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y 7 4.0 SITE VISIT AND OFFSITE RECONNAISSANCE `r HLA investigated both the site and the study area, The interviews with Mr. Lopez and Mr. Selover defined as the off site area within a radius of revealed four principle areas of potential approximately 1/4 mile of the site boundary environmental liability or Recognized •+ (Plate 2). Environmental Concerns(RECs)1. These RECs include the following: 4.1 Site Visit . Former USTs usage, V On September 17, 1996 HLA personnel visited • Former ASTs usage ' the Site to review areas of potential Existing ASTs usage, and environmental concern related to the use,storage, • Agricultural Chemicals usage. or disposal of hazardous materials at the Site or in the vicinity. The Site visit centered around a Former USTs site walk and interview with Mr. Gary Lopez, the current foreman of the Traina-Barnes Farms. Mr. Two gasoline USTs, one 550 gallon and one 1,100 Lopez's association with the operations at the gallon, were formerly located at the Site (Plates 2 Traina Barnes farms reportedly extends over the and 3). The USTs were reportedly removed in 4-0 last 20 years including the last eight years as approximately 1990. Both of the gasoline USTs foreman. In addition, Mr. 011ie Selover, are still located onsite (unused) and both operations manager of the Traina-Barnes Farms appeared to be intact without apparent holes or for approximately the last 20 years, was significant rust. According to Mr. Lopez, after the interviewed and provided corroboration and UST's were removed, the tank pit was left open clarification of several facets of the site's history, for approximately nine months. Mr. Lopez also including information on usage of agricultural indicated that the tank pit did not appear to have chemicals, and USTs and ASTs on the Site. been impacted with fuel. HLA personnel did not observe signs of major Former and Existing ASTs spills or leaks on the site property or within the study area. Observation of the property was made For reportedly the last 6 years, one 550-gallon by walking and driving around the perimeter on gasoline and one 550-gallon diesel farm ASTs public and dirt access roads. Nearly the entire have been present on site within a 1.5 high .. site is occupied by an active apricot orchard. The concrete secondary containment structure (Plate only buildings present on Site are located in the 3). Prior to the installation of the secondary southeast portion of the site, north of the dirt containment, the diesel AST was reportedly road which marks the southern boundary of the present in the current location of the secondary how Site. Three buildings, a collapsed garage,and a containment structure (Plate 3). Surficial soils in shed are still present on the Site. These include a the immediate vicinity of the former AST large barn/storage building, a single family (potentially impacted) have been concealed by .r residence, and a combination shop and office the installation of the secondary containment building, and a small shed which houses the structure. Later interviews with Mr. Selover domestic well. The present residence, a mobile during the Phase II Investigation indicated that 6w home, is occupied by the foreman and his family the diesel AST had previously been located at the and has been onsite approximately six years. I For purposes of this assessment,the term"recognized environmental conditions"shall mean the presence or likely presence of any hazardous materials on the Site under conditions that indicate an existing release,a past release,or a material release of any hazardous materials into structures on the property or into the ground,groundwater or surface water of the Site. The term is not intended to include de minimis conditions that generally do not present a material risk of harm to the public health or the environment and that generally would not be the subject of an enforcement action if brought to the attention of the appropriate governmental agencies. ti G:1Wp\GDMGH38371Z.151 Harding Lawson Associates 6