Planning and Engineering

Developing properties in Oregon requires climate-specific stormwater management solutions including Low Impact Development (LID) techniques to reduce flooding, recharge groundwater, and remove contaminants. We design stormwater infrastructure that protects our watersheds, becomes an asset to the site, and meets local design requirements, including the City of Portland Stormwater Management Manual.

NPDES Permits

MFA works closely with our clients to meet the Oregon Department of Environmental Quality (DEQ) NPDES permit requirements, including:

• 1200-Z Industrial Stormwater Discharge Permit (read our summary of this permit)
• 1200-C Construction Stormwater Discharge Permit, including CESCL inspections
• 1200-A Stormwater and Mine Dewatering Discharge Permit
• Phase I and Phase II Municipal Stormwater Permit (MS4)
• Individual Permits

Whether you need a Stormwater Pollution Control Plan (SWPCP), recommendations for effective stormwater Best Management Practices (BMPs) and site controls, or are facing a Tier I or Tier II Corrective Action response, we are here to help.

MFA also provides technical support and expert witness services for Clean Water Act lawsuits.

BMPs and Treatment

Effectively controlling pollution requires implementing a mix of operational, source control, and treatment Best Management Practices (BMPs) and control measures selected to fit your site constraints and contaminants.

MFA’s Professional Engineers have the expertise to recommend field-tested BMPs in response to Oregon stormwater permit Tier I and Tier II Corrective Actions.