_GENERAL DOCUMENTS - C1981017 (262)

Home Browse Search

[lid-Continent should not significantly afF ..Ct thQ (1ualit;f TO i,l.,•ir,i `y �f water within and adjacent to the permit area (see Section VII of this document) . Therefore, the Coal Basin mines should not adversely affect downstream water users. Surface '.Dater ;Toni tori ng (slid-Continent has been collecti;ig surface water saiw)les from up to ten moniLoriny points on a 1nonthly :),Isis silica 1977 and frornn three points since 1974. The locations of th4-_se sampling points can )e Found on ',-lap IV-0-1 . Now that a water ,duality data base has been establisnfad, the applicant proposes to continue to collect ;a;nples at three point, /`- ('llnl,'�rs 5, and 20, as indicated on Exhibit IV-C-1 ) . The Division 'i a il,)l i cl j at t'1'_ ir,' • t I 1' : l 1'1 :l I ? 1 }Creek above th.. e_ ''� 1' confluence with Coal Cr ; 2) Point ), , 6V e the confluence with Coal Creek, and 3? Point 29, Creek and below the distlrb art.,]. Ti ! !i� lr Cr2ek :aonit•)r-i,ij sit-' i > a control point siilce trvi rf? is no disturbance withi'l tale Sear Creek � �� (� drainage. The Ul1tch situ serves to monitor the effects `ro a ',lines 1 , 2, 3, and 4. The r:o al Creek sampling site serves to [ monitor the overall effects of the mining operation and the effects r associated with Mine No. 5 and the preparations plant area. In adjition to the three sampling sites on the stream% in Coal Basin, the applicant samples discharge from each of the mines plus discharge Front the sediment ponds. There .are 19 discharge points which are sampled i'l compliance with the National Pollutant Discharge Elimination System (NPUES) effluent requirements. The list of sampling locations is presented on pacyes 13 and 19 of ,'1a;)t2r IV of the application. The Division has reviewed tie proposed surface water monitoring program. Every effort was made to tailor the requirements of the monitoring towards the probable hydrologic consequences. At this time, quarterly water quality monitoring is necessary to verify the statement of probable hydrologic consequences (see Section VII of this document) . The applicant has ayraed to auni for surface water, mine discharges, and sediment pony discharges for the following constituents : 7)H 71agnesi u.n Electrical Conductivity Sodium Temperature 3icarbonate and Carbonate or Total otal Suspended Solids Alkalinity Total Dissolve'i Solids l`ate Sodium Adsorption Ratio iron Calcium ,lanuarlesa Tie applicant is currfantly nonitorina surface .water flows at ?Dint Coal Creek. In orier to Differentiate the overall eF e c t S of Ii71eS 1 , !, 3, anh 4 from t.iose of 'dine ' and :;1e preparation plant area, and i,icilit.a�e a .sass oalance analysis of suost.ances aGded to the streams, :'rle j;):) is in, ',•rl l ' •f;il i tQr t'le F io'w 3e ar Cree' and '1UtC:i ^reeK-