Laserfiche WebLink
E~ ~-ECq Seneca Coal Company <br />S Coaf Compar~• <br />r,pril S, 2001 <br />Tangy a V7atson <br />Colorado Department of Health <br />Y+~CD-CMDM-B2 <br />q?~0 C'::zrry Creek Drive South <br />RE: ~vR Mistakes for Permit CO-0000221 <br />)ear Ms. Watson, <br />Phis letter serves to follow up cn cur phone conversation last <br />M1eek concerning the mistakes I found on the first quarter 2001 <br />~MRs for Colorado Discharge Permit CO-0000221 for the Seneca Mine <br />_orcpiex. For Points 004, 005, 006, 009 and 011, the following <br />nistakes were Eound. Page 1: the monitoring period for pH was for <br />March only lit should be for the entire quarter) . Page 2 ITSS, <br />STS, iron and O/G (lab value)? is OK. Page 3: the monitoring <br />period for flow was for March only (acain, it should cover the <br />entire quarter. Page 4 (TCS) is OK. Page 5: Oil/Grease (O/G) <br />visual, the monitoring period is for March only (again, it should <br />cover the entire quarter). Data on these five pages would fit <br />onto two pages if the DMRs were correct. <br />Ail of the mistakes noted above were found only in the first <br />quarter, the rema~nirg quarterly DMRs were found to be correct. <br />I suspect that these mistakes are a hold over from monitoring <br />frequencies that existed prior to our last amendment in 1999. <br />?YlOr to that amendment, the monitoring frequency for pH, O/G and <br />flow, for tt-,e points mentio:•:ed in the previous paragraph, was <br />monthly in January and February and weekly in March. Since Che <br />1539 arnerdment, the monitoring frequency is monthly year-round. <br />also noted the same mistakes on the first quarter 2000 DMRs. <br />ror Points 012, 013, 014, 016 and 017, the correct monitoring <br />frequency Eor pH is weekly (not monthly>. For those same points, <br />the WET test requirements are for both Ceriodaphnia and <br />Pimepha].es, while only Ceriodaphnia is listed on the DMRs. Both <br />Chose mistakes (pH and WET tests) were found on DMRs for all four <br />quarters, not just tY.e first quarter. <br />I have already completed the first quarter DMRs, making <br />corrections to the mistakes noted above. I currently have on <br />file blank Db?Rs up to the end of the year. You may rerun those <br />if you feel _.. is necessary, although I have no problem with <br />„e;rn the r_;ma-:r.ina CvRs. Correcting those mistakes is manor. <br />Seneca Coel Company • P.O. Drawer D • Hayden, Colorado 81639 <br />Telephone (970)276.3707 FfUf(970)276.301a <br />