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ResponseSpill and <br /> CountermeasuresNEWMONT •r the Cresson Project <br /> NORTH AA'4'FP/CA <br /> .• Relations <br /> 4.3 Midway Fuel Farm <br /> The MIFF is located south of Ironclad Facilities as shown on Figure 4. Locations of SPCC regulated and nonregulated <br /> AST storage are depicted in Figure 4 and listed in Table 4.An SOP for fueling heavy equipment is included in <br /> Appendix H. <br /> 4.3.1 Material Storage/Secondary Containment <br /> Over 200,000 gallons of petroleum products can be stored in the tanks and containers at any point in time. For the <br /> MIFF secondary containment is provided by an underground sump filled with coarse rock with a porosity of 20%. <br /> Since the volume of the sump is 13,850 cubic yards,the calculated volume of containment considering porosity is <br /> 560,000 gallons—which is sufficient to contain the volume of the largest tank. <br /> 4.3.2 Potential Spill Scenarios, Volumes and Direction of Flow <br /> There are several potential spill scenarios at the MIFF including(but not limited to): <br /> (1)Tank damage or rupture-very unlikely,and depending on the season,the spill would either be captured by <br /> infiltration into the lined containment area or, in cold weather,the spill would flow overland to the north and <br /> follow the road towards the Ironclad Facility and NITS. <br /> (2) Hose rupture during filling of vehicles-possible in fueling area on one of the pads; <br /> (3)Spillage during off-loading from tanker truck; and <br /> (4)Spillage during the fueling of large mining equipment-likely if equipment moves during fueling operations or if <br /> operator does not pay attention to details such as replacing fill hoses and staying with vehicle during fueling. <br /> Should any of the above scenarios actually take place the volume of petroleum products or antifreeze is <br /> anticipated to be on the order of<5 to several hundred gallons. <br /> The overall spill potential from oil-filled electrical transformers is low.The units are new, modern installations,and <br /> are mounted on concrete slabs. <br /> 4.3.3 Discharge Prevention <br /> CC&V's Mine Maintenance Department has published an SOP for the MIFF.This procedure can be found in <br /> Appendix H and includes a section for discharge prevention (Section 6.0 of SOP). <br /> 4.3.4 Spill Response Procedures <br /> Section 5.0 provides the general spill response procedures for use at the MIFF.The following narrative provides <br /> additional detail on spill clean-up. <br /> Clean-up of Small Spills-Water captured inside the MIFF secondary containment cells will be removed on a regular <br /> basis. If the water has an oily sheen, it will be removed and treated through the oil skimmer located at the NITS <br /> Wash Bays.Absorbent pads are available in the warehouse and on mobile fuel/lubricant trucks to assist in cleaning <br /> up minor spills. <br /> Free liquids with an oily sheen that are collected in the MIFF sumps will be pumped into appropriate containers. <br /> Oily liquids will be hauled to the oil skimmer sump located at the NITS Wash Bay or shipped off site for recycle. <br /> Liquids that contain antifreeze will be place in totes or drums and shipped off site to a recycling facility. <br /> 4.3.5 Tank Integrity Testing <br /> Tank integrity testing will be performed according to the plan provided in Appendix G and the requirements <br /> summarized in Section 3.5.4. <br /> ------------ -- ---- --- --- - - -- -- - - -- - ----- -- ------------- ----- -- -- --- -- - - <br /> Department THIS DOCUMENT IS UNCONTROLLED IN HARDCOPY FORMAT Doc Id.NA CCV-SER-PLAN- <br /> 1930 <br /> »>.. - - - -- ------------- <br />