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This is a text-only version of the document "South Heart - Lignite Mine Application - Ch 2.2 - Climate - 2010". To see the original version of the document click here.
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TABLE OF CONTENTS
2.2 Climate ................................................................................................................................ 1 2.2.1 Historic Data ................................................................................................................ 1 2.2.1.1 Precipitation ....................................................................................................... 1 2.2.1.2 Temperature ....................................................................................................... 2 2.2.1.3 Relative Humidity .............................................................................................. 2 2.2.1.4 Wind Speed and Direction ................................................................................. 2 2.2.2 On-Site Meteorological Data........................................................................................ 3

LIST OF TABLES
Table 2.2-1 Table 2.2-2 Table 2.2-3 Table 2.2-4 Table 2.2-5 Table 2.2-6 Table 2.2-7 Existing and Historic Meteorological Stations Monthly Mean Historic Precipitation Mean Annual Precipitation Monthly Mean Historic Temperature at the Dickinson Municipal Airport (July 2, 1949 -– December 31, 2009April 30, 2007) Average Historic Relative Humidity by Month at Six-Hour Intervals at Bismarck (1931-1960) Parameters Measured from theat the South Heart Meteorological Station Daily Average, Maximum and Minimum Values for Wind Speed, Wind Gust, Wind Direction, Wind Direction Variance, Air Temperature and Relative Humidity fromSummaries of Meteorological Data at the South Heart Meteorological Lignite Mine Station Daily Values for Barometric Pressure, Weighing Bucket Rain Gage, Tipping Bucket Rain Gage and Solar Radiation from the South Heart Meteorological StationMonthly Summaries of Meteorological Data by Year at the South Heart Lignite Mine Station Monthly Average, Minimum and Maximum Values for Wind Speed, Wind Gusts, Wind Direction, Wind Direction Variance, Air Temperature and Relative Humidity, by Year from the South Heart Meteorological Station Monthly Values for Barometric Pressure, Weighing Bucket, Tipping Bucket and Solar Radiation, by Year from the South Heart Meteorological Station

Table 2.2-8

Table 2.2-9

Table 2.2-10

LIST OF FIGURES
Figure 2.2-1 Figure 2.2-2 Figure 2.2-3 Figure 2.2-34 Existing and Historic Meteorological Stations Monthly Mean Historic Precipitation Values Observed Annual Precipitation Windrose for the Dickinson Municipal Airport Station

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In accordance with: •

Section 38-14.1-14(1)(p), North Dakota Century Code (NDCC).

This section presents the climatological conditions for the area within the Permit Boundary as shown on Figure 2.2-1. Data from existing and historic meteorological (MET) stations and from a MET station installed within the Permit Boundary in 2006 were used to describe these climatological conditions. The MET station locations are also shown on Figure 2.2-1. Data collected from these existing and historic climate stations include average seasonal precipitation, seasonal temperature ranges, average relative humidity records, and average direction and velocity of prevailing winds. 2.2.1 Historic Data

Daily historical data were obtained from the National Climate Data Center (NCDC)/National Oceanic and Atmospheric Administration (NOAA) and the on-line North Dakota State Water Commission (NDSWC) precipitation databases. The criteria used for selecting the existing

MET stations were based on the proximity to the Permit Boundary (Figure 2.2-1), elevation and availability of information. The elevation range within the Permit Boundary is approximately 2,490 feet to 2,541 feet. The elevation range for the MET Stations is approximately 2,451 feet to 2,621 feet. Table 2.2-1 presents the MET station locations, elevation, period of record,

and parameters used in this evaluation. Data sets for three of the MET stations (Belfield Station No. 320639, Dickinson Exp. Station No. 322188 and Dickinson Municipal Airport Station No. 322183) are from NCDC (NWS 2007). Data sets for four of the MET stations (759, 3995, 1945, and 4323) are from NDSWC (2007). 2.2.1.1 Precipitation

