Laserfiche WebLink
1.0 INTRODUCTION AND REMEDIATION PROGRAM OVERVIEW <br /> This report has been prepared by Terranext, on behalf of Southern Pacific Transportation <br /> Company (SPTCo), to document remediation of lead-impacted soil at the SPTCo Old Tracy <br /> Yard in Tracy, California. The portion of the Old Tracy Yard addressed in this document is <br /> a 16-acre parcel located at 780 East 6th Street (south side) between MacArthur Drive and <br /> East Street (Figure 1). <br /> This parcel, currently zoned for industrial development, is identified within the City of <br /> Tracy's General Plan as future mixed residential/commercial. In the early 1990s, SPTCo <br /> identified a potential buyer who was interested in undertaking residential development of the <br /> parcel. As a condition for approval of the buyer/developer's construction plans for the site, <br /> 4 The City of Tracy Planning Department required written approval from San Joaquin County <br /> Public Health Services - Environmental Health Division (County) that the site conditions <br /> were acceptable for residential development. The County, in turn, required documentation <br /> from the California Regional Water Quality Control Board - Central Valley Region (Regional <br /> Board) and the California Environmental Protection Agency - Department of Toxic <br /> Substances Control (DTSC) that SPTCo had satisfied any concerns regarding potential site <br /> impacts to ground water and had remediated the site such that levels of any chemical <br /> compounds or metals in soil were acceptable for residential development. Several site <br /> investigations were conducted during the early 1990s. These programs involved surface and <br /> subsurface soil sampling and the installation and sampling of two monitoring wells. Results <br /> from all of these programs identified lead in soil as the only constituent of concern. <br /> Based on this information, the planned residential use of the site, and agency protocols, a soil <br /> cleanup level of 500 milligrams per kilogram (mg/kg) total lead was established by the <br /> Regional Board as protective of ground water. A workplan for site soil remediation was <br /> submitted to the Regional Board on November 18. 1994. This workplan proposed that the <br /> 169-002.rpt/08-09-96/u/keyda[a/old[racy/repom/rp[002 i <br /> TerraNext <br />