QA Tracker 1-55 0003

Solicitation
140P2026R0098
Question No.

GRTE 237343 - Rehabilitate 4 Lazy 4 Ranch
Sheet or
Reference

Question

Response

Force Main Installation Method: Section 33 14 15 subsection 1.1.A.2.C and Note 6 on Sheet C300 indicates the sewer force main to be plowed. Section 33 14 15 subsection 3.2.F.3 indicates “To keep within the proposed limits of disturbance, contractors may utilize alternative construction techniques such as plowing the force main”. Please confirm if open-cut trenching per Detail 1/C205 is acceptable provided work remains within the 15-ft limit of disturbance (Detail 3/C305) and one 10-ft travel lane is maintained (33 14 15 subsection 3.2.F.2).
Plowed Sections: If plowing is required, please confirm the bedding, compaction testing (33 14 15 subsection 3.2.G), and blue board insulation (33 14 15 subsection 3.2.F.7; Detail 2/C205) requirements for plowed sections.

Plowing is required for force main installation to expedite installation and minimize impact to Park operations and wildlife.
Plowing is the required method for force main installation in roadways; performance-based standards must be met.

Cobbles and Boulders: The Geotechnical-Engineering Report (Section J, Attachment 6) identifies 5–45% cobbles and boulders. Please confirm whether open cut is permitted where cobbles or boulders prevent plowing.

Plowing will occur in roadway. This method has been previously employed successfully in the park. Pipe installation must comply with performance-based standards per Wyoming DEQ. Plowing; deflection and leakage requirements must be met.
Yes, fiber to be installed in separate open cut trench.

Fiber in Common Trench: The area will be disturbed twice if the force main is plowed and the fiber is trenched in the same 15-ft strip (C300). Please confirm if the fiber can go in the same trench and the required separation if NPS approves open cut for the force main. Will contractors be able to camp or will NPS provide an RV/camper spots for contractors?

Plowing is required for force main installation to expedite installation and minimize impact to Park operations and wildlife.
Pipe installation requirements per Details 1&2/C205 are applicable to open trench installation as required for gravity mains. Avoid force main insulation by ensuring minimum 6' cover over all force main pipe. If minimum cover is not possible, insulate above plowed pipe with minimum 2" thickness of overlapping blue board per foot of difference in cover between 6' and installed depth.