Unofficial Notice of Invitation to Bid (NIB)

Riverside County Transportation Department is seeking bids from qualified and interested contractors for the following project titled, PROFESSIONAL CONSULTANT SERVICES FOR PLAN CHECK OF WATER QUALITY MANAGEMENT PLANS (WQMP), HYDROLOGY REPORTS, AND PLAN CHECK SERVICES FOR THE COUNTY OF RIVERSIDE, TRANSPORTATION DEPARTMENT, identified under Solicitation ID: -. Work is to be performed near 4080 Lemon St 8th floor, Riverside, CA 92501, USA in Riverside County.

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General Project Description

This Request for Proposal (RFP) is for professional consultant services to perform plan checking of Water Quality Management Plans (WQMP), Hydrology Reports, and associated civil engineering improvement plans for private development projects within the County of Riverside. The scope encompasses reviewing Preliminary and Final WQMP and Hydrology Report submittals to ensure compliance with State and local requirements, including the County's National Pollutant Discharge Elimination System (MS4) Permits and relevant County ordinances/guidelines. Additional services may include plan checking for street improvement, striping, utility, street lighting, and grading plans as requested by the Transportation Department. The successful firm will provide recommendations for approval of these plans.

General Bid Items

Quantity: - Unit: - Work Item: Plan Check of Water Quality Management Plans (WQMP) (Preliminary and Final)
Quantity: - Unit: - Work Item: Plan Check of Hydrology Reports
Quantity: - Unit: - Work Item: Plan Check of Grading, Storm Drain, and other Improvement Plans associated with private development projects
Quantity: - Unit: - Work Item: Ancillary Plan Check services
Quantity: - Unit: - Work Item: Recommendation for approval of WQMP, Hydrology Reports, and other improvement plans based on review findings

NAICS Classification

NAICS 541330 – Engineering Services (For professional engineering review of hydrology reports, grading plans, storm drain plans, street improvement plans, and utility plans.), NAICS 541620 – Environmental Consulting Services (For professional environmental consulting and review of Water Quality Management Plans (WQMP) and ensuring compliance with NPDES and MS4 permits related to water quality.)

Records and Due Date

This bid opportunity was entered into BidAmerica on February 13, 2026, and was last updated on February 13, 2026. All bids and/or proposals are due on March 16, 2026.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Riverside County Transportation Department. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Riverside County Transportation Department prior to bidding.