REV96858

• Permit No: M1997058
• IBM Index Class Name: Revision
• Doc Date: 3/20/2001
• Doc Name: APPLICATION FOR AMENDMENT TO MLRB 112 PN M-1997-058 HALL-IRWIN CORP BASELINE RESOURCE
• Type & Sequence: AM1
• Media Type: D
• Archive: No

Table 1 - 2
Baseline Resource
Evaporative and Operation Losses -South Site (Year 1)
1 Q) 3 4) (0 0)
Percent of Gross Average Effective Nef Net Wafer Surtaee
Monts Annual EvaporaBOn PreClpifarion Aecipilation Evaporarion Evaporarion for
Evaporation 5.1 acres
(Inches) tithes tithes tithes) acre~teel)

January 3.0% 0.00 0.48 0.34 0 00 0.00
February 3.5% 1.68 0.41 0.29 1.39 0.59
March 5.5% 2.63 1.26 0.88 1.75 0.75
April 9.0% 4.31 1.56 1.09 3.22 1.37
MaY 12.0% 5.74 2.56 1.79 3.95 1.68
June 14.5% 6.94 1.8d 1.29 5.65 2.41
July 15.0% 1.18 1.55 1.09 6.10 2.60
August 13.5% 6.46 1.53 1.07 5.39 2.30
September 10.0% 4.79 1.01 0.11 4.08 1.74
October 7.0% 3.35 0.87 0.61 2.74 1.11
November 4,0% 1.91 0.93 0.65 1.26 0.54
December 3.0% 0.00 0.55 0.39 0.00 0.00
Total 100.0% 45.00 14.55 10.19 35.54 15.15
B 10 11) 12) (13)
Portent of Amount of Wafer Used Wafer Used Sub-Total Total Annual
Month Annual Concrete In Concrete for Dust Operatonal Evaporative Distribution of
Aggregate Production Botching Control Losses & Operational Total
& Concrete Losses Losses
Production cubb vgrns) acre-xeer) acre-tee aue-rea acre-teer7 acre-teat
January 0.0% 0 0.~ 0.00 0.00 0.00 2.05
February 0.0% 0 0.00 0.00 0.00 0.59 2.05
March 5.5% 2.200 0.3d 0.37 0.71 1.46 2.05
April 9.0% 3.600 0.55 0.37 092 2.29 2.05
May 13.0% 5.200 0.80 0.37 1.17 2.85 2.05
June 16.5% 6.600 1.01 0.37 1.38 3.79 2.05
July 18.0% 7,200 I.10 0.37 1.47 4.07 2.05
August 15.0% 6.000 0.92 0.37 1.29 3.59 2.05
September 11.0% 4.400 0.68 0.37 1.04 2.78 2.05
October B.G% 3.200 0.49 0.31 0.86 2.03 2.05
November 4.0% 1.600 0.25 0.37 0.61 1.15 2.05
December 0.0% 0 0.00 0.00 0.00 0.00 2.05
Total 100.0% 40,000 6.14 3.31 9.45 24.60 24.60
Notes:
(q From BB 120, me evaporation peroentoges are ter grovel pits wim elevglions below 6.500 teat.
(2) Equo6 Percent d Annual Evaporation times 45 inches. PSwme zero evaporation during monhs wim ice coverage.
TOfal alSfrlbNetl over 10 montrts. IDB fpfal evapprgflOn was taken ham me NOAH iephalCd Rapon NW533.
(3) From Cobrado State Univer5iry's Cdapao Climate Censer web page. http://ccc.atngscobstate.edu for &ighton weamer 3lgnon.
(d) Equo6 Column (3) times 70 percent 70 percent value was taken ham $B 120.
(5} Equo6 Column (2) minus Column (d). II the resultant value 6 less man zero men a zero i5 wissntutetl.
(6) Equals Column (5) tlNitletl by 12 times 5.11 acres. Surface area (5.1 I acres) based on approximate size of wurce. Seining ponds and aewatenng trench fo liver.
(1) Based on in(ortnaflon from Holblrwin
(8) EQUa6 Column (7) trines 40,000 tons per year. ProtluCnon b¢setl on inlormanon Irom Hall-Irwin.
(9) Equo6 Column (8) rimes 50 gaNOns tlrvitled by 025851. Asvme a use of 50 gallons per cubic yard of concrete protlucnon.
(10) Equals 6000 gallons per tlw times number of operating dogs (20 days) in me monm tlNitled by 325851. tluring production mmms (Match mm Novembeq.
(11) Equo6 me sum of Columns (9 & 10).
(12) Equo6 me win of Columns (b & 11).
(13) La991ng not requrtetl for tlepienons from wimm fne 9urry wall, pgttem mown ¢ pnnud tolDl distributed over 12 months
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