. 0 ft. : 7 - 10- Some clayey fines; very moist. SM/ 8 115 11 .7 SC I @12. 0 ft. : 2 Light reddish-brown; slightly finer grained 2 1 SPT 3 I _ 15_ BEDROCK - PAUBA FORMATION 15 SiltySandsto e: Light reddish-brown' fine to II: 120 11 .3 medium grained; Slightly clayey; moist; dense 27 45 I Total Depth - 16.5 feet No Groundwater CODE: SPT = Standard Penetration Test I I . I PLATE B-69 IPetra Geotechnical, Inc. 7D I BORING LOG HOLLOW STEM I Pro%ecf : Redhawk, Rancho California �OCOf%O!!: Tract No. 23067 Boring No. : 56 Elevation.' Drill Date: 3/15/89 Job I'b = 298-87 Lo99ed By : CB & TD Priwoq 1415717t: 140 lbs. I .v Descrio/iori of /MQ ler/OSS Q �l o Opp\ 0 Q 4 Ohm N N � 4 1;1', U rnC. Ol� � V ALLUVIUM ISilty Sand: Dark brown; sand fine to medium SM grained; moist; loose 1 @3. 0 ft. : 5 103 3.7 Reddish-brown; some clay fines; damp; SM/ 8 ' very porous SC 9 — 'S ' -CI I/I SPT 8 7 ' I--- @9.0 ft. : Increased moisture; less porosity; medium 5 110 9.4 ' -10 - dense 5 I @12.0 ft. : 2 Slightly coarser grained 3 Ill SPT 3 1 -15 - @15. 0 ft. : I Sand: light reddish-brown; fine to coarse SW 181[1 120 4.8 grained; some gravel; moist; dense. 23 I@18. 0 ft. : 12 III Silty Sand with clay: Light reddish-brown; sand SM/ SPT fine to medium grained; some gravel; moist; dense SC ?� I -20- Total Depth - 19. 5 feet No Groundwater I . CODE: SPT = Standard Penetration Test I PLATE B-70 IPetra Geotechnical, Inc. 7/ IBORING LOG HOLLOW STEM Redhawk, Rancho California I Project COCOf%O/I: Tract No. 23067 Boring No. 57 E/euafion Drill Dote: RliciR9 Job No. : 298-87 Lo9ged By : CR & TD Driving Weight: 140 lbs. I C N 4 Descriofiori of Materia/s v Q h o e c . 0 0 I 3 ic , cu co ALLUVIUM — Silty Sand: Brown; sand fine to medium SM grained; moist; loose I@3.0 ft. : 4 Medium dense and porous —46 SPT I _5 _ - - -- - _ _ @6. 0 ft. : 5 Decreased porosity; medium dense 8 F 107 7.5 9 IBEDROCK - PAUBA FORMATION 16 Sandstone: Light reddish-brown; fine to coarse , 20 Ill SPT I _10 _ grained; damp; dense 23 I 20 � 23 105 4.3 25 ITotal Depth - 13. 5 feet '15 ' No Groundwater r. CODE: SPT = Standard Penetration Test I —_ I _ _ I .— PLATE B-71 IPetra Geotechnical, Inc. 71 IBORING LOG HOLLOW STEM ' Project: Redhawk, Rancho California LOCation Tract No. 23067 8011/79 NO. : 58 Elevation: Drill Dote: 3/15/89 Job No. : 298=87 to9ged $,y: CB & TD Driving Weight:140 lbs. 1 Descria/ion ofMateria/s Q 0---..,k. Q c 0 0 I ' i'')'- a) JUR � um O° Flo ALLUVIUM Silty Sand: Dark brown; sand fine to medium SM _ grained; moist; loose. I 2 3 2 III 106 6.1 -5 - - I Li. ft. : 2 Light borwn; medium dense SPT 3 _ 3 I 4 4 110 7.5 I -10 - @10.0 ft. : q As above I 2 @12.5 ft. : 311: SPT As above 2 -- -15 ` ' A5 ft. : 5 Assabove 511110 7.6 6 I@18. 0 ft. : 5 Silty Sand: Dark brown; fine to coarse grained; 7 F SPT moist; medium dense 9 ICont'd on Plate B-73 t PLATE B-72 IPetra Geotechnical, Inc. 'S I BORING LOG HOLLOW STEM IProject. Redhawk, Rancho California Location: Tract No. 23067 80r/hey No. : 58 Cont'd Elevation: Drill Dole : 3/15/89 Job No : 298-87 Logged By : CB & TD Driving Weight: 140 lbs. I 1Ma`erio/s � "^ �-.--..k, � �? o I . Descrio ior7 ofeo Q m o 43 m Q o a @21.0 ft. : SM IDense 10 27 120 12.1 54 BEDROCK - PAUBA FORMATION — Silty Sanstone: Light brown; fine to medium ,. grained; damp; dense 15 I _ 30 SPT -25 - 50 ITotal Depth - 25. 5 feet _ No Groundwater ICODE: SPT = Standard Penetration Test I I I - . I PLATE B-73 IPetra Geotechnical, Inc. 74f IBORING LOG HOLLOW STEM Project, Redhawk, Rancho California Locaf,4, Tract No. 23067 IBoring No. : 59 Peva/furl Drill Dole : 3/15/89 Job 1b. :— 298-87 Logged By: CB & TD Driving ASOV: 140 lbs. I N a $ , �� cr)� � . Descr,,0/orl of Mo terio/s Q m 3 U o� `0 0 k. I4.) 0 lb � U � � O� � � ALLUVIUM I Silty Sand: Dark brown; sand fien to medium SM grained; moist; loose I 2 @4. 0 ft. : 1.1II: 106 6.6 I ^5 - Brown; moist; loose 2 2 2 I 3 IllSPT I@9. 0 ft. : 5 -10 - Medium dense and porous 7 113 8.9 III I 6 I3 2 SPT 2 I -15 - @15.0 ft. : 5 I Trace of clay fines; medium dense and porous SM/ 4 lh 110 10.0 SC 4 I 2 3 III SPT �/ 3 ICont'd on Plate B-75 I PLATE B-74 IPetra Geotechnical, Inc. 'S I BOR/NG LOG HOLLOW STEM Project Boring No.: Redhawk, Rancho California 59 cont Locat on Tract No: 23067 d E/evafior7 Drill Pak: 3715189 Job Ala ; 298-87 [ogged By: CB & TD Driving Weight:140 lbs. 1 • 4: 00 v of M,oterio/s " l�P � C. l I )Qc L 11) z() Q., t,-ELS0 mV I 3 W III 108 10.1 4 @24.o ft. : 3 Sand: Light reddish-brown; fine to medium SW 4 II: SPT I -25 - grained; moist; medium dense. 4 I • @27. 0 ft. : 6 Sand with Silt: Light reddish-brown; fine SW/ 6 104 8.3 I to medium grained; moist; medium dense. SM 7 — I -30 - @30.0 ft. : 3 Silty sand with some clay: Reddish-brown; sand / 3IF SPT fine to medium grained; moist; medium dense. SC 4 I@33.0 ft. : 3 Sand: Light reddish-brown; fine to coarse I grained; moist; medium dense.' SW 5 1[1111 8.2 8 -35 - — • I@36. 0 ft. : 4 Sand with Some Silt: Light reddish-brown; fine. SW/ 6 II: SPT to medium grained; moist; medium dense. SM I 19 F102 12.3 -40 - 10 13 I Total Depth - 40.5 feet No Groundwater — ICODE: SPT = Standard Penetration Test • PLATE B-75 IPetra Geotechnical, Inc. 76 BORING LOG HOLLOW STEM Project : Redhawk, Rancho California Location: Tract No. 23067 IBoring No. : 60 Elevation: Drill Dote : 3/16189 Job /09. ; 298-87 Lo9ged By: CB & TD Driv/ng Weight 140 lbs. I Desc/iprion of Materia/s v Q . 0 e Q� n o Q i 0 0 v � � u@ 0° `� Flo ALLUVIUM ISand with sone Silt: Light brown; fine to SP/ medium grained; damp; loose SM I 4 5 100 1 .9 II6 - 5- — I A6.0 ft. : 3 As above with inermediate layers of fine SP 3 IF SPT silty sand; damp; loose & 3 SM @9.0 ft. : 8 I -10 - Sand: Light gray; fine to coarse grained; SW 10 102 3.7 clean; damp; medium dense 11 It @12.5 ft. : Groundwater 3 ` Silt with Sand: Light gray; micaceous; wet; ML 4 SPT I soft. @14. 5 ft. : -15 - Sand: Light gray; fine to coarse grained; SW 9 clean; wet; dense. 13 I III 19 116 15.2 I Total Depth - 16.5 feet Groundwater at 12.5 feet ' - - CODE: SPT = Standard Penetration Test — 1 . ' �,e; 2 73 / PLATE B-76 1 Petra Geotechnical, Inc. 71 1 BORING LOG IProsect. Redhawk, Rancho California Locot/On: Tract NO. 23067 Boring No. : 61 Eleua//on: Drill Dote : 3/16/89 Job No z9s s7 Loggeci By , CB & TD Priv/n9 Weight: 140 lbs. I LI& C0\-)1`LL ` ‘ \ 4 Pescriorio/7 of Maier/cis Q 3 0 O\ * N 0 ISL ' SLOPE WASH Silty Sand with some Clay: Reddish-brown; sand fine to medium grained; moist; loose I@3.0 ft. : 6 111 4.2 Medium dense: slightly porous 7lir 1 ^5 -- - 6 -- @6.0 ft. : 1 Dense 8 11 p SPT 10 - I 14 16 I115 7.3 -10 - — 28 Total Depth - 10.5 feet No Groundwater CODE: SPT = Standard Penetration Test _ I _ 1 PLATE B-77 1 Petra Geotechnical, Inc. 77 IBORING LOG HOLLOW STEM I Project . Redhawk, Rancho California location Tract No. 23067 Boring No. 62 Lk vation Drill Dote : 3/16189 JobAb. ; 298-87 Lo99eci By CB & TD Driving Weight: 140 lbs. 1 V Descr%of%oru of M,a`erio;sQ a Q o o 1-- -Z.. -, I - - t:- ... CU Nom , >,� O (:), ' O lJ R O `.) SLOPE WASH I Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose I @2.5 ft. : Clayey sand: Dark brown; sand fine to medium SC 6 grained; dry; very porous g 94 3.4 II -5 11 - @5.5 ft. : Clayey Silt: Light gray brown; some fine sand; ML dry; hard 12 II: 23 SPT 27 ,__ @8.5 ft. : Clayey Sand: Light brown; sand fine to coarse SC 14 III grained; moist; dense I 15 — 118 6.0 -10 ' 15 Total Depth - 10.5 feet ' No Groundwater — ' COSE: SPT = Standard Penetration Test I — - - I PLATE B-78 IPetra Geotechnical, Inc. 79 IBORING LOG HOLLOW STEM P/oieCf; Redhawk, Rancho California Location: Tract No: 23067 IBoring No. : 63 £levafion: Drill Dole: 3it6iSe Job No ' 298-87 Lo9ged By : CB & TD Driving Weight: 140 lhs 1 CT � N� i °O °N .v Descri /ion of N'aferio/s 0 p--,,,k, o\ 0 0 I P3 m �� � Q ALLUVIUM I Silty sand: Reddish-brown; sand fine grained; moist; loose I @3.0 ft. : 18 Clayey Sand: Brown; sand fine to medium grained; dry; very porous; less porosity 26 111 3.8 ` at 4.0 ft. 29 _5 _ @6.0 ft. : 12 IAs above: Dry; dense with slight porosity 24 SPT 23 @9.0 ft. : 14As above; damp; slight porosity I -10 - 16 r113 3.1 13 11 @12.0 ft. : 3 As above; moist; medium dense with slight 3 III SPT porosity 5 I -15 - @15.0 ft. : 7 Increased moisture 11 15 1[7112 8.8 II@18.0 ft. : 4 Silty Sand with Clay: Reddish-brown; sand fine 5 SPT to medium grained; very moist; dense 7 -20 Total Depth - 19.5 feet No Groundwater ICODE: SPT = Standard Penetration Test . I PLATE B-79 IPetra Geotechnical, Inc. I BORING LOG HOLLOW STEM IProject , Redhawk. Rancho California LOCO/la/7fTract No. 23067 Boring No. : 64 E/evofionv Drill Dote : 3/16/89 JobNo. ; 298-89 Lo99ed By: CR F. Ti) Dr/wag Weight: 140 lbs. 1 4 v Descriprior� of Mo/erio;s v 0 h oo Q7:1 Q� 0 0 ALLUVIUM ISilty Sand: Dark brown; sand fine to medium SM grained; trace of clay fines; moist to very moist; loose @3. 0 ft. : 3 Medium dense and porous 2 1112 12.2 I �5 _ - 3 @6.0 ft. : 2 I Reddish-brown; very moist and medium dense; 2 F SPT decreased porosity 3 1 @9.0 ft. : 5 Slightly cleaner; medium dense 6 1 $ 108 7. 1 '10 ' @12.0 ft. : I As above -4- lir PT 5 I `15 - @15.0 ft. : As above $ 7 r ,11 7.5 @16. 5 ft. : 9 _____ Thin layer of fine to coarse sand. SW @18.0 ft. : Silty Sand: Reddish-brown; sand fine to medium SM 5 SPT grained; some fine gravel; moist; medium dense I `20 I . Cont'd on Plate B-81 PLATE B-80 IPetra Geotechnical, Inc. 9' IBORING LOG HOLLOW STEM Project ; Redhawk, Rancho California Location. Tract No. 23067 IBoring No. : 64 Cont'd E/evo/ion: Drill Dofe: 3/16/89 Job Ala : 298-87 Logged By: CB & TD Driving Weiihf: 140 lbs I c DescriMiori of Ma 1eria/s Q o cc, 0 c\ -i---„?‘ 0 I - I @24. 0 ft. : 7 Moist and dense SM 11 13 1113 5.2 I III- PAUBA FORMATION Silty Sandstone: Light reddish-brown; fine to 13 ' SPT I '25 - coarse grained; some gravel; trace of clay; 17 moist- dances I Total Depth - 25.5 feet No Groundwater ICODE: SPT = Standard Penetration Test I - • IIII I I 1 II I — • I PLATE B-81 IPetra Geotechnical, Inc. sa IBORING LOG HOLLOW STEM ProsectRedhawk Rancho California Tract No. 23067 Location: IBoring No. : 65. Elevation: Dill Bede : 3/16/89 job No : 298-87 Lo99ed By ; CB & TD Pr!v/nq Weight: 140 lbs. I v Descriofion of Mn`erio/s Q ^ a Q o a 0 c. i D O °< Li I ALLUVIUM SM Silty Sand: Dark brown; sand fine to medium grained; moist; loose 1 ` 2 Z II: 105 4.3 4 I - 5 - — @6.0 ft. : 3 11: SPT Light brown; moist; medium dense 3 5 I !_ 3 10- 4II: 108 7.7 I 5 I 3 2 IF: SPT I--- 3 I - 15- 1 - III1/7: 112 8.7 6 1 4 5IF: SPT I20 -/j - ICont'd on Plate B-83 /� I PLATE B-82 IPetra Geotechnical, Inc. 83 IBORING LOG HOLLOW STEM Project, Redhawk, Rancho California Location: Tract No. 23067 IBoring No. : 65 Cont'd Elevation: Drill Dote : 3/16/89 Job Ab. : 298-87 Lo99ed By . GB & TD Driving Weight: 140 lbs. I t - v Desc�iPrio� of Motecio/s o .o m a' 0 0 I � a Ir@21.o ft. : Groundwater BEDROCK - PAUBA FORMATION 9 Clayey Sandstone: Yellow-brown; fine to medium 11 111. 11 .9 grained; moist; dense 13 8 12IllSPT 14 I to 25 111 120 14.6 I 41 --- Total Total Depth - 28.5 feet Groundwater 21. 0 feet —..— COSE: SPT = Standard Penetration Test I I 1 I I I . I PLATE B-83 IPetra Geotechnical, Inc. VI I BOR/NG LOG Hollow Stem Redhawk, Rancho California Project: LOCO*0/7 t Tract No. 23067 Lao//ng No. : 66 Elevofion: Drill Dole: 3/16/89 Job No : 298=87 Logged By: CB & TD Driving ll/ej ihf: 140 lbs. I "c V Q 1' % �° Io Desc�ipfion of M,ote�ia/s mu Q 0 tn k Q o L) v Q ' m vi O N , o Ua `° o� �` � l' ALLUVIUM I Silty Sand: Brown; sand fine to medium; SM grained; moist; loose. I @3.0 ft. : Loose to medium dense and porous; damp 4 6 [ 98 4.4 $ •I - 5 - - - @6.0 ft. : 6 I Light brown; moist; decreased porousity 7 SPT 8 I5 7 107 8. 1 I - 10- 6 lir I 5 8 SPT 10 I - 15- @15.0 ft. : 4 I Light reddish-brown; fairly claen; moist; 6 103 6.5 medium dense. 5. 44 Ir SPT 6 - 20 �/ ICont'd on Plate B-85 �/ I ilr PLATE B-84 IPetra Geotechnical, Inc. 85 IBORING LOG HOLLOW STEM I Project : Redhawk, Rancho California Location: Tract No: 23067 Bor/nq No. 66 Cont'd Eievafjon Drill Dote : 3/16/89 Jobb ; 298-87 Lo99ed By : CB & TD Driv/ng Weight: 140 lbs ° I i MALk a 1)' o Descrip ion of Materias 0---,4, c QI dam � 0 I @21.0 ft. : Some fine gravel 5 7 li 105 10.6 8 - • 3 - 25- 5 _ - 5 SPT I @27.0 ft. : 7 Sand: Light reddish-brown; fine to medium 10 1_ 108 5.7 grained; some fine grained; slightly silty; 12 moist; dense — I -30- 4 5 I- SPT 7 I 10 Ir 109 7.3 10 -35 - — I S 6 U SPT I S ' @39.0 ft. : 8 -40- Fine to coarse grained; moist; dense 10 112 7.8 10 I Total Depth - 40.5 feet — No Groundwater CODE: SPT = Standard Penetration Test I PLATE B-85 IPetra Geotechnical, Inc. 8(v ' BORING LOG HOLLOW STEM ' Project : Redhawk, Rancho California Loco io/1: Tract No. 23067 BO/i79 Na : 67 Elevation! Drill Date : 3/16/89 Job A6 .: 298-87 Lo9ged By : CB & TD Driving Weight: 140 lbs. p � � Q � N� Q Descrio/ior7 of Ngo 1e/io/s Q 0---„,k, Q Q o Q I . IiU � � Um 4� � l� ALLUVIUM ' Silty Sand: Brown; sand fine to medium grained; moist; loose I@3.0 ft. : • 4 Medium dense and porous 6 [ 101 4.3 ' - 5 - 8 @6.0 ft. : ' Decreased porosity; medium dense 6 7 SPT 9 1 @9.0 ft. : Clayey Sand: Brown; sand fine to coarse 6 II: 110 9.4 ' y y grained; SC 6 - 10- moist; medium dense: 6 II 3 3 IF SPT 3 1--- - 15- @15.0 ft. : 8 I Sand: White to very light reddish-brown; fine No Recovery to coarse grained; moist; dense. sw 14 I @18.0 ft. : Gravelly Sand: Light reddish-brown; fine to Z� ,_ SPT coarse grained; moist; dense. 22 - 20----7.-• .A -- ICont'd on Plate B-87 !� I PLATE B-86 IPetra Geotechnical, Inc. g/ 1 BORING LOG HOLLOW STEM ' Project: Redhawk, Rancho California location Tract No. 23067 ring No : 67 Cont'd F/eva//c Drill Date: 3/16/89 Job /`lo ; 298087 Logged by ; CB & TD Driving WejC t: 140 lbs. 1 2t .t-4k �\ .v Descr%a//on of Materia/s su Q 0 o Q o aQ3 E o � v � � u � o� � � II50/ No Recovery SW 5" — ' BEDROCK - PAUBA FORMATION 11 Clayey Sandstone: Reddish-brown; very fine to 20 F SPT - 25- medium grained; moist; dense 23 I 9 1 30 L 118 16.0 II 30 Total Depth - 28.5 feet — No Groundwater - 30- ....- CODE: SPT = Standard Penetration Test 1 _ 1 - PLATE B-87 IPetra Geotechnical, Inc. $ IBORING LOG HOLLOW STEM 1 Project; Redhawk, Rancho California LOCOf%On Tract No. 23065 Boring No. 68 Elevation Drill Dote : 3120189 Job ; 298-87 Logged By: CB & TD Drivinq Weight 140 lbs. 1 Q Descrip/iorl of iWo terio/s 0 0 o Q C� * ° 0 i O � i. U � `' p` � `.) I ALLUVIUM Silty Sand: Dark brown; sand fine grained; SM damp; loose. , I 2 102 3. 7 1 - 5 - -- 1 2SPT J. 2 1 @9.0 ft. : 91 2.4 Sand: Light brown and gray; fine to coarse j II: 1 - 10- grained; damp; medium dense to dense. SW 1 4 F5n 5 I 6 - 15 - @15.0 ft. : 10 1 Slightly coarser grained; light reddish- g 108 3.1 brown; dense. I 4 7 III SPT ,/ 10 1 -20 . , l' 1 Cont'd on Plate 89 !� I PLATE B-88 I Petra Geotechnical, Inc. 31 I BORING LOG HOLLOW STEM Project : Redhawk, Rancho California Location Tract No. 23065 Boring No. : 68 Cont'd Elevation Dill Dote: 3/20/89 Job Ab. : 298-87 Lo99ed By : CB & TD Driving We,9 t: 140 lbs. Cr. �� N ;° W I Q. Description of Nva feria/s 0 L.h eij o Q a� � o Io°ikb JUa `0 � � V I SW BEDROCK - PAUBA FORMATION 15 Sandstone: Light brown; fine to coarse grained; 26 118 6.0 Idamp; dense - - 36 41 III SPT 49 Total Depth - 25-5 feet No Groundwater _ CODE: SPT = Standard Penetration Test _ — _. I I - - . I — PLATE B-89 IPetra Geotechnical, Inc. 90 IBORING LOG HOLLOW STEM I Proiecf:Redhawk, Rancho California Location: Tract No. 23065 Boring No. 69 Peva/ion: Drill Dole: 3/90/89 Job j. : 298-87 Logged By: CB & TD Driving Weight: 140 lbs. k 111 DescrIofion of Mo erio/s o oho e Q a 0 3 c 0 � a I ck 161" ) lc �R. U � � u al03 p I 'ALLUVIUM Silty Sand: Brown; sand fine grained; fairly SM clean; damp; loose @3.0 ft. : 2 11: 98 6.1 Loose. 2 I - 5 - - ' - T I @6.0 ft. : SPT Sand: Light reddish-brown; fine to coarse SW II: grained; clean; damp ;to moist; medium dense. 3 I@9.0 ft. : 4 Dense 6 I[: 101 2.9 I - 10- 2 3 II SPT 6 I - 15 - @15.0 ft. : 7 ICoarser grained 6 [ 105 1 .9 I@18.0 ft. : Silty Sand with some Clay: Light brown; sand IF SPT I fine to medium grained; moist; medium dense. 8 -20 ' ICont'd on Plate B-91 1 PLATE B-90 IPetra Geotechnical, Inc. 91 BOR/NG LOG HOLLOW STEM ' Project ; Redhawk, Rancho California Location: Tract No. 23065 Boeing No. 69 Cont'd Elevation Drill Dale: 1/20/29 ' Job Ivh_ = 298-87 [o99ed By : CB & TD Driving Weight 140 lbs. ' S � N� ,� Descr%pf%oi7 of Nla erio/s Q tn i- a Q Q o Q cc ' @21.0 ft. : Sand: Light reddish-brown; fineto coarse SW 10 grained; damp; dense it 103 2.4 25- 10 SPT 14 II @27.0 ft. : 13 Ir- Some gravel 18 IL 106 2.8 ' - 30- 7 10 1 SPT 4 I @33.0 ft. : 6 I Silty Sand: Light brown; sand fine-to medium SM 10 102 12.3 grained; damp; medium dense - 35- — ' 6 i10 SPT 10 II @ 39.0 ft. : 9 IF 101 10.8 I -40 Fine Grained; moist 14 Total Depth - 40.0 feet ' No Groundwater CODE: SPT = Standard Penetration Test I PLATE B-91 IPetra Geotechnical, Inc. 9.2- IBORING LOG HOLLOW'ISTEM ' pro/eci ,RedhaWk, Rancho California. Location: Tract No. 23065 Boring No. : 79 Eleva/ on: Drill. Dote : 3/20/89 job Ala ; 298-87 Lo9ged By : CB & TD Driving Weight: 140 lbs. II 1 Descrior-ion of A a 1erio/s Q L k e Q o Q q � v � � U � o° � o 1 V I ALLUVIUM Sand: Light brown; fine grained; moist; loose. SP/ SM @3.0 ft. : 3 Medium dense 5 II: 96 12.4 1 - 5 _ I @6.0 ft. : 2 SPI Silty Sand with some Clay: Light brown; sand 2II: fine to coarse grained; moist; medium dense 3 @9.0 ft. : 3II: 101 12.4 - 10- Fine grained 4 II 1 3 Z [ SPI' 4 - 15- 6 I @15.0ft. : 6 117 113 7.4 Assabove; decreased clay I 3 Ir SPT 4 II20 Cont'd on Plate B-93 f 2 PLATE 8-92 IPetra Geotechnical, Inc. 93 I BORING LOG HOLLOW STEM ' Project Redhawk, Rancho California location Tract No. 23065 Boring No. 7o cont d Elevation Drill Dofe: 3/20/89 .lobes. ' 298-87 Lo9ged By: CB & TD Driving Weight 140 lbs. 1 v0 2� CALL ` �\• Q Description of M,ateria/s Q a o> o -, 1 m � 0 � a I o U � `D � O� k `p I SM/ SC 5 F 103 7.8 I - — _ @24.0 ft. : Sand: Light ht brown; fine to coarse grained; SW 10IF: SPT g -25 _ moist; dense 14 ' @27.0 ft. : — As above with intermediate layers of fine SW & 10 clayey sand; moist; dense SC 10 108 2.6 II I -30 - @30.0 ft, : 3 Silty Sand: Brown, sand fine grained;. moist; 3 ir SPT3 medium dense Total Depth - 31.5 feet No Groundwater --- II CODE : SPT = Standard Penetration Test I - . PLATE B-93 IPetra Geotechnical, Inc. 94 1 BORING LOG HOLLOW STEM 1 Project: Redhawk, Rancho California Location: Tract No. 23067 Boring No. : 71 Peva/ion: Drill Dote : 3/20/89 job Ato. : 298-87 Logged By : CB & TD Driving Weight:14o lbs. I h-Lz at 2-L �L 1� Oesc�ipfioi7 of Mo e�io/s Q 0--..4, Q o O 4 U � � U � 4� o NV ALLUVIUM ' Silty Sand: Dark brown; sand fine to medium SM grained; moist; loose 1 @3.0 ft. : Medium dense and porous 2F 104 6.3 3 1 - 5 - - — @6.0 ft. : Medium dense; decreased porosity 46 [ SPT 7 1 @9.0 ft. : 5 _ 10. Light reddish-brown; moist; medium dense 5 107 6.0 I I As above 4 li: 4 SPT ~— 4 I - 1 5- 4 II As 11: 106 106 6.7 As above II _3 3 SPT IF: ' As above n 3 20 / %' 17 1 Cont'd on Plate B-95 !� • 1 PLATE B-94 IPetra Geotechnical, Inc. 95 I BORING LOG HOLLOW '.STEM ' Project . Redhawk, Rancho California Location: Tract No. 23067 Boy/meq No. : 71 cont d E/evotion Drill Dote : 3/20/89 job /U9 : 298-87 Lo9ged By: CB & TD Driving Weight: 140 lbs. 1 h v Descr/p//ori o; Ma`erio/s 0 o Q co 0 0 i v r, U4 l5m v N � Jv ( � 0- � V I @21.0 ft. : SM5 Silty Sand: Light reddish-brown; sand fine to 6 105 9.5 III ' medium grained; fairly clean; moist; dense — II 3 FSPT - 25- 4 6 IBEDROCK PAUBA FORMATION 32 Gravelly Sandstone: Light brown; sand fine to SO 128 6.4 Ir- Icoarse grained; some clay; moist; dense - — I - 30- @30.0 ft. : 26 26 - SPT Sandstone: Light brown; fine to coarse grained; 50 damp; dense 42 105 4.3 50 35- Total Depth - 34.0 feet No Groundwater — II CODE: SPT = Standard Penetration Test 1 - _ 1 — I — PLATE B-95 IPetra Geotechnical, Inc. 96 IBORING LOG HOLLOW STEM Iproject : Redhawk, Rancho California [OCOf/O/7:Tract No. 23067 Boring No. : 72 Peva/ion: Drill Dale : 3/20/89 JobAb. : 298-87 lo9ged By: CB & TD Driving Weight 140 lbs. 1 Ll Q N� k„' �� ' �C Descriofion of Morerio/sI . Q 4 o Q o 0 0 3 � a I ALLUVIUM Silty Sand: Dark brown; sand fine to SM medium grained; moist; loose I 21 11 102 7.1 -5 - ' @6.0 ft. : S Silty Sand with some clay; light reddish-brown; SM/ 8II: SPT sand fine to medium grained; moist; medium SC 6 IIdense. 6 gII: 112 9.1 I - 10 - 3 . 2 F SPT 3 I - 15- @15.0 ft. : IIAsabove; very moist 5 C 104 9.2 I 4 1[1SPT _4_, 4 I -20--------7,.., 2 ICont'd on Plate B-97 • I PLATE B-96 IPetra Geotechnical, Inc. 91 IBOR/NG LOG HOLLOW STEM Project. Redhawk, Rancho California Location: Tract No. 23067 IBoiin9 No. : 72 Cont'd Elevation: Drill Dote.: 3/20189 Job IV° ' 298-87 Lo9ged Dy: CB & TD Driving Weight: 140 lbs. II I k g s ` Descrio Tori of Moter/o/5 -o Q c h LL a -1-.....p Q ' @21.0 ft. : Silty Sand: Light reddish-brown; sand fine to 6II: 108 5. 