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PUBLIC HEALTH SERVICES �o= <br /> SAN JOAQUIN COUNTY c � <br /> JOCI KHANNA M,D_M.P H <br /> Health Officer <br /> c <br /> 9IIF <br /> P.O. Box 2009 0 (1601 East Hazelton Avenue) 0 Stockton, California 95201 6 it <br /> (209) 468-3400 <br /> MIKE LESCISIN <br /> DIAMOND WALNUT <br /> P 0 BOX 1727 SEP 2 8 1992 <br /> STOCKTON CA 95201 <br /> RE: 1050 Diamond St. SITE CODE: 1781 <br /> Stockton, CA <br /> Diamond Walnut Growers <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed <br /> the review of the document entitled "Technical Summary and Report of First Quarter Monitoring" dated <br /> June 10, 1992 prepared by Resna. <br /> We propose to you that all 3 monitoring wells be sampled during the next quarter activity rather than <br /> Resna's recommendation of only sampling monitoring well #3. Resna has suggested that should future <br /> sampling not detect chrome concentrations in excess of the State Maximum Contaminate Level (MCL), a <br /> request for closure will be made to this department. <br /> Due to a slight increase in the groundwater elevation during the fust quarter sampling period, it is our <br /> experience with technical evaluations with Central Valley Regional Quality Control Board (CVRWQCB), <br /> that the full sampling of all the monitoring wells will provide the greatest degree of groundwater data <br /> for their subsequent evaluation. <br /> Elizabeth Thayer, of the CVRWQCB has requested that copies of previous field reports and quarterly <br /> reports be submitted to her for concurrent evaluation. <br /> If you have any questions or wish to schedule advance notification for our oversight for the next quarter <br /> sampling, please contact Diane Hinson, Supervising RENS, at (209) 468-3452. <br /> Jogi Khanna, M.D., M.P.H. <br /> Health"Of%firer <br /> urie A. Cotulla, REHS, Program Manager <br /> Environmental Health Division <br /> LAC/DH:lb <br /> c: Beth Dorris, Tuttle & Taylor <br /> c: Sharon Young, Resna <br /> c: CVRWQCB - Beth Thayer <br /> A Division of W lmquin Counry Health Xmcm <br />