Subsurface Investigation Services

The Delaware Department of Transportation is seeking firms for statewide subsurface investigation, drilling, sampling, laboratory testing, and related services under a three-year IDIQ agreement with two possible one-year extensions.

Delaware > Department of Transportation


General
Open
DOT262216-2217-SUB_INVEST
Sep 24, 2026 06:00 PM
Aug 21, 2026 12:00 PM
$3,000,000.00
3 years base + 2 × 1 year options
Request for Proposal (RFP)
State
Ask AI about this solicitation
Original Solicitation Links
[

DOT262216-2217-SUB_INVEST

]

subsurface investigation services

Contact
julia.vanderschel@delaware.gov
+13027602031
Submission Instructions
Description

The Delaware Department of Transportation is soliciting professional services for statewide subsurface investigations under an indefinite-delivery/indefinite-quantity agreement. Work includes drilling through unconsolidated sediment and rock, rock coring, standard penetration testing, disturbed and undisturbed sampling using Shelby tubes, visual examination and documentation of samples, and sample reporting. Additional services may include geo-probe work, observation wells, double-ring or borehole infiltration testing, piezometer testing, soil index testing, triaxial testing, direct shear testing, unconfined compressive strength testing of intact rock core, and pH resistivity testing. The selected firms will be responsible for field work in varied terrain, including riverbeds, canals, marshes, clay, sandy areas, bedrock, and weathered rock; required maintenance of traffic; utility coordination; applicable drilling permits; and ensuring drilling personnel hold Delaware Well Driller's Licenses. Equipment may include barge-mounted equipment, all-terrain vehicles, rock-drilling equipment, and standard penetration testing equipment. Up to two agreements may be awarded, with individual agreement values not exceeding $3,000,000; there is no guarantee of actual agreement value. Proposals must include pricing, sample boring logs, GSA SF330 architect-engineer qualifications, required certifications, and the specified proposal copies.

Classification Codes
NAICS541380Testing Laboratories and Services
PSCB519Geotechnical Studies
Smart Codes
subsurface investigationgeotechnical drillingsoil testing
Specifications
Service
Timeline
Aug 21, 2026-Solicitation Ad Date
Sep 24, 2026-Deadline for Bid Responses
Requirements
Required
  • Worker's Compensation and Employer's Liability Insurance
  • Commercial General Liability — $1,000,000.00
  • Errors and Omissions — $1,000,000.00
  • Automotive Liability Insurance — $1,000,000.00
Scored
  • Client point of contact required for each reference
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