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r *. <br /> _ <br /> GE0-PH- ,­A,oSEY'-",, <br /> ENVIRONM �FNIT � <br /> Project No.: 102.3 <br /> September 10, 1999 <br /> Mr. Harlin Knoll <br /> San Joaquin County PHS/EHD <br /> 304 E. Weber Avenue, P Floor <br /> Stockton, CA 95202 <br /> Re: Work Plan-Remedial Action Feasibility Study <br /> `Location:- r - — - Cutter-lJutuber,3430 S., I-IDorado St.,Stockton,_Site._Code_1.087....,.... _ <br /> Dear Mr. Knoll: <br /> i <br /> This letter is to memorialize our telephone conversation of September 7, 1999. On April .14, 1999, <br /> your office issued a letter directing the Bank of Stockton to submit a Work Plan to perform . <br /> additional site characterization and to conduct a remedial feasibility study at the subject site. The <br /> additional site characterization was to focus on the deeper groundwater aquifer which was thought <br /> to have been impacted by the gasoline release of this site. As we have discussed from time to time <br /> over these past months, it now appears that the groundwater samples from the deep well (MW-8A) <br /> have been displaying steadily reduced contaminate "levels. The sample from the most recent <br /> monitoring event contained virtually no detectable contaminants, and we have concluded.that cross- <br /> contamination from shallower levels impacted essentially clean groundwater during the initial <br /> drilling the deep well. <br /> Based on this observation, and with your verbal concurrence; we have been holding the preparation <br /> of the Work Plan in abeyance. In our conversation of the 7t", you directed that we continue to defer <br /> submission of a Work Plan pending results of the next 1 to 2 quarterly monitoring events. <br /> If you have any questions, please do not hesitate to call (209) 569-0293. <br /> Respectfully Submitted, <br /> Geo-Phase Environmen Inc. <br /> Stephen M. Lankford, RG/REA <br /> Principal Geologist <br /> CC: Pat O'Rourke, Bank of Stockton <br /> 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />