alpha - coefficient of compressibility of ROCK (m2/N) n - POROSITY beta - coefficient of compressibility of WATER (m2/N)

Darcy's Law in ISOTROPIC media (general case) i.e. no preferential directions of flow path in the material, discharge is in the same direction as driving force. k = intrinsic permeability of the medium mu = dynamic viscosity of the fluid

Specific Storavity; relationship between change in mass of water per unit volume of rock, and change in head Change in storavity required to define time-varying storage of fluid in the rock.

High porosity doesn't necessarily mean high yield: - clays have very high porosity but have high specific retention and thus low yield. - specific retention has an inverse relationship to specific yield

fadfs

Need to consider all the possible sources of contaminants and keep an eye on them otherwise it will take too long too notice if something goes wrong.

Boo

H = pressure head h = H +z hydraulic/piezometric head

Darcy's Law h2 - h1 average hydraulic gradient from point 1 to point 2 q - specific discharge from point 1 to point 2 K hydraulic conductivity, measure of ease of movement, m/s

Applied to a point, but SPECIFIC discharge, average HYDRAULIC GRADIENT, and HYDRAULIC CONDUCTIVITY is only defined as an average through the rock. Assumes the volume under consideration is small compared with the scale of the problem.