Monthly mean precipitation values recorded at the NCDC and NDSWC stations are shown on Figure 2.2-2 and summarized in Table 2.2-2. Table 2.2-3 presents mean annual precipitation data at the three NCDC stations. Precipitation data from the NDSWC stations were not included because of their short-period of record and lack of records for the months of October through March. The highest monthly mean precipitation value of 3.78 inches was observed in June at the Belfield

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The lowest value of 0.302 inches was observed in December at the

Dickinson Municipal Airport Station. Monthly precipitation values vary substantially by season. Higher precipitation values are observed from April to October, and peak in June at all stations. Figure 2.2-3 shows observed annual precipitation at the three NCDC MET stations. 2.2.1.2 Temperature

The mean annual temperature within and adjacent to the Permit Boundary is reported as 42.4 °F at the Dickinson Municipal Airport MET Station (NWS 2007). The coldest months are November through March with mean monthly temperature values below 30 °F. The warmest months are June, July and August with mean monthly temperatures above 60 °F. The lowest and highest recorded temperatures at the Dickinson Municipal Airport MET Station for the period of record July 2, 1948 through April 30, 2007 are -35 °F and 109 °F (NWS 2007), respectively.Table 2.2-4 presents monthly temperature values of daily mean maximum, daily mean minimum, and daily mean average temperature between July 2, 1949 to April 30, 2007December 31, 2007. 2.2.1.3 Relative Humidity

Relative humidity was not recorded historically within the Permit Boundary. Therefore, data from Bismarck, North Dakota (1931 to 1960) was used to characterize relative humidity. Relative humidity data was obtained from the “Climate of North Dakota” report, prepared by Ray Jensen in 1998 and posted on the USGS website (Jansen 1998). Average relative humidity records at six-hour intervals are presented in Table 2.2-5. Regardless of the month of record, average relative humidity has been higher at the 12:00 AM (midnight) and 6:00 AM periods than at the 12:00 PM (noon) and 6:00 PM periods. 2.2.1.4 Wind Speed and Direction

Wind speed and direction were evaluated using data recorded from 1990 to 1994 at the Dickinson Municipal Airport. Data was obtained from the North Dakota Department of Health (NDDH) by TRC Environmental Corporation (TRC 2005). Collected data indicates that prevailing wind

directions in the region are west and northwest during most of the year. Average wind speed ranges from 10 to 13 miles per hour. The average wind speed for the five-year period of record is also 10 to 13 miles per hour. A composite frequency distribution of wind direction and wind speed for the

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five-year period of record is shown on Figure 2.2-4 Figure 2.2.3. The wind rose diagram indicates prevailing wind directions from the west, northwest approximately 14 percent of the time with secondary wind flow prevalence from the west approximately 11 percent of the time. The lowest frequency of wind directions is from the north northeast, which only occurs 2.5 percent of the time. 2.2.2 On-Site Meteorological Data

The MET station within the Permit Boundary was installed on October 18, 2006. Data collection began on October 25, 2006. Data were recorded on hourly intervals at the station. Table 2.2-6 lists the parameters collected at the station. The daily and monthly averages, minimums and maximums, except for the rain gages and solar radiation,data summaries are presented in Table 2.2-7 and, Table 2.2-8 Table 2.2-9, and Table 2.2-10. Precipitation is presented as daily or monthly totals, and solar radiation is presented as average and maximum, since the minimum is always zero (recorded every night). The two rain gages represent different methods of measuring precipitation. The weighing bucket (RNw) is more reliable during the winter months when snow is the major form of precipitation. Data are reported from October 25, 2006 through September 23, 2007December 31, 2009 but had intermittent periods where no data were collected due to a datalogger or equipment malfunction. Periods in which no data were collected included December 2006, January 2007, and the second half of February until March 13, 2007.Data from the Dickinson Exp. Station No. 322188 and Dickinson Municipal Airport Station No. 322183 are available during these periods. After March 13, 2007 the record is continuous. On March 27, 2007, the configuration of the station was changed.

