water sampling

Question 1

Groundwater Properties

Answer 1

1. DO content should be 0 (anaerobic)
2. Free of O2, dissolved iron at Fe2+, lowest valence
3. does not contain particulate
4. Movement of grdw depends on P, Gravity & Porosity

Question 2

Well depth

Answer 2

1. need to calculate the column of water sitting in the well
2. calculated as volume
3. remove the stagnant water from the well to ensure we collect a representative sample for specific gravity, pH, EC

Question 3

Darcy’s Law

Answer 3

Q/A = -k (Δh/ΔL)
state: the amount of water flowing across the sectional area is equal to the negative hydraulic EC * change in height over change in distance