Construction Projects

Description

This is a long-term program to replace and/or rehabilitate the existing pipelines and canals that cross Interstate 80. Currently, the Agency owns and operates 26 raw water and 24 treated water pipeline crossings, many of which were installed as part of the original Interstate construction project in the 1950s. The program will begin with the rehabilitation of three (3) of the Agency’s most at risk raw water crossings, with additional crossings planned to follow.

Location

On I-80 between Channel Hill Road and Lincoln Way
On I-80 at the Clipper Gap overpass
On I-80 between Lake Arthur road and Applegate road, east of Lake Theodore

Schedule

Construction – Winter/Spring 2026

About Project

The Lake Alta Dam project is a multi-year project to address regulation changes since the two Lake Alta dams were installed. Originally constructed for mining activities in the 1850's, the dams have been in continuous service ever since. This facility is an important component of PCWA's water delivery system, and this project will ensure lake levels, vegetation, and drainage comply with current regulatory requirements. See below for document links for this project.

Project Location

The Lake Alta Dam Project is located in the Town of Alta, near Bonny Nook Drive.

Construction Timeline

Consultants are currently gathering information on-site to be used to design improvements to the dams. Completion of design of improvements to the dams is anticipated in 2024. Any future construction work will proceed upon completion of design and regulatory approvals.

Latest Update

PCWA removed dead and dying trees in 2017 the vicinity of the dams to comply with direction from the California Division of Safety of Dams (DSOD). In winter of 2018/2019 PCWA collected bore samples from each of the dams. Additional samples collected from test pits and analyzed in 2021. Results from both sampling events will be used to support design of the necessary dam improvements..

Description

This project is in partnership with South Placer Municipal Utility District. With PCWA acting as the lead agency, this project will replace approximately 1,654 linear feet of aging water mains and 1,700 linear feet of aging sewer mains in the Newcastle Community along Old State Highway and Buena Vista. Additionally, this project will include five (5) new fire hydrants, the replacement of 22 water services and 17 sewer services, and 33,871 square feet of pavement overlay.

Location

Newcastle, CA along Old State Highway and Buena Vista Avenue

Schedule

Open Bids – August 2025
Begin Construction – October 2025
Complete Construction – Fall 2026

Project Description

This project is replacing the existing 1.2 million gallons per day (MGD) Colfax water treatment plant (WTP) with a 2 MGD WTP (expandable to 3 MGD). The existing WTP is at the end of its operational life and requires full replacement. The new WTP will be constructed at the intersection of Rollins Lake Rd and Hwy 174 and will include additional capacity to accommodate future expansion of the water system and voluntary consolidations of smaller water purveyors in the region.

“Funding for this project has been provided in full or in part through an agreement with the State Water Resources Control Board. California’s Drinking Water State Revolving Fund is capitalized through a variety of funding sources, including grants from the United States Environmental Protection Agency and state bond proceeds. The contents of this document do not necessarily reflect the views and policies of the foregoing, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.”

Project Location

25745 Rollins Lake Rd, Colfax, CA, 95713

Project Schedule

• Begin Construction May 2025
• End Construction Winter 2027