Harbor Generating Station Stormwater Diversion
Summary
SCH Number
2024110335
Public Agency
Los Angeles Department of Water and Power
Document Title
Harbor Generating Station Stormwater Diversion
Document Type
NOE - Notice of Exemption
Received
Posted
11/12/2024
Document Description
The Los Angeles Department of Water and Power (LADWP) proposes to divert and collect stormwater currently flowing offsite at the Harbor Generating Station (HGS) to prevent potential pollutants from escaping the facility. Existing water conveyance will be modified to redirect stormwater flows from around the entire facility towards four lift stations (LS). Water will be pumped into a stormwater holding tank (SWHT) via four LSs, three of which will be installed within the portion of the facility west of Fries Ave (main HGS facility), and one that will be installed within the portion of the facility east of Fries Ave. The new SWHT will replace an existing abandoned diesel storage tank in the existing tank’s footprint. The SWHT will be able to hold approximately 1 million gallons of stormwater. A combination of gravity flow storm drainpipe and pressurized pipe will direct stormwater to the SWHT. Approximately 715ft of new stormwater drainpipe will be installed via trenching to direct water towards individual LSs. About 1400ft of new pressurized pipe will be installed via trenching to convey stormwater from the LSs to the SWHT. Stormwater held in the SWHT will be discharged into the sanitary sewer under permit with Los Angeles Sanitation.
Contact Information
Name
Marshall Cyr
Agency Name
Los Angeles Department of Water and Power
Job Title
Environmental Specialist
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Location
Coordinates
Cities
Los Angeles
Counties
Los Angeles
Regions
Citywide
Cross Streets
W Harry Bridges Blvd and N Fries Ave
Zip
90744
State Highways
I-110, I710, CA-47, CA-103, CA-1
Railways
Pacific Harbor Line, UP, BNSF
Waterways
Pacific Ocean, Dominguez Channel
Township
T05S
Range
R13W
Section
5
Other Location Info
161 Island Ave, Wilmington, CA 90744
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301, Class 1; Section 15302, Class 2; Section 15303, Class 3
Reasons for Exemption
In accordance with the California Environmental Quality Act, this project is Categorically Exempt from CEQA review pursuant to section 15301 (Existing Facilities), 15302 (Replacement or Reconstruction), and 15303 (New Construction). Section 15301, Class 1, consists of the operation repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of the existing or former use. Section 15302, Class 2, consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced, including the replacement or reconstruction of existing utility systems/facilities involving negligible or no expansion of capacity. Section 15303, Class 3, consists of construction and location of limited numbers of new, small facilities or structures; installation of small new equipment and facilities in small structures; and the conversion of existing small structures from one use to another where only minor modifications are made in the exterior of the structure. The proposal for the HGS Stormwater Diversion Project meets the requirements of these exemptions; therefore, no further CEQA review is required.
County Clerk
Los Angeles
Attachments
Notice of Exemption
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