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HomeMy WebLinkAboutRPT 7 STORM DRAIN 10-22-86i~ REPORTS ~, NOo 7 10-22-86 DATE: OCTOBER 14, 1986 Inter-Coza TO: FROM: SUBJECT: WILLIAF! HUSTON, CI~ )tANAGER PUBLIC WORKS DEPART)lENT/ENGINEERING DIVISION INFLUENTIAL SQUARE STORM DRAIN PROBLEMS The attached letter was sent by Florence Megallon, President of the Influential Square Homeowners Association, and outlines her very valid concerns regarding flooding at the southerly end of the Influential Square development. In order to familiarize the City Council with some of the background on this matter, the following information is recapped. 1. Influential Square was developed as condominiums while under the jurisdiction of the County of Orange in 1964. 2. This development was annexed to the City of Tustin in December, 1980. e In 1983, the Influential Square Homeowners Association requested relief to the flooding conditions their development had been experiencing and the City Council budgeted funds to provide for a storm drain to be extended northerly on "B" Street and westerly along Nisson Road to intercept the storm drain system for the freeway which outlets onto the Influential Square development. In 1984, during the design phase of the storm .drain project, it was determined that Caltrans would widen the Santa Ana Freeway in the vicinity of the proposed storm drain construction and would ultimately require the relocation of Nisson Road southerly of its existing location. Additionally, it was discovered that a portion of Nisson Road, where the storm drain was to be located, is still under the control of Caltrans, which would not of allowed the installation of a storm drain facility which would have to be relocated three to four years later at a cost of $100,000 plus. Caltrans was contacted with respect to placing a grate over the inlets of the four storm drain pipes on the northerly side of the freeway (and within Caltrans right of way) to catch any liter/debris from entering the storm drain system. Caltrans declined on ~installing the grates due to possible blocking of the drain systems which could result in flooding upstream of the freeway. Similarly, the City can not place grates on the downstream outlet because an accumulation of debris within the pipe could cause flooding upstream of the freeway. OCTOBER 14, 1986 PAGE TWO Staff has informed Ms. Megallon that we have placed the drain on the southerly end of the Influential Square property on a continuous inspection cycle during storms for the removal of debris at the inlet. Many of the items removed from this drain in the past few years, we feel, originated from the condominium development itself in lieu of the Caltrans drain. Some of the items that have been removed from the drain in past years are: , 1. Empty oil cans 2. Childrens toys 3. Bowling ball 4. Plastic balls of various sizes The City has placed bars over the inlet of this drain to screen out the larger items which have tended to impact this drain in the past. A copy of the August, 1983 staff report on this item is attached for the City Council's information. Suggested actions on this matter are recapped below: 1. Maintain continuous inspection of the drain located at the southerly end of the condominium development during each rainy season. Maintain City committment to complete the westerly storm drain extension along Nisson Road to intercept the freeway drains, once Caltrans has obtained and cleared the right of way for the relocated Nisson Road. Estimated cost for this extension is $88,000.00. endecker ~ Director of Public Works/City Engineer BL:jm 'Attachment Influential Square Homeowners Assn. October 7, 1986 Mayor Donald Saltarelli Rcna ld Hoesterey Richard Edgar Ursula Kennedy John Kelly ~RdDert Ledendeker, City Engineer FROM: Florence Magallon, President Influential Square Homeowners Association ~JBJECT: Influential Square Flooding Problems OCT 10 l SS For the past three years, we have been waiting for the promised relief from our flooding of garages. In 1983, several of our homeowners attended a City Council meeting regarding this matter, and were assured by Mr. Ledendeker that a new drain would be built, was in the 1984-85 budget, and was "first priority". Several homeowners also attended a "redevelopment" meeting and were again assured relief. In March of this year, I called Mr. Ledendeker and was infor .m~d that the city could not fix the drain until plans for the freeway interchange were finalized, and that Nisson Road now belongs to the state; however, the city would place a grate over the opening under the freeway to help catch some of the trash which contributes to the flooding of the garages and the road through our complex. In September, I again called Mr. Ledendeker's office. I left three questions with his secretary: 1) Was the grate installed? 