opposite side handle perched water

[sunrise111]

на противоположной подвешенной воде? верховодке?
что тут слово handle делает?

clay layer above sub grade may require sand drains on opposite side handle perched water

[alk]

в оригинале "to handle"
http://www.quebesec.com/e-tech_wellpoints.html

Trench dewatering with wellpoints.
(a) Uniform soil can be dewatered with wellpoints on one side.
(b) A clay layer above subgrade may require sand drains on opposite side to handle perched water.
(c) Clay at and below subgrade may require wellpoints on both sides of trench.