Agenda - Council - 06/09/2015 - Laserfiche WebLink

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Assessments Policy, the cost to correct unsuitable subgrade soils is not an eligible special assessment cost so these costs will be paid in full with City funds. Subgrade corrections can carry significant costs but in this instance staff believes the cost is justified as it will ensure the City will receive the maximum life from the reconstructed street while minimizing maintenance costs over the life of the street. Both streets are proposed to be reconstructed to match the existing widths of 31 -feet from back -of -curb to back -of -curb. However, concrete curb and gutter is proposed along both streets to better facilitate drainage and to protect the edges of the new pavement. Storm sewer is also proposed to be constructed to better facilitate drainage. The construction of 6 -foot wide concrete sidewalks within City right-of-ways along the east side of Garnet Street and the north side of 168th Avenue is also proposed. The new sidewalk will connect the existing 6 -foot concrete sidewalk east of Garnet Street between the dead-end sidewalk stub south of 169th Lane and the existing concrete sidewalk north of 167th Avenue. Since these sidewalks connect to the regional bituminous trail west of CSAH 5, adding the proposed sidewalk will close a significant gap in the existing pedestrian facilities in this developing area. Public utilities are also proposed for several reasons: 1. Extending 8 -inch ductile iron pipe (DIP) watermain under Garnet Street will create a looped (connected) system which benefits the City by allowing the water supply system to be maintained more efficiently. 2. Extending 8 -inch DIP watermain under 168th Avenue will provide a looped water supply system upon connection to the 8 -inch DIP watermain being installed with Brookfield 6th Addition with 168th Avenue. 3. Looped systems also allow smaller areas to be isolated during watermain maintenance operations thereby removing fewer properties from service. 4. The proposed street improvements have a design life of 60 -years and since adjacent properties were developed over 20 years ago their septic systems and wells may begin failing soon prompting requests to connect to City utilities. Therefore, if utilities are not installed with the project the street(s) could need to be reconstructed well before their useful life is over. 5. During the January 29th public information meeting, numerous property owners voiced an interest in connecting to City utilities, either now or in the near future. Staff therefore proposes to construct 8 -inch DIP watermain under both Garnet Street (stubs exist at both ends of the street segment to be reconstructed) and 168th Avenue, with 1" copper water service lines to each property. And 8 -inch PVC trunk gravity sanitary sewer is also proposed, including 4" PVC sewer service lines to each property. Only one set of services is proposed to be installed to each property as there are too many unknowns regarding future lot splits to consider installing additional services at this time. Storm sewer improvements are also proposed along both streets, including replacement of the existing culvert under Garnet Street north of 168 th Avenue, and the existing ditches both sides of Garnet street are proposed to be re -graded. A permit application is pending with the Lower Rum River Watershed Management Organization for their next meeting on June 18th. Public Input On January 29th, a public information meeting was held at City Hall to solicit input on the project from property owners with access to these streets and therefore proposed to be assessed for a portion of the costs. Owners from 7 of the 12 assessable properties attended the meeting and in general were supportive of the project. However, several questions surfaced that staff was not able to fully address at the meeting, but any questions that could not be answered at the meeting were followed up on afterwards by providing additional or updated information via email, by meeting with them at City Hall, or by visiting them at their property to discuss their concerns. No public comment was received at the February 10th Public Hearing. One or two unresolved issues remain which staff will discuss with Council to ensure staff has clear direction moving forward to allow these issues to be resolved before construction starts. Notification: