HYDRO22137

• Permit No: C1981019
• IBM Index Class Name: Hydrology
• Doc Date: 5/10/1999
• Doc Name: MEMO COLOWYO LETTER TO CDPHE 4/26/99 COLOWYO COAL CO LP PN CO-0045161 1ST QTR 1999 DISCHARGE MONITOR
• From: DMG
• To: DMR FILE C-81-019
• Permit Index Doc Type: CORRESPONDENCE
• Media Type: D
• Archive: No

iii iiiiiiiiii
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY .
DCI)aflnA'nl UI N.lWnl R250UfC25
131 } $hcrman $f , Ruom ? 15
Denver, Co7uradu 80303
Phone: 130]1 866-3567
FAX: [phone]
Interoffice MEMORANDUM
to: DIv1R file, C-81-019, cc: Dan Hernandez
~~ K~
from: Byron G. Walker
subject: Review of 1Qtr 1999 DMR, C-81-019
date: 10 May 1999
DIVISION O F
MfNERALS
GEOLOGY
RECLAMATION
MIN ING•SA FE 7Y
Bil I Owens
Governor
Greg E Watcher
E.ecunve Dnenor
M¢hael B. Long
Division D~cecmr
re: Colowyo letter to CDPHE, April 26, 1999, Colowyo Coal Company L.P.
(Colowyo); permit No. CO-0045161 First Quarter 1999 Discharge Monitoring Report, with
attachments.
The 1" Quarter 1999 DMR reports were reviewed.
Outfall 001 A (Streeter Pond). This pond was reported as having discharged, All parameters were
reported as within allowable primary limits. Discharges from the Streeter Pond were observed at
the time of the 20 January and 18 February CDMG inspections.
Outfa11002A (Facilities Area Pond). This pond was reported as having no discharge.
Outfall 003A (Loadout Pond). This pond was reported as having no dischazge.
Outfall 004A (Gulch A Pond). This pond was reported as having no dischazge.
Outfall OOSA (Stoker Coal Pond). This pond was reported as having dischazged. All parameters
were reported as within allowable primary limits.
Outfall 006A (Rail Loop Pond). This pond was reported as having no discharge.
Outfa11007A (Prospect Pond). This pond was reported as having no dischazge.
Outfall 008A (West Pit Pond). This pond was reported as having no dischazge.
Outfall 009A (Section ib Pond). This pond was reported as having no discharge.
Outfall O10 A (Taylor Creek Pond). This pond was reported as having dischazged. Total suspended
solids were reported as 40 mg/1 maximum, under the allowable primary limit of 70. Average was
reported as 40 mg/I, over the 30 allowable primary limit. By the referenced letter, Colii~wo
requested that the Alternate Limits apply. Kimberley Wolf explained (during a coal partial
inspection ofColowryo) to Byron Walker the derivation ofthe average value. Byron Walker brought
to Kimberley Wolf s attention that the Total Iron value of 8.35 mg/I s 7.0 maximum primary limit.
By telephone call of 5/5/99, Kimberley Wolf added Total Iron to the request for application of
Alternate Limits.
The CDMG inspections for 20 January and 18 February reported no discharge from the outfalls other
than Streeter Pond.