Code of Colorado Regulations
1000 - Department of Public Health and Environment
1002 - Water Quality Control Commission (1002 Series)
5 CCR 1002-31 - REGULATION NO. 31 - THE BASIC STANDARDS AND METHODOLOGIES FOR SURFACE WATER
- Section 5 CCR 1002-31.1 - AUTHORITY AND SCOPE
- Section 5 CCR 1002-31.2 - PURPOSE
- Section 5 CCR 1002-31.3 - INTRODUCTION
- Section 5 CCR 1002-31.4 - DELETED
- Section 5 CCR 1002-31.5 - DEFINITIONS
- Section 5 CCR 1002-31.6 - PROCESS FOR ASSIGNING CLASSIFICATIONS
- Section 5 CCR 1002-31.7 - PROCESS FOR ASSIGNING STANDARDS AND GRANTING, EXTENDING, OR REMOVING TEMPORARY MODIFICATIONS AND VARIANCES
- Section 5 CCR 1002-31.8 - ANTIDEGRADATION
- Section 5 CCR 1002-31.9 - IMPLEMENTATION OF STANDARDS
- Section 5 CCR 1002-31.10 - MIXING ZONES
- Section 5 CCR 1002-31.11 - BASIC STANDARDS APPLICABLE TO SURFACE WATERS OF THE STATE
- Section 5 CCR 1002-31.12 - SALINITY AND SUSPENDED SOLIDS
- Section 5 CCR 1002-31.13 - STATE USE CLASSIFICATIONS
- Section 5 CCR 1002-31.14 - Reserved
- Section 5 CCR 1002-31.15 - SEVERABILITY
- Section 5 CCR 1002-31.16 - TABLES
- Section 5 CCR 1002-31.17 - NUTRIENTS
- Section 5 CCR 1002-31.18 - Reserved
- Section 5 CCR 1002-31.19 - Reserved
- Section 5 CCR 1002-31.20 - STATEMENT OF BASIS AND PURPOSE (1979 ADOPTION)
- Section 5 CCR 1002-31.21 - STATEMENT OF BASIS AND PURPOSE (1984 REVISIONS)
- Section 5 CCR 1002-31.22 - STATEMENT OF BASIS AND PURPOSE (1987 REVISIONS)
- Section 5 CCR 1002-31.23 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE (1988 REVISIONS-ANTIDEGRADATION)
- Section 5 CCR 1002-31.24 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE (1988 REVISIONS-MISCELLANEOUS ISSUES)
- Section 5 CCR 1002-31.25 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE (1989 REVISIONS)
- Section 5 CCR 1002-31.26 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE (1991 REVISIONS)
- Section 5 CCR 1002-31.27 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE; MARCH, 1993 HEARING ON WETLANDS CLASSIFICATIONS AND STANDARDS
- Section 5 CCR 1002-31.28 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE; JANUARY, 1993 HEARING ON WATER QUALITY DESIGNATION PROVISIONS
- Section 5 CCR 1002-31.29 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; OCTOBER 4, 1993, HEARING
- Section 5 CCR 1002-31.30 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE (1993 REVISIONS-DIMP STANDARD)
- Section 5 CCR 1002-31.31 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE: JULY 11, 1994 HEARING
- Section 5 CCR 1002-31.32 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE: OCTOBER, 1995 HEARING
- Section 5 CCR 1002-31.33 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE: DECEMBER, 1996 HEARING
- Section 5 CCR 1002-31.34 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JULY, 1997 RULEMAKING
- Section 5 CCR 1002-31.35 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; NOVEMBER, 1997 RULEMAKING
- Section 5 CCR 1002-31.36 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JANUARY, 1999 RULEMAKING
- Section 5 CCR 1002-31.37 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JULY, 2000 RULEMAKING HEARING
- Section 5 CCR 1002-31.38 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE: OCTOBER, 2000 CONTINUATION OF JULY, 2000 RULEMAKING
- Section 5 CCR 1002-31.39 - FINDINGS IN SUPPORT OF ADOPTION OF EMERGENCY REVISIONS TO REGULATION NO. 31, THE BASIC STANDARDS AND METHODOLOGIES FOR SURFACE WATER (5 CCR 1002-31) AND REGULATION NO. 21, PROCEDURAL RULES (5 CCR 1002-21)
- Section 5 CCR 1002-31.40 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; FEBRUARY, 2001 RULEMAKING
- Section 5 CCR 1002-31.41 - FINDINGS IN SUPPORT OF ADOPTION OF EMERGENCY REVISIONS TO REGULATION NO. 31, THE BASIC STANDARDS AND METHODOLOGIES FOR SURFACE WATER [5 CCR 1002-31]
