Identify and monitor the primary components of tds in the Upper Monongahela River Basin


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Identify and monitor the primary components of TDS in the Upper Monongahela River Basin

  • Identify and monitor the primary components of TDS in the Upper Monongahela River Basin

  • Identify the primary sources of TDS

  • Understand the relationship between stream flow and [TDS]

  • Evaluate and develop efficient and effective methods for controlling TDS concentration







The river was dead due to untreated AMD prior to 1970

  • The river was dead due to untreated AMD prior to 1970

  • AMD treatment brought back fisheries

  • As UG mining moved down dip toward the center of the Pittsburgh Coal Basin, salinity increased

  • No basin-wide flow/chemistry monitoring until mid 2009

  • TDS loads needed to understand assimilative capacity











WF 01 West Fork River DS Worthington, WV

  • WF 01 West Fork River DS Worthington, WV

  • TY 02 Tygart Valley River, Coalfax, WV

  • Mon 03 Monongahela River at MUB

  • DE 04 Deckers Creek in Morgantown

  • Mon 05 Monongahela River at Point Marion, PA

  • CR 06 Cheat River at tailrace of dam

  • DU 07 Dunkard Creek Shannopin Gage

  • Mon 08 Monongahela River at Masontown PA

  • WH 09 Whiteley Creek

  • TM 10 Tenmile Creek near Route 88

  • Mon 11 Monongahela River, Elizabeth PA

  • YR 12 Youghiogheny River near Sutersville, PA



































Formed in January 2010

  • Formed in January 2010

  • Consists of the major coal producers in the upper Monongahela basin

  • Supported by ongoing TDS monitoring and assessment carried out by the WV Water Research Institute





Where:

  • Where:

  • L= cumulative TDS load (tpy) from all AMD treatment plants in the watershed

  • La =TDS load (TPY) allowable to meet target in-stream TDS concentration (TDSt)

  • Pi = pumping rate (gpm) at a given AMD plant

  • Qs = Stream flow (cfs)

  • TDSt=target TDS concentration (mg/L)

  • TDSi = TDS concentration (mg/L) from a given AMD plant

  • TDSs = in-stream TDS concentration (mg/L)

  • FOS = Factor of Safety

  • n = number of AMD treatment plants in the watershed

  • i = individual AMD treatment plant



For example, for a watershed with three AMD treatment plants: (i= 1,2,3),

  • For example, for a watershed with three AMD treatment plants: (i= 1,2,3),

  • P=2,500 gpm, TDS = 5,000, then L1 = 27,500 tpy

  • P=5,500 gpm, TDS = 10,000, then L2 = 121,000 tpy

  • P=7,500 gpm, TDS = 6,000, then L3 = 99,000 tpy

  • Total = L = 247,500 tpy



Develop relationship between flow and TDS

  • Develop relationship between flow and TDS

  • Management tools:

    • Identify Assimilative Capacity
    • Coordinate release of treated AMD With higher river flows
      • What are the critical flows in the Mon and the tributaries?
      • Manage by month? Season? Instantaneous flow?
  • Will require:

    • Monitoring program: chemistry and flows
    • Organization/Coordination: Industry TDS Working Group
    • Understanding of mine water storage capacities
    • More responsive pumping systems
  • Alternatively we’ll probably see end of pipe discharge limits for TDS



None of the TDS constituents are cumulative or toxic at reasonable concentrations

  • None of the TDS constituents are cumulative or toxic at reasonable concentrations

  • Upper Mon AMD plants generate between 200,000 and 500,000 tpy of TDS

  • That accounts for between 20 to 100% of TDS in the Mon

  • For much of the year the Mon can easily assimilate that sort of loading while maintaining a [TDS] below 500 mg/L

  • It should be possible to develop a managed, load-weighted discharge program to control [TDS] at the desired levels

  • That will require organization, commitment , transparency and accountability



Managing TDS in the Monongahela River

  • Managing TDS in the Monongahela River

  • Paul Ziemkiewicz, PhD

  • Director

  • West Virginia Water Research Institute

  • West Virginia University




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