1 coarse grained; trace of clay; moist; dense. 7 I @24.0 ft. : 4 I Claying Sand: Light reddish-brown; sand fine 7 SPT ' 25- to medium grained; very moist; dense 12 BEDROCK - PAUBA FORMATION 20 Silty Sandstone: Light brown; fine to 46 [ 114 9.5 coarse grained; moist; dense 19 32 SPT I - 30- 55 --- Total Depth - 31. 5 feet I No Groundwater --- CODE: CODE: SPT = Standard Penetration Test — L— — 1 -- I — I PLATE B-97 IPetra Geotechnical, Inc. 9t IBORING LOG HOLLOW STEM Redhawk, RanchoCaliforniaproject : California LOCOf%o/1: Tract No. 23067 I Boring No. : 73 Elevation' Drill Dates 11717s9 Job No ; 298-87 Lo99ed By: CB & TD Driving Weight:14o the I CIN LL ` 1) 1 h .� Descriofioin of Maier/a/5 Q 0 h a Q c ry 0 I I ALLUVIUM SM — Silty Sand: Brown; sand fine to medium grained; moist; loose. I @3. 0 ft. : 4II: 109 11 .4 Silty Sand: Reddish-brown; sand fine to coarse SM 6 -5 grained; damp; medium dense — 5 IF: 111 7 SPT 9 I@9.0 ft. : 5 As above 6 1[1 I - 10 - I 4 4 IF: SPT 4 I - - -15 - @15. 0 ft. : I As above 6 6 [ 107 6.0 I 3 5 SPT Irl 5 -20 I ICont'd on Plate B-99 — I PLATE B-98 IPetra Geotechnical, Inc. 94 IBORING LOG. HOLLOW STEM I project: Redhawk, Rancho California LOCO/%o/7: Tract No. 23067 Boring No. , 73 Cont'd Elevotion: Drill Dale: 1/71 /RQ JoHb : 298-87 Logged By: CB & TD DriV/nq Weight Ian lbs i h� ,a\° Oescripfion of Mo`erio/s 0 Q L h a n c i*, .--, 1 Z_ � v O ° m `^ O NQi I @21.0 ft. : Silty Sand: Light reddish-brown; sand SM 10II: 107 4.2 __ fine to medium grained; moist; dense II 4 SPT -25- 4 4 I@27.0 ft. : 7 As above 9II- 103 2.6 ITotal Depth - 28. 0 feet ' .-,_ No Groundwater - . - CODE: SPT = Standard Penetration Test I 1 I — I — PLATE B-99 IPetra Geotechnical, Inc. /00 III BORING LOG HOLLOW STEM I Project: Redhawk, Rancho California Location Tract No. 23067 Boring No. 74 Elevation Drill Dole: 3/7l/R9 job Ab. : 298-87 Logged By : CB & TD Driving Weight: 140 ,hs. 1 o 49 l- .-i )-C t 1 ° II Lt. h • Q. Descrio/ion of M,oterio/s v Q `^ o 4) L.) 0 1 i O LI -� QL UR � u � 4� �\ � Q RESIDUAL SOIL I Clayey Sand: Reddish-brown; sand fine to medium SC — erained: moist: loose BEDROCK - PAUBA FORMATION --- I Sandstone: Light brown; fine to coarse — grained; dry to damp; dense - 5 - - _ I I I -10 - @10. 0 ft. : 17 C 87.9 17.6 Sandy Silt: Light reddish-brown; damp; dense 1 I -15 - - 1 _ I — -20 ' �/ 1 Cont'd on Plate B-101 / — • I TeC21 9234l _ IPetra Geotechnical, Inc. /0 / I BORING LOG HOLLOW STEM IProiecf . Redhawk, Rancho California LOCOf'ion Tract .No. 23067 Boring Ala : 74 Cont'd Elevation! Drill Ave: 3/21/89 job No. : 298-87 Co9ged By: CB & TD Driving Weight: 140 lbs. 1 O �� 1i-ILL � ) I ILL I Q Descripf/or7 of Matr/ods Q 'n a e \ o •Q I 3 � I 0 UQc � 4° � L.) I @20.0 ft. : 13 No Recover} Sandstone: White to very light reddish- 29 brown; fine to coarse grained; damp; dense „ 1 II II II -25- n I n II II ' -30- 42 126 7.4 @30. 0 ft. : 50 Gravelly Sandstone: Light reddish-brown; fine to coarse grained; damp; very dense I II I 35 - II II I II I II II @30. 0 ft. : IISandsandtone: Light reddish-brown; fine to coarse I -40- grained; damp; very dense 35 103 11 .9 42 Iit Total Depth 41. 0 feet No Groundwater II I PLATE B-101 IPetra Geotechnical, Inc. ID) IBORING LOG HOLLOW STEM ' Project; Redhawk, Rancho California Location: Tract No. 23067 Boring No. : 75 Elevation: Drill Dote : 3121/x9 Job 298-87 Lo9ged By : CB & TD Driving Weight: 140 lbs. Descriorion of Mo.`erio/s on o Q Q 0 0 i RESIDUAL SOIL I Silty Sand: Reddish-brown; sand fine to medium grained; dry; .loose I _ BEDROCK - PAUBA FORMATION Sandstone: Light reddish-brown; fine to — coarse grained; damp; dense — 1 ^ 5 - I - I --- I ' - 10- @10. 0 ft. : As above 1619 ® 114 1 .0 I - 15- -- 1 ' Cont'd on Plate B-103 — I PLATE B-102 Petra Geotechnical, Inc. It ' BOR/NG LOG HOLLOW STEM ' Project . Redhawk, Rancho California Location: Tract No. 23067 Boring No. ; 75 Cont'd Eievotion: Drill Dote . i171 /B9 Job ib. ' 298-87 Lo9ged By . CB & TD Drivtng Weight: 140 the 1 Ip 1 � NLL C) loo I Q Oescr,orion of Mo` cio/s Q Cy.-.-,k4 Q \ a 0 I a Jv � ro Q° Flo II 16 IL 115 1 .1 @21.0 ft. : 19 As above ' -25_ .._ 1 _, ' -30-` @30. 0 ft. : 11 1- 101 13.3 As above. 16 I Total Depth - 31.0 feet — No Groundwater 1 . t 1 --_- • PLATE B-103 I Petra Geotechnical, Inc. /DU I BORING LOG HOLLOW STEM ' project : Redhawk, Rancho California LOCOf%Orl: Tract No. 23066 Boring No. 76 Peva/roll: Drill Dole : 3/71189 JobAb ' 298-87 LO99ed By : CB & TD Driving Weight 14n 1hc_ I Descripfior7 of Ma Brio/s0 3 o m - Q Q ' ., Jvc `ou 4° Flo I TERRACE DEPOSITS SC — Clayer Sand: Reddish-brown to pink; sand fine grained; some gravel; dry I to damp; very dense. _ - 5- 711 I - ' BEDROCK - PAUBA FORMATION --- Gravelly Gravelly Sandstone: Pale brown; fine to ' - 10 - coarse grained; dry; dense. 18 24 104 1 .7 I - 15 - I @18.0 ft. : — Sandstone: Light brown; fine to coarse ---.. grained; damp; very dense. !� ' Cont'd on Plate B-105 — I PLATE B-104 IPetra Geotechnical, Inc. /05 1 BORING LOG HOLLOW STEM 1 Project : Redhawk, Rancho California Location: Tract No. 23066 Boring No. : 76 Cont'd Elevation: Drill Dole : 3/21 /a9 Job Imo. : 298-87 [o99ed By : CB & TD Driving Weight: 140 the • 1 v Descri tion of Ma terio/s Q h o o� N QIL 0 0 i V 1 18 I- 109 6.3 20 1 1 1 @26.0 ft. : Silty Sandstone: Light-brown; fine ro coarse grained; damp; very dense 1 -30 r 19 r 111 6.7 29 1 Total Depth - 31.0 feet No Groundwater I I 1 i - . •1 • PLATE B-105 1 Petra Geotechnical, Inc. I©' BORING LOG HOLLOW STEM Redhawk, Rancho California P/•D/eCf� Location: Tract No. 23066 Boring No. : 77 Elevation: Drill Dote : 3/21/89 Job No. : 298-87 Lo9ged Dy: CB & TD Driving IV✓ei9bt: 140 lbs. h 1)VDescriptionor" M.o lerio/s -0 p 3 a m a Q a ' Y � v oi � u �� o 4 l� O V RESIDUAL SOIL — I Silty Sand: Reddish-brown; sand fine to SM medium grained; moist; loose _ BEDROCK - PUABA FORMATION — Silty Sand: Light reddish-brown; fine to coarse grained; damp; dense -5 - I -10 - @10.0 ft. : 14 As above 117 18 111 5.6 I I -15 - -- I '----- -20 @20.0 ft. : 1-1 102 14.9 As above �q ITotal Depth - 21.0 feet No Groundwater I PLATE B-106 I Petra Geotechnical, Inc. /0'2 IBORING LOG HOLLOW STEM 1 Redhawk, Rancho California project: OCO i0/7: Tract. NO. 23064 Boring Na : 78 E/evafion Drill Dote : 3/21/89 .loblb. : 298-87 Loggeci By: CB & TD Driving Weight: 140 lbs. 1 I Sr, �� �� 1 . of 1 h 0"-.`ti C J J `- I Desc�io 70r7 Ma Brio/s 4) Q - 0 Q a\ o 4� 7 J � � � � l I RESIDUAL SOIL — Silty Sand: .Redd}sh-brown; sand fine to medium SM grafi e ; mois oose BEDROCK - PAUBA FORMATION —' I Silty Sandstone: Light reddish-brown; fine to coarse grained; damp; dense _ 1 — rL_____ — I - 10 - @10.0 ft. : 24 11[ 111 7.7 Very Dense 29 I — 013 ft. : Refusal 1 Total Depth - 13.0 feet — No Groundwater -15 - — 1 --, —_ 1 — 1 _______ — I - • I — PLATE B-107 IPetra Geotechnical, Inc. /08 I IJ.N. 298-87 ITABLE I LOG OF TEST PITS • Test Pit Depth Number (ft. ) Description I1 ALLUVIUM I 0 .0 - 5. 0 SAND (SW) : Light brown; fine to coarse grained; gravel traces; slightly silty; moist; loose to medium dense. I 5 .0 - 18 . 0 + SAND (SW) : Light brown; fine to coarse grained; frequent intermediate layers of fine to medium Silty Sand (SM) and fine to coarse Clayey Sand (SC) ; very moist; medium dense. Caving at 0 . 0 to 5 . 0 feet INo Groundwater Encountered 11/23/87 ' 2 ALLUVIUM I 0 . 0 - 2 . 5 SAND (SW) : Brown; fine to coarse grained; gravel traces; slightly silty; moist; loose. I 2. 5 - 10 . 0 CLAYEY SAND (SC) : Brown; sand fine to medium grained; about 10% fine gravel; dry to damp at depth; medium dense and porous. I10 . 0 - 14 . 0 SILTY SAND (SM) : Light brown; sand fine to medium grained; about 10% fine grained; Idamp to moist; medium dense. 14 . 0 - 17 . 0 + GRAVELLY SILTY SAND (SM) : Light brown; sand fine to coarse grained; about 25% I coarse gravel and small cobbles; trace of clay binder; moist; medium dense. I No Caving No Groundwater Encountered 11/23/87 I . I 1 y929c ,09 1 • J.N. 298-87 Page 2 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 3 ALLUVIUM 0 . 0 - 17 . 0 + SAND (SM) : Light brown; fine to coarse grained; gravel traces; silty; frequent intermediate layers of dark brown, fine to medium Silty Sand (SM) and light brown, ' fine to coarse Clayey Sand (SC) ; moist and loose in upper 3 . 0 feet; dry to damp and medium dense below; moist at 13 . 0 feet; ' small cobbles at 15. 0 feet. No Caving No Groundwater Encountered 11/23/87 4 ALLUVIUM ' 0 . 0 - 18. 0 + SAND (SW-SM) : Light brown; fine to coarse grained; silty; intermediate layers of dark brown, fine to medium Silty Sand ' (SM) ; moist to very moist at depth; loose in upper 3 . 0 feet; medium dense below. ' No Caving No Groundwater Encountered 11/23/87 ' 5 ALLUVIUM 0 . 0 - 3 . 0 SAND (SW-SM) : Light brown; fine to coarse ' grained; intermediate layers of dark brown, fine to medium Silty Sand; moist; loose. SOIL 3 . 0 - 7. 0 CLAYEY SAND (SC) : Brown; sand fine to medium grained; 10 to 20% gravel; damp; dense. //D 1 J.N. 298-87 Page 3 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' S - Cont'd. BEDROCK - PAUBA FORMATION 7 . 0 - 10. 0 + SANDSTONE: Light brown; fine to very coarse grained; slightly silty; friable; 15 to 20o coarse grave; some small cobbles; damp; dense. ' No Caving No Groundwater Encountered 11/23/87 6 ALLUVIUM 0 . 0 - 16. 0 + SILTY SAND (SM) : Brown; sand fine to ' medium grained; intermediate layers of light brown, fine to coarse sand (SM) ; moist; loose in upper 2 . 0 feet; medium ' dense below. No Caving No Groundwater Encountered 11/23/87 1 7 ALLUVIUM ' 0 . 0 - 14 . 5 + SILTY SAND (SM) : Brown; sand fine to medium grained; intermediate layers of light brown, fine to coarse Sand (SW) ; ' moist; loose in upper 4 . 0 feet; medium dense below. No Caving No Groundwater Encountered 11/23/87 . 1 nn 1 ' J.N. 298-87 Page 4 1 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 8 ALLUVIUM 0. 0 - 3 . 0 SILTY SAND (SM) : Dark brown; sand fine to ' medium grained; moist; loose. 3 .0 - 15.0 + SILTY SAND (SM) : Light brown; sand fine I to medium grained; gravel traces; occasional cobble; occasional intermediate layers of fine to coarse Sand ( SW) ; damp to 6. 0 feet; moist below; medium dense. No Caving No Groundwater Encountered 11/23/87 9 ALLUVIUM 1 0 . 0 - 4 . 0 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose to slightly dense. COLLUVIUM/OLDER ALLUVIUM 1 4. 0 - 11. 0 + SILTY SAND (SM) : Light brown; sand fine to coarse grained; some fine grave; damp to 9 . 0 feet; moist below; medium dense to ' 6 . 0 feet; dense below. No Caving No Groundwater Encountered 11/23/87 1 10 ALLUVIUM 1 0 . 0 - 3 . 0 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose to slightly dense. 1 - 1 1 ' J.N. 298-87 Page 5 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 10 - Cont'd. COLLUVIUM/OLDER ALLUVIUM 3 . 0 - 8. 0 + SILTY SAND (SM) : Light brown; sand fine to coarse grained; some gravel; moist; ' dense. No Caving No Groundwater Encountered 11/23/87 11 ALLUVIUM ' 0 . 0 - 4 . 0 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; , loose. 4. 0 - 15. 0 + SAND (SW) : Light brown; fine to medium grained; slightly silty; damp to 6 . 0 feet; ' moist below; medium dense. No Caving No Groundwater Encountered 11/23/87 ALLUVIUM 0. 0 - 2 . 5 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose. ' COLLUVIUM/OLDER ALLUVIUM 2 . 5 - 5 . 0 SILTY SAND (SM) : Light brown; sand fine to medium grained; slightly clayey; some gravel; occasional small cobbles; moist; dense. 1 1 1�� 1 ' J.N. 298-87 Page 6 TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 12 - Cont'd. 5 . 0 - 10 . 0 + SILTY SAND (SM) : Light brown; sand fine ' grained; occasional thin bands of Sandy to Clayey Silt; moist; dense. ' No Caving No Groundwater Encountered-11/24/87 13 ALLUVIUM 0 . 0 - 1. 5 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose. COLLUVIUM/OLDER ALLUVIUM ' 1. 5 - 7 . 0 CLAYEY SAND (SC) : Brown; sand fine to medium grained; trace of fine gravel; ' damp; dense. BEDROCK - PAUBA FORMATION 7 . 0 - 9 . 0 + SANDSTONE: Light brown; fine to medium grained; slightly damp; dense. ' No Caving No Groundwater Encountered 11/24/87 ' 14 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND ( SM) : Dark brown; sand fine to medium grained; moist; loose. i 14 1 ' J.N. 298-87 Page 7 TABLE I 1 LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description ' • 14 - Cont'd. 3 . 0 - 15. 0 + SILTY SAND (SM) : Light brown; sand fine ' to medium grained; slightly clayey; moist to very moist at depth; medium dense. No Caving No Groundwater Encountered 11/24/87 ' 15 ALLUVIUM • 0 . 0 - 3 . 0 SILTY SAND (SM) : Dark brown; sand fine to 1 medium grained; moist; loose. 3 . 0 - 17 . 0 + SILTY SAND (SM) : Brown; sand fine to ' medium grained; occasional small cobbles; moist to very moist at depth; medium dense; slightly clayey below 7 .0 feet. No Caving No Groundwater Encountered 11/24/87 16 ALLUVIUM ' 0. 0 - 4 . 0 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose to slightly dense. ' 4 . 0 - 14 . 0 + SILTY SAND (SM) : Brown; sand fine to coarse grained; slightly damp to 6 . 0 feet; moist below; medium dense; some gravel and ' small cobbles below 12 . 0. feet. No Caving No Groundwater Encountered 11/24/87 • 1 ' >l5 1 J.N. 298-87 Page 8 TABLE I ' LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 17 ALLUVIUM 0.0 - 3 . 0 SILTY SAND (SM) and CLAYEY SAND (SC) : ' Layered; brown and dark bray; both fine to medium grained; moist to wet; loose. Slope Wash and Alluvium. ' 3 . 0 - 5. 0 CLAYEY SAND (SC) : Brown; sand fine to medium grained; some gravel; damp; dense. Slope Wash ( ?) 5 . 0 - 9. 5 SILTY SAND (SM) : Brown; sand fine to medium grained; intermediate thin layers ' of fine to coarse Sand (SW) and occasional fine Clayey Sand (SC) ; damp; medium dense. Alluvium. ' 9 . 5 - 14 . 0 SAND (SP-SM) : Light gray; fine grained; silty; damp to moist; medium dense; occasional intermediate thin layers of ' brown Sandy Silt - Silty Sand. Alluvium. BEDROCK - PAUBA FORMATION 14 . 0 - 15. 5 + SANDSTONE: Light brown; fine to coarse grained; damp; dense. Caving at 9. 5 to 14. 0 feet No Groundwater Encountered 11/24/87 0. 0 - 16. 0 + SILTY SAND (SM) : Dark brown; fine to medium grained; moist to very moist at depth; loose to 4 . 0 feet; slightly dense to approximately 6 . 0 feet; medium dense below; brown; at 7 . 0 feet; some gravel at 13 . 0 feet. No Caving No Groundwater Encountered 11/24/87 1 1161 1 J.N. 298-87 Page 9 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 19 ALLUVIUM 0.0 - 11. 0 SILTY SAND (SM) : Brown; sand fine to ' medium grained; some gravel; moist; loose in upper 3 . 0 feet; medium dense below. ' OLDER ALLUVIUM 11. 0 - 15 . 0 + SILTY SAND (SM) : Light brown; fine ' grained; slightly micaceous; some oxide staining; moist; dense. No Caving No Groundwater Encountered 11/24/87 ' 20 ALLUVIUM 0 . 0 - 15 . 0 + SILTY SAND (SM) : Brown; fine to coarse ' grained; some gravel; moist and loose in upper 4 . 0 feet; damp and medium dense below. ' No Caving No Groundwater Encountered 11/24/87 21 ALLUVIUM 0 . 0 - 2 . 5 SILTY SAND (SM) : Dark brown; sand fine to medium grained; moist; loose. 2. 5 - 14 . 5 + SILTY SAND (SM) : Brown; sand fine to ' medium grained; some gravel; slightly clayey; damp and dense to 6. 5 feet; moist and medium dense to dense below. ' No Caving No Groundwater Encountered 11/24/87 ' 1 ,T49239 N7 ' J.N. 298-87 Page 10 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 22 0.0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose. (SM) ' Alluvium 3. 5 - 18 . 5 + SILTY SAND: Brown; sand fine to coarse ' with scattered subrounded gravel; damp; slightly porous and medium dense to 10. 0 feet; moist; slightly porous and medium ' dense below; becomes wet; less porous and medium dense below 14. 0 feet. No Caving No Groundwater Encountered 12/10/87 ' 23 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose. (SM) Alluvium ' 3 . 0 - 19 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 9 . 0 feet; moist; slightly porous and medium dense below; becomes wet; less porous and medium dense below 15 . 0 feet. (SW) ' Alluvium No Caving No Groundwater Encountered 12/10/87 1 . 24 0. 0 - 1. 0 SILTY SAND: Dark brown; sand fine to ' medium grained; moist and loose. (SM) Alluvium. 1 1 ' J.N. 298-87 Page 11 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 24 - Cont'd. 1.0 - 19 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp and medium dense to dense to 9. 0 feet; moist to medium dense below; becomes wet and Iless porous below 13 . 0 feet. Alluvium No Caving No Groundwater Encountered 12/10/87 25 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 5 - 19. 0 + SILTY SAND: Brown; sand fine with ' scattered subrounded gravel; damp; slightly porous and medium dense to 7 . 0 feet; moist; slightly porous and medium dense below; becomes wet and less porous ' below 15 . 0 feet. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 ' 26 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 5 - 18 . 0 + SILTY SAND: Brown; sand fine with scattered subrounded gravel; damp; slightly porous and medium dense to 6 . 0 feet; moist; slightly porous and medium dense below; becomes wet; less porous with more cobbles below 10. 0 feet; medium dense. (SM) Alluvium ' No Caving No Groundwater Encountered 12/10/87 1 1 J.N. 298-87 Page 12 1 TABLE I 1 LOG OF TEST PITS Test Pit Depth 1 Number (ft. ) Description 27 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist 1 and loose. (SM) Alluvium 3 . 5 - 10.0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel and 1 cobbles; dry to damp and very porous to porous and medium dense in place; becomes damp to moist and less porous below 8 . 0 I feet. ( SM) Alluvium 10 .0 - 12. 0 + BEDROCK: Siltstone; dark brown to brown; 1 highly weathered with random slickensides ( creep) to 11. 0 feet; very firm with less evidence of creep below. Pauba Formation I Moderate Caving at 0 to 3 . 5 feet No Groundwater Encountered 12/10/87 I28 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium I 2. 5 - 16 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel; moist; slightly porous and medium dense; I becomes wet; less porous and medium dense below 10 . 0 feet. (SM) Alluvium I No Groundwater Encountered 12/10/87 No Caving 1 29 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium I 2. 5 - 5. 0 + BEDROCK: Sandy Siltstone; dark brown to brown; highly weathered with random slickensides (creep) to 4. 0 feet; well I indurated below. Pauba Formation No Caving No Groundwater Encountered 12/10/87 1 I ^ i J.N. 298-87 Page 13 TABLE I ' LOG OF TEST PITS Test Pit Depth ' Number (ft. ) Description 30 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist loose. ( SM) Alluvium 3 . 0 - 18 . 5 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; dry to damp; ' porous and medium dense to 10 . 0 feet; becomes damp to moist; porous and medium dense below; becomes wet; less porous and medium dense below 15 . 0 feet. ( SM) Alluvium No Caving No Groundwater Encountered 12/10/87 31 0.0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist; loose. (SM) Alluvium 3 .0 - 13 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel and cobbles; dry to damp; very porous and medium dense to 11. 0 feet; becomes moist to wet; less porous and medium dense below. (SM) Alluvium ' No Caving No Groundwater Encountered 12/10/87 32 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist; loose. (SM) Alluvium 3 .5 - 12 . 5 + SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel and cobbles; damp; porous and medium dense t to 6. 0 feet; moist; slightly porous and medium dense below; becomes wet; less porous; medium dense with more gravel and ' cobbles below 9 . 5 feet. (SW) Alluvium No Caving No Groundwater Encountered 12/10/87 1 J.N. 298-87 Page 14 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description ' 33 (Topsoil scraped off) 0.0 - 14 . 5 + SILTY SAND: Light brown; sand fine to ' coarse with scattered subrounded gravel and cobbles; damp; porous and medium dense to 6 .0 feet; moist; slightly porous and medium dense below; becomes wet; less porous; medium dense with more cobbles below 10 . 0 feet. ( SM) Alluvium ' No Caving No Groundwater Encountered 12/10/87 34 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 0 - 13 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; dry to damp; very porous and medium dense; becomes ' moist to wet; less porous and medium dense below 11. 0 feet. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 35 0.0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 2. 0 - 15 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 8 . 