COMPLIANCE INFO_1995-2011 - Laserfiche WebLink

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0 0 1 .0 INTRODUCTION Pacific Excavators has prepared this final report to document the removal of four underground storage tanks at the RMC Lonestar facility located in Tracy, California (Figure 1: Site Location Map). One 10,000 gallon diesel, one 500 gallon waste oil one 1,000 gallon gasoline and one 1,000 gallon diesel underground storage tanks were removed from the property (Figure 2: Site & Sample Location Plan). Pacific Excavators was contracted by RMC Lonestar, Inc. in order to expose the tanks, remove and dispose of the tanks, and contract a third party to collect soil samples for laboratory analyses. 2.0 ITS Pacific Excavators obtained permits and plans necessary to remove the tanks. The excavation areas were marked and the property owner and operator were notified of the specific time plan. An inspector from the San Joaquin County Environmental Health Division and from the San Joaquin County Rural County Fire Department were on site to oversee the tank removal activities. A copy of the Application and Permit to Close Underground Tanks and Rural County Fire permit is included in Appendix A: Permits. 3.0 FIELD ACTIVITIES - TANK REMOVALS On January 23, 1996, in area 1 (see Figure 2: Site &Sample Location Plan) the ground cover was broken and the soil above the 10,000 gallon diesel and 550 gallon waste oil tanks were excavated and stockpiled separately on a concrete surface and covered with plastic. One stockpile consisted of the soil excavated from the diesel tank excavation. The second stockpile consisted of the soil excavated from the waste oil tank. In area 2 (See Figure 2: Site &Sample Location Plan) the ground cover was removed and the soil above the 1,000 gallon gasoline tank was excavated and stockpiled onto plastic. During excavation of the 1,000 gallon gasoline tank a 1,000 gallon diesel tank was discovered. 1