Broken Arrow Municipal Authority
Meeting of: 3-6-2018
To: Chairman and Authority Members
From: Utilities Department
Title:
title
Approval of and authorization to accept the proposal from Pencco, Inc., to extend the 45 day chemical feed pilot program for odor control and the monitoring service along the County Line sewer trunk line
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Background:
At the December 5, 2017 meeting, BAMA approved a proposal from Pencco, Inc. to conduct a 45 day chemical addition pilot program for odor control along County Line Road sewer trunk line. This program was initiated as a proactive response to the sewer odor complaints from residents living along County Line Road.
On January 6, 2018, Pencco subsequently mobilized and installed the bulk chemical storage tank and chemical feed pumps at the 209th lift station located along 71st St. E. Two odor loggers were also installed in the manholes along the trunk line; one at New Orleans St & 193rd Ave., the second unit at 8511 S. 9th St. As part of their scope of work, Pencco staff closely monitored and adjusted the chemical feed rate to optimize the chemical dosage according to the Hydrogen Sulfide levels recorded in vapor form and H2S reduction at the two manhole structures. All data recorded is transmitted and monitored using cloud storage. Staff has been granted access to log on and observe in real time the H2S levels at the two locations and the chemical feed rate. A third odor logger was installed at staff's request at Washington St. & 193rd Ave. and currently does not have the remote data transmitting capability. The correct type of odor logger is on order and Pencco shall install it as it becomes available.
In reviewing the data collected from the odor loggers, the chemical addition program has proven to be successful. The specially formulated chemical has reduced the vapor level of sulfide recorded from as high as 62 parts per million (ppm) to an ...
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