F--2-BACA_1-HAYSTACK SDV

Questions & Answers / Clarifications

This document provides responses to vendor questions regarding Solicitation 140A0926Q0006 for Haystack and Baca Shep Dip Vat (SDV) Sampling/Removal.

• Previous Work: While BIA has utilized past SDV reports, current reports are unavailable. Toxaphene sampling was done previously, but soil sampling for contamination is required for all three locations.
• Analysis Scope: Phase I investigations should include EPA Method 8081A (chlorinated pesticides, toxaphene). Arsenic analysis is also required.
• Disposal Costs: Contractors should include estimates for both hazardous and non-hazardous waste disposal, as the project involves cleaning a contaminated area. A change order is not expected for hazardous waste disposal.
• Bid Schedule: The bid schedule is combined for all three dip vat sites, not itemized per site.
• Pre-Work Submittals: Consultation with the Navajo Nation Historical Preservation Program and Navajo Nation Fish and Wildlife departments is required. The clearance process documentation is attached.
• Debris Removal Quantities: Estimated removal is approximately 900 cubic yards of soil and 554 tons of concrete and contaminated soil from previous projects. General waste debris is estimated at less than 20 cubic yards. Site visits are at the contractor's expense; Haystack site access is restricted until the project starts.
• Clean Soil Backfill: "Clean soil" is defined as free of hazardous contaminants. No prior approval is needed if clean fill is certified and the certification is submitted in the final report.

Question 9 regarding a 1-week extension to the due date is subject to the discretion of the Acquisition Department.

Amendment / Modification

• The solicitation response due date has been extended to February 11, 3:00 PM MST. This extension is specifically for government responses to questions.

• The original solicitation number is 140A0926Q0006.

• The effective date of this amendment is January 20, 2026.

• The due date for offers/responses has been modified.

• Item 00010, which pertains to "OTHER ENVIRONMENTAL SERVICES," has been updated to reflect the new response due date.

• Bidders are granted an extension for the response due date to February 11, 3:00 PM MST.

• All other terms and conditions of the original solicitation remain in full force and effect.

Other / Unclassified

This document outlines the "Archaeological Clearance" Process on the Navajo Nation, detailing the steps required for any ground-disturbing activities. It also describes the "Navajo Nation Dept. of Fish & Wildlife Biological Resource Clearance Process." Both processes involve submitting requests, obtaining permits, conducting surveys, and receiving determinations or approvals before proceeding with projects.

Potential bidders involved in projects requiring ground disturbance on Navajo Nation lands, or those that may impact biological resources, need to understand these clearance processes. This information is crucial for project planning, compliance, and ensuring that all necessary archaeological and biological reviews are completed. The documents provide contact information and outline the steps for obtaining required approvals, which may be a prerequisite for contract performance.

Amendment / Modification

• This amendment (0003) to solicitation 140A0926Q0006 is effective 01/20/2026.

• It amends the solicitation to include "Haystack and Baca SDV Photos."

• All other terms and conditions remain in full force and effect.

• The procurement remains a Small Business Indian Economic Enterprise Set-Aside.

• The contractor shall provide labor, materials, equipment, and transportation for the remediation and restoration project for Baca and Haystack Sheep Dip Vat (SDV).

• Item 00010 is modified to include "Haystack and Baca SDV Photos." The Product/Service Code is F999 (OTHER ENVIRONMENTAL SERVICES).

• The Period of Performance for Item 00010 is updated to 01/05/2026 to 06/30/2026.

• Solicitation 140A0926Q0006

• Item 00010 (Scope of Work, Product/Service Code, Period of Performance)

• The amendment does not explicitly state a change to the proposal deadline. However, bidders should acknowledge receipt of this amendment as instructed in Section 11 of the solicitation.

Form / Attachment / Pricing Sheet

This document contains photographic evidence of sites labeled "Haystack SDV," "Baca (New) SDV," and "Baca (Old) SDV." These images likely serve as visual documentation or site surveys related to an opportunity.

• Photographs of various outdoor locations, including structures, fencing, and terrain.
• Labels indicating specific site names (Haystack, Baca New, Baca Old) and the designation "SDV" (likely Site Visit or similar).

