Granite Bay State Park
WWTP Engineering Consultation & Groundwater Monitoring
From 2019 to 2022, CTR Water provided expert engineering consultation and compliance support for the Granite Bay State Park Wastewater Treatment Plant (WWTP), operated by the California Department of Parks and Recreation. The facility utilizes two leach field treatment systems surrounded by seven groundwater monitoring wells, receiving diverse effluent from day-use restrooms, state park offices, lifeguard facilities, and fast-food concessionaires. Serving as the project’s technical expert, CTR Water managed highly variable seasonal flows—ranging from 4,000 gallons per month in the winter to over 116,000 gallons during peak summer usage—ensuring continuous system performance and regulatory compliance.
Facility Specifications
- Client: California Department of Parks and Recreation
- Facility Type: WWTP with dual leach field treatment systems
- Location: Placer County, CA
- Flow Variance: 4,000 gal/mo (Winter) to 116,000+ gal/mo (Summer)
- Regulatory Authority: Central Valley RWQCB (WDR Order No. 94-151)
CTR Water Scope of Work
- Engineering Consultation: Reviewed comprehensive system data and provided expert recommendations to meet critical treatment objectives.
- System Analysis: Conducted advanced leach field application analysis and system performance rate calculations.
- Groundwater Monitoring: Assisted park staff with environmental sampling analysis across the seven surrounding monitoring wells.
- Regulatory Compliance: Managed routine report preparation and mandatory submissions for the Central Valley RWQCB.
