Broken Arrow Municipal Authority
Meeting of: 12-05-2017
To: Chairman and Authority Members
From: Utilities Department
Title:
title
Approval of and authorization to accept the proposal from Pencco, Inc. to conduct a 45-day chemical addition pilot program for odor control along the County Line sewer trunk line
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Background:
The 36" diameter concrete cylinder sewer pipe along County Line Road conveys about 90% of the wastewater flow to the Lynn Lane Wastewater Treatment Plant. Several segments of the sewer line were constructed with drop manholes due to changes in elevation. At each drop manhole sewer gases are released as the flow drops down to a lower elevation in the manhole. The sewer gas generated at each drop manhole gets vented to the atmosphere through the corroded concrete manholes and cracks in the pipes. The release of sewer gas primarily Hydrogen Sulfide has become a major concern to the residents in the vicinity of the sewer trunk line and along County Line Road.
A community meeting was held on October 12, 2017 at the Grace Community Church at the corner of 91st and County Line. The purpose of the meeting was to meet with residents and address their concerns pertaining to the sewer odor emanating from the County Road trunk line. In attendance at the meeting were residents, city staff and Vice Mayor Scott Eudey.
At the meeting staff shared the progress being made on the proposed trunk line replacement project at an estimated cost of about $23 million. In the interim to mitigate the generation and release of sewer odor, the possibility of feeding a chemical into the sewer line to minimize the formation and release of sewer gas was discussed. Staff was directed to explore the chemical feed option.
The Utilities Director contacted Pencco, Inc who supplies and manages iron feed systems for odor control at several large cities in Texas, Arizona and California. The Director had worke...
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