Laserfiche WebLink
w <br /> Quarterly Summary Report <br /> Second Quarter 1994 <br /> Unocal Bulk Plant 0788 <br /> 8203 East 11th Street <br /> Tracy, California <br /> City/County ID #: Unknown <br /> County: San Joaquin <br /> BACKGROUND <br /> A partially buried 5,000-gallon transmission fluid storage tank was removed on <br /> December 13, 1989, and analysis of soil samples indicated low levels of petroleum <br /> hydrocarbons. The San Joaquin County Public Health Services Department <br /> requested additional investigation on January 30, 1990. Pacific Environmental <br /> Group, Inc. (PACIFIC) installed groundwater Monitoring Wells U-1 through U-3 <br /> on October 24 and 25, 1990. Wells U-4 through U-6 and exploratory soil <br /> Borings U-A through U-C were installed in May 1991. On-site Wells U-7 and U-8 <br /> and off-site Wells U-9 and U-10 were installed in March 1992, as described in <br /> PACIFIC's Soil and Groundwater Investigation Report, dated June 11, 1992. A <br /> Remedial Action Plan (RAP)was submitted on March 18, 1993. A work plan for <br /> implementation of the RAP was submitted on July 13, 1993. System design was <br /> completed June 18, 1993. Air emissions permit application was approved by the <br /> San Joaquin Air Pollution Control District in July 1993. The bulk plant was <br /> permanently closed and all related activities ceased on December 1, 1993. <br /> RECENT QUARTER ACTIVITIES <br /> Quarterly groundwater monitoring and sampling were performed by MPDS <br /> Services.on May 12, 1994. Results of the May 1994 monitoring event are <br /> documented in a June 1994 MPDS document. <br /> NEXT QUARTER ACTIVITIES <br /> Quarterly groundwater monitoring and sampling will be performed and <br /> documented by MPDS Services. Soil excavation and soil vapor extraction are <br /> being considered as potential remedial strategies. A remedial strategy will be <br /> finalized during third quarter.1994. The schedule outlined in the March 18, 1993 <br /> RAP will be modified to reflect the pending demolition of the bulk terminal <br /> facility. <br /> CHARACTERIZATION/REMEDIAL STATUS <br /> Soil contamination delineated? Yes. <br /> Dissolved groundwater delineated? No. <br /> Free product delineated? Not applicable. <br /> Amount of groundwater contaminant recovered this quarter? None. <br /> Soil remediation in progress? No: <br /> ,31000103/2Q94QSR . 1 July 18,1994 <br />