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EXHIBIT #A <br />South Oslo Rd Water Treatment Plant Improvements <br />Amendment No. 1 to Work Order No. 1 <br />PROJECT UNDERSTANDING <br />Kimley-Horn and Associates, Inc. was authorized under Work Order #1 to provide design, <br />permitting, and bidding phase services on December, 17, 2019. Following completion of <br />task 1 of this scope including the preliminary evaluation, the following additional items <br />were determined to be necessary improvements as part of the overall project; <br />• New high service pumps (HSP) 4 & 5 (2 - 3 dwgs) <br />• Reverse Osmosis (RO) permeate and concentrate lines (4 dwgs) <br />• HSP Suction and tank outlet piping (4 dwgs) <br />• Additional CO2 storage and feed system (3 dwgs) <br />• Additional Sulfuric Acid pump skid (1 dwg) <br />• Additional bulk caustic tank in existing containment (2 dwgs) <br />• Uprating of the WTP from 8.57 to 9.0 MGD treatment capacity <br />• Modification to existing Demineralization Concentrate (DC) disposal permit <br />• Separation of SCADA & PLC Improvements to standalone project <br />SCOPE OF SERVICES <br />Consultant will provide design, permitting, and bidding phase services for the <br />improvements listed herein. <br />Task 1 — Preliminary Design — No Changes <br />Task 2 — Prepare Documents — Additional Scope <br />Consultant will prepare design drawings and specifications for two additional high service <br />pumps, including supply and discharge piping as outlined in the preliminary design report <br />and 60% submittal. The design will consist of two new vertical turbine pumps located <br />outdoors of the existing building due to limited indoor space. The pumps will be designed <br />to match the existing pump performance and include variable frequency drives (VFDs) on <br />each of the pumps. The design will also consist of redundant suction and discharge piping <br />and incorporate dual distribution flow meters as described in the previous scope of <br />services. <br />Consultant will prepare design drawings for a new dual permeate pipe and replacement <br />concentrate pipeline. The dual permeate pipe will allow phasing of the RO train <br />installation and provide additional hydraulic capacity to the RO system to provide 9.0 <br />MGD. The additional concentrate line is necessary as a replacement to the existing <br />fiberglass reinforced plastic (FRP) pipe concentrate line that is susceptible to failures. <br />Both pipelines will be <br />F:\Utilities\UTILITY - Engineering\WATER\WTP - South RO\19-1115 South RO Water Treatment Plant <br />Improvements\Admin\Revl DRAFT Oslo WTP Additional Scope .docx <br />Page 1 of 6 <br />