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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> .o <br /> Donna K. Reran, R.E.H.S. Program Coordinators <br /> ` Director 304 East Weber Avenue,Third Floor Carl Borgman,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. Stockton,California 95202-2708 Mike Huggins,R.E.H.S.,R.D.I. <br /> °i�ikd"a��P• Assistant Director Telephone: (209)468-3420 Margaret Lagorio,R.E.H.S. <br /> 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 /> February 13, 2007 Sent by Fax and Certified Mail <br /> Mike Brown <br /> vernalis Partners COPY P.O. Box 1429 <br /> Lathrop, CA 95330 <br /> Re: Postelosure Land Use at the Windeler Ranch Glass Disposal Site (39-AA-0012) <br /> Mr. Brown, <br /> A quarry excavation application(PA-0600418 (QX))was filed with the San Joaquin County Community <br /> Development Department. The project site is located on the east side of Mossdale Road and includes the <br /> property at 640 W Mossdale Road(APN 239-030-09),a closed disposal site identified as the Windeler <br /> Ranch Glass Disposal Site. The disposal site operated from 1966 until 1982. <br /> The EHD reviewed the quarry excavation application and determined that a site investigation should be <br /> done before the start of the quarry operations pursuant to Title 27 California Code of Regulations §21100. <br /> The exact location and composition of the disposal site waste is not known and the quarry excavation may <br /> uncover the disposal site waste. Therefore, a site investigation is necessary to determine the horizontal <br /> and vertical extent of the disposal site waste and identify the waste characteristics. <br /> The major components of the site investigation work plan should include the: project objectives, sampling <br /> plan, documentation and reporting, health and safety plan, and hazardous material(HazMat) and <br /> unexploded ordinance(UXO) response. <br /> The EHD recommends that the site be"clean closed"in accordance with a clean closure pian approved by <br /> the EHD. Clean closure is the complete removal of all waste and waste residuals, including contaminated <br /> soils. A clean closure is generally defined as being when waste materials and residuals are removed to a <br /> point where remaining contaminant concentrations are at or below background levels or levels established <br /> by the relevant regulatory agencies. See hgp://www.ciwmb.ca.eov/leacentraUCIA/for more information. <br /> Submit a site investigation work plan or a clean closure work plan to the EHD within 60 days of <br /> receipt of this letter. If you have any questions regarding this matter,you can contact me at(209)468- <br /> 2986. <br /> Garrett Backus, RENS <br /> Environmental Health Department <br /> cc: Raymond Hoo, San Joaquin County Community Development Department <br /> cc: Jon Macanas, California Integrated Waste Management Board <br /> 1!�— Page 1 of 1 <br />