This document provides visual context for potential sites relevant to the opportunity. Bidders should review these images to understand the physical characteristics of the locations, which may be important for planning, site assessment, or understanding the scope of work if the opportunity involves these areas.

Amendment / Modification

• The response due date for solicitation 140A0926Q0006 has been extended to February 9, 2026, 3:00 PM MST.

• This amendment includes the Government's Responses to Questions regarding the SOW.

• No further questions will be accepted.

• The solicitation itself (140A0926Q0006) is amended.

• Item 00010 details are modified to reflect the extended response date and inclusion of Q&A responses.

• The proposal submission deadline is extended to February 9, 2026, 3:00 PM MST.

• All other terms and conditions remain unchanged.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document is a Preliminary Assessment/Site Assessment Report for the Navajo Nation Toxaphene Dip Vats Sites III. Its objective is to evaluate potential hazardous waste sites within the Navajo Nation, specifically focusing on abandoned sheep dip vat (SDV) sites, to assess their potential threat to nearby residents and drinking water sources.

• The report details the assessment of 24 SDV sites across 23 chapters within the Navajo Nation.

• It covers the historical use of toxaphene and lindane-based pesticides for livestock treatment from the 1930s to the late 1980s.

• The document outlines the operational history of these dip vats, including their construction, use, and disposal of pesticide solutions.

• It presents findings from investigative efforts, including previous sampling and analysis, and new sampling activities conducted by the Navajo Superfund Program (NSP).

• The report includes an environmental hazard assessment, evaluating threats to public health, welfare, and the environment, including risk assessments related to toxaphene contamination.

• The report identifies sites with toxaphene concentrations at or above the Action Level of 40 ppm, as established by the ATSDR.

• It discusses risk-based soil goals for dip vat cleanups, with recommended cleanup goals between 0.4 to 40 ppm based on cancer risk.

• Performance is measured by identifying sites that pose a public health hazard and require intervention actions or remediation.

• The report covers sites located within the Navajo Nation, spanning parts of Arizona, New Mexico, and Utah.

• The historical period of dip vat use was from the early 1930s to the late 1980s, with some remaining in use until 1987.

• Sampling activities were conducted in April 1998.

• The document highlights the potential for contamination of drinking water supplies, soils, and sensitive ecosystems.

• It notes that some SDV sites are located near domestic water sources, natural springs, and sensitive habitats.

• The report identifies that many Chapters lack the capacity to acquire contractors or technical expertise to remove these SDV sites.

• ATSDR health consultations are referenced for providing general information on adverse health effects and assisting in referring sites for remediation.

Questions & Answers / Clarifications

This document contains questions submitted by potential bidders and the Government's responses regarding the "2-BACA_1-HAYSTACK SHEEP DIP VAT (SDV) SOLICITATION 140A0926Q0006".

• Previous Reports: Government reports for Baca #1, Baca (New), and Haystack SDV sites are currently unavailable. Soil sampling for contamination is required for all three locations.
• Sampling Analysis: Sampling will follow EPA Method 8081A. While Toxaphene, Lindane, and Dieldrin are common chlorinated pesticides, Coumaphos (an organophosphate) was also frequently used. Contractors will use professional expert judgment for additional analyte analysis.
• Debris Removal (Baca New SDV): General waste debris at the Baca New SDV site is estimated to be less than 20 cubic yards. Photos are available for details. Site visits are permitted at the contractor's expense.
• Haystack SDV Water Source: The well near the Haystack SDV (16T-552) is considered an "available water source" requiring sampling.
• Scope of Removal: Removal includes all visible debris, including those partially buried, outside the immediate vat footprint.
• Estimated Quantities: Previous similar projects estimated approximately 900 cubic yards of soil removal and 554 tons of concrete and contaminated soil disposal. The quantity of soil disposal will depend on contamination levels. General waste debris is estimated at less than 20 cubic yards.
• Reporting: A single consolidated final report, clearly separating the three projects, will be sufficient.
• Sampling Grid: The sampling grid will be utilized for both Task 2 and Task 3 to determine the extent of soil contamination and excavation efforts.
• Previous Investigations: The 1999 PA for Haystack ("Old Baca-Haystack Dip Vat") is available. No other previous investigations exist for the two Baca SDVs due to a lack of historical reports.
• Borings: The number of borings required is based on the sample grid.

