ENVIRONMENTAL ENGINEERING Practice Question (a) List the three categories of use that account for most of the wells constructed,and identify the characteristics that are common to all wells.a) Production wells that yield fluid deposits (water, oil, gases etc).b) Injection wells that serve as disposal conduits for hazardous or industrialliquid waste. They may also serves as points for Aquifer Recharge.c) Monitoring wells that are used to measure groundwater levels and quality. (b) Consider a contaminant plume that is 100m wide x 30m thick x 1000m long. Ifd’Arcy’s velocity is 2.0 x 10 -6 m/s and the aquifer porosity is 0.3, whatminimum pumping rate would assure full plume capture, and how far apartshould two wells be placed for optimal location / alignment along the leadingedge of the plume? (C). How long would it take to pump an amount of water equal to the volume of the water contained in the plume? State any assumptions made.
ENVIRONMENTAL ENGINEERING Practice Question
(a) List the three categories of use that account for most of the wells constructed,
and identify the characteristics that are common to all wells.
a) Production wells that yield fluid deposits (water, oil, gases etc).
b) Injection wells that serve as disposal conduits for hazardous or industrial
liquid waste. They may also serves as points for Aquifer Recharge.
c) Monitoring wells that are used to measure groundwater levels and quality.
(b) Consider a contaminant plume that is 100m wide x 30m thick x 1000m long. If
d’Arcy’s velocity is 2.0 x 10 -6 m/s and the aquifer porosity is 0.3, what
minimum pumping rate would assure full plume capture, and how far apart
should two wells be placed for optimal location / alignment along the leading
edge of the plume?
(C). How long would it take to pump an amount of water equal to the volume of the water contained in the plume? State any assumptions made.
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