Project Overview

The Federal Clean Water Act and National Pollutant Discharge Elimination System require that the Greater Orlando Aviation Authority 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 21 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 and 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 state and federal regulations and assists flood control measures.

System Description

YSI 6-series multi-parameter sondes were chosen for water quality monitoring. With sensors for measuring temperature, conductivity, and optical turbidity, these sondes offer the latest in sensor technology and require little maintenance.

OTT Thalimedes float-operated shaft encoders were selected for water level monitoring. The Thalimedes offers a simple, yet highly reliable method for detecting and logging water level data. The unit is small and easily hidden in a four- or six-inch deployment pipe. An OTT locking well cap secures the unit.

In the GOAA environmental project office, a PC running NexSens iChart software queries the field sites on a periodic schedule, receiving the real-time data via spread spectrum, license-free radio telemetry. 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 web datacenter.


NexSens iSIC Data Logger

Specifically designed for remote environmental monitoring applications, the iSIC data logger offers superior data acquisition performance in extreme conditions.

YSI 6600 V2-2 Multi-Parameter Water Quality Sonde

The YSI 6600 V2-2 sonde offers the most comprehensive water quality monitoring package available and is designed for use with the 6562 Rapid Pulse polarographic DO probe.

Vaisala WXT520 Multi-Parameter Weather Sensor

The Vaisala WXT520 multi-parameter weather sensor is a compact and lightweight multi-sensor instrument that measures the most essential weather parameters.

NexSens iChart 6 Software

iChart software simplifies and automates many of the tasks associated with acquiring, processing, analyzing and publishing environmental data.

NexSens WQData LIVE Web Datacenter

WQData LIVE is a secure web datacenter providing an online interface for viewing environmental data. It offers 24/7 instant access to project data using any web browser.