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-24- <br /> of this document. At this time, no bedrock ground water monitoring is <br /> required because the anticipated insignificant impacts do not warrant the <br /> cost of drilling to such great depths (2,000-3,000 feet) . Therefore, the <br /> applicant will only monitor alluvial ground water. <br /> All observation wells will be monitored on a quarterly basis. Water <br /> levels and samples will be taken. Water samples will be analyzed for the <br /> following constituents: <br /> pH Magnesium <br /> Temperature Sulfate <br /> Specific Conductivity Iron <br /> Total Dissolved Solids Manganese <br /> Bicarbonate Mercury <br /> Calcium <br /> The proposed operation is in compliance with the requirements of this <br /> section. <br /> VII. Probable H drolo is Conseq uences of Minin5 and Cumulative <br /> H dro ogic Impacts Study - Rules 2 U5 b 3 and 2 07 6 2 (c) <br /> This Cumulative Hydrologic Impact Study (CHIS) for the drainage basin of <br /> the Roaring Fork River has been prepared by the Colorado Mined Land <br /> Reclamation Division (CMLRD) pursuant to Rule 2.07.6(2) (c) . This CHIS <br /> assesses the probable cumulative hydrologic impacts of all anticipated <br /> coal mining operations upon the general area of the Roaring For Der <br /> Valley (Figure 1 ). Included in this ass sment are all existing c <br /> mines and those proposed cod mines for vhich permit applications have <br /> been submitted to the Division This study has been prepared using <br /> information and analysis con rained in the Coal Basin mines permit <br /> application, information and analysis contained in other permit <br /> applications of mines located in the general area and other available <br /> information, including site visitation by members of the Division staff. <br /> Coal mining operations in the study area include: <br /> 1 . Garfield Energy Corp. - Sunlight Mine, CMLRD File No. C-046-81 <br /> 2. Snowmass Coal Company - North Thompson Creek Mines, CMLRD File <br /> No. C-025-81 <br /> 3. Mid-Continent Resources, Inc. - Coal Basin Mines, CMLRD File <br /> No. C-Ul i-81 <br /> Mid-Continent will be undermining the headwaters of Muddy Creek a � <br /> Ids tributary of the North Fork of the Gunny'son.- The nd�r� rgu, fir' ' <br /> i ;f that point will be over 2,000 feet be l dw �i�"ground'f�"u`r ac 142XV n <br /> effects are projected to be small , therefore, this portion of the Coal a n 3 <br /> t Basin mining eoeration will not be considered in the cumulative <br /> w hydrologic impact assessment. The other two :nines are entirely within <br /> the Roaring Fork drainage basin. <br />