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up to three (3) different membrane element manufacturer's, and evaluate the membrane <br />system with respect to recovery, array, and other operating parameters that are warranted <br />to improve operating efficiency and lower operating pressures. Consultant will review <br />impacts on concentrate water quality and quantity as it relates to the Osprey Marsh IW <br />Facility Permit. <br />Consultant will review replacement of existing end suction style pumps in kind, and <br />replacement with vertical turbine can -style pumps. Review of pump replacement will <br />identify advantages/disadvantages with alternate pump styles, and outline impacts <br />associated with pump changeout. <br />Consultant will develop a phasing plan for these improvements and how these elements <br />can be constructed with minimal impact to operations. Consultant will review base bid <br />and additive alternate bid options for each of the major items and prepare design <br />documents to include these options. <br />Consultant will prepare a list of suggested manufacturers to be included in the project for <br />each of the systems and components listed herein. <br />Consultant will evaluate the impacts (electrical, pipe sizes, equipment layout) of <br />increasing the high service pump capacities to meet peak hour flows in lieu of their <br />existing capacity to provide only maximum daily flows. No design documents will be <br />prepared for any upgrade in size. <br />Task 2 — Preparation of Design Documents <br />Consultant will prepare a basis of design report (BODR) summarizing the design <br />elements and proposed standards for the design components. The BODR will be used to <br />establish design criteria for the final design. Consultant will submit draft BODR for <br />Owner review, and Consultant will attend review meeting to discuss comments. <br />consultant will prepare and submit six (6) copies of the draft BODR, and submit six (6) <br />copies of an updated final version of the BODR. <br />Consultant will prepare drawings and specifications for the above listed items, consisting <br />of the following system components: <br />Consultant will prepare design drawings for feedwater piping modifications. The <br />existing feedwater piping is manifolded within the feedwater pump room. Modifications <br />to the feedwater piping will dedicate one (1) feedwater pump to one (1) RO train, with a <br />backup feedwater pump and piping to each of the four (4) dedicated feedwater pipes. <br />The backup pump will have motor actuated valves to supply each of the four (4) RO <br />trains when a pump is taken offline for maintenance. Consultant will size the feedwater <br />piping to accommodate potential future increase in RO train capacity from 1.8 MGD to <br />2.0 MGD permeate production at 80% recovery. <br />Consultant will design upgrades to the existing soft start/stops for three of the existing <br />FAUtilities\UTILITY - Engineering\WATER\WTP - South RO\19-1115 South RO Water Treatment Plant <br />Improvements\Admin\Oslo WTP Water Plant Improvements 11.25.19.docx <br />Page 2 of 9 <br />