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• -15- <br />VI. HodroloQic Ea lance: Ground Water - Rules 2.04.5, 2.04.7, 2.OS~b(3), <br />and 4.05 (can't) <br />Examples of the t}'pe of inflow report requested are on file at the Division <br />office (see inflo~: reports for the U.S. Steel Sommers et I.1ine and ldestern <br />Slope Carbon's Hawk's Nest Pfine). <br />An alluvial ground water aquifer has been identified zlong East Salt Creek. <br />Afonitoring wells established in the alluvium: indicate that alluvial water <br />levels fluctuate seasonally in response to flora in East Salt Creek. Data <br />collectec by the applicant from the Salt Creek alluvial aquifer thus far <br />indicate a carbonate-sulfate type water, similar to the characteristics <br />of the surface water in the system as caould be expected. No significant <br />adverse affects on ground water are anticipated for this operation. <br />Salt Creek *fining Compam• intends to monitor this aquifer upstream and <br />docrostream of the mine to identify am• effects from mining. The Division <br />therefore requires the fellocring stipulation to verify it's conclusions: <br />5. TH.E PER?fITTEE S,'ILL CONTINUE t10NIT0RII:G YELLS Gi,'-1 AND Gld-4 IN SALT <br />CREEK ALLUI'IIJ`i QUARTERLl. AT THESE TII•iE5 THE i+'ATER LEVEL IA' THE <br />SdELLS WILL BE 1•fEASURED AND SAMFLES 1;ILL BE TAKEit FOR Ai\AL15IS OF <br />pH, TENL-ERATURE AND SPECIFIC CONDUCIz'dCE. THE RE511LT5 OF THIS <br />?lONITORING kILL BE SUB?•iITTED TO THE DIVISION L*L"1EDIATELT AFTER <br />DATA COLLECTION AND ANALISIS. <br />VII. P1luvial Valley Floors - Rules 2.06.8 and 4.24 <br />Sufficient information was provided b~ the applicant to determine that East <br />Salt Creek is an alluvial valley floor. Unconsolidated alluvial deposits <br />have been identified which are extensive enough to qualif.• as alluvial valley <br />floors. The e::istence of agricultural activities in the vicinity of the <br />operation is evidence of the potential for irrigation. <br />Alluvial Valley Floor Findings with Regzrd to Farming- <br />Physical disturbances created by the operation which will directly impact the <br />alluvial valley floor are road construction and a proposed sedimentation <br />pond. The road construction attributable to the operation consists of <br />widening of an existing ranch road leading to the portal area. The <br />sedimentation pond will be constructed at the mouth of *1cClzne Canven withir. <br />the area mapped as unconsolidated alluvial deposits. <br />As stated on page 4-4 (Volume 1) of the application, the total disturbance <br />of the AVF related to the road erpansier. and construction of the sediment <br />pond is appro:~:imately one acre. The total area of alluvial valley- hoer <br />~~ithin a one-half mile radius of the confluence of P1cClane Canyon and East <br />Salt Creek (as mapped by the applicant) is approximately 145 acres. <br />Appro>:ima[ely seven-tenths of one percent of the AVF contained withir. this <br />area will be affected by the surface disturbance related to the operztion. <br />