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"k N �Y " <br /> i _ x yr 1 aF tw�3, - r tuy E <br /> RESNA WATERWORK CORP. <br /> INDUSTRIES <br /> p•. <br /> July 29, 1991 <br /> E <br /> NUG <br /> Rn , 1 <br /> 1,g <br /> FSM fN� ,91 <br /> Mr. Steve Schneider '�y ,,fy'tiL jar <br /> San Joaquin County Public Health Services 4 �' <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95203 <br /> Re. Site Code: 1028. 1991 Third Quarter Report, Stephens <br /> Marine, 4950 West Brookside Road, Stockton, CA <br /> -" Dear Mr ' Schneider: <br /> .� This letter report summarizes the activities at Stephens Marine <br /> ;r. (Figure 1) during the third quarter of 1991. Activities during the <br /> " <br /> quarter included sampling groundwater for dissolved hydrocarbons <br /> and monitoring groundwater levels. <br /> Groundwater monitoring data collected in July reveals a constantly <br /> M1ra fluctuating water elevation and gradient due to changes in river r <br /> (Tables l & 2). The groundwater gradient map (Figure 2) shows an <br /> average gradient of 0.01 foot per feet or 52.8 feet per mile, and <br />:R. varying from south to southeast. <br /> Groundwater samples were collected from the three wells on July 2, <br /> '< 1991, for analyses of benzene, toluene, ethylbenzene, xylenes <br /> (BTEX), and total petroleum hydrocarbons as gasoline and diesel <br /> (TPHG & TPHD), by EPA methods 8020/8015. Applied Analytical (DOHS <br /> #1211 ) performed tpe_ analyses of all samples �T'h�sloratory <br /> ahaly ` iia t iod detecti+vn � aitits in weY1 <br /> Yr Md ks»^F f.yrrwc�rr';rrGii+1..eP• .i4drfa;,tl,`,"a5e:`4 Mrvm' : ,r.i+3..Fy..-. <br /> i MW ;� 1W 'a3 . The laboratory reports and chain-of-custody <br /> documentation are presented in Attachment 1. <br /> S <br /> s <br /> F <br /> �'• 9MLR0724.vp <br /> i <br /> i <br /> 1710 MAIN STREET • ESCALON,CA 95320 0 (209)$3$-3507 <br /> 2350-A WALSH AVENUE • SANTA CLARA,CA 95051 • (408)496-1249 <br />