Table 2. Water Supply Facilities 3
Table 3. Sewage Disposal Facilities 4
Table 4. Plumbing 4
Table 5. Project Participant List 4
Table 6. Cost of Facilities Installed 6
Appendix A Engineering Report
Appendix B Memorandum of Agreement
Appendix C Right-of-Way Documents
Appendix D Transfer Agreement
COMMUNITY WATER SUPPLY AND WASTE DISPOSAL FACILITIES
Tachee – Blue Gap, Phase I
Tachee – Blue Gap Chapter, Navajo Nation
Apache County, Arizona
Indian Health Service
Public Law 86-121
Under Public Law 86-121 Project NA-97-L77, the Navajo Area Indian Health Service (IHS), Office of Environmental Health and Engineering (OEHE) spent $822,069 to provide community water service and individual waste disposal facilities to 62 homes at Tachee – Blue Gap, Arizona. This document reports project history, the facilities installed, construction experience, project costs, and details relating to training, rights-of-way, and transfer.
Tachee-Blue Gap community is located in northeastern Arizona within the Navajo Nation. The project area is located 30 miles west of Chinle, Arizona on Bureau of Indian Affairs (BIA) Highway Rt. 4.
On October 28, 1994 the Tachee-Blue Gap Chapter of the Navajo Nation submitted a project proposal to the IHS requesting assistance in providing sanitation facilities under P.L. 86-121 to
serve 73 existing homes. The IHS, OEHE, developed a Project Summary which recommended that the Burnt Corn Valley Water System be extended and that community water service and individual waste disposal facilities be installed to serve 62 homes.
The Project Summary was approved in February 1997 and assigned project number NA-97-L77. A Memorandum of Agreement (MOA) between the Navajo Nation; the IHS; the Navajo Engineering and Construction Authority (NECA), an enterprise of the Navajo Nation; the Navajo Tribal Utility Authority (NTUA), an enterprise of the Navajo Nation; and the Environmental Protection Agency (EPA) was executed on August 6, 1997. This Agreement stipulated the provisions of the project, including areas of responsibility, types of facilities, and method of construction (see MOA Appendix). On June 29, 1998 a letter serving as Amendment No. 1 to the Memorandum of Agreement was executed to decrease the not-to-exceed level from $1,162,000 to $1,037,000 for the completion of sanitation facilities construction. Construction of Project NA-97-L77 started in June 1998 and was completed by December 1998. Table 1 is a chronology of significant documents and events pertaining to Project NA-97-L77.
Table 1. Chronology of Events
Project Proposal October 1994
Planning Agreement August 1996
Project Summary February 1997
Memorandum of Agreement August 1997
Amendment No. 1 June 1998
Started June 1988
Completed December 1998
Transfer Agreement March 2000
Final Report January 2003
SUMMARY OF FACILITIES INSTALLED
The NECA constructed the facilities for this project, excluding the interior plumbing. The IHS made a contribution to the NECA to cover their nonprofit project costs. The IHS also provided engineering services and construction materials. The IHS provided the materials and labor for the installation of the interior plumbing. Bathroom additions were constructed by the Tachee-Blue Gap Chapter for homes requiring additions. Facilities installed under project NA-97-L77 include 54,690 feet of 6-inch, 17,008 feet of 4-inch, and 18,720 feet of 2-inch water main with all necessary appurtenances such as gate valves, flush valves, air release valves, and wash and road crossing material. Individual one-inch water service connections were made to all 62 homes. All homes required individual pressure reducing valves. On-site wastewater disposal facilities for all homes consisted of a 1,000-gallon septic tank and drainfield. Tables 2, 3, and 4 summarize the facilities installed under Project NA-97-L77.
Table 2. Water Supply Facilities
No. of Population* Homes
Type of Facility Units Served Served
6-inch PVC Pipe 54,690 Ft. 310 62
4-inch PVC Pipe 17,008 Ft. 310 62
2-inch PVC Pipe 18,720 Ft. 310 62
6-inch Gate Valve, CI 57 Ea. 310 62
4-inch Gate Valve, CI 22 Ea. 310 62
2-inch Gate Valve, CI 32 Ea. 310 62
2-inch Flush Valve assembly 26 Ea. 310 62
1-inch ARV 10 Ea. 310 62
5/8-inch x ¾-inch Meters 62 Ea. 310 62
1-inch PE House Services 62 Ea. 310 62
* Population is estimated at five persons per home.
Table 3. Sewage Disposal Facilities
No. of Population* Homes
Type of Facility Units Served Served
Septic Tank and Drainfield 59 Ea. 295 59
Project NA-97-L77 costs totaled $822,069. The average cost per home for this project was $13,259. The Environmental Protection Agency (EPA) contributed $329,000 to the project. Table 6 details Project NA-97-L77 costs.
Table 6. Cost of Facilities Installed
Item Description Total
Construction and Materials $675,026
Support Services 139,481
Miscellaneous 7,562 TOTAL PROJECT COST $822,069
** Plumbing R = Rough-in K = Kitchen Sink W = Water Closet
L = Lavatory B = Bathtub WH = Water Closet
Construction was completed without complications.
OPERATION, MAINTENANCE, AND TRAINING
The IHS, OEHE, offered training to the homeowner, emphasizing the proper use and maintenance of on-premise facilities and giving attention to the health benefits which result from the proper use of these facilities. The responsibility to operate and maintain the community facilities constructed under this project rests with the NTUA. The NTUA personnel involved in operation and maintenance of these facilities received initial training from the IHS and have the opportunity to participate in the IHS on-going training for water and sewer systems operation and maintenance.
The IHS obtained right-of-way and archaeological clearance for all facilities constructed under this project. Copies of right-of-way documents including grants-of-easement and affidavits-of-completion are included in the Right-of-Way Appendix in this report.
TRANSFER OF OWNERSHIP
The community facilities were transferred to the Navajo Nation on May 30, 2000. The individual facilities were transferred to the individual homeowners at the same time.
This Final Report was prepared by Rosalyn Roanhorse, Technical Writer, TSS, DSFC, OEHE, NAIHS, using information in the project files and a draft narrative prepared by Robert Morgan, Project Manager, OEHE, Many Farms Field Office.