ARCHIVED REPORTS XR0003371 - Laserfiche WebLink

Home Browse Search

Well Installation Report 1 7-Eleven Inc., Store#14117, 2725 Country Club Boulevard,Stockton,CA August 12 1999 1.0 INTRODUCTION ' This report is submitted by IT Corporation to summarize the results of the groundwater monitoring well installation at 7-Eleven Store No. 14117, 2725 Country Club Boulevard, Stockton, California (Figures 1 ' and 2). The scope of work for the site investigation included drilling and soil sampling of four borings, installing groundwater monitoring wells within each boring, and preparation of this report summarizing ' the methods and results of the work performed. The work was designed to fulfill the requirements of the San Joaquin County Public Health Services (SJCPHS) as requested in a telephone conversation with IT Corporation personnel on March 30, 1999. The newly installed wells at the site will be monitored ' and sampled during the third quarter 1999. The work scope described in this report was completed at the site on May 13 and 14, 1999. All work was performed in accordance with IT Corporation's Work Plan for Subsurface Investigation, dated March 30, 1999, which was approved by the SJCPHS in fax transmission dated April 30, 1999. 2.0 BACKGROUND The site is bounded to the north and west by the Patmon Property (residential condominiums), to the ' east by a USA (former Exxon) Service Station, and to the south by Country Club Boulevard. There are reported dry cleaning facilities in the general site area. ' The following section outlines the previous environmental history of the 7-Eleven facility. It is noted that the USA/Exxon facility has reportedly experienced a release of hydrocarbons, but detailed information regarding the status of investigation and/or remediation at the USA/Exxon site is not available at this time for inclusion in this report. Future reports on the 7-Eleven site may include relevant information on the USA/Exxon site as further information is obtained from SJCPHS files. 'f On July 17, 1998, three 10,000-gallon single-wall underground storage tanks (USTs) were removed ' from the site, and were replaced with new USTs (Figure 2). The new tanks were installed in a newly- excavated tank pit, located east of the old tank pit near the eastern site property line The USA/Exxon site is located just east of the new tank pit area. During the tank removal, six soil samples were collected from the floor of the UST excavation beneath each end of the three USTs at a depth of 13.5 feet to 14.5 feet BGS_ One groundwater grab sample 14117we I1.rpt