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Mal <br /> r: 1386 EAST REAMER STREET <br /> V�EGE <br /> FS TERN WOODLAND, CA 95659-9603. v,-._ <br /> �--® GEG-L_NGINEERS FAX(916)662-0723 <br /> :t CALIF.CONTRACTOR#513857 A CORPORATION (916) 668-5300- <br /> REGISTERED <br /> 68-5300_REG1STERED GEOLOGISTS <br /> FEB 2 51911 <br /> Mr. John Margowski E(�1f1f2C,N�?Ei�! ALki Nary 24, 1991 _ <br /> Wickland Properties f' R{t4����C,,1�.=� <br /> 1765 Challenge Way <br /> Sacramento, Ca. 95814 <br /> (916) 921-1100 <br /> FAX (916) 921-3510 <br /> RE: Update Assessment and Status Report #5 including the results,.._ <br /> of the vapor recovery pilot test and monitor well slug tests with <br /> the October-November-December, 1990, quarterly monitoring at._ .... ... <br /> former Regal Station 604, located a 1448 N. E1 Dorado Street, m - „-, . <br /> Stockton, California. <br /> Dear Mr. Margowski: <br /> The following is the update of events that have occurred at this <br /> site since Update Status Report #4-September, 1990. <br /> LOCATION <br /> Regal Station 604 (parcel # 139-020-081' is located at 1448 N. Eli <br /> Dorado and Harding Way, Stockton, San Joaquin County, California. : <br /> The site is in projected section 2; TIN; R6E; MDB&M at <br /> approximately 14 feet above mean sea level. Initial drilling' <br /> (November, 1989) encountered ground water at approximately 32 feet . _: _ <br /> below sea Level (471 below the surface) and flowing in an east to' <br /> southeasterly direction, see figures 1, 2, and 3A. ; <br /> UPDATE STATUS REPORT #4 (SEPTEMBER, 1990) CONCLUSIONS AND <br /> RECOMMENDATIONS: <br /> CONCLUSIONS <br /> The results :of ground water monitoring, August 24, 1990,,Iindicate. <br /> that ,,the, ground water. has dropp?d approximately eight feet ..since. : <br /> early Januar _Y, 1990, and, .is:. flawing_:..predominately `; to - the.- <br /> southeast. <br /> he southeast. Chemical . results o€ .the water samples taken from the <br /> monitor wells show contamination of the groundwater with`.:gasoline ..' <br /> range hydrocarbons. <br /> Soil contamination is limited between the 20-40 foot depths <br /> = beneath the eastern and western pump island areas and between the <br /> - — 30-40foot--depths—southeast.of the tank excavation. -.- This- - - ----- <br /> contamination is.of aged gasoline range hydrocarbons. <br /> page 1 <br /> -1 Emil I <br />.e,.`. <br />