Sensors recording high wind speed for the hour (GUST) were removed and a sensor for solar radiation (SR) was added. The value “No Data” was added to the GUST column and the SR columns, to differentiate the time periods when the sensor was added or removed.

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TABLES

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FIGURES

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TABLE 2.2-1 EXISTING AND HISTORIC METEOROLOGICAL STATIONS Station Number 320639 Coordinates X Y 1330038 453908 Elevation (feet) 2602

Station Name Belfield 1SW

Period of Record 1/1948-1/1978

Source NCDC

Parameters Daily Precipitation, Maximum and Minimum Temperature Daily Precipitation, Maximum and Minimum Temperature Daily Precipitation, Maximum and Minimum Temperature Daily Precipitation Daily Precipitation Daily Precipitation Daily Precipitation

Dickinson Exp Station Dickinson Municipal Airport 759 3995 1945 4323

322188

1420020 451045

2460

2/1900-12/2009

NCDC

322183

1424165 421735

2580

7/1948-12/2009

NCDC

759 3995 1945 4323

1420343 1319409 1326137 1366941

461981 436027 486884 434439

2451 2549 2621 2536

1977-2009 1996-2009 1997-2009 2004-2009

NDSWC NDSWC NDSWC NDSWC

* NDSWC sites recorded precipitation only during the months of April through September of each year NCDC = National Climate Data Center (NWS 2007) NDSWC = North Dakota State Water Commission (NDSWC 2007) Coordinates (State Plane, North Dakota South, NAD27)

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TABLE 2.2-2 MONTHLY MEAN HISTORIC PRECIPITATION Station Name January February Belfield 1SW Dickinson Exp Station Dickinson Municipal Airport 759 3995 1945 4323 0.57 0.42 0.39 0.54 0.42 0.42 March 0.76 0.73 0.71 April 1.76 1.38 1.58 1.08 1.09 0.21 1.25 May 2.75 2.34 2.29 2.63 2.71 2.43 1.58 June 3.78 3.63 3.22 3.67 2.92 2.93 2.36 July 2.71 2.22 2.24 2.47 2.43 3.05 2.23 August 2.03 1.75 1.55 1.73 1.31 1.84 1.33 September 1.48 1.38 1.43 1.63 1.36 1.48 0.98 October 0.97 0.98 1.00 November 0.63 0.53 0.51 December 0.45 0.41 0.30

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TABLE 2.2-3 MEAN ANNUAL PRECIPITATION Station Name Belfield 1SW Dickinson Exp Dickinson Municipal
* Precipitation in inches See Table 2.2-1 for the period of record and the source for each station Source: NCDC (NWS 2009) Source: NDSWC 2009

Mean Annual Precipitation 18.43 16.18 15.66

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TABLE 2.2-4 MONTHLY MEAN HISTORIC TEMPERATURE AT THE DICKINSON MUNICIPAL AIRPORT (JULY 2, 1949 - DECEMBER 31, 2009) Parameters Daily Mean Maximum Temperature (°F) Daily Mean Minimum. Temperature (°F) Daily Mean Average Temperature (°F) Annual Average
°F = degree fahrenheit Source: NCDC (NWS 2009)

January 23.3 3.7 13.5 42.4

February 29.3 9.7 19.5

March 39.0 17.9 28.4

April 54.1 29.8 41.9

May 66.2 40.9 53.5

June 75.2 50.3 62.8

July 83.5 55.7 69.6

August 82.8 54.2 68.5

September 70.9 43.6 57.3

October 57.6 32.8 45.2

November 40.0 19.3 29.7

December 28.2 8.9 18.6

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TABLE 2.2-5 AVERAGE HISTORIC RELATIVE HUMIDITY BY MONTH AT SIX-HOUR INTERVALS AT BISMARCK (1931-1960) Month January February March April May June July August September October November December Annual
Source: Jansen 1998 Units: percent

