percponds {inldata}

Percolation Ponds

Description

Percolation ponds in the vicinity of Idaho National Laboratory (INL), eastern Idaho. Wastewater from facilities at the INL has been and is currently disposed of in percolation (infiltration), evaporation (lined and unlined), and infiltration ponds.

Usage

percponds

Format

A simple feature with fields:

name

Name of the percolation ponds.

facility_id

INL facility the percolation pond is located at. Abbreviations and descriptions are as follows: "ATRC" is the Advanced Test Reactor Complex, "CFA" is the Central Facilites Area, "INTEC" is the Idaho Nuclear Technology and Engineering Center, "MFC" is the Materials and Fuels Complex, "NRF" is the Nuclear Reactors Facility, "RWMC" is the Radoiactive WAste Management Complex, and "TAN" is the Test Area North facility.

min_dt

Approximate year when the percolation pond was activated, with missing values indicating that the information is not available.

max_dt

Approximate year when the percolation pond was decommissioned, with missing values indicating that the pond is still in operation.

geometry

Polygon geometry with a positive area (two-dimensional); sequence of points that form a closed, non-self-intersecting ring; the first ring denotes the exterior ring, zero or more subsequent rings denote holes in this exterior ring.

Source

U.S. Geological Survey Idaho National Laboratory Project Office. Polygons representing percolation ponds were digitized from historical Google Earth imagery, dating as far back as 1985.

Examples

print(percponds)