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41 TH <br /> MARK <br /> ' CROUP, INC. <br /> E4GINEERS & GEOLOGISTS <br /> April 28, 1995 <br /> 95-1104802 80 <br /> Hinaman Trust <br /> P 0 Box 365 A,%Nil,, <br /> Gridley, California 95948 Mir/ <br /> %F <br /> Attention Mr David Chinchen <br /> ' Subject REPORT - Preliminary Subsurface Investigation <br /> 2409 East Main Street <br /> Stockton, California <br /> Dear Mr Chinchen <br /> Introduction <br /> The MARK Group, Inc (MARK) is pleased to present the results of a preliminary <br /> subsurface investigation performed at the property located at 2409 East Main Street in Stockton, <br /> California The scope of work performed during this investigation was based on the <br /> recommendations and conclusions presented in "Phase I Environmental Site Assessment" <br /> (MARK, 2/23/95) and our subsequent follow-up conversations This work was conducted in <br /> conformance with the tasks included in MARK's Cost Estimate (dated 3/10/95) for preliminary <br /> <� subsurface investigation Work began following verbal authorization by you on March 16, 1995 <br /> The site location is illustrated on Drawing 1 <br /> Scope of Work <br /> The scope of work for this investigation consisted of the following <br /> 0 Permit applications from the San Joaquin County Public Health Services Agency <br /> (SJCHA) to drill 6 exploratory soil borings to depths ranging from 6 to 15 feet, <br /> ■ Preparation of a Site-Specific Health and Safety Plan for the drilling operations, <br /> ■ Observing soil conditions and collection of soil samples from selected areas of the <br /> site, <br /> ■ Submittal of soil samples to a State of California certified laboratory for p ry o total oil <br /> and grease, total petroleum hydrocarbons as gasoline (TPH-G), and benzene, <br /> toluene, ethylbenzene, and xylenes (BTEX) analyses, and <br /> Hookston Square, Suite 120 - 3480 Buskirk Avenue - Pleasant Hili, CA 94523 - (510) 946-1055 • FAX(510) 946-9813 <br />