STEP DRAWDOWN TEST DATA PLOT = Drawdown data. X = Recovery data. LOCALITY
Phalaborwa
Foskor NPM Phase II
BOREHOLE NO:NPM4S
DATE TESTED 31/03/2011 DISCHARGE RATES (Q) Q1 = 0.50 l/s Q2 = 1.10 l/s Q3 = 2.12 l/s Q4 = 0.00 l/s Q5 = 0.00 l/s Q6 = 0.00 l/s S.W.L = 27.24 m.b.g.l.CONSTANT DISCHARGE TEST DATA PLOT
= Drawdown data. = Recovery data. LOCALITY
Phalaborwa
Foskor NPM Phase II
PUMPED B.H. NO:NPM4S
DATE TESTED 27/04/2011 Q = 1.10 l/s. S.W.L = 27.24 m.b.g.l. T = 2.65 m²/daySpec. Cap. = 0.037 m3/day/m
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 10 100 1000 10000 D ra w d o w n s (m) Time t (min.) R e s id u a l D ra w d o w n s ' ( m) . (T+t)/t 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 0.1 1 10 100 1000 D ra w do w n s (m) Time ( t ) mins.
