Master Plan Development - City of Boca Raton

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City of Boca Raton Stormwater Management Master PlanInventory of Stormwater SystemData used to populate the database was prioritized in the order of the list given above. In aneffort to provide the most reliable interpretation of this information, files were reviewed and datawas acquired beginning with the most recent application.Table 1 provides a sample of a portion of the database of information developed for the permitswithin the City. Due to the size of the database, access is best achieved electronically.B. City’s Stormwater SystemThe City’s stormwater system consists of a network of pipes, structures (inlets, manholes, weirs,gates. etc.), canals, and lakes. The City has identified over 6,200 linear feet of pipe that is itsresponsibility, 27 linear feet the responsibility of FDOT, 186 linear feet the responsibility ofprivate entities, and 527,000 linear feet not attributed to an owner. The City claims over 7,000structures in its system and has identified 2,771 private structures, 886 State/County structures,and over 800 structures not attributed to an owner. While the City’s claim to ownership indicatesmaintenance of those components, the City considers the entire stormwater system within theCity limits to be part of its MS4. The knowledge of which system components are and which arenot the responsibility of the City is important for work scheduling, budgeting, and responding toresident concerns. A comprehensive geographic information system (“GIS”) of the stormwatersystem within the City would be a valuable tool for staff and residents.The City has already taken the first steps toward the development of a GIS for its stormwatersystem. The City provided two GIS coverages of its stormwater system; one includes the locationof the structures (catch basins, inlets, manholes, and headwalls), the other includes the linegeometry of the stormwater pipes connecting the structures. Each coverage has an associateddatabase of information. City staff used Environmental Systems Research Institute (ESRI)software (ArcGIS) to create files known as shapefiles from the spatial information, and populatedthe associated databases with information about components of the existing system. The structuredatabase includes fields for the type, status, right-of-way type, owner, rim elevation, and up tofour invert elevations. The pipe database includes fields for the size, length, shape, material,owner, and up to four invert elevations. Figure 3 displays the provided stormwater systeminformation.To move this initial GIS effort to the next level, additional information to populate the databasesshould be gathered and input. Additional fields in the databases that would be useful to City staffinclude: date of installation, last inspection/maintenance date; and the source of the informationreported. Identification of the source will be important when work is being done to update thedata fields as newer/more accurate information becomes available (from completed projectsand/or surveys of existing conditions).A fully developed stormwater GIS will enable staff to better manage the stormwater programsrequired by permit and code. It is recommended that the City undertake the advancement of itsL/bocaswmp/a6016.01/InterimReport 11-27-07/r02Page 6MOCK•ROOS
City of Boca Raton Stormwater Management Master PlanInventory of Stormwater Systemstormwater GIS as a stormwater system improvement project that could be phased over severalfiscal periods.C. Palm Beach County & FDOT Stormwater SystemsSeveral major roadways traverse the City, and associated with them are stormwater managementsystems that in some locations are connected to the City’s system. In addition, larger roadwaysystems, such as I-95, often incorporate drainage areas adjacent to the roadway that are outsidethe road right-of-way. In order to understand and document these systems, a records search wasconducted with PBC Engineering and Public Works Department, the Florida Department ofTransportation (“FDOT”) District IV Office, and FDOT West Palm Beach Operations Center.A search of the PBC Project List (updated February 12, 2007) was conducted and copies of therecord or construction drawings of the projects within the City were requested from theReprographics Department. Current project drawings, not available from the ReprographicsDepartment, were obtained from the Roadway Production Division.A formal records request was submitted to FDOT’s District IV Office for projects located withinthe City. This resulted in electronic and hard copies of roadway improvement projects, includingthe respective drainage design. A search of the drawings on site at the Operations Center wasalso conducted to locate additional record information. Maps containing FDOT outfall locationswere obtained from the Operations Center.PBC and FDOT stormwater system components were added to the stormwater network shapefiles,based on the design and record drawings received. The components’ jurisdiction and the source ofthe information were added to the associated databases. This information is shown, along with theCity’s information, in Figure 3.D. Drainage Complaints SummaryThe City provided a hard copy of the Drainage Complaint Evaluation and Improvement Prioritiesreport that was completed by Williams, Hatfield & Stoner, Inc. (“WHS”) in July 1999. Thisreport evaluated and ranked each of the complaints in the City’s Resident Complaint Log throughan unspecified date in 1998. The City indicated that many of these complaints are still relevant.In addition, the City provided an electronic copy of its Resident Complaint Log spreadsheet. Thisfile included complaints in addition to those evaluated in the WHS report. There are 109complaint entries in the log. WHS evaluated 48 locations; the remainder have not been evaluatedby the process used in the WHS report.Using the address and description fields for each of the complaints, a shapefile of the location andapproximate extent of each drainage complaint was developed. The Complaint Log database wasconverted to an associated database for the shapefile that was created. Figure 4 depicts theshapefile and Table 2 is the associated database that was developed. The complaint map andL/bocaswmp/a6016.01/InterimReport 11-27-07/r02Page 7MOCK•ROOS
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Master Plan Development - City of Boca Raton

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