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I Geological Technics Inc Page 5 35500 Welty Road,Vernalis,CA J_ Report-Preliimmary Environmental Site Assessment Protect No 248 2 February 6, 1995 i1) The southwestern corner-Hunter Container Company 2) The northwestern corner-Western Farm Supply 3) The northeastern corner-Vernalis Grocery and Post Office (including at least one UST at the Vernalis Grocery) 4) The southeast corner-the subject Property (35500 Welty Road) The land across Welty Road to the west is planted in walnut trees To the south is the property owned by Mr Brinkman To the south of this property is the Enviropur-West-Vernalis storage facility and some other light industrial properties (See telephone interview with Ron Ferrario, below) F • What appears to be a recently removed underground storage tank was observed on the property to the south It was not readily evident as to where this tank had originated • A large concrete maintenance pit was observed to be built into the concrete pad of the 35500 Welty Road site which extends onto the adjoining property According to Dale Brinkman, a former owner of the 35500 Welty Road Property and owner of the adjacent property, this maintenance pit - • was reportedly used for servicing buses and trucks during the operation of tthe former labor camp 2.4 Interviews Interviews were conducted with the following people Mr Ron Llewellvn Telephone Interview According to Mr Llewellyn, prior to 1935 the Property housed a pumping station for the Chevron/Standard Oil product pipeline located near or along the northeastern margin of the site (parallel to Highway 33 and the railroad) The following is a summary of the property's pertinent information • The Property is approximately 5-6 acres in size and triangular in shape • It is bounded in the southeast by the San Joaquin/Stanislaus County line, in the northeast by the Southern Pacific railway and State Highway 33 and in the west (the hypotenuse of the triangle) by Welty Road (Figure 2) • The assessors parcel number for the site is (APN 255-260-03) • Past land usage for the Property includes the operation of a pumping station for Standard Oil's former crude oil pipeline and a labor camp Presently, the property is empty of surface structures, and has been since about1950 • The nearest water well is located to the east and south (approximately 100 ft from the property line) i