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• 6.3.3 Oil and Hazardous Substance Control <br />All company employees are informed of oil and hazardous substances located on the mine site <br />during new employee orientation and later through annual refresher training. A complete set of <br />Material Safety Data Sheets are provided in the lunch room to identify hazards, fire protection <br />methods, first aid treatment, etc. far each chemical at the plant. An updated list of MSDS sheets <br />(chemicals) was submitted to the BLM in 2001. <br />6.3.4 Waste Disposal <br />Common domestic solid waste is collected in containers and periodically transported to an <br />approved landfill. Sewage from the plant is directed to a septic system with drain field. Sewage <br />from temporary port-a-potties is collected and hauled to an off site disposal system. In 2001, <br />• two barrels of lab reagent waste and one barrels of waste oil were shipped to an approved off <br />site facility for treatment and disposal. Lab waste was considered hazardous waste because of <br />chromium and silver content greater than EPA limits. Process wastewater including boiler <br />blowdown, plant washdown, and contaminated precipitation runoff was directed to the process <br />pond. A pump in the process pond allows WRN to recycle the water to the barren system. To <br />remove solids from the process pond a passive removal system was installed in the early fall. A <br />portable pipe was added to the e~asting discharge pipe in order to run excess hot water over <br />built up solids. The theory being to dissolve solids and reprocess them. The wastewater pond <br />stores water from cooling tower blowdown, water softener brine, and blowdown from the water <br />heaters. <br />. 94 <br />