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BALBI & CHANTG <br /> ASSOCIATES <br /> Gectectlnical Consultants • Materials Testing 151 Link Road Suite A Cordelia CA 94585 (707) 864-2020 <br /> May 23, 1988 <br /> Page 1 <br /> Mr. T. T. Potter <br /> ARCO Petroleum Products Company <br /> AP 1825 <br /> 515 South Flower Street <br /> Los Angeles, California 90071 <br /> subject: Procedures for Field Exploration and <br /> Laboratory Testing Programs <br /> ARCO AM/PM Mini Market Facilities <br /> Dear Mr. Potter: <br /> At the request of Mr. Chris Winsor of ARCO Petroleum Products <br /> Company, Environmental Engineering Division, we are submitting to <br /> you our procedures for field exploration and laboratory testing <br /> programs. These programs are for both soil and groundwater <br /> sampling, and include monitoring well installation and sample <br /> storage and handling techniques for the soils investigations and <br /> hydrocarbon evaluation studies conducted for ARCO AM/PM Mini <br /> Market Facilities. <br /> From the time of conducting our first project for ARCO to present <br /> date, all field exploration programs have been conducted <br /> according to the guidelines outlined by your company, "Standard <br /> Procedures for Hydrocarbon Evaluations for the ARCO Petroleum <br /> Products Company on New AM/PM Site Acquisitions" . Also, in <br /> conjunction to these guidelines our office follows the guidelines <br /> prepared by the California Regional Water Quality Control Board <br /> and entitled "Guidelines for Addressing Fuel Leaks, September <br /> 1985" . <br /> piald Exploration Program <br /> All subsurface investigations conducted at the proposed ARCO <br /> . sites consists of drilling a minimum of four test borings in the <br /> vicinities of proposed building, canopy structure/pump islands <br />