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Scientific Services Projects - Requests for Proposals

The Environmental Affairs Division (ENV) manages its contracts for scientific services by issuing requests for proposals (RFPs) to solicit proposals from service providers. ENV issues contracts pursuant to the Texas Transportation Code, Chapter 223, Subchapter D, and 43 TAC 9.80-9.88.

Current RFP:

Environmental Radiocarbon Analytical Services 57-5RFPSA003.  ENV is soliciting proposals for one indefinite deliverable, scientific services contract for performing radiocarbon dating services required for transportation activities under federal and state statutes as set forth in a memorandum of understanding between the Texas Historical Commission (THC) and TxDOT and a programmatic agreement between the Advisory Council on Historic Preservation, the Federal Highway Commission, THC and TxDOT.

Download the specifications and other required documents on the state Comptroller's Electronic State Business Daily website.

Prospective proposers who have obtained this RFP from TxDOT’s website must notify TxDOT of their interest to receive information regarding clarifications or amendments to the RFP package. Proposers who have not notified TxDOT of their interest waive all claims to redress if they submit proposals that receive reduced scores because the proposals do not incorporate or respond to clarifications or amendments to the RFP package. Prospective proposers who have downloaded this RFP may notify TxDOT of their interest by email or mail it to the following via U.S. Postal Service (USPS) mail or commercial delivery to:

Texas Department of Transportation
Attn: Dr. Jim Abbott – ENV
118 East Riverside Drive
Austin, TX 78704

The notification must contain the RFP number, proposer’s name, point of contact, mailing address, voice and fax telephone numbers and email address. All questions or clarifications must be submitted in writing.  

Upcoming RFPs

  • Biological General Services. ENV plans to request proposals for up to five indefinite delivery contracts to perform biological services, including karst related services required for transportation activities under federal and state statutes. The contracts may be awarded to perform the following services statewide:
    • Surveys for protected species and/or habitat of protected species
    • Analysis of stream modifications and associated habitats
    • Biological analysis to support the ESA, section 7 consultation with the United States Fish and Wildlife Service (USFWS), preparation of an ESA Biological Assessment (BA) or Biological Evaluation (BE), or ESA section 10.a permit
    • Biological analysis to support impacts characterization, including habitat and species surveys, to migratory birds
    • Biological analysis to support Essential Fish Habitat (EFH) consultations and preparation of EFH Assessment
    • Coordination with state and federal resource agencies
    • Data mining from federal, state, or local entities, universities and/or other resources as necessary to complete the species/habitat assessment
    • Preparation of Biology related sections for environmental documents, including the National Environmental Protection Act (NEPA)
    • Habitat assessments, analysis, and presence/absence surveys for protected karst species
    • Geologic Assessments and Solution Feature Plans for karst studies
    • Groundwater and other technical analyses that may support karst invertebrate impacts analysis
    • Geophysical analysis of known or suspected karst features
    • Other biological support services

TxDOT plans to post the RFP and notices of request for letters of interest sometime in March 2015. 

  • Statewide Environmental Consulting Services – Hazardous Materials: ENV anticipates issuing a RFP soliciting for five indefinite deliverable contracts pursuant to the Texas Transportation Code, Chapter 223, Subchapter D, and 43 TAC §§9.80-9.88. Services to be requested include all non-engineering related work necessary to complete hazardous materials initial environmental site assessments, Phase I and Phase II environmental site assessments, risk-based assessment investigations and evaluations, preventive action/corrective action plans, and project oversight for impacts to TxDOT facilities and rights-of-way statewide. The RFP and notice of request for letters of interest are anticipated to be posted on this website in March 2015. Potential providers may receive a copy of the RFP by submitting a letter of interest to ENV or by downloading from this website after the RFP is posted. RFPs will not be mailed prior to the posting.
  • Statewide Environmental Stormwater Services: ENV anticipates issuing a RFP soliciting for four indefinite deliverable contracts pursuant to the Texas Transportation Code, Chapter 223, Subchapter D, and 43 TAC §§9.80-9.88. The services to be acquired include: environmental storm water services required under federal and state statutes as set forth in Sections 402 and 303 of the Clean Water Act (Title 33 of United States Code, Chapter 26, Subchapter I, §§1251-1387), 30 Texas Administrative Code 213, and other statutes and regulations related to compliance with storm water environmental standards. The RFP and notice of request for letters of interest are anticipated to be posted in March 2015. Potential providers may receive a copy of the RFP by submitting a letter of interest to ENV or by downloading after the RFP is posted. RFPs will not be mailed prior to posting on this website.