1992-09-25_GENERAL DOCUMENTS - C1981017

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 9/25/1992
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division
Amendment No. 2 Rationale - Page 2. Permit Number CO-0000396 `
II. FACILITY INFORMATION: (Continued)
F. Discharge Points See pages 2-4 of the renewal rationale (dated
and Flows: (Cont.) December 1, 1988) and the rationale for
Amendment No. 1 (dated November 21, 1989) for a
more detailed discussion of all the discharge
points and their flows.
III. RECEIVING STREAM:
A. Identification, Classification, and Standards
1. Identification: The discharges go to the following surface
waters: Bear Creek (001); Coal Creek (003, 017, 020, 021, 027,
028); South Fork of Dutch Creek (002, 013, 018, 019); North Fork
of Dutch Creek (004, 015, 022, 023); Dutch Creek (006, 008, 009,
010, 016, 025, 026); and Oil Well Creek (005, 014). All of
these creeks are tributaries to the Crystal River, Roaring Fork
River sub-basin, Upper Colorado River Basin. All the creeks
associated with the discharge points are in segment 9, which
includes the mainstem and tributaries of Coal Creek. The next
downstream segment is segment 8, which includes the mainstem and
tributaries of the Crystal River.
2. Classification: Segment 9 is classified for the following
uses: Recreation, Class 2; Aquatic Life, Class 1 (Cold, Goal);
Water Supply; Agriculture. Segment 8 is classified for the
following uses: Recreation, Class 1; Aquatic Life, Class 1
(Cold); Water Supply; Agriculture.
3. Numeric Standards: The standards which have been assigned in
accordance with the above classifications can be found in 3.3.0
Classifications and Numeric Standards for the Upper Colorado
River Basin (5 CCR 1002-8) . For a further discussion of the
water quality standards, see Appendix A of the renewal rationale
(dated December 1, 1988) for this facility.
B. Receiving Water Data
1. Stream Low Flows: Same as in the renewal rationale (dated
December 1, 1988), which are as follows:
For Coal Creek and its tributaries:
Acute UE3) low flow = 0.0 cfs
Chronic (30 E3) low flow = 0.0 cfs
IV. PURPOSE OF AMENDMENT:
The purpose of this amendment (Amendment No. 2) is a) to provide an
update for an amended design for the wastewater treatment plant, which
revises the design for the WWTP that was indicated in Amendment No. 1