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03-07-1990 - Workshop .I ill ".." ...." CITY COUNCIL OF EDGEWATER WORKSHOP MARCH 7, 1990 MINUTES Vice Mayor Russell Gold called the Workshop to order at 7:04 p.m. in the Community Center. He stated the purpose was for an update of the stormwater master plan. ROll CAll Mayor David Mitchum Councilman Dan Hatfield Councilmember Gigi Bennington Councilman Russell Gold Councilman Thomas Fish City Attorney Jose' Alvarez City Manager Elly Johnson City Clerk Susan Wadsworth Chief Lawrence Schumaker Excused Present Excused Present Present Excused Present Present Present Vice Mayor Gold recessed the workshop at 7:05 p.m. to await the arrival of the City's consulting engineers. The engineers arrived at 7:09 p.m. Vice Mayor Gold called the workshop back to order at 7:10 p.m. Mr. Ron Ferland, Project Manager, Dyer, Riddle, Mills & Precourt, Inc., apologized for being late, explaining there was an accident on 1-4 that caused the delay. He introduced Mr. Bill Musser who is in charge of the stormwater master plan and drainage sewers. Mr. Musser introduced three other members of their firm who were present. Mr. Musser stated the scope of their work is to identify flooding problems and causes throughout the City, present options to remedy the problems, establish a master drainage basin boundary, provide guidelines for future development, and propose design criteria for future development. He said they're seeking a drainage conceptual permit from St. Johns. He showed a map of the high and low points in the City, explaining the coded colors, and a map showing current drainage basins. Mr. Musser stated there's static flooding which occurs because the water isn't moving and dynamic flooding is problems with water in motion. He noted two sources go to the Indian River, one being the 18th Street canal. He displayed a map with the different drainage soils, pointing out Florida Shores and the Turnbull area have poor soils. He showed where the soil borings were taken about a year ago. He explained static flooding is the most immediate and easily remedied. He pointed out culverts were installed in a haphazard manner over the years and the obvious solution is to lower the culverts. Mr. Musser said some problems are with the canal itself where it wasn't graded correctly when dug and it holds back water all the time. He added when there's a hurricane, they have a tidal surge and water cannot flow because it has nothing to flow to. He showed some ideas for adequately drained canals. He pointed out sediment is a problem and they need to have a settling pit and vegetation is also a problem with water so shallow in most canals it's conducive to aquatic growth and hinders the flow of water. Mr. Musser stated he'd talked with the Public Works personnel about doing some flushing and other things to give them immediate benefit and they've talked with some of the residents of areas where flooding occurred with routine rain events. He added they've inventoried all the structures and canals and ponds that could be contributing to the problem. He stated the maps will be given to Public Works for a complete inventory and each time an improvement is made, they can update it to have a current inventory. Mr. Musser showed on a map where the rainfall gauging stations are located to monitor responses of canals after rainfall. He said they looked at all canals and pipes and some canals can't handle rainwater even from a minor rain event. He pointed out swales will be regraded during the CIP program for Florida Shores. " , "-" ...", Mr. Musser stated locations with immediate problems that now exist are Shangri- La and Wildwood Subdivisions with water close to ground level and at some of the Florida Shores areas from improper swa1e grade. He pointed out it's below typical standards in the State and they have proposed improvements for that. He showed on a map the Wildwood outfall canal, and a check down of one of the can a 1 s wi th a difference between the ends. He showed five cu 1 verts at the railroad track where mosquito dams blocked all but one. He said they feel they can push one through and not disturb what's there and bleed the water down. He showed the pipes on Carol Ann that had sediment in the bottom. He noted they need to dredge out the canal in that area. Mr. Musser stated some options that will provide immediate relief are removing check downs but some of the projects will require hiring a private contractor because the City doesn't have the necessary equipment. He said they need to connect the lake to Wildwood through a ditch that's not existing and