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RULE 4 PERFORMANCE STANDARDS <br />quality parameters (Temperature, Water Level, pH and Conductivity) will be measured quarterly; samples <br />for laboratory analysis will be collected annually during the second quarter utilizing the paramaters listed <br />below. <br />Annual Groundwater Laboratory Parameters <br />pH Conductivity at 25°C <br />Total Dissolved Bicarbonate (HCO3 -)D <br />Solids <br />Calcium (Ca+)D <br />Magnesium (Mg+2)D Ammonia (NH3) <br />Nitrate Phosphate (PO4'3as P)D <br />Sodium (Na+) <br />Sulfate (SO4 -2)D Arsenic (AS)TO <br />Iron (Fe)D Lead (Pb)TD <br />Manganese (Mn)TD <br />Mercury (Hg)TD Selenium (Se) <br />Zinc (Zn) <br />D = Dissolved <br />TD = Total Dissolved <br />T = Total <br />TR = Total Recoverable <br />4.05.14 Transfer of Wells <br />Please see Section 4.05.14 in Volume 1. <br />4.05.15 Water Rights and Replacment <br />Please see Section 4.05.14 in Volume 1 and Section 2.04.7(2) in Volume 15. <br />4.05.16 Dischrage of Water into an Underground Mine <br />This section is not applicable to the Collom Mine. <br />4.05.17 Postmining and Rehabilitation of Sediment Pond, Diversions, Impoundments, and <br />Treatment Facilities <br />Please see Section 4.05.17 in Volume 1. <br />4.05.18 Stream Buffer Zones <br />Lands within 100 feet, or greater distance if required, of a perennial, an intermittent, or an ephemeral <br />stream with a drainage area larger than one square mile are required to be protected under Rule 4.05.18, <br />unless the Division specifically authorizes surface operations within the stream buffer zone. Stream <br />buffer zones have been identified along Wilson Creek and Jubb Creek, as the drainage area reporting to <br />these streams is larger than one square mile. Colowyo will be developing the Collom Haul Road which <br />will be inside the stream buffer zone on both Wilson Creek and Jubb Creek. <br />The Collom Haul Road will cross Wilson Creek as shown on Map 25E Sheet 1. During construction <br />Colowyo will install a bottomless culvert, and will employ proper best management practices (BMPs) <br />during the construction phase in accordance with Colowyo's approved stormwater management plan, <br />Section 401 certification, and US Army Corps 404 permit. Once construction of the road is completed, all <br />surface water runoff from the Collom Haul Road will be directed to BMPs prior to being released. <br />Collom — Rule 4, Page 11 Revision Date: 4/18/16 <br />Revision No.: PR -04 <br />