Stormwater Monitoring - Orlando International AirportProject Overview
The Federal Clean Water Act and National Pollutant Discharge Elimination System (NPDES) require that the Greater Orlando Aviation Authority (GOAA) use pollution prevention and abatement techniques at the Orlando International Airport.
To meet the goals of the Clean Water Act and ensure the effectiveness of its Stormwater Pollution Prevention plan, the airport has developed a stormwater monitoring program that includes a network of water quality and water level monitoring devices at strategic water resource locations around the airport.
In order to maximize the efficiency of data collection, data processing, and equipment maintenance, airport officials chose NexSens Technology to install twenty-one remote, solar-powered field sites that collect both water quality and stage data at 15-minute intervals. The data is sent via radio telemetry to the environmental project office, and it is also available to contractors and airport personnel via the Internet.
Prior to the project's implementation, the FAA had issued an advisory circular concerning hazardous wildlife attractants on or near airports. The circular addressed retention ponds and their structures as being a potential attractant for birds. GOAA has since entered into a wildlife habitat reduction/mitigation agreement with the FAA that addresses a number of issues with ponds and their locations at the airport.
As construction proceeds at the airport, officials can use the data collected from various sites to assist in the design of future ponds, and possibly modify the existing stormwater system to meet the requirements of the FAA advisory circular. The data also ensures that water quality meets both the State and Federal regulations and regulates flood control measures.
System Description
The YSI 6-series multi-parameter sondes were chosen for water quality monitoring. With parameters measuring temperature, conductivity and optical turbidity, these sondes offer the latest in sensor technology and require very little maintenance.
The OTT Thalimedes float operated shaft encoders were selected for water level monitoring. The Thalimedes offers a very simple, yet highly reliable method for detecting and logging water level data. The unit is small in size and is easily hidden in a 4 or 6 inch deployment pipe. An OTT locking well cap secures the unit.
NexSens iChart software queries the field sites on a periodic schedule, sending the real-time data via spread spectrum, interference-free radio waves to the GOAA environmental project office. iChart software then allows for data storage, analysis, graphical output, and system management from one central location. This data is also available to contractors and airport personnel via WQData, a password-protected website. | NexSens 1001 | iChart 6 software, licensed per computer | NexSens WQData-24 | Annual web datacenter & hosting package for up to 24 field sites | NexSens 4100-BASE | Spread spectrum radio base station | NexSens A41 | Omni antenna, radio frequency, 890-970 MHz | NexSens A32 | RF cable, low-loss, 20' | NexSens 4100-iSIC | iSIC data logger with spread spectrum radio telemetry | NexSens A55 | Pole/wall mounting kit | NexSens A38 | Ground kit | NexSens A22 | 20-watt solar power kit for iSIC data loggers, 15' cable | NexSens A46 | Yagi antenna, radio frequency, 866-960 MHz | NexSens A31 | RF cable, low-loss, 10' | NexSens A39 | Lightning protection, radio, cellular & satellite | NexSens A35 | RF cable, micro-loss, 2' | YSI 6600-00 | 6600 V2-2 Sonde with temperature/conductivity sensor | YSI 6561 | pH sensor | YSI 6562 | Dissolved oxygen sensor, polarographic, rapid-pulse | YSI 6136 | Turbidity sensor with self-cleaning wiper | YSI 6091 | Field cable, 25 ft. | OTT 55.430.001.3.2 | Thalimedes shaft encoder & data logger (requires float, counterweight & cable) | OTT 27.001.071.3.5 | Float, 80mm dia. | OTT 27.050.013.4.2 | Counterweight, 0.1 kg | OTT 27.150.040.9.2 | Float cable, 1.0mm dia., 10m length | Vaisala WXT510AAA0AA00B0 | Multi-parameter weather sensor, SDI-12 | NexSens WXT510-M | Mounting kit for Vaisala WXT & WMT sensors, 2" female NPT |
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