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Table 1

Protocol established for assigning coordinates to effluent discharge

Satellite imagery revealedCoordinates were assigned
A visible effluent discharge pipe To the pipe location 
Chlorination pond Selected 25 meters (m) from the shoreline closest to the pond in the waterway. For small streams (<50 m wide), the center of the stream was selected 
No visible chlorination ponds or UV structures The settling tanks were used as the point of reference to measure 25 m out from the shoreline closest to the tanks to select the point in the water. For small streams (<50 m wide), the center of the stream was selected 
More than one waterbody was near the WWTP The closest body of water was selected 
Satellite resolution was poor The discharge was assigned to the largest waterbody within 1.61 km (1 mile) of the plant 
More than one waterbody equidistant from the WWTP The discharge was assigned to the largest waterbody within 1.61 km (1 mile) of the plant 
Satellite imagery revealedCoordinates were assigned
A visible effluent discharge pipe To the pipe location 
Chlorination pond Selected 25 meters (m) from the shoreline closest to the pond in the waterway. For small streams (<50 m wide), the center of the stream was selected 
No visible chlorination ponds or UV structures The settling tanks were used as the point of reference to measure 25 m out from the shoreline closest to the tanks to select the point in the water. For small streams (<50 m wide), the center of the stream was selected 
More than one waterbody was near the WWTP The closest body of water was selected 
Satellite resolution was poor The discharge was assigned to the largest waterbody within 1.61 km (1 mile) of the plant 
More than one waterbody equidistant from the WWTP The discharge was assigned to the largest waterbody within 1.61 km (1 mile) of the plant 
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