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Chevron THE ALL .N PARK NEWSLE TER KEEPING ALDEN PARK RESIDENTS INFORMED OF CHEVRON'S SOIL TESTING AND CLEANUP EFFORTS. As most of you know, we at Chevron are working Using a portable soil sampling machine about the to clean up oily soil left from an oil reservoir we size of a golf cart, we will collect approximately operated from 1928 to 1957 near what is now seventy soil samples in and around Alden Park over Alden Park. In the late 1980s, when the residual oil a three week period. To obtain the samples, we will was discovered, we conducted soil tests and initiated drill holes approximately two inches in diameter cleanup efforts which continue today. and up to eight feet deep. Each hole will be filled as soon as the sample has been taken, and no lasting Three months ago, we mailed out letters and hosted scars will result from the sampling. The sampling a community meeting regarding a second round of will take approximately two weeks to complete. soil testing we will be doing in your area beginning December 4. Four additional samples, using a larger drill, will be taken from the park itself during the first week of Our initial soil testing in 1986 suggests that the oil January. The resulting holes, approximately two in the ground is not hazardous. However, these feet in diameter and 16 feet deep, will be secured tests did not evaluate the risks of long-term expo- with locked covers, and will remain in the park sure. The upcoming soil tests — being conducted indefinitely. in cooperation with the City of Tracy, the San Joaquin Valley Department of Health Services, the We are committed to cleaning-up the oily soil in Regional Water Quality Control Board and the and around Alden Park, and to an open and honest California EPA—will determine if the oily soil relationship with the residents in the Alden Park poses any health risks to people who live near or area. If you have any questions or concerns, please visit Alden Park. contact us at (800) 338-5434. ALDEN PARK HISTORY Located in what is now Alden Park, Chevron's tar like substance in the soil while planting a tree Tracy Reservoir No. 56 was built in 1928 and on his property. Additional oily spots were also operated until 1957. The reservoir was used as a found in the area. Chevron hired an independent storage site for Bunker C fuel oil, which was environmental consulting firm to conduct an distributed by railroad tank cars throughout the environmental site assessment and evaluate the West. The.reservoir held 750,000 barrels of oil, extent of oily soil. Based on the findings of the was 632 feet in diameter and approximately 25 report, it was estimated that the oily soil is located feet deep. No refining activity was conducted on at depths of six to seven feet and, except the site. northeast corner of the park, within 300 feet of the park's edge. When the reservoir was decommissioned, it was emptied, cleaned and sold to a farmer. Used for Chevron initiated cleanup efforts in 1989. This farming throughout the 1960s, the land was included implementing a dual technology strategy developed into residential property in the 1970s of soil venting and seep collection. To date, and 1980s. Chevron has spent $1.3 million on cleanup efforts and approximately 2,200 gallons of oil In 1986, a homeowner near Alden Park noticed a have been extracted from the ground. Please see other side.