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f <br /> r <br /> PUBLIC HEALTH SER.VIC"S <br /> OU'N <br /> �O. COG <br /> SAN JOAQUIN COUNTY =~ n <br /> ENVIRONMENTAL HEALTH DIVISION <br /> ' Karen Furst, M.D., M.P.H., Health Officer <br /> ZIP <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 <br /> 209/468-3420 <br /> MAR 0 9 2001 <br /> ' PHILLIP ELDER/JAY QkDDOIIRA RE V EI-V <br /> ED <br /> RAINWATER CARWASH <br /> 420 W YOSEMITE MA` <br /> MANTECA CA 95337 <br /> RE: RAINWATER CARWASH SITE CODE: 231458 <br /> ' 420 W YOSEMITE AVE <br /> MAN'TECA CA 95337 <br /> ' A meeting was held at San Joaquin County-Public Health Services,Environmental Health <br /> Division (PHS-EHD) conference room on March 7,2001. Present at the meeting were you, <br /> Herb Boynton,Ron Van DePol,Tim Cuellar and Bob Many representing Advanced <br /> GeoEnvironmental,Inc. (AGE),Marty Hartzell representing Central Valley Regional Water <br /> ' Quality Control Board (CVRWQCB), and Margaret Lagorio,Dot Lofstrom, and Jeffrey <br /> Wong representing PHS/EHD. <br /> tSoil and grab water samples were collected at various depths from Cone Penetrometer <br /> (CP'I) borings in December 2000. CPT boring P-7 was advanced about 20 feet south of the <br /> ' former underground storage tank(UST) excavation. P-8 was advanced immediately north of <br /> the UST excavation. P-9 was advanced at about 90 feet northeast of the excavation, and P- <br /> 10 was advanced 100 feet to the north on the other side of West Yosemite Avenue. <br /> ' Analytical results of some of the grab water samples reported in Core Per�Testing Site <br /> bzrstig-itiorzdated February7,2001 prepared by-AGE are as follow: <br /> ' Grab Water Sam les in µ /1 TPH-g MTBE (EPA 8260) PCE (EPA 8260) <br /> P-7@ 101'to 104'bs 590 ND QO j 1,600 <br /> P-7 @ 129'to 132'bs 160 15 330 <br /> ' P-8 @ 112' to 115' bs 500 47 1,400 <br /> P-8 @ 134'to 137 bs 290 39 920 <br /> P-9 @ 83' to 86' bs ND 60 ND Q5 930 - <br /> P-10 <br /> 30P-10 @ 29'to 32' bs g 1 520 ND Q5 450 <br /> P-10 @ 82' to 85' bsg 1 340 ND Q5 990 <br /> 4g/1 (micrognats per liter);MTBE (methyl ten butyl ether);PCE (tetrachloroethene) <br /> ' Based on the CPT grab water samples results,the ground water plume has not been defined <br /> vertically or horizontally. Gravelly loose sand layers have been reported based on CPT <br /> ' soundings at approximately 25 to 45 feet,70 to 75 feet, 82 to 90 feet,and 130 to 150 feet bsg <br /> depth. The report categorized these units as First Water Zar,Semnd Water Zwa; 777i?d Water <br /> Zorr; and PmnrryAquoer Zorx. It is unlikely that there are any true confining barriers between <br /> these water zones. It is also unknown if there are any drawdown effects resulting from <br /> pumping of local municipal water wells. <br /> A Division of San Joaquin County Health Care Services <br />