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� c) Storm Sewer Lateral Facilities � <br />A network of pipes ranging in size generally from 12 inches to 27 <br />inches designed to collect storm runoff from a specified small <br />area to a trunk facility. The lateral facilities also include <br />street overland flow and inlet structures such as catch basins, <br />manholes and flared end sections. <br />d) Storm Sewer Taxin� District <br />A drainage area determined by using topographical maps and surveys <br />that mutually benefit from storm sewer improvements in conformance <br />with Minnesota Statute Section 444. <br />e} Watershed District <br />A formally established area and Board which protects and controls <br />• the water management aspects of subdivisions and developments <br />within the region. <br />2. Determining Storm Sewer Assessment Rates <br />. • <br />d) Storm Sewer Trunk Rates <br />1. �esign andestimate the total improvement cost of the <br />ultimate trunk system needed to provide complete service to <br />each property in the Service District considered. Also, <br />include the total cost of any existing facilities and/or <br />previous storm sewer assessments to be credited. <br />2. Determine the base assessment rate by dividing the ultimate <br />system cost described above by the-sum total of the <br />following: <br />a, Gross area of low density residential properties times <br />1.0. <br />25 <br />