36-inch Transmission Main Replacement

2 Documents in Project

Summary

SCH Number
2018091036
Lead Agency
Sweetwater Authority
Document Title
36-inch Transmission Main Replacement
Document Type
MND - Mitigated Negative Declaration
Received

Document Description
The project involves the installation of approx 16,500 lf of water transmission main and the abandonment of the existing main within the Sweetwater River valley. The majority of the transmission main would be installed within proximity to the existing alignment, while some portions would be realigned. The majority of the new main would remain 36 inches in diameter, with the exception of a 3,100-ft reach that would be upsized to 48 inches. Installation of the new main would occur first, followed by the abandonment of the existing main by filling with concrete slurry or similar material. Construction would be accomplished primarily through open trenching, while jack and bore method would be utilized for a storm drain crossing along a limited portion of segment 1. Construction staging areas would be used for temporary storage of material.

Contact Information
Luis Valdez
Sweetwater Authority
505 Garrett Avenue
Chula Vista, CA 91910

916 422 8395

Location

Coordinates
32°39'30"N 117°2'30"W
Cities
Chula Vista
Counties
San Diego
Cross Streets
Bonita Rd and Willow St
Zip
91902
Total Acres
20
Parcel #
various
State Highways
I-805, Hwy 54 & 125
Schools
Sunnyside ES, etc.
Waterways
Sweetwater River
Base
SB
Other Location Info
Bonita

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (main replacement Type)
Local Action
Other Action Other Action: governing board
Project Issues
Archaeologic-Historic Biological Resources Traffic/Circulation Vegetation Water Quality Cumulative Effects
Reviewing Agencies
California Department of Parks and Recreation California Highway Patrol Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Office of Historic Preservation Regional Water Quality Control Board, Region 9 Resources Agency State Lands Commission State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Drinking Water, District 14 State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights Caltrans, District 11
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