0 feet; moist; slightly porous and ' medium dense below; becomes wet; less porous and medium dense below 12 . 0 feet. (SM) Alluvium ' No Caving No Groundwater Encountered 12/10/87 • a J.N. 298-87 Page 15 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 36 (Some soil scraped off) 0.0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 2 . 5 - 13 . 0 + SILTY SAND: Light brown; sand fine to ' coarse with scattered gravel; dry to damp; porous and medium dense to 7 . 0 feet; moist; less porous; becomes wet below 11..0 ' feet. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 37 0 . 0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist ' and loose. (SM) Alluvium 2 .0 - 16 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; dry to ' damp; porous and medium dense to 10. 0 feet; moist; less porous and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 38 (Some soil scraped off) 0. 0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 2. 0 - 11. 5 + BEDROCK: Sandstone to gravelly sandstone; light brown; dry to moist and dense; massive. Pauba Formation. ' No Caving No Groundwater Encountered 12/10/87 t 03 1 ' J.N. 298-87 Page 16 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 39 0 . 0 - 4. 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium ' 4.0 - 13 .0 + SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel; damp; porous and medium dense to 10. 0 ' feet; moist to wet; less porous and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 40 0 .0 - 1. 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 1 . 5 - 14. 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; dry; porous and medium dense below 6 .0 feet; becomes ' wet; less porous and medium dense at 9.0 feet. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 41 0 . 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 5 - 5 . 0 SILTY SAND: Light brown; sand fine to coarse with scattered subrounded gravel; damp; porous and medium dense. (SM) Alluvium 5. 0 - 6. 0 + BEDROCK: Sandstone; gravelly; light brown; fine grained; well indurated; damp. ' Pauba Formation No Caving No Groundwater Encountered 12/10/87 J.N. 298-87 Page 17 I TABLE I ILOG OF TEST PITS ^ Test Pit Depth Number ( ft. ) Description 42 0. 0 - 6 . 0 FILL, SILTY SAND: Dark brown; fine I grained; moist and loose. (SM) 6. 0 - 13 .0 + SILTY SAND TO SAND: Light brown; sand ' fine to coarse; moist and medium dense; becomes wet below 12.0 feet. (SM-SW) I Moderate Caving Below No Groundwater Encountered 12/10/87 I 43 0. 0 - 2. 0 FILL, SILTY SAND: Dark brown; fine grained; moist and loose. (SM) I 2. 0 - 14. 0 + SILTY SAND: Dark brown; fine grained; moist and loose to 7 .0 feet; wet and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/10/87 44 0. 0 - 14 . 0 + SILTY SAND: Dark brown; sand fine; moist; slightly porous; medium dense; becomes ' wet; less porous and medium dense below 12. 0 feet. (SM) Alluvium No Caving INo Groundwater Encountered 12/10/87 I 45 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 0 - 15. 0 + SILTY SAND: Brown; sand fine to coarse with scattered gravel; damp to moist; slightly porous and medium dense. ( SM) Alluvium I No Caving No Groundwater Encountered 12/10/87 I -Trc 97 3 9 ►as J.N. 298-87 Page 18 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 46 0.0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 0 - 15 . 0 + BEDROCK: Silty Sandstone; light brown; sand fine to coarse with scattered gravel; damp; slightly porous and medium dense to ' 5 . 0 feet; damp to moist and medium dense to dense below. (SM) Pauba Formation No Caving No Groundwater Encountered 12/11/87 47 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium ' 3 . 0 - 12 . 0 + BEDROCK: Silty Sandstone; light brown; sand fine to coarse with scattered subrounded gravel; damp and medium dense ' to 4 . 0 feet; dense below. Pauba Formation No Caving No Groundwater Encountered 12/11/87 1 48 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist ' and loose. (SM) Alluvium 3 . 0 5 . 0 CLAYEY SAND: Brown; sand fine; damp; slightly porous and medium dense. (SC) ' Weathered Bedrock 5 . 0 - 15 . 0 + BEDROCK: Sandy Siltstone and Sandstone; light brown to white; damp and dense. Pauba Formation ' No Caving No Groundwater Encountered 12/11/87 I I J.N. 298-87 Page 19 I TABLE I ILOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 49 0. 0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium I 2 . 0 - 15 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 7. 0 I feet; moist to wet and medium dense to dense below. (SM) Alluvium - No Caving I No Groundwater Encountered 12/11/87 I 50 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium I 3 . 0 - 14 . 0 SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 5. 0 feet; moist and medium dense to dense Ibelow. (SM) Alluvium 14 . 0 - 15 . 0 + BEDROCK: Sandy Siltstone; brown; sand I very fine; moist and dense. Pauba Formation I No Caving No Groundwater Encountered 12/11/87 I I 51 0 . 0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium I 2 . 0 - 4 . 5 CLAYEY SAND: Brown; sand fine; damp; slightly porous and medium dense. (SC) Weathered Bedrock I I 07 1 ' J.N. 298-87 Page 20 1 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 51 - Cont'd. 4 . 5 - 15. 0 + BEDROCK: Sandy Siltstone to Silty ' Sandstone; brown; sand fine; moist to dense. Pauba Formation ' No Caving No Groundwater Encountered 12/11/87 ' 52 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 0 - 15 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 8 . 0 feet; moist and medium ' dense to dense below. ( SM) Alluvium No Caving No Groundwater Encountered 12/11/87 53 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist ' and loose. (SM) Soil/Colluvium 2. 5 - 6. 0 CLAYEY SAND: Brown; sand fine to coarse ' with scattered subrounded gravel; damp; porous and medium dense. (SM) Soil/Weathered Bedrock. ' 6.0 - 15 . 0 + BEDROCK: Sandy Siltstone; brown; sand fine; moist and dense. Pauba Formation No Caving No Groundwater Encountered 12/11/87 . 1 gas 1 ' UJ.N. 298-87 Page 21 1 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 54 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Colluvium ' 3 . 0 - 7 . 0 CLAYEY SAND: Brown; sand fine to coarse with scattered subrounded gravel; moist and medium dense to 4 . 0 feet; dense below. ' (SC) Soil/Weathered Bedrock 7. 0 - 15. 0 + BEDROCK: Silty Sandstone; light brown; sand fine to coarse with scattered gravel; damp and dense. Pauba Formation No Caving No Groundwater Encountered 12/11/87 55 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist; loose. (SM) Colluvium ' 2. 5 - 9 . 0 SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; porous and medium dense to 8. 0 feet; moist and medium dense to dense below. (SC) Alluvium 9 . 0 - 15. 0 + BEDROCK: Sandy Siltstone; brown; sand fine; damp and dense. Pauba Formation No Caving No Groundwater Encountered 12/11/87 56 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium 3 . 0 - 9 . 0 SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; dry to damp; porous and medium dense to 6. 0 feet; moist and medium dense to dense below. (SM) Alluvium fa9 1 ' J.N. 298-87 Page 22 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 56 - Cont'd. 9 . 0 - 15. 0 + BEDROCK: Sandy Siltstone; brown; sand ' fine; damp and dense. Pauba Formation No Caving No Groundwater Encountered 12/11/87 57 0.0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium 3 . 0 - 10. 0 SILTY SAND: Brown; sand fine to coarse ' with scattered gravel; damp; porous and medium dense to 8 . 0 feet; moist and medium dense below. (SM) Alluvium ' 10 . 0 - 15 . 0 + SAND: Light brown; medium to coarse; moist and medium dense. (SW) Alluvium No Caving No Groundwater Encountered 12/11/87 58 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 .0 - 10 .0 SILTY SAND: Brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 8. 0 feet; moist and medium dense below. (SM) Alluvium 10 . 0 - 15 . 0 + SAND: Light brown; medium to coarse; moist and medium dense. (SW) Alluvium No Caving No Groundwater Encountered 12/11/87 /3e) I I J.N. 298-87 Page 23 I TABLE I ILOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description I59 0. 0 - 1. 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Soil I 1. 0 - 3 . 0 CLAYEY SAND: Brown; sand fine to coarse with scattered subrounded gravel; moist and medium dense. (SC) Soil/Weathered IBedrock 3 . 0 - 5 . 0, + BEDROCK: Gravelly sandstone; light brown; sand fine to coarse with scattered I subrounded gravel and cobbles; damp and dense. Pauba Formation I No Caving No Groundwater Encountered 12/11/87 I60 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium I 3 . 0 - 15. 0 +. SILTY SAND: Brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 8 . 0 feet; moist and medium Idense below. (SM) Alluvium No Caving No Groundwater Encountered 12/11/87 61 0 . 0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist Iand loose. (SM) Alluvium 2 . 0 - 15 . 0 + SILTY SAND: Light brown; sand fine to I coarse with scattered subrounded gravel; damp; porous and medium dense to 12 . 0 feet; moist and medium dense below. (SM) Alluvium I No Caving No Groundwater Encountered 12/11/87 I 18 1 1 ' J.N. 298-87 Page 24 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 62 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium ' 3 . 0 - 14. 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 9. 0 feet; moist and ' medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/11/87 63 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 0 - 16. 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 8. 0 feet; moist and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/11/87 64 0 . 0 - 2 .0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium ' 2 . 0 - 15 . 5 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; damp; porous and medium dense to 7 . 0 feet; moist and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/11/87 1 l3) 1 ' J.N. 298-87 Page 25 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 65 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium ' 3 . 0 - 9 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel and cobbles; damp porous and medium dense to ' 5. 5 feet; moist and dense below. ( SM) Alluvium No Caving No Groundwater Encountered 12/11/87 66 0 . 0 - 3 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 3 . 5 - 15 . 0 + SILTY SAND: Light brown; sand fine to coarse with scattered gravel; dry to damp; porous and medium dense to 12 . 0 feet; ' moist to wet; less porous and medium dense below. (SM) Alluvium No Caving No Groundwater Encountered 12/11/87 67 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium 2 . 5 - 17 . 0 + SILTY SAND: Brown; sand fine to coarse; damp to moist; porous and medium dense to 10. 0 feet; moist and medium dense below. (SM) Alluvium fModerate Caving at 0 . 0 to 4 . 0 feet No Groundwater Encountered 12/11/87 1 /33 I I J.N. 298-87 Page 26 I TABLE I ILOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description I68 0 .0 - 2 . 0 SILTY SAND: Dark brown; sand fine; moist and loose. (SM) Alluvium I 2.0 - 9 . 0 SILTY SAND: Brown; sand fine to coarse; damp; porous and medium dense. (SM) Alluvium ' 9.0 - 14. 0 + SAND: Light brown; medium to coarse; damp; medium dense. (SW) Alluvium ' Moderate Caving Below 9 . 0 feet No Groundwater Encountered 12/11/87 69 0. 0 - 2. 5 SILTY SAND: Dark brown; sand fine; moist and loose. ( SM) Alluvium I2 . 5 - 10 . 0 + SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 6 . 0 I feet; moist to wet and medium dense below. (SW) Alluvium I No Caving No Groundwater Encountered 12/11/87 I70 0 . 0 - 3 . 0 SILTY SAND: Dark brown;. sand fine; moist and loose. ( SM) Alluvium I 3 . 0 - SILTY SAND: Brown; sand fine to coarse with scattered subrounded gravel; damp; slightly porous and medium dense to 7. 0 I feet; moist to wet and medium dense below. (SW) Alluvium No Caving INo Groundwater Encountered 12/11/87 •I J.N. 298-87 Page 27 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 71 ALLUVIUM 0.0 - 5. 0 SAND: Light brown; fine to medium grained; damp; loose to medium dense; roots. (SW) ' 5 . 0 - 12 . 0 SILTY SAND: Light gray-brown; fine grained; roots to 8. 0 feet; damp; medium dense and porous to 9. 0 feet; decreased porosity below. (SM) BEDROCK - PAUBA FORMATION 12. 0 - 16 . 0 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; some fine gravel and occasional small cobbles; trace of clay; ' damp to moist and dense. No Caving No Groundwater Encountered 10/4/88 72 ALLUVIUM 0. 0 - 2. 0 SILTY SAND: Light gray-brown; fine grained; dry and loose. (SM) ' 2 . 0 - 7 . 5 SILTY SAND: Light brown; fine to medium grained; interbeds of gray coarse sand; dry; medium dense and porous. (SM) 7 . 5 - 14 . 0 SAND: Light gray; fine to medium grained; slightly silty; dry and medium dense; some ' roots; lenses of dry, porous Silty Sand. (SW and SM) BEDROCK - PAUBA FORMATION 14 . 0 - 15. 0 + SANDSTONE: Light red-brown; fine to coarse grained; slightly damp and dense. Caving @ 7. 5 to 14. 0 feet No Groundwater Encountered 10/4/88 1 /35 I I J.N. 298-87 Page 28 1 TABLE I ILOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description 1 73 0. 0 - 15 . 0 SAND: Light brown; fine to coarse grained; dry to 2.0 feet; moist below; medium dense; becomes wet at about 14. 0 feet. (SW) IBEDROCK - PAUBA FORMATION ' 15.0 - 16. 5 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; micaceous; very moist and - dense. I Caving to 15. 0 feet Seepage at 14 . 0 feet 10/4/88 ' 74 ALLUVIUM ' 0.0 - 8. 0 SAND: Light brown; fine to coarse grained; occasional gravel; dry to 2 . 0 feet; moist below; medium dense. (SW) IBEDROCK - PAUBA FORMATION 8 . 0 - 10 . 0 + SILTY SANDSTONE: Light red-brown; fine to Icoarse grained; micaceous; moist; dense. No Caving ' No Groundwater Encountered 10/4/88 75 ALLUVIUM I0 . 0 - 2 . 0 SAND: Light brown; fine to coarse grained; some surface gravel and cobbles; dry and I loose. ( SW) r I . I ' J.N. 298-87 Page 29 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 75 - Cont'd. BEDROCK - PAUBA FORMATION 2 . 0 - 5. 0 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; some gravel; trace of clay; moist and dense. No Caving No Groundwater Encountered 10/4/88 76 RESIDUAL SOIL ' 0 . 0 - 3 . 0 SILTY SAND: Brown; fine grained; dry and loose to medium dense; very porous. (SM) BEDROCK - PAUBA FORMATION ' 3 . 0 - 5. 0 + SILTY SANDSTONE: Light red-brown; fine to medium grained; occasional gravel and cobbles; dry and dense. ' No Caving No Groundwater Encountered 10/4/88 77 ALLUVIUM 0 . 0 - 8 . 0 SILTY SAND: Brown; fine to medium grained; ' gravel traces; dry to damp; medium dense and porous. (SM) ' 8 . 0 - 14 . 0 SAND: Light brown; fine to medium grained; silty; occasional cobbles; damp to moist and medium dense. ( SW-SM) 1 X37 t ' J.N. 298-87 Page 30 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description t77 - Cont'd. BEDROCK - PAUBA FORMATION ' 14 . 0 - 16. 0 + SANDSTONE: Light red-brown; occasional gravel; slightly micaceous; moist; dense. ' No Caving No Groundwater Encountered 10/4/88 78 ALLUVIUM ' 0.0 - 4 . 0 SILTY SAND: Brown; fine to medium grained; dry; loose to medium dense and porous. (SM) 4 . 0 - 6. 0 SILTY SAND WITH SOME CLAY: Dark brown; fine to medium grained; damp to moist and dense. (SM-SC) BEDROCK - PAUBA FORMATION 6. 0 - 8. 0 + SILTY SANDSTONE: Light red-brown; fine to ' coarse grained; trace of clay; slightly micaceous; moist and dense. ' No Caving No Groundwater Encountered 10/4/88 79 ALLUVIUM 0. 0 - 3 . 0 CLAYEY SAND: Brown; fine to medium grained; ' dry; loose in upper 12 inches; dense below. ( SC) 1 1 ' 138 ' J.N. 298-87 Page 31 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 79 - Cont'd. BEDROCK - PAUBA FORMATION 3 . 0 - 6. 0 + GRAVELLY SILTY SANDSTONE: Light brown; fine to coarse grained; some clay; 20 percent ' gravel and occasional small cobbles; moist and dense. No Caving No Groundwater Encountered 10/4/88 1 80 ALLUVIUM 0 . 0 - 2.5 SAND: Light brown; fine to coarse grained; layers of fine to medium Silty Sand below 1 .0 feet; dry; loose to medium dense. (SW and SM) 2 .5 - 4 . 0 CLAYEY SAND: Brown; gravelly; some cobbles; fine to coarse grained; moist and dense. (SC) BEDROCK - PAUBA FORMATION ' 4 . 0 - 10 . 0 + GRAVELLY SILTY SANDSTONE: Light brown; fine to coarse grained; some clay; 20 percent gravel and cobbles with sizes to 12 inches; moist and dense. No Caving No Groundwater Encountered 10/4/88 1 1 ! /39 J.N. 298-87 Page 32 TABLE I LOG OF TEST PITS ITest Pit Depth Number (ft. ) Description ' 81 ALLUVIUM 0. 0 - 9 . 0 SAND: Light brown; fine to coarse grained; ' slightly silty; gravel traces; dry and loose to 3 . 0 feet; moist and medium dense below. (SW) ' BEDROCK - PAUBA FORMATION 9. 0 - 12. 0 + SANDY SILTSTONE: Reddish-green; sand very fine to fine grained; slightly micaceous; moist and dense. No Caving No Groundwater Encountered 10/4/88 82 ALLUVIUM 0 . 0 - 6. 0 SAND: Light brown; fine to coarse grained; scattered cobbles; dry and loose to 3 . 0 feet; moist and medium dense below; some clay below 4. 0 feet. (SW to SC) ' BEDROCK - PAUBA FORMATION ' 6 .0 - 8. 0 + CLAYEY SANDSTONE: Reddish-green; very fine to fine grained; very moist and dense. Caving to 4 . 0 feet No Groundwater Encountered 10/4/88 83 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose. ( SM) �T� J.N. 298-87 Page 33 1 ' TABLE I LOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description ' 83 - Cont`d. 3 . 0 - 12.0 SAND: Brown; fine to coarse grained; silty; ' scattered gravel; cobbles below 10. 0 feet; moist and medium dense. (SM) IBEDROCK - PAUBA FORMATION 12 . 0 - 17 . 0 + SILTY SANDSTONE: Light brown; fine to coarse grained; scattered gravel and cobbles; moist and dense. No Caving ' No Groundwater Encountered 10/4/88 84 ALLUVIUM 0. 0 - 8. 0 SILTY SAND: Brown; fine to coarse grained; occasional gravel; dry and loose to 2 . 0 feet; moist and medium dense below; porous . (SM) ' 8 .0 - 15 .0 + SILTY SAND: Brown; fine to medium grained; some clay; moist to very moist; medium dense. (SM-SC) No Caving No Groundwater Encountered 10/4/88 85 ALLUVIUM ' 0 . 0 - 4 . 0 SAND: Light brown; fine to coarse grained; dry and loose. (SW) 4. 0 - 8 . 0 SILTY SAND: Brown; fine to medium grained; gravel traces; moist; medium dense and porous. (SM) Iicp 923 ciP1 1 I J.N. 298-87 Page 34 t TABLE I IILOG OF TEST PITS (I Test Pit Depth Number (ft. ) Description (I 85 - Cont'd. 8. 0 - 17.0 CLAYEY SAND: Dark brown; fine to medium II grained; moist to very moist at depth; medium dense. ( SC) IBEDROCK - PAUBA FORMATION 17. 0 - 20 . 0 + GRAVELLY SANDSTONE; Light brown; fine to coarse grained; scattered cobbles; moist and ' dense. No Caving INo Groundwater Encountered 10/4/88 I86 ALLUVIUM 0. 0 - 5. 0 SAND: Light brown; fine to coarse grained; dry and loose. (SW) I5.0 - 14 . 0 CLAYEY SAND: Dark brown; fine to medium grained; very moist; medium dense. (SC) I14. 0 - 17 . 0 + SILTY SAND: Brown; fine to coarse grained; some gravel; moist; medium dense ( SM) INo Caving No Groundwater Encountered 10/4/88 1 87 ALLUVIUM I 0. 0 - 11. 0 SILTY SAND: Brown; fine grained; dry and loose to 5. 0 feet; damp to moist and medium dense below; porous and compressible. (SM) I . I 1 J.N. 298-87 Page 35 ' TABLE I LOG OF TEST PITS ITest Pit Depth Number (ft. ) Description ' 87 - Cont'd. 11. 0 - 17 .0 SILTY SAND: Dark brown; fine to medium grained; moist and medium dense; some clay increasing with depth; grades to Clayey Sand at about 14 . 0 feet; also becomes moist ' to very moist and fairly dense. (SM to SC) 17 . 0 - 20 . 0 + SILTY SAND: Brown; fine to medium grained; ' coarser grained at depth; trace of clay; moist and medium dense. (SM) No Caving No Groundwater Encountered 10/4/88 ' 88 ALLUVIUM 0. 0 - 3 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose. ( SM) RESIDUAL SOIL 3 . 0 - 5 . 0 SANDY CLAY: Red-brown; moist and stiff. (CL) tBEDROCK - PAUBA FORMATION 5. 0 - 6. 5 + GRAVELLY SILTY SANDSTONE: Brown and light brown; fine to coarse grained; several cobbles; moist and dense. No Caving No Groundwater Encountered 10/4/88 1 . i 1V3 ' J.N. 298-87 Page 36 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 89 ALLUVIUM ' 0 . 0 - 2 . 0 SILTY SAND: Brown; fine grained; dry; loose. (SM) ' 2. 0 - 4. 0 CLAYEY SAND: Red-brown; fine to coarse grained; gravelly; moist; dense. ( SC) ' 4. 0 - 11. 0 SILTY SAND: Light brown; fine to coarse grained; trace of clay; moist to very moist; medium dense. ( SM) BEDROCK - PAUBA FORMATION ' 11. 0 - 18 . 0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; 25 to 30 percent gravel and rounded cobbles to 8 inches maximum size; ' trace of clay fines; very moist and medium dense to dense. No Caving No Groundwater Encountered 10/6/88 90 ALLUVIUM 0. 0 - 8 . 0 CLAYEY SAND: Brown; fine grained; dry and loose to 2 . 0 feet; damp and dense below. (SC) 8.0 - 10 .0 SILTY SAND: Brown; fine grained; damp and ' medium dense. (SM) BEDROCK - PAUBA FORMATION 1 10. 