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d S <br /> a <br /> Mobil Oil: Corpordiffo a �5� F 38M WEST ALAMEDA AVENUE,SUITE 700 <br /> a'1,� BUfiBANK,CALIFORNIA 945054331 <br /> F E B 1 1 1992 <br /> ?' ary-t 1991 <br /> Ms. Mary Meays ' FORD MOBIL BULK -PLANT <br /> San Joaquin County 500 EAST GRANTLINE� ROAD <br /> Environmental- Health Division TRACYOCALIFORNIA <br /> -1601 East Hazelton Ave. <br /> Stockton, CA 95201 <br /> Dear Ms. Meays: <br /> Enclosed .for your informatin .is the .quarter_ ly monitoring <br /> report dated. January_21_,_1:9 92,�f or-su act locat'ion. Th_e3 <br /> average depth _to the ground waterwas""104feet .and the <br /> general ground -water `hydraulic gradient onsite was 0. 011 <br /> foot/foot to the northeast'—. TPHG, TPHD, and BTEX <br /> constituents were not detected above .method_.detection <br /> r limits in ground. water. samples Lfrom wells AW-1,; AW.;�2_,_and W- <br /> AW-4 throughTAW 8_.;,FCoriceritrations of TPHD,=TP__HG,_And.Xy_lenes. <br /> - were detected from,AW:-3_..r <br /> ' If you have any questions, Please feel free to call me at <br /> (818) -953-'2626. <br /> I - <br /> Sincerely, <br /> Stephen. Pao <br /> I <br /> Field Engineer II <br />€ <br /> enclosure <br /> Mr. Elizabeth Thayer (w/ enclosure) <br /> RWQCB= Central Valley Region <br /> 3443 Routier Road <br /> Sacramento-, CA 95827 <br /> I <br />