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• CLOSURE SUMMARY REPORT <br /> FRANKLYN COLE PROPERTY <br /> 7505 Wesi Linne Road, Tracy, California <br /> I-0. INTRODUCTION AND SCOPE OF WORK <br /> In accordance with a request from Mr.Franklyn Cole,Advanced GeoEnvironmental,Inc. (AGE)has <br /> prepared this Closure Summary Report for 7505 West Linne Road, Tracy, California (the site). <br /> This report summarizes the remediation of the hydrocarbons in soil and the installation and sampling <br /> of a ground water monitoring well network. The location and vicinity of the site is illustrated on <br /> Figure 1. Structures, borings and former UST and dispenser locations on the site are illustrated on <br /> Figure 2. <br />' The report is prepared in accordance with the Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) and the San Joaquin County Environmental Health Division(SJC-EHD) guidelines <br /> for the investigation of underground storage tank (UST) sites. <br /> 2.0. BACKGROUND <br /> 2.1_ SITE DECRIPTION <br />'. The site is located at the northwest corner of the intersection of Chrisman Road and Linne Road in <br /> a rural/agricultural area of low topographic relief southeast of Tracy, California, in San Joaquin <br /> County_ A grocery store,restaurant and office complex currently occupy the site. The site is shaped <br /> in an east-west trending rectangle, covering approximately ten acres of land. The former US T system <br />' was located at the southeast corner of the property. <br />' 2.2. GEOLOGICAL AND HYDROGEOLOGICAL SETTING <br /> The subject site is located in the western portion of the Great Valley geomorphic province of <br /> California. The valley is a nearly flat lying, elongate trough trending northwest and southeast for <br />' approximately 450 miles. The valley is enclosed by the granitic Sierra Nevada Mountains on the east <br /> and the sedimentary and metamorphic Franciscan Coast Range on the west. The surficial and upper <br /> several thousand feet of subsurface layers consist primarily of unconsolidated and consolidated <br />' alluvial and floodplain sheet deposits. The sediments consist mostly of sand and gravel interbedded <br /> with clay and silt of Quaternary age,which were derived from the Sierra Nevada Mountains. Beneath <br /> the upper sedimentary deposits lies a thick sequence of marine deposits of Mesozoic age, which in <br />' turn is underlain by a pre-Jurassic complex of igneous and metamorphic rock. <br /> In the area of monitoring well MW1, silty sand and silt were encountered from a depth of <br /> approximately 5 feet to 25 feet bsg while interbedded clay and gravel were present at depths between <br /> _ 25 and 45 feet bsg. In monitoring well MW2, sand was encountered ata depth of 55 feet bsg and silty" ; <br /> T ` clay was encountered below 55 feet. In the area of monitoring well MW-5, saturated silt to silty sand <br /> were encountered at 50 feet, 55 feet and 60 feet bsg_ Brown, saturated poorly graded sand <br />' interbedded with silt and clay layers occur between 65 and 100 feet bsg. <br /> • <br /> Advanced GeoEnvir0=ental,Ine. <br /> 1 <br />