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ENVIRONMENTAL HEALTH DEPARTMENT <br /> Q <br /> SAN JOAUIN COUNTY <br /> Unit Supervisor <br /> Donna K.Heran,R.E.H.S. <br /> Director Carl Borgmaq R.E.H.S. <br /> 304 East Weber Avenue' Third Floor <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,Manager <br /> Stockton, California 95201 Douglas W.Wilson,R.E.H.S. <br /> .6.. 'i• Program Manager Telephone: (209) 468-3420 �nFl� Margaret Lagorio,R.E.H.S. <br /> 9� FOR�` A. <br /> Laurie og am Ma,R.E.H.S. Fax: (209)464-0138 �I/lw �Q1�'ert McClellon,R.E.H.S. <br /> Program Manager 2 s� Mark Barcellos,R.E.H.S. <br /> March 22, 2002 ��mm�n�yue�eopti�� e . <br /> TO: San Joaquin County <br /> Community Development Department <br /> FROM: Public Health Services <br /> Environmental Health Division <br /> CONTACT PERSON: Raymond Borges, Lead Senior R.E.H.S., R.D.I. Da <br /> PHONE NUMBER: (209) 468-3284 <br /> CC: Mike McGrew, County Counsel <br /> Donna Heran,Director, Environmental Health Department <br /> RE; GP-01-13 & ZR-01-09,Attention Leanne Mueller <br /> 12833 South Manthey Road,Lathrop <br /> The San Joaquin County Environmental Health Department has reviewed the Soil <br /> Suitability/Nitrate Loading Study for the General Plan Amendment and Zone Reclassification <br /> concerning the 34+acres site. The study does identify that this site does contain elevated levels <br /> of nitrate (168-224 ppm) in the first aquifer. The study does suggest that the soil on this site can <br /> contribute to some denitrification of sewage effluent. <br /> In addition,there is currently ongoing soil and groundwater monitoring related to historical fuel <br /> tank leaks that are being regulated by California Regional Water Quality Control Board <br /> (CRWQCB)on this site. Any development on this site cannot impact that ongoing <br /> characterization and remediation activity in the future until cleanup has been completed. Any <br /> building upon this site will require approval from the CRWQCB. <br /> The use of future wells for this site Will have special construction requirements and testing <br /> requirements in accordance with San Joaquin County Well Standards and the California Safe <br /> Drinking Water Act. <br /> Environmental Health Department will need to evaluate each proposed development on this site <br /> prior to issuance of building permits in order to determine that the development will fall within <br /> the study's guidelines. <br /> Environmental Health Department can support the proposed General Plan Amendment and Zone <br /> Reclassification; however, future projects will require further Soil Suitability Studies and <br /> possible mitigation measures(i.e.: Package Wastewater Treatment System). <br />