These clarifications provide specific details on sampling requirements, debris removal scope and quantities, reporting structure, and the availability of previous reports, which will impact bidder's planning, cost estimation, and proposal preparation.

Amendment / Modification

This amendment modifies solicitation 140A0926Q0006 with an effective date of January 20, 2026.

Key changes include:

• The last date to accept questions is extended to January 27, 2026, at 3:00 PM. No further questions will be accepted after this time.

• All other terms and conditions remain in full force and effect.

• The solicitation is amended as noted in Item 11.

• Item 00010, which pertains to the "OTHER ENVIRONMENTAL SERVICES" (Product/Service Code F999), has been updated to reflect the new question deadline.

• The deadline for submitting questions has been extended to January 27, 2026, 3:00 PM.

• Bidders should acknowledge receipt of this amendment.

• This procurement is a Small Business Indian Economic Enterprise Set-Aside.

• The contract involves a remediation and restoration project for Baca and Haystack Sheep Dip Vat (SDV).

• The Period of Performance is from January 5, 2026, to June 30, 2026.

Form / Attachment / Pricing Sheet

This document is the "Indian Affairs Indian Economic Enterprise Representation Form." It serves as a self-certification for offerors to attest that they meet the definition of an "Indian Economic Enterprise (IEE)" as defined in the Department of the Interior Acquisition Regulation (DIAR) Part 1480, "Acquisitions Under the Buy Indian Act."

• Solicitation/Sources Sought/RFI Number
• Project Title
• Date of Form Submission
• Name of Federally Recognized Tribal Entity
• Name of the 51% (or greater) Owner of the IEE Firm
• Legal Business Name
• Certifying Signature
• Unique Entity ID (UEI)
• Printed Name

Bidders must complete and submit this form to represent their eligibility as an Indian Economic Enterprise. The form requires information about the business, its ownership, and tribal affiliation. It also outlines the legal implications of submitting false information, including penalties under federal law. The enterprise must meet the IEE requirements at the time of offer, contract award, and throughout the contract term.

Other / Unclassified

This document is a U.S. Department of Labor Wage Determination under the Service Contract Act (SCA). It lists prevailing wage rates and fringe benefits for various occupations in specific New Mexico counties (Cibola, Colfax, McKinley, Mora, Rio Arriba, San Miguel, Taos).

This document is crucial for any bidder responding to a government contract that is subject to the Service Contract Act. It establishes the minimum wage rates and fringe benefits that must be paid to employees performing work under such a contract. Bidders must consult this wage determination to accurately calculate labor costs for their proposals and ensure compliance with federal labor laws. Key information includes:

• Occupational Wage Rates: Minimum hourly rates for a wide range of job classifications.
• Fringe Benefits: Required health and welfare benefits, vacation time, and paid holidays.
• Executive Order Compliance: Notes on Executive Orders 13706 (Paid Sick Leave) and 13658 (Minimum Wage), including specific hourly rates and conditions for their application.
• Hazardous Pay Differentials: Additional pay for work involving ordnance, explosives, and incendiary materials.
• Uniform Allowance: Guidelines on employer responsibility for uniform costs and maintenance.
• Conformance Process: Procedures for classifying and determining wages for occupations not explicitly listed in the determination, using Standard Form 1444 (SF-1444).

Solicitation / RFP / RFQ

This solicitation is for a Small Business Indian Economic Enterprise Set-Aside Procurement. The contractor will be responsible for providing all labor, materials, equipment, and transportation to conduct the remediation and restoration project for Baca and Haystack Sheep Dip Vat (SDV).

• Remediation and restoration project for Baca and Haystack Sheep Dip Vat (SDV).

• Services fall under Product/Service Code F999: OTHER ENVIRONMENTAL SERVICES.

• Period of Performance: January 5, 2026, to June 30, 2026.

