WORK PLANS - Laserfiche WebLink

Home Browse Search

Closure Documentation—7500)POP05t Eleventh Street, Tracy, CA. page I 1.0 INTRODUCTION This report, which was prepared by Dietz Engineering and Construction, Inc. (DEC), is in response to a letter dated April 19, 2012 from the San Joaquin County Environmental Health Department (SJCEHD) to Mr_ Carl Navarra requesting documentation and technical analyses to support regulatory closure of the site of a former fueling station at 7500 West Eleventh Street, Tracy, California(Navarra Site). 1.1 Site Location The subject property is situated at 7500 West Eleventh Street, Tracy, California, at the intersection of Chrisman Road and West Eleventh Street. That location is shown on Figure 1. Its elevation is between 48 and 51 feet above the National Vertical Datum (NAVD)_ A plan of the site and neighboring areas is presented on Figure 2. 1.2 Site Codes The California State Water Resources Control Board (SWRCB) has established the following Global ID code for the site under its Geographic Environmental Information Management System: T0607700606 The Regional Water Quality Control Board - Central Valley Region (RWQCB) has assigned to the site the following Case Number: 390773 The San Joaquin County Environmental Health Department (SJCEHD) has established the following identifier for the subject site: Site Code: 1392 1.3 Background The property at 7500 West Eleventh Street was used as a fueling station for trucks and other vehicles from circa 1930 until 1998. Over that period, the station was owned and operated by a number of entities. The property is also the site of a restaurant and a disused public truck scale. Mr. Carl B. Navarra and Mrs. Annamae F. Navarra, et ux (the Navarras) purchased the property on October 31, 1979. The fueling station was operated by entities who leased part of the property from the Navarras. All underground storage tanks were removed from the site in December 1998. At the time the tanks were removed some 2000 gallons of floating product that had been released from piping at the former filling station pump island was extracted from the groundwater. 521.25 tons of contaminated soil beneath the pump island was also excavated and disposed off site. An extensive program of site characterization and groundwater-quality monitoring was initiated in December 1998 and was completed in July 2011. All engineering reports generated from the tank removal, soil and groundwater remediation, site characterization and groundwater-quality monitoring program have been submitted to the San Joaquin DEC