Agenda - Public Works Committee - 04/20/2021

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Tim Gladhill, AICP March 4, 2021 Page 2 of 4 make recommendations related to the capabilities of the existing facilities to serve the area north of Trott Brook. Our analysis will assume the existing lift station can serve the Hunt Addition on a temporary basis, as long as flow can be routed to the facility. Scope of Work The tasks anticipated for the study are presented below. The anticipated duration of each primary task is included next to the task title. Existing Conditions Analysis Gather Data and Compile Working Drawing: We will gather existing information, including aerial photography, LiDAR contour information, GIS utility information and record drawings, where available. We will compile the information into a working drawing. Fees associated with this task are estimated at $2,220. Field Survey: Based on the working drawing, we anticipate some field survey will be required along the creek. We are estimating 1.5 days of field survey, including establishing control and inserting the data into the working drawing. Fees associated with this task are estimated at $2,240. Existing Sanitary Sewer Flows: To understand the existing sanitary sewer flows in the area, we will request the lift station pumping records for the past several years. We will work with Public Works staff to gather the pumping records. We will also review the existing developed areas which flow to the lift station to gain a further understanding of flows per residence in the area. Fees associated with this task are estimated at $1,740. Flow Projections and System Requirements Developable Acreage/Projected Flows: We will review the undeveloped parcels which could potentially flow to Variolite Street, both north and south of Trott Brook. We will then develop estimates for average daily flow and peak flow for the service area. Fees associated with this task are estimated at $3,330. Pipe Capacity Requirements: Based on the projected flow estimates, we will develop pipe capacity requirements at several locations throughout the service area. Fees associated with this task are estimated at $630. Roadway and Water System Requirements Roadway: We will review the roadway needs for the area. This will include a review of Nowthen Boulevard and the potential cul-de-sac if the Hunt Addition develops prior to the Makowsky Addition. Fees associated with this task are estimated at $630. Water System: We will review the City's Comprehensive plan to determine water system improvements required for the development(s). Fees associated with this task are estimated at $830. E3crltrrrr & M r k. 15 an fy unity i pLoyer.