0 - 13 . 0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; 15 to 20 percent gravel and small cobbles; damp to moist and dense. No Caving No Groundwater Encountered 10/6/88 1 .i ' J.N. 298-87 Page 37 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 91 ALLUVIUM 0 . 0 - 5. 0 SILTY SAND: Brown; fine grained; slightly clayey; dry and loose to 3 . 0 feet; damp and medium dense below. (SM) I . BEDROCK - PAUBA FORMATION 5. 0 - 9. 0 + GRAVELLY SILTY SANDSTONE: Brown; fine to ' coarse grained; trace of clay; 15 to 20 percent gravel; some small cobbles; moist and dense. ' No Caving No Groundwater Encountered 10/6/88 92 ALLUVIUM 0. 0 - 7 . 0 SILTY SAND: Brown; fine grained; slightly clayey; dry and loose to 2 . 0 feet; moist and medium dense below. (SM) BEDROCK - PAUBA FORMATION 7 .0 - 10. 0 + GRAVELLY SILTY SANDSTONE: Brown; fine to coarse grained; some clay; 20 percent gravel and cobbles with sizes to 12 inches ; moist and dense. No Caving No Groundwater Encountered 10/6/88 ' 93 ALLUVIUM 0. 0 - 6 . 0 SILTY SAND: Brown; fine grained; slightly ' clayey; dry and loose to 2. 0 feet; damp to moist and medium dense to dense below. (SM) i1 1 �qS ' J.N. 298-87 Page 38 1 TABLE I ' LOG OF TEST PITS I Test Pit Depth Number (ft. ) Description ' 93 - dont'd. BEDROCK - PAUBA FORMATION 6 . 0 - 9. 0 + GRAVELLY SILTY SAND: Brown; fine to coarse grained; some clay; 15 to 20 percent coarse gravel and cobbles with sizes to 10 inches; moist and dense. No Caving No Groundwater Encountered 10/6/88 94 ALLUVIUM 0 . 0 - 10. 0 SILTY SAND: Brown; fine to medium grained; dry and loose in upper 2. 0 feet; damp and ' medium dense and porous below; some scattered gravel. (SM) ' BEDROCK - PAUBA FORMATION 10. 0 - 14 .0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; trace of clay; 10 to 15 percent gravel; moist and dense. (SW) No Caving No Groundwater Encountered 10/6/88 95 ALLUVIUM 0.0 - 4. 0 SILTY SAND: Light brown; fine to coarse grained; dry to damp and loose. (SM) 1 910 1 ' J.N. 298-87 Page 39 I ' TABLE I LOG OF TEST PITS tTest Pit Depth Number (ft. ) Description 95 - Cont'd. BEDROCK - PAUBA FORMATION 4. 0 - 8. 0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; 15 to 20 percent gravel; Isome small cobbles; moist and dense. No Caving No Groundwater Encountered 10/6/88 96 RESIDUAL SOIL ' 0. 0 - 1 . 5 SILTY SAND: Light brown; fine to medium grained; dry and loose. (SM) BEDROCK - PAUBA FORMATION 1. 5 - 5 . 0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; 15 to 20 percent coarse gravel; numerous cobbles up to 12 inches in size; damp and dense. ' No Caving No Groundwater Encountered 10/6/88 97 ALLUVIUM ' 0. 0 - 2 . 5 SILTY SAND: Light red-brown; fine to coarse grained; slightly clayey; some gravel; dry and loose. (SM) 1 1 /1!7 1 ' J.N. 298-87 Page 40 ' TABLE I LOG OF TEST PITS I Test Pit Depth Number ( ft. ) Description ' 97 Cont'd. BEDROCK - PAUBA FORMATION ' 2 . 5 - 10. 0 + SANDSTONE: Light red-brown; fine to coarse grained; slightly silty; trace of clay; scattered gravel and occasional cobbles; ' moist and dense. No Caving No Groundwater Encountered 10/6/88 98 ALLUVIUM 0 . 0 - 10 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose to 2. 0 feet; damp to moist and ' medium dense below. (SM) 10. 0 - 13 . 0 SAND: Light brown; fine to coarse grained; moist; medium dense. (SW) BEDROCK - PAUBA FORMATION 13 . 0 - 16 . 0 + SANDSTONE: Light brown; fine to coarse grained; slightly silty; trace of clay; occasional gravel; moist to very moist at ' depth; dense. Slight Caving Below 6. 0 feet No Groundwater Encountered 10/6/88 99 ALLUVIUM ' 0 . 0 - 6 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose to 2 . 0 feet; damp to moist and medium dense below. (SM) 6 . 0 - 8. 0 CLAYEY SAND: Brown; fine to coarse -grained; very moist and dense. (SC) t ty8 ' J.N. 298-87 Page 41 1 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 99 Cont'd. 8 . 0 - 12 . 0 SILTY SAND: Light brown; fine to coarse grained; occasional gravel; trace of clay; moist and medium dense to dense. (SM) ' BEDROCK - PAUBA FORMATION 12 . 0 - 14 . 0 + GRAVELLY SANDSTONE: Light red-brown; fine ' to coarse grained; 15 to 20 percent gravel and small cobbles; moist and dense. No Caving No Groundwater Encountered 10/6/88 ' 100 ALLUVIUM 0. 0 - 5.0 SILTY SAND: Brown; fine to medium grained; gravel traces ; dry and loose. (SM) BEDROCK - PAUBA FORMATION ' 5. 0 - 8 . 0 + GRAVELLY SANDSTONE: Red-brown; fine to coarse grained; some clay; 20 to 25 percent gravel and cobbles with sizes up to 12 inches; ' occasional boulder; moist and dense. No Caving No Groundwater Encountered 10/6/88 1 101 ALLUVIUM ' 0. 0 - 12 . 0 SILTY SAND: Brown; fine to medium grained; dry to 1 . 5 feet; damp to moist below; loose to 8 . 0 feet; medium dense and slightly porous below; scattered gravel and cobbles below 8. 0 feet. (SM) 789234/ �tf9 1 ' J.N. 298-87 Page 42 TABLE I LOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description ' 101 Cont'd. BEDROCK PAUBA FORMATION ' 12.0 - 16 . 0 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; some gravel; moist and dense. ' No Caving No Groundwater Encountered 10/6/88 102 ALLUVIUM ' 0. 0 - 6 . 0 SILTY SAND: Brown; fine to medium grained; dry to damp; loose to 2. 0 feet; medium dense below. ( SM) 6 . 0 - 7 . 5 CLAYEY SAND: Red-brown; fine to coarse grained; moist and dense. (SC) BEDROCK - PAUBA FORMATION 7. 5 - 10. 0 + SILTY SANDSTONE: Red-brown; fine to coarse ' grained; some clay; occasional gravel; moist and dense. No Caving No Groundwater Encountered 10/6/88 103 ALLUVIUM 0. 0 - 9. 0 SILTY SAND: Brown; fine to medium grained; ' dry and loose to 3 .0 feet; damp to moist and medium dense below; moisture increases with depth; becomes very moist at 8. 0 feet. (SM) 1 150 t J.N. 298-87 Page 43 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 103 Cont'd. BEDROCK - PAULA FORMATION 1 9. 0 - 12 .0 + GRAVELLY SANDSTONE: Light red-brown; fine to coarse grained; slightly silty; trace of clay; ' 10 to 15 percent gravel and cobbles with sizes to 10 inches; moist and dense. ' Slight Caving No Groundwater Encountered 10/6/88 t104 ALLUVIUM 0. 0 - 7.0 SILTY SAND: Brown; fine to medium grained; t dry; loose to 2 . 0 feet; medium dense and porous below. (SM) ' 7. 0 - 15. 0 SILTY SAND: Brown; fine to medium grained; slightly clayey; moist and medium dense; less porosity than above. (SM) ' BEDROCK - PAUBA FORMATION 15. 0 - 17. 0 + SAND: Light red-brown; fine to coarse ' grained; slightly clayey; some gravel; moist and dense. No Caving No Groundwater Encountered 10/6/88 ' 105 ALLUVIUM 0. 0 - 5. 0 SILTY SAND: Brown; fine to medium grained; ' dry to damp; loose to medium dense and porous. (SM) 1 t /51 ' • J.N. 298-87 Page 44 1 TABLE I ' LOG OF TEST PITS ITest Pit Depth Number ( ft. ) Description ' 105 Cont'd. 5. 0 - 14. 0 SILTY SAND: Brown; fine to medium grained; ' slightly clayey; moist and medium dense; some gravel and small cobbles below 10 . 0 feet. ( SM) ' BEDROCK - PAUBA FORMATION 14 . 0 - 18 . 0 + GRAVELLY SANDSTONE: Light brown; fine to t coarse grained; trace of clay; slightly silty; 10 to 15 percent gravel; occasional small cobbles; moist and dense. ' No Caving No Groundwater Encountered 10/6/88 106 ALLUVIUM t 0 . 0 - 4. 0 SILTY SAND; Brown; fine to medium grained; dry and loose. ' 4 . 0 - 10.0 SILTY SAND: Light red-brown; fine to coarse grained; scattered gravel and small cobbles; dry and medium dense to about 7 . 0 feet; ' becomes moist and dense below. (SM) BEDROCK - PAUBA FORMATION 10. 0 - 12. 0 + SILTY SANDSTONE: White; fine to medium grained; moist and dense. ' No Caving No Groundwater Encountered 10/7/88 1 1 ' t51 ' J.N. 298-87 Page 45 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 107 ALLUVIUM 0. 0 - 3 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose. ( SM) BEDROCK - PAUBA FORMATION ' 3 . 0 - 6. 0 + GRAVELLY SILTY SANDSTONE: Brown; fine to coarse grained; 15 to 20 percent gravel and small cobbles; damp; medium dense to 4 . 0 feet; dense below. No Caving No Groundwater Encountered 10/7/88 108 ALLUVIUM 0 . 0 - 5 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose to 2 . 0 feet; slightly damp and ' medium dense below; porous. (SM) BEDROCK - PAUBA FORMATION t 5. 0 - 9.0 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; trace of clay; scattered gravel; damp to moist and dense. No Caving No Groundwater Encountered 10/7/88 109 ALLUVIUM 0 . 0 - 16 . 0 + SILTY SAND: Dark brown; fine to medium grained; dry and loose to 2. 0 feet; moist and medium dense below; porous ; decreased porosity below about 9 . 0 feet. (SM) Caving to 7 . 0 feet No Groundwater Encountered 10/7/88 15 3 1 ' J.N. 298-87 Page 46 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 110 ALLUVIUM ' 0. 0 - 16 . 0 + SILTY SAND: Dark brown; fine to medium grained; dry and loose to 2.0 feet; damp and medium dense and porous to about 10 feet; moist with decreased porosity below. (SM) ' No Caving No Groundwater Encountered 10/7/88 111 0. 0 - 6 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose. ( SM) BEDROCK - PAUBA FORMATION 6 . 0 - 10 . 0 + SANDSTONE: Light red-brown; fine to coarse grained; slightly silty; some gravel; occasional cobbles; damp and dense. ' No Caving No Groundwater Encountered 10/7/88 112 ALLUVIUM 0. 0 - 5 . 0 SILTY SAND: Brown; fine to medium grained; dry and loose. (SM) BEDROCK - PAUBA FORMATION 5 . 0 - 8. 0 + SILTY SANDSTONE: Light red-brown; fine to coarse grained; slightly clayey; some gravel and small cobbles; damp and dense. No Caving No Groundwater Encountered 10/7/88 • isy i ' J.N. 298-87 Page 47 1 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 113 RESIDUAL SOIL 0. 0 - 4. 0 SILTY SAND: Brown; fine to medium grained; ' dry and loose. (SM) BEDROCK - PAUBA FORMATION ' 4. 0 - 9. 0 + - - SILTY SANDSTONE: Light red-brown; fine to medium grained; slightly clayey; some gravel; ' moist and dense. No Caving No Groundwater Encountered 10/7/88 I 114 ALLUVIUM 0. 0 - 3 . 5 SILTY SAND: Brown; fine to medium grained; dry and loose. (SM) 3 . 5 - 7. 0 SILTY SAND: Brown; fine to coarse grained; slightly clayey; some gravel; moist and medium dense to dense. (SM) BEDROCK - PAUBA FORMATION ' 7. 0 - 10 . 0 + SANDSTONE: Light red-brown; fine to coarse grained; slightly clayey; moist and dense. No Caving No Groundwater Encountered 10/7/88 115 ALLUVIUM 0. 0 - 2. 5 SILTY SAND: Brown; fine to medium grained; dry and loose. ( SM) ISS ' J.N. 298-87 Page 48 1 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description I115 Cont'd. 2. 5 - 7 . 0 SILTY SAND: Brown; fine to medium grained; trace of clay; some gravel; moist and medium dense to dense. (SM) ' BEDROCK - PAUBA FORMATION 7 . 0 - 11. 0 + SANDSTONE: Light red-brown; fine to coarse grained; some gravel; trace of clay; moist and dense. No Caving No Groundwater Encountered 10/8/88 116 ALLUVIUM 0 . 0 - 1 . 5 SILTY SAND: Brown; fine to medium grained; dry and loose. (SM) 1. 5 - 5 . 0 SILTY SAND: Light red-brown; fine to medium grained; slightly clayey; moist and medium ' dense. (SM) BEDROCK - PAUBA FORMATION 5 . 0 - 8. 0 + SANDSTONE: Light red-brown; fine to coarse grained; clean; some gravel; moist and dense. ' (SW) No Caving No Groundwater Encountered 10/8/88 1 1 i J.N. 298-87 Page 49 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 117 ALLUVIUM 0 .0 - 9 . 0 SILTY SAND: Dark brown; sand fine to medium grained; gravel traces; moist; loose to medium dense to porous. (SM) BEDROCK - PAUBA FORMATION 9 . 0 - 14 . 0 + SILTY SANDSTONE: Light brown; sand ' fine to medium grained; moist to very moist; medium dense to dense. No Caving ' No Groundwater ' 118 RESIDUAL SOIL 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist loose to medium dense and porous. (SM) BEDROCK - PAUBA FORMATION ' 3 .0 - 5 . 0 CLAYEY SANDSTONE WITH GRAVEL: Light reddish-brown; sand fine to coarse grained; 20 to 25 percent gravel and small cobbles; moist and dense. 5. 0 - 7 . 0 + SILTY SANDSTONE: Light brown and light reddish-brown; sand fine to coarse grained; some gravel; moist; dense. ' No Caving No Groundwater 1 --7?' 0,923 /s J.N. 298-87 Page 50 TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 119 ALLUVIUM 0.0 - 7. 0 SILTY SAND: Dark brown to brown at ' depth; sand fine to medium grained; scattered gravel below 4. 5 feet; moist; loose to medium dense and porous. (SM) 7 .0 - 9. 0 GRAVELLY SILTY SAND: Brown; sand fine to medium grained; 25 to 30 percent gravel and cobbles ; moist; medium dense to dense. ( SM) BEDROCK - PAUBA FORMATION 9 . 0 - 11. 0 + SILTY SANDSTONE: Light brown; sand fine to coarse grained; trace of clayey fines; moist; dense. Caving to 7 . 0 feet No Groundwater ' 120 ALLUVIUM 0 . 0 - 4 . 0 SILTY SAND: Dark brown; sand fine to medium grained; 25 to 30 percent gravel and cobbles below 3 . 0 feet; gravel traces above; moist; loose to medium dense and porous. ( SM) BEDROCK - PAUBA FOUNDATION 4 . 0 - 6 . 0 + SILTY SANDSTONE: Light red-brown; sand fine grained; 40 percent silty fines; moist and dense. No Caving No Groundwater /5 8 ' J.N. 298-87 Page 51 TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 121 ALLUVIUM 0 .0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; some gravel; moist to very moist; loose to medium dense and porous. (SM) ' BEDROCK - PAUBA FORMATION 3 . 5 - 5. 0 + GRAVELLY CLAYEY SAND: Light brown; sand fine to coarse grained; 20 to 25 percent gravel and cobbles; moist; dense. ' No Caving No Groundwater 122 RESIDUAL SOIL 0 . 0 - 2. 0 SILTY SAND: Dark brown; sand fine to ' medium grained; some scattered gravel and small cobbles; moist and loose. (SM) • ' BEDROCK - PAUBA FORMATION 2.0 - 5 . 0 CLAYEY SANDSTONE: Light brown and light ' reddish-brown; sand fine to coarse grained; some gravel and small cobbles at contact with alluvium; very moist to moist depth; dense. 5. 0 - 6 . 5 + SILTY SANDSTONE: Olive brown; sand fine grained; 40 percent silty fines; thin interbeds of clayey silt; moist; very dense. No Caving No Groundwater / cc J.N. 298-87 Page 52 TABLE I ' LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 123 ALLUVIUM 0 . 0 - 4. 0 SILTY SAND: Brown; sand fine to medium ' grained; layer of gravel and cobbles at 3 . 0 to 4 . 0 feet; gravel traces above; moist; loose. ( SM) BEDROCK - PAUBA FORMATION 4 . 5 - 5 . 5 + CLAYEY SANDSTONE: Reddish-brown; sand fine to medium grained; damp and dense. No Caving ' No Groundwater 124 RESIDUAL SOIL 0 . 0 - 2 . 0 SILTY SAND: Brown; sand fine to medium grained; 15 to 25 percent gravel and frequent cobbles; moist; loose. (SM) BEDROCK - PAUBA FORMATION 2 . 0 - 4 . 0 + SILTY SANDSTONE: Light reddish-brown; ' sand fine grained; 40 percent silty fines; moist; dense. No Caving No Groundwater 125 ALLUVIUM • 0.0 - 4. 5 SILTY SAND: Brown; sand fine to medium grained; moist and loose. (SM) 4. 5 - 7 . 0 GRAVELLY SAND: Light brown; fine to coarse grained; 20 - 25 percent coarse gravel and small cobbles; moist; medium dense. (SW) � 1o0 J.N. 298-87 Page 53 • TABLE I ' LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 125 BEDROCK - PAUBA FORMATION 7. 0 - 9 . 0 + SANDSTONE: Light reddish-brown; fine ' to coarse grained; slightly silty; some gravel; moist; dense. ( SW) Caving to 4 . 5 feet No Groundwater 126 RESIDUAL SOIL 1 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose to medium dense. (SM) BEDROCK - PAUBA FORMATION 2 . 5 - 5 . 0 + SILTY SANDSTONE: Light brown; sand fine to medium grained; damp; very dense. No Caving No Groundwater ' 127 ALLUVIUM 0. 0 - 2 . 0 SILTY SAND: Brown; sand fine to medium grained; some gravel; moist; loose ( SM) 2. 0 - 4. 5 GRAVELLY SAND: Light reddish-brown; sand fine to coarse grained; some silty fines; 20 to 25 percent gravel and cobbles; moist; medium dense. ( SW) 1 1 1 J.N. 298-87 Page 54 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 127 4 . 5 - 6. 0 + CLAYEY SANDSTONE: Mottled light gray and reddish-brown; sand fine to coarse grained; same gravel; moist; dense. 128 ALLUVIUM ' 0. 0 - 3 . 5 GRAVELLY SILTY SAND: Brown to light brown; sand fine to coarse grained; 25 to 30 percent gravel and cobbles; ' moist; loose to medium dense. BEDROCK - PAUBA FORMATION ' 3 .5 - 6 . 0 + GRAVELLY CLAYEY SANDSTONE: Light reddish-brown; sand fine to coarse grained; 25 to 30 percent gravel; ' moist; dense. No Caving ' No Groundwater 129 ALLUVIUM ' 0 . 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose to medium dense and porous. (SM) OLDER ALLUVIUM 4 . 0 - 9 . 0 + SILTY SAND: Light reddish-brown; sand fine grained; damp; dense. (SM) No Caving No Groundwater 1 1 I J.N. 298-87 Page 55 TABLE I LOG OF. TEST PITS ' Test Pit Depth Number (ft. ) Description 130 RESIDUAL SOIL 0 . 0 - 2 . 5 SILTY SAND: Brown to 1 . 0 feet; light reddish-brown below; sand fine to medium grained; some small cobbles below 1. 5 feet; moist; loose medium ' dense. (SM) BEDROCK - PAUBA FORMATION 2 . 5 - 4 . 0 + SILTY SANDSTONE: Light reddish-brown; sand fine to coarse grained; trace of clay fines; moist; dense. No Caving No Groundwater 131 RESIDUAL SOIL 0. 0 - 2. 0 SILTY SAND: Dark brown; sand fine to ' medium grained; some scattered cobbles; very moist and loose. ( SM) ' BEDROCK - PAUBA FORMATION 2. 0 - 4 . 0 + CLAYEY SANDSTONE: Reddish-brown; sand grained; very moist to moist at depth; dense. No Caving No Groundwater 132 ALLUVIUM ' 0 . 0 - 1 . 5 GRAVELLY SAND: Brown; fine to coarse grained; 25 to 30 percent gravel and cobbles; moist and loose. 1/03 1 1 J.N. 298-87 Page 56 ' TABLE I • LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 131 1. 5 - 3 . 0 CLAYEY SAND: Brown; sand very fine to fine grained; lenses of fine Silty ' Sand; moist; medium dense. (SC) 3 . 0 - 5 . 0 SAND: Light brown; fine to medium grained; silty; damp; medium dense. ( SP - SM) BEDROCK - PAUBA FORMATION 5 . 0 - 8 . 0 + GRAVELLY SAND: Light brown; fine to coarse grained; 20 to 25 percent gravel; some small cobbles; damp; dense. (SW) No Caving No Groundwater ' 133 ALLUVIUM 0 . 0 - 4 .0 SILTY SAND: Light brown; sand fine to 1 medium grained; 15 to 20 percent silty fines; thin layers of fine to coarse sand; damp; loose to medium dense. (SM and SW) ' 4 . 0 - 7 . 0 CLAYEY SAND: Dark brown; sand fine to medium grained; very moist and medium dense. ( SC) ' 7 . 0 - 12 . 0 + SILTY SAND: Brown; sand fine grained; 35 percent silty fines; moist to very moist; medium dense . ( SM) No Caving No Groundwater 1 J.N. 298-87 ' Page 57 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 134 ALLUVIUM 0. 0 - 17 . 0 + SILTY SAND: Brown; sand fine to medium grained; some clayey fines; thin intermediate layers of light brown fine to medium sand; moist; loose in upper ' 2 . 0 feet; medium dense below. (SM/SC) No Caving No Groundwater 135 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 3 . 0 -5 . 0 + SANDY CLAY: Brown; sand fine grained; damp; very dense. (CL) No Caving No Groundwater ' 136 ALLUVIUM ' 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 2 . 5 - 7 . 0 SILTY SAND WITH SOME CLAY: Brown; sand fine grained; damp; dense; exhibits some porosity; at 4 . 0 feet becomes very dense. (SM/SC) No Caving No Groundwater • yea92ace /6,s 1 1 J.N. 298-87 Page 58 ' TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 137 ALLUVIUM 0.0 -2 . 5 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM ' 2. 5 - 4. 0 + SILTY SAND WITH SOME CLAY: Brown; sand fine grained; damp; dense to 3 . 0 feet; ' very dense below. ( SM/SC) No Caving No Groundwater 138 ALLUVIUM ' 0.0 - 6 . 0 SILTY SAND: Brown; sand fine to medium grained; moist and loose to 3 . 0 feet; damp and medium dense below. (SM) COLLUVIUM/OLDER ALLUVIUM 6 . 0 - 9. 0 CLAYEY SAND: Brown; sand fine to medium grained; moist; medium dense to dense. (Sc) ' BEDROCK - PAUBA FORMATION 9. 0 - 11. 0 + GRAVELLY CLAYEY SANDSTONE: Reddish- brown; sand fine to coarse grained; 25 to 30 percent gravel and cobbles; moist; dense to very dense. ' No Caving No Groundwater 1 114 I I J.N. 298-87 ' Page 59 TABLE I ILOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 139 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose. (SM) ICOLLUVIUM/OLDER ALLUVIUM 3 . 0 - 6 . 0 + SILTY SAND WITH SOME CLAY: Brown; sand I fine grained; damp; dense to very dense ( SM/SC) ' No Caving No Groundwater 140 ALLUVIUM I0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose (SM) ' COLLUVIUM/OLDER ALLUVIUM 3 .0 - 6 . 0 + SILTY SAND WITH CLAY: Brown; sand fine I grained; damp; dense to very dense. (SM-SC) ' No Caving No Groundwater 141 ALLUVIUM I 0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine to medium I grained; moist and loose. COLLUVIUM/OLDER ALLUVIUM I 3 . 0 - 10. 0 + SILTY SAND: Brown; sand fine grained; damp and medium dense with some porosity to 5. 0 feet; becomes moist . and medium dense with less porosity Ibelow. (SM) I I 1(4 ' J.N. 298-87 Page 60 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 141 No Caving No Groundwater 142 ALLUVIUM 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine to Imedium grained; moist; loose. ( SM) COLLUVIUM/OLDER ALLUVIUM 3 . 