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Home My WebLink About9.C.1. Consideration of Drainage Solution for Valley Creek Crossing Block General Business 9. C. l. `it t,16C(.)1'�;}; TO: Mayor and City Council Mark McNeill, City Administrator FROM: Bruce Loney,Public Works Director DATE: OS/07/2013 SUBJECT: Consideration of Drainage Solution for Valley Creek Crossing Block 3 (E) � Action Sought For City Council to approve a drainage solution for Valley Creek Crossing Block 3 and approve a cost participation letter agreement between the City and the property owners. Background On August 21,2012 residents from Valley Creek Crossing Block 3 approached the City Council on a drainage issue in the neighborhood. Council directed staff to study the issue and bring forward this item at a future meeting. Valley Creek Crossing is a recent subdivision located west of CR 17 and north of CR 78. Residents along the south side of Evergreen Lane from Autumn Hill Park to Halli Road have been experiencing high ground water table on their lots which affect their turf areas on their properties and cause their sump pumps to run continuously. At the August 2�t, 2012 City Council meeting, homeowners dropped off information on their concern, pictures of the areas with high ground water impacts, and with preliminary costs on a drain tile system to correct the problem. Staff's review of this area shows that there is an existing drain tile system with a storm sewer catch basin along Evergreen Lane.To correct the high ground water table and intercept the ground water into the storm sewer system, extension of drain tile will be needed to intercept the water in order to stabilize the ground and protect property. Staff also did investigate the area around 1990 and 1988 Evergreen Lane lots and there are drainage problems that affect the city sidewalk. In discussing this issue with Tom Scott who resides at 1998 Evergreen Lane, the residents would like to have their contractor perfonn the work which would include the installation of perforated drain tile and all restoration. Staff has checked with our City Attorney on the city participating with a private contractor that is hired by the residents and this is something that could be done. The concept of a drainage solution would be for staff to approve of a drainage plan,then also allow a right-of-way permit for the connection of the drain tile system into the City's storm sewer system at no cost and provide inspection of the drain system. Staff also would recommend that the City would participate, due to the fact that we would receive benefit to our sidewalk and reduce liability and to the fact that we have participated in other drain tile installations to correct drainage issues that affect residents such as in the Westchester subdivision. Attached is a drawing showing the design of a drain tile system that would correct the problems in this area. Curbside Landscape and Irrigation has done the design with staff input and the estimated cost is $10,652.00. Staff would recommend that the City would participate 50%of Area B.This funding would come out of the Storm Drainage Fund and at a cost not to exceed$5,326.00• The residents will be present at the council meeting to discuss this item. Recommendation Approve a motion authorizing a drainage solution concept proposed by staff and authorizing staff to enter into a letter agreement with the property owners to participate in the project at a cost not to exceed$5,326.00 from the Surface Drainage Fund.This design would benefit the City by correcting a city sidewalk liability and would correct a drainage problem in this block of Valley Creek Crossing Block 3. Budget Impact Participation in this drainage solution would come from the Surface Drainage Fund and there are sufficient funds available. Relationship to Vision This supports Goal E: "Deliver effective and efficient public services by a staff of well-trained,caring, and professional employees". Requested Action Approve a motion authorizing a drainage solution concept proposed by staff and authorizing staff to enter into a letter agreement with the property owners to participate in the project at a cost not to exceed$5,326.00 from the Surface Drainage Fund. Attachments: PROPOSAL &DRAWING (`�� 12450 Zinran Ave • �� .�� Savage,MN 55378 . ` .( � �� j � � ��``j� (952)403=9012 Office �� , � � � � (952)403 9282 Fax , BBB � � - � • • www.curbsidelandscape.com ',� 25-Apr-13 City of Shakopee (Bruce Loney&Joe Swentek) Tom Scott& Evergreen Lane Homeowners Shakopee, MN Evergreen Lane Drainage Proposal 5.0 AREA B per plan provided Drainaqe Svstem Set up materials handling location (coordinate with Jim Henderson) Excavate trench for drainage system Minimum trench dimensions: 24"wide 28"deep (or more to allow for proper pipe pitch) Hand dig as needed around utilities and under sidewalk 45 cu yds Haul away and dispose of excavation 2080 sq ft Wrap trench with filter fabric fabric to wrap bottom, sides and top of gravel 260 ft Install drainage pipe 6"corrugated plastic drain tile, perforated Install all necessary fittings 6"90 degree elbows (2) 6"Tees (3) Install area drains per plan 8" Round Grates, green (3) Install fittings to tie into existing PVC drain tile 6"-4"drain tile reducers (2) Sewer and Drain Adaptors (2) 4" PVC Tees (2) 40 ton Install drainage rock around pipe 3/4" clear rock 24"x24" along pipe 6 cu yds Install topsoil to fill trench to grade, 4" minimum Equipment Deliver of materials Drainage System $8,697.00 Sidewalk Repair Tear out 2 panels of existing sidewalk to allow for drain tile installation Prep for new concrete Install 2 new concrete panels Deliver of materials Sidewalk Repair $1,110.00 Turf Repair 65 sq yds Install sod to re air dama es from installation Turf Repair $845.00 ' AREA B TOTAL $10,652.00 NOTES: Bid does not include any irrigation repairs While design allows for sump pump connections, bid does not include connections Private sump pump line connections are to be contracted seperately _ � �_� 3 ��r . f �- � � � . � i � �;. - "- -_ � ; � - - _ _ _—,.L�— „ , ��CY2`Rff�:fykM . .�, —�_. �. 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