HYDRO27537

• Permit No: C1980001
• IBM Index Class Name: Hydrology
• Doc Name: AUTHORIZATION TO DISCHARGE UNDER COLORADO DISCHARGE PERMIT SYSTEM
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PARTI
Permit No. CO-0032638
Page No. I S
D. SPECIAL REQUIREMENTS
2. Stormwater Requirements (continued)
Pittsburg and Midway Coal Company must implement the provisions of their SWMP as a condition of this
permit. The Division reserves the right to review the plan, and to require additional measures to prevent and
control pollution as needed.
SWMPs which met criteria contained in the previous version of this permit are acceptable.
The SWMP shall include the following items, at a minimum:
1) Descriution of Minine Activities
The plan shall provide a narrative description of the mining and associated activities that took place at the site.
The narrative description shall report the approximate dates of operation, the total acreage within the mine site
and an estimate of the number of acres of disturbed area. A general description of the location of the mining
site relative to major transportation routes and communities shall also be provided.
2) Site Mao
Each plan shall provide a generalized site map or maps which indicate any of the following which may be
applicable:
mining site boundaries and access and haul roads;
- areas used for storage of overburden, materials, soils, tailings or wastes;
- areas used for outdoor manufacturing, storage or disposal of materials;
- tailings piles and ponds;
- an estimate of [he direction(s) of surface Flow;
- existing structural control measures to reduce pollutants in Stormwater runoff; and
- springs, streams, wetlands and other surface waters.
3) Stormwater Management Controls -Identification of Sources and Best Manaeemenl Practices
The SWMP shall identify potential sources of pollutants at the site and assess the potential of these sources to
contribute pollutants to Stormwater discharges associated with mining activities. The SWMP must also describe
appropriate Best Management practices (BMPs) to reduce the potential of these sources to contribute pollutants
to Stormwater discharges. The appropriateness and priorities of controls in the plan shall reflect identified
potential sources of pollutants at the mining site. The description of the BMPs shall include:
a) Stormwater Diversion: Describe how and where Stormwater will be diverted away from potential pollutant
sources [o prevent Stormwater contamination.
b) Sediment and Erosion Prevention: Describe practices that will be used to reduce erosion and prevent
sediment delivery [o State waters. These could include structural (such as silt fences, sediment ponds, drop
swcmres, check dams) and non-structural (such as mulching and revegetation) methods.
4) Comprehensive Inspection
The SWMP shall identify qualified personnel that shall inspect designated areas. Inspections required by this
part shall be conducted annually. Where annual inspections are impracticable, certification is required once
every three years by a Registered Professional Engineer that the site is in compliance with the SWMP.
5) Additional SWMP Items for Sites Seekine Permit Termination
Additional requirements apply in the event that the permittee wishes to remediate the inactive mine site and
terminate permit coverage. If the site is already covered by this permit, the petminee shall notify the Division
as [o the change in status. Notification shall be prior to the implementation of the remediation work, if possible.
The SWMP must be amended [o include the following items, prior [o implementation of the remediation work,
if possible:
a) Documentation of Permission: The plan shall include documentation of permission from the land owner,
if the remediation work is undertaken by someone other than the land owner.