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NEW - - <br /> a "t.. _Y m M F.� :"� w ....!v. <br /> ^r,. —�'w-r.+2.^. w. Sx"'r+, ,P;(''.i y. •y y '�„ 'may F` -+,,4.: _ _ zsr w• "�. Sa'°a .:5eti" ''�T. M - <br /> k� <br /> LOG OF EXPLORATORY BOR n <br /> � G <br /> Page 1 of 2 <br /> PROJECT NUMBER 438-22.01 ARCO <br /> BH 2908 Benjamin Holt Drive BORING NO. E-1 <br /> BY <br /> DATE 5/24J84 Stockton. California SURFACE ELEV. - <br /> CLASSIFICATION DATA FIELD DATA + <br /> K <br /> Plsstb Complies. Penetra. .F - <br /> Liuid sm tion ^ n <br /> %Fou qs <br /> city c iE DESCRIPTION <br /> 1•No.2001 Limit Index Stength {Blows/ $ H - <br /> (TSF) I:t.) a <br /> 2-inches Asphat an -inches <br /> •-'=�i;� Baserock <br /> Black (5Y 2.5/2) slightly clayey <br /> ..�•: sand FILL <br /> -- (CL)Black (2.5Y-N2/0) sandy silty <br /> CLAY has faint product odor - <br /> dry <br /> 5 (dark alive gray (5Y 3/2) fine <br /> 15 sandy has faint product odor <br /> and rare coarse-sand - damp) <br /> 10 (mottled dark gray (2.5Y N4/0) <br /> 15 and alive brown (2.5Y 4/4) silty <br /> has strong product odor and <br /> trace of roots - damp <br /> 12 15 ;• (SC)Olive gray (5Y 4/2) clayey fine <br /> SAND contains thin silty clay <br /> D interbeds and moist <br /> (thin sand interbeds) <br /> (CL)Olive brown (2,57 4/4) silty <br /> 20 CLAY - moist <br /> 41 (SP)Olive brown (2.5Y 4/4) slightly <br /> clayey SAND - wet <br /> J REMARKS: Boring was converted to a ground-water monitoring well by <br /> backfilling from 24 feet to 23 feet with bentonite and by installing <br /> 21 feet of 3-inch PVC casing. The lower 15 feet of casing was slotted an <br /> the annular space was backfilled with pea gravel from 23 feet to S feet. <br /> A benthonit concrete $eat wa placed from 5 feet ho 1 foot. The well was '.�.m�fl� <br /> cappewit�r a roefective vau t box and a lockin evice. <br />