5 - 9. 5 + SILTY SAND: Brown; sand fine to medium grained; damp and medium dense with some porosity to 6. 0 feet; less porosity below; sandier with increases in depth. (SM) ' No Caving No Groundwater 143 ALLUVIUM 0. 0 - 2 . 5 SILTY SAND: Brown; sand fine to coarse grained; some gravel; moist; loose to ' medium dense. ( SM) BEDROCK - PAUBA FORMATION 2 . 5 - 4 . 5 + GRAVELLY CLAYEY SANDSTONE: Brown and reddish- brown; sand fine to coarse grained; 25 to 30 percent gravel and cobbles; moist and dense. No Caving No Groundwater ' !(cg ' J.N. 298-87 Page 61 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' ALLUVIUM 144 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 2 . 5 - 8. 0 + SILTY SAND WITH SOME CLAY: Brown; sand fine grained; damp and medium dense with some porosity to 4. 5 feet; becomes dense below; moist and coarser grained at 6 . 0 feet. (SM/SC) No Caving ' No Groundwater 145 ALLUVIUM ' 0. 0 - 2 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 2 . 5 -6 . 0 + SILTY SAND: Brown; sand fine grained; ' trace of clay; damp; medium dense with some porosity to 4. 0 feet; becomes dense below; moist at 5.0 feet. (SM) ' No Caving No Groundwater 1 1 ' / ,9 I IJ.N. 298-87 Page 62 ' TABLE I ILOG OF TEST PITS I Test Pit Depth Number ( ft. ) Description I146 ALLUVIUM . 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist and loose. (SM) ICOLLUVIUM/OLDER ALLUVIUM ' 3 . 0 - 7. 0 + SILTY SAND: Brown; sand fine grained; trace of clay; damp; medium dense with some porosity to 5. 0 feet; becomes Idense to very dense below. (SM/SC) No Caving No Groundwater I147 ALLUVIUM I 0 . 0 - 2 . 5 . SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM I 2 . 5 - 6 . 0 SILTY SAND: Brown; sand fine grained; trace of clay; moist; medium dense to 1 about 4.0 feet; becomes dense below. (SM/SC) I 6.0 - 9 . 0 CLAYEY SAND: Light reddish-brown; sand fine to medium grained; moist; dense. (SC) INo Caving No Groundwater I I I / 20 1 ' J.N. 298-87 Page 63 ' TABLE I ' LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 148 ALLUVIUM 0.0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 3 . 0 - 6 . 0 + CLAYEY SAND: Light reddish-brown; sand ' fine to medium grained; very moist to moist; dense. ( SC) No Caving No Groundwater 149 ALLUVIUM t0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 3 .0 - 8. 0 SILTY SAND WITH SOME CLAY: Light reddish-brown; sand fine to medium grained; moist; dense. (SM/SC) ' 8 . 0 - 10. 0 + SILTY SAND: Light reddish-brown; sand fine grained; moist; dense. (SM) No Caving No Groundwater 1 I /7/ J.N. 298-87 Page 64 1 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 150 ALLUVIUM 0. 0 - 2. 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose (SM) COLLUVIUM/OLDER ALLUVIUM I - 2. 5 - 5 . 0 SILTY SAND: Light reddish-brown; sand fine to medium grained; moist; dense. ' (SM) BEDROCK - PAUBA FORMATION 5. 0 - 7. 0 + GRAVELLY CLAYEY SAND: Reddish-brown; sand fine to coarse grained; 30 to 35 percent gravel and cobbles; moist; dense. No Caving No Groundwater 151 ALLUVIUM 1 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose (SM) ' COLLUVIUM/OLDER ALLUVIUM 2. 5 - 8 . 0 SILTY SAND: Light reddish-brown; sand fine to medium grained; some fine grained; damp to 5 . 0 feet; moist below; dense; scattered gravel and cobbles at 6. 0 to 8. 0 feet (SM) . 1 t7;- I IJ.N. 298-87 Page 65 TABLE I ' LOG OF TEST PITS I Test Pit Depth Number (ft. ) Description I 151 8. 0 - 11 . 0 + SAND: Light reddish-brown; fine to medium grained; silty; moist; dense. (SP/SM) I No Caving No Groundwater I152 ALLUVIUM I 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand time to medium grained; moist; loose. ( SM) COLLUVIUM/OLDER ALLUVIUM I2 . 5 - 4. 5 + CLAYEY SAND: Light reddish-brown; sand fine grained; damp; dense to very Idense. (SC) No Caving No Groundwater I 153 ALLUVIUM I 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ICOLLUVIUM/OLDER ALLUVIUM 3 . 5 - 5 . 0 + CLAYEY SAND: Light reddish-brown; sand fine grained; damp; dense to very Idense. (SC) No Caving No Groundwater 1 I —TeR 9 73 9 / 73 ' J.N. 298-87 Page 66 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 154 ALLUVIUM 0. 0 - 2. 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose to medium ' dense. (SM) COLLUVIUM/OLDER ALLUVIUM 2.5 - 5. 0 + CLAYEY SAND: Light reddish-brown; sand fine grained; damp; dense to very dense (SC) . No Caving No Groundwater 155 ALLUVIUM 0 . 0 - 2 . 5 SILTY SAND: Brown; sand fine to medium grained; moist; loose. ( SM) ' COLLUVIUM/OLDER ALLUVIUM 2 . 5 - 8. 0 + SILTY SAND WITH SOME CLAY: Reddish- brown; sand fine to medium grained; damp; dense; becomes moist at 6 . 0 feet. (SM/SC) No Caving No Groundwater . 1 ' J.N. 298-87 Page 67 TABLE I LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description ' 156 ALLUVIUM 0. 0 - 2 . 5 SILTY SAND: Brown; sand fine to medium ' grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 2. 5 - 7 . 0 GRAVELLY SILTY SAND: Reddish-brown; sand fine to medium grained; 20 to 25 percent gravel and cobbles; damp to ' moist and dense. (SM) 7. 0 - 9 . 0 + GRAVELLY SAND: Light brown; fine to coarse grained; slightly silty.; 20 to 25 percent gravel; moist; dense. ( SW) No Caving No Groundwater 157 ALLUVIUM 0 . 0 - 5 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose to medium dense. (SM) COLLUVIUM/OLDER ALLUVIUM 5 . 0 - 8. 0 CLAYEY SAND: Reddish-brown; sand fine to medium grained; moist to very moist; medium dense and dense. (SC) ' No Caving No Groundwater 1 1 '75 1 J.N. 298-87 Page 68 ' TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description 158 ALLUVIUM 0. 0 - 1 . 0 SILTY SAND: Brown; sand fine to medium ' grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 1 .0 - 3 . 5 CLAYEY SAND: Light reddish-brown; sand fine to coarse grained; very moist to moist; medium dense to dense. (SC) ' 3 . 5 - 7 . 0 SAND: Light gray and light reddish- brown; fine to coarse grained; clean; moist; dense. (SW) BEDROCK - PAUBA FORMATION 7 . 0 - 11. 0 + GRAVELLY SANDSTONE: Light reddish- brown; fine to very coarse grained; trace of clayey fines; 15 to 20 ' percent coarse gravel; moist to very moist; dense. No Caving No Groundwater 159 ALLUVIUM 0.0 - 1 . 5 SAND: Light reddish-brown; fine to medium grained; silty; dry; loose. (SP) 1 . 5 - 5. 0 SILTY SAND: Brown; sand fine to medium grained; intermediate layers of fine to medium Sand; moist to damp; medium dense and porous. r I I /7G 1 1 J.N. 298-87 Page 69 TABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description ' 159 COLLUVIUM/OLDER ALLUVIUM 5. 0 - 7 . 0 CLAYEY SAND: Light reddish-brown; sand ' fine to medium grained; some fine gravel BEDROCK - PAUBA FORMATION 7 . 0 - 9. 0 + GRAVELLY CLAYEY SANDSTONE: Light reddish-brown; sand fine to coarse grained; 20 to 25% gravel and cobbles; moist; very dense. No Caving No Groundwater 160 ALLUVIUM ' 0. 0 - 10. 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose to medium dense ' and porous . ( SM) BEDROCK - PAUBA FORMATION 10.0 - 12. 0 + GRAVELLY SANDSTONE: Light brown; fine to coarse grained; 15 to 25 percent gravel and cobbles; moist; dense ' No Caving No Groundwater 1 1 1 1 1 J.N. 298-87 Page 70 TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number (ft. ) Description ' 161 ALLUVIUM 0 . 0 - 4 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) 4. 0 - 13 . 0 SILTY SAND: Light brown; to reddish- brown; fine to medium grained; moist; ' medium dense; some fine gravel. ( SM) COLLUVIUM/OLDER ALLUVIUM 13 . 0 = 16. 0 CLAYEY SAND: Light reddish-brown; sand fine to coarse grained; some gravel; moist; medium dense to dense. ( SC) No Caving No Groundwater 162 ALLUVIUM ' 0 . 0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) 3 . 5 - 8 . 0 SILTY SAND: Light reddish-brown; sand fine grained; moist; medium dense. (SM) COLLUVIUM/OLDER ALLUVIUM 8 . 0 - 11 . 0 + GRAVELLY CLAYEY SAND: Light reddish- brown; sand fine to medium grained; 10 to 15 percent gravel to 9 .0 feet; gravel traces below; moist; medium dense to dense. ( SC) No Caving No Groundwater 1 /7 p U 1 J.N. 298-87 Page 71 TABLE I ' LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description 163 ALLUVIUM 0.0 - 4. 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. ' 4. 0 - 14. 0 + SILTY SAND: Light reddish-brown; sand fine to coarse; some fine gravel; trace of clayey fines; damp to moist; medium dense and porous; decreased porosity below 8.0 feet. (SM/SC) ' No Caving No Groundwater 164 ALLUVIUM 0. 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium ' grained; damp; loose. ( SM) 4. 0 - 12. 0 SILTY SAND: Light reddish-brown; sand fine to medium grained; damp; medium dense; and porous; becomes moist at about 8.0 feet; less porosity below 8 . 0 feet. (SM) Caving to 4 . 0 feet No Groundwater ' 165 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine to medium ' grained; damp; loose. ( SM) 1 1 ' i79 1 J.N. 298-87 Page 72 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 165 3 . 0 - 12 . 0 + SILTY SAND: Light reddish-brown; sand ' fine to medium grained; damp; medium dense and porous; less porosity below 7. 0 feet; becomes moist at about 10.0 ' feet. (SM) No Caving No Groundwater 166 - ALLUVIUM ' 0 . 0 - 2. 0 SANDY SILT: Brown; sand fine grained; nonplastic; damp; loose. (ML) ' 2 . 0 - 7 . 0 CLAYEY SILT: Dark gray to 4 . 0 feet; light gray below; low plasticity; damp; very porous to 4 . 0 feet; becomes firm with some porosity below; becomes ' medium stiff to hard at 5 . 0 feet; damp. (ML) ' 7. 0 - 10. 0 + GRAVELLY CLAYEY SAND: Brown; sand fine to medium grained; 15 percent gravel - decreases with depth; damp; medium dense to 8 . 0 feet; dense; damp. (SC)_ No Caving No Groundwater 167 ALLUVIUM ' 0 . 0 - 2. 5 SANDY SILT: Brown; sand fine grained; nonplastic; damp; loose. (ML) 1 1 /g0 1 ' J.N. 298-87 Page 73 ' TABLE I ' LOG OF TEST PITS Test Pit Depth ' Number ( ft. ) Description 167 2 . 5 - 6 . 0 CLAYEY SILT: Dark gray and very porous ' to 4. 0 feet; light gray and medium stiff to hard below; low plasticity; damp. (ML) ' 6. 0 - 9 .0 SAND: Light gray with red iron oxide staining; fine to medium grained; silty; damp; medium dense. (SP-SM) 9 . 0 - 12 . 0 CLAYEY SILT: Gray with red iron oxide staining; very moist to wet; firm; thin ' subordinate lenses of fine sand. (ML) No Caving No Groundwater 168 ALLUVIUM 1 0 . 0 - 3 . 0 SILTY SAND: Light brown; sand fine grained; damp; loose. ( SM) ' 3 .0 - 10. 0 + DAMP: Light gray; some red iron oxide staining; fine to medium grained; some silty fines; damp to moist at depth; medium dense; subordinate layers of brown fine Silty Sand. (SP-SM) Excessive Caving ' No Groundwater 169 SOIL/SLOPE WASH 0 . 0 - 9 . 0 SILTY SAND: Reddish-brown; sand fine to medium grained; moist loose to 4. 0 feet; becomes medium dense to dense ' below. ( SM) a1, -2) IS( tJ.N. 298-87 Page 74 ' TABLE I ' LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 169 BEDROCK - PAUBA FORMATION ' 9 . 0 - 11. 0 + SILTY SANDSTONE: Light reddish-brown; sand fine to medium grained; gravel traces; damp; dense. No Caving No Groundwater 1 - - 170 SOIL/SLOPE WASH - 0 . 0 - 9. 0 SILTY SAND: Reddish-brown; sand fine to medium grained; moist; loose to 4 .0 feet; becomes medium dense to dense below (SM) BEDROCK - PAUBA FORMATION 9.0 - 11 . 0 + SANDSTONE: Light reddish-brown; fine to coarse grained; silty; some fine gravel; very moist; dense. ' No Caving No Groundwater ' 171 SOIL/SLOPE WASH ' 0.0 - 9 . 0 SILTY SAND: Dark brown to 5. 0 feet; reddish-brown below; medium grained; moist; loose to 5. 0 feet; medium dense below. (SM) BEDROCK - PAUBA FORMATION 9 . 0 - 11. 0 + SANDSTONE: Light reddish-brown; fine to coarse grained; some gravel; slightly silty; very moist; dense. No Caving No Groundwater 1 J.N. 298-87 Page 75 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 172 ALLUVIUM 0 . 0 - 13 . 0 SILTY SAND: Brown to 4. 0 feet; reddish- brown below; sand fine to medium grained; moist; loose to 5. 0 feet; ' medium dense and porous below; less porosity at about 9 .0 feet. (SM) ' 13 . 0 - 15.0 + SAND: Light reddish-brown; fine to medium grained; silty; micaceous; moist; medium dense. (SP-SM) ' No Caving No Groundwater 173 ALLUVIUM 0 .0 - 4 . 0 SILTY SAND: Dark brown fine to medium ' grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 4. 0 - 8 . 0 SILTY SAND: Reddish-brown; sand fine to • medium grained; moist; medium dense to dense. (SM) ' 8 .0 - 11 . 0 + SILTY SAND WITH SOME CLAY: Light reddish-brown; sand fine to medium t grained; some gravel; very moist; dense. (SM/SC) No Caving No Groundwater 174 ALLUVIUM ' 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) 1 ' I83 i J.N. 298-87 Page 76 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 174 3 .0 - 8. 0 + SILTY SAND: Reddish-brown; sand fine to ' medium grained; damp; medium dense and porous; less porosity below about 6. 0 feet. (SM) t No Caving No Groundwater ' 175 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to tmedium grained; moist; loose. (SM) 3 . 0 - 11. 0 + SILTY SAND: Reddish-brown; sand fine to t medium grained; . damp; medium dense and porous ; less porosity at about 8. 0 feet; becomes moist at 9. 0 feet. (SM) ' No Caving No Groundwater ' 176 RESIDUAL SOIL 0. 0 - 2. 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) BEDROCK - PAUBA FORMATION t 2. 0 - 6 . 5 CLAYEY SANDSTONE: Mottled light reddish-brown and gray; sand fine to coarse grained; very moist; dense. ' 6 . 5 - 8 . 5 + GRAVELLY SANDSTONE: Light reddish- brown; fine to coarse grained; 10 to 15 percent gravel; very moist; dense. ' No Caving No Groundwater 1 1 ' J.N. 298-87 Page 77 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 177 ALLUVIUM ' 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) 3 .0 - 14. 0 + SILTY SAND: Reddish-brown; sand fine to ' medium grained; moist; medium dense and porous; less porosity below about 7 . 0 feet; some gravel and small cobbles ' below 12 . 0 feet. (SM) No Caving ' No Groundwater 178 ALLUVIUM ' 0 . 0 - 5. 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. ' 5 . 0 - 11 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; moist; medium dense and porous; less porosity below about 9. 0 feet. (SM) ' No Caving No Groundwater ' 179 ALLUVIUM 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to ' medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 3 . 0 - 10. 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; damp to moist; dense. (SM) ' No Caving No Groundwater 1 !85 1 J.N. 298-87 Page 78 1 TABLE I LOG OF TEST PITS Test Pit Depth 1 Number (ft. ) Description 180 ALLUVIUM 1 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) 1 COLLUVIUM/OLDER ALLUVIUM 3 . 5 - 8 . 0 SILTY SAND: Reddish-brown; sand fine to 1 medium grained; moist to very moist at depth; dense. (SM) BEDROCK - PAUBA FORMATION • 8 .0 11. 0 + GRAVELLY CLAYEY SANDSTONE: Reddish- brown; sand fine to coarse grained; 15 1 to 20 percent gravel; and cobble; very moist; dense. i No Caving No Groundwater 1 181 ALLUVIUM 0. 0 - 10 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; damp; loose to 3 . 0 ' feet; medium dense and porous below; less porosity below about 7 . 0 feet; becomes moist at about 8. 0 feet. (SM) 1 No Caving No Groundwater 1 182 ALLUVIUM 0.0 - 9 . 0 SILTY SAND: Reddish-brown; sand fine to 1 medium grained; damp; loose to 3 . 5 feet; medium dense and porous below; less porosity below about 6. 0 feet; ' becomes moist at about 7. 0 feet. (SM) No Caving No Groundwater � iso J.N. 298-87 Page 79 ' TABLE I LOG OF TEST PITS Test Pit Depth ' Number ( ft. ) Description 183 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 3 . 0 - 9. 0 SILTY SAND WITH SOME CLAY: Light reddish-brown; sand fine to medium grained; moist to very moist; dense. (SM-SC) No Caving No Groundwater 184 ALLUVIUM 0 . 0 - 8 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; moist; loose to 2. 5 feet; medium dense and porous below; less porosity at about 5. 0 feet. (SM) No Caving. No Groundwater ' 185 ALLUVIUM 0 . 0 - 5 . 5 SILTY SAND: Reddish-brown; sand fine to ' medium grained; moist; loose to 4.0 feet; medium dense and porous below. (SM) ' COLLUVIUM/OLDER ALLUVIUM 5. 5 - 8 . 0 + CLAYEY SAND: Reddish-brown; sand fine to medium grained; moist; dense. (SC) No Caving No Groundwater ' !87 1 J.N. 298-87 Page 80 ' TABLE I ' LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 186 0. 0 - 12. 0 + SILTY SAND: Dark brown to 5 . 0 feet; reddish-brown below; damp; loose to 5. 0 ' feet; medium dense and porous below; less porosity below about 8.0 feet. (SM) No Caving No Groundwater ' 187 ALLUVIUM 0 .0 - 9.0 + SILTY SAND: Dark brown to 4 . 0 feet; reddish-brown below; sand fine to medium grained; moist; loose to 4 . 0 feet; medium dense and porous below; less porosity below about 6 . 0 feet; ' becomes very moist at 5 . 0 feet. (SM) No Caving ' No Groundwater 188 ALLUVIUM 0. 0 - 3 .0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER COLLUVIUM 3 . 0 - 6. 0 + CLAYEY SAND: Brown; sandfineto medium ' grained; damp; medium dense to dense at 4. 0 feet. (SC) ' No Caving No Groundwater 189 ALLUVIUM 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) i • /B4 J.N. 298-87 Page 81 ' TABLE I LOG OF TEST PITS Test Pit Depth ' Number ( ft. ) Description 189 3 . 0 - 8 . 0 + SILTY SAND WITH SOME CLAY: Reddish- brown; sand fine to medium dense and porous to 6. 0 feet; less porosity below. (SM-SC) ' No Caving No Groundwater ' 190 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) 3 . 0 - 10 . 0 + SILTY SAND: Reddish-brown; sand fine to ' medium grained; trace of clayey fines; medium dense and porous; less porosity below about 7 . 0 feet. (SM) ' No Caving No Groundwater 191 ALLUVIUM 0 . 0 - 2. 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 2 .0 - 9. 0 + SILTY SAND WITH SOME CLAY: Brown; sand fine medium grained; damp and dense with some porosity to 4. 0 feet; dense and non-porous below; becomes moist at 5 . 0 feet. ( SM-SC) No Caving ' No Groundwater 192 RESIDUAL SOIL ' 0. 0 - 2 . 0 CLAYEY SAND: Reddish-brown; sand fine to medium grained; moist; loose-to medium dense. (SC) 1 trt ' J.N. 298-87 Page 82 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 192 BEDROCK - PAUBA FORMATION ' 2 . 0 - 5 . 0 + CLAYEY SANDSTONE: Light reddish brown; sand fine grained; damp to moist; very dense. ' No Caving No Groundwater 193 ALLUVIUM 0 . 0 - 10. 0 SILTY SAND: Brown; sand fine to medium ' grained; some scattered gravel; moist; loose to medium dense and porous. (SM) 10 . 0 - 12 . 0 SAND: Light brown; fine to medium ' grained; silty; lenses of gray fine Silty Sand; very moist; medium dense. (SP-SM) ' 12. 0 - 13 . 0 + SILTY SAND: Light gray; fine grained; very moist; medium dense to dense. (SM) Caving to 12. 0 feet No Groundwater ' 194 ALLUVIUM 0. 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium grained; some scattered gravel; moist; loose. (SM) 4. 0 - 8 . 0 + GRAVELLY SILTY SAND: Light brown; sand fine to coarse grained; 25 to 30 percent gravel and cobbles; dry to damp; medium dense and porous to about ' 6 . 0 feet; becomes dense below. ( SM) No Caving No Groundwater 1 1 Pio 1 1 J.N. 298-87 Page 83 ' TABLE I ' LOG OF TEST PITS Test Pit Depth ' Number (ft. ) Description 195 ALLUVIUM ' 0.0 - 7. 0 SILTY SAND: Brown; sand fine to medium grained; some scattered gravel; moist to 3 . 0 feet; damp below; loose to ' medium dense and porous. (SM) 7.0 - 14. 0 + SAND: Light reddish-brown; fine to medium grained; silty; damp; medium dense. (SP-SM) ' No Caving No Groundwater 196 ALLUVIUM 0 . 0 - 5. 0 SAND: Light reddish-brown; fine to coarse grained; intermediate lenses of ' fine to medium Silty Sand; damp; loose to medium dense. (SW/SM) BEDROCK - PAUBA FORMATION 5 . 0 - 8 . 0 + GRAVELLY SANDSTONE: Light reddish- brown; fine to coarse grained; some ' clay fines; 20 to 25 percent gravel and cobbles to 6. 5 feet; decreased gravel below; damp to moist; dense to very ' dense. • No Caving No Groundwater 1 1 1 J.N. 298-87 Page 84 ' TABLE I LOG OF TEST PITS Test Pit Depth ' Number (ft. ) Description 197 ALLUVIUM ' 0. 0 - 8 .0 + SILTY SAND: Brown; sand fine to medium grained; moist to 3 . 0 feet; damp below; loose to medium dense and porous to 6. 0 ' feet; less porosity below. (SM) Caving to 4. 0 feet No Groundwater 198 ALLUVIUM 1 0 . 0 - 4. 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. ( SM) ' BEDROCK - PAUBA FORMATION 4 . 0 - 5 . 5 + SILTY SANDSTONE: Yellow-brown; sand fine grained; damp; dense. No Caving No Groundwater 199 ALLUVIUM ' 0.0 - 5 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) ' 5. 5 - 11. 0 SILTY SAND: Light reddish-brown; sand fine to medium dense. (SM) ' Caving to 5 . 0 feet No Groundwater 1 19' 1 1 J.N. 298-87 Page 85 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 200 ALLUVIUM ' 0.0 - 3 . 