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Langston Is Market, 15615,101nth Street, Lathrop, Gd!tornrsa � December 12, 1995 <br /> Phase I1Lraterral& Vertical a-tent o;Second Page. 2 <br /> G"rounrhvater Aquaf er fMork Pit-,t,,, <br /> 1•'orf Ifarlosir RL'1I'!r,?('.S (.T86113' 0 J:f11) <br /> Boi ng No, Tat-1 Depth PID Re:rdi <br /> SB 1 1) r _ _ U <br /> Y <br /> SB-1 14 Ft - -- _ a <br /> SB-1 - _ 17 Ft l 249 <br /> SB 2 9;t _ f� U <br /> SB-2 _ _ 14 Ft p <br /> SB-2 _ -- 17 F1 — - --47 <br /> SB-3 9 Ft U <br /> SB-3 -- - i41"ii ---�- <br /> _ -__ <br /> _ STS-3 -- <br /> SB- _�rY - -------_�_F __ _ -�- -- ° <br /> SB-4 11 Ft _ 14 <br /> -- SB-4 - -- — _ 17 Ft ------ -- -- - - 7 — — <br /> SB i-- - 4 '`` Y 7'9 __ <br /> SB t, ! 4 Ft _ --—- ---1 279-- <br /> - - -4- -- --- _�-_ <br /> SU-6 9 Ft x;60 <br /> SB-6 14 Fi _ � - - --- -- '176---- <br /> SB-6 _ 17 Ft- _ 853 <br /> -- SB-7 - _ _ 9 Ft _ o <br /> SB 7 14 Ft _ _U <br /> — <br /> SB-7 I7 Ft_ <br />' SB-8 __---_ - 9 F1 <br /> SB-8 _ _ _ 14 Ft U <br /> SB-8 17 Ft U _ <br />' All the above OVM rrad,nits. rrpiz,sent tlEe maximum reading registered by th,, 580B instrument <br /> during the sci eening of each sample Although O VM readings do not precisely correspond to <br /> chemical analysis the readings appioAimate the amount of gasoline present in the soil in parts-pet- <br /> million (ppm), of total petroleum hyarocarbon constituents <br /> As the above analyse, ndic«tc a Sl:sii rlLaA amount of gasoline rcinains in the Vadose zone soil at <br /> the site Only boirt+r; SB 3, SB-7, alid SB-8 appeared to be free of significant amount of total <br /> petroleum hydrocai bons Du: t , 1lir. shaiiuv� depth ori lie water table ( 17 5 feet), it is thet efore <br /> not surprising 1c. find that or; ;;ltd xYatei (I i ility hay been iinpacted by die i elea,e of nearly 3,200 <br />' gallons of gasoline, fi orn he Failed underground fv A tank B-,i ings SB-5 and SR-6 were drilled <br /> directly bene-lth tho center and the Called +.nd of the foime. t;nk iespcetively The highest OVN4 <br /> readings were found tilrc+ughr�tit tlni� 011 C(141 in +ri 11 CSC t�vo tocation,� ( rjIlflrrl-1112 that the source <br />' of the gasoline ii, tYe soil oripr-.acs ;,oni ilii, t— i indcrgi okm.l 1'uc] <br /> On July 27, 1995, ti's'lll int., , 1,1 COtiI>aric1..)ri Ovitn SL-"rl( 'i list undc,. a Sail JoagU111 County <br /> approved work plan, d itod Oct,,bi., 1 I 14`4 I begin. m1c,nin Iemi,dial C.1'Alvitiv.� 1E this site with the <br /> removal of Surface. ,in.,ctuie, and &)ttijil; to fiirtFiei if fine tine limits of t,untamination <br /> 1 <br />