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EXHIBIT # 1 <br /> Work Order Number 3 <br /> Finish Water Stabilization Implementation <br /> At Water Plants <br /> PROJECT UNDERSTANDING <br /> Kimley- Horn and Associates, Inc . completed a finish water stabilization study that recommended <br /> implementation of a chemical feed system utilizing lime slurry and carbon dioxide to improve the <br /> stability of the finish water . <br /> The following scope consists of pilot testing, design , permitting, construction , and startup <br /> services for finish water stabilization using lime slurry and carbon dioxide feed systems for both <br /> the North Hobart and South Oslo Rd water treatment plants . <br /> SCOPE OF WORK <br /> TASK 1 — PILOT TESTING <br /> Jar testing and pilot testing is recommended to validate the assumptions provided in the report, <br /> and define the optimum mixing technique needed to maximize chemical dosage of lime and <br /> carbon dioxide and minimize turbidity of the stabilized water stream . <br /> Task 1 . 1 Coordination <br /> Consultant will coordinate jar testing of existing product water from each water treatment plant <br /> ( WTP) to be tested by Cal�Flo/ Burnett Lime Company . This testing will be conducted to <br /> determine desired range of lime and carbon dioxide (CO2 ) feed rates that can be used for sizing <br /> pilot unit . Equipment to be used for pilot testing consists of lime feed system ( slurry provided by <br /> Cal�Flo), carbon dioxide (CO2) tank and feed equipment (Praxair, or equal), and a mixer, which <br /> will be furnished by Cal�Flo ' s trailer mounted pilot unit. <br /> Consultant will provide coordination of pilot testing using Cal� Flo ' s trailer scale pilot unit and a <br /> fabricated pilot unit . Consultant will coordinate water supply , disposal , electrical supply , and <br /> siting of a pilot unit near the clearwell of each WTP. Consultant will coordinate arrangements for <br /> pilot testing of Cal�Flo ' s pilot unit furnished by Burnett Lime Company and water plant <br /> operations staff at the North Hobart WTP and South Oslo Rd WTP. <br /> Consultant will coordinate fabrication of a small scale pilot unit for testing of a side stream of <br /> water from the existing clearwell at the South WTP. Fabrication of supply piping and discharge <br /> piping, electrical connections, including furnishing equipment and material will be performed by <br /> IRCU maintenance staff. A drawing depicting the details of the pilot test unit will be prepared by <br /> Consultant for IRCU staff to fabricate . <br /> K :\WPB_Civil\044572022 - IRCU Stabilization\Scope\Finish Water Stabilization Scope - IRCU, tinal .docx Page I of 7 <br />