2) On what date did the state obtain Nisson Road? and 3) Who can I call at CalTr~ns? In reply to my questions, Mr. Tim Tucker called me and related that the state would not allow the city to place a grate on the drain opening, but the city would make sure the drain was kept open and free of trash. I then called Mr. Christopher (a CalTrans engineer) and he told me that Nisson Road is a city street and, therefore ~ CalTrans has nothing to de with the street. With the rainy season coming soon, we are again faced with three or four floodings this year. This letter is to put you cn notice that the Influential Square Homeowners Association hereby holds the city responsible for all damages to the structures, the contents of the garages, damage to the cars parked on the road concerned, and any deterioration of the road due to flood damage. Yours truly, Florence Magallon President of the Association 17256-B Nisson Road Tustin, California 92680 Phone: (714) 832-6903 Inter-Corn TO: FROH: SUBJECT: WILLIAM HUSTON, CITY MANAGER BOB LEDENDECKER, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER FLOOD CONTROL FACILITIES - 17212-17288 NISSON ROAD The City received complaints regarding flooding within the Influential Square Condominiums during last winter's storms and more recently lost a court case in small claims court in the amount of $1,500.00 plus court costs. At one of the initial budget review sessions, a request from the condominium residents was presented for the City to solve the flooding problem. This condominium development was built under the County jurisdiction in 1964-65. At that time, the storm drains crossing under the Santa Ana Freeway were collected into a single pipe by the developer of the condominium project and continued along Nisson Rd. to the easterly property line of the condominium development and ultimately outletted on private, property at this )ocatton. The storm flows then flowed southerly down the easterly drive of the condominium project to where it entered a box culvert type 'drainage structure and is outletted to the public street (Corla Street). During the past few years, when our area experienced high intensity storms, the southerly end of the condominium project has experienced some flooding. The subject area came under City Jurisdiction in December, lg80. Staff initially reviewed this area on a preliminary basis and suggested the installation of storm drain running from the intersection of Myrtle Ave. and Medallion Ave. and northerly along Myrtle Ave. to Corla Ave., thence easterly on Corla Ave. to an easement between the residences located at 17271 and 17281Corla Ave., thence northerly.in this easement to the Influential Square Condominium development at an estimated cost of $188,000.00. Further study reveals that an alternate project could be implemented to resolve the flooding problem at Influential Square Condominiums. This alternate is delineated in yellow on the attached plan and i~ estimated to cost $100,300.00. This alternate would be an extension of the storm drain which is to be installed in Mitchell Ave. between Newport Ave. and "B" St. with H.C.D.A. funding at an estimated cost of $54,000.00. It is proposed to extend this drain northerly along "B" St. from Mitchell Ave. to Nisson Road and the6ce westerly along Nisson Road to intercept the pipelines crossing under the freeway adjacent to the Influential Square Condominiums. The interception of the flows from under the freeway will reduce the storm .flow substantially into the condominium development and ultimately reduce the flooding potential at the southerly end of the project. 'FLOOD CONTROL FACILITIES - 17212-17288 NISSON ROAD AUGUST 11, 1983 PAGE TWO This alternative has been reviewed by the Orange County Flood Control District and has received the approval on the conceptual design. It will also provide an acceptable solution to the flooding problem at a saving of $87,300 over the initial solution. It is requested that any excess funding available in the current budget year be utilized in the construction of this drain. In the event the South-Central Redevelopment project area is formally implemented, perhaps this drain could be a priority project with the use of borrowed funds. We will continue to seek other sources of funding to help implement this project. The Mitchell St. drain and the proposed alternate will be designed in two phases, wherein the project can be advertised and constructed as two separate projects. The Mitchell St. drain is scheduled to be advertised in October, 1983 to comply with the H.C.D.A. funding requirements. Please advise if you desire to have this item presented to the Council for their information and/or action. BOb LedendeCker Director of Public Works/ City Engineer db