WORK PLANS - Laserfiche WebLink

Home Browse Search

WORK PLAN FOR ACTIVE SOIL GAS SAMPLING FRENCH CLEANERS 416 West Yosemite Avenue, Manteca, California 1.0. INTRODUCTION AND SCOPE OF WORK In accordance with the request ofMs.Francis Lee ofFrench Cleaners,Advanced GeoEnvironmental, Inc. (AGE) has prepared this Work Plan for Active Soil Gas Sampling at 416 West Yosemite Avenue, Manteca, California(the site). The scope of work is to determine if the site is a source of tetrachloroethylene (PCE) and trichloroethylene(TCE) and will include the advancement of at least five soil probes to a depth of 15 feet below surface grade(bsg). Soil gas samples will be collected from each probe and analyzed by a State-certified laboratory.Soil samples will also be collected from eachprobing and,based upon results of the soil gas samples, selected soil samples may be submitted for analysis.The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. This work plan is prepared in accordance with a request of the Central Valley Regional Water Qaulity Control Board (CVRWQCB) and guidelines established by the San Joaquin County Environmental Health Department(SJCEHD) for subsurface site investigations. 2.0. BACKGROUND AND HISTORICAL SITE USAGE The site is located at 416 West Yosemite Avenue, east of the intersection of Yosemite Avenue and Jessie Street.The site is located in a topographically flat area at an elevation between 30 and 35 feet above mean sea level in Manteca, San Joaquin County, California. The site is within the northeast quarter of Section 5, Township 2 South,Range 7 East,Mount Diablo Base and Meridian(Manteca Quadrangle, 7.5-Minute USGS Topographic Series, 1952,photo revised 1987). The site is presently occupied by a dry cleaning establishment. A gasoline fueling station and mini-mart is located immediately west of the site;the Rainwater site is presently undergoing ground water remediation associated with a release from underground storage tanks (USTs). Adjacent properties to the south are primarily residential;properties north and east are utilized primarily for commercial purposes. 2.1. REGIONAL GEOLOGIC SETTING The site is situated within the Great Valley Geomorphic Province of California, a large, elongate, northwest trending, asymmetric structural trough. The Great Valley Province has been filled with thick sequences of sediment ranging in age from Jurassic to Recent, creating a nearly flat-lying alluvial plain, extending from the Tehachapi Mountains in the south to the Klamath Mountains in the north.The western and castem boundaries of this province are comprised of the California Coast Advanced GwEnvironmental,Inc.