Acceptable on-site retention systems are grassy swales, french drains, and retention basins if they permit infiltration within 24 hours. The comprehensive stormwater master plan will recommend additional structural controls in the form of BMP's and expected BMP pollutant load reductions. Existing road and drainage system maintenance practices will also be evaluated and recommendations made after the system inventory are completed. A water quality monitoring and investigative procedure manual is a deliverable in the master plan contract. A swale control program is important to the overall stormwater management effort in the City of Hialeah and one that has not gained political support in the past.
Paved swales are numerous in residential areas.
This program's importance will be highlighted in the stormwater master plan with the hope of gaining the necessary support needed for its implementation. Source Controls Existing environmental protection programs mandated by Chapter 24 of the Metropolitan Dade County Code require operating permits, frequent inspections by trained County staff, and unusual event reporting at all industrial facilities , hazardous waste facilities and landfills on a countywide basis. Construction sites require dewatering permits, storm sewer inlet protection, and surface water protection devices such as silt screens. Given the minimal slopes, low ground elevations, and low potential for future large-scale development in highly urbanized Hialeah, these existing construction site control measures are considered sufficient with proper enforcement. The City of Hialeah plans to supplement these efforts in its storm sewer inspection and monitoring program.