Laserfiche WebLink
1 <br /> 'Reference— Quarterly Monitoring Report Dated 01/29/2001 Q4, 2000 <br />' 7 Reference— Quarterly Monitoring Report Dated 06/18/2001 Q1, 2001 <br /> aa Reference— Quarterly Monitoring Report Dated 08/02/2001 Q2, 2001 <br /> i9 Reference— Quarterly Monitoring Report Dated 11/12/2001 Q3, 2001 <br /> 10 Reference— Quarterly Monitoring Report Dated 02/05/2002 Q4, 2001 <br /> 11 Reference— Quarterly Monitoring Report Dated 05/05/2002 Q 1, 2002 <br /> 12 Reference— Quarterly Monitoring Report Dated 08/08/2002 Q2, 2002 <br />' CTL contracted E1 to complete the required Quarterly Monitoring Report for the Site at 3105 <br /> South El Dorado Street, Stockton The location is shown in Figures 1 and 2 <br /> tThis Quarterly Monitoring Report summarizes the groundwater monitoring activities completed <br /> at the site on 11 September 2002 <br /> 2.0 SITE DESCRIPTION <br /> rThe subject site is located in the southern part of the City of Stockton, California (Figures 1 and <br /> 2) The site is an essentially level commercial trucking facility, which contains an office <br /> building, two truck maintenance shops, a truck-washing facility, a small above-ground storage <br /> tank compound, a vehicle fueling facility and a large parking area for tank trailers <br /> 2.9 Geologic Conditions <br /> The site is situated in the northern part of the San Joaquin Valley, in an area underlain by several <br /> l <br /> thousand feet of terrestrial and marine sedimentary rocks The northern Sari Joaquin Valley has <br /> been a lowland area subject to marine intrusion, flooding and incremental sedimentation for <br /> millions of years The uppermost 1000 feet of sedimentary strata consist of Holocene, <br /> Pleistocene and Pliocene sediments, including the Laguna Formation, the Mehrten Formation <br /> and the Valley Spring Formation The sediments are interbedded mixed-fluvial and deltaic <br /> sediments, dominated by medium-grained sand and silts Generally, thin beds of unconsolidated <br /> clayey silt, silty clay and sandy clay are abundant in this upper zone, which are laterally <br /> discontinuous over distances of several tens of feet <br /> 2.2 Hydrogeologic Conditions <br />` Groundwater is present beneath the site at a depth of 32 80, 32 50, 32 70 and 32 30 feet below <br /> r� <br /> Environeenng,Inc Project No D2 009 77 <br /> 1 Page 2 <br />