PERMFILE122659

• Permit No: M2003091
• IBM Index Class Name: Permit File
• Doc Date: 8/25/2003
• Doc Name: General Permit Certification
• From: CDPS
• To: LaFarge West Inc
• Media Type: D
• Archive: No

Fatiliry Na. CO
CDMG Permit No. M-99-0OS
Page I
CERTIFICATION
AliTHORIZATIONTO DISCHARGE UNDER THE
CDPSINDUSTRIAL GENERAL PERMIT
FOR SAND AND GRAVEL MINING AND PROCESSING GENERAL PERMIT
Category 07, Sub-category IA -General Permits, Sand and Gravel -Process Water & Stormwater
SIC Code 1442, Sand and gravel mining, washing, crushing screening and stockpiling.
Current fee 5321/year (effective July 1, 2003)
This permit specifically authorizes:
with the facility contact of
Lafarge West, Inc.
Todd Ohlheiser, Vice President
1590 W IZth Avenue
Denver, CO 80204
303.657.4118 Fax: [phone]
Phillip Courtney - 303.657.4118
to discharge from facilities identified as the Duckworth Pit Project, located in Section 16, TZN, R68W, Weld County, to shown in
Figure I of the permit, from outfalls 001-001, as shown in Figure 2 of the permit and further identified and described in the following
table.
';Outjall~'~'°'

DDI ~ ''~ -~"° Desc'r-fio'riandTreattneaC:fr~`";> ~=_ ~ '+~
'~ '~
Discharge from settling basin pnor to entering Idaho Creek iv. .
EsYiir7rtted Flo ,,:Rate
Avg. = 1 MGD
002 Discharge from setting basin prior to entering Lighthouse Cove pond. Avg. = I MGD
The discharges are to Idaho Creek and Lighthouse Cove Pond, Segment 11 ofthe Boulder Creek Sub-basin, South Platte River Basin,
found in fhe Classifications and Numeric Standards {or the South Platte River Basin (5 CCR 1002-38), as amended January 30, 2001.
Segment 11 has been designated Use Protected and classified for the following uses: Recrearion, Class 1 a; Aquaric Life, Class 1
(Warm); Agriculture; Water Supply.
.4ntidegradation review does not apply to this permit because the receiving water is designated as Use Protected.
Snlinity (TDS) monitoring of the discharge wiU nor be required.
Phosphorus monitoring of the discharge will not be required.
Effluent limitations in Part IB.Z.a. of the permit and monitoring requirements in LB.3. of the permit apply to this facility's process
rater discharges.
At the time of application, the permittee certifjed that they had developed and implemented a Stormwater Management Plan (SWMP) fo.
this facility. As a condirion of this permit, a copy of the SWMP muse be provided to the Division upon request.
The petmittee is encouraged to read the general rationale for an understanding of how thispermit was developed and read thepermit tc
see what requiremenu exist. In the permit, effluent limitarians and monitoring/reporting requirements are specifted in Parts I B. and
I C; special notification requirements for effluent violations are addressed in Pan II A.
All correspondence relative to this facility should reference the specific facility number, COG-500466.
Effective Aueust 25,1003 Expires SEPTEMBER 30, 1007
John K Nielan
August Z5, ZO,;