WSP Water Solutions

Quality and Compliance 

As-Needed Stormwater Environmental Monitoring for the City of San Diego Stormwater Department City of San Diego | San Diego, California ■ Long-term regulatory compliance ■ Water quality planning and monitoring ■ $1 million annual cost savings Since 2011, WSP has partnered with the City of San Diego to deliver comprehensive water quality planning, monitoring and regulatory support under the MS4 Permit, total maximum daily loads (TMDLs), areas of special biological significance and related policies. Our team has executed over 150 task orders, including long-term compliance monitoring and special studies that advance science-based regulations and reduce costs. We provide technical analysis, policy interpretation and stakeholder engagement to ensure 100% permit compliance while streamlining project delivery. A recent success involved a special study to reevaluate dry-weather stormwater diversion flows that protect Mission Bay and La Jolla beaches. WSP discovered that the City was paying nearly four times the necessary sewer diversion fee, despite major reductions in runoff achieved through conservation, illicit connection/illicit discharge effectiveness and public outreach. Our updated usage estimate is projected to save the City over $1 million annually, a critical outcome amid fiscal constraints.

Lake Apopka Design Build Dredging, Spoil Management and Water Treatment St. Johns River Water Management District | St. Johns, Florida ■ Sediment removal and spoil management ■ Lake sediment dredging ■ Sediment sampling and dredging WSP assessed sediment removal and spoil management strategies to improve stormwater quality and regulatory compliance at Lake Apopka. The project included dredging lake sediments to establish sediment sumps and semi-permanent removal systems that reduce resuspendable particles and improve water clarity. Targeted dredging enhanced hydraulic connectivity between Lake Apopka and the Apopka-Beauclair Canal, while near shore dredging supported aquatic vegetation restoration. Sediment testing addressed organochlorine pesticide contamination and informed dredging plans. Innovative water treatment methods were evaluated for scalability and effectiveness in near-shore zones. WSP performed bathymetric and topographic surveys to support preliminary dredge design and permitting. Navigating complex regulations, WSP secured approvals for immediate construction. In partnership with Jahna Industries, Inc., over 500,000 cubic yards of sediment were excavated and repurposed at a downstream site, ensuring nutrient containment.

Fairfax County Stormwater and MS4 Program Support Fairfax County Department of Public Works and Environmental Services | Fairfax County, Virginia ■ Stormwater Program planning, development and regulatory compliance ■ Public outreach and engagement ■ Stormwater monitoring ■ Data analysis and visualization advancing stormwater quality and compliance through its Municipal Separate Storm Sewer System (MS4) program. Selected for four consecutive MS4 and monitoring support contracts, WSP has delivered services including MS4 permit compliance tracking, TMDLs and watershed planning, and stormwater monitoring. Our team developed MS4 program plans, annual reports, and geographic information system (GIS)-based dashboards to visualize compliance data and automate service area mapping. WSP facilitated the County’s Stormwater Program Business Plan and continues to update its Public Education and Participation Plan and TMDL action plans for the Chesapeake Bay and local pollutants. We maintain GIS geodatabases to track nutrient management on County-owned turf and support Operation Stream Shield, which engages shelter clients in stream valley park cleanups. Our stormwater monitoring includes biological sample processing and wet weather sampling. Engineering support includes stream restoration and stabilization projects such as Loft Ridge outfall and Big Rocky Run. For over 22 years, WSP has supported Fairfax County in

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