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6.0 SPECIFIC REQUIREMENTS [40 CFR 1128 (a)-(d)] <br />6.1 Onshore Facility Requirements [40 CFR 112.8 (a)] <br />The general requirements listed in 40 CFR 112.7 are addressed in Sections 5.1-5.8 of this Plan. <br />The specific requirements listed in 40 CFR 112.8 are addressed below. <br />6.2 Facility Drainage [40 CFR 112.8 (b)] <br />None of the diked areas at the facilities are equipped with drainage valves and no flapper-type <br />drain valves are used to drain diked areas. <br />Precipitation that accumulates within the diked areas is visually inspected for a sheen, and, if <br />none is present, the water is allowed to evaporate or the water is removed using a vacuum truck. <br />Removed water is disposed of in accordance with applicable local, state, and federal regulations. <br />If water must be released from diked areas via a pump, the responsible personnel visually inspect <br />the water in the containment structure and note the appearance of the water in the Secondary <br />Containment Drainage Log included in Appendix B of this SPCC Plan. This log is also used to <br />record the name of the employee draining the containment as well as the date, time, and <br />approximate quantity of water removed. The discharge is monitored through the entire drainage <br />event. <br />6.3 Bulk Storage Tanks [40 CFR 112.8 (c)] <br />(1) All tank materials and construction are compatible with the stored oil at storage <br />temperature and pressure. <br />(2) Bulk storage tanks have a secondary means of containment for the entire capacity of the <br /> largest single container and sufficient freeboard to contain precipitation. All diked areas <br /> are also sufficiently impervious to contain discharged oil. <br />(3) Discharge of storm water is discussed in Section 6.2 of this Plan. <br />(4) There are no reported underground oil storage tanks at the facilities. <br />(5) There are no reported partially buried oil storage tanks at the facilities. <br />(6) Denison Mines performs monthly in-service external visual inspections for any oil <br />outside the tank, especially at seams, joints, and piping. Monthly and annual inspections <br /> of the facilities generally follow Tables 5 and 6 in Appendix B. <br /> Denison Mines will also test each aboveground storage tank for integrity every 10 years <br /> , <br />and whenever material repairs are made. This integrity testing will combine visual <br /> inspection with another testing technique such as hydrostatic testing, radiographic testing <br /> , <br />ultrasonic testing, acoustic emissions testing, or another system of non-destructive shell <br />testi <br />Th <br />f <br /> ng. <br />e <br />requency and type of testing will take into account container size and <br />Denison Mines (USA) Corp. 26 SPCC Plan <br />Sunday Mines December 2007