WORK PLANS - Laserfiche WebLink

Home Browse Search

a. Coyner Property Page 2 Tank Closure Report Project 103.5 - August 21,1996 �- The site consists of a parcel (APN 092-190-19-8) totaling about 59 acres located at 4020 Newton Road in a mixed industrial 1 residential area of Stockton, California (see maps in Appendix A). In the land survey grid, the site is located in the northwest quarter of Section 16, T2S,R5E MDB&M and is near latitude 370 46' north and longitude 1210 25' west as shown on the United States Geological Survey topographic map, Stockton West, California Quadrangle, California, 7.5 minutes series. The Property is located in an industrial area of Stockton. Nearby Properties are in use as trucking yards, equipment storage and work yards, a card lock service station, and mini warehouse space. There is also some residential use of the area. �. 2.0 SITE HISTORY The subject site was the former location of Coyner Equipment Co., Lodi Truck Service, and ,r M&M Trucking. The use of the Property included serving and repairing trucks. According to County records, there formerly were two tanks use to store diesel fuel and one L. for gasoline. The former tanks were removed in 1992, and soil samples were collected from each of the tank pits. The tanks were disposed of by Erickson and the rinseate was disposed of by Ramos Environmental. Low levels of petroleum hydrocarbons were found under tanks 3 and 3 and a small amount of xylene was found under tank 2 (see table in Section 3.2). On October 28, 1992 the County PHS/EHD issued a letter stating the level of contaminant in the soil under former tank no. 2 (5,000 gallon gasoline) exceeds allowable limits under the State LUFT Manual guidelines. The letter further stated that additional investigation would be needed. It is believed this letter was a result of a leaching potential estimate (from the `r 1989 State LUFT Manual). Based on the leaching potential estimate, if groundwater occurs at less than 50 feet (as was assumed), no BTEX is allowed to remain in the soil. On March 8, 1994 a second letter was issued which is substantially similar to the October 1992 letter. Responsible party (RP) was advised that the site would be prioritized and that a soil investigation may be directed at some point in the future based on the priority set for the site. To date, no directive for remedial action or additional characterization has been issued, and there has been no notification as to the priority level in which the County has placed the site. 4 3.0 TANK REMOVAL AND SOIL SAMPLING 3.1 Tank Removal On August 20, 1992 the three tanks were excavated and removed by Western Meter Service under County supervision. Confirmation soil samples were collected from the bottoms of r..r Phase One Envirortwental Inc. 2937 Venernan Ave., #B240 Modesto,CA 95356 (209)569-0293 4..