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The Professional, Scientific, and Technical Services sector comprises establishments that specialize in performing professional, scientific, and technical activities for others. These activities require a high degree of expertise and training. The establishments in this sector specialize according to expertise and provide these services to clients in a variety of industries and, in some cases, to households. Activities performed include: legal advice and representation; accounting, bookkeeping, and payroll services; architectural, engineering, and specialized design services; computer services; consulting services; research services; advertising services; photographic services; translation and interpretation services; veterinary services; and other professional, scientific, and technical services. This sector excludes establishments primarily engaged in providing a range of day-to-day office administrative services, such as financial planning, billing and recordkeeping, personnel, and physical distribution and logistics. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services.
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Showing 401–450 of 5986 bids that are currently: Active.
Denotes bidding opportunities that have been amended
| California - US | Agency | Bid Type | Due Date | As PDF |
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Corporate: Construct Retaining Wall, MGS, cold plane & Pavement Widening \u2013 Time-Related Overhead (Wday)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Corporate: Construct Retaining Wall, MGS, cold plane & Pavement Widening \u2013 Time-related overhead (wday)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Corporate: Construct retaining wall, MGS, cold plane & Pvmt widening - Lead compliance plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Corporate: Construct retaining wall, MGS, cold plane & Pvmt widening - Time-related overhead (wday)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Corporate: Secondary Treatment System Upgrades Project - Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Corporate: Secondary Treatment System Upgrades Project - Quality Control Testing
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Engineering and Professional Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 21, 2026 |
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LACDA26-071 Housing Inspection Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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FUSION SUPPORT - system analysis, software and system engineering and analysis, development, application and customization, and technical writing services.
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | Federal Bids | Aug. 28, 2026 |
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Environmental Compliance and Engineering Support Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 31, 2026 |
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Cable Creek Basin (Upper)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 03, 2026 |
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General Engineering Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 14, 2026 |
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Construction Quality Assurance Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 24, 2026 |
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Corporate: Wheatland Regional Sewer Pipeline Project - QC & GEOTECH ENGINEERS
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Citywide Parks Master Plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 20, 2026 |
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Corporate: Wheatland Regional Sewer Pipeline Project - SURVEYING
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Corporate: Wheatland Regional Sewer Pipeline Project - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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20th Street East Corridor Improvement Project SS4A Base Phase
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 08, 2026 |
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Corporate: CAWP Transmission Main Improvements & Tank D Replacement Project - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Corporate: Corydon Well Replacement Project - Groundwater evaluation
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Aquifer analysis
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Municipal well design
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Pumping-test analysis
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Construction development testing and abandonment oversight
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Civil engineering
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Site design
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Pipeline design
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Hydraulic analysis
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Surge analysis
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Architectural
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Sound-attenuation design
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Electrical engineering
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Topographic surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Construction surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Geotechnical investigation
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Seismic and foundation analysis
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: Corydon Well Replacement Project - Corrosion testing
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 01, 2026 |
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Corporate: NORSD Water Resource Recovery Facility (WRRF) Expansion - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 17, 2026 |
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Corporate: Avocado Heights San Jose Hills \u2013 Valley Boulevard - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Corporate: Avocado Heights San Jose Hills \u2013 Valley Boulevard - SWPPP Planning
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Corporate: Frick Unit Phase 3 Laterals - Construction Staking \/ Surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 18, 2026 |
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Corporate: Construct Maintenance Facilities \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 27, 2026 |
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Corporate: Construct Maintenance Facilities \u2013 Level 2 Critical Path Method Schedule
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 27, 2026 |
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Corporate: Construct Acceleration Lanes \u2013 Lead compliance plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 25, 2026 |
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Corporate: Construct Acceleration Lanes \u2013 Time-related overhead (ls)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 25, 2026 |
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Corporate: Construct Acceleration Lanes \u2013 Pre-storm event inspection report
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 25, 2026 |
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Corporate: Construct Acceleration Lanes \u2013 During-and post-storm event inspection report
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 25, 2026 |
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Corporate: Construct Acceleration Lanes \u2013 Stormwater annual report
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Aug. 25, 2026 |
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STREET STATE PARKING GARAGE
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 02, 2026 |
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Levi's Stadium Facility Condition Assessment
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Sep. 11, 2026 |
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