Protecting Our Water Quality

Stormwater management is a young, and fast evolving, field where regulation pushes the limits of feasibility and practicality. Aspect’s stormwater engineers, hydrologists, and water quality specialists are experts in the regulatory and technical requirements driving stormwater compliance. From assisting municipalities in developing a stormwater utility to monitoring water quality during qualifying storm events, we are focused on providing the advice and data necessary to deliver efficient solutions to industrial, municipal, and construction stormwater issues.

INDUSTRIAL STORMWATER

STORMWATER AND SURFACE WATER MONITORING

STORMWATER PLANNING & DESIGN

• NPDES Permitting and Compliance

• Stormwater Program Development and Implementation

• Drainage Basin Studies and CIP Development

• Collection, Conveyance, Treatment, and Flow Control Design

• Low Impact Development / Green Stormwater Infrastructure

• Hydrologic and Hydraulic Modeling

• Underground Injection Control Wells

• Infiltration

• Stormwater Discharge and Receiving Water Characterization

• NPDES Permit Compliance Monitoring

• TMDL Compliance

• Illicit Discharge Detection & Elimination and Pollutant Source Tracing

• Water Quality Monitoring

• Telemetry and Automated Sampling

• BMP Effectiveness Studies and TAPE

• Stream Gaging and Flow Monitoring

• Industrial, Individual, Boatyard, and Sand and Gravel Permits

• State Waste Discharge Permits

• SWPPPs and SPCCs

• Stormwater Treatment

• Mixing Zone Studies

• Expert Witness Support for Clean Water Act Citizen Suits

FLOODPLAIN MANAGEMENT

• Flood Hazard Management and Mitigation

• Flood Protection Planning, Modeling, and Design

• Flood Frequency Analyses and Flow Duration Analyses

• Flood Monitoring and Early Warning Systems

• FEMA Map Revisions

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Maxum Petroleum Industrial Stormwater General Permit Support

Aspect assisted Maxum Petroleum in achieving ISGP compliance at its diesel fueling and petroleum fuel/lubricant shipping and receiving facility located on Harbor Island in Puget Sound, Washington. A systematic and cost-effective approach was used to evaluate stormwater infrastructure upgrades, and treatability testing was performed to select the optimum stormwater treatment system. The new system features pressurized filtration and adsorptive media filtration. Initial water quality monitoring results indicate all ISGP water quality benchmarks were easily achieved.