PERMFILE43533

• Permit No: M2007003
• IBM Index Class Name: Permit File
• Doc Date: 4/27/2007
• Doc Name: Gen. Permit- Stormwater Discharges
• From: CDPS
• To: DRMS
• Media Type: D
• Archive: No

Page 3
Permit Na C(X"i-500000
PART!
A. OVERAGE UNDER THIS PERMIT
Industries Covered
Under this general permit, the following types of facilities may be granted authorization to discharge treated process-generated
wastewaters and/or stormwater runoff into waters of [he state of Colorado:
Facilities engaged in the mining and processing of sand and gravel (including rock or stone used as aggregate), and mining and
quarrying of other nonmetallic minerals (except fuels orgraphite), as described by the Standard Industrial Classifecation (SIC) Code
14, and asphalt and concrete batch plants located a[ facilities covered under this permit.
a. Stormwater vs. Process water: When stormwater mixes with process water, the process water limitations (Part 1.B of the
permit) apply to the discharge of that mixed water. Process waters from these facilities are subject to effluent limitations
under 40 CFR 436.
b. Process Water. For purposes ofthis permit, process generated wastewaters include:
1) Product wash waters;
2) Maintenance/equipment wash waters;
3) Transport waters;
4) Scrubber waters (crushers or classifiers);
5) Mine dewatering (groundwater and/or runoff);
6) Other process water as determined by the permit issuing authority;
7) Stormwater runoff from mine or processing areas; and
8) Stortnwater runoff, which mixes with process, generated wastewater before sampling.
c. Stonnwater: The stormwater section (Part I.C ofthe permit) is intended to cover stormwater mnoff from those portions ofa
nonmetallic minerals production operation that are not subject to effluent limitations under 40 CFR 436.
2. Dredee and Fill Operations
This permit doesnot constitute authorization under 33 U.S.C. 1344 (Section 404 ofthe Clean Water Act) ofany stream dredging or
tilling operations.
3. Application Requirements
In order to be considered eligible for authorization to discharge under the terms and conditions of this permit, the owner, operator,
and/or authorized agent of any facility desiring to discharge must submit, by letter or hand delivery, two copies of the discharge
application form, available from the Water Quality Control Division (the "Division"), which generally requires the following
information:
a. Name, address, and descriptive location of the facility;
b. Name of principal in charge of operation of the facility;
c. Name of water receiving the discharge;
d. Description of the type of activity resulting in the discharge including the anticipated duration of activity and/or the
discharge, anticipated volume, and rate of discharge, and the source of water which is to be dischazged;
e. Description ofany wane water treatment system and recycle/reuse utilized;
f. A map or schematic diagram showing the general area and/or routing of the activity;
g. Analysis of the process water to be discharged;
h. Description ofstomtwater discharges, including drainage area;
i. Description of present and proposed best management practices at site, including map;
j. Any existing water quality data on stormwater discharges; and
k. Certification as to the preparation of a Stormwater Management Plan.
4. Application Due Dates
At least thirty days before the anticipated date ofdischarge, the owner (or operator ifthe owner does not operate the facility) ofthe
facility shall submit an application as provided by the Division.