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PUBLIC HtALTH SERVICE FILE Copy <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst M.D. <br /> 304 East Weber Avenue, Third Foo Health Officer <br /> Stockton, CA 95202 • ` <br /> 9� FOR NSP <br /> 209/468-3420 <br /> NOV 14 2000 <br /> HAROLD & DENA KNOWLES <br /> C/O PATRICK RIDDLE ROEK BROTHERS <br /> 7574 SHORELINE DRIVE DON ROEK <br /> STOCKTONCA 95219 P O BOX 30038 <br /> STOCKTON CA 95213-0038 <br /> RE: 102 S. Wilson Way <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has been contacted by your consultant, Ground Zero Analysis, Inc. <br /> concerning quarterly monitoring requirements for the above referenced site. <br /> The next quarterly monitoring event should include groundwater sampling from <br /> monitoring wells MW1 through MW13 and vapor wells VW1 through VW6. <br /> Analysis of the water samples should be for total petroleum hydrocarbons as <br /> gasoline, benzene, toluene, ethylbenzene, xylenes, 1,2 dicloroethane, ethylene <br /> dibromide, methyl tert-butyl ether, ethyl tert-butyl ether, di-isopropyl ether, tertiary <br /> amyl methyl ether, tertiary butyl alcohol, methanol and ethanol. <br /> Reducing the number of site monitoring wells being sampled and the <br /> contaminants to be analyzed has been requested by your consultant. In the <br /> report of the results of this quarterly monitoring event please include the <br /> proposed sampling and analytical reductions and the site specific rationale for <br /> the reductions. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> � <br /> v <br /> Margaret Lagorio, Supervising REHS <br /> Unit IV <br /> C: Ground Zero Analysis, Inc. — Greg Stahl <br /> CVRWQCB — Marty Hartzell <br /> A Division of San Joaquin County Health Care Services <br />