Antioch Water Treatment Plant Disinfection Improvements (P.W. 246-29)

3 Documents in Project


SCH Number
Lead Agency
Antioch, City of (City of Antioch)
Document Title
Antioch Water Treatment Plant Disinfection Improvements (P.W. 246-29)
Document Type
MND - Mitigated Negative Declaration

Document Description
Note: Revised Replace the existing gaseous chlorine and anhydrous ammonia storage and feed systems with a liquid sodium hypochlorite and aqua ammonia storage and feed systems. The objectives of the project include; 1) mitigate the risks to community, operating staff and environment associated with accidental spills or leaks of gaseous chlorine and ammonia during the transportation and application of these chemicals in the drinking water treatment process; 2) Improve the reliability of the disinfection systems; and 3) Reduce the costs to permit and maintain the chlorine gas and anhydrous ammonia systems. The Project work activities would occur within the Antioch WTP site with the majority of facilities located within existing buildings and existing outdoor chemical containment structures. The anticipated duration of construction is 13 to 15 months.

Contact Information
Scott Buenting
City of Antioch
200 H Street
Antioch, CA 94531-5007



37°59'22"N 121°48'37"W
Contra Costa
Cross Streets
401 Putnam Street; south of CA Hwy 4 between D St. and G St.
Total Acres
Parcel #
State Highways
Park Middle School
Sacramento - San Joaquin Delta, Contra Loma Reservoir

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Drinking Water Type)
Project Issues
Other Issues Cumulative Effects Landuse Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Agricultural Land Other Issues: Utilities
Reviewing Agencies
Regional Water Quality Control Bd., Region 5 (Sacramento) California Department of Parks and Recreation Caltrans, District 4 Delta Protection Commission Department of Fish and Wildlife, Region 3 Native American Heritage Commission Office of Emergency Services, California Resources Agency State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Drinking Water, District 9 State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Divison of Financial Assistance
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