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ENVIRO"ENTAL HEALTH%PARTMENT <br />'O Pp UCO <br />c�VA, Donna K. Heran, R.E.H.S. <br />Director <br />Laurie A. Cotulla, R.E.H.S. <br />c4�Fo'R�P Assistant Director <br />February 13, 2007 <br />Mike Brown <br />Vernalis Partners <br />P.O. Box 1429 <br />Lathrop, CA 95330 <br />SAN JOAQUIN COUNTY <br />304 East Weber Avenue, Third Floor <br />Stockton, California 95202-2708 <br />Telephone: (209) 468-3420 <br />Fax: (209) 464-0138 <br />Website: www.sjgov.org/ehd/ <br />Program Coordinators <br />Carl Borgman, R.E.H.S. <br />Mike Huggins, R.E.H.S., R.D.I. <br />Margaret Lagorio, R.E.H.S. <br />Robert McClellon, R.E.H.S. <br />Jeff Carruesco, R.E.H.S. <br />Kasey Foley, R.E.H.S. <br />Sent by Fax and Certified Mail <br />Re: Postclosure 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 plan 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 http://www.ciwmb.ca.gov/leacentral/CIA/ 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, REHS <br />Environmental Health Department <br />cc: Raymond Hoo, San Joaquin County Community Development Department <br />cc: Jon Macanas, California Integrated Waste Management Board <br />.4 lf�— Page 1 of 1 <br />