Atch 1 Statement of Work
Updated
A PDF document (3.0 MB) attached to Curecanti National Recreation Area-Septic Pump Tru, from the Departmental Offices. Due Nov 19, 2026, 1:00 PM (UTC-7).
File name: Atch_1_SOW.pdf
The full file is for paid members, or buy this bid alone.
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Black Canyon of the Gunnison National Park
Specifications:
Septic Pump Truck Tank Replacement
DATED:
9/22/2026
NATIONAL PARK SERVICE
INTERIOR REGIONS 6/7/8
Scope of Work: Vacuum Truck Tank
Replacement
Curecanti National Recreation Area – Gunnison, Colorado
GENERAL
This Scope of Work (SOW) describes requirements for the removal of the existing dualcompartment steel vacuum tank and installation of a new aluminum dual-compartment vacuum-rated tank on the NPS 2004 Freightliner FL112 (GVWR 54,000 lbs, VIN 1FVHBGAS14HM30184). The Contractor shall provide all labor, materials, equipment, tools, supervision, transportation, and incidentals necessary to furnish and install a fully functional tank assembly meeting all specifications in this SOW. Chassis has been inspected by the park as in known to be in serviceable and good condition.
BACKGROUND
The current tank is a steel two-compartment unit composed of a 500-gallon fresh/grey water compartment and a 2,500-gallon blackwater compartment. Due to age, corrosion, and structural degradation, the tank no longer meets operational needs. The chassis remains serviceable; only the tank assembly is being replaced.
SCOPE
Work includes removal of the existing tank, furnishing and installation of a new, dual compartment aluminum tank (500-gallon fresh/grey water, 2,500-gallon blackwater), integrating plumbing, valves, sight glass level indication, mounts, skids, and accessories; reconnecting existing vacuum system; testing; documentation; and delivery.
TANK ASSEMBLY REQUIREMENTS
- Total capacity: 3,000 gallons (500 fresh / 2,500 waste) - Hose trays the length of the tank on both sides
- Aluminum vacuum-rated construction
- Barrel thickness minimum 1/4 inch
- Head thickness minimum 5/16 inch
- ASME-rated dished heads
- Internal ASME-compliant baffles
- Full-length skids
- Interior liner or protective coating
- Exterior corrosion-resistant finish
- Three mechanical sight glasses installed with protective guards - No electronic tank level sensors
PLUMBING & VALVE REQUIREMENTS
- Discharge: minimum 4-inch flanged
- Intake: minimum 3-inch front and rear
- Fresh water fill: minimum 3-inch stainless, able to fill from the top and through the vacuum system.
- Brass or stainless ball valves
- Cam-lock fittings with dust caps
- Low-point drain on freshwater compartment
Integrated Fresh Water Fill System
System uses a T into discharge pipe after 4-inch ball valve with 3-inch ball valves, male 3inch camlocks, and two 22.5-degree elbows to allow attachment of 3-inch hose from
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