PERMFILE50114

• Permit No: M1977326
• IBM Index Class Name: Permit File
• Doc Name: GUIDANCE DOCUMENT SAND & GRAVEL PREPARING A STORMWATER MANAGEMENT PLAN
• Media Type: D
• Archive: No

w
• COLORADO DEPARTMENT OF HEALTH • III IIIIIIIIIIIIIIII
Water Quality Control Division 999
GUIDANCE DOCUMENT: SAND AND GRAVEL
PREPARING A ST0RDIWATER MANAGEMENT PLAN (SWMP)
In this document, [he text in bold italics is quoted directly from the Sand and Gravel general permit application.
The text in straight type is provided as guidance in the preparation of your SWMP.
The requirement to develop a Stormwater Management Plan (SWMP) prior to application for the general permit
applies to all facilities.
The applicant shall develop a SWMP for their facility, and certify in Item 8 of the application that it has been
developed. "fhe SWMP shall be prepared in accordance with good engineering practices. (The plan need not
be completed by a registered engineer.)
The plan shall identify potential sources of pollution (including sediment) which may reasonably be expected to
affect the quality of Stormwater discharges associated with the mining activity. In addition, the plan shall
describe and ensure [he implementation of Best Management Practices (BMPs) which will be used to reduce the
pollutants in Stormwater discharges associated with mining activity. B~iPs are defined as physical, suuaural,
and/or managerial practices that, when used singly or in combination, prevent or reduce pollution of water.
Mining operatians must certify the completion of their SWA'1P, as described in Appendix A of the permit
application. Implementation of the plan will be required at the time that coverage under the general permit.
begins. The Division resen•es the right to request and review the plans. and w require additional measures ro
prevent and control pollution, as needed.
When preparing youc plan, make sure to address each item. If it is not applicable to your site, briefly explain
why. A simple "Not Applicable" is not enough. Also note that the SWMP should include any existing
Stormwater controls at your site, not just new or proposed ones. Txke bill credit fur what you are already
cluing.
.•
The SWMP shall include the following items, at a minimum:
1. Site Map
The plait shall provide a site map ar Wraps which indicate at a rninimunr:
- A4ining site boundaries
- Access and hard roads
- Stonmvater outfidls mid mt outline of the drninnge area of eadt srornnvater outfnll
- An esrinmte ojthe directiorr ojfloty
- Materials lwndling areas
- Each e.risting structural control measure (o reduce pollutants in stonnwnter runoff
- Arens used for storage ar disposal of overburden, materials, soils or wastes
- Areas «sed for mineral milling and processing
- Springs, streams, wetlands and other surface waters
- Location ojnrine drainage or any other process water
- Boundary ojtribwary area (hat is subject to effluent li»rilntions
- Dnte the mnp was prepared