Agenda - 10-14-1993 - D 1 - Laserfiche WebLink

Browse Search

Quarry Site One 17 gallon drum of parts washer, considered to be hazardous by current EPA regulations is used or stored upon the property. This single drum is owned by Safety Kleen, and at regular intervals they pick it up for recycling and replace it with a new drum. At the quarry, fuels and lubricants required to operate quarry vehicles and plant equipment are stored. These substances are considered hazardous due to their flammability, According to the Spill Prevention Control and Countermeasures Plan developed for the quarry, these materials include two 10,000 gallon diesel fuel tanks, one 3,000 gallon gasoline tank, one 550 gallon waste oil tank, three 550 gallon bulk oil tanks and one 275 gallon Kerosene tank. All tanks are above ground structures, The diesel, gasoline and waste oil tanks are housed together in a single concrete containment structure with adequate volume to contain a spill from the largest unit, plus freeboard. The bulk oil tanks are housed in a separate concrete containment structure of adequate volume plus freeboard. Crusher oil and kerosene storage drums possess no containment structures due to their small volume. Asphalt Plant Site The storage of liquid asphalt and diesel fuel at the new asphalt plant site has been planned with a number of back-up stages to eliminate potential environmental impacts. The storage tanks will be above-ground, mounted on a concrete pad and surrounded by a concrete containment wall capable of holding the contents of all the tanks at once. The pad will be shaped to direct all internal flows to a concrete sump so that any spilled fuel materials may be removed. Small amounts of fuel would pass on to the oil/water separator, and large amounts could be pumped from this same pipe. The fuel storage area is planned to contain a worst-case spill (the case that all tanks are completely full, and then completely emptied by accident). In front of the fuel storage area will be a large concrete pad on which fuel trucks will park while filling the tanks, and where oil changes on equipment may be performed. Any spills in this area would pass to a sump, and then be sent to the oil/water separator. All petroleum products from the separator will be put in a waste-oil tank which will have its contents regularly removed from the site. The clean water from the separator will be put in a pond containing two devices to protect against oil pollution. The first, an inverted siphon, will allow water from under the pond's surface to be discharged to a settling basin, thereby preventing any oil on the surface of the pond from flowing out. Additional precautions against contamination of the pond involve the placement of oil-absorbing materials on the pond surface to take up any oil on the surface. These materials 3-21