FOLSOM DAM SPILLWAY PIERS AND GATES
FOLSOM, CA

The Folsom Dam Spillway Piers and Gates Project is part of the U.S. Bureau of Reclamation’s Infrastructure Reliability and Safety of Dams improvements. The project consisted of modifications to the Folsom Dam spillway piers and gates to resist seismic loadings. The scope included installation of pier anchors and bracing, replacement of existing gate arms and other equipment, and preparation and support activities.

MatriScope was responsible for providing contractor quality control and testing and inspection services including pull-out testing for post-installed adhesive anchors, grout sampling and cylinder preparation for through bolts and seismic pier passive anchors, and sampling and inspection for cast-in-place concrete and structural steel.

TOWNSHIP 9 MAKE-READY INFRASTRUCTURE
SACRAMENTO, CA

Township 9 is a planned mixed-use, transit-oriented development project located in Sacramento’s River District, bordering the American River. The new community will sit on 65 acres of in-fill land and include 2,350 residential units, 840, 00 square feet of office space, 140,000 square feet of retail space, and a new light rail station for the Regional Transit Green Line. The Green Line will connect Township 9 to Downtown and eventually continue on to Natomas and the airport as part of the Downtown-Natomas-Airport alignment. Additional project work will include relocation and renovation of the existing Scale House, mass grading of the site, and improvements to surrounding streets, including Richards Boulevard and 7th Street. The project also involves construction of new streets, including Riverine Way, Cannery Avenue, Chill Avenue, Township 9 Avenue, and Vine Street. The project is expected to achieve Gold status for The U.S. Green Building Council’s LEED for Neighborhood Development program.

MatriScope provided special inspections and materials testing services during construction of the new light rail station, renovation the scale house, mass grading, road improvement, and sitework. Services include trenchwork, slab-on-grade and precast concrete, site concrete, landscaping, grading, and underground and dry utilities.

LINDA WASTEWATER TREATMENT CENTER UPGRADES & EXPANSION
MARYSVILLE, CA

This project consisted of the upgrade and expansion of a wastewater treatment plant (WWTP) to increase capacity, and construction of new facilities to provide tertiary treatment of wastewater for the Linda County Water District. The District’s existing treatment system consisted of the headworks, primary clarification, a trickling filter, secondary clarification, disinfection and de-chlorination, and sludge digesters. The project increased average dry weather flow from 1.8 to 5 million gallons per day. The project site encompassed the existing WWTP on a 15-acre parcel of District property and an additional 22-acre parcel to the north of the existing WWTP purchased in 2003 for expansion.

MatriScope provided material testing and special inspections including earthwork, cast-in-place concrete, and structural steel and welding.

RELOCATE TRUCKEE AGRICULTURE STATION
TRUCKEE, CA

This project consisted of the construction of the Truckee Agriculture Station replacement facility located just east of the Town of Truckee. The station consists of three structural steel buildings to accommodate inspection of interstate vehicles and trucks, an administration building, and separate structures to house a well and pump facility. Demolition of the existing agriculture station was performed during the Fall of 2006 corresponding with the completion of the replacement facility.

MatriScope provided the Caltrans approved Resident Engineer, field and laboratory testers and performed inspections and testing services related to soil compaction using Caltrans calibrated nuclear gauges, asphalt, portland cement concrete placement and sampling, foundation observation, structural steel, and masonry.

4800 REDWOOD ROAD REPAIR PHASES I & 2
NAPA, CA

Phase I of the 4800 Redwood Road Repair project consisted of construction of new soldier pile wood lagging retaining wall and back drain system. Phase II involved the similar construction of new soldier pile wood lagging retaining wall, 50 feet long and 10 feet high. The scope of both phases of work includes construction area signing, traffic control, road and structural excavation and backfill, road structural section reconstruction, metal bean guardrail installation, roadway signage, the installation of rock slope protection, erosion control fabric and hydro-seeding for permanent erosion control and cleanup.

MatriScope performed special inspections, acceptance sampling, and material testing services related to earthwork, roadway excavations, backfill, subgrade, asphalt, and cast-in-place concrete.

HWY 267 & NORTHSTAR DRIVE IMPROVEMENTS
TRUCKEE, CA

The Northstar Drive intersection improvements were designed to mitigate the impact of increased traffic flow related to the $1.5 billion expansion the Northstar ski resort. Work included a new signal at HWY 267 and Northstar drive and related civil, electrical, underground utilities and asphalt installation.

MatriScope provided Caltrans approved Resident Inspector services to oversee construction management and inspection of road and highway construction incorporating; underground utilities, electrical, pipeline, civil and infrastructure improvements. In addition, all geotechnical engineering and special inspection services related to engineered fill, concrete, baserock, and asphalt placement was inspected and tested by MatriScope.

HIGHLANDS VIEW DRIVE, NORTHSTAR RESORT
TRUCKEE, CA

Highlands Drive is a new seven-mile road constructed through mountainous terrain at the Northstar Resort area to the south of Truckee, California. The project consists of new roadway, seven precast concrete bridges, rockery wall and retaining walls. Roadway cuts and fills were on the order of 15 to 25 feet in height. The road will serve new areas of the resort as well as provide emergency access.

MatriScope prepared a geotechnical investigation for the project and provided engineering consulting services during design and field observation and testing services during construction.