Streams, Wetlands, and Habitats

Pennsylvania is an area of ongoing interest to our energy and infrastructure clients. Production, gathering, transport and processing are all activities that may impact large, often contiguous, tracts of land. A typical project can be permitted several ways, but nearly all projects require some amount of replacement offsets for unavoidable impacts to streams, creeks, wetlands and habitats.

Stream crossing and wetland impact in Pennsylvania


The permitting process is often complex to navigate. When combined with limited regulatory review resources, project approval times can suffer. Fortunately, solutions are now available that will enable project developers to avoid this lengthy process.

RES has put together some Frequently Asked Questions to cover the basics of these solutions. Since your particular situation will be unique, please contact RES’ Casey Bartkus, who would be happy to talk to you about individual watercrossings and appropriate compensatory mitigation in all forms.

How do I know if my project will require mitigation?

Typically, a desktop study using Geographic Information Systems analysis can be used for planning purposes to estimate project impact acreages. Data layers reviewed include wetlands inventories, streams and rivers, and habitats of threatened species.  A field-based, ground-truth impact delineation is always required and is an important step in the regulatory permitting process. Please contact RES to learn about project impact studies.

How do I determine offset requirements?

Offset requirements fall into two categories: acreage replacement ratios and functional model approach. An acreage replacement ratio is a method whereby the acreage of impact is replaced on an equal or greater basis. A functional model approach attempts to identify and quantify the exact aquatic function lost through the development and replace it with something functionally equivalent. Acreage replacement ratios are common practice and in use today. In Pennsylvania, a new functional model is being tested by the Pennsylvania Department of Environmental Protection (PADEP) for use with both wetland and stream replacements. RES has collaborated with the authors of the new methodology and can provide insight about how this regulatory change might affect your projects.

Susquehanna Watershed Stream Wetland Mitigation

How much time do I need to obtain required offsets for my permit?

The rule of thumb when preparing for a permit application is to start the process with a mitigation solution provider between 180 and 365 days in advance of your current expected time of need. As approved third-party mitigation resources become available, you can expect these times to shrink considerably.

We at RES hope that this information helps you with your next project.

If we can answer additional questions or help you in anyway, please contact Casey Bartkus at 412-249-2455.


  • About RES and FPR

    Stream Crossings In Pennsylvania MarcellusRES is a leading provider of ecological offsets across the United States. In Pennsylvania, RES founded First Pennsylvania Resource, LLC, (FPR), a company dedicated to delivering mitigation banks and custom ecological offset solutions across the Commonwealth. FPR is the first and only approved supplier of compensatory mitigation bank credits in Pennsylvania. If your next development project requires stream, wetland, or habitat crossings, FPR has several options to provide the required mitigation offsets within your critical project timeframe. Contact Casey Bartkus to learn more.

  • RES Knows Marcellus Wetlands

    The RES team discussed Wetlands and the Marcellus Shale with Greenwire during the Winter of 2014. Read the story here. (.pdf)

  • Check out RES’ PA office!

    PA Office380 Southpointe Blvd.,
    Plaza II, Suite 405
    Canonsburg, PA 15317
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  • News

    • Resource Environmental Solutions Acquires Environmental Banc & Exchange res_logo_thumb

      Resource Environmental Solutions (RES) announced today that it has acquired Environmental Banc & Exchange (EBX), a US-based company specialized in providing customized mitigation and ecological offset solutions to clients with impacts to natural resources throughout the Southeast, Mid-Atlantic, and Appalachian states.