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PNDI – Environmental Review

Small creek flowing through meadow

Most civil engineers are responsible for elaborate permitting submissions. Accordingly, submissions include requirements to protect and mitigate impacts. As a result, engineers complete a PNDI review. The review considers the project location versus known habitat locations. Consequently, if your project is located near a waterway or wetland, it is more likely affected. Some of the more well-known animals included in the review are bald eagles and bog turtles.


What is a PNDI?

PNDI stands for Pennsylvania Natural Diversity Inventory. It is a web-based environmental review tool. The tool reviews project footprints against endangered, threatened, and special concern species habitats. The data comes from the PNHP (Pennsylvania Natural Heritage Program) and the four partner agencies:

  • Pennsylvania Department of Conservation and Natural Resources
  • Pennsylvania Fish and Boat Commission
  • US Fish and Wildlife
  • Pennsylvania Game Commission

Each one of the agencies has jurisdiction over the different species. Therefore, they each perform different reviews based on the tool results.


What is the Process?

To start, the individual requires login information from PNHP. Once logged in, the individual will create a project and complete a questionnaire. Subsequently, complete the outline of the project boundary in the mapping software. Then, the user reviews and accepts the outline, before entering project information. Finally, submit the tool for review. 

An automated pre-analysis process occurs after submission. However, depending on the results, a series of questions request more information. After answering these questions, the tool is formally submitted. After submitting, an email provides applicants with a draft receipt.  This receipt provides clearance, mitigation measures, or a need for detailed submissions.

If the project has no impacts or acceptable mitigation measures, the individual can finish the receipt. Permitting applications require a signed copy of the document submitted with the application. Whereas, in situations where impacts may exist, the application will need to be made to the necessary agency. These submissions can require further site investigations and reports. Once the agency completes a formal review, outcome letters are supplied.


Who is ACA?

Started in 1992 and located in Chester County, PA ACA has grown to become a full-service engineering firm. Today, we merge professional services with practical knowledge for residential and commercial projects. No matter the scale, from installing a fence, to building a structure or developing land, you need permits. Because the approval process includes many permits and agencies, it can be a headache. Working with ACA’s full-service team saves you time, money, and headaches.  Every step of the way, we are here to support you and educate you about the process. Here are some of the basic services we provide:

Construction Management | Civil Engineering | Environmental Permitting | Septic System Testing and Design | Land Surveying | Wetland Delineations and Mitigation

Please feel free to browse our website or if working on a project or need help, contact us at (610) 469-3830. 

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