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CENTRAL VALLA- ' REGIONAL WATER QUALITY "ONTROL BOARD INSPECTION REPORT 27 March 2001 DISCHARGER: The Celotex Corporation LOCATION & COUNTY: 400 W. Gandy Dancer Drive CONTACT(S): Lynn Haas [(209) 836-4440] INSPECTION DATE: 21 March 2001 INSPECTED BY: Philip S. Isorena ACCOMPANIED BY: Brian Killoran and Tom Dawson OBSERVATIONS AND COMMENTS: This inspection was conducted to ascertain compliance with the State Water Resources Control Board Order No. 97-03-DWQ, NPDES General Permit No. CAS000001,for Discharges of Storm Water Associated with Industrial Activities. Celotex manufactures a polyisocyanurate rigid foam insulation board which is used in residential, commercial, and industrial buildings. The original chemicals are in liquid form,but after mixing they instantaneously become rigid foam. The process generates dust which is collected, compacted into bales, and disposed of in a non-hazardous landfill. During the inspection, I observed the following storm water quality issues at the site: 1. Evidence of discharge(s) of chiller water, which is non-storm water, into a storm drain (see Figures 1-4); 2. Storage of chemical containers in the raw materials unloading area(Figures 1-4); 3. Drippings of chemicals in the raw materials unloading area near the pumps; 4. Drippings of chemicals onto railroad ballasts from rail tanks during unloading (Figures 5 and 6). Due to historical spills at this and another similar location, this also could be a groundwater quality concern. I discussed the above concerns with Messrs. Lynn Haas, Brian Killoran, and Tom Dawson and suggested ways to address those concerns: put a magnetic mat on the storm drain in the materials loading area to prevent non-storm water from getting into the storm drain during maintenance activities or unloading of materials; chemical containers should not be stored in areas where there is potential for any spilled chemicals to get into the storm drain; drip pans should be placed beneath connectors to rail tanks and pumps to catch drippings during product transfer; and collect a soil sample beneath one of the stained areas along the tracks. The sample should be analyzed using U.S. Environmental Protection Agency's (U.S. EPA) Methods 8260 and 8270.