5 SILTY SAND: Brown; sand fine grained; trace of clay fines; very moist; loose. (SM) ' BEDROCK - PAUBA FORMATION 3 . 5 - 6 . 0 + SANDSTONE: Light reddish-brown; fine to coarse grained; silty; trace of clay; some fine gravel; damp; dense to very dense. ' No Caving No Groundwater ' 201 ALLUVIUM 0 . 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) 4 . 0 - 8 . 0 SILTY SAND: Light brown; sand fine to medium grained; damp; medium dense and porous to about 6 . 0 feet; less porosity below. (SM) ' COLLUVIUM/OLDER ALLUVIUM 8. 0 - 12 . 0 + GRAVELLY CLAYEY SAND: Reddish-brown; sand fine to coarse grained; 10 to 15 percent gravel; damp to moist; dense. (SC) Caving to 4 . 0 feet No Groundwater 1 202 ALLUVIUM 0. 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) l93 J.N. 298-87 Page 86 ' TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description ' 202 4 . 0 - 10 . 0 SILTY SAND: Reddish-brown; sand fine to medium grained; moist; medium dense. ' (SM) 10 . 0 - 15 .0 + SAND: Light reddish-brown; fine to ' medium grained; very moist; medium dense to dense. (SP-SM) Caving to 4 . 0 feet ' No Groundwater 203 ALLUVIUM ' 0. 0 - 3 . 5 SILTY SAND: Brown; sand fine to medium grained; moist; loose. 3 . 5 - 12. 0 SILTY SAND: Light reddish-brown; sand fine to medium grained; some fine gravel; dry to damp; medium dense and ' porous to about 7 . 0 feet; less porosity below. (SM) BEDROCK - PAUBA FORMATION 12 . 0 - 14 . 0 + SANDSTONE: Light reddish-brown; fine to coarse grained; silty; trace of clay; some fine gravel; damp; dense to very dense. ' No Caving No Groundwater ' 204 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) 1 ' X94( 1 J.N. 298-87 Page 87 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 204 3 . 0 - 10 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; damp; medium dense and porous; less porosity below about 6 . 0 feet; becomes moist and dense at 9 . 0 feet. (SM) ' No Caving No Groundwater 205 ALLUVIUM 0. 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium ' grained; moist; loose; gravel and cobbles at 3 . 5 to 4 . 0 feet. (SM) BEDROCK - PAUBA FORMATION 4 . 0 - 6 . 0 + CLAYEY SANDSTONE: Light reddish-brown; sand fine grained; moist; dense to very dense. No Caving No Groundwater 206 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Reddish-brown; sand fine to medium grained; moist; loose . (SM) ' TERRACE DEPOSITS 3 . 0 - 6 . 0 SANDY CLAY: Reddish-brown; sand fine to medium grained; grades to clayey sand at depth; very moist; dense. (CL to SC) 6.0 - 7 . 0 + SILTY SAND: Reddish-brown; sand fine grained; some clay fines; moist; dense. ( SM-SC) ' No Caving No Groundwater � res I J.N. 298-87 Page 88 ITABLE I LOG OF TEST PITS ' Test Pit Depth Number ( ft. ) Description I207 ALLUVIUM ' 0 . 0 - 1. 5 SILTY SAND: Brown to light brown; sand fine to medium grained; moist; loose. ( SM) I 1 . 5 - 5 . 5 SAND: Light brown; fine to medium grained; some silty fines; damp; loose. ( SP-SM) ITERRACE DEPOSITS I 5 . 5 - 7 . 0 + CLAYEY SAND: Reddish-brown; sand fine to medium grained; moist; dense. (SC) Caving to 5 . 5 feet I No Groundwater 208 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' 3 . 0 - 10 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; moist; medium dense and porous to about 5. 0 feet; less porosity ' and increased moisture below. (SM) No Caving INo Groundwater 209 ALLUVIUM ' 0.0 - 3 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) I 3 . 0 - 8. 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; damp; medium dense and porous to about 5 . 5 feet; less porosity Iand dense below. ( SM) No Caving ' No Groundwater I 1947 1 ' J.N. 298-87 Page 89 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 210 ALLUVIUM 0 . 0 - 2. 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) ' 2 . 0 - 9. 0 SAND: Light gray; fine to coarse grained; some silty fines; inter- mediate layers of fine silty sand; ' damp; loose. (SW-SM) 9 . 0 - 12 . 0 + - SAND: Light brown; fine to medium ' grained; silty; moist; medium dense. ( SP-SM) Excessive Caving to 9 . 0 feet No Groundwater 211 ALLUVIUM 0 . 0 - 1. 5 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) 1 . 5 - 6 . 0 SAND: Light gray and light brown; fine coarse grained; intermediate lenses of fine Silty Sand; damp; loose to medium dense. (SW and SM) 6. 0 - 10. 0 + SILTY SAND: Brown; sand fine grained; trace of clay fines; very moist; medium dense. (SM) Excessive Caving to 6 . 0 feet No Groundwater 212 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine grained; damp; loose to medium dense. ( SM) 3 . 0 - 9 . 0 SAND: Light brown; fine to medium grained; silty; damp; medium dense. ' ( SP-SM) `TR Si e) S 4 1 ' J.N. 298-87 Page 90 1 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 212 9. 0 - 11. 0 + SILTY SAND: Brown; sand very fine to fine grained; trace of clay fines; very ' moist; medium dense. ( SM) Some Caving to 9. 0 feet ' No Groundwater 213 ALLUVIUM ' 0 . 0 - 4 . 0 SILTY SAND: Dark brown; sand fine to medium grained; very moist; loose. ( SM) ' 4. 0 - 12. 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; very moist; medium dense and porous; less porosity below about 6. 0 feet. (SM) ' Caving to 4 . 0 feet No Groundwater ' 214 ALLUVIUM ' 0 . 0 - 17 . 0 + SILTY SAND: Light brown; sand fine to • medium grained; damp; loose to 3 . 5 feet. medium dense and porous below; less porosity below about 7 . 0 feet; ' moist at 9. 0 feet. (SM) No Caving ' No Groundwater 215 ALLUVIUM (Bottom of Erosion Gully) 0. 0 - 2. 0 SILTY SAND: Light brown; sand fine to medium grained; damp; loose. (SM) ' 2 . 0 - 10 . 0 + SAND: Light brown; fine to coarse grained; intermediate lenses of fine to medium Silty Sand; damp to moist; loose ' to medium dense. (SW) Excessive Caving (Prevented Further Excav No Groundwater 9I 1 1 J.N. 298-87 ' Page I 91 LOG OF TEST PITS Test Pit Depth ' Number (ft. ) Description 216 ALLUVIUM 0. 0 - 9 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose to 4. 0 feet; medium dense and porous below; less porosity below about 6. 0 feet. ( SM) I • 9 . 0 - 12. 0 + SILTY SAND: Reddish-brown; fine to medium grained; trace of clay fines; moist; medium dense. (SM/SC) 1 No Caving No Groundwater ' 217 ALLUVIUM 0 . 0 - 3 . 0 SILTY SAND: Dark reddish-brown; sand ' fine grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM ' 3 . 0 - 4 . 5 + CLAYEY SAND: Reddish-brown; sand fine to medium grained; damp; very dense; difficult to excavate. (SC) ' No Caving No Groundwater 218 ALLUVIUM t 0 . 0 - 2 . 5 SILTY SAND: Dark brown; sand fine grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM ' 2. 5 - 5. 0 + CLAYEY SAND: Reddish-brown; sand fine to medium grained; damp ; very dense; tdifficult to excavate. (SC) No Caving No Groundwater 94 J.N. 298-87 Page 92 TABLE I ' LOG OF TEST PITS Test Pit Depth ' Number (ft. ) Description 219 ALLUVIUM ' 0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 3 .0 - 11. 0 + SILTY SAND: Light reddish-brown; sand ' fine to medium grained; trace of clay fines; dry to 5 . 0 feet; damp below; medium dense and slightly porous to ' about 6 . 0 feet; dense below. (SW) No Caving No Groundwater ' 220 ALLUVIUM 0. 0 - 2 . 5 SILTY SAND: Brown; sand fine grained; moist; loose. (SM) ' 2. 5 - 3 . 5 CLAYEY SAND: Reddish-brown; sand fine medium grained; very moist; medium dense. (SC) ' BEDROCK - PAUBA FORMATION 3 . 5 - 5. 0 + SILTY SANDSTONE: Reddish-brown; fine to coarse grained; some gravel; slightly clayey; damp;. very dense. No Caving No Groundwater 221 ALLUVIUM ' 0. 0 - 3 . 0 SILTY SAND: Dark brown; sand fine grained; moist; loose. (SM) 1 20 0 1 J.N. 298-87 Page 93 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 221 COLLUVIUM/OLDER ALLUVIUM ' 3 . 0 - 7 . 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; trace of clay ' fines; gravelly - 15 to 20 percent coarse gravel; dry to damp; medium dense and porous to about 5 . 0 feet; become dense and difficult to excavate below. (SM) No Caving ' No Groundwater 222 ALLUVIUM 0 . 0 - 2 . 0 SILTY SAND: Dark reddish-brown; sand fine to medium grained; moist to very moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM 2. 0 - 7 . 0 CLAYEY SAND: Reddish-brown; sand fine to medium grained; very moist; medium dense to 5 . 0 feet; dense below. (SC) ' BEDROCK - PAUBA FORMATION 7 . 0 - 10. 0 + SILTY SANDSTONE: Reddish-brown; fine to ' coarse grained; slightly clayey; gravelly; very moist; dense. No Caving No Groundwater 223 SOIL 0. 0 - 1 . 5 SILTY SAND: Dark reddish-brown; sand fine to medium grained; some gravel and cobbles; moist; loose . (SM) clef I J.N. 298-87 Page 94 I • TABLE I LOG OF TEST PITS 1 Test Pit Depth Number ( ft. ) Description I223 COLLUVIUM I 1 . 5 - 3 . 5 CLAYEY SAND: Reddish-brown; sand fine to coarse grained; some gravel; very moist; medium dense to dense. (SC) IBEDROCK - PAUBA FORMATION 3 . 5 - 5. 0 + GRAVELLY SILTY SANDSTONE: Light brown; I . fine to coarse grained; moist; dense to very dense. I No Caving No Groundwater 224 ALLUVIUM I0 . 0 - 3 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. ICOLLUVIUM/OLDER ALLUVIUM 3 . 0 - 8 . 0 + CLAYEY SAND: Reddish-brown; sand fine Ito medium grained; dry; medium dense and porous to about 4.0 feet; becomes damp and dense below. (SC) INo Caving No Groundwater I225 ALLUVIUM 0 . 0 - 4 . 0 SILTY SAND: Dark brown; sand fine to Imedium grained; moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM I4 . 0 - 10 . 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; some clay Ifines; moist; dense. (SM/SC) No Caving No Groundwater I dot P4C/F/C SO/LS ENG/NEER/NG, INC. LOG OF BORING No. 1 - DATE 04SERVED 6/29/87 METHOD OF DR/LL/NG Hollowstem Auger LOGGED BY TCS GROUND ELEVAT/ON WORK ORDER Na. 900103 ' 3 • v Q N y \ J N a F a a ° Description and Remarks c ° ' 0 V o o\ GC ARTIFICIAL FILL (Qaf) : Gravelly clayey sand, medium brown, dry, dense SM ALLUVIUM (Qal) ; Silty sand, dark brown, moist, medium dense 5 SPT 5 @5. 0 ft. brown • _10 SP^ SM Very silty sand, brown, moist, medium . dense, porous, occasional white precipitate _15 _ SP^ 9 SC - Clayey sand, brown/light brown, moist, loose to medium dense ---- ---- -20 .4---- SP^ 5 ML Clayey silt, olive, moist, firm i - 25 ' continued on next page PLATE a -1 X03 i J.N. 298-87 Page 95 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 226 ALLUVIUM ' 0 . 0 - 4 . 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 4 . 0 - 7 . 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; some clay ' fines; moist dense. (SM) No Caving ' No Groundwater 227 ALLUVIUM ' 0. 0 _ 4. 0 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) COLLUVIUM/OLDER ALLUVIUM 4 . 0 - 8. 0 + SILTY SAND: Light reddish-brown; sand ' fine to medium grained; some clay fines; moist; dense. (SM) No Caving No Groundwater 228 ALLUVIUM ' 0 . 0 - 4 . 0 SILTY SAND: Brown; sand fine to medium grained; subordinate lenses of coarse ' Sand; dry to damp; loose. (SM) 4 . 0 - 10 . 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; damp; medium dense and porous to about 8. 0 feet; becomes moist below with less porosity. (SM) No Caving No Groundwater ao4f J.N. 298-87 Page 96 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description 229 ALLUVIUM ' 0 . 0 - 3 . 5 SILTY SAND: Reddish-brown; sand fine to medium grained; damp; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 3 . 5 - 5. 0 GRAVELLY SILTY SAND: Light reddish- brown; sand fine to coarse grained; ' dry; medium dense and porous. ( SM) BEDROCK - PAUBA FORMATION ' 5 . 0 - 8 . 0 + GRAVELLY SANDSTONE: Light reddish- brown; fine to coarse grained; some clay fines; damp; dense to very dense. No Caving No Groundwater 230 ALLUVIUM 0 . 0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) 3 . 5 - 9. 0 SILTY SAND: Light reddish-brown; sand fine to medium grained; trace of clay fines; some gravel; dry; medium dense and porous to about 6. 5 feet; becomes damp with less porosity below. ( SM) BEDROCK - PAUBA FORMATION ' 9 . 0 - 11. 0 + SILTY SANDSTONE: Light reddish-brown; fine to medium grained; trace of clay fines; damp; dense. ' No Caving No Groundwater 1 —77—R g ()1 Ljk 0705 I J.N. 298-87 Page 97 ITABLE I LOG OF TEST PITS ' Test Pit Depth ^ Number ( ft. ) Description I231 ALLUVIUM I 0. 0 - 7 . 0 SILTY SAND: Brown; sand fine to medium grained; moist; loose. (SM) 7 . 0 - 16. 0 + SILTY SAND: Reddish-brown; sand fine I to medium grained; some gravel; frequent cobbles and some boulders below 12. 0 feet; to very moist; Islightly to medium dense. ( SM) Excessive Caving INo Groundwater 232 ALLUVIUM (Bottom of Drainage Swale) I 0 . 0 - 8 . 0 SAND: Light brown; fine to coarse grained; slightly silty; damp; medium dense. (SW) IBEDROCK - PAUBA FORMATION I 8.0 - 9. 0 + CLAYEY SANDSTONE WITH COBBLES: Light reddish-brown; fine to coarse grained; very moist; dense. I Excessive Caving No Groundwater I233 ALLUVIUM 0 . 0 - 12 . 0 + SILTY SAND: Light brown and gray; sand I fine grained; damp; loose to 5. 0 feet; medium dense below; subordinate lenses of light gray fine Sand. (SM) I Excessive Caving No Groundwater I234 ALLUVIUM 0 . 0 - 6. 0 SILTY SAND: Brown; sand fine to.medium grained; moist; loose. (SM) 02060 J.N. 298-87 Page 98 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 234 6 . 0 - 12 . 0 SILTY SAND: Reddish-brown; sand fine to medium grained; moist; medium dense. ' (SM) Caving to 6. 0 feet ' No Groundwater 235 ALLUVIUM ' 0. 0 - 4. 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. (SM) ' COLLUVIUM/OLDER ALLUVIUM 4 . 5 - 9 . 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; trace of clay fines; damp; medium dense and porous to about 6.0 feet; becomes dense below. (SM) ' No Caving No Groundwater 236 SOIL 0.0 - 1. 5 SILTY SAND: Reddish-brown; sand fine ' grained; damp; loose. ( SM) 1 . 5 - 4 . 0 + CLAYEY SANDSTONE: Light reddish-brown; ' fine to coarse grained; some gravel; moist; dense. No Caving No Groundwater 237 ALLUVIUM 0 . 0 - 4. 0 SILTY SAND: Dark brown; sand fine to medium grained; damp to moist; loose. ' (SM) �o? 1 J.N. 298-87 Page 99 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 237 4 . 0 - 10. 0 + SILTY SAND: Reddish-brown; sand fine to medium grained; trace of clay fines; ' damp to moist; medium dense and porous to about 6. 0 feet; less porosity below. (SM) ' No Caving No Groundwater 238 ALLUVIUM 0. 0 - 3 . 5 SILTY SAND: Dark brown; sand fine to medium grained; moist; loose. ( SM) 3 . 5 - 10 .0 + SILTY SAND: Reddish-brown; sand fine to medium grained; trace of clay fines; damp; medium dense and porous to about 6 . 0 feet; less porosity below. (SM) ' No Caving No Groundwater ' 239 SOIL 0. 0 - 2. 0 SILTY SAND: Reddish-brown; sand fine to ' medium grained; some gravel; trace of clay; moist; loose. (SM) ' BEDROCK - PAUBA FORMATION 2 . 0 - 4. 0 + SILTY SANDSTONE: Light reddish-brown; fine to coarse grained; gravelly; some cobble and boulders; some clay fines; moist; dense. ' No Caving No Groundwater 1 ping 1 J.N. 298-87 Page 100 ' TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description ' 240 ALLUVIUM ' 0 . 0 - 4. 0 SILTY SAND: Dark brown; sand fine to medium grained; moist to wet; loose. (SM) BEDROCK - PAUBA FORMATION 4 . 0 - 5. 0 + SANDY CLAY: Reddish-brown; sand fine grained moist; stiff. (CL) No Caving ' No Groundwater 241 ALLUVIUM 0 . 0 - 5 . 0 SILTY SAND: Light brown; sand fine grained; damp; loose. ( SM) 5 . 0 - 8 . 0 + SAND: Light gray; fine to medium grained subordinate lenses of fine Silty Sand; damp; medium dense. (SP and ' SM) Some Caving No Groundwater ' 242 ALLUVIUM (Bottom of Swale) ' 0.0 - 2 . 0 SILTY SAND: Brown; sand fine grained; damp; loose. ( SM) COLLUVIUM/OLDER ALLUVIUM 2 . 0 - 5. 0 + CLAYEY SAND: Reddish-brown; sand fine to medium grained; damp; dense to very dense; slight porosity to 3 . 0 feet. ( SC) No Caving No Groundwater Jc9 J.N. 298-87 Page 101 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 243 ALLUVIUM (Bottom of Swale) ' 0 . 0 - 3 . 0 SILTY SAND: Dark brown; sand fine grained; very moist; loose. (SM) COLLUVIUM/OLDER ALLUVIUM ' 3 . 0 - 7 . 0 + CLAYEY SAND: Reddish-brown; sand fine grained; moist; dense. (SC) ' - No Caving - No Groundwater 244 ALLUVIUM 0. 0 -. 3 . 0 SILTY SAND: Dark brown; sand fine grained; very moist; loose. ( SM) COLLUVIUM/OLDER ALLUVIUM ' 3 . 0 - 7 . 0 + CLAYEY SAND: Light reddish-brown; sand fine grained; moist; dense. (SC) No Caving No Groundwater 245 SOIL 0. 0 - 1 . 5 SILTY SAND: Reddish-brown; sand fine ' grained; moist; loose to medium dense. COLLUVIUM/OLDER ALLUVIUM ' 1. 5 - 2 . 5 CLAYEY SAND: Light reddish-brown; sand fine grained; some gravel; moist; dense. (SC) ' 2 . 5 - 5. 0 + SILTY SAND: Light reddish-brown; sand fine to medium grained; trace of clay fines; dry; dense. ( SM) No Caving No Groundwater A/0 J.N. 298-87 Page 102 TABLE I LOG OF TEST PITS Test Pit Depth Number (ft. ) Description ' 246 ALLUVIUM ' 0 . 0 - 2 . 5 SILTY SAND: Dark reddish-brown; sand fine grained; moist; loose to medium dense. (SM) COLLUVIUM/OLDER ALLUVIUM 2. 5 - 6. 5 + CLAYEY SAND: Light reddish-brown; sand ' fine to medium grained; some fine gravel; damp; dense to very dense. (SC) ' No Caving No Groundwater 247 ALLUVIUM t0 .0 - 2. 0 SILTY SAND: Dark reddish-brown; sand fine grained; moist; loose to medium ' dense. (SM) COLLUVIUM/OLDER ALLUVIUM 2 . 0 - 5 . 0 + CLAYEY SAND: Reddish-brown; sand very fine to fine grained; moist; dense to very dense. (SC) ' No caving No Groundwater ' 248 ALLUVIUM (Bottom of 10 feet Deep Erosion Gully) 0. 0 - 4 . 0 + SILTY SAND: Light brown; sand fine to medium grained; trace of clay fines; damp and loose to medium dense in upper 2 . 0 + feet; becomes dry and dense to ' very dense below. (SM) No Caving No Groundwater • /.f1 1 J.N. 298-87 Page 103 TABLE I LOG OF TEST PITS Test Pit Depth Number ( ft. ) Description 1 249 ALLUVIUM (Bottom of 10 feet Deep Erosion Gully) 1 0. 0 - 4 . 0 SAND: Light brown; fine to medium grained; moist; loose to medium dense. (SW) COLLUVIUM/OLDER ALLUVIUM 4 . 0 - 6. 0 + SILTY SAND: Light reddish-brown; sand ' fine to medium grained; moist; dense to very dense. (SM) ' No Caving No Groundwater 1 1 1 1 1 1 1 1 1 1 eZ/.� I I ' APPENDIX B LOGS OF PREVIOUS BORINGS t 1 I 1 1 ala PAC/F/C SO/LS ENG/NEER/NG, INC. LOG OF BORING No. 1 cont. DATE OBSERVED 6129/87 METHOD OF DR/LL/NG Hollowstem Auger LOGGED BY TCS GROUND ELEVATION WORK ORDER No. 400103 O NPisDescription and Remarks _25 _ h m V J � o\° SP7 12 SM Silty sand, tan, moist to very moist, .' slightly micaceous, occasional tan sand lenses -30 ------ - LPT 20 SP/ Sand, medium to coarse grained, slightly SM silty, tan, slightly moist, medium dense 35 _ -40 - SP^ 26 SP _ 45 _ _ 50 continued on next page PACIFIC SO/LS ENG/NEER/NG, INC. LOG OF BORING No. 1 cont. DATE OBSERVED 6/29187 METHOD OF DR/LL/NG Hollowstem Auger LOGGED BY TCS GROUND ELEVATION WORK ORDER No. 400103 -0 • F 3 . ° Description and Remarks ° o 50 1 m v J o • SPT 29 SP/ @50. 0 ft. occasional gravel to 1/4" SM —55 60 _ SP1 34 SP/ SM TOTAL DEPTH 61. 0 ft. 111 No Water PLATED -1 eSic • I BORING LOG Low,' cQeoBy SWD °ai0'i'1 9-5-85 0-R'Mobile B-53H.S.A. Bof,ngDumeien 8" Boong Numoec 111 � OnCoPoona on fora ea/mg log apply Only at Ma,,Mi4 Doting bonbon and al the bine the bone no made.The Soong[VevaIron:Approx. 1154, BH—1 docr,Vl.on,on Mal Ore a/e net warranted lo be representative ot aubaunaca condition,at Other'racehorse Pt/..911. r of a w Y 5, o ; DESCRIPTION 5� ;3ig J a t§ e y 1 —\/ 15* TOPSOIL,Medium dense,dry,light brown,porous Silty SAND(SM) 4 90 ALLUVIUM(Qa1 ) II ' Loose,damp,brown Loose,damp,brown to brownish gray Silty fine 5 /� 5 SAND(SM) II -_ Becomes medium dense ' t0 —\/ 18* 5 106 CON.' — Becomes moist 11 i5 —>< 28 1 I. 20 v 19* 13 105 CONS — —1—Be I. 25 —>< 40 comes dense — Becomes very dense and grayish white 30 V 54* ' _ Bottom of boring at 30 feet.No groundwater.No caving. 35 1 _ 40 I45 _ ' I50 ' HAMMER WEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: I DROP: 30 inches J S2519 1 A-2 FYI Medal!, Worswick&Associates, Inc. LOS ANGELES Consurong Engineers&GeologistsI SANTA ANA SAN DIEGO int, , ' BORING LOG L oppep 0y Daie Dnoe p. Dnn H•q Bo�mp D•amner „ Boling Humor SWD 9-5-85 Mobile B-53H.S.A. 8 D..V•plM n.on this Damp'W.polyonly at'ha:Mt W't Donny 1«a•On c7 a m.nm.N.poling..a m.o..in. Bonny El. an onI , pnc.•opon.on,nn bga.not.anam.p me. toro.m a..a wpwmu conmpom aoma «anon.o.t.m.a Approx. 1204 BH-2 - g -( - " ':_ - s r r DESCRIPTION ,. a3 = o a u iso p II X 12 TOPSOIL,Stiff,dry to damp,brown to dark brown,porousI o — Sandy SILT(ML) with some rootlets 1' =` ALLUVIUM(Qal ) COMP 5_ 0 18* Medium dense,damp,light to grayish brown Silty 5 105 D5 SAND(SC) IF ,: to —u 8 fLoose,moist,dark brown Clayey fine SAND(SC) MA — 1 (49) ' is N/ 14* `„ SAND interbeds and trace of GRAVEL 9 108 CONS - 1 _ - _ _ —\/ 10 TGrades to coarse WA I. 20 — Y (36) II 25 \,/ 36* — . 30 18 11 — Bottom of boring at 30 feet. No groundwater. No caving. II 35 I _ . 