Stormwater Treatment Feasibility Study

Pasadena Water and Power Department (PWP) is soliciting proposals from qualified consulting firms to conduct a professional engineering stormwater treatment feasibility study for the Broadway and Glenarm Power Plants located in Pasadena, California. The feasibility study will evaluate both on-site and off-site solutions to address compliance with current effluent discharge requirements established by the Los Angeles Regional Water Quality Control Board (RWQCB).

The Broadway Steam Plant (85 E. State Street) is a decommissioned steam electric generating facility whose boilers were permanently shut down in December 2016. The plant currently houses ancillary equipment and industrial activities supporting the Glenarm Power Plant, which is located at 43 E. State Street and physically separated by the Metro Gold Line. The two plants are connected via a utility tunnel carrying water and chemicals through subsurface piping. The Glenarm Power Plant operates five natural-gas fueled combustion turbines: two 1975-era Curtiss-Wright simple cycle units (GT-1, GT-2), and three modern GE LM6000 turbines (GT-3, GT-4, GT-5), with GT-5 being a combined cycle unit. Both facilities operate under Industrial General Permit (IGP) coverage and are subject to LA River Numeric Effluent Limitation (NEL), Annual Numeric Action Level (NAL), and Instantaneous Maximum NAL requirements effective July 1, 2020.

The PWP facility comprises approximately 10.6 acres at 90-95% impervious coverage with three drainage areas corresponding to the decommissioned Broadway Plant, Glenarm Plant, and Pump/Electric Construction Shop. Currently, eight stormwater sampling points are monitored (two at Broadway, six at Glenarm) for parameters including copper, lead, zinc, iron, ammonia, oil and grease, pH, and total suspended solids. The consultant must provide a comprehensive feasibility study addressing both short-term and long-term stormwater treatment solutions.

Key dates include a Q&A deadline of May 6, 2024 at 21:00 (9:00 PM) and a proposal submission deadline of May 28, 2024 at 21:00 (9:00 PM). Responses must follow the Request for Proposals (Competitive Selection PMC 4.08.047) template and include all required forms, certifications, and documentation as specified in the solicitation.