Manholes with vertical PVC pipe inside. Can anyone identify what these are?
Manholes with vertical PVC pipe inside. Can anyone identify what these are?
(OP)
Hello,
Need help identifying what these are for (see images below). Found three of these in a small parking lot between a gas station and fast food restaurant. Any ideas?
Thanks,
Randal

Need help identifying what these are for (see images below). Found three of these in a small parking lot between a gas station and fast food restaurant. Any ideas?
Thanks,
Randal


RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
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"Is it the only lesson of history that mankind is unteachable?"
--Winston S. Churchill
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
Groundwater inspection wells.
Inspection wells for underground infiltration fields.
Tie a rock to a string and drop it down there slowly. Come back and tell us how deep the thing is, whether the rock got wet, and whether it smelled funny.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
RE: Manholes with vertical PVC pipe inside. Can anyone identify what these are?
Based on this, there's two likely options:
1) groundwater monitoring for effluent (as oldestguy says)
2) inspection port for an underground stormwater infiltration system, to determine that it's infiltrating stormwater properly
If you're in an area of high groundwater, there's probably no way to differentiate without looking at the site plans. If you're in an area of deep groundwater, then the answer is probably (2), and further likely that you discovered evidence that it's not working as intended.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com