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REVISED <br /> Table E3 Proposed Water Quality Parameters <br /> Parameter Standard Parameter Standard <br /> Aluminum' 5 mg/I Lithium' 2.5 mg/I <br /> Arsenic' 0.1 mg/I Manganese' 0.2 mg/I <br /> Beryllium' 0.1 mg/I Mercury' 0.01 mg/I <br /> Boron' 0.75 mg/I Nickel' 0.2 mg/I <br /> Cadmium' 0.01 mg/I Nitrite (NO2- N) 10 mg/I <br /> Chromium' 0.1 mg/I Nitrite& Nitrate (NO2+ NO3- N)' 100 mg/I <br /> Cobalt' 0.05 mg/I Selenium' 0.02 mg/I <br /> Copper' 0.2 mg/I Vanadium' 0.1 mg/I <br /> Fluoride' 2 mg/I Zinc' 2 mg/I <br /> Iron' 5 mg/I pH 6.5—8.5 <br /> Lead' 0.1 mg/I Total Dissolved Solids (TDS) TBD based on background TDS values <br /> (mg/1) <br /> ' Measured as dissolved concentrations.Sample is filtered through a 0.45-micron membrane filter prior to preservation. <br /> The operations will be conducted pursuant to a site-specific SWPPP, SPCC, and other industry standard <br /> BMPs. The operation will comply with all applicable requirements of surface water and groundwater <br /> classifications and standards by the WQCC. <br /> 3.1.8 Wildlife—Mining operations will take into account the safety and protection of wildlife on all project <br /> area lands and at road crossings on Weld County Road (WCR) 91. See Exhibit H for additional information <br /> regarding wildlife. <br /> 3.1.9 Topsoiling—When available,topsoil shall be removed and segregated in stockpiles to be used during <br /> reclamation activities. If necessary,the topsoil stockpiles shall be vegetated within 180 days to protect <br /> from erosion. Where practicable, woody vegetation shall either be removed from or appropriately <br /> incorporated into the existing topsoil prior to excavation within the project area.Topsoil stockpiles shall be <br /> stored near the mining perimeter or in other minimally disturbed areas and will remain undisturbed until <br /> used during reclamation activities.A conceptual location of the stockpiles in year 5 of operations is <br /> included in Exhibit D1, Mine Plan Map. Once used, appropriate grading and surface roughening will occur <br /> to maximize topsoil stability. <br /> Should the existing topsoil be deemed of insufficient or poor quality as to not be able to sustain vegetation, <br /> and if other materials can be shown to be more suitable for vegetation requirements, Black Mountain will <br /> remove, segregate, and preserve in a like manner such other materials which are best able to support <br /> vegetation. Black Mountain plans to revegetate the land in general conformance with the surrounding <br /> lands and pursuant to recommendations from Colorado Division of Reclamation, Mining and Safety <br /> (CDRMS) and Weld County. <br /> Topsoil will be replaced as evenly as possible and is estimated to range from 1-2 feet, depending on how <br /> much is recoverable during stockpiling activities.Topsoil shall be amended with fertilizer or compost, as <br /> necessary. <br /> All vegetative piles will be removed from the affected lands prior to final reclamation of the affected lands. <br /> 8 <br />