Freeboard Clause Samples

Freeboard. The vertical distance between the design high water mark and the top of a pond (or other structure). Most ponds have one to two feet of freeboard to prevent them from overflowing. Infiltration – The soaking of water through the soil surface into the ground (percolation is essentially the same thing). Many ponds are designed to infiltrate or retain stormwater, and thus do not have a regularly used discharge pipe. Infiltration Facility (or Structure) – A facility (pond or trench) which retains and percolates stormwater into the ground, having no discharge (to any surface water) under normal operating conditions. Junction – Point where two or more drainage pipes or channels converge (e.g. a manhole). Jurisdiction – Lacey, Olympia, Tumwater, or Thurston County (as applicable). Lined Pond or Conveyance – A facility, the bottom and sides of which have been made impervious (using, for example, a plastic liner or clay/silt soil layer) to the transmission of liquids.