Effective Stresses

In a saturated mass of soil or rock, the total stress P minus pore water pressure, Uw.

Effluent

A generic term used to indicate the relative strength of sewer flows; from stormwater to wastewater to industrial effluent, for example.

Efflux

Flowing out of.

EHMWHD

Extra High Molecular Weight High Density as originally noted in ASTMAmerican Society of Testing and Materials; technical organization formed for the development of standards on characteristics and performance of materials, products, systems and services, and the promotion of related knowledge. D1248, GradeThe elevations shown on plans and/or survey grade stakes for the installation of the carrier pipe. It is occasionally to give elevations for casing. In most cases, it is given to the flow line but can also be given to the top of the pipe or casing. P34 materials were specifically EHMW high-density polyethylene materials.

Ejector Pump

See Sewage Ejector PumpA sewage ejector pump is used to pump wastewater to an elevation whereby the wastewater can flow by gravity to the sewer..