ARCHIVED REPORTS_XR0007878 - Laserfiche WebLink

Home Browse Search

Working To Restore Nature Addendum One to Remedial Action Plan March 1, 1993 Coca-Cola Former Distribution Facility, Stockton, California 54006.01 PREVIOUS WORK The reports of previous environmental work at the subject site are referenced in the References section of this report, and summarized below. Tank Excavation On April 19, 1990, Crisp Construction of Visalia, California, under the supervision of Quinn and Quoin Enterprises, Inc. also of Visalia, excavated and removed one 10,000 gallon underground diesel tank, one 1,000 gallon underground gasoline tank and associated piping and fuel dispensers. Environmental sampling for the UST removal was conducted by U S ' Techmcal Environmental Consulting, Inc. (USTEC, June 1990). The 10,000 gallon tank showed no visible holes or severe corrosion. The 1,000 gallon gasoline tank, however, showed severe signs of corrosion, and one 1/2-inch diameter hole was found in the wall of the tank Rmsate from the tanks was manifested and treated offsite at Refineries Service, Inc of Patterson, California. The tanks were transported to Levi's Iron and Metal Company m Fresno, California to be cut up and recycled. The excavated soil was aerated onsite in accordance with San Joaquin County Aix Pollution Control District requirements (USTEC, June 1990). ' Two soil samples were collected at each end of the diesel tank, and two samples at each end of the gasoline tank, and submitted for laboratory analysis. At the diesel tank, total petroleum hydrocarbons as diesel (TPHd) were nondetectable in one sample and 32 parts per million(ppm) in the second sample Total petroleum hydrocarbons as gasoline (TPHg), and the petroleum hydrocarbon constituents benzene, toluene, ethylbenzene, and total ' xylenes (BTEX) were nondetectable. Two soil samples were collected at each end of the gasoline tank. TPHg was 2,000 ppm in ' one sample, and 3,600 ppm in. the other. BTEX ranged from 6.6 ppm to 200 ppm (total xylenes) TPHd was nondetectable in one sample and 1$0 ppm in the other. After the report of this work was completed, a Work Plan for an additional subsurface investigation was submitted to the San Joaquin County Environmental Health Division (USTEC, August 1990) ' Soil Gas Surve In May 1990 a soil gas survey was conducted by USTEC to assist in determining the locations of proposed groundwater monitoring wells and soil borings (USTEC, October 1990) Twenty-eight soil probe vapor points were sampled for concentrations of petroleum Al