2010-09-13_HYDROLOGY - M1981185

• Permit No: M1981185
• IBM Index Class Name: Hydrology
• Doc Date: 9/13/2010
• Doc Name: WQCD Report May Day Mine
• From: CDPHE
• To: Wildcat Mining Corporation
• Email Name: WHE
• Media Type: D
• Archive: No

STATE OF COLORADO
Bill Ritter, Jr., Governor op•col
Martha E. Rudolph, Executive Director w o?
Dedicated to protecting and improving the health and environment of the people of Colorado yam' I \ o
4300 Cherry Creek Dr. S. Laboratory Services Division R C 9V ** p **
Denver, Colorado 80246-1530 8100 Lowry Blvd. 187e +
Phone [phone] Denver, Colorado 80230-6928
TDD Line [phone] [phone] C?? 3010 Colorado Department
Located in Glendale, Colorado `??
f Public Health
http://www.cdphe,state.co.us Divl tui+ ul r??=??6+tlatlQ?dEnvironment
tAf*,g and Suety
August 19, 20 10
CERTIFIED NO: 7005-1820-0000-3213-2851
Mike Clements, Owner ?G? ._ort
Wildcat Mining Corporation M M(ke
108 Linda Court
Durango, CO 81301
Re: Stormwater Permit Requirements for Construction Activities/Compliance Advisory
Wildcat Mining Corporation-Idaho Mine and May Day Mine and Mill site construction activities
La Plata County
Dear Mr. Clements:
It has come to the Water Quality Control Division's (the Division) attention that Wildcat Mining
Corporation is engaged in a construction activity that is included under the stormwater regulations. The
Division conducted an inspection of the above-referenced construction activity on June 30, 2010. A report
documenting the inspection is attached. The Division has no record that Wildcat Mining Corporation has
applied for or obtained a stormwater discharge permit for the above-referenced facility.
In 1987, the US Congress amended the Clean Water Act to expressly include stormwater discharges from
industrial and construction sites as requiring Clean Water Act controls. In 1990, EPA issued regulations
that require specific industrial and construction activities to obtain permits in order to discharge
stormwater from their facilities. The Water Quality Control Division of the Colorado Department of
Public Health and Environment has direction and authority to administer the stormwater permit program
in Colorado through the Colorado Water Quality Control Act, and its implementing regulations and
permits.
Pursuant to 5 CCR 1002-61.3(2), stormwater discharges from construction activities that result in one or
more acres of land disturbance, or are part of a larger common plan of development or sale that will
ultimately disturb one or more acres over a period of time, are specifically included. For these
construction activities, stormwater discharge permit coverage is required from the time that ground is
broken, until the site has been finally stabilized, that is, when all soil disturbing activities at the site have
been completed, and a uniform vegetative cover or the equivalent has been established.
Since the above-referenced site involves the disturbance of one or more acres of ground (for the entire
project) a permit certification issued under the General Permit for Stormwater Discharges Associated with
Construction Activity is required. A copy of the application form is enclosed with this correspondence.
(The form is also available on the web at
htty://www.cdDhe. state.co.us/wa/PemiitsUnit/FO_RMSandApplications/Appsandfonnsnewpaae.html
The application should have been completed and submitted prior to breaking ground. Since activities
have already begun, the application should be submitted to Colorado Department of Public Health and