GENERAL52775

• Permit No: M2000158
• IBM Index Class Name: General Documents
• Doc Date: 6/25/2001
• Doc Name: SUPPLEMENTAL DISCLOSURE OF MICHAEL PTASNIK
• Media Type: D
• Archive: No

Lawrence S&H Well Injury Letter
Page 2
calculated after 90 days of simultaneous pumping, which would be the case during a dry year.
The historic drawdown for each well is the result of the effect of that particular well's pumping on
itself and the commutative injury from all of the other pumping wells on that pazticulaz well. This
exercise was conducted for each well.
Table 1 contains a summary of the historic drawdown for each of the 16 irrigation wells and 9
domestic wells, column [2].
Ltle l
Summary ofR'ell Drawdown

5amrated Hinori<
Well lLitkura~ Drawdown
IR) (R)

Dnwdown
with
S&H Pit
(R)
(f / /11 /3/
IlOlI 20 14.88 18.88
3-11042 30 16.90 18.90
3.11540 30 15.71 19.71
10717 30 16.75 20.75
4a209F 30 18.54 27.54
2-11017 ~ 30 2331 33.34
11198 40 24.89 31.89
11491 40 23.88 30.38
13626 40 24.57 29.57
5-11542 60 20.87 27.37
.4-11511 ~ 40 2227 27.7'7
IM1O Permit 50 16.82 21.32
1-12022 30 20.80 30.80
12918 40 20.88 27.38
1-12971 20 18.68 24.18
1-11131 30 15.62 19.62
Domestic 1,2 20 14.60 21.60
Domeatit 3,5,6 20 20.00 23.50
Domestic 4,7 20 20.00 26.00
Domenic 9,10 20 15.00 19.50
The drawdown associated with the proposed mining of the S&H pit is also presented in Table 1,
column [3]. Drawdown calculations for the dry pit mining were taken from Dennis McGran's
Mazch 23, 2001 memorandum to Greg Roush. McGran's estimated impact from the dry pit
mining was added to the historic well drawdown, column [2], in Table 1 to shows the potential
injury of the gravel mining on all of the wells at the end of the 90 day pumping period for the
wells and 365 days of continuous pit de-watering to a depth of 15 feet below the water table of 1
acre gravel cells.
LEAF ENGINEERING
Hydrology ~ Hydraulics ~ Water Resources ~ Water Quality
E:LLeaPPtamilcLLaw*entt S&H well injury letter report 2.wpd