2013-01-29_PERMIT FILE - C1981022A (3)

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Saziar - 2.05.4 • Waste oil and spent solvents • • Transformer oil • Trash, used equipment pare, cable, conveyor belting, and tires • Demolition debris resulting from facility demolition during reclamation Historic mining operations included the use of picking tables to separate roof tack and parting material from the coal. The resulting coal refuse was placed in the East Yard area and mixed with soils and other surficial materials. The picking tables were removed in 1969 and mine development and mining wastes and coal refuse resulting from coal screening operations has subsequently been placed in the two designed coal mine waste piles. Sampling and testing of both in place coal refuse and mine roof and floor materials have resulted in no indications that these materiak are or will be potentially acid-forming or toxic-producing. Based on laboratory analysis results, pH values for the sampled materials tend to be slightly to moderately alkaline, overall sulfur content is low, potential buffering capacity is high due to significant quantities of calcium, and potentially toxic components, including potentially soluble metak, are low. Detailed discussions of material sampling results and coal mine waste disposal practices are presented in Sections 2.04.6, Geology Description, and 2.05.3, Coal Mtrte Waste and Non-Coal Processing Waste. Other than the historic picking table and more recent coal screening operations, no coal processing has or will cecur. There u some potential that highly cazbonaceous coal mine waste materiak, stockpiled coal, or waste coal materiak could self-ignite through spontaneous combustion or be ignited by ernemal sources (lightning or other) and bum. Handling and placement practices for coal mine waste, including controlled placement and compaction, drainage and runoff control, and placement of suitable non- • flammable cover are designed to and have been effective to date in min'mi>ing any risk of ignition. Since any waste coal (coal that has been contaminated by muting with soil or other non-coal materials) is handled and placed in the coal mine waste piles, the same considerations apply. While stockpiled coal does have some inherent risk of combustion, this risk is minimi~rd through effective management and monitoring of the coal stockpile(s). Generally, coal residence time in the coal stockpile u limited by continuous ongoing stockpiling and reclaim operations. Nominal stockpile management practices include dozing of coal from dead storage areas to live storage areas and coal reclaim drawpoints, regulaz equipment operations over the entire stockpile to minim;~r air pockeu and voids, and regular visual inspection and infrared scans o[ stockpile areas to detect and delineate any potential hot spots. In the unlikely event that combustion of either coal mine waste or stockpiled coal is detected, OMI would immediately take steps to extinguish in place and/or separate and extinguish the hot or burning material. Generally, this would involve using the coal reclaim system and/or mine equipment to remove the hot or burning material and the mine water truck to wet down and extinguish the material Once extinguished, the material would be allowed to dry out and would be placed in the coal mine waste pile and covered. To the extent reasonably feasible, OMI has attempted to eliminate or reduce the use of potentially hazardous or toxic materials in their ongoing operations. Waste reduction efforts have included switching to non-toxic citrus-based solvents and non-toxic antifreeze and installation of a waste oil burner in the mine shop facility for heating. All fuel, oil, lubricants, and other potentially hazardous or toxic materiak are stored and used in full compliance with apphcable regulatory provisions. In addition, OMI trmaintains full compliance with applicable Clean Water Act, SARA, and EPCRA . planning and reporting requirements. Any excess waste oil not burned in the waste oil burner and small quantities of spent solvents are collected and temporarilystored in approved tanks or containers in the shop/wazehouse area for periodic pickup and disposal by a license waste disposal contractor. All electrical transformers on the site are either newer non-PCB containing transformers or have been inspected and certified as meeting applicable thresholds for PCB concentrations. PR04 2.05-68 Revised August 2000