ARCHIVED REPORTS XR0009933 - Laserfiche WebLink

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� L 7 , Sampling Plan- 152 East 11th Street, Tracy, CA ' 4age 2 MAY 14 1993 INTRODUCTION ENVIRONMENTAL HEALTH This document has been prepared in response to a request by the San Joaquin County Public Health Services, Environmental Health Division (SJCPHS) to develop a sampling plan for monitoring groundwater quality beneath property at 152 East 11th Street, Tracy, California and beneath surrounding areas that have been affected by releases of hydrocarbon fuels into the subsurface from underground storage tanks previously located on the subject property and on nearby sites The plan provides for periodic analysis of groundwater samples recovered from existing wells located on the subject property at 1.52 Eat 11th Street, at the Beacon Station at 153 East 11th Street (which is to the north and directly across the street) and in adjacent areas of the public streets together with samples from additional wells which are to be installed according to a workplan that has been approved by the SJCPHS SITE LOCATION The subject property is situated at No 152 East 11th Street, Tracy, Cahfonva This location is shown on Figure 1 A plot plan is presented as Figure 2 BACKGROUND The property at 152 East 11th Street was operated as a gasoline station from approximately 1946 until 1978 Over that pend, the station was operated by a number of entities that included Benny's Signal Service Station, Coffey's Signal Service Station, Bob's Enco Gas Station and Terrible Herbst Inc Terrible Herbst Inc installed one 10,000 gallon and two 3,000 gallon underground storage tanks in 1972 Mr and Mrs Carl Navarra and Mr and Mrs Albert Navarra (the Navarras) purchased the property m December 1978 from the San Diego Armour Oil Company No fuel dispensing or service station operations have been conducted on the site since that thine The property is now occupied by Russell's Flower Pavilion In April 1984, the three tanks described above were removed from the site under the permit and oversight of the City of Tracy No soil or groundwater samples were taken at the time the tanks were removed In 1988 a site investigation, that included installation of monitoring wells, indicated that groundwater beneath the property is affected by hydrocarbon fuel components Subsequent investigation of the site and adjacent property has been made under the regulatory oversight of California Regional Water Quality Control Board - Central Valley Region (RWQCB) and the SJCPHS The scope and findings of these investigations are summanzed in the following sections