Unofficial Notice of Invitation to Bid (NIB)

General Bid Items

• Quantity: 1  Unit: LS  Work Item: Mobilization (including geophysical utility clearance for AM-63 well site).
• Quantity: 1  Unit: LS  Work Item: Conductor Casing Installation (for AM-63B only). Specifications: Inspector on-site during drilling and installation; ensure representative formation samples collected at 5-foot intervals; log cuttings using Wentworth soils classification; check and measure all casing for proper installation techniques.
• Quantity: 1  Unit: LS  Work Item: Borehole Drilling (including wiper passes). Specifications: Inspector on-site; ensure representative formation samples collected on minimum 5-foot intervals and at changes in lithology; testing of drilling fluid properties; proper sample collection and placement in zip-lock bags and chip trays; lithologic logging using the Wentworth Scale for grain size, Munsell soil color, and component percentage; check Contractor's drill pipe tally; drilling rate limited to a maximum of 20 feet per hour for direct mud rotary method.
• Quantity: 1  Unit: LS  Work Item: Geophysical Logging. Specifications: Inspector on-site to witness geophysical logging; obtain copies of logs for OCWD; logs include spontaneous potential, 16-inch normal resistivity, 64-inch normal resistivity, laterolog 3 (guard resistivity), natural gamma, sonic velocity -variable density, and caliper log.
• Quantity: 1  Unit: LS  Work Item: Well Construction. Specifications: Inspector on-site for installation of casing, screen, gravel pack, bentonite-sand seals, and cement seal; ensure contractor measures each casing and screen joint and completes necessary tally; verify contractor's casing tally accuracy; ensure screen intervals, gravel pack, and seals constructed per final well design; obtain all back-fill material receipts for OCWD; take accurate count of all construction tremie on site prior to gravel and seal placement; measure and record all tremie pipe installed; calculate and record borehole and back-fill volumes to ensure no bridging during installation; make a field well diagram including accurate depths for screen, casing, gravel pack, seals, and back-fill material volumes.
• Quantity: 1  Unit: LS  Work Item: Well Development (including disinfection). Specifications: Inspector on-site; measure and record static and pumping water levels, airline and pump setting depths, discharge rates, field parameters (pH, TDS, EC, temperature, settleable solids); record equipment operation times; collect groundwater samples for OCWD analysis and transport to lab within 24 hours (Consultant provides sample containers, coolers, and chain of custody, keeps samples cold with water ice); disinfect well with 50 ppm sodium hypochlorite solution (12- to 24-hour waiting period), followed by approximately 1 hour airlifting.
• Quantity: 1  Unit: LS  Work Item: Site Clean-up, Vault Installation, and Video Survey. Specifications: Conduct daily site visits during clean-up; Inspector on-site during vault installation to ensure surface completion per contract documents; Consultant on-site during video surveys and will obtain DVD copies of survey and report.
• Quantity: 1  Unit: LS  Work Item: Well Survey. Specifications: Subcontract state-licensed surveyor; establish survey control using NAD83 horizontal datum coordinates plus NGVD29 and NAVD88 vertical datum; measure coordinates (to nearest 0.1 feet) on well vault lid; measure elevations of ground surface at northwest corner of concrete well pad; measure elevation (to nearest 0.01 feet) at top of well casing with cap removed; final product is a report stamped with a licensed survey seal.
• Quantity: 1  Unit: LS  Work Item: Prepare Well Construction Report. Specifications: Prepare Preliminary Draft Well Construction Report for District review; submit 2 hard copies and 1 PDF file (bookmarked, text-searchable) of Final Well Construction Report; report content to include Introduction, Construction Activities Description (by task), Figures (Location Map(s), Final As-Built Well Diagram s, Lithologic Logs), Tables (Well Construction Dates (by task)). Appendices to include Permits, Lithologic Logs, Geophysical Logs, Inspector's Field Reports/Notes, Contractor's Daily Logs, Development Records, Survey Report, Water Quality Sample Results, Photo Log.

NAICS Classification

NAICS 541330 – Engineering Services (General project oversight, well design review, technical consulting, report preparation), NAICS 541360 – Geophysical Surveying and Mapping Services (Geophysical utility clearance coordination, logging witness), NAICS 541370 – Surveying and Mapping (except Geophysical) Services (Well surveying, elevation measurements, creating location maps), NAICS 541620 – Environmental Consulting Services (Water quality sample handling, environmental compliance guidance, groundwater monitoring related consultation), NAICS 237110 – Water and Sewer Line and Related Structures Construction (Oversight of monitoring well drilling and installation)

Records and Due Date

This bid opportunity was entered into BidAmerica on February 24, 2026, and was last updated on February 24, 2026. All bids and/or proposals are due on March 23, 2026.

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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 Orange County Water District. 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 Orange County Water District prior to bidding.