Service Area

Industrial, Construction, and Municipal Stormwater Service

Protecting Precious Water Resources

Providing Expertise In Stormwater Support And Compliance

Pond next to grass and fence at industrial facility with stormwater best management practice controls.

Terraphase assists industries, public and private utilities, school districts, and government agencies with stormwater compliance. We provide nationwide support for a wide range of National Pollution Discharge Elimination System (NPDES) permit programs, including industrial, construction, Municipal Separate Storm Sewer System (MS4) Phase I and II, and special use general permits. Our team of stormwater experts offer an array of services, including:

  • Permit preparation and compliance strategy
  • Stormwater sampling, reporting, and pollutant source control
  • Regulatory negotiations and expert legal support
  • Corrective action planning and implementation
  • Design of permanent erosion control systems, Low Impact Development (LID), and Green Infrastructure (GI) solutions

We help clients meet permit benchmarks, support third-party litigation, and offer design and engineering expertise tailored to each project. Our team excels at building and managing stormwater programs that align with regulatory requirements and organizational goals.

Our experts participate in various statewide committees that focus on stormwater management, permits, and policy-making.

Representative Projects

See How We’ve Made A Difference Across Diverse Industries

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Christopher Alger, PG, CHG, CEG

Senior Principal Engineering Geologist

Christopher’s Profile