Managing stormwater is an important consideration for industry, municipalities, and real estate developers. Seneca Engineering provides design services for cost effective stormwater erosion and sediment control facilities for new construction and existing facilities. We also provide regulatory assistance with meeting federal, state and local stormwater regulations.

Individual and General NPDES permits may require you to comply with permit terms and conditions along with numerical limits for the discharge of stormwater. The Seneca Engineering Team includes personnel with decades of experience in interpreting and identifying regulations that apply to your situation and cost-effective engineering design solutions. Our team includes a retired former 30-year Ohio EPA, Division of Surface Water employee with over 6 years of consulting experience. This regulatory experience supplements our core engineering capabilities to design for many unique stormwater management system challenges.

Specific stormwater management services provided include:

  • National Pollutant Discharge Elimination System (NPDES) permitting, permit interpretation and implementation for individual and general permits.
  • Negotiation of permit conditions, compliance schedules, and enforcement actions with state and local regulators.
  • Stormwater Pollution Prevention Plan (SWPPP) for construction sites, industrial facilities, and municipalities with industrial type facilities.
  • Stormwater discharge sampling.
  • Retention and detention basin design.
  • Municipal Separate Storm Sewer System (MS4) support including:
    • Illicit Discharge Detection and Elimination (IDDE) program design and implementation.
    • Construction site inspections.
    • Post-Construction Best Management Plan reviews and maintenance recommendations.
    • MS4 “pre-auditing” of the Six Minimum Control Measures to prepare communities for an Ohio EPA audit.
    • Storm Water Management Plans (SWMP).
    • Training provided to City personnel on all aspects of the MS4 General NPDES permit related to compliance.