Geotechnical Engineering Services

PARIKH’s projects range from a small “green” solar power project to major highway interchanges and mega design-build contracts.

Geotechnical Engineering Services Include:

• Geotechnical/Geologic investigations
• Foundation design
• Seismic and fault studies
• Research and development relevant to the Geosciences.

These broad-based project services include:

• Transportation
• Rail and transit
• Commercial and industrial improvements
• Public buildings and infrastructure
• Water resources (levee and flood control facilities)
• Airports and associated improvements
• Utilities and pipelines

Some noteworthy projects:

• BART Warm Springs Extension (WSX) and Silicon Valley Berryessa Extension (SVBX)
• BART Earthquake Safety Program, Alameda and Contra Costa Counties
• Twenty major highway corridors in the bay area (Rte. 580, 680, 80, 85, 101, 5, and 880)
• Hundreds of bridges in the greater bay area counties under Federal Highway Bridge Program (HBP)
• VTA Light Rail programs (Capitol LRT, Vasona LRT, and Capitol Expressway LRT)
• Libraries, community centers, and fire stations for City of San Jose
• California High-Speed Rail Program (Construction Packages 1 and 2-3)
• Presidio Parkway (Doyle Drive Replacement) Project, San Francisco County, CA
• San Tomas Aquino Creek Trail projects for the City of Santa Clara and Santa Clara Valley Water District (SCVWD)
• Lower Silver Creek Flood Control Protection Program – Reaches 1,2,3 5,and 6
• East and west channel flood mitigation program for the City of Sunnyvale and SCVWD
• Parking garages in San Jose, Pleasant Hill, Palo Alto and San Leandro
• Palo Alto Airport, Buchannan Field Airport, San Carlos Airport, San Mateo County Airport, and Gnoss Field Airport
• Graham Reservoir, Whisman Reservoir (Mountain View), and First Street Water Reservoir (San Jose)

Construction Materials Testing Services

PARIKH has been providing materials testing services to public agencies, including the cities, counties, Caltrans, and BART as a part of the quality assurance and quality control (QA/QC) program.  Our technicians are certified by Caltrans and American Concrete Institute (ACI).  The services include

• laboratory and field tests, including concrete, aggregates, soils, cement, hot mix asphalt, concrete slump, soil compaction
• materials analysis and evaluation for compliance
• plant inspection,
• field nuclear gauge compaction tests

PARIKH provided materials testing services to the following projects:

• Fresno 180 Braided Ramps Design Build Project, Fresno County, CA
• Santa Clara Valley Water District (SCVWD) Water Treatment Plants, Santa Clara County, CA
• Lenihan Damn Outlet Modifications Project, Santa Clara County, CA
• Kiernan at Rte.99 Interchange, Salida, Stanislaus County, CA
• Oakville Crossroad Bridge Replacement, Napa County, CA
• Stevens Creek Bridge at Stevens Canyon Road, Santa Clara, CA
• Access Improvements from Railyards to Richards Boulevard and I-5, Sacramento County, CA
• Kato Underpass and Mission/Warren Underpass, Santa Clara County, CA
• Norwood Avenue Bridge over Arcade Creek and Roadway Realignment, Sacramento County, CA

Laboratory Testing Services

PARIKH’s laboratory testing facility is located in Milpitas, California.  The laboratory is certified by Caltrans and accredited under AASHTO resource, and it also complies with U.S. Army Corps of Engineers requirements.

The laboratory is managed by experienced personnel.  Our technicians are qualified under the Cement Concrete Reference Laboratory (CCRL), American Association of State Highway and Transportation Officials (AASHTO) programs, and Caltrans.  They can perform tests per American Society for Testing and Materials (ASTM) standards and California Test Methods (CTM).

PARIKH is capable of performing the following laboratory tests:

• Classification Tests
• Gradation Analysis
• Moisture-Density
• Atterberg Limits
• Swell Test
• Hydrometer Tests
• R-Value Tests
• Consolidation Tests (pneumatic, up to 150 psi)
• Unconfined Compression Tests
• Sand Equivalent
• Resistivity Tests

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Design-Build Program

PARIKH has been involved with major design-build projects in the recent years.

Some noteworthy projects:

• BART Warm Springs Extension (WSX) and Silicon Valley Berryessa Extension (SVBX)
• Doyle Drive Replacement Project, San Francisco (Public-Private-Partnership, P3 program)
• California High-Speed Rail Project, Merced to Fresno, Construction Package 1 (CP1)
• California High-Speed Rail Project, Fresno, Kings, and Tulare Counties, Construction Packages 2 and 3 (CP 2-3)
• Route 180 Braided Ramp, Fresno (Caltrans District 6)
• Crenshaw-LAX Transit Corridor, Los Angeles County
• Peninsula Corridor Electrification Project, Santa Clara, San Mateo, San Francisco Counties
• Purple Line Extension, Sections 2 and 3, Los Angeles County

Environmental Support Services

PARIKH has completed environmental studies for major highway and railroad corridors.

Our environmental services include:

• Environmental Site Assessments (ESA), Phases I studies
• Soils and Geologic studies in support of Environmental Documents
• Fault and Seismicity information for CEQA and NEPA documents
• American Society for Testing and Materials (ASTM) Standards of Practice for Phase I Environmental Site Assessments and other documents
• CEQA and NEPA documents for State and Federally funded infrastructure projects