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Advanced <br /> Inc .GeoEnvironmental, - ' <br /> _.0- <br /> 15 February 2001 <br /> AGE-NC Project No. 97-0326 <br /> Ms. Margaret Lagorio, Supervisor <br /> San Joaquin County Public Health Services - Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Subject: Site Assessment Work Plan Addendum <br /> K & S Gas & Grocery <br /> 701 East Charter Way, Stockton, California <br /> Dear Ms. Lagorio: <br /> As per our conversation this morning, AGE believes that an additional CPT boring should be <br /> advanced on the above-referenced site to complete the vertical assessment of hydrocarbon-impacted <br /> ground water related to the UST system on the site. Ground water samples from 80 plus feet <br /> collected from two CPT borings on the site had noticeable hydrocarbon odor, ground water samples <br /> from 90 plus feet had suspected hydrocarbon odor. Rather than wait for laboratory analysis to <br /> confirm the presence of hydrocarbons in the samples, AGE believes it would be prudent to utilize <br /> the CPT unit still on-site to procure additional lithology and ground water samples in the area of <br /> concern to a depth of 130 feet bsg and save future mobilization,permitting,reporting and other costs. <br /> Ground water samples collected from the additional boring will be analyzed as described in the <br /> approved work plan. AGE seeks your approval of this additional CPT work. <br /> If you have any questions or require further information, please contact our office at(209)467-1006. <br /> Sincerely, ED Geo <br /> Advanced GeoEnvironmental, Inc. Wm v� NDFysoC� <br /> CP <br /> No.5837 <br /> Nuel C. Henderson, Jr. <br /> Senior Project Geologist <br /> California Registered Geologist No. 5837 <br /> cc: Mr. Khaldoon Othman, K & S Gas & Grocery <br /> Mr. Marty Hartzell, CVRWQCB <br /> 837 Shaw Road,Stockton,California 95215 <br /> Telephone(209) 467-1006 FAX(209) 467-1118 <br />