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Y ti l PH0"4E ,JO. 2e9 95-2 9'792 x'S_ �. <br /> fi- 30 199E OG:,;rPhl P2 <br /> GROUND ZMO ANALYSIS, INC. <br /> 2291 W,M&Vb LIM, Suite 12717 <br /> Stockton, California 95207 <br /> Telephones (209)9aZ-3481 <br /> Facakow (209) 952.989? <br /> September 27, 1996 <br /> Mr, Doug Wilson <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.U. Pox 388 <br /> Stockton, CA 9.5201-0388 <br /> Subject: Workplan for Subsurface Investigation, Roy's Towing <br /> 3570 East Miner Avenue, Stockton, California <br /> ]dear Mr. Wilson: <br /> On behalf of Ray and Norma Knoll, Ground Zero Analysis, Inc. ((3round Zero) is submitting <br /> this workplan for subsurface investigation at the subject site, <br /> the results of previous investigations; desThis workplan briefly summarizes <br /> cribes the hydrogeologic setting of the property; and <br /> details the field and laboratory methodology to be employed in the investigation. The location <br /> Of the site is shown on Figure 1. <br /> AK4M= <br /> The subject site is a towing service yard bounded by East Miner Avenue to the north, Highway <br /> 99 to the east, a Southern Pacific Railroad casement to the south, and a small business property <br /> to the west. One structure, used for office space and parts storage is currently located on the <br /> PrOPer*y. Prior to Right of Way acquisition the parcel owned and occupied by Roy's Towing <br /> was formerly larger and included a second structure used as a mechanics' shop/workshop, This <br /> shop was located east of the existing structure. The eastern portion of the site, appo <br /> 50-60 feet wide and 430 feet long, was acquired by the California Department of Tranrsportat oaten <br /> (CalTrans) for Highway 99 improvements. A site plan is depicted on Figure 2. <br /> On February 1, 1988 California Department of Health Services ()DHS) <br /> Pr� g the <br /> rtY and observed apparent soil staining, primarily in the vicinity of the warebouse/o face <br /> building and the workshop. Samples were collected from surface soil near the two structure <br /> as well as from a small sump inside: the warehouse building and from two storage cotainers. <br /> Laboratory analysis reported that some of the surface soil samples contained elevated <br /> a <br /> 1. <br />