Stormwater Management
Stormwater includes run-off from precipitation, snow and ice melt. Management of stormwater—including collection, conveyance and treatment—is essential to reduce the risk of flooding and maintain surface water quality and supply. Stormwater management challenges include inadequate and aging infrastructure, contamination of groundwater and surface water due to pollutants and nutrient loading and climate-related, increased precipitation-event intensity and frequency.
GZA has demonstrated success with a broad range of stormwater management projects, ranging from assessment and condition surveys, watershed evaluations, topographic surveys, hydrologic and hydraulic analyses, infrastructure hydraulic modeling, and stormwater management design.
Our staff has deep experience with the analysis and design of stormwater Best Management Practices (BMPs) necessary to achieve regulatory compliance at local, state and federal levels. Our multidisciplinary staff of engineers, landscape architects, ecologists and permitting specialists are also skilled in identifying opportunities for nature-based stormwater management solutions, working in concert with the natural environment and to facilitate resilience.
Capabilities
- Stormwater Infrastructure Inventory Survey, Conditions Assessment & Mapping
- Stormwater Infrastructure Design and Hydraulic Modeling
- Pre & Post Land Development Stormwater Analysis
- Stormwater Master Planning
- Stormwater Detention, Infiltration & Treatment System Design
- Culvert Analysis
- Soil Evaluation and Permeability Testing
- Groundwater Mounding Analysis
- Erosion and Sediment Control Design and Monitoring
- Nature Based Design Solutions
- Construction Management
- Stormwater Pollution Prevention Plans (SPPP)
- Best Management Practices (BMPs)
- Green Stormwater Infrastructure (GSI) and Low Impact Development (LID)
- Illicit Discharge Detection and Elimination (IDDE)
- NPDES Permit Compliance including MS4, MSGP, RGP and CGP
- Operation & Maintenance Planning & Inspections
