PROJECT ADDRESS
201 W. Mountain Street, Pasadena, California 91103(Assessor’s Parcel Number 5728-021-916, 5728-021-911, 5728-021-913)
PROJECT DESCRIPTION
The applicant, the City of Pasadena Water and Power (PWP) as lead Agency, is proposing to replace the existing reservoirs. The existing reservoirs has been in service for over 125 years, have past their useful life, and subject to leakage. Additionally, seismic evaluations have identified necessary seismic improvements for the reservoirs’ roofing system. Therefore, due to the age and condition of the existing reservoirs PWP plans to replace these reservoirs with two new prestressed concrete reservoirs in the same location. Reservoir 1 would have a capacity of 4.9 million gallons (MG) and Reservoir 2 would have a capacity of 6.1 MG.
In addition, the Project would install a new on-site groundwater treatment plant (GWTP) to be able to treat for perchlorate and volatile organic carbons (VOCs) and utilize the City’s local groundwater supply. This would provide PWP with greater water supply reliability and operational flexibility. The GWTP would be installed in phases. Initial phase would allow for a treatment capacity of 1,500 gallons per minute (gpm) and would treat for perchlorate and volatile organic compounds such as 1,2,3 Trichloropropane (TCP). Future phase would increase the total treatment capacity to 4,500 gpm and may include up to 800 gpm of side stream biological nitrate treatment.
ENVIRONMENTAL REVIEW
The Draft EIR analyzed the following environmental topics: Aesthetics, Air Quality, Cultural Resources, Energy, Greenhouse Gas Emissions, Hazards and Hazardous Materials, Noise, and Tribal Cultural Resources. The Draft EIR identified potentially significant effects related to the following topics: cultural resources, hazards and hazardous materials, and tribal cultural resources. As described in the Draft EIR all but one of these impacts can be mitigated to a less than significant level, with one impact remaining significant and unavoidable (a substantial adverse change in the significance of a historical resource).
SUBMITTING COMMENTS
The Draft EIR may be viewed on the City of Pasadena website at: https://pwp.cityofpasadena.net/sunsetcomplex/. Hardcopies are available during regular business hours at the following locations:
- PWP office, 150 South Robles Avenue, Suite 200, Pasadena, California 91101
- La Pintoresca Branch Library, 1355 North Raymond Avenue;
- City of Pasadena Office of the City Clerk, 100 North Garfield Avenue, Room S228; and
- City of Pasadena Permit Center, 175 North Garfield Avenue.
The City will consider all written comments regarding the potential environmental effects of the Project received during the public review period. Comments on the Draft EIR may be received in writing between Thursday, July 31, 2025 and Monday, September 15, 2025. Written comments, including emails, must be submitted in writing between by 5:30 P.M., September 15, 2025 .
Please direct your written comments via email and/or postal service to:
Michael Lin, P.E.
City of Pasadena Department of Water and Power
150 South Los Robles Avenue
Pasadena, California 91101
Email: mlin@cityofpasadena.net
DOCUMENTS AVAILABLE FOR REVIEW
MEETINGS AND HEARINGS
A public hearing to consider certification of the EIR and approval of the requested Conditional Use Permit (CUP) will be held by the City’s Hearing Officer. The date and time for such a hearing has not yet been determined, but will occur after the completion of the Draft EIR public review period and after preparation of the Final EIR.
CONTACT INFORMATION
CASE MANAGER: Michael Lin, P.E., Department of Water and PowerEMAIL: mlin@cityofpasadena.net