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• able 1 01 - <br /> Historical Groundwater Depths/Elevations J <br /> and Analytical Testing Results ' <br /> proposed ARCO aWprn Facility YWNE <br /> Tracy, California <br /> 0j 1�+{=.a a }y it V, Y- f ^s a Rio • ' ` '�• -.. <br /> w� y 2 w aka` s AX }9 a co- ¢ r ti <br /> R d U.' <br /> �r } ]! .c � ^.i at 3 "` '�" � `1d'G �^ �•�`' � �l.'F Y 4tilAp�i� >``�t s"J'`s � �GRc> t JlQtla�Pr' " '�Y}w��'t4�'��`^" V t � <br /> ,i1a X'Y"0$ lyl� <br /> _ VAI <br /> } fff��� s •k•£ l <br /> }� 9f...- b bn d}^%' � J S Y ��a$�� . 'lam.t< "ey Kw 2 Y F sro�A��V{�� Y-v— <br /> J.Vt Kf � J R �L,�, k�n/Yn Y fiT'h t"^R'-'tf f~{Tjuv�'��A',E+ C'�il{t)�J+ ay,{ <br /> S Ln �t ''W w <br /> 05/27117 8.89 1478 --- NDte 2,0 ND ND ND ND ND <br /> MW-1 2367 06/24117 9.05 1462 -016 ND ND ND ND ND ND ND <br /> 0719197 915 1452 -010 ND ND ND ND ND ND ND <br /> 05/2Z97 805 1495 --- ND ND ND ND ND ND ND <br /> MW-2 23 0a 06/Z4197 825 1475 -023 ND ND ND ND ND ND ND <br /> 07109197 836 1464 -011 ND ND ND ND ND ND ND <br /> 0ST�2197 910 1419 --- ND 0.72 ND ND ND ND ND <br /> MW-3 2329 06/24197 926 1403 -016 ND ND ND ND ND ND ND <br /> 07109/97 9.38 1391 -012 ND ND ND ND ND ND ND <br /> 05f2W 934 14.39 --- ND 061 ND ND ND ND ND <br /> MW-4 2373 06/JW 9.50 1433 -016 ND ND ND ND ND ND ND <br /> 07/09/97 961 1412 -011 ND ND ND ND ND ND ND <br /> t rra�}Si,. 9 ., Sr'fif� `'��7 " <.-rpt, " ,� '{ a;G r+/►<,�}} S ft �n i� 7t <br /> r,Y +>,.wa n0>"T+`,`f a �{ ,J t' `,C .2r: „ ^4� 1,i`v'w�" _'N..'ll "tf Fi �'\ror-£i.i>zt "5 ros.,h „'{ 5� `Y•74 .�V VQ 0.60 1V <br /> c w <br /> .>tr :� <br /> �-' a 35 <br /> Well elevations surveyed relatrve to the top of casing for rnomtortng well MW-2. The top of casing elevation of MW-2 was assigned an arbitrary bench mar <br /> elevation of 23.00 feet above mean sea level(extrapolated from the US Geological Survey,7 5 Minute Serres,Topographic Map,Union Island Quadrangle,1978 <br /> m GW - Groundwater <br /> nr VFHs -Volatile Fuel Hydrocarbons,quantitated against a gasoline standard Hydrocarbons detected by this method range from C6 to C12 <br /> (+} µg/L- micrograms per Liter (parts per billion[ppb]) <br /> (s) EFHs - Extractable Fuel Hydrocarbons,quantitated against a diesel fuel standard Hydrocarbons detected by this method range from C8 to C40 <br /> tat mg/L- milligrams per Later (parts per million [ppm)) <br /> m MTBE-Methyl Tert-Butyl Ether <br /> {°r ND -Not Detected, below laboratory method detection limits (MDLs) <br /> I <br /> Page 1 of 1 <br />