Clarksville Light & Water Source Improvements

Clarksville Light & Water Mitigation

The Clarksville Light & Water Mitigation project consisted of three separate phases, and occurred in multiple locations along Piney Bay and Spadra Creek near Clarksville. The overall goal of the project was installing new intakes on Spadra Creek and Piney Bay in order to preserve the integrity of the city’s water supply and ensure clean water sources in the future. Van Horn Construction served in a CMAR role for the duration of this project. VHC had no recordable accidents during this project, which occurred during the period in which the company earned ABC’s Diamond STEP Award. This project also received an Excellence in Construction Award for Public Works/Environment.

 

Project Origin

Upon receiving information that Diamond Pipeline planned to install a new crude oil pipeline that would cross existing water intakes on Piney Bay and Spadra Creek, CL&W began efforts to preserve the integrity of its water source. CL&W expressed concern that the placement of the crude pipeline could compromise a water source that currently provides water for more than 28,000 residential and commercial customers in Clarksville and the surrounding area. Diamond Pipeline agreed to provide funding for CLW to secure a clean water source through the installation of new water intakes on Spadra Creek and Piney Bay. The new intake would also require a new road, pump station, and transmission line on Spadra Creek, and improvements to an existing pump station on Piney Bay.
Van Horn Construction’s former project experience with CL&W granted them insight to the Owner’s goals and needs, and Van Horn Construction was selected as Construction Manager at Risk (CMAR) for the project.CL&W selected Olsson (Formerly McGoodwin Williams & Yates) as the engineering firm.

 

Project Overview

Phase I

Construction began in March of 2016 with tree removal and site preparation for a new road on Spadra Creek that would provide access to CL&W’s new pump station on Spadra Creek. VHC operated under a limited time window for tree removal due to environmental accommodations to protect the habitats of bat and beetle species in the area. VHC worked closely with representatives from CL&W and other subject matter experts to perform proper tree removal. After tree removal, VHC began road construction to prepare the site for installation of the new intake, intake facility, and transmission line.

Phase II

In Phase II, the team installed a new freshwater intake screen at the existing intake on Piney Bay, as well as constructed a new intake, weir structure, and intake facility at Spadra Creek. The new intake facility on Spadra Creek is located upstream of an existing intake. This placement occurred because CL&W desired to collect water upstream of the new crude oil pipeline being installed by Diamond Pipeline. An upstream water collection allows CL&W to maintain a clean water source should the crude oil pipeline ever be compromised.

Phase III

The third phase of the project was performed concurrently with Phase II. This phase of the project consisted of the construction of approximately 7,420 linear feet of 24-inch ductile iron raw water pipeline to be used to transmit raw water collected on Spadra Creek. VHC connected the new transmission line to an existing 24-inch ductile iron pipeline near the existing Spadra Creek Intake Facility and extended it to the new Spadra Creek Intake Facility. The reach the targeted location, the new transmission line crossed two creeks. The line consists of approximately 480 linear feet of 36-inch steel casing and a combination of air release/vacuum valve assemblies.

Architectural Experience

Industrial Experience

INDUSTRIAL MANUFACTURING

MUNICIPAL

WASTEWATER

WATER