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6666 Owc <br /> D�A <br /> Pleasanton, Ca, <br /> ` 94. <br /> ILJI <br /> 510.460.530, <br /> ov <br /> Fax 510.463.255255 <br /> 9 , <br /> A S S O C I A T E S I N C . <br /> November 17, 1998 <br /> 14VIRONMENTAL HEALTH DIVISIdW503.0003 k20 <br /> 04 E.Weber Ave.Third Floor <br /> O. Box 388, Stockto CA 95201-0388 <br /> San Joaquin County Public Health Se ices Approved <br /> Environmental Health Division Denied ❑ <br /> ftnditions e 4 i `" <br /> 304 East Weber Avenue,Third Flo r s Olt <br /> a 5 p/4. re«. f <br /> Stockton, California 95202 "Y <br /> v <br /> Attention: Ms. Carol Oz ys ! • w��4 e Oce �� <br /> e•,w v t <br /> SUBJECT: RESPONSE LETTE FOR <br /> ADDITIONAL GRO WATER INVESTIGATION <br /> QUIK STOP MARKET N 2 <br /> 3555 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> Dear Ms. Oz: <br /> On behalf of Quik Stop Markets, Inc. (Quik Stop), ATC Associates Inc. (ATC) has prepared this <br /> response letter to the telephone conversation that took place on October 29, 1998, between Ms. <br /> Carol Oz of the San Joaquin County Public Health Services (SJCPHS) and Mr. Al Martinez of <br /> ATC regarding ATC's revised workplan dated October 19, 1998. <br /> During the telephone conversation, the SJCPHS indicated that the methyl tert-butyl ether <br /> (MTBE) concentrations had increased in the most downgradient groundwater monitoring well <br /> (MW-2) and that additional site assessment activities were warranted to further define the <br /> downgradient extent of MTBE in soil and groundwater. The SJCPHS based the request on their <br /> review of ATC's Quarterly Groundwater Monitoring Report Second Quarter 1998 dated July 20, <br /> 1998. ATC informed the SJCPHS that ATC's original workplan dated August 3, 1998, contained <br /> a scope of work to further define the vertical and lateral downgradient extent of MTBE in soil <br /> and groundwater. It was agreed to by the SJCPHS and ATC, on behalf of Quik Stop, that if Quik <br /> Stop agreed to incorporate the proposed work in the August 3, 1998, and October 19, 1998, <br /> workplans that a third workplan would not be necessary. Therefore, ATC, on behalf of Quik <br /> Stop, hereby agrees to implement both workplans to further define the vertical and lateral extent <br /> of MTBE in soil and groundwater. <br /> The SJCPHS also requested that rose diagrams be included in the future quarterly groundwater <br /> monitoring reports. ATC, on behalf of Quik Stop, will implement this request beginning with <br /> the Third Quarter 1998 Groundwater Monitoring Report. A copy of this report will be submitted <br /> to the SJCPHS under a separate letter. <br /> \Tlewamon\adminukW anina\QuikswpV mponseLener doc <br />