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7 <br /> (See Table 11). <br />' TABLE 11 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (12-31-92) <br /> .2: :.:S:�:ii:Y::��:? j:;::i;';;:�: y�}����a +��{ /�/�, �1I� S n:C:i.:C: :•}'I.P'�::r'v't'i <br /> ,o-:y.:.r^ ....^'�;::;2V.::::o-v:..,::r;:a:::+>:::::>::::.a:-.•.s}i� 1'�I�4:i�� Ai�fh1f. <br /> !;W.W�4i!, �:yy:ii����� ■{{{ !F�� <br /> iF�1�w �101�<i�:�':r:.:: }:}S•:i is}Y}: :.t:j <br /> ^:' <br /> (: <br /> .�i}�? :?E3?;•..: f:`o::: Ei- .: �"�i'`•� Vik...�.::�->r J•,4, <br /> :......... <br /> . ............ ........................::.:::.::::.�:::..�::•�:::�::.::�::.:::.::.::..�..:�:.�::.t�:.:�-:,.;�...-}}:<...........k.....r........-..:......:....<c:}:.::.:..:::..k.}:.:. .:.:at�.,.rr.,.,u;k:::;:.:t i•::.,.:.tkk}r+.i:i <br />' Benzene NO 0.5 55.0 39.0 0.3 NO NO NO 1.4 <br /> Toluene NO 0.5 15.0 10.0 NO NO NO NO 0.3 <br />' E-benzene 1.4 NO 30.0 44.0 NO NO NO NO 2.3 <br /> Xylene 1.6 NO 15.0 46.0 NO NO NO NO 3.3 <br /> TPH-Oee 78,0 50.0 1580.0 1600.0 NO NO NO NO 70.0 <br />' Sun Tech sampled monitoring wells 6, 9, 10, 11, 12, and 13 on April 1, 1993, and <br /> monitoring wells 7, 8, and EW-1 April 9, 1993. MW-1 through MW-5 were dry, and <br />' therefore not sampled. Representatives of the County and Regional Board were <br /> on-site to observe, and to collect split samples for analysis. The Sun Tech samples <br /> were analyzed by Geokem Mobile Labs, Modesto, California, a California certified <br /> laboratory (DOH Certification No. 1873), for 601, 602, EDB, STLC-Pb, and <br /> TPH-gasoline (Table 12). <br /> TABLE 12 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (4-1-93 and 4-9-93) <br /> <>s :<:»>> <br /> i <br /> :.>::... <br /> i <br /> Benzene NO ND 4.8 5.8 130.0 NO ND NO 90.0 <br /> Toluene ND NO 4.9 3.9 1.6 NO ND NO 4.5 <br /> Xylene NO NO 30.0 23.0 NO NO NO ND 150.0 <br /> Efieezene NO ND 14.0 13.0 NO NO ND NO 86.0 <br /> TPH-Oee NO ND 650.0 400.0 ND NO ND ND 2700.0 <br /> i <br /> 2.0 CURRENT GROUNDWATER MONITORING <br /> Sun Tech sampled monitoring wells 6, 7, 8, 9, 10, 11, 12, 13, EW-1 and the newly � <br /> installed MW-14, on June 30, 1993. MWA through MW-5 were dry, and therefore not <br /> I sampled. The samples were analyzed by a California certified laboratory (Sherwood <br /> Labs Corp.) using EPA methods for 601, 602, and TTLC for lead (Note: methods 601 <br /> and 602 include all required analyses). See Table 13 and Appendix A. <br /> v I <br />