Hawthorne Utility Undergrounding

The Town of Tiburon Public Works Department organized the Hawthorne Undergrounding Utility Project. The project includes relocating the PG&E Power, AT&T Telephone, and Comcast Communications aerial facilities to underground along Delmar Drive, Hawthorne Drive, Maravista Court, Palmer Court, Rock Hill Rd, Hilary Court, Hilary Drive and portions of Tiburon Blvd within the Town of Tiburon.

This area is primarily single-family residential and includes the Belvedere Tennis Club, and local schools and churches. The purpose of the project is to improve system safety and reliability, as well as neighborhood aesthetics. The project is located in the Town of Tiburon.

The project itself consists of approximately 13,000 LF of open cut excavation and the installation of 1” – 6” conduit. Coordinating installation of services with eighty private homeowners presents a unique challenge for our crew and requires a contractor who is available and sensitive to the needs of individual clients.

22 Fillmore Transit Priority Project

The 22 Fillmore Transit Priority Project includes rerouting the 22 Fillmore transit line from Potrero Hill such that it continues along 16th Street and terminates at Mission Bay.

To facilitate this reroute, new Overhead Contact System (OCS) infrastructure and traction power ductbank will be installed. In addition, transit bulbs and transit boarding islands will be constructed to enable more efficient passenger boarding and alighting. Pedestrian bulbs, raised crosswalks, and curb ramps will be constructed to enhance pedestrian safety. Traffic signals and traffic signal communication infrastructure will also be added or upgraded. Other project scope includes streetscape, streetlight, and roadway rehabilitation improvements.

In order to provide minimal overall disruption to the public, the 22 Fillmore Transit Priority Project will incorporate other planned projects on 16th Street. The San Francisco Public Utilities Commission (SFPUC) has incorporated its water and sewer main replacement scope in this Project.

Mission Bay Block 23A Site Utility Loop and Connections

Project includes the construction of the site utility loop extensions from the existing utility loop termination connections outside of UCSF’s Rock Hall Building to the new connections outside the new Block 23A Neurosciences Research Building to support the new building utility demand. Scope of work is for the installation of civil utilities to within 5’ of the Block 23A building. Work will include but not limited it to, the demolition of existing landscaping and site work, excavation and trenching. Scope of work also includes but not limited to the installation of Manhole Vaults, Chilled Water, Steam, Sanitary Sewer, Storm Drain, Fire Water, Domestic Water, Electrical Ductbanks, Telecom Ductbanks and Generator relocation. Final phase of work will be backfilling trench, finish grade and install new site work, asphalt paving and landscaping.

Upgrade Downtown Project

Upgrades and modernization of traffic signals, streetscape and underground utilities along University Ave in Palo Alto. Work included the installation of water and gas mains, electrical and fiber optic infrastructure, flatwork and curb ramps, way-finding signage, roadway construction and traffic signal systems.

Homestead High School Utility Infrastructure

Fremont Union High School needed to replace their entire central infrastructure. This required some intricate timing hurdles to work while students were not on campus.
The project included tying together classroom heating and cooling systems in various classroom buildings and conveyance to the central boiler room. It included some rerouting of buried and above ground fire systems, domestic water, hydronics, and also included dry utilities for switching, electrical and other systems.

SCADA System – Phase II

This Project was to incorporate new SCADA monitoring site (flow and pressure) into existing San Francisco Water Supply SCADA system. The monitoring sites contribute to the automation process of the water supply system. The work included the traffic routing, removal of pavement, the excavation of trenches and pits, the loading and hauling of materials to the job site, furnishing and installing concrete vaults for flow meter, transducers and pressure transmitters, control cabinets and appurtenances, the furnishing and placing of backfill and the restoration of pavements. Also included was the installation of two pressure transmitters at 7 existing pressure regulating valves(PRC) within San Francisco. The pressure signals were connected to the existing SFWD SCADA Master System. One Flow meter and one pressure transmitter was to be installed at twenty three (23) locations within san Francisco and will be tied to the existing SFWD SCADA Master System. Flow meter and pressure transmitters were to be installed at 5 Bay Area Water Supply Conservation Agency (BAWSCA) Turnouts in the Peninsula and South Bay areas and will be tied to the existing SFWD SCADA Master System.

Downtown Utility Undergrounding

This project included the conversion of above ground power and telecommunications to underground facilities with the installation of new joint trench. It included removal of pavement, landscaping and other surfaces both in private property and city streets to accomplish the trenching, excavation and backfill, repaving, installation of substructures, conduits, pull boxes, telephone boxes, communications boxes, vaults and appurtenances, and AC patching. This also required providing and installing electric service equipment within private property, and the removal and installation of new streetlights, coordination with telecommunication and CATV systems as well.

Gas Main Replacement – No. 16

Provided installation of gas main, services and service stubs for the City of Palo Alto. Included reconnecting existing gas services, modification of the existing natural gas plumbing to accommodate relocation of gas meters, excavation, water main installation, surface restoration and all incidental and related work.
Gas main footages: 6,743 LF of 6″, 5,011 LF of 4″, 13,336 LF of 2″, and connection to over 500 individual services.

SJSU Campus Village – Phase 2

South East Quadrant of SJSU: Sawcut and remove paving, concrete, base, soil, etc. necessary to demolish and remove existing wet and dry utilities. Locate, excavate, and shore for demolition of existing utility lines, to make room for new rerouting of all utilities surrounding the new campus building. New systems including: chilled and steam water systems with pre-insulated pipelines, new manholes/vaults, sump pump system in manholes, Reclaimed water lines, Domestic Water, Irrigation Water, Storm Drain Lines, Water Well Attachments and Auxiliaries, electrical and telecommunication duct banks and structures.

Mission Bay Utilities & Distribution – Phase 1

This project provided Steam, Condensate, hot water supply and return, chilled water supply and return, a 12-inch water main serving the fire protection systems of 5 buildings and numerous fire hydrants, various telecommunications ducts and large communications vaults with Joint Trench, and primary utility piping for the Helen Diller Building on 3rd St. The construction schedule was extremely critical in conjunction with many other trades and disciplines, so others’ new buildings could be timely completed. Our schedule was changed to accommodate the owner’s requirements. Project complexity required us to track using CPM scheduling for the multiple project phases. This project had constrained site conditions as it is located within the Misson Bay UCSF Campus; close to busy traffic area, existing occupied buildings, pedestrian traffic attending the active campus, and other contractors working adjacent to our work area. Intensive safety requirements and a complex shoring system to work around the numerous utilities, were maintained for a safe working environment for workers and the general public. Work around and re-route numerous unknown utility lines; 8-inch gas main, temporary above ground ductile iron water main feeding potable water for four building residential complexes (800 residents), temporary above ground fire-protection lines for the Rock Hall Building and temporary power feed to provide parking lot lighting.