As the Governor-designated Water Quality Management Agency for the Cherry Creek Reservoir watershed, CCBWQA reviews site applications for domestic wastewater treatment works, including Wastewater treatment facilities (WWTFs), lift stations, and interceptor sewers. CCBWQA reviews address protection of Cherry Creek Reservoir and the watershed with respect to phosphorus and nitrogen, general water quality, protection of downstream water quality to protect water supplies, and adequacy of proposed design processes and capacity to protect water quality. As required by Regulation 72, CCBWQA must report annually on approved site applications.

In 2024, four site location applications were submitted to the CCBWQA for review. After review by Rick Goncalves, CCBWQA Water/Wastewater Manager, CCBWQA determined all four projects met the CCBWQA specific criteria for lift stations as outlined in the Authority’s Guidance Document, including differential flowmeters, redundant pumps, overflow storage, a clear maintenance plan and well-defined Emergency Response Plan, all of which will be protective of the water quality in the watershed and the reservoir.

Castle Pines North Lift Station No. 1 Site Location Application: Castle Pines North Metropolitan District (CPN) submitted a CDPHE Regulation 22 Lift Station Site Location Application Form Section 22.9 which requires approval or disapproval and signature of CCBWQA as the 208 Management Agency. The project proposed replacing existing CPN Lift Station 1 with new 872 gpm increased capacity pumps. The increase is necessary because Lift Station 2 will be decommissioned , its flows being added to Lift Station 1. Additionally, the project proposed replacing a portion of existing, aged 10-inch force main, adding overflow storage, adding an emergency power generator and adding differential flow meters. .

Cherry Creek Middle School No. 8 Site Location Application: The Prairie Point Community Authority Board submitted a CDPHE Regulation 22 Lift Station Site Location Application Form Section 22.9 which requires approval or disapproval and signature of CCBWQA as the 208 Management Agency. The project proposed replacing existing Cherry Creek Middle School No. 8 with a new lift station with 152 gpm increased capacity pumps to service the larger service area, reconstructing a portion of existing 8-inch force main to a 4-inch force main to increase scour velocities and reduce incidences of force main blockages, providing 10,866 gallons of emergency overflow storage, including a new underground concrete overflow vault-18% more than default minimum, adding an emergency power generator, and adding differential flow meters.

Stonegate Village Metropolitan District WWTF Site Location Application Amendment: The Stonegate Village Metropolitan District submitted a CDPHE Regulation 22 Site Location Application Form Section 22.10 – Amendment of Existing Treatment Plant Site Location Approval which requires approval of disapproval and signature of CCBWQA as the 208 Management Agency. The amendment proposed replacing existing, aged and worn-out membrane filters in the Membrane Biological Reactors (MBR) with new, more efficient membrane filters. No increase in hydraulic or organic capacity proposed.

Castle Pines North Lift Station No. 6 Site Location Application: The Castle Pines North Metropolitan District (CPN) submitted a CDPHE Regulation 22 Site Location Application Form Section 22.9 which requires approval or disapproval and signature of CCBWQA as the 208 Management Agency. The project proposed replacing existing CPN Lift Station No. 6 pumps with new 310 gpm capacity pumps and adding overflow storage.