Koyukuk Septic

Project Detailsx

Client: ANTHC

Location: Koyukuk, AK

Year Completed: 2021

Servicesx

> Planning & Design
> Geotechnical Services
> Surveying
> Construction Administration
> Material Testing

Project Overview x

HDL Engineering has been working closely with the Alaska Native Tribal Health Consortium (ANTHC) and the Koyukuk Tribal Council to provide onsite well and septic systems to unserved homes in the community. The Koyukuk septic project has been divided into three phases, with HDL Engineering taking on the second and third phases of the project.

During Phase II of the project, HDL Engineering inspected 47 homes in the community to determine which were eligible for service based on funding requirements. Only 20 homes were deemed eligible, and HDL Engineering designed water and sewer systems for nine of these homes. Four homes required a Septic Tank Effluent System (STEP) with an elevated mound drain field, while the remaining five homes required conventional septic systems. This phase of the project was constructed in the summer of 2022.

In 2021, HDL Engineering began working on Phase III of the Koyukuk Wells, Plumbing, and Septic Project. This phase of the project involved designing water and sewer systems for eleven homes in the community. Nine of these homes required a STEP system with an elevated mound drain field, while the remaining two required conventional septic systems. The project was constructed in the summer of 2022.

HDL Engineering’s involvement in the Koyukuk septic project has been essential in providing onsite well and septic systems to homes that were previously unserved. The project has been completed in phases due to funding requirements, with HDL Engineering taking on the design and construction of the water and sewer systems for eligible homes. The project has faced several challenges, including inspections of homes and differing site conditions. However, HDL Engineering’s expertise and collaboration with ANTHC and the Koyukuk Tribal Council have enabled the project to move forward, providing essential infrastructure to the community.