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Department of Toxic Substances Control <br /> Linda <br /> Maureen F. Gorsen, Director ArnoldSAdams 8800 Cal Center Drive chwartene gger <br /> Secretary for Governor <br /> Environmental Protection Sacramento, California 95826-3200 <br /> February 20, 2007 'nil�-Ek E WrED <br /> FEB 2 9 2007 <br /> Ms. Dorothy Haley ENVIRONMENT HEALTH <br /> 1311 Madison Avenue PERMIT/SERVICES <br /> Tracy, California 95376 <br /> SECOND WORK PLAN ADDENDUM, PRELIMINARY ENDANGERMENT <br /> ASSESSMENT FOR HALEY FLYING SERVICE, TRACY, CALIFORNIA <br /> Dear Ms. Haley: <br /> The Department of Toxic Substances Control (DTSC) has reviewed the Work Plan <br /> entitled "Second Addendum to Work Plan, Preliminary Endangerment Assessment <br /> Former Haley Flying Service 21,000 Paradise Road, Tracy, California Cal-Site # <br /> 39070037" dated February 5, 2007. DTSC approves the work plan and directs its <br /> implementation as provided in the Haley Flying Service, Voluntary Cleanup Agreement, <br /> Docket Number HSA-A 04/05-170 (VCA). DTSC expects that drilling and field sampling <br /> activities will commence on March 15, 2007. In accordance with the VCA, if field <br /> activities are to be rescheduled, please provide written notice of the new scheduled field <br /> activities at least seven (7) days prior to the commencement thereof. If access to off- <br /> site sampling areas is restricted or denied, please notify this office immediately. <br /> If you have any questions, please call me at (916) 255-3749. <br /> Sincerely, <br /> Eric L. W g <br /> Project Manager <br /> cc: Mr. Steve Lankford, R.G. <br /> Geo-Phase Environmental <br /> 2937 Veneman, #13240 <br /> Modesto, California 95356 <br /> 0 Printed on Recycled Paper <br />