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PUBLIC HEALTH SERVICES Q¢4�� �o <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer P <br /> Pb. Box 2009 (1601 East Hazelton Avenue) • Stockton, Califomia 95201 <br /> (209) 468-3400 <br /> cc <br /> I '` V <br /> STELLA RUIZ <br /> 4491 W DURHAM FERRY RD DEC 3 0 1992 <br /> TRACY CA 95376 <br /> RE: Ruiz Grocery SITE CODE: 1551 <br /> 4491 West Durham Ferry Road <br /> Tracy CA'; 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has reviewed correspondence dated December 14, 1992 and prepared by Delta <br /> Environmental. PHS/EHD has the following continents for your consideration. <br /> The request to discontinue sampling of monitoring wells, MW2 and MW3, is denied. At <br /> minimum MW1 should be sampled quarterly and MW2 and MW3 should be sampled <br /> semi-annually. Static water measurements should be collected quarterly to determine <br /> groundwater gradient. <br /> Quarterly monitoring of the site is overdue. The last quarterly monitoring event occurred <br /> July 10, 1992. Please schedule the fourth quarter monitoring event by <br /> January 6, 1993. <br /> If you have any questions, please contact Mary Meays, REHS, of my staff at <br /> (209) 468-0337. <br /> Jogi Khanna, M.D., M.P.H. <br /> Health Officer m, <br /> r <br /> A. Cotulla, REHS, Program Manager <br /> mental Health Division <br /> LACNM:lb <br /> c: Elizabeth Thayer, CVRWQCB <br /> c: Leah Goldberg, Neumiller and Beardslee <br /> c: James Brownell, Delta Environmental <br /> a <br /> A Division of San Joaquin County Health(arc Services <br />