Attachment 7: GRTE - Water Sewer Design Report

GRTE – 4 LAZY F RANCH

CABINS

Permit to Construct Application
Engineering Design Report
-

Prepared by:
Morrison-Maierle

CERTIFICATE OF ENGINEER

State of Wyoming
County of Teton

)
) ss
)

I, Celine Saucier, do hereby certify that
this report was prepared by me,
or under my direct supervision.

Bozeman Office
2880 Technology Blvd West
Bozeman, MT 59718

1|Page

4 Lazy F Ranch Cabins

DEQ Permit – Engineer’s Design Report

Appendices
A. Base Flood Elevations and Floodplain Profile from 2D HEC-RAS Modeling B. Lift Station Design and Hydraulic Calculations
C. Water System Model Results and Figures

0|Page

GRAND TETON NATIONAL PARK

REHABILITATE 4 LAZY F RANCH CABINS

ENGINEERING DESIGN REPORT

SYSTEM INFORMATION

Water System Name:
Location:
EPA PWS Number:
Population Served:
Avg Daily Water Demand:
Max Daily Water Demand:
Source Water Type:

GTNP – Moose/Beaver Creek
Moose, Grand Teton National Park, WY 83012
WY5680093
38 x 125 per capita gpd = 4,750 gpd (WY DEQ minimums)
38 x 340 per capita gpd = 12,920 gpd (WY DEQ minimums)
Surface water

SCOPE AND PURPOSE

The project will rehabilitate multiple buildings at the former “4 Lazy F” Ranch (4LF) to allow for adaptive reuse of the historic structures as seasonal housing, addressing the park’s housing shortage. It will preserve and rehabilitate sleeping cabins, the main lodge, a garage, and outbuildings to provide living quarters, site improvements and utility upgrades for seasonal employees.
The subject property is currently not in use. The existing onsite well and septic facilities will be abandoned and the renovated buildings will be connected to water and sewer mains from Moose, WY. The water and sewer facilities are operated and maintained by the National Parks Service to serve park facilities such as 4LF, and there is sufficient capacity to connect the property with no negative impact to other customers or to treatment and distribution infrastructure.
The property will be occupied during summer months only and will be winterized when not in use. The project will include the installation of a new sanitary sewer collection system, a sewage lift station and force main, and associated equipment and appurtenances between the historic 4LF cabins and the existing sewer treatment facility in Moose, WY. The project also includes the installation of a potable water distribution system for domestic and fire service use connecting to an existing 8-inch water main at the 4LF Site. In summary the project includes the following site improvements to facilitate the construction