WORK PLANS - Laserfiche WebLink

Home Browse Search

Ground Water Investigation Work Plan MUNICIPAL SERVICE CENTER 1465 South Lincoln Street,Stockton, California 1.0. INTRODUCTION At the request of the City of Stockton,Advanced GeoEnvironmental, Inc. (AGE) has prepared this work plan for investigation of the Municipal Service Center site located at 1465 South Lincoln Street, Stockton, California (Figure 1). The purpose of the investigation is to assess ground water for tetrachloroethene (PCE) encountered in shallow soil samples collected during abandonment of a waste oil product line at the site in March 2001. This work plan provides the scope of work and procedures for advancement of one soil probe boring, collection of soil and groundwater samples, laboratory analysis of the samples, and soil boring abandonment. This work plan has been prepared as required by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) by letter dated 19 July 2001 and was prepared in accordance with the Regional Water Quality Control Board's Tri-Regioned Board Staff Recofnmendations for Preliminary Evaluation and Investigation of Underground Tank Sites guidelines for the investigation of UST sites. 2.0. BACKGROUND The site is located at 1465 South Lincoln Street in Stockton, California (Figure 1). The parcel is located in the northwest portion of Section 14 of Range 6 East, Township l North, Mount Diablo Rase and '`Meridian. 2.1. SITE DESCRIPTION The property is located in an industrial and commercial area of southern Stockton. The property is presently occupied by the City of Stockton Municipal Service Center,which includes three one-story structures housing an office, maintenance garage, lunchroom, miscellaneous shops, and a gasoline fueling facility consisting of USTs, two dispenser islands with four gas dispensers. 2.2. PRODUCT LINE ABANDONMENT Three former waste oil product lines were abandoned in place on 21 march 2001 (Figure 1) at the referenced address. Following excavation, soil samples were collected two feet below the exposed end of Line A (LA-N) and directly below the inlets of Line A (LA-S), Line B (LB-S) and Line C (LA--C). The samples were analyzed for total petroleum hydrocarbons quantified as gasoline (TPH-g), diesel (TPH-d)and motor oil (TPH-mo),volatile organic compounds including benzene, Advanced GeoEnvironmental,Inc.