Midnight 70 74 74 69 70 76 74 70 73 68 73 72 72

6:00 AM 71 74 76 77 77 83 82 79 82 76 75 73 77

12:00 PM 65 68 61 52 48 54 48 43 49 46 58 65 55

6:00 PM 67 69 58 46 44 49 44 38 45 45 60 68 53

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TABLE 2.2-6 PARAMETERS MEASURED AT THE SOUTH HEART METEOROLOGICAL STATION Abbreviation
WS GUST WD Sigma AT RG BP RNw RNt SR

Parameter
Wind Speed Hourly maximum wind speed Wind Direction Variance in Wind Direction Air Temperature Relative Humidity Barometric Pressure Weighing Bucket Rainfall Tipping Bucket Rainfall Solar Radiation

Units
mile per hour mile per hour compass degrees compass degrees degrees Fahrenheit percent inches mercury inches inches watts/m2

On site station period of record - November 2006 -December 2009 Station Coordinates (State Plan, North Dakota, NAD27): X 1358961.9, Y 438535.8, elevation 2659.5 ft

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 10/25/2006 44.63 40.50 52.90 10/26/2006 41.98 32.80 54.60 10/27/2006 42.66 35.10 51.70 10/28/2006 41.03 28.30 56.30 10/29/2006 42.63 29.40 63.40 10/30/2006 22.76 16.20 28.40 10/31/2006 19.58 10.50 27.80 11/1/2006 20.80 15.40 25.80 11/2/2006 19.03 10.50 30.60 11/3/2006 27.06 16.80 33.70 11/4/2006 43.03 28.90 63.00 11/5/2006 43.75 33.80 62.40 11/6/2006 44.25 30.40 56.50 11/7/2006 56.21 44.70 74.00 11/8/2006 50.47 30.50 61.30 11/9/2006 30.58 27.90 35.30 11/10/2006 27.05 22.30 34.00 11/11/2006 33.89 26.10 44.40 11/12/2006 34.13 25.50 45.30 11/13/2006 36.40 25.60 47.90 11/14/2006 32.23 22.70 40.80 11/15/2006 27.89 16.60 43.10 11/16/2006 39.57 31.50 54.10 11/17/2006 33.81 24.40 47.30 11/18/2006 33.88 23.50 48.30 11/19/2006 34.98 21.60 50.90 11/20/2006 42.04 0.00 60.20 11/21/2006 43.08 33.50 57.80 11/22/2006 42.37 33.80 54.20 11/23/2006 36.53 28.80 47.80 11/24/2006 30.20 0.00 50.10 11/25/2006 11.08 5.70 17.70 11/26/2006 10.71 6.60 17.90 11/27/2006 13.48 6.20 20.80 11/28/2006 6.75 -6.60 20.90 11/29/2006 -4.38 -7.00 0.30 Note break in data 1/2/2007 44.10 44.10 44.10 Note break in data 1/31/2007 9.00 5.70 12.20 2/1/2007 4.71 -4.50 15.10 2/2/2007 -4.12 -10.90 1.80 2/3/2007 -6.33 -16.80 4.40 2/4/2007 4.41 -11.90 18.00 2/5/2007 12.95 3.40 21.00 2/6/2007 15.96 1.90 29.10 2/7/2007 5.56 -2.60 12.70 2/8/2007 2.12 -8.00 11.80 2/9/2007 7.18 -0.70 16.50 2/10/2007 13.39 5.60 21.00 2/11/2007 13.84 2.70 26.80 2/12/2007 6.84 4.50 10.40 Note break in data 3/13/2007 39.83 30.90 44.90 3/14/2007 31.43 26.70 39.00 3/15/2007 24.89 18.20 30.80 3/16/2007 29.32 19.00 40.90 3/17/2007 36.64 28.40 