PERMFILE48500

• Permit No: M2001001
• IBM Index Class Name: Permit File
• Doc Date: 3/21/2001
• Doc Name: STATEMENT OF ISSUES
• Media Type: D
• Archive: No

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' (E) All other wetlands which are state waters shall be subject only to the
narrative standards set forth in section 31.11, unless the Commission
has adopted the wetlands classification and appropriate numeric
standards.
(F) The issuance and use of site-specific or individual permits under section
' 404 of the Clean Water Act, is not precluded by the provisions of
sections 31.7, 31.11 or 31.13, except as provided in the 401 certification
process under section 25-8-302, C.R.S.
'
(G) Wetlands water quality standards and classifications shall not be
interpreted or applied in a manner that is inconsistent with sections 25-
' 8-102(5) and 25-8-104, C.R.S.
(c) Site-Specific Narrative Standards
' (i) Narrative standards may be assigned by the Commission to apply on a
specific state surface water where numeric criteria are not required under
federal law. Narrative standards will be assigned based on the evidence
presented at the classification and numeric-standards-setting hearings, and
' must protect the classified uses.
' (ii) The Commission may adopt asite-specific narrative standard where water
quality currently is degraded as a result of historical mining activities and
improvement is likely within 20 years, if it determines that such a standard is
the most appropriate option to protect existing uses and to promote water
' quality improvement efforts for the segment(s) in question due to uncertainty
regarding what water quality is attainable. Unless the Commission
determines that a different approach is appropriate on asite-specific basis, it
shall use a statement that the standard(s) for the pollutant(s) in question shall
be the chemical concentrations, biological conditions, and/or physical
conditions identified by a structured scientific use attainability analysis, or
table value standards, if the use attainability analysis is not completed and
submitted by a specified date and approved by the Commission. Generally, a
numerical temporary modification based on existing ambient quality will also
' be adopted for the segment(s) and pollutant(s) in question.
(2) Considerations in Assioninp Standards
' In promulgating water quality standards, the Commission shall consider:
(a) The need for standards which regulate specified pollutants;
'
(b) Such information as may be available to the Commission as to the degree to which
any particular type of pollutant is subject to treatment; the availability, practicality,
and technical and economic feasibility of treatment techniques; the impact of
treatment requirements upon water quantity; and the extent to which the discharge
to be controlled is significant;
' (c) The continuous, intermittent, or seasonal nature of the pollutant to be controlled;
'
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