Aqueduct Right-of-Way Station 330 Culvert Replacement (Streambed Alteration Agreement No. 1600-2020-0125-R2)
Summary
SCH Number
2020080005
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
Received
Posted
8/3/2020
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
Name
Kelsey Vella
Agency Name
California Department of Fish and Wildlife
Contact Types
Lead/Public Agency
Phone
Name
Agency Name
East Bay Municipal Utility District
Contact Types
Project Applicant
Location
Coordinates
Counties
Calaveras
Regions
Northern California
Township
4N
Range
10E
Section
07
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.
Attachments
Notice of Exemption
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