it's an agricultural operation now. He showed the Shangri-La outfall area and pipes that would have to be altered to maintain long term solutions,and elevation of the houses and roadway, noting there's no place for the water to go. Mr. Musser stated Pine Bluff and Connecticut had unusual drainage areas and there's a pipe at Snyder that's almost completely blocked by sediment and lays on the bottom of a dry swa1e. He showed a location on Ocean that has standing water due to sediment in the pipe at Snyder. He pointed out that repairing Snyder will give some relief but they have to improve the canal all the way back. Mr. Musser explained in Shangri-La there's little difference between the top and bottom of the road and the cu1 de sac has cracking patterns in the road because the water table's in the base course and it will destroy it. Mr. Musser said a short term solution would be to blow sediment from the pipe at Snyder and then the one at Pine Bluff that's not adequate for all the drainage going into it will have to enlarged and lowered. He pointed out they have about 3 feet in Shangri-La before it will be under water in a storm. He added they're proposing an alternate route for Park Avenue to redirect the drainage and they've checked to see what ut il it ies are there as some may need relocated, with a relocated system on Hart to give them better outfall. He said they feel it can be done and costs associated are in the draft. Mr. Musser showed the pipes on 18th Street, noting with major storms they're inadequate and need to be lowered. He added it would be $5,000 to $15,000 to dig these out and lower them. He showed 442 with a DOT right of way, noting they need to replace it but DOT will require them to meet their standards and having traffic rerouted could be about $30,000 but it is a long term solution and will provide the needed protection. Mr. Musser stated some pipes are an adequate size but need to be lowered. He said this is an option and they'11 present a final draft option with costs and establish a master drainage plan for future development which will include trying to regrade canals to minimize flooding and that will be done under the CIP drainage plan. Mr. Musser stated there's a SWIM program set up by the State regarding the Indian River and they have a lot of guidelines about how much water is to be retained and deta i ned to ho 1 d back water. He stated if F 1 or i da Shores doesn I t do something about retrofit it will cause more pollution of the River. He added they're proposing to vacate some of the rights of way for retention. Mr. Musser stated they want to take this draft and present it to St. Johns and have them review it to see what can be approved and the City can then decide what will be feasible for cost. Mr. Johnson asked about the Shangri-La problem. He noted the City has engaged their firm to design Turgot and he understands part of Turgot and the park site will help eliminate some of these problems. Mr. Musser replied they're looking at all three goals in one design. 2 Council Workshop Minutes March 7, 1990 " ~ , i' '-' -....11 , Mr. Johnson asked how they could alleviate some of the problems of Wildwood and Shangri-La as soon as possible. Mr. Musser replied they think they can do some of the areas without any permitting and can get with Carl Overstreet as a lot of the solutions are relatively inexpensive. Mr. Johnson stated they'll have to get permission from Mosquito Control on the check dam. Mr. Musser noted they had preliminary discussions with Mosquito Control and they had no objections and St. Johns River representatives felt it was positive rather than negative and that they could probably work with it. Councilman Fish stated he didn't have a chance to read this and was disappointed with the timing as they got it Monday night. Councilman Hatfield asked when they'll go from the rough draft to permanent. Mr. Musser replied it will be about two weeks. Mr. Ferland suggested they get the final report to them and give them enough time to review it and perhaps have it for the second meeting in April. Councilman Fish stated they can decide if they want it at a regular or special meeting. Councilman Gold agreed April will be a good time. Mr. Ferland stated they'll focus their next presentation on solutions and costs associated with those solutions. Councilman Fish moved they adjourn. Councilman Hatfield seconded the motion. Workshop adjourned at 8:05 p.m. Minutes submitted by: Lura Sue Koser ATTEST: .:-:..: './ .,:{. /:J--c.-.- J' 1/ ~~<~.;~~~) CITY CLERK Approved this 2nd day of ~tI.k' MAYOR (VICE) 3 Council Workshop Minutes March 7, 1990