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TMDL Document for HENSON CREEK - MAINSTEM OF HENSON CREEK, INCLUDING ALL TRIBUTARIES AND WETLANDS, FROM THE SOURCE TO THE CONFLUENCE WITH THE LAKE FORK OF THE GUNNISON, EXCEPT FOR THE SPECIFIC LISTING IN SEGMENTS 31 AND 32.
| TMDL ID: | 38980 | TMDL Name: | HENSON CREEK - MAINSTEM OF HENSON CREEK, INCLUDING ALL TRIBUTARIES AND WETLANDS, FROM THE SOURCE TO THE CONFLUENCE WITH THE LAKE FORK OF THE GUNNISON, EXCEPT FOR THE SPECIFIC LISTING IN SEGMENTS 31 AND 32. | ||
| State/Tribe: | Colorado | TMDL Date: | 07/29/2010 | ||
| EPA Action: | EPA Approved | Comments: | TMDL, LA, WLA, MOS REPORTED ARE LOWEST CALCULATED MONTHLY VALUES FOR FEBRUARY. MONTHLY LAS FOR PALMETTO GULCH ARE PROVIDED AS PART OF THE HENSON CREEK TMDL FOR SEVERAL MONTHS. SEE SUBMITTAL FOR OTHER MONTHLY VALUES. | ||
No TMDL Documents have been uploaded for this TMDL.
TMDL Pollutant: Cadmium
| Total Waste Load Allocation: | .0121 | Total Load Allocation: | .0239 | |
| Explicit Margin Of Safety: | .004 LBS/DAY | Implicit Margin Of Safety: | N | |
| Units for Total Waste Load Allocation and Total Load Allocation: | LBS/DAY | TMDL Pollutant Source Type: | Point/Nonpoint Source | |
| TMDL End Point: | CHRONIC CADMIUM HARDNESS-BASED TABLE VALUE STANDARDS WERE CALCULATED FOR EACH MONTH. A VALUE OF 0.40 UG/L FOR FEBRUARY WAS USED TO CALCULATE THE TMDL. | |||
| NPDES Allocation for Pollutant: Cadmium | |||
| NPDES ID | Other Non PCS Identification | Waste Load Allocation | Units |
|---|---|---|---|
| Abandoned Mining Features |
.0121 |
LBS/DAY |
|
| Listed Water Causes of Impairment for Cadmium Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit. |
|||||
| Waterbody ID | Waterbody Name | Map | Cycles Listed | Cause(s) of Impairment Addressed | |
|---|---|---|---|---|---|
| COGUUG30_6800 | Henson Creek | Waterbody Map | 2008, 2010 | Cadmium | |
TMDL Pollutant: Zinc
| Total Waste Load Allocation: | 2.41 | Total Load Allocation: | 4.74 | |
| Explicit Margin Of Safety: | .8 LBS/DAY | Implicit Margin Of Safety: | N | |
| Units for Total Waste Load Allocation and Total Load Allocation: | LBS/DAY | TMDL Pollutant Source Type: | Point/Nonpoint Source | |
| TMDL End Point: | MOTTLED SCULPIN-BASED ZINC STANDARDS WERE CALCULATED FOR EACH MONTH (HARDNESS DEPENDENT). A VALUE OF 81.8 UG/L FOR FEBRUARY WAS USED TO CALCULATE THE TMDL. | |||
| NPDES Allocation for Pollutant: Zinc | |||
| NPDES ID | Other Non PCS Identification | Waste Load Allocation | Units |
|---|---|---|---|
| Abandoned Mining Features |
2.41 |
LBS/DAY |
|
| Listed Water Causes of Impairment for Zinc Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit. |
|||||
| Waterbody ID | Waterbody Name | Map | Cycles Listed | Cause(s) of Impairment Addressed | |
|---|---|---|---|---|---|
| COGUUG30_6800 | Henson Creek | Waterbody Map | 2008, 2010 | Zinc | |