A few researchers have estimated the monetary cost of motor vehicle water pollutants and hydrologic impacts, although most only consider a portion of these impacts.
(A few researchers; have estimated; the monetary cost of motor vehicle water pollutants and hydrologic impacts) (most; only consider; a portion of these impacts)
A few researchers most
have estimated only consider
the monetary cost of motor vehicle water pollutants and hydrologic impacts
a portion of these impacts