SITE INFORMATION AND CORRESPONDENCE

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well. However, the scaled map that accompanied the recently submitted addendum placed this monitoring well some one hundred: nd forty feet north of the former tank pit area,..on an adjacent property. The addendum recommends that "four additional soil borings should be installed at the site by the procedures outlined in the Work Plan Addendum prepared-for this site, dated .06 ,lune 1597". The procedures outlined in the Work Plan Addendum 0f June 1997, for work that was completed on June 24, 1997, said a .i "Geoprobe rhaerasoil sampling assembly and a four-foot Teflon sleeve"would be.usedo. continuously collect soil samples. Is it the intention and/or , recommendation of Advanced Geo Environ mental, Inc. that the next phase of work at this site wili'be using.bath a ponventional hollow stem:auger drill rig, far th installation of:the fn hitoring well, and a Geoprobe unit,=for the additional soil: borings PHSIEHD agrees that the soil borings in this next phase of work should include contihuou.$1 pore sampling. The first boring, which should beplaced irrtrnediaWy° q :north of the excavatiorti area, between BJ-4 and B-5, should be drilled to at least. 85 feet.bsg to obtain soil.samples and a water sample for vertical definition of tire. contaminan#pii me Submit to PHS/EHD by January 15, :1.999a detailed, up t d te=in ork pian o complete the vertical and lateral assessment of the extent of the petroleum :. hydrocarbon contamination at this site. Include in the work plan.an up to date site specific Health and Safety Plan. Please note that this work plan:was r 1 originally requested onbctober 8, 1998 and was to be submitted to PHSIEHD by November 20,1998. If you have any questions call Lori Duncan at (209) 468-0337. Donna Heran, REHS Director, Environmental Health Division Lori Duncan, REHS Marga t Lagorio, HS Site Mitigation, Unit IV Supervisor, Unit IV ; :cc:" Mark List, CVRWQCB ':Bob Marty, AGE }