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Page Contents:
TMDL Documents
Metals:
The "Boulder-Elkhorn Metals TMDLs and Framework Water Quality Improvement Plan" was approved by EPA on December 20, 2012. The final document can be found on our website at: http://deq.mt.gov/wqinfo/TMDL/finalReports.mcpx.
Nutrients, Sediment, & Temperature:
The nutrient, sediment, and temperature TMDLs are being published in a separate document from the metals TMDLs. Draft portions of this document are being posted in the table below for stakeholder review and comment, as they become available. A deadline for submitting comments has not been established. Stakeholders will be notified via email when all portions of the document are available for review and the stakeholder comment period end date has been determined. A stakeholder meeting will be held once the full draft document is complete.
If you would like to send comments, please email them to Christina Staten or mail to:
Dept. of Environmental Quality
PPA/WQPB
Attn: Christina Staten
P.O. Box 200901
Helena, MT 59620-0901
Boulder-Elkhorn Nutrients, Sediment, and Temperature TMDLs Draft Document
Note: Some appendix and attachment letters may change
Document Section
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Section Contents
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Date Posted
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Sections 1-4 (0.7 MB)
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1.0: Introduction
2.0: Boulder River Watershed Description
3.0: Montana Water Quality Standards
4.0: Defining TMDLs & Their Components
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11/26/12
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Section 5: Sediment TMDL Components
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Detailed evaluation of sediment water quality standards and calculation of pollutant source loading estimates, TMDLs, and allocations for sediment TMDLs.
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Section 6: Temperature TMDL Components (0.2 MB)
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Detailed evaluation of temperature water quality standards and calculation of pollutant source loading estimates, TMDLs, and allocations for temperature TMDLs.
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11/16/12
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Section 7: Nutrient TMDL Components (0.9 MB)
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Detailed evaluation of nutrient water quality standards and calculation of pollutant source loading estimates, TMDLs, and allocations for nutrient TMDLs.
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10/5/12
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Sections 8-10
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8.0: Other Identified Issues or Concerns
9.0: Restoration Objectives & Implementation Plan
10.0: Monitoring for Effectiveness
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Appendix
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Appendix Description
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Date Posted
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Appendix A: Tables & Figures
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Contains Table A-1 and all maps and figures for the Boulder River Watershed Description found in Section 2.0 of the document and Appendix B.
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Appendix B: Boulder River Watershed Description
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Describes the physical, ecological, and cultural characteristics of the Boulder River watershed. The characterization establishes a context for impaired waters in the watershed, in support of TMDL development.
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Appendix C: Regulatory Framework & Reference Condition Approach
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Contains more detailed information about legal requirements for developing TMDLs; Montana’s sediment, nutrient, and temperature water quality standards; and the approach taken to evaluate reference conditions.
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Appendix D: Sediment Reference Conditions & Target Value Rationale (0.1 MB)
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Provides a detailed description of the approach taken to determine reference conditions in the Boulder-Elkhorn TMDL planning area, and the target parameters and target values used for sediment-impaired streams in this planning area.
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7/10/12
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Appendix E:
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This appendix will contain information related to the sediment TMDLs
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Appendix F: Nutrient Water Quality Data
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Contains the water quality data used in development of nutrient TMDLs in the Boulder-Elkhorn TMDL Planning Area
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Attachment
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Attachment Description
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Date Posted
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Attachment A
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This attachment will contain information related to the sediment TMDLs
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Attachment B
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This attachment will contain information related to the temperature TMDLs
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Nutrients and Metals Water Quality Sampling Data
DEQ sampled for a suite of nutrients and metals parameters during high and low flows in 2009 and 2010 throughout the Boulder River watershed. Seventy-three sites were sampled in 2009. A portion of those sites were sampled in 2010, along with 14 new sites. Five sites were sampled in 2011 in order to collect additional data on three streams. The sampling and analysis plans posted below provide tables and maps of sampling locations and the parameters that were sampled at each site. Data from all three years is provided below in both PDF and MS Excel (spreadsheet) formats.
Sediment & Temperature Source Assessment Reports
REPORT
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DESCRIPTION
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Sediment and Habitat Conditions and Streambank Erosion Assessments (2.5 MB)
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Instream fine sediment data was collected and streambank erosion assessments were performed during the summer of 2010 on 13 streams. This document summarizes the methods used and the data that was collected. A map of sampled sites is included.
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Assessment of Sediment Contribution from Hillslope Erosion (Upland Modeling Report) (1.16 MB)
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A simple model was used to provide an assessment of existing sediment loading from upland sources and an assessment of potential sediment loading through the application of best management practices.
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Boulder River Temperature Assessment (1.32 MB)
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Stream temperature, flow, and riparian shade data was collected on the Boulder River during the summer of 2010. This information was used in a QUAL2K model to assess the influence of riparian shading and streamflow on stream temperatures in the Boulder River. This report contains a map of sample locations, summarizes the collected data, and discusses the results of the assessment.
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Click on the Adobe icon if you need to download the free Adobe Acrobat software to view these files.
Please contact Christina Staten, if you have problems downloading these documents.
Page Released: August 27, 2009
Last Updated: January 14, 2013