El Centro Generating Station (ECGS) Wastewater Mitigation Project

2 Documents in Project

Summary

SCH Number
2023100122
Lead Agency
Imperial Irrigation District
Document Title
El Centro Generating Station (ECGS) Wastewater Mitigation Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
A2U - General Agriculture Zone, Urban Areas
Document Description
The project consists of improvements to the IID El Centro Generating Station (ECGS) wastewater facilities to achieve new and more stringent limitations for the concentration of specific pollutants that are discharged in its waste stream to receive a renewed NPDES permit from the RWQCB. The project includes equipment to minimize the cooling tower blowdown by increasing the cycles of concentration (COC), a water softening reactor, a repurposed evaporation pond, an ultrafiltration (UF) and a reverse osmosis (RO) system. Three new evaporation ponds are proposed on the site of the existing Bonanza Building. These ponds will cover 9 acres and will have an interior slope of 6:1 and an exterior berm slope of 4:1. An 18-inch overflow pipe will connect the ponds.

Contact Information

Name
Donald Vargas
Agency Name
Imperial Irrigation District
Job Title
Environmental Compliance Administrator
Contact Types
Lead/Public Agency / Project Applicant

Location

Cities
El Centro
Counties
Imperial
Regions
Citywide, Countywide
Other Location Info
The project is located at the Imperial Irrigation District’s (IID) Bonanza Building site at the northwest and southwest corners of Dogwood Road and Villa Avenue in unincorporated Imperial County. The site is to the northeast of El Centro, CA.

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Parks and Recreation, California Department of Resources Recycling and Recovery, California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Water Resources (DWR), California Department of Transportation, District 11 (DOT), California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)
State Reviewing Agency Comments
California Department of Water Resources (DWR), California Department of Transportation, District 11 (DOT), California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)
Development Types
Industrial (Construction of three 3-acre lined water treatment ponds)(Sq. Ft. 392040, Acres 9, Employees 1)
Local Actions
IID Board approval of compliance with the updated waste discharge requirements of the NPDES permit issued to the facility by the RWQCB.
Project Issues
Biological Resources, Cultural Resources
Local Review Period Start
Local Review Period End

Attachments

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