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  1. Randal_H

    Manholes with vertical PVC pipe inside. Can anyone identify what these are?

    I was originally thinking groundwater monitoring for the gas station, but there appear to already be the standard size (i.e. smaller) monitoring well covers in the gas station lot. A colleague here thinks they are for underground stormwater control. There is standing water in the pvc pipes...
  2. Randal_H

    Manholes with vertical PVC pipe inside. Can anyone identify what these are?

    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
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