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Item 6 - Work SessionRoyal Oaks Ct and Creekside Dr Sanitary Sewer and Road Reconstruction City Council Presentaion Work Session April 6, 2010 Proposed Alignment of Sanitary Sewer Proposed Construction Activities 8,000 lf of sanitary sewer - Heatherwood, Royal Oaks Addition, Twin Creeks Addition, and East Dove Road Pavement reconstruction of all 4 neighborhood streets and East Dove Road from Lonesome Dove Road to Kimball Ave. 5,000 lf of 12 inch water line along East Dove Road from Lonesome Dove Road to Kimball Avenue Various drainage improvements along East Dove Road and within the neighborhoods Total Project Cost - $3,208,230.00 Proposed Construction Activities Creekside Drive Area 2,800 lf of sanitary sewer - 28 residential properties along Royal Oaks Court and Creekside Drive Proposed Sewer Lift Station at 1655 Creekside Drive 1,000 lf of sanitary sewer - 14 residential / commercial properties along East Dove Road Creekside Pavement Quality Index = 4.0 Pavement reconstruction and associated drainage improvements on Creekside Drive proposed Alternative Solutions Considered Relocating lift station – proposed location is natural low point Incineration of waste – viable technology used mainly for low use or low flow fixtures such as parks Vacuum (negative pressure) system – a wet well storage facility that is monitored is still required Individual lot grinder pumps – monitoring still required for public structures which would need a 20 – 25’ antenna close to residents home Deep sewer construction Lift Station not constructed on Creekside Drive Relocating the proposed lift station on Torian Lane (east of Creekside Drive) Alternative Solutions Considered Impacts of Deep Sewer Construction A hole greater than 30’ would be dug on Heather Lane – access during construction to cul de sac properties would be hindered/difficult to maintain due to size of hole If a “belly” or sag in the line is determine to exist, then the line would have to be dug up and repaired. This could cause the contractor to dig up in the resident’s yard near foundations depending on location of repair Adequate grades may not be able to be obtained without open cutting area Long-term maintenance issues Alternative Solutions Considered Impacts of Deep Sewer Construction (Cont’d) Construction of deep sewer requires a larger and deeper hole dug down to the main in each resident’s yard to make point connection Impacts of Deep Sewer Construction Impacts of Deep Sewer Construction Alternative Solutions Considered Proposed Lift Station Site Alternative Solutions Considered Looking North to “Torian Lane” Alternative Solutions Considered Drainage channels (ditches) at end of gravel road Downstream drainage improvements would be required Alternative Solutions Considered Torian Lane Option Significant Issues Roadway and drainage improvements would be required Potential downstream drainage improvements would be required – Outfall? Roadway would be constructed to city standards Additional design required Due to grades lift station would need to be deeper Additional easements required - Creekside to Torian Lane Alternative Solutions Considered Torian Lane Option Significant Issues Currently not an existing road – undeveloped area Right of Way (ROW) documents states this area dedicated for street use only Description does not “close”- additional survey required Additional ROW needed 16 properties (8 owners) front Torian Lane (zoned SF1-A) Alternative Solutions Considered Torian Lane Option (cont.) Significant Issues No electricity currently available in the area where the lift station would be located – electrical distribution would be an additional cost Project Delay - Resolution of existing issues would delay construction of sewer to serve the properties along north Royal Oaks, Creekside, and portions of East Dove Road for 12 to 15 months at minimum No funding currently available for this option Approval for funding could be required in future Capital Improvements Programs (CIP) Proposed Lift Station Site Location 1655 Creekside Drive Proposed Lift Station Site Proposed Lift Station Site Location Property Lines Proposed Lift Station Location New 36 inch Concrete Culverts Proposed Lift Station Site Location Area shaded in light blue will be heavily landscaped – grass and bushes Area shaded in pink are the access points into the two structures Area shaded in red is a proposed rock screening wall for the instrumentation Area shaded in green is a retaining wall (< 1 foot) Area shaded in light blue will be heavily landscaped – grass and bushes Area shaded in pink are the access points into the two structures Area shaded in red is a proposed rock screening wall for the instrumentation Area shaded in green is a retaining wall (< 1 foot) CREEKSIDE DRIVE Proposed Landscape Rendering Lift Station Site Some comments received stated no subdivision name is preferred Alternative Solutions Considered No Lift Station constructed on Creekside Approximately 42 properties (39 property owners) affected Current Status Construction of the sewer in these neighborhoods is on hold until a resolution regarding the proposed lift station and location is reached Meeting held on February 15, 2010 for those properties affected by the construction of the lift station (12 property owners in attendance) Current Status (cont.) Packet of information regarding the proposed construction and survey developed based on comments from property owners in attendance – sent March 4, 2010 Survey – Two (2) questions with three (3) options each A total of 39 packets mailed – 33 surveys returned (84.6 %) Responses to Survey Question #1 * 33 Responses Responses to Survey Question #2 * 33 Responses Remove Creekside Lift station/sanitary sewer from project Move forward with Torian Lane option Additional $750,000 funding required Delay of 12-15 months Delay of Creekside & Royal Oaks street reconstruction Move forward with project as designed/planned Options Questions? Proposed Construction Activities Creekside Drive Area Estimated Sewer Project Cost – $600,000 (does not include drainage or roadway improvements) Sunk Costs - $8,300 A total of $5,000 paid to property owners for ROW to date One property owner given credit of $1,300 for easement in 2002 Additional ROW purchased at 1655 Creekside for the lift station site - $2,000 Proposed Lift Station Site Location