Laserfiche WebLink
to the extent he is able, to locate the plant on less permeable ground (to prevent oil from <br /> seeping into the groundwater, should their be a spill), and in an area unlikely to be flooded. <br /> In addition to proper plant location and site grading, the mobile diesel tanks will be <br /> surrounded by an earthen berm constructed of compacted native materials with a minimum <br /> of 15% clay passing the No. 200 sieve. If the material does not have sufficient clay content, <br /> the bermed area will be lined with plastic. The berm will be of sufficient size to contain at <br /> least 11,000 gallons (110% of the largest tank's capacity), for the diesel trailer, or 33,000 <br /> gallons if the same berm encloses the asphalt cement trailers. If the maximum tank size <br /> changes, the Plant Manager will adjust the berm area capacity to accommodate the tank <br /> volume. <br /> Hose connections should also be located within the berm's perimeter. <br /> 3.1.3 Drainage Control <br /> Diked areas will be monitored for accumulation of stormwater, and pumped out if necessary. <br /> Any pumping or discharge of stormwater will be recorded on the Drainage Discharge Form in <br /> Appendix 4. The person discharging the stormwater will first inspect the water for any signs <br /> of oily sheen, and take corrective actions, if necessary. <br /> 3.1.4 Bulk Storage Tanks <br /> 112.8(c) (6) Test each aboveground container for integrity on a regular schedule, and whenever you <br /> make material repairs. The frequency of and type of testing must take into account container size and <br /> design (such as floating roof, skid-mounted, elevated, or partially buried). You must combine visual <br /> inspection with another testing technique such as hydrostatic testing, radiographic testing, ultrasonic <br /> testing, acoustic emissions testing, or another system of non-destructive shell testing. You must keep <br /> comparison records and you must also inspect the container's supports and foundations. In addition, <br /> you must frequently inspect the outside of the container for signs of deterioration, discharges, or <br /> accumulation of oil inside diked areas. Records of inspections and tests kept under usual and <br /> customary business practices will suffice for purposes of this paragraph. <br /> Visual observation will be used to observe releases from tanks. In addition, integrity testing <br /> will be performed on the 10,000-gallon diesel and asphalt cement tanks every 10 years <br /> beginning in 2010 or as judged to be prudent based on tank conditions. <br /> 112.8(c) (8) Engineer or update each container installation in accordance with good engineering <br /> practice to avoid discharges. You must provide at least one of the following devices: <br /> (i) High liquid level alarms with an audible or visual signal at a constantly attended operation or <br /> surveillance station. in smaller facilities an audible air vent may suffice. <br /> (ii) High liquid level pump cutoff devices set to stop flow at a predetermined container content level. <br /> (iii) Direct audible or code signal communication between the container gauger and the pumping <br /> station. <br /> (iv) A fast response system for determining the liquid level of each bulk storage container such as <br /> digital computers, telepulse, or direct vision gauges. If you use this alternative, a person must be <br /> present to monitor gauges and the overall filling of bulk storage containers. <br /> (v) You must regularly test liquid level sensing devices to ensure proper operation. <br /> Note: In order to provide adequate fail-safe engineering, redundancy should be employed. Inventory <br /> control and "sticking"are not adequate methods unless a second form of overfill prevention is utilized. <br /> Portable Gencor Asphalt Plant Page 6 <br /> SPCC Plan August 31, 2005 <br />