- Section 5 CCR 1002-31.42 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; SEPTEMBER, 2001 RULEMAKING
- Section 5 CCR 1002-31.43 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; SEPTEMBER 2004 RULEMAKING HEARING
- Section 5 CCR 1002-31.44 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; June 2005 Rulemaking Hearing; Final Action August 8, 2005; Revisions Effective December 31, 2005 and December 31, 2007
- Section 5 CCR 1002-31.45 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE: January 2007 Rulemaking Hearing; Final Action February 12, 2007; Revisions effective July 1, 2007
- Section 5 CCR 1002-31.46 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; DECEMBER 10, 2007 RULEMAKING; EFFECTIVE MAY 31, 2008
- Section 5 CCR 1002-31.47 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE: OCTOBER 13, 2009 RULEMAKING, EFFECTIVE DATE OF NOVEMBER 30, 2009
- Section 5 CCR 1002-31.48 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JUNE 7-8, 2010 RULEMAKING; FINAL ACTION AUGUST 9, 2010; EFFECTIVE DATE JANUARY 1, 2011
- Section 5 CCR 1002-31.49 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JUNE 13, 2011 RULEMAKING; EFFECTIVE DATE JANUARY 1, 2012
- Section 5 CCR 1002-31.50 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; MARCH 12, 2012 RULEMAKING, FINAL ACTION JUNE 11, 2012, EFFECTIVE DATE SEPTEMBER 30, 2012
- Section 5 CCR 1002-31.51 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; AUGUST 13, 2012 RULEMAKING; FINAL ACTION SEPTEMBER 11, 2012; EFFECTIVE DATE JANUARY 31, 2013
- Section 5 CCR 1002-31.52 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; APRIL 11, 2016 RULEMAKING; FINAL ACTION MAY 9, 2016; EFFECTIVE DATE JUNE 30, 2016
- Section 5 CCR 1002-31.53 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JUNE 13-15, 2016 RULEMAKING; FINAL ACTION AUGUST 8, 2016; EFFECTIVE DATE DECEMBER 31, 2016
- Section 5 CCR 1002-31.54 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JANUARY 9, 2017 RULEMAKING; EFFECTIVE MARCH 1, 2017
- Section 5 CCR 1002-31.55 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; OCTOBER 10, 2017 RULEMAKING; EFFECTIVE DECEMBER 30, 2017
- Section 5 CCR 1002-31.56 - STATEMENT OF BASIS SPECIFIC STATUTORY AUTHORITY AND PURPOSE; DECEMBER 11, 2017 RULEMAKING; FINAL ACTION DECEMBER 11, 2017; EFFECTIVE DATE JANUARY 31, 2018
- Section 5 CCR 1002-31.57 - STATEMENT OF BASIS SPECIFIC STATUTORY AUTHORITY AND PURPOSE; DECEMBER 9, 2019 RULEMAKING; FINAL ACTION JANUARY 13, 2020; EFFECTIVE DATE JUNE 30, 2020
- Section 5 CCR 1002-31.58 - STATEMENT OF BASIS SPECIFIC STATUTORY AUTHORITY AND PURPOSE; APRIL 13, 2020 RULEMAKING; FINAL ACTION MAY 11, 2020; EFFECTIVE DATE JUNE 30, 2020
- Section 5 CCR 1002-31.59 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY AND PURPOSE; JUNE 14-15, 2021 RULEMAKING; FINAL ACTION AUGUST 9, 2021; EFFECTIVE DATE DECEMBER 31, 2021
Current through Register Vol. 47, No. 17, September 10, 2024
Entire rule eff.
07/01/2007.
Rules 31.11, 31.46 eff. 05/31/2008.
Rules
31.11 (Table), 31.47 eff. 11/30/2009.
Rules 31.5, 31.7, 31.8,
31.11, 31.14, 31.16, 31.48 eff. 01/01/2011.
Rules 31.7 , 31.49
eff. 01/01/2012.
Rules 31.9, 31.13.1(d), 31.17, 31.50 eff.
09/30/2012.
Rules 31.11(3), 31.51 eff. 01/31/2013.
Rules 31.11, 31.52 eff. 06/30/2016.
Rules 31.3, 31.5, 31.7-31.9,
31.11, 31.14, 31.16 , 31.5 3 eff. 12/31/2016.
Rules 31.11(3),
31.54 eff. 03/02/2017.
Rules 31.17, 31.55 eff. 12/30/2017.
Rules 31.16 Table 1, 31.56 eff. 01/31/2018.
Rules
31.5, 31.11, 31.13, 31.16, 31.57, 31.58 eff. 06/30/2020.
Rules
31.5, 31.7(3),(4), 31.8(2)(b), 31.9, 31.11, 31.16, 31.17, 31.59 eff.
12/31/2021.
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