• Delivery Date: June 30, 2026.

• Solicitation Number: 140A092600006

• Solicitation Issue Date: January 20, 2026

• Offer Due Date/Local Time: February 2, 2026, 1600 MS Time.

• This acquisition is a set-aside for Small Business.

• The contracting office is BIA NAVAJO 00009, located in Gallup, NM.

• FAR clauses 52.212-1, 52.212-3, and 52.212-5 are incorporated by reference or attached.

Solicitation / RFP / RFQ

This document is a combined synopsis/solicitation for commercial products or services, prepared in accordance with FAR Subpart 12.6. It constitutes the only solicitation, and proposals are being requested. The government contemplates awarding a Firm-Fixed-Price (FFP) Purchase Order.

• The specific requirements and deliverables are detailed in Attachment 1, Statement of Work (SOW).

• Line items for pricing are provided in the Attached Price Schedule.

• Contract Type: Firm-Fixed-Price (FFP) Purchase Order.

• Period of Performance: 120 days from the date the Notice to Proceed is issued.

• Estimated Value: Not explicitly stated, but the NAICS code 562910 (Remediation Services) has a Small Business size standard of $25M.

• Submission Deadline: Quotes must be received on or before the date and time specified on the SF-1449. Specific date and time to be confirmed on SF-1449.

• Submission Method: Quotes must be submitted via email to Elsie Begay, Contracting Officer, at elsie.begay@bia.gov. The subject line must be "Company Name, Quote in Response to 140A0926Q0006".

• Required Documents: A signed and completed copy of the IEE Representation Form must be included. Failure to submit may result in disqualification.

• Pricing: Must be in Firm Fixed-Price (FFP) format and address all elements of the SOW.

• Evaluation Factors (in descending order of importance):

  1. Technical Approach
  2. Key Project Management/Technical Support (qualifications, experience on Tribal trust lands, Project Manager's resume)
  3. Past Performance (3-5 client references, list of projects within the past 5 years with descriptions)
  4. Price

• This requirement is set-aside 100% for Indian Small Business Economic Enterprises (ISBEEs).

• Offerors must meet the definition of an Indian Economic Enterprise (IEE) as defined in DIAR 1480.201 and intend to meet the definition throughout contract performance.

• Questions related to the requirement must be submitted via email by Monday, February 02, 2026, no later than 4:00 PM MDT.

• The performance location will be Baca and Haystack Sheep Dip Vat (SDV) Sampling Removal.

• Point of Contact (POC) for award is to be provided at award.

Statement of Work (SOW) / Performance Work Statement (PWS)

This project aims to eliminate environmental hazards associated with three former sheep dip vat (SDV) sites in Prewitt, New Mexico, and restore the affected areas to their natural condition. The work involves site assessments, remediation of contaminated materials, and restoration.

• Remediation and restoration of three former SDV sites: Baca #1 SDV, Baca (New) SDV, and Haystack SDV.

• Comprehensive site assessments to identify and address toxaphene contamination in soil and potentially water.

• Removal of all remaining structures and remnants of the vats.

• Excavation and proper disposal of contaminated soils.

• Final site restoration, including backfilling and reseeding with native plant species.

• Soil screening value for toxaphene is 0.49 parts per million (ppm).

• Excavated areas will be backfilled with clean soil and compacted to 90% proctor density.

• Disturbed areas will be reseeded with a native species mix.

• Period of Performance: 120 calendar days from the Notice to Proceed.

• Location: Prewitt, New Mexico, within the jurisdiction of the Baca Chapter on the Navajo Nation reservation.

• Contractor must prepare a work plan, project schedule, soil sampling plan, and quality assurance/quality control plan.

• A Health and Safety Plan (HASP) is required, including HAZWOPER training for all workers.

• Consultation with Navajo Nation Historical Preservation Program and Fish and Wildlife department is required.

• Soil samples must be analyzed by an accredited laboratory using EPA Method 8081A.

• Contaminated soil and debris must be disposed of in a Subtitle D landfill, adhering to all applicable regulations.

• Contractor must provide a draft and final report detailing the work performed, findings, and documentation.