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2015-055
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Last modified
3/30/2017 8:30:37 AM
Creation date
4/28/2016 10:17:38 AM
Metadata
Fields
Template:
Official Documents
Official Document Type
Work Order
Approved Date
03/10/2015
Control Number
2015-055
Agenda Item Number
8.J.
Entity Name
Kimley-Horn and Associates
Subject
Work Order No.1 Water Distribution System
Water Quality and Corrosion Investigation
Area
North Hobart Water Plant / South Oslo Plant
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TASK 2 — Coordinate Coupon Corrosion Test Rack Installation and Testing <br />Consultant will coordinate installation of up to two (2) coupon test racks at each water <br />plant site, consisting of water supply, sample water disposal, power supply and <br />monitoring. Consultant will prepare a schematic design for the recommended coupon <br />test unit configuration. Indian River County Utilities (IRCU) will fabricate and be the <br />Owners of these racks. Consultant will coordinate with IRCU specific location of the <br />rack installation at two (2) locations; <br />• North Hobart water plant <br />• South Oslo Rd. water plant <br />Consultant will assist IRCU staff in the supervision of the corrosion study and provide <br />limited supervision of operation of copper corrosion testing unit. Water treatment staff <br />will manage the day to day operations, sampling, and data collection from the pilot unit. <br />This proposal assumes that the county laboratories staff will perform the analytical <br />testing associated with temperature, alkalinity, hardness (Ca and Total), chloride, <br />sulfate, copper, free chlorine and pH. This proposal also assumes that IRCU operating <br />staff will add chemicals to their devices as required to maintain pH and water quality <br />targets. Any testing that is not able to be performed by the County laboratory will be <br />performed by an independent testing laboratory retained and paid by the County. <br />This proposal assumes that the coupon testing will be continued over a 4 to 6 month <br />period for each phase of testing, for a total of 8 to 12 months. The program for specific <br />water quality parameters to be tested and their duration will be developed as a part of <br />our work on Task 1. It is assumed that the coupon test unit will be operated and cycled <br />when exposed to free chlorine disinfectant. <br />It is assumed that each water plant site will include two racks; one blank and one with <br />suggested corrosion inhibitor. Each rack will include mild steel, lead, copper, and <br />ductile iron (cement -lined) sets of coupons. One rack, two locations, for remote sites <br />will be utilized and monitored also. <br />Coupon racks will be fabricated by IRCU and coupons provided by American Water <br />Chemicals, Inc. (AWC), or equal. Coupons will be tested by a third party in accordance <br />with ASTM standards and cleaned in accordance with ASTM Gl. It is assumed that <br />coupons will be pulled and tested at 30, 90, and 120 day time frame. The cost of <br />coupon samples will be borne by IRCU. <br />Consultant will attend kick off meeting with staff to discuss installation and monitoring <br />of test racks with IRCU staff. It is assumed that test racks will be delivered to each site <br />and setup and installation will be connected with IRCU staff support. <br />K:\WPB_Civil\General\Miller\Indian River County\Proposals\2015 Coupon Testing IRCU rev3 doc <br />
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