Oak, 98th and Sequoia Rate Control Stations Rehab;


The work on this project involves retrofitting Oak and Sequoia Rate Control Stations (RCS) in Hayward and Oakland, respectively, demolishing 98th Avenue RCS’s in Oakland, replacing University Pumping Plant (PP) in Berkeley, demolishing University Reservoir and constructing University Reservoir No. 2 in Oakland, and performing other related work to improve long-term system reliability and seismic resilience.

The existing pumps at University PP are about seventy years old and have reached the end of their expected service lives. Work under this project includes demolishing the existing University PP, constructing a new reinforced concrete PP at the site, installing a mechanical pump skid with two vertical turbine pumps and motors with associated piping, valves, and instruments, and constructing other site improvements.

The existing University Reservoir in Oakland will also be demolished and replaced. University No.1 Reservoir was constructed in 2016 as one of two replacement tanks. This project will construct the second tank, including the valve pits and associated piping. This project supports the District’s Long-Term Infrastructure Investment Strategic Plan goal.

Airport-Larkfield-Wikiup Sanitation Zone Larkfield Estates Collection System

This project included the construction of 8,600 feet of 8-inch diameter sanitary sewer main, approximately 800 feet of 6-inch sewer main, and approximately 900 feet of 2-inch low-pressure sewer main. The work also includes installation of basins to serve four individual parcels and the abandonment or removal of approximately 400 feet of existing sewer main.    

Cyclic Sewer Phase 14

OWNER: City of Alameda                                             

ENGINEER: City of Alameda


CONTRACT VALUE: $3,680,494


The project involved replacing 8,400LF of existing sanitary sewer with 8″ SDR 26 pipe, 300LF with 10″ SDR 26, and 300LF with 6″ SDR 26 pipe by open trench method. We also replaced 400LF of existing sanitary sewer with 10″ HDPE pipe, 2,500LF with 8″ HDPE pipe, and 500LF with 6″ HDPE pipe by pipe bursting method. Replaced 10,500LF of 4″ sewer laterals. Installed 350 4″ 2-way Kelly cleanouts, installed 33 manholes, and reconstructed sidewalk and roadway.

Freedom T1 Phase 1 – Site Utility Chilled Water Loop

Project consisted of two laboratory/office buildings (160,000 sq. ft. each), and one amenities building (40,000 sq. ft.) totaling 360,000 square feet. The scope of work included Domestic, Fire and Chilled Water. The project also was targeted to receive LEED Gold Certification.

Utility Relocations – Workday Inc

Project involved installation of site utilities for a new commercial campus development. Work occurred concurrent with building construction and involved significant co-ordination with other trades. Utilities installed were water, sanitary sewer and storm drain systems.

2013 Street & Sewer Rehabilitation

This project included the removal and replacement of sanitary sewer pipe, open cut trenching, pipe bursting, sewer lateral reconnection, pothole utilities, sewer manholes, storm drain pipe removal and replacement. In order to facilitate this work, subsequent reconstruction of portions of curb and gutter, sidewalks, curb ramps, and driveways, AC pavement repairs, AC cold planning, grading and compaction of the road subgrade, paving fabric installation, asphalt concrete placement, AC berm, traffic striping, traffic signs, clearing and grubbing, excavation, construction of drilled, reinforced concrete piers, reinforced concrete grade-beam and storm drainage improvements were necessary.

Bird Avenue Sanitary Sewer & Storm Drain

Work on this project consisted of the installation of approximately 1,350 linear feet of 18-inch diameter ductile iron pipe (DIP) and 815·linear feet of 15-inch high-density polyethylene (HDPE) pipe. The project also included the removal and construction of new manholes, new storm laterals and inlets, reconnection and repair of active sanitary sewer service laterals, partial removal and reconstruction of existing PCC sidewalk, curb, gutter, driveways, AC roadway pavement, and the construction of ADA-compliant wheelchair ramps. In order to facilitate the construction, subsequent work included traffic control, clearing, grubbing, and removal of obstructions, cleaning and video inspection of existing service laterals, preparing subgrades, installing aggregate base, grade adjustments, tree trimming, streetlight work, streetlight relocation, traffic striping, protection of existing utilities and appurtenances.

Belle Haven Sewer Project – Phase II

Work consisted of the rehabilitation and replacement of 6″ to 15″ sanitary sewer mains in a residential area of Menlo Park by Open Trench Construction, Pipe Bursting, and Cured-in-Place Pipe.
Also included was construction of new 4″ laterals, reconnection of laterals, installation and rehabilitation of 100 manholes, surveying, street and landscape resortation, and dust and traffic control.
Open Trench- 920 LF PVC; Pipe Bursting- 15,134 LF HDPE; CIPP- 1,975 LF

Stevens Creek Blvd Sanitary Sewer Improvement

This project consisted of the removal of approximately 5,050 linear feet of existing 8 and 10-inch vitrified clay pipe (VCP) and replacement with 15 and 18-inch VCP, plus the removal and replacement of approximately 80 linear feet of existing 24-inch reinforced concrete pipe (RCP) with 24-inch VCP. This project also included the reconstruction of 12 existing manholes, removal of 5 existing manholes, installation of 9 new manholes, abandonment of existing sanitary sewer main, and reconnection of active sanitary sewer service laterals.

Large Diameter Gravity Sewer Rehabilitation – No. II-1

This project consisted of Cured In Place Pipe (CIPP) rehabilitation of approximately 709 lf of 36-inch, 203 lf of 33-inch, 1,057 lf of 24-inch, 697 lf of 21-inch, and 1,203 lf of 18-inch sanitary sewer mains, reinstatement of 35 service laterals, rehabilitate 5 sanitary sewer manholes, replace frames and covers on 25 sanitary sewer manholes. This also included spot repair on 18-inch diameter CP sanitary sewer main by open cut method prior to rehabilitation with CIPP, plus site and pavement restoration.