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05 l4ay I 997 <br /> AGNE- C y x <br /> 1V4 rT <br /> Page 7 of 9°gect No 95-OI 39 <br /> 1 N ! a q= 14 <br /> J <br /> u <br /> Placed in a chilled c <br /> " a(l4A') zn Pacheco ontaznernand transported <br /> dance a Cali fo a Each sans under chain <br /> Y with -of custody to McC <br /> EPA methods 8015' pie �'as anal zed for Tp amPbell Anal is <br /> . m and 602 respectively H-g and TpH-d and BTE&xnn z <br /> 33 UTLL SURVEY, <br /> r� , <br /> A list of rnunzcz <br /> Trac pal wells within the Cir <br /> Y public Works Water Depae Y of Tracy was obtain <br /> re`Izst obtained <br /> The approximate wnt was subse ed from the P <br /> from the subject prop quentl <br /> e11 Locations were y contacted to con ft kIs-EHI) The City Of, , <br /> P pertY determined then rm the coin <br /> i Plotted and the plete' of <br /> distance and due <br /> clion <br /> DINGS <br /> �Y r A r w x <br /> GkOUND n 1 4 I J <br /> WATER GRADIENT AND D! <br /> The' J <br /> e}euatzon of RECTION ~ , <br /> from the surveyed <br /> water in ' <br /> rasiri each well" ' <br /> 10 56 feet topsg elevation ) De calculated by subtracting below the (Table 4 <br /> elevation decreased an v age casings I)Ween ground water at theground at depth <br /> A 1996 g d fro <br /> 35 feet at the site and January Tri $ 00 to <br /> The ground water I997, ground water <br /> aPProxi natel Ow dlrectlon `co <br /> northern Y 0 001 I #!/ft at the sou ntznues to <br /> Pardon of the site rizern be northerly, The <br /> P-rev16us Portion Of the site to a gradient steepens <br /> monitoring events The gradient PProxzmate2 from <br /> r C' <br /> On Table 5 Historical nt and fI°ur direction are sl Y 0 003 7 ft ft <br /> Current groundwater ground water mzlar to those at the <br /> ater elevation flou dtrectzon and measured during <br /> ~ ' contours gradient da <br /> uJ /^ y - are illustrated on Fz ]� q are <br /> s))�yy''y��jy)/q z <br /> T+y 'a L ' ` n « f k 5 Sure 1�.1;Y a lzcd ` <br /> G <br /> TP PATORY ANALYSIS pF RO , <br /> D <br /> -g and Tp IS <br /> � � , ,Ar�l� sA <br /> CPPB, re ,Fere detected i11 _ MPLEs <br /> Parted as micrograms 'I at ca <br /> concentrations r per liter) ncentratzans of 3,000 <br /> ones _ ranging tom l respectivel &� and 9,600 parts r <br /> ample, fW-2 (be' <br /> zene y'°BrE per billion , r <br /> in'moriitarin , at a cancer I7Pb )'to 360 Fere also detected iii MW_ y <br /> 'a g wells MW. tration of5I0 PPb Cxylenes) MTB I at <br /> 1esultsofthe 2,A4W 3 orM ,'ppb. No<otherpetroleum h E was detected'jn only <br /> 72584 725$ ound Fater sanxples are s during the J ydrocarbons <br /> and c1i' manzed in TY !997 Sp1,n were detected <br /> ain-af-custody fo able 6 g even � n <br /> xni are - Tlie laboratory The analYtica! ; w <br /> incl <br /> I uded�n APPendix'B ' Teport C ?AI I D Nos f <br /> 4 e s s • r <br /> 1 n <br />