HYDRO29729

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 10/29/2004
• Doc Name: 3rd Qtr 2004 DMRs
• From: Western Fuels-Colorado
• To: DMG
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

RECEIVED
26 October 2004
Western Fuels-Colorado
P.O. Box 628
Nucla, Colorado 81474 Colorado Department of Public Health and Environment
Water Quality Control Division
Telephone [phone] permits and Enforcement Section
Fax [phone] WQCD pE-B2
4300 Cheny Creek Drive South
Denver, CO 80222-1530
Attn: Jeff Coombe
RE: 3rd Quarter 2004 NPDES Monitoring Report
New Horizon Mine Permit Number CO-000213
OCT 2 9 200
Division of Minerals 8 Geology
Enclosed is the 2004 third quarter NPDES report for Sediment Containment Ponds
007, 008, and 009. Ponds 007 and 008 discharged during the monitoring period, and
with the exception of iron, all water quality monitoring criteria were within permit
standards.
NPDES 007 met the 0.30 mg/L discharge threshold for iron (tot) in July and exceeded
it for August and September, with 0.45 and 0.31 mg1L respectively. The outfall has
three water sources: 1) water pumped from the pit, 2) irrigation runoff from the Nucla
CCC ditch and 3) imgation runoff from Calamity Draw. Both sources 2) and 3) are
not currently quantifiable as they have a number of undetermined factors. We do
meter the pit water pumped to the NDPES 007 pond. By the time the contract lab
(ACZ) reported the iron values for August and September, the irrigation season was
over. Concurrent with the October sampling, we sampled the only remaining water
source, the pit water. Both these sample values are pending and will be reported to
you when they become available.
NPDES 008 was opened in mid-June this summer and discharged periodically until it
was closed for at least the year on 28 September. All values with the exception of the
September value for iron (tot) Inet discharge requirements. The September iron value
was 0.31 mg/L. The only water source for NPDES 008 is irrigation runoff from the
Nucla CCC ditch.