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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQIN COUNTY <br /> --w >G Unit Supervisors <br /> _ t•,? donna K.Heran R.E.H.S. <br /> 304 East Weber venue, Third Floor Carl Borgman,R.E.H.S. <br /> t <br /> Direcor <br /> Mike Huggins,R.E.H.S.,R.D.1. <br /> •'. Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> �•- „Foa'o Program Manager -3420 209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulia,R.E.H.S. <br /> Program Manager Fax: (20)) 464-0138 Robert McClellon,R.E.H.S. <br /> Mark Barcellos,R.E.H.S, <br /> CAL-TRANS DISTRICT 10 <br /> PO BOX 2048 FILE COPY <br /> STOCKTON CA 95201 <br /> SAIYED S ALI <br /> RE: Tracy Maintenance Station <br /> 2005 Krohn Rd. <br /> Tracy, CA. 95370 <br /> WORK PLAN: "Leach field Site Investigations' DATED. May 7,2002 <br /> PREPARED BY: Martha Adams, Shaw,Environ^ ental <br /> STATUS: APPROVED (with conditions listed below <br /> ADEQUATE AND.NECESSARY ELEMENTS OF THE WORK PLAN: <br /> • Install up to four (4) push points to •--25' bgs and collect soil and groundwater <br /> samples at 5' intervals and analyze for colnstituents listed in paragraph 4.4 of <br /> work plan and, <br /> • Properly containerize and dispose of waste generated by procedures and, <br /> • Prepare and submit a report of findings to EHD. <br /> COMMENTS AND CONDITIONS: <br /> • Collect and analyze a `sludge' sample from inside one or more of the leach <br /> lines, using_TCLP to initially screen for�ontarninants of concern and, <br /> i <br /> • Provide justification for soil boring "B-1" proposed to 40'bgs (,well into <br /> saturated zone) and, <br /> • Include detailed and full historical bac round information of leach field <br /> installation and use and, <br /> • Provide current and historical groundwaer flow directions. a <br /> 4 <br /> REASONS FOR DISAPPROVAL OF THE W RK PLAN: <br /> • None. <br /> DATED: May 23, 2002. BY• <br /> c I ✓� <br /> Michael�Infu , Senior REHS (209) 468-3454 <br /> /3F,.,d to consultant: _5Z� 4 IL- <br /> A <br /> /-. <br />