Altamont Pipeline Project Draft EIR

6 Documents in Project


SCH Number
Lead Agency
Zone 7 Water Agency
Document Title
Altamont Pipeline Project Draft EIR
Document Type
EIR - Draft EIR
Document Description
The Proposed Project would entail constructing about 11-12 miles of buried potable water pipeline. Most of the pipeline would be constructed by the conventional cut-and-cover trenching method, with smaller segments constructed through microtunneling or jack-and-bore. Minimum cover over the top of the pipe would be 3-4 feet. A microtunnel boring machine would be used for portions of the alignment where it is essential to avoid surface ground disturbance or disruption of surface activities. The pipeline would be graded for gravity flow. It would be up to 48 inches in diameter, and would accommodate a normal peak capacity of 42 MGD with fluctuations up to 46 MGD. It would be equipped with the following appurtenant facilities: in-line valves to control and isolate flow in the pipeline, air valves, blowoffs, pressure-reducing valves, access manways, access roads, and backup (emergency outage) facilities to provide water supply to the future AWTP for maintenance, operations, and print startup when the ATWP or South Bay Aqueduct is out-of-service.

Contact Information

Jack Fong
Agency Name
Zone 7 Water Agency
Contact Types
Lead/Public Agency


State Highways
I-580, Hwy 84
Union Pacific
Livermore Municipal Airport
Arroyo Las Positas, Arroyo Seco, Altamont Creek

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), Central Valley Flood Protection Board, Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Divison of Financial Assistance, Caltrans, Division of Aeronautics, California Department of Transportation, District 4 (DOT), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB)
State Reviewing Agency Comments
Caltrans, Division of Aeronautics, California Department of Transportation, District 4 (DOT), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB)
Development Types
Water Facilities (Type Pipeline, MGD 42)
Local Actions
Site Plan, Encroachment
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildlife

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 or via phone at (916) 445-0613.

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