B--NR-ARD-271 IMPROVE ION ANALYSIS RFP

The National Park Service is soliciting proposals for the Interagency Monitoring of Protected Visual Environments (IMPROVE) Ion Analysis program. This requirement establishes a single-award, firm-fixed-price Indefinite Delivery/Indefinite Quantity (IDIQ) contract for specialized laboratory services. The scope involves extracting and analyzing approximately 18,000 nylon filters annually for nitrite, nitrate, sulfate, and chloride. The contract has a five-year ordering period from August 1, 2026, through July 31, 2031. Task Order 0001 is included in the solicitation as the baseline for operations. Proposals must demonstrate technical proficiency in ion chromatography and meet a 60-day turnaround time for data reporting. Evaluation is based on a best-value tradeoff where technical factors and personnel qualifications are more important than price. Technical proposals are limited to 50 pages and must include proof of equivalency for extraction and detection limits. Amendment 0001 restored missing pages, and Amendment 0002 added Q&A and clarified pricing schedules. Proposals are due June 22, 2026, at 12:00 PM EDT. The procurement uses NAICS 541380 and PSC B502. The scope involves extracting and analyzing ions from Module B nylon filters for nitrite, nitrate, sulfate, and chloride. The contractor manages the sample lifecycle, including receipt, custody, chromatography, and quality assurance. Performance requires a 60-day turnaround for data delivery according to IMPROVE SOPs. The initial task order will be awarded concurrently with the IDIQ. The NPS Air Resources Division requires ion analysis for the IMPROVE program, which monitors visibility and aerosol trends at 147 sites. The contractor will analyze approximately 18,000 Module B nylon filters annually for nitrite, nitr…