Mare Island Strait Outfall Project

6 Documents in Project

Summary

SCH Number
2013012074
Lead Agency
Vallejo Sanitation and Flood Control District
Document Title
Mare Island Strait Outfall Project
Document Type
NOD - Notice of Determination
Received

Document Description
The District proposes to develop and operate a new outfall into Mare Island Strait. The District proposes to reduce energy expenditures and greenhouse gas emissions associated with its existing wastewater treatment plant operations by switching their operations to discharge up to 30 million gallons per day (MGD) of treated effluent into Mare Island Strait on a year-round basis and up to an additional 30 MGD of excess wet-weather flows to the Carquinez Strait. Currently, the Carquinez Strait outfall is used year-round and the existing Mare Island Strait outfall is used for wet-weather flows. The District has estimated that pumping costs would be reduced because it take less electrical power to pump effluent to the Mare Island Strait compared to the Carquinez Strait. District average daily dry weather flows are less than 10 MGD. Energy savings would apply to all dry weather flows and wet weather flows up to 30 MGD. Operations would remain unchanged for wet weather flows exceeding 30 MGD. The project would not increase the discharge quantity or alter the existing treatment process; it is simply a relocation of the point of discharge. The existing outfall to Mare Island Strait would not be removed. Additional project features include installing a pump station and rehabilitating and realigning elements of the existing chlorination and dechlorination system within the wastewater treatment plant site.

Contact Information
Rudolf Ohlemutz
Vallejo Sanitation and Flood Control District
450 Ryder Street
Vallejo, CA 94590

(707) 644-8949

Location

Coordinates
38°5'32.14"N 122°15'5.09"W
Cities
Vallejo
Counties
Solano
Cross Streets
Ryder Street, Sonoma Blvd, Solano Ave
Zip
94509
Total Acres
.47
Parcel #
0058100520
State Highways
Hwy 29, 80, 780
Railways
SPRR
Airports
No
Schools
21
Waterways
Mare Island Strait, Napa River
Township
3N
Range
4W
Section
24
Base
MDB&M

Notice of Determination

Approving Agency
Vallejo Sanitation and Flood Control District
Approving Agency Role
Lead Agency
Approved On
Final EIR Available Location
Vallejo Sanitatiion and Flood Control District, 450 Ryder Street, Vallejo, CA 94590

Determinations

(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A Statement of Overriding Considerations was adopted for this project
No
(5) Findings were made pursuant to the provisions of CEQA
Yes
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