Laserfiche WebLink
V r../ <br /> �. Closure Summary Report <br /> CITY OF MANTECA WATER WORKS YARD <br /> 220 Oak Street, Manteca, California <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br /> In accordance with the request of Mr. Jim Podesta of the City of Manteca, Advanced <br /> GeoEnvironmental, Inc. (AGE) has prepared the enclosed Closure Summary Report for the former <br /> underground storage tank (UST) area at 220 Oak Street, Manteca, California. The scope of work <br /> included the installation of one soil boring in the vicinity of the former under ground storage tank <br /> on the site to collect soil and ground water samples for laboratory analysis. The objective of the work <br /> was to qualitatively assess the former underground storage tank (UST) site for petroleum <br /> hydrocarbon-impacted soil and/or ground water. The site and its surroundings are illustrated on <br /> Figure 1 -Location Map. Locations of structures and soil boring on the site are illustrated on Figure <br /> 2 -Site Plan. <br /> Sampling was performed in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> 160 Board (CVRWQCB) guidelines for investigations of underground storage tank(UST) sites. <br /> 2.0. BACKGROUND <br /> 2.1. SITE DESCRIPTION <br /> The site is located in a light industrial area of central Manteca at the intersection of Oak and Vine <br /> Streets. A single structure is located on the property and the site is currently occupied by the City <br /> Water Department. <br /> 2.2. UNDERGROUND STORAGE TANK REMOVAL <br /> One 8,000-gallon gasoline UST was removed from the site in July 1992. Two soil samples were <br /> collected from the floor of the excavation. Toluene, ethylbenzene and xylenes were detected in the <br /> soil sample collected from the north end of the UST excavation at concentrations of 36, 10 and 55 <br /> `"' parts per billion (ppb, reported as micrograms per kilogram). <br /> Based upon laboratory results of soil samples collected during the UST removal, the San Joaquin <br /> `"P County Public Health Services -Environmental Health Division (PHS-EHD) required definition of <br /> the vertical and Iateral extent of hydrocarbon-impacted soil and/or ground water at the site. <br /> r.. Advanced GeoEnvironmental,Inc. <br />