Tom Wolf, Governor Patrick McDonnell, Secretary DEP Home
On Sunday, 03/18/2018 between the hours of 1AM and 3AM, all Department of Environmental Protection external application servers will be undergoing scheduled maintenance. Please plan accordingly, and thank you for your patience.

Welcome to DEP's eLibrary

The Online eLibrary is the official repository of DEP's key documents available for viewing and downloading in Microsoft Word and Adobe PDF formats.

Environmental Laws of PA
Permit and Authorization Packages
Source Water Assessment Summary Reports
Technical Guidance Draft Documents
Technical Guidance Final Documents
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Pennsylvania Department of Environmental Protection
Rachel Carson Building | 400 Market Street | Harrisburg, PA 17101