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ENVIRONMENTAL HEALTM)EPARTMENT <br /> � SAN JOAQUIN COUNTY <br /> 2 y Donna K.Heran R.E.H.S. Unit Supervisors <br /> ,«. \ `r X Director 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> - Stockton, California 95242 Mike Huggins,R.E.H.S.,R.D.I. <br /> <• Al Olsen,R.E.H.S. <br /> Program Manager Douglas W.Wilson,R.E.H.S. 1 <br /> �rFaad Laurie A.Cotulla,R.E.H.S. Telephone: (209) 468-3420 Margaret Lagorio,WE.H.S. <br /> Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> JAY JAHANGARI j <br /> PORT OF STOCKTON <br /> P O BOX 2089 <br /> STOCKTON CA 95201 <br /> RE: Port of Stockton <br /> Site 3,Port Roads 13/14&G <br /> Stockton,CA <br /> WORKPLAN: Addendum to Work Plan for Assessing Lateral and Vertical Extent of Petroleum <br /> Hydrocarbons in Soiland Groundwater DATED: 2/5/02 <br /> PREPARED BY: Geomatrix <br /> APPROVED X 1 <br /> DISAPPROVED ❑ <br /> ADDENDUM ❑ Submit by: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S 25299.37,subd.(c)(3).): <br /> 1. Installation of up to six soil borings,to be drilled as needed based on field screening and/or analytical <br /> results. Collection of soil samples and water samples. <br /> 2. Laboratory analysis of soil and water samples for total petroleum hydrocarbons and BTEX. <br /> COMMENTS AND CONDITIONS: <br /> 1. Soil samples must be collected for lithological description from 10feet below surface grade{bsg)to the <br /> total depth of the borings. <br /> 2. Discrete water samples must be collected-from 20 fee t(bsg)and at the depth of the soil borings. <br /> 3. Central Valley Regional Water Quality Control Board is requiring analysis for 1,2-DCA and this analysis <br /> has not be performed at this site. Water samples should be analyzed for 1,2-DCA using EPA Method <br /> 8260. <br /> 4. Notify EI-1D at least 48 hours prior to the proposed scheduled work dates. <br /> DATED b oZ- BY <br /> Ce: CVRWQCB—Marty Hartzell <br /> Geomatrix--Philip Ross <br />