Mariposa Portable Santitation LLC

Mariposa Portable Sanitation LLC, a for-profit partnership based in El Portal, California, supplies portable toilet and handwash station rentals paired with comprehensive servicing operations to the National Park Service as a prime contractor on a single-award indefinite delivery contract and 100 percent of its federal work. The company holds a small-business set-aside position and competes exclusively under total small business designations across its primary vehicle, though most individual delivery orders carry no additional set-aside. Mariposa has worked exclusively with two Department of the Interior agencies: the National Park Service Pacific West Region (180 awards, $8.3 million combined potential value) and the Bureau of Land Management California Region (3 awards, $77 thousand).

Mariposa's capability footprint is narrow and specialized. The vendor rents and services portable sanitation equipment—portable toilets and handwash stations—with maintenance frequencies ranging from standard weekly schedules to intensive five-times-per-week servicing during peak visitation periods at Yosemite National Park. Representative delivery orders include a $145,356 contract in May 2023 for portable toilet rentals and servicing across multiple Yosemite locations, a $112,052 award in May 2023 for Tuolumne Meadows area services, and a $82,166.85 delivery order awarded in December 2025 at the Chinquapin location with completion extending through December 2026. Recent work includes a $76,059.20 delivery order for Big Oak Flat 2 (awarded April 30, 2026) and a $75,633.18 award for Tuolumne Meadows (awarded May 8, 2026), both firm fixed-price with performance at Yosemite. The vendor also conducts emergency sanitation support during incidents such as the Kibbie Fire and provides toilet-pumping and equipment-only rental services when park operations demand specialized staffing.

Mariposa operates under four parent vehicle IDIQs, all issued by the National Park Service Pacific West Region. The primary vehicle—Indefinite Delivery Contract 140P8523D0002, valued at $2 million, awarded April 6, 2023, and set to expire April 30, 2027—carries 72 task orders ($1.8 million combined potential value) and serves as the dominant source of delivery orders. Three legacy single-award IDIQs continue to generate task orders: contract 140P8520D0005 ($1 million ceiling, 49 task orders, $987 thousand combined value), contract INP16PC00283 ($1 million ceiling, 35 task orders, $971 thousand combined value), and contract INP12PC21154 (16 task orders, $252 thousand combined value). Work is performed at multiple locations throughout Yosemite National Park, including Happy Isles, Chinquapin, White Wolf Campground, Foresta Campground, Crane Flat, Arch Rock, Big Oak Flat entrance stations, Horsetail Falls, Wawona, and the NPS Warehouse Commissary in El Portal, California.

Activity has remained consistent over the past five years—20 awards in 2022, 23 in 2023, 28 in 2024, 21 in 2025, and 11 in 2026 (year to date)—with total awards across all sources reaching 184. Ten awards with ultimate completion dates within the next twenty-four months carry combined potential value of $325 thousand, representing modest recompete exposure. Combined potential value across all awards sits at $8.4 million, with $4.2 million obligated to date (50 percent execution). The vendor carries no subcontract footprint; all work is delivered as prime. NAICS categorization reflects the portable sanitation focus, with 180 awards under Septic Tank and Related Services (NAICS 562991) and one award each under other miscellaneous services categories. Mariposa has been registered in SAM.gov since March 2005 and maintains a focused, single-customer operational posture centered on seasonal and operational sanitation support for visitor facilities throughout the Pacific West Region.