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------------ <br /> ENVIRONMENTAL HEALTH I)EPARTMENT <br /> A�U.lN <br /> c SAN JOAQUIN COUNTY <br /> '(90? pG <br /> - Donna K. Heran, R.E.H.S. Program Coordinators <br /> Director 304 East Weber Avenue,Third Floor Carl Borgman, R.E.H.S. # <br /> r <br /> Laurie A. Cotulla, R.E.H.S. Stockton, California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. <br /> cti �:. Y `P Assistant Director Margaret Lagorio, R.E.H.S. <br /> �,6 Telephone: (209)468-3420 Robert McClellon, R.E.H.S. <br /> Fax: (209)464-0138 Jeff Carruesco, R.E.H•S. <br /> Website:www.sjgov.org/ehd/ Kasey Foley, R.E.H.s. <br /> JAN THOMPSON MAR 0 8 2007 <br /> WILBUR ELLIS COMPANY <br /> P O BOX 1286 <br /> FRESNO CA 93715 <br /> RE: H &H Engineering and Construction Facility SITE CODE. 507797 <br /> 212 Industrial Drive RO: 623 <br /> Stockton, California 95206 <br /> San Joaquin County Environmental Health Department (EHD has reviewed Second'Semi- <br /> Annual 2006 Groundwater Monitoring and Sampling Report and Request for Case Closure, <br /> dated January. 3, 2007, prepared by Ground Zero Analysis, Inc. (Ground Zero) on your <br /> behalf. .In this report Ground Zero presented analytical data for groundwater samples <br /> collected from monitoring well MW-3. Groundwater samples were not collected from <br /> monitoring wells MW"I and MW-2 because the well boxes were covered with water from <br /> recent rain storms. <br /> Before EHD will consider this site for closure, you are directed to collect groundwater I <br /> samples from monitoring wells MW-1, MW-2, and MW-3 during the first quarterly <br /> groundwater monitoring event in 2007. Groundwater samples are to be analyzed for total <br /> petroleum hydrocarbons as gasoline (TPH-g); benzene, toluene, ethyl benzene, total xylenes <br /> (BTEX); and 1,2-dichloroethane (1,2-DCA). Based on these groundwater results, EHD will <br /> determine whether additional sampling events are necessary or whether case closure is <br /> appropriate. <br /> If you have any questions regarding this letter please contact Vicki McCartney at (209) 468 <br /> 3 45 6, or by e-mail at vmecartney@sjcehd.com <br /> Donna Heran, REHS, Director <br /> Environmental Health Department i <br /> { <br /> Victoria L. McCartney, Senior.RENS Nuel C. enderson, Jr., PG <br /> Unit 1V-Site Mitigation Engineering Geologist <br /> Unit IV- Site Mitigation <br /> C:, Gregory P. Stahl, PG—Ground Zero <br /> James L.L. Barton, PG--CVRWQCB <br /> 1 <br /> } <br />