kattega puurauk, mida saab kasutada põhjavee taseme pidevaks mõõtmiseks ja kvaliteedi pidevaks või perioodiliseks vaatlemiseks ja hindamiseks või mullaaurude tuvastamiseks
well means a cased and screened boring or drilled hole, installed within the tank excavation or piping trench that can be used for the continuous or periodic evaluation of groundwater quality or the detection of soil vapors
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