NAME GW Engineering EXAM II FALL 2010 NOTE: Supplemental Materials pages 9-12 Page I Piper Graph Paper Page 10-11 Chemical Constants Page 12 Well Functions Note point values: Problem 1 and 2 are 30 points each Problem 3 = 15 points Problem 4 = 25 points PROBLEM #{ - 30 points USE UNITS of FEET and DAYS ANSWER THE QUESTION ON THE FOLLOWING PAGE, SHOW YOUR WORK USE UNITS of FEET and DAYS The pumping well in the figure below withdraws 40,000 ft3/day of groundwater beginning on Nov 1"t at noon. At noon on Nov 4 the withdrawal of groundwater is decreased to a rate of 25,000 ft3/day. What is the drawdown at the observation well on Nov 6 @ noon? .> il q""v {/ o se/tn /:s (- ("tn \ (-\l h] ,Q r# co4lyg nF' a # ,{n*n$et Obse*a$on\N*u,ff- L{ = S$4 5 10 ftldaY t$0fi'thicn Iigb[Sand I of12 GW Engineering EXAM II FALL 2010 PROVIDE CALCULATIONS AND ANSWERS TO PROBLEM 1 HERE USE UNITS of FEET and t't\ f'*-/ SHOW YOUR WORK!!!! bM.1. N,vt Za"b NavO T=- \ OO S+ rk \o e+ fd*'A ' ?.r\i ^tr*rc-\\ 40, oo a [k]f ^^\ 5A"1a ? r.,6 \ErooD se\ - s?z 5\\ ,n' 1 DAYS >rL 5a"1p r.r'..a42we\\ -ADrDoa \ + lrl oao \,L- rtS 4TY SRI 5tz Y7+ l)ab =F u PL*) l}ao L lBoo s I'tL l(0o L Si I z^PtL = 5 looo-$"t 7a-r6 5, b { lo-3 -s*lo4 A,-l 3 zu 3,b*rf3 5*U q*l'-a {' \q ( --J lvl D 4{T >= 6' 4o oOa -4ilooo + rftooo z \z,r&to 4rrT \1 -l5ooD -- n{ -50 b{ - \b ,\\ 4,q't l.l3 et 2of12