FLOOD10424

• County: Weld
• Community: Fort Lupton
• Stream Name: South Platte River
• Title: Amended Certification for the CO. Wastewater Discharge Permit System - Permit No. COG-50000 - Faility No. COG-500394
• Date: 3/20/2003
• Floodplain - Doc Type: Project

1"
, .

Permit No. COG-500000
Facility No. COG-500394
CDMG Permit No. M-99-/20
Page J

....

AMENDMENT NO 1 TO CERTIFICATION
AUTHORIZATION TO DISCHARGE UNDER THE
CDPS INDUSTRIAL GENERAL PERMIT
FOR SAND AND GRA VEL MINING AND PROCESSING GENERAL PERMIT
Category 07, Sub-category IA - General Permits, Sand and Grave/- Process Water & Storm water
Category 25 Subcategory 1 Permit Amendments
SIC Code 1442, Sand and gravel mining, washing, crushing screening and stockpiling.
Current fee $48 (25% of Annualfee)

This permit specifically authorizes:

L. G. Everist, Inc.
R. A. Everist, President
7321 E. 88th Avenue, Suite 200
Henderson, CO 80640
[phone] FAX: [phone]

with the facility contact of

Lynn Mayer, Regulatory Manager
[phone]

to dischargefromfacilities identified as the Ft. Lupton Sand and Gravel Mine, located in the S 'lj of the NW ~ of Section 30, T2N, R67W, Weld
County, as shown in Figure 1 of the permit, from outfalls 001 - 002, as shown in Figure 2 of the permit andfurther identified and described in
th~ following table.

"

Outfall
001
002

Description and Treatment
Discharge/rom the settling basin prior to entering the South Platte River.
Discharge from the settling basin prior to entering the Lupton Bottom Ditch.

Estimated Flow Rate
Avg. -I.6MGD
Avg. = 1 MGD

The discharges are to the Lupton Bottom Ditch and the South Platte River, Segment 1 of the Middle South Platte River Sub-basin, South Platte
River Basin, found in the Classifications and Numeric Standards for the South Platte River Basin (5 CCR 1002-38), effective January 30, 2002.
Segment 1 has been designated Use Protected and classified for the following uses: Recreation, Class Ia; Aquatic Life, Class 2 (Warm);
Agriculture.

Sdlinity (TDS) monitoring of the discharge will not be required.
Phosphorus monitoring of the discharge will not be required.
Antidegradation review does not apply to this permit.

At the time of application, the permittee certified that they had developed and implemented a Storm water Management Plan (SWMP) for this
fadlity. As a condition of this permit, a copy of the SWMP must be provided to the Division upon request.

The permittee is encouraged to read the general rationale for an understanding of how this permit was developed and read the permit to see
what requirements exist. In the permit, effluent limitations and monitoring/reporting requirements are specified in Parts lB. and I. C; special
notification requirements for effluent violations are addressed in Part /lA.

This certificate has been amended to include an additional outfall (outfall 002) to Lupton Bottom Ditch. When water is present in the ditch,
the discharge will flow north and be used for agriculture. When the ditch is dry, the discharge will be pumped south into the South Platte
Ri~er.

All correspondence relative to this facility should reference the specific facility number, COG-500394.

Amendment Effective March 17, 2003 Expires SEPTEMBER 30, 2007

Amended by John K. Nieland
March 17, 2003

Th is facility permit contains 25 pages.