HYDRO28678 - Laserfiche WebLink

Home Browse Search

III IIIIIIIIIIIIIIII STATE OF COLUI~vU DIVISION OF MINERALS AND GEOLOGY Deparlnu•nl ul Ndlura Fesuur~es I I I t Shcrmon $L, Ruum 215 Denver, Colorado 80211.{ Vhone: 17114) 8LbJ587 FAX (1011 NJ1-HIUb October 28, 1997 Ms. Carla Lenkey Colorado Department of Health Water Quality Control Division 4300 Cherry Creek Drive South Denver, CO 80222-1530 RE: Seneca Coal Company (Permit CO-0000221) Water Sample Analysis from 006 Deaz Ms. Lenkey, I~~I~ DEPARTMENT OF NATURAL RESOURCES Ruy Romer Governor lames$ UKhhcarl Esecmni• Duel Inr Michael tl. Long Division Duecmr On September 26, 1997, a water sample was collected by the Division of Minerals and Geology (DMG) at the Seneca II-W Mine at Dischazge Point 006 from the emergency spillway and the primary spillway. The Division recently received the analytical results from our private lab, Analytica Environmental Laboratories. The results aze as follows; I'a~ Spillway Emergency Spillway TSS 36,000 mg/L 64 mg/L SS 240 mg/L ND Iron 400 mg/L 0.77 mg/L According to the Memorandum of Understanding (MOU) between the DMG and the WQCD dated February 9, 1994, DMG will be responsible for enforcing the requirements for design and maintenance of water quality protection structures and minimize disturbance to the hydrologic balance. The WQCD is responsible for enforcing CDPS permit conditions, including effluent limitations. I have included a copy of the MOU for your reference. The Division wrote a Notice of Violation (NOV C-97-015) to Seneca Coal Company for failure to maintain the pond as per the design and passing runoff less than a 10-yeaz/24-hour event through the emergency spillway. The primary discharge structure was plugged with debris, and water was discharging through the emergency spillway. A copy of the violation is attached for your reference. As noted in a letter from Seneca Coal Company neazly five inches of precipitation occurred from September 18th to the 23rd. The emergency spillway sample was collected in the morning of September 26, 1997 and the primary discharge sample was collected at 2:00 p.m., roughly one hour after the spillway was cleaned by mine personnel.