Regulatory authority library

What municipalities and commercial owners need to know about stormwater compliance

Straight answers on MS4 and TMDL obligations, NPDES permits, basin retrofits, invasive control, and the PA grant money that pays for the work — written by the engineer who does it.

• Guide (PDF)

  MS4 Basin Retrofit & Naturalization Guide

  A municipal and commercial playbook for turning aging detention basins into compliant, pollutant-reducing assets under your NPDES MS4 permit and Pollutant Reduction Plan.

  • ms4
  • tmdl
  • prp
• Article

  Brush Hogging vs. Forestry Mulching

  Brush hogging and forestry mulching serve different goals. What each method does, when to use it, and what drives project cost for commercial and municipal land in NE PA.

  • forestry
  • costs
• Article

  Detention vs. Retention Basins — What's the Difference

  Detention basins hold runoff temporarily and release it slowly; retention basins maintain a permanent pool. Understanding the difference shapes design, maintenance, and regulatory compliance.

  • basins
• Article

  PA Grants for Habitat, Stormwater & Pollinator Work

  An overview of PA and federal funding programs for habitat, wetland, stormwater, and pollinator projects — and what makes a site competitive for municipalities, nonprofits, and commercial landowners.

  • grants
  • dep-grants
• Article

  How to Establish a Pollinator Garden

  A step-by-step guide for campuses, municipalities, and commercial sites in NE Pennsylvania on designing, planting, and maintaining a native pollinator garden.

  • pollinator
  • habitat
• Article

  What Drives Land Clearing Cost Per Acre

  Land clearing cost per acre varies widely. This guide covers every major cost driver — density, terrain, stumps, debris, permits — without quoting a rate.

  • land-clearing
  • costs
• Article

  NPDES Permits for Stormwater in Pennsylvania

  A practical guide for PA municipalities and commercial landowners on NPDES stormwater permits — what they require, who needs one, and how the permitting process works.

  • npdes
  • ms4
• Article

  PA DEP Stormwater Grants & Funding Guide

  PA municipalities and commercial landowners have real funding options for stormwater and basin work. This guide covers the major sources and what makes a project grant-ready.

  • dep-grants
  • grants
• Article

  How to Control Spotted Lanternfly in Pennsylvania

  A seasonal guide for commercial properties and municipalities in NE Pennsylvania on spotted lanternfly identification, lifecycle, and licensed control strategies at property scale.

  • spotted-lanternfly
  • seasonal
• Article

  What Is a Riparian Buffer (and Why It Matters)

  A riparian buffer is a vegetated zone between land and water that filters runoff, stabilizes banks, and supports habitat. The three-zone model, its value, and how buffers are established.

  • habitat