anti-seep collars
A panel of concrete or other impervious material placed on the outside surface of underground conduits to lengthen the flow path and thus impede seepage.
Authorization Path: 2.4.5.2.20.15
A panel of concrete or other impervious material placed on the outside surface of underground conduits to lengthen the flow path and thus impede seepage.
Authorization Path: 2.4.5.2.20.15