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Water: Nonpoint Source Success Stories

Pennsylvania: Johnson Run

Local Conservation Group Leads Efforts to Neutralize Acid Mine Drainage and Restore Fishery

 

Waterbodies Improved

  Acid mine drainage (AMD) from abandoned coal mines impaired the aquatic life designated use in the Johnson Run watershed. As a result, the Pennsylvania Department of Environmental Protection (DEP) placed the main branch of Johnson Run and more than 17 miles of contributing tributaries on the state's 2004 Clean Water Act (CWA) section 303(d) list of impaired waters because of low pH and elevated manganese levels. Treating AMD and surface runoff from mining waste piles significantly improved water quality in much of the watershed and restored the aquatic life designated use. Consequently, DEP intends to remove eleven segments within the Johnson Run watershed (the main branch and 14.9 miles of tributaries) from the 2012 CWA section 303(d) list of impaired waters.

 

Contact:

Joe Kelly
Pennsylvania Department
  of Environmental Protection
717-783-2404

                Eli Heferle
Pennsylvania Department
 of Environmental Protection
814-797-1191


 
This map of Pennsylvania shows the state’s six major river basins (Erie, Genesee, Ohio, Susquehanna, Delaware and Potomac). Johnson Run is in the Ohio River basin. Larger view of map (PDF)
(1 p, 127K, About PDF)

Figure 1. Johnson Run is in the Ohio River watershed.

 
This photo shows a small bridge over a rocky stream in a wooded area.

Figure 2. Restoration efforts have improved water quality in Johnson Run (looking downstream, above the confluence with East Branch Clarion River).

         
This photo shows two people sitting on a rock next to a rocky stream.

Figure 3. Pennsylvania DEP staff members conduct biological sampling to measure fish populations in summer 2010.

 

Problem

Johnson  Run is a headwater stream in the Ohio River watershed (Figure 1). It originates  in northern Elk County in northwestern Pennsylvania and flows into the East  Branch of the Clarion River downstream of East Branch Dam. This area has been  subject to strip mining and deep mining for coal since the late 1800s, although  there are currently no active mines in the watershed. Discharges from old deep  mines are the most significant source of AMD to Johnson Run, followed by runoff  from unreclaimed surface mining activities. Discharges from these sources have  caused pH and metal levels in the waterbody to exceed water quality standards.  As a result, the Pennsylvania DEP placed numerous segments within the Johnson  Run watershed on the state's 2004 CWA section 303(d) list of impaired waters  because of low pH and high levels of manganese. To meet the state's standards,  the pH must stay above 6.0 standard units and manganese concentrations (total  30-day mean) may not exceed 1.00 milligrams per liter (mg/L).

Project Highlights

In the late 1990s, a local watershed group formed to improve  water quality in East Branch Lake and its surrounding waters, including Johnson  Run. The group, known as the Elk County Fishermen, implemented a number of  projects to clean up AMD, concentrating their efforts on East Branch Lake  tributaries and Johnson Run. In 2002 an environmental consulting firm (Hedin  Environmental) developed a restoration plan for East Branch Lake and Johnson  Run. The plan outlined the steps necessary to restore the impaired waterbodies  and bring back healthy fish populations.

  In 2002 project partners installed a passive treatment  system on a Johnson Run tributary to treat flow from an abandoned deep mine  that generates the watershed's primary source of AMD. The treatment system,  which consists of vertical flow ponds, limestone-lined channels, flush ponds,  holding tanks and wetlands, collects and treats two separate discharges from  the abandoned deep mine.

In 2003 another method of treatment was  implemented to treat surface sources of AMD. Runoff from pyritic spoil piles  (mine waste with high levels of pyrite, a rock composed of iron and sulfur) and  surface mines contributed to water quality degradation in Johnson Run. To  address these surface sources, project partners mixed alkaline residuals  (limestone and paper fines) from the Weyerhauser paper mill's wastewater  treatment plant with the pyritic spoil piles to neutralize the pH. The partners  then applied a thick layer of residuals and seeds to the surface of the piles.  The layer supported the growth of dense vegetation, which has helped to prevent  pollution by reducing oxygen and water infiltration, both precursors to acid  formation.  

Results

Adding the upstream passive treatment system on the  abandoned deep mine and treating the surface runoff from pyritic spoil piles  significantly improved water quality in the watershed (Figure 2). Data  collected at the mouth of Johnson Run show a rise in pH, from an average of 5.2  standard units in 1998 to 7.3 standard units in 2007. In addition, the data  show that average 30-day manganese concentration declined to 0.08 mg/L. Both  parameters now meet water quality standards.

  The treatment systems remain in place and continue to  improve water quality. The data from biological monitoring conducted in 2010  (Figure 3) show that a healthy fish population has been restored and  Johnson Run now supports its aquatic life designated use. Based on these water  quality improvements, DEP intends to remove 11 segments of Johnson Run  (including the main branch and more than  14.9 miles of tributaries) from the state's CWA section 303(d) list of impaired waters in 2012.

Partners and Funding

The Elk County Fishermen and the North Central Pennsylvania  Regional Planning and Development Commission used $407,000 in Growing Greener  and Watershed Restoration and Partnership Act funds to build the passive  treatment system.

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