40 - 45 50 • ' HAMMER WEIGHT: 140 lbs. PROJECT NO2 FIGURE NO.: ��', �� DROP: 30 inches S2519 A-3 _ll - Medal/, Worswick&Assoclatas,Inc. LOS ANGELES -)r. wh Consw„mg Enginen,s d Geoioq,sis SANTA ANA ■a-a1•J•1�iI SAN DIEGO !� d/9 111 BORING LOG logged B,'. SWD I bait Dolled 9_5-85 Dim"•g Boring a,meat Boring Number. Mobile B-53H.S.A, 8" D.scncn.ne on Nie bong log apply only at the.orulc Coring tocanon and et IN.time the poring.ea m.oe.the Boring Eteranon: Approx. 1220" BH-3 W aonotons on Ms/op.r.not...anted to B.replegnlana.of subsurface conddlone N ober location or Cme. 1 n ?.a. .,.. a .nr it a Si DESCRIPTION o= oti I —v 24* TOPSOIL,Medi m dense,dry,brown Silty SAND(SM) with some 'V o 0 NR rootlets. I — PAUBA FORMATION(Qp) 5 —X 92 Very dense,moist,light brown to grayish white, fine to .medium SAND with white oxides '' — \ / Becomes gravelly with trace of CLAY to �/ 60* 8 112 — COBBLES up to 6" ' Bottom of boring at 12 feet. No groundwater. No caving. is — I 20 - , ` — • 25 • 30 . — 35 • — 1400 1 — ' - I45 — I 1 — ' I50 . 1 HAMMER WEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: 11 I DROP: 30 inches. 52519 A-4 E_! - Medal?, Wwswickpcfa fes,Inc. LOS ANGELES I '1® Consulting Engineers&Geol&Assogists SANTA ANA SAN DIEGO Jig • • BORING LOG dCoreBt. SWD D.r Dolled. 9-5-85 °""R°Mobile B-53H.S.As Bong D,.mrl.rU BO/mg Number DUO.oLons on lbs bow.,log booty only al1M sMc.t6 boring location.nd al IM pm.0.0 poring..a m.Os.Tb Soong f 4Noon BH-4 dsc',oi o .on Inb lop an not sinful lo D.,ro,rarnuinr of subaunace conditions at other location Of Inn Approx. 1156' s a o ; DESCRIPTION or 3 i� . 0 1. ' —>C: 28 ALLUVIUM(Qa1 ) Medium dense,dry to damp,white gray to dark browr Siity fine SAND(SM) with some CLAY, some rootlets ' S_\/ 22* in top 6" 5 104 • — ' -1-Becomes loose and moist i0 >< 9 MA _ (22) • '' V is 70* 7.7. PAUBA FORMATION(Qp) 12 118 Very dense,light brown to gray,fine to coarse _ SANDI:\ - to_ II COME 20 7 87 . '. Becomes gravelly and grades to coarse 25 'A/ 96/ 711 • 30 1< 56 • I _ Bottom of boring at 30 feet. Groundwater encountered at 14 feet. No caving. 35 • 2. 40 ' 45 — . 11 50 HAMMER 'WEIGHT: 140 bs. 'PROJECT N9 'FIGURE NO.: ' DROP: 30 inches A � - Medafl, Woiswick&Associates,Inc. LOS ANGELES I Lus Consulting Engineers s Geolog.sts SANTA ANA SAN DIEGO 119 BORING LOG_ Ipp . toed BY SWD Dale Drilled: Drill Bp'. Boort)Diameter Diameter Bormg Numae 9-5-85 Mobile B-53H.S.A. 8" Descriptions o.Mit Donna lop apde on'',at It,.specific boring location and al P.Dm•Me awing reamade Th. Boring EIeHDon II - `..c.01 on.On hit log me not rartantea lo D.reps law•al subsrdac•conditions al other locations or omits Approx. 1180' - BH-5 De: rf a 1. 0: DESCRIPTION �s ;d tg 3 I — FILL,Medium dense,dry,light brown Silty SAND(SM) 0 0 -\/ 25* TOPSOIL,Medium dense,dry,dark brown,silty fine to coarse 3 108 ------\SAND(SM) I 5 —1>< 9 PAUBA FORMATION(Qp) _ Dense to very dense,damp to moist,brownish to I _ white gray,fine to medium SAND, with upper 3 to _ 4 feet weathered 10 V 44* 12 121 DS I — SW I . 15 56 • I ,-Fine contents decreases 20 V 66* 4 105 TGrades to coarse I25 —>< 67 J 11 30 \/ 51* I _ Bottom of boring at 30 feet. No groundwater. No caving. I 35 ~ I 40 I 45 — I 50 HAMMER 'WEIGHT: 140 lbs . PROJECT NO.: NO.: DROP 30 inches I S2519 'FIGURE A-6 I F.42 Medal!, WorswickIAssociates, Inc. LOS ANGELES I I ® consulting Engineers&Georog,srs SANTA ANA SAN DIEGO sa 0 ii BORING LOG Lopped Py. SWO Dale Drn:ea. Dr 'app Boring Diameter. Bonny number, 9-5-85 Mobile B-53H.S.A. 8u ID..cnbr.on on this bamp lop apply only at the specie boringnig location b at r g lime In.tor.nwas,mae. Ti.. BalmElevation Boling a.acr.ptron.on,n.alop.r.not.Slanted to ber.orea.ntatn.a.ubsurface condition.at erb.,locations or wee - Approxi 1180t BH-5 '. c _ - a a" ; DESCRIPTION o� Z_ am 1 2 au 0 0 _ FILL,Medium dense,dry,light brown Silty SAND(SM) --Ni 25* TOPSOIL,Medium dense,dry,dark brown,silty fine to coarse 3 108 ' \SAND(SM) 5 9 PAUBA FORMATION(Qp) Dense to very dense,damp to moist,brownish to — white gray,fine to medium SAND, with upper 3 to II _ 4 feet weathered ' 10 �/ 44* 12 121 DS SW IF 15 56 - V 66* ,Fine contents decreases 20 4 105 1. — _ TI-Grades to coarse II' 25 > 67 11. 30 V 51* I. J Bottom of boring at 30 feet. No groundwater. No caving. 1 II 35 1 _ 40 I I 45 ' 50 . . . HAMMER WEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: ' DROP: 30 inches S2519 A-6 44_,71 Mnsuait Worswick4eAssts fates'Inc. LOS ANGELES / /] I r1® Consuurng Eng,neeis d Georogsrs SANTA ANA �/��//� SAN DIEGO ` 7 (7y } BORING LOG I toed ey IDnoeo Deio R. Boring Diameter. Bowe Nomo... 1 SWD 9-5-85 Nobile B-53H.S.A. 8" ID..cnou.ona on..,e oiling log sooty only al the soKat boring location anal at the time the toeing a.s mac..The Boring Elevation:aloApprox. 1185' BH-6 I oi000nnos on b to .. Sol a,.not..nano eaa mm o to c.r.o, ..mn. oeaca coronion,SI WOO lo omcations or tin,.. 8 �e Y - a o �; DESCRIPTION si a $g I, —>< 52 PAUBA FORMATION 0 0 — Dense to very dense,dry to damp,brownish to — white gray, Silty fine to medium SAND alternating 1 5 ,\/ 48* with coarse SAND Becomes moist I , — to —>< 45 1 I• . 15 —'\/ 54* I. 20 X��// TBecomes gravelly 51 1 — 25 \/ 56* 10 106 DS I 30 /\ 50 . - 35 �/ 57* 1 . _ • • • 1 . a0 —x, 54 ' — Bottom of boring at 40 feet. No groundwater. No caving. 1 as ' . 50 HAMMER WEIGHT: 140 Tbs. PROJECT NO.: FIGURE NO.: • Imo', 7I DROP. 30 inches l 52519 I A-7 I . i.L- Medan, Worswiek&Associates,Inc. LOS ANGELES ' fi ® Consulting Ennrneers&Geologists SANTA ANA ' SAN DIEGO aa.1 • I BORING LOG logged BY Owe Onto Orill Rog: Boring D.ameter. Bonng RDmoar. SWD 9-6-85 Mobile B-53H.S.A. B" D..ars.on tnn Dorm::pg.DP:!omy w Ina aoKAC Upmg lotu.on and.I tna Dm.ma Doting s. mad..Ina Boring Eleralwn' 1 d cviotcns on IDO log n.nol-s".nl.d to e...wnenl.ln.of we.vrt.c.cond.l.ona a otn«loul:on,a l.... App rox. 1134 BH-7 I 8 YS. -u a! e a e 1= DESCRIPTION • "a sB aS o a I --\\!K. 19 ALLUVIUM(Qal ) ' Loose to medium dense,dry to moist,porous , dark grayish to yellowish brown,Clayey fine to coarse I . 5 - V 19* SAND(SC) to SAND(SP) 8 112 10 8 il ` / Becomes dense • ' is b/ 30* PO x 38 25 A/ 38* Trace of coarse SAND and Silty SAND interbeds 30 >< 36 1 -II \ / 35 %/ 38* -1-Becomes gravelly, COBBLES up to 12 " 40 50/ 5" I - Bottom of boring at 40 feet. No groundwater. No caving. ' as - I 50 HAMMER WEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: I DROP. 30 inches 52519 A-8 Irl 41-' Medall, Worswick&Associates,Inc. LOS ANGELES ' "� consu,Dng Engineers&Geologrsrs SANTA ANA SAN DIEGO at/3 ' BORING LOG 1pvgedar. SWD Dae Doting 9-6-85 °rr�"'oMobile B-53H.S.A. Bp„ng oumer.r. 8” Boring"omp.y. o.¢,otcn,On tri„boring tog apply only at ma.o.crtrc boring location and•i tha bom m.boring was med..in. Boring Erenation Approx. 1105' BH-8 maymbena on this tog a. u. not warranted to b.repemd n ab.. aubsu .c•cone,Yona n otos r«.tan, lent or in • II c n 3 - a ': ' a s i DESCRIPTION Sri a o +� a i 11 _ V 18* ALLUVIUM(Qal ) 10 121 Medium Dense,moist,dark brown Clayey fine to medium SAND(SC) to Silty SAND(SM) IIs 10 WA (39) II io — \/ 10* 12 117 CONS It 15 X 13 WA Trace of GRAVEL (31) ' -V 29* Hard,moist,dark grayish brown Clayey to Sandy 20 SILT(ML) with Silty fine SAND(SM) interbeds I . —_ 25 >< 68 30 ---N/ 72/ II _ 11" Bottom of boring at 30 feet. No groundwater. No caving. 35 — 40 iii 45 — 50 I HAMMER 'WEIGHT. 140 lbs. PROJECT NO.: FIGURE NO.: DnoP 30 inches I S2519 I A-9 11 _/.L Medal!, Worswick&Associates,Inc. LOS ANGELES �� Conswnng Eng,neers&Geologists SANTA ANA ISAN DIEGO c r BORING LOG l oggeg Br. SWD Dai.D .g: 9-6-85 Dr1a Rliobile b-53H.S.A. Boring Dom.Rr. 811 Boring Humour. J oco•ot•o. unmn bborinbqt-.00Otaol eo.e r.aooec.sd¢UOOmgd locuaeoaacnd.caol naR•.gLnma.moemboanbug_oani.mo.roY,maate Boring QI. anon App rox. 1138' BH-9 1 ri $ gs ;g g@ DESCRIPTION -- it - -1 V O a J _ X 25 ALLUVIUM(Qp) Medium dense to very dense,dark brown,dry to damp V Silty fine SAND(SM) with some rootlets in top 6" COM - 5 V 67* Root of 1/4" in diameter at 5' 4 115 1-Becomes olive i0 0. 49 l - _ i Lense of COBBLES 15 56* Becomes grayish brown 20 46 25 56* Clayey SILT(ML) interbeds 1 V 30 0 50/ I 5 Bottom of boring at 30 feet. Groundwater encountered at 29 feet. Nocaving. 35 I, 40 I 45 is 111 50 HAMMER l WEIGHT: 140 lbs. IPROJ 5251Q,; I FIG UqE N9.: 1DROP: 30 inchesII on" 9 H lU -i / ' Medal, Worswfck&Associates,Inc. LOS ANGELES LA Consulting Engineers&Geologists SANTA ANA SAN DIEGO OaS • BORING LOG I togged BY Dale Drulea. , Drat Rig' I Boring Diameter Bonny Number SWD 9-6-85 Mobile B-53H.S.A 8" D.Kr.abane an T..boring log cooly only.I me.o.ele:bonne KKa.on end CI the lime In.boring-ire man The BOr.ng[le.aIngs Approx. 1138' BH-10 a.,a.otroq on inn log a not—sienn a'0 be rep&&&&&*Oh*0'.vbaun.c.cone.fone at DIMr Ippbone Of bm.a • 1 1. : - S - a o ; DESCRIPTION Esc 38 G O ' 15* ALLUVIUM(Qal ) 5 102 — Loose to medium dense ,dry to moist,dark brown ' Silty SAND(SM) ,slightly porous 5 8 — 10 --\\„// 22* 11 118 li15 >< 13 Becomes dark yellowish brown and grades to MA fine to medium coarse (31 It 20 \! 27* Coarse SAND lamination 1 I25 >( 14 WA (20 II 30 V 41* Becomes gravelly and olive brown II = Bottom of boring at 30 feet. No groundwater. No caving. III 35 '' 40 1 — 45 — 50 HAMMER WEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: li ��,T�^71 DROP: 30 inches 52519 A-11 —L1 - Medall, e Worswick&Acso latssInc. LOS ANGELES . �ConsulDng Engineers&Geologrsts SANTA ANA SAN DIEGO a we •*le '' BORING LOG toupee)By oa:e Dimee) Dnp Pp Boring onmetrr. SWD 9-6-85 Mobile b-53H.S.A• 8.1 Boring Numoar. io..VF4on.On:: .p lop.001,Onq at in..pec IC pump location and.1 the)4m.ro ponnp tea.ma0t Tne Boring Elevation:Approx. 1327' BH-11 O.W,pipns on rnn p and .aYameo to pa reo,e>anin+.d.up.u.taca conditions n inn..lopppns w times I. n ` 2. _ e; DESCRIPTION la o O J iy 6 I. _ X 80 TERRACE DEPOSIT(Qt) P o Very dense,dry to damp,pink to reddish brown — Silty SAND(SM) with GRAVEL,trace of CLAY and I — white oxides 5 V 50/ — 6" I — Becomes moist with COBBLES '. io •- - PAUBA FORMATION(Qp) '. 15 -2>< 74 Very dense,moist,light brown to grayish brown Silty SAND(SM) alternating with SAND(SP) ' Becomes olive gray and gravelly 20 —V86* i. Hard,moist,olive to olive brown SILT(ML) 25 —>< 48 —V 84/ 30 11" I. __ Very dense,moist.white to light gray SAND(SP) • 35 81/11.5" ao 50/ 5:5" Bottom of boring at 40 feet. No groundwater. No caving. 45 I 50 — HAMMER WEIGHT: 140 lbs. PROJECT NO; FIGURE NO.: DROP: 30 inches S2519 A-12 1 rn I _J_I , Medall, Worswick&Associates,Inc. LOS ANGELES ■ LAII Consulting Engineers&Geologists SANTA ANA SAN DIEGO c2, I BORING LOG Logged Br SWD DateDotted 9-685 Dnp"' Boring Diameter 8 O" Doting Number Mobile B-53H.S.A. I Ddc.c.ccrr.pplrprm°loborng togor.My aOnly oboe1eplacet 1poM ga ,sw ,cd.onme rmcr.oe ripona7.4:::"..17.::: Boring E'eo. Approx. 1221' BH-12 11 n 4 i. ¢e a n • a < d; DESCRIPTION sr s I —><, 15 ALLUVIUM(Qal ) Stiff,dry,grayish brown Sandy SILT(ML) I Medium dense,dry to moist,dark brown to grayish s —N/ 25* brown Silty SAND(SM) , some rootlets in top 7 feet 4 100 I ~�/ Grades to medium coarse 10 >\ 15 W MA II _ (26) / Becomes light olive brown II is / 25* 8 105 CONS ', — V (( Lense of COBBLES 20 7X 13 -1—Becomes wet • I 25 —\\/// 31* Hard,olive brown Clayey SILT(ML) ,trace of fine SAND(SP) ' 30 37 I I 35 34* Very dense,light brown,fine to medium SAND(SP) , trace of GRAVEL II 140 86/ go Bottom of boring at 40 feet. Groundwater encountered at III 181/2 feet. No caving. 1 145 ' Iso HAMMERWEIGHT: 140 lbs. PROJECT NO.: FIGURE NO.: DROP: 30 inches 52519 A-13 I rrl „ ' Medal!,Worswlek&A csorlates,Inc. LOS ANGELES ' ' AA Consulting Engineers&Geologists SANTA ANA SAN DIEGO Pc) S 1 I I I APPENDIX C STANDARD GRADING SPECIFICATIONS • 1 v23 4, 9 I 1 I STANDARD GRADING SPECIFICATIONS ' These specifications present the usual and minimum requirements for grading- operations performed under the control of Petra Geotechnical , Inc. No deviation from these specifications will be allowed, except where specifi- cally superseded in the preliminary geology and soils report, or in other written communication signed by the Soils Engineer or Engineering Geologist. I. GENERAL ' A. The Soils Engineer and Engineering Geologist are the Owner's or Builder' s representative on the Project. For the purpose of these specifications , supervision by the Soils Engineer includes that inspection performed by any person or persons employed by, and responsible to, the licensed Civil Engineer signing the soils report. B. All clearing, site preparation, or earthwork performed on the project shall be conducted by the Contractor under the supervision of the Soils Engineer. ' C. It is the Contractor' s responsibility to prepare the ground surface to receive the fills to the satisfaction of the Soils Engineer and to place, spread, mix, water, and compact the fill in accordance with ' the specifications of the Soils Engineer. The Contractor shall also remove all material considered unsatisfactory by the Soils Engineer. D. It is also the Contractor's responsibility to have suitable and sufficient compaction equipment on the job site to handle the amount of fill being placed. If necessary, excavation equipment will be shut down to permit completion of compaction. Sufficient watering ' apparatus will also be provided by the Contractor, with due considera- tion.•for the fill material , rate of placement, and time of year. E. A final report shall be issued by the Soils Engineer and Engineering ' Geologist attesting to the Contractor's conformance with these specifications. ' II. SITE PREPARATION A. All vegetation and deleterious material such as rubbish shall be dis- posed of offsite. This removal shall be concluded prior to placing fill . . ' B. Soil , alluvium, or bedrock materials determined by the Soils Engineer as being unsuitable for placement in compacted fills shall be removed 1 Standard Grading Specifications Page Two and wasted from the site. Any material incorporated as a part of a compacted fill must be approved by the Soils Engineer. C. After the ground surface to receive fill has been cleared, it shall be scarified, disced, or bladed by the Contractor until it is uniform and free from ruts, hollows , hummocks , or other uneven features which may prevent uniform compaction. The scarified ground surface shall then be brought to optimum moisture, ' mixed as required, and compacted as specified. If the scarified zone is greater than twelve inches in depth, the excess shall be removed and placed in lifts restricted to six inches. ' Prior to placing fill , the ground surface to receive fill shall be inspected, tested, and approved by the Soils Engineer. D. Any underground structures such as cesspools , cisterns, mining shafts , tunnels, septic tanks, wells , pipe lines, or others are to be removed or treated in a mannerprescribed by the Soils Engineer. ' E. In cut-fill transition lots and where cut lots are partially in soil , colluvium or unweathered bedrock materials , in order to provide uniform ' bearing conditions , the bedrock portion of the lot extending a minimum of 3 feet outside of building lines shall be overexcavated a minimum of 3 feet and replaced with compacted fill . Typical details are given on Plates SG-1 . III. COMPACTED FILLS tA. Any material imported or excavated on the property may be utilized in the fill , provided each material has been determined to be suitable by the Soils Engineer. Roots, tree branches , and other matter missed t during clearing shall be removed from the fill as directed by the Soils Engineer. ' B. Rock fragments less than six inches in diameter may be utilized in the fill , provided: ' 1 . They are not placed in concentrated pockets. 2. There is a sufficient percentage of fine grained material to surround the rocks. 3. The distribution of rocks is supervised by the Soils Engineer. I C. Rocks greater than six inches in diameter shall be taken offsite, or placed in accordance with the recommendations of the Soils Engineer in areas designated as suitable for rock disposal . (A typical detail for Rock Disposal is given in Plate SG-2. ) 1 .1 1/ IStandard Grading Specifications Page Three D. Material that is spongy, subject to decay, or otherwise considered unsuitable shall not be used in the compacted fill . E. Representative samples of materials to be utilized as compacted fill shall be analyzed by the laboratory of the Soils Engineer to determine their physical properties. If any material other than that previously ' tested is encountered during grading, the appropriate analysis of this material shall be conducted by the Soils Engineer as soon as possible. ' F. Material used •in the compacting process shall be evenly spread, watered, processed, and compacted in thin lifts not to exceed six inches in thickness to obtain a uniformly dense layer. The fill shall be placed and compacted on a horizontal plane, unless otherwise approved by the ' Soils Engineer. G. If the moisture content or relative density varies from that required by the Soils Engineer, the Contractor shall rework the fill until it is approved by the Soils Engineer. H. Each layer shall be compacted to 90 percent of the maximum density in compliance with the testing method specified by the controlling governmental agency. (In general , ASTM D-1557-78, the five-layer method will be used. ) If compaction to a lesser percentage is authorized by the controlling governmental agency because of a specific land use or expansive soil ' condition, the area to receive fill compacted to less than 90 percent shall either be delineated on the grading plan or appropriate reference made to the area in the soils report. I. All fills shall be keyed and benched through all topsoil , colluvium alluvium, or creep material , into sound bedrock or firm material where the slope receiving fill exceeds a ratio of five horizontal to one ' vertical , in accordance with the recommendations of the Soils Engineer. J. The key for side hill fills shall be a minimum of 15 feet within bedrock ' or firm materials , unless otherwise specified in the soils report. (See detail on Plate SG-3. ) K. Subdrainage devices shall be constructed in compliance with the ordinances of the controlling governmental agency, or with the recommendations of the Soils Engineer or Engineering Geologist. (Typical Canyon Subdrain details are given in Plate SG-4. ' L. The contractor will be required to obtain a minimum relative compaction of 90 percent out to the finish slope face of fill slopes, buttresses , and stabilization fills. This may be achieved by either overbuilding the slope and cutting back to the compacted core, or by direct compaction of the slope face with suitable equipment, or by any other procedure which produces the required compaction. 