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AMB R I A <br /> upstream of, the pump station Under normal operational practices, the pump station is <br /> periodically turned on to pump the water into the Calaveras River, which is located adjacent to <br /> the pump station At the time of the spill the pump station was not in operation After the spill <br /> occurred, the pump station was secured so that the pumps could not turn on After all of the <br /> storm drain inspections had been conducted and the Iaboratory testing had been completed it <br /> seemed apparent that none of the spilled water traveled very far in the storm drain And since the <br /> pump station had been shut off, none of the water from the storm drain was ever discharged into <br /> the Calaveras River <br /> Volume Released to Receiving Water <br /> Same comments as above <br /> Receivinq Water Impact <br /> Same comments as above <br /> • Remediation <br /> In addition to the clean up described in the OMI report, Cambria made modifications to the <br /> remediation system to prevent future occurrences of this type of incident These modifications <br /> include <br /> • Removing the chlorine tablet float from the holding tank (which interfered with the proper <br /> operation of the level control system), <br /> • Installing a second(redundant)level control switch in the holding tank, <br /> • Modifying the pressure control switch on the salt falters to shut the system off if a high <br /> pressure condition (clogged filters) occurs, <br /> + Installing a pressure differential control swatch to guard against future spalls from other <br /> system components <br /> Water and sediment generated from the clean out of the City section of the storm drain are <br /> contained in storage vessels onsite The sediment has been tested and profiled for disposal and <br /> will be properly disposed of at an approved landfill The water has been tested and found to <br /> contain no gasoline constituents Since the City of Stockton would not allow us to put this water <br /> back into the storm drain, we will run this water through our onsite carbon falters and discharge it <br /> to the sanitary sewer after obtaining a special discharge pernut from the City of Stockton <br /> 0783 4 <br />