Aqueduct Right-of-Way Station 330 Culvert Replacement (Streambed Alteration Agreement No. 1600-2020-0125-R2)


SCH Number
Public Agency
California Department of Fish and Wildlife, North Central Region 2 (CDFW)
Document Title
Aqueduct Right-of-Way Station 330 Culvert Replacement (Streambed Alteration Agreement No. 1600-2020-0125-R2)
Document Type
NOE - Notice of Exemption

Document Description
The project is limited to the replacement of two culverts at EBMUD’s Aqueduct Station 330. The culverts are intended to drain stormwater away from the aqueduct right-of-way. Culvert #1 is located on the north side of Aqueduct #1 and culvert #2 is located on the south side. The current culvert configuration allows for stormwater to flow from culvert #1, meander around the bent, and eventually through culvert #2. The circuitous flow path is inefficient, causing erosion around the bent and downstream from culvert #2. A short section of the subterranean Aqueduct #2 is now exposed due to soil erosion. Culverts #1 and #2 will be replaced and extended. Work includes excavating to remove existing culvert #1, backfill with Class 2 road base, compact the area. Excavate a new trench beginning at culvert #1’s original inlet and aligning it with culvert #2. Install two new approximately 12-inch by 24-feet high-density polyethylene (HDPE) pipes and backfill with Class 2 road base. Excavate and remove culvert #2, install either two 12-inch HDPE pipes or one 24-inch HDPE pipe approximately 35 feet long, backfill and armor pipes. Replace eroded soil on Aqueduct #2 and cover with Class 2 road base. Grade the area between culvert #1 outlet and culvert #2 inlet to direct stormwater flow between the two culverts and top with riprap.

Contact Information
Kelsey Vella
California Department of Fish and Wildlife
Lead/Public Agency
1701 Nimbus Road
Rancho Cordova, CA 95670

Phone : (916) 358-1163

East Bay Municipal Utility District
Project Applicant


38°12'40.3"N 120°54'38"W
Northern California
Other Location Info
unnamed tributary approximately 0.5 miles from Camanche Reservoir

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Type – Class 1 and 4; California Code of Regulations, title 14, section 15301 (Existing Facilities) and section 15304 (M
Reasons for Exemption
This project involves minor alteration to land by removing and replacing two existing culverts.


Notice of Exemption
2020-0125_NOE   PDF 208 K

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