1 Standard Grading Specifications Page Three D. Material that is spongy, subject to decay, or otherwise considered unsuitable shall not be used in the compacted fill . E. Representative samples of materials to be utilized as compacted fill shall be analyzed by the laboratory of the Soils Engineer to determine their physical properties. If any material other than that previously tested is encountered during grading, the appropriate analysis of this material shall be conducted by the Soils Engineer as soon as possible. ' F. Material used in the compacting process shall be evenly spread, watered, processed, and compacted in thin lifts not to exceed six inches in thickness to obtain a uniformly dense layer. The fill shall be placed ' and compacted on a horizontal plane, unless otherwise approved by the Soils Engineer. G. If the moisture content or relative density varies from that required by the Soils Engineer, the Contractor shall rework the fill until it is approved by the Soils Engineer. ' H. Each layer shall be compacted to 90 percent of the maximum density in compliance with the testing method specified by the controlling governmental agency. (In general , ASTM D-1557-70 will be used, either ' with a 5 layer or 3 layer curve) . If compaction to a lesser percentage is authorized by the controlling governmental agency because of a specific land use or expansive soil condition, the area to receive fill compacted to less than 90 percent shall either be delineated on the grading plan or appropriate reference made to the area in the soils report. I. All fills shall be keyed and benched through all topsoil , colluvium alluvium, or creep material , into sound bedrock or firm material where ' the slope receiving fill exceeds a ratio of five horizontal to one vertical , in accordance with the recommendations of the Soils Engineer. J. The key for side hill fills shall be a minimum of 15 feet within bedrock or firm materials , unless otherwise specified in the soils report. (See detail on Plate SG-3. ) ' K. Subdrainage devices shall be constructed in compliance with the ordinances of the controlling governmental agency, or with the recommendations of the Soils Engineer or Engineering Geologist. (Typical Canyon Subdrain details are given in Plate SG-4. ' L. The contractor will be required to obtain a minimum relative compaction of 90 percent out to the finish slope face of fill slopes, buttresses, and stabilization fills. This may be achieved by either overbuilding the slope and cutting back to the compacted core, or by direct compaction of the slope face with suitable equipment, or by any other procedure which produces the required compaction. i i 11 Standard Grading Specifications Page Four M. All fill slopes should be planted or protected from erosion by other methods specified in the soils report. ' N. Fill-over-cut slopes shall be properly keyed through topsoil , colluvium or creep material into rock or firm materials , and the transition shall be stripped of all soil prior to placing fill . (See detail on Plate iSG-7). ' IV. CUT SLOPES A. The Engineering Geologist shall inspect all cut slopes at vertical intervals not exceeding ten feet. ' B. If any conditions not anticipated in the preliminary report such as perched water, seepage, lenticular or confined strata of a potentially adverse nature, unfavorably inclined bedding, joints or fault planes encountered during grading, these conditions shall be analyzed by the Engineering Geologist and Soils Engineer, and recommendations shall be made to treat these problems. (Typical details for stabilization of a portion of a cut slope are given in Plates SG-5 and SG-8. ) C. Cut slopes that face in the same direction as the prevailing drainage ' shall be protected from slope wash by a non-erodible interceptor swale placed at the top of the slope. ' D. Unless otherwise specified in the soils and geological report, no cut slopes shall be excavated higher or steeper than that allowed by the ordinances of controlling governmental agencies. ' E. Drainage terraces shall be constructed in compliance with the ordinances of controlling governmental agencies, or with the recommendations of the Soils Engineer or Engineering Geologist. V. GRADING CONTROL ' A. Inspection of the fill placement shall be provided by the Soils Engineer during the progress of grading. B. In general , density tests should be made at intervals not exceeding two feet of fill height or every 500 cubic yards of fill placed. This criteria will vary depending on soil conditions and the size of the ' job. In any event, an adequate number of field density tests shall be made to verify that the required compaction is being achieved. ' C. Density tests should also be made on the surface material to receive fill as required by the Soils Engineer. i „2,37 Standard Grading Specifications Page Five D. All cleanout, processed ground to receive fill , key excavations , subdrains , and rock disposals must be inspected and approved by the Soils Engineer or Engineering Geologist prior to placing any fill . It shall be the Contractor' s responsibility to notify the Soils Engineer when such areas are ready for inspection. VI. CONSTRUCTION CONSIDERATIONS A. Erosion control measures, when necessary, shall be provided by the Contractor during grading and prior to the completion and construction of permanent drainage controls. ' B. Upon completion of grading and termination of inspections by the Soils Engineer, no further filling or excavating, including that necessary for footings , foundations, large tree wells, retaining walls, or other features shall be performed without the approval of the Soils Engineer or Engineering Geologist. C. Care shall be taken by the Contractor during final grading to preserve any berms, drainage terraces , interceptor swales, or other devices of permanent nature on or adjacent to the property. 1 1 1 � �S I GENERAL GRADING RECOMMENDATIONS CUT LOT I I . .- - --- _---- Or/chino/ - Ground roPso'�' bedri CC. . -- 1 _- ---- - Warnerea 3' ,, 3' I -� Overexcovofe and regrow - Untueofhered IBPdrocC I . I CUT-FILL LOT (Transition) I . • I - origin/ - Ground I -L�- �� -' 3' 1 ! I - ..-INNIilk 3' Coinpocfed --'- -�- } Fill G°�(UJIv�-- I I ----5°j/I O° ........ OYere cova/I e r°Pd r�a�' j and regrode i 1 1: -- Unweo/hered I14 e° eedroc,c I • 4 /86 PETRA GEOTECHNICAL, INC . I PLATE SG- 1 .z3, I ROCK DISPOSAL DETAIL I I I . 1 Finished Grade Clear- area for foundations, .• I pMit/es, and suiimrnin9 pools /3 -Cr U 7:5 " _ \ I 0 0 I . O inN. s/ape Face 4' 1---/5'---1 i 1 j /\ Street Windrow T— I • 5' or be/ow depth of deepest u//lily trench, 1 whichever is greater. TYPICAL WINDROW DETAIL (edge view) IGrano/or soil f/oceed to fill voids Norijontolly placed _ I Gompocted f/// - i /5' • 1 PROF/LE V/EW 1 • I .0::::.:: n . . .. .r 4/86 PETRA GEOTECHNICAL, INC . I —7--,sec, - 9 28 9 PLATE SG-2 ' TYPICAL FILL ABOVE NATURAL SLOPE I I I T 1 Ifinished Grade ICornpcxfed NI/ -. -f J I . '-- - -l Toe of slope as ---� ��.� 111III-� I . shown on yrgdin9 --- G - I' Typical pion --- d edf- here b 1 va!ea� .411= No,ural ropc 9rophy In, - t ------ vs./801-116,- Go//c/�� - /0' Typical I / X11= ro�5 --- -- Bedroc.r or approved foundation material II _-- 41 I -III- -IIl I 2'ruin. l /5' Minimum Downslope Bose Key Wall/ h Key Dep/h 1 NOTE : Where no/ural s/ope groat/en/ /5 5:/ or less benching is no/ necessary ; however, fill /5 not I to le placed on compressible or unsuitable ma/er/o/. I .. 1 . 1 4/86 PETRA GEOTECHNICAL, INC . PLATE SG-3 k IT YP/G44 GANycw SUoO/PA% i I \\\ N¢fur¢/ Grounq �/ Unsui/ab/e Ala fer/a/ 1 A ITypical Bench/icy I •O.• �Bedroce or Sse Oet4i%Be/off Canape ten f Mc:fericz/ I NOTE: Fina/ ZD f1 0/520-06* a/ oul/et _ .. _ shall be non-perfor-ated. I _ . o O - I ° 1 - 0 ' • Filler /iafericr/-/1iivmrim p •• • • • > •o 0 . of 9 cubic feel` per /,'?real I Depth and 6eo'o ? . - a F po • • foot. See /Vale SG-!o fo may vary lLii1h,o ae N a Fi%ter /Yla/eria/ S�ecifi- and/bad chara cr'r- . °• . . a • • . . co,ions. 1 ,'slice a p o. o A/term le iin/i'eu of Fi/ter •>/e0 ' 4later/a/ : 9 cubic/eet�r 0 ' o _ /ii)ea/ fool of O�n-Gra'ded . _ . ' . o o Grave/ encased in Fi/ter' . . ' C °0 . c • Fabric. See P/ate So-a I o • • . °' •• for Grave/ SPecifica/thos. Filler Fabric s/ia//be 1 SruPac 5-P or approved eyua/. I i/i/i7im im !o -ii7c.5 dice-me/et- PVC schedu/e 5105 or ABS SoC-3S gill,' a maa norm of /0?erfora/ibns Per /ii,ea/ foo/ /27 botfom half of pipe . I . For continucu5 runs in excess of 500 feel use 8-/?Pc1/2 c1/22-erne Ler pine I 4/86 PETRA GEOTECHNICAL, INC . I • PL ATE Sc-¢ al9 ' BUTTRESS OR STABILIZATION FILL DETAIL 1 1 I 1 i ' I--- ft. min. 1 1 4" subdroin 1 • XG�� �0 30 fL mox. sp0ciny/ ,0� G J� 1 4" subdroin . Adt ZffJ.min 2 % ' - Width varies /3 ft. min. 1 1 1 1 ' 10/86 PETRA GEOTF.C19.9ICAL, INC . IPLATE SG-5 04D T YP/CAL BUTT,PES S o,2 STAB/L/ry ,C/LL SUBO,PA/N l ' Slo a Face Approved filter material . p V 5 cubic feet per linear foot, ' without filter fabric, 3 cubic A feet with fabric. ' r2% minimum /'-••.7 4-inch perforated pipe with I . Aperforations down. Minimum 2% grade to outlet pipe. A t_inc)non_perforatedP P i e. Minimum 2% grade to'outlet. llApproved on site material 'per Soil Engineer --7 . compacted to 90% maximum density. • •• ^ E --- 4-inch non-perforated pipe. • 1 *A L12". 1 II • min. . SECTION A-A . • PIPE SPECIFICATIONS .- I1 . 4-inch minimum diameter, PVC schedule 40, or ABS SOR-35. • • 2. Minimum. 16 perforations per foot on bottom one.thirdlpf pipe. I ' FILTER MATERIAL SPECIFICATIONS Class 2 Permeable Filter Material per Caltrans Standard Specification 68-1 .025. - Class 2 - . • Sieve Size : Percent Passing - 1-inch100 3/4-inch 90-100 3/8-inch 40-100 IINo. 4 25-40 No. 8 • 18-33 No. 30 - 5-15 No. 50 0-7 IINo. 200 0-3 ALTERNATE: Open Graded Gravel encased- in .filter Fabric I Open Graded Sieve Size Percent Passing 1%-inch 88-100 ' 1-inch 5-40 3/4-inch 0-17 3/8-inch 0-7 I No. 200 0-3 l 10/86 PETRA GEOTECHNICAL, INC . II FLA TS So-th -Pa a a M a a s a a a a a a . a• a a a a a a • TYPICAL FILL ABOVE CUT SLOPE • • Cut/Fill contact shown on rod/79 p/on Ail Shown on "os-built " • • JE pernove oil topsoil, co/ivy/um, or 7 r v��r mor GreeP r r creep moter/o/ from trans/lion ;i� ; ���lll�ll {4. Typico/ oil ��° } rrr err vanes _•=.- — Natural Topography ' r r r r/ rrr—Z% Min. /o 1 Typ/Ga/— •_1141 r Bedrocx or approved Cut —77/5' Minimum • lou,xYo/,a'7 motcrio/ • or FL•r 5oi/.n9meer =DI 0 H M n z a • ri • ' S TA.63/Z. /Z.4 770A/ /Z/L L - When unsfab/e Ma ler-/a/ EX0osec' I /n •°or tic Of Cuf S/re . 1 . . P - I I I --I -/ /I Natural Toorah / // II . - // // ,I / /// // r finished Grade i / III-II I ��� p55 /�� .�. ��� tQ/jC h/// ¢ Typ. any 0111 .....'#*-'.. i � . 1_ var%cs I . I 'o'ry /� /• Compacted Eft/ --gone / ne. - // F �� Bedroc•e or Approved ���, =ii I Foundat,on Materia/ I PV/ • I NOTE : /. Subo'roins not required unless specified. I2. 'W" shall be equipment width (15') for Slope heights less than SO feet. For Slope heights greater than 30 feel "IV° shall be o'eferrnined by the project soil. I engineer. I I 4/86 PETRA GEOTECHNICAL, INC . ' RATE SG-B 020.3 1 1 1 I 1 APPENDIX D STABILITY CALCULATIONS ' FOR 2 : 1 FILL SLOPE, HEIGHT = 60 FEET I 1 I 0141 ' --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer 's Method of Slices IPROBLEM DESCRIPTION 2 . 1 FILL SLOPE, HEIGHT = 60 FEET ' BOUNDARY COORDINATES • I 5 Top Boundaries 5 Total Boundaries ' Boundary X-Left Y -Left X--Right X-Right Soil Type No . ( ft ) ( ft ) ( ft ) ( ft ) Below 'end I 1. . 00 30 . 00 30 . 00 30 . 00 1 2 30 . 00 30 . 00 90 . 00 60 . 00 1. 3 90 . 00 60 . 00 96 . 00 60 . 00 1 I 4 96 . 00 60 . 00 156 . 00 90 . 00 1 5 156 . 00 90 . 00 240 . 00 90 . 001 ' ISOTROPIC SOIL PARAMETERS ' J. Type ( s ) of Soil ISoil Total Saturated Cohesion Friction Pore Pressure Pies . Tyr,e Unit Wt . Unit Wt . Intercept Angle Pressure Constant Surface ' N ( pof ) ,ll) ..r;: ,. ) (day ) Paiam . ( pSf ) No . 1 135 . 0 135 . 0 100 , 0 39 . 0 . 00 0 0 1 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Irregular Surfaces, Has Peen Specified . I400 Trial Surfaces Have Been Generated . I • 20 Surfaces Initiate From EachOf 20PointsEqually, Spaced Elu..l 1 Along The Ground surface Between Y. = 15 00 ft . and Y. = 40 . 00 ft . Each Surface Terminates Between�etwen X = 140 . 00 ft . and X = 170 . 00 ft . ' Unless Further Limitations Were Imposed, The Minimum Eleva Lion At Which A Surface Extends Is I = . 00 ft . I 10 . 00 ft . Line Segmentu Define Each Trial Failure Surf ce < IJ .N . 298-87 I 7 e,.1 973 X PAGE No . l jy5 Following Are Displayed The Ten Most Critical Of The Trial II Failure Surfaces Examined . They Are Ordered - Most Critical First . 1 * * Safety Factors Are Calculated By The Modified Janbu Method * * Failure Surface Specified By 18 Coordinate Points IPoint Y,-Surf Y-Surf No . ( ft ) ( ft ) I1 26 . 84 30 . 00 34 . 64 23 . 73 ' 3 44 . 06 `3 . 's0 20 . 40 4 24 . 24 5 62 . 05 29 . 07 6 71 . 52 32 . 29 I 7 80 . 59 36 . 51 8 90 . 53 37 . 54 9 99 , 39 42 . 18 ' 10 108 . 35 46 . 62 11 .1.7.8 . 46 , 78 12 127 . 44 50 . 95 ' 13 136 . 63 54 . 90 14 142, . 22 63 . 19 15 149 . 54 70 . 01 I 16 157 .12 76 . 53 17 160 . 23 85 . 04 1'. 162 . 41 0 . 00 ' *Y'* .1 3499 **+ Failure Surface Specified By _ . Coordinate Points Point X-Surt Y--Surf No . ( ft , ( ft ) 1 36 . 95 33 . 03 ' 2 44 . 34 27 . 43 54 . 15 25 . 47 4 63 . 39 27 . 74 S 72 . 58 32 , G8 ' 6 22 . 2R 91 , 14 39 . 68 8 100 . 42 . 59 I 910 i1n . 68 43 : 74 11 :27 , 47 5, = . 49 ' 12133 : . .: 19057 62 . 37 1 C9 . 17 14 144 . 02 1.5 47 . 87' nc 91 I 3 .N . 199-87 PACE Nc . 2 I aU6 ' Failure Surface Specified By 15 Coordinate Points Point X.--Suff Y- Surf INo . ( ft ) ( ft ) 1 40 . 00 25 . 00 ' 2 48 . 29 29 . 41 3 58 . 10 27 . 45 4 67 . 84 29 . 71 5 76 . 53 34 . 65 ' 6 86 . 22 95 . 13 37 . 11 7 41 . 66 8 104 . 70 44 . 56 ' 9 114 . 63 122 . 58 45 . 71 10 51 . 7a 11 131 . 42 56 . 47 12 137 . 58 54 . 34 ' 13 144 . 91 71 . 14 14 147 . 97 80 . 65 15 151 . 77 87 . 88 I *** 1 . 851 *** I ' Failure Surface ;pedif .ed By 15 Coordinate Points Point X-Surf Y-Surf INo . ( ft ) ( 81 ) 1 40 . 00 35 . 00 • . 48 . 2 5)3 . 10 '`-'T ,t 4 L' 5 4 67 . 84 79 . 71 5 76 . 53 .31 . 65 I 6 86 . 22 . 7 . 1.1 7 95 . 13 41 . :6 8 104 . 70 . 44 . 56 ' 9 114 . 53 4 :, . 71 10 2 . 58 51 . 78 11 131 . 42 56 . 47 12 137 . 58 64 . 34 ' 13 144 . 91 71 . 14 14 147 . 97 80 . 66 15 151 . 77 87 . 88 1 r.** 1. . 851 *** I I IJ ,N . 298-R7 PACE No . ' Failure Surface Specified By 15 Coordinate Points Point X-Surf Y--Surf INo . ( ft ) ( ft ) 1 32 .11 31 . 05 ' 2 40 . 40 25 . 46 50 . 20 23 . 50 4 59 . 94 25 . 77 5 68 . 63 30 . 71 6 78 . 33 33 . 16 7 87 . 24 37 . 71 8 96 . 80 40 . 61 ' 9 106 . 74 114 . 69 41 . 77 10 47 . 83 11 123 . 52 52 . 52 12 129 . 68 60 . 40 I 13 137 . 02 67 . 19 14 140 . 0'? 76 . 71 15 143 . 87 83 . 94 I *** 1 . 851 *** IFailure Surface Specified By 16 Coordinate Points IPoint X-Surf . -Surf No . ( fL ) ( ft ) 30 , 79 `0 . 2 40 . 12 33 , 96 3 19 . 62 962 7 . 11 4 59 . 28 39 . 69 58 . 52 43 . 52 6 77 . 57 47 . 79 111 7• 87 . 22 50 . 42 8 9'; 1 7 19 . 51 9 9 51 9 107 . 17 49 . 14 10 116 . 37 53 . 05 11 125 . 47 57 . 19 12 134 . 11 62 . 23 13 143 . 48 65 . 72 ' 14 151 . 07 72 . 23 15 155 . 20 81 . 34 16 159 . 73 90 . o I ** 1 . 857 **.+: • I I II J .N . 298 .87 PAGE No . 4 I in Failure Surface specified By 16 Coordinate Points Point X-Surf Y-Surf INo . ( ft ) ( ft ) 1 32 . 11 31 . 05 ' 2 41 . 45 34 . 62 3 50 . 94 37 . 77 4 60 . 60 40 . 35 5 69 . 84 44 . 18 I 6 78 . 88 48 . 45 88 . 53 51 . 07 8 98 . 49 50 . 17 9 108 . 48 49 . 79 10 117 . 69 53 . 71 11 126 . 79 57 . 85 12 135 . 43 62 . 88 ' 13 144 . 80 66 . 33 14 152 . 39 72 . 89 15 156 . 51 82 . 00 ' 16 160 . 70 90 . 00 ' *** 1 . 858 *** I • Failure Surface Specified By 16 Coordinate Point Point X-Surf Y-Surf Ni., . ; 5t ) ( ft ) ' 1 33 . 42 31 . 71 42 . 77 35 . 27 a 52 . 25 38 . 9 4 61 . 92 41 . 01 ' 5 71 . 25 44 . 94 6 80 . 20 49 . 10 89 . 85 51 . 73 8 99 . 81 50 . 83 109 . 80 50 . 45 10 119 . 00 54 . 36 ' 11 128 . 10 5U . 51 12 136 . 74 63 . 54 13 1-46 . 1.1 67 . 04 14 153 . 70 73 . 55 I 15 157 . 8` 32 . 66 16 161 . 68 90 . 00 *** 1 . 862 *** 1 J .N . 298- 87 PAGE No . 5 I ,lag ' Failure Surface Specified By 16 Coordinate Points Point X-Surf y--Surf No . ( ft ) ( ft ) 1 33 . 42 31 . 71 ' 2 42 . 77 35- . 27 3 52 . 25 38 . 43 4 61 . 92 41 . 01 5 71 . 15 44 . 84 I 5 80 . 20 49 . 10 7 39 . -35 51 73 8 99 . 31 50 . 83 • 9 109 . 30 119 . 00 50 . 45 10 54 . 30 11 128 . 10 58 . 51 12 136 . 74 63 . 54 I 13 146 . 1] 67 . 04 14 153 . 70 73 . 55 15 157 . 83 82 . 66 ' 16 161 . 68 90 . 00 ' *** 1 . 362 *** IFailure Surface Specified Ey 16 Coordinate Points I Point X-Surf x'-Set [d ( ft ) . tt 34 , 7 ,4 3 37 2 44 . 08 35 . 93 3 53 . 57 39 . 09 4 53 . 23 41 . 67 I 5 72 . 47 45 . 49 6 81 . 51 49 . 76 7 91 . 16 52 . 39 S 101 . 12 51 . 49 9 333 . 11 51 . 11 10 120 . 32 55 . 02 11 129 . 42 59 . 16 12 - 138 . 06 6.:4 . 20 13 147 . 43 67 . 70 14 155 . 02 74 . 21 I 16 159 . 15 33 . 32 It li; . 65 90 . 00 Ir. *.e 1 . 369 *** I ' j .N . 298-87 PAGE No . 6 I ,940 A X . 00 30 . 00 60 . 00 90 . 00 120 , 00 150 . 00 . 00 + +- -+- . . 1 30 . 00 .4 * - 5 . 63 - . . . . . 1 . 2 . . 8 C 1 . 67 1 . . . 0 A 60 . 00 .31 68 2 31 . 6 . 23 . 51 . . 60 . • 35 . 6 X 90 . 00 . . . . . . . . . 7 . * 11•1 G * 1 . . 7 . . 51g 217 . . . 120 . 00 + 35 6 127 . . 126 1 . 25 - . . . . . . . . . . . 1 . 2 . . 5 . . CO3 . 7 c. 150 . 00 + 16 . . 1 . 2 816 . . * 811 0 180 . 00 4 210 . 00 + 240 . 00 * 7 .N . 298- 87 PAGE No . 7 424/ A Horizontal Earthquake Loading Coefficient IOf . 150 Has Been Assigned A Vertical Earthquake Loading Coefficient IOf . 000 Has Been Assigned Cavitation Pressure = . 0 psf A critical Failure Surface Searching Method, Using A Random Technique For Generating Irregular Surfaces , Has Been Specified . I 400 Trial Surfaces Have Been Generated . ' 20 Surfaces Initiate From Each O;. 20 Points Equally Spaced Along The Ground surface Between X = 15 . 00 ft . Iand X = 40 . 00 ft . I Each Surface Terminates Between X = 140 . 00 ft . and X = 170 . 00 ft . ' ' Unless Further Limitations- Were -Imposed, The Minimum Elevation At Which A Surface Extends Is Y = . 00 ft . 1 10 . 00 ft , Line Segments Define Each Trial Failure Surface . 11. Following Are Displayed The Ten Most: Critical Of The Trial ' Failure Surfaces EX:airline , They Are Ordered -- Most Critical First . I * * Safety Factors Are Calculated By The Modified Janbu Method ._ * Failure Surface Specified By 16 Coordinate Points Point X-Surf `.i-Surf INo . ( ft ) ( ft ) 1 30 . 79 30 . 39 I 2 40 . 13 33 . 96 49 . 6 3;' . 11 4 59 . 28 39 . 69 ' 5 68 . 52 4.3 . 52 6 7757 47 . 79 7 87 . 22 50 . 42 8 I 97 . 17 49 . 51 9 107 . 17 4`. _ i4 10 '16 . 37 53 . 05 11 125. 47 57 . 19 IJ .N . 298-87 PAGr^. No . u I 4 Se 12 134 . 11 62 . 23 I 13 143 . 48 65 . 72 14 151 . [)7 72 . 23 15 155 . 20 81 , 34 I15 159 . 73 90 . 00 *** 1 . 326 *** Failure Surface Specified By 16 Coordinate Points Point X--Surf `_t -Surf No . ( ft ) ( ft ) ' 1 32 . 11 31 . 05 41 . 45 34 . 62 7 50 . 94 37 . 77 4 60 . 60 40 . 35 I 5 69 . 84 44 . 18 6 78 . 88 48 . 45 7 88 . 53 51 . 07 ' 8 98 . 49 108 . 48 50 . 17 9 49 . 79 10 117 . 69 53 . 71 ' 11 126 . 79 57 . 85 12 135 . 43 62 . 88 13 144 . 80 66 . 38 , 14 152 . 39 72 . 89 ' 15 156 . 51 82 . 00 16 160 . 70 90 . 00 ** 1 . 327 *** Failure Surface Specified By 16 Coordinate Points Point X-Surf -Surf INo . ( ft ) ( ft ) 1 33 . 42 31 . 71 2 42 . 77 35 . 27 ' -, 52 . 25 38 . 43 4 51 . 92 41 . 01 71 .::.5 44 . 84 80 . 20 49 . 10 7 89 . 85 51 . 7 ; . 99 . 81 50 . 83 I 9 . 109 " 8 :0 . 46 10 119 . 00 54 . 36 • 11 122 . 10 58 . 51 ' 1 135 . 74 146 . i1 63 . 54 1367 . 04 14 153 . 70 73 . 55 _ 15 7 . (1 83 82 . 66 11 16 151 . 68 90 . 00 ':*9• 1 . J78 :k *'* I i , d . 298 -87 I �� 9 /7 eg PAGE No . 9 -o Si ' Failure Surface Specified By 16 Coordinate Points Point X-Surf Y --Surf INo . ( ft ) ( ft ) 1 33 . 42 31 . 71 ' 2 42 . 77 35 . 27 3 52 . 25 38 . 43 4 61 . 92 4:. . 0.1 5 71 . 15 44 . 84 I 6 80 . 20 49 . 10 7 89 . 85 51 . 73 8 99 . 81 50 . 83 ' 9 109 . 80 119 . 00 50 . 45 10 54 . 36 11 128 . 10 58 . 51 12 136 . 74 63 . 54 I 13 146 , 11 67 . 04 14 153 . 70 73 . 55 15 157 . 83 82 . 66 ' 16 161 . 68 90 . 00 *** 1 . 328 *** ' Failure Surface Specified By 15 Coordinate Points ' Point X-Suri Y-Surf No . ( ft ) ( ft ) I1 36 . 05 .33 . 03 34 . .4 27 . 43 3 54 . 15 25 . 47 I 4 63 . 89 27 . 74 5 72 . 58 ?2 . 68 6 82 . 23 35 . 14 ' 7 91 . 13 100 . `i5 39 . 68 8 42 . ';9 9 110 , 68 43 . 74 10 118 . 64 49 . 80 12 127 . 47 54 . 49 1 L. 3 3. 62 . 37 13 140 . 97 69 . 17 ' 14 144 . 02 78 (:,(1 15 147 . 82 85 . 01 I * k _1 . 328 4*.Y I IJ,N . 298-87 PACE No . 10 a/4iY Failure Surface Specified By 18 Coordinate Points IPoint X-Surf Y-Surf No . ( ft ) ( ft ) I1 26 . 84 30 . 00 2 34 . 64 23 . 73 I 3 44 . 06 53 . 30 20 . 40 4 24 . 24 5 62 . 05 29 . 07 6 71 . 52 32 . 29 ' 7 80 . 59 90 . 53 36 . 51 8 37 . 54 9 99 . 39 42 . 18 I 10 100 . 35 118 . 35 46 . 62 11 46 . 78 12 127 . 44 50 . 95 13 136 . 63 54 . 90 ' 14 142 . 22 63 . 19 15 149 . 54 70 . 01 16 157 . 12 76 . 53 I 17 160 . 23 86 . 04 18 162 . 41 90 . 00 Ik*•A 1 . 328 *9 * I Failure Surface Specified By 15 Coordinate Pointe. I Point X-Surf Y-Sur I ' No . ( ft ) , rt ) .2 . 131 . 05 2 40 . 40 25 . 46 ' 3 50 . 20 23 . 50 4 59 . 94 .5 . 77 5 63 . 63 30 . 71 6 78 . 33 33 . 16.. 7 87 . 24 37 . 71 8 96 . 80 40 . 61 9 106 . 74 41 . 77 I 10 114 . 69 47 . 83 11 123 . 52 52 . 52 12 129 . 68 60 . 40 I 13 14 137 . 02 67 . 19 140 , 07 76 , 71 15 1_ 43 , 7 8:. . 94 *:L*• 1 , 326 ,k,4`Y I J .N. 298-87 PAGE No . 11 I #453 Failure Surface Specified By 15 Coordinate Points I Point X-Surf Y-Surf ' No . ( ft ) ( ft ) 1 40 . 00 35 . 00 2 48 . 29 29 . 41 ' 3 58 . 10 27 . 45 4 67 . 84 29 . 71 5 76 . 53 34 . 65 I 6 3(3 . 22 37 . 11 7 95 . 13 41 . 66 8 104 . 70 44 . 56 9 114 . 63 45 . 71 I10 122 . 58 51 . 78 11 131 . 9 56 . 47 12 137 . 58 64 . 34 ' 13 144 . 91 147 . 97 71 . 14 1480 . 66 15 151 . 77 87 . 88 ' *** 1 . 229 *** I 1 ' Failure Surface Specified By 15 Coordinate Points ' Point Surf Y--Surf No . ( ft ) ( ft. ) 1 40 . 00 35 . 00 I 2 48 , 29 29 . 41 ? 58 1„ '7 45 4 67 . 84 29 . 71 ' 5 `76 . 53 34 . 65 6 86 . 22 37 . 11 7 95 . 13 41 . 66 8 104 . 70 44 . 56 I 9 114 . 63 45 . 71 10 122 . 58 51 . 78 11 131 . 42 56 , 47 ' 12 137 . 58 64 . 34 13144 . 9171 . 14 14 147 . 97 80 . 66 ' 15 151 . 77 87 . 88 *** 1 . 329 *** I3 .N. 298-87 PACE No . 12 I nISL I II I N 3. h d 4 Ez( e2z_. Lis._.86ii. ' W f' ' I I . 1 I I I I I I *** TEE ' S ** 1 00 ' 06 S9 ' Z9T 9T I Z£ ' £8 - ST ' 6SI ST TZ ' 6L Z0 ' SST 6T , OL. ' L9 £6 ' LVT CT OZ ' 69 90 ' 8£T ZT 9T ' 6S 7,6 ' 6ZT TT ZO ' SS Z£ ' OZT OT TT ' TS 'MUT 6 66 ' TS ZT ' TOT 8 6£ ' ZS 91 ' 16 L 9L ' 66 TS -18 9 66 ' S6 L6 ' ZL S L9 ' T6 £Z ' £9 6 60 ' 6£ LS ' £S £ 16 ' S£ 80 ' 66 Z L£ —Z£ 6L ' 6£ T ( 13 ) ( 13 ) . IDN 37ng--T 32nS-X `4??Ffad SCi.140d a-4euTpzno3 9T Au p;rc3iOadS aoe4ans am-Neil I