Laserfiche WebLink
SERVICES <br /> L <br /> VVV SE P 2 2 1987 <br /> June 12, 1987 ENVIROMENTAL HEALTH <br /> FERMIT/SERVICES <br /> California Regional Water <br /> Quality Control Board <br /> Attn: Patricia H. Leary <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, CA 95827-3098 <br /> RE: Delta Truck Sales <br /> Dear Ms. Leary: <br /> SITE HISTORY <br /> The pit was opened in approximately 1970. This was accomplished by use of a <br /> bulldozer scraping out a roughly rectangular pit with various dimensions of <br /> approximately 20 feet by 40 feet with the depth ranging from 4 feet to 8 feet. <br /> The approximate capacity being 36,000 gallons if completely full. Delta <br /> insists the pit contained no more than 12 inches to 24 inches of water/oil <br /> at any time. The pit was not lined with any clay or sheeting, the bottom <br /> consisted of natural sandy/clay soil. <br /> The pit was operated until approximately March, 1985. At this time, the pit <br /> was filled with dirt and rubble from local construction and a covering <br /> of 3/4 inch S/P/A/B road base (sandy clay with 3/4" crushed rock) approxi- <br /> mately 8 inches to 12 inches thick was overlaid on the entire area. <br /> PIT USAGE <br /> The pit was used solely by Delta Truck Sales (formerly Delta White Truck <br /> Sales) for disposal of the water and oily sludge from the truck shop steam <br /> clean area. Delta Truck insists they have always used biodegradable steam <br /> cleaning soaps and have never used any solvents to steam off the truck chassis <br /> and parts. Approximate daily inflow would vary from zero gallons to a few <br /> hundred gallons. Delta claims they cannot be more specific. <br /> PRESENT SYSTEM <br /> After close out, Delta has been using a system consisting of three oil <br /> separators and a 100 foot leech line. The system was designed in-house <br /> and constructed by Delta Truck Sales. <br /> The first two oil separators consist of 36 inch cisterns connected in series. <br /> The last separator consists of a concrete septic tank. The leech line con- <br /> sists of approximately 40 feet of non-perforated PVC pipe 6 inches in diameter <br /> leading from the tank and connected to 100 feet of 6 inch diameter PVC <br /> perforated pipe laid in gravel. <br /> 175 Industrial Way • Benicia, CA 94510 • (707) 746-7966' <br />