ARCHIVED REPORTS XR0000018 - Laserfiche WebLink

Home Browse Search

Preliminary Investigation and Evaluation Report RALPH'S SQUARE 2122 South Airport Way, Stockton, California 1.0. INTRODUCTION At the request of Mr. Ralph Lee White,property owner,Advanced GeoEnvironmental,Inc. (AGE) has prepared the enclosed Preliminary Investigation and Evaluation Report(PIER)for 2122 South Airport Way, Stockton, California(site).The purpose of this investigation was to assess the lateral and vertical extent of petroleum hydrocarbon impacted soil and groundwater at the site. The scope of work included establishment of soil borings,collection and analysis of soil samples,installation of three ground water monitoring wells, collection of ground water samples from three wells and preparation of this report of findings.The location of the site is illustrated on Figure 1.A plan of the site is illustrated on Figure 2. This report has been prepared in accordance with guidelines issued by the Central Valley Regional Water Quality Control Board(CVRWQCB)for subsurface investigations of the former underground storage tank(UST)systems. 2.0. BACKGROUND The site is bounded on the west by Airport Way, on the south and east by a vacant lot, and on the south by a commercial property. A single structure housing a mini-mart presently occupies the eastern portion of the site. 2.1. REGIONAL GEOLOGIC SETTING According to a Geologic Map of California, published in 1966 by the California Department of Conservation Division of Mines and Geology,the site area is within the Great Valley Geomorphic Province(GVGP)of California,a large,elongate,northwest trending structural trough.The GVGP is subdivided into two major divisions designated the Sacramento and San Joaquin Valleys,which have been filled to the present elevation with thick sequences of sediment ranging in age from Jurassic to present day, 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 eastern boundaries of this province are comprised of the California Coast Range and the Sierra Nevada,respectively. Based on a General Soil Map from the San Joaquin County Soil Survey,published by the United States Department of Agriculture Soil Conservation Service in 1992, the site area is described as within the Jacktone-Hollenbeek-Stockton(JHS)association.The JHS soils are located on basin runs and within basins, and generally consist of somewhat poorly drained and moderately well drained, fine-textured soils that are moderately deep and deep to a cemented hardpan.The JHS soils generally formed in alluvium from mixed rock sources. Advanced GeoEnvironrnental,Inc.