Wellhead Treatment Project

3 Documents in Project


SCH Number
Lead Agency
Ontario, City of (City of Ontario)
Document Title
Wellhead Treatment Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Public Facility

Document Description
City of Ontario Wellhead Treatment Project which proposes to install infrastructure to treat groundwater that has been impacted by perchlorate and deliver the treated water to the City of Ontario's municipal water supply. The project will be funded by State Proposition 50. Specifically, the project proposes to pump water from existing City Well No. 41, convey the water through a new pipeline, where it will be treated in a new treatment plant, and discharge the treated water into the City's existing water distribution system. Well No. 41 is located on Hellman Avenue, approximately 300 feet south of the intersection of 5th Street, in the northeastern portion of the City. Water extracted from Well No. 41 will travel approximately 1,300 feet in new conveyance pipeline, to be constructed within North Hellman Avenue, to the new treatment plant, which will be constructed on East 4th Street near the intersection of 4th Street and Hellman Avenue. The new pipeline will be constructed of 16-inch cement-mortar lined and coated steel. The new treatment plant will be constructed within a City-owned vacant parcel that is approximately 50 feet wide and 100 feet deep. Once treated, the water will be pumped into approximately 200 feet of new conveyance pipeline to be constructed in 4th Street, between the treatment plant and the City's existing 36-inch water distribution pipeline.

Contact Information
Richad Ayala
City of Ontario
303 East B Street
Ontario, CA 91764

Phone : (909) 395-2421


34°4'18"N 117°35'39"W
San Bernardino
Cross Streets
4th Street and Hellman Avenue
State Highways
Ontario Int'l

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Wellhead Type)
Local Action
Other Action Other Action: Wellhead Treatment Project
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Coastal Zone Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Noise Public Services Recreation/Parks Soil Erosion/Compaction/Grading Toxic/Hazardous Traffic/Circulation Vegetation Water Supply Wetland/Riparian Wildlife Land Use
Reviewing Agencies
California Department of Conservation California Department of Parks and Recreation California Department of Transportation, District 8 California Highway Patrol California Native American Heritage Commission California Regional Water Quality Control Board, Santa Ana Region 8 California State Lands Commission Department of Fish and Wildlife, Region 6 Department of Toxic Substances Control Department of Water Resources Office of Historic Preservation Resources Agency State Water Resources Control Board, Division of Water Rights State Water Resources Control Board, Divison of Financial Assistance California Department of Public Health

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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