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HomeMy WebLinkAbout1997 04 28 Consent Item B COMMISSION AGENDA ITEM B REGULAR CONSENT X INFORMATIONAL April 28, 1997 Meeting MGRth) f) fDEPT J~t- Authorization REQUEST: Stormwater Utility Advising the City Commission of the Staff Recommendation that a Control Structure Be Installed on the Dittmer Property to Prevent Future Flooding. PURPOSE: The purpose of this Board item is to bring to the attention of the City Commission the staff recommendation to Walt Dittmer that he install a control structure on his property as a preventative measure to control runoff from his property. CONSIDERATIONS: In August of 1995, a storm event occurred which significantly damaged two homes on Elmwood Drive in the Wildwood subdivision. The source of the flooding in this instance was that a berm along a pond on the Dittmer property was breached to due to an earthen weir being overgrown and filled in. The residents requested that the City research a way to prevent this event from reoccurring. City staff recommended to Mr. Dittmer last year that he construct the originally designed control structure for the retention pond to alleviate the concerns of the Wildwood residents. We have been working with Mr. Dittmer since then to bring this project to fruition. Recently, a concern was expressed to staff that there is some opposition to the installation of the control structure and connection to the City drainage system It is our contention that the system is already "connected" and we are recommending that the earthen weir be replaced with a concrete control structure which will require less maintenance and be more reliable. We are seeking the Commission's concurrence on the staff recommendation. April 28, 1997 Consent Agenda Item --Il Page -2 ISSUE ANALYSIS There is an undeveloped piece ofproperty owned by Walt Dittmer in the northwest comer of the City that is generally bounded on the east by the Wildwood subdivision and on the north by Shepard Road. The property size is approximately 30 acres and the natural drainage is to the southeast, towards the Wildwood subdivision. In 1985, the property was approved by the City to be developed as the Winter Springs Commerce Center. A St. Johns River Water Management District permit was also issued. The SJRWMD permit included a retention pond and control structure on the eastern side of the property immediately adjacent to the Wildwood subdivision. The control structure was proposed to connect to an existing 291X45" elliptical pipe in Meadowbrook Drive which is capable of handling the flow. The drainage system on Meadowbrook Drive is owned and maintained by the City. The only site development work performed on this property in approximately 1988 was the construction of the retention pond including a berm along the Wildwood subdivision and an earthen weir to serve as an overflow. The development approval and SJRWMD permit have subsequently expired. Since 1990, residents on Elmwood Drive have experienced flooding three times including the major event in 1995. In our opinion, if the control structure was properly installed these events could have been averted. The installation of the structure and associated piping will not require a SJR WMD permit, as confirmed by a SJR WMD representative, nor will it require a City permit. However, City approval and a SJRWMD permit will be required when this property is developed. FUNDING: No expenditures are required by the City. .. ~ Apri128, 1997 Consent Agenda Item II Pagel RECOMMENDATION: . It is recommend that the Commission concur with the staff recommendation that Mr. Dittmer install the control structure and associated piping to connect to the Meadowbrook Drive drainage system to reduce the potential for future flooding. IMPLEMENTATION SCHEDULE: If approved, we will continue to work with Mr. Dittmer to get the control structure and piping installed. It will still be a recommendation to Mr. Dittmer, not a requirement. ATTACHMENTS: 1. Sketch of Improvement Area COMMISSION ACTION: /' - - ,40 ~ ~ 0 Attachment No 0 1 0.0 1>-'- o ,. ., .t. ~ WILDWOOD . <'.\ S.q'3 .." J.t-r3~1 I . ._ ,_. ~~:~"'c...:...:.,._... ....,. ""'~<':~,,"':""~' <~~~" ~ GREENSPOINTE --- ./