51.00 3/18/2007 44.77 31.30 65.30 3/19/2007 33.76 25.10 45.60 3/20/2007 50.95 31.50 76.60 3/21/2007 43.14 29.20 53.30 3/22/2007 42.25 25.60 57.90 3/23/2007 47.08 35.90 59.40 3/24/2007 48.96 31.70 67.80 3/25/2007 56.18 37.40 76.00 3/26/2007 50.58 40.10 59.80 3/27/2007 44.86 36.30 57.20 3/28/2007 47.47 37.80 51.40 3/29/2007 33.64 30.90 36.00 3/30/2007 30.55 25.90 45.90 3/31/2007 31.91 25.40 40.10 4/1/2007 35.56 28.20 43.50 4/2/2007 31.79 23.80 37.50 4/3/2007 21.05 15.80 27.50 4/4/2007 16.00 7.80 23.70 4/5/2007 19.17 11.40 28.40 4/6/2007 19.10 10.80 25.40 4/7/2007 19.21 11.60 27.80 4/8/2007 23.36 11.00 34.80 4/9/2007 28.28 17.70 39.60 4/10/2007 29.90 25.90 35.70 4/11/2007 29.11 27.00 33.30 4/12/2007 31.10 21.60 41.50 4/13/2007 38.80 24.90 51.00 4/14/2007 47.51 29.70 64.70 4/15/2007 54.83 40.10 71.20 4/16/2007 49.85 39.50 60.20 4/17/2007 49.22 36.00 62.60 4/18/2007 54.80 42.00 68.10 4/19/2007 46.50 37.80 53.80 4/20/2007 48.85 37.30 61.30 4/21/2007 49.04 41.70 58.30 4/22/2007 51.90 39.90 63.00 4/23/2007 50.47 39.00 63.00 4/24/2007 49.99 39.50 61.70 4/25/2007 53.98 36.60 70.20 4/26/2007 51.33 41.50 62.80 4/27/2007 53.46 37.90 66.70 4/28/2007 62.66 41.60 80.30 4/29/2007 62.96 51.20 73.30 4/30/2007 58.12 44.70 67.00 5/1/2007 50.74 37.50 63.80 5/2/2007 59.94 46.60 74.10 5/3/2007 63.85 55.00 74.60 5/4/2007 55.28 45.20 65.60 5/5/2007 49.32 46.70 51.30 Day Barometric Pressure in Hg Ave Min Max 27.16 27.09 27.21 27.27 27.21 27.33 27.27 27.20 27.34 27.08 26.94 27.20 26.83 26.79 26.91 27.08 26.81 27.26 27.25 27.22 27.31 27.39 27.31 27.47 27.46 27.35 27.50 27.19 27.12 27.33 27.14 27.08 27.20 27.10 27.03 27.18 27.08 26.97 27.18 26.82 26.70 26.94 26.79 26.63 27.03 27.18 27.04 27.34 27.39 27.23 27.48 26.96 26.85 27.20 27.08 26.94 27.14 26.78 26.64 27.04 26.88 26.67 27.21 27.21 26.99 27.31 26.88 26.81 27.06 27.29 27.11 27.36 27.37 27.32 27.47 27.49 27.25 27.60 27.11 27.06 27.22 27.10 27.00 27.16 27.17 27.00 27.31 27.08 26.89 27.27 27.11 27.05 27.20 27.27 27.21 27.31 27.37 27.31 27.42 27.10 26.91 27.34 27.01 26.87 27.20 27.26 27.21 27.35 27.12 27.04 27.05 26.97 27.18 27.34 27.32 27.29 27.50 27.50 27.52 27.28 27.12 27.33 27.09 27.21 27.46 27.40 27.20 26.98 27.31 26.91 27.06 27.08 27.14 27.18 26.95 27.21 27.17 27.05 27.53 27.43 27.08 26.98 27.15 27.48 27.65 27.65 27.72 27.56 27.28 27.00 26.81 27.05 27.22 27.30 27.15 27.06 27.30 27.24 27.02 26.90 27.04 27.06 27.13 27.28 27.35 27.23 27.07 27.17 27.18 27.20 27.14 27.32 27.10 26.88 26.95 26.99 27.12 26.92 26.81 26.85 27.11 27.30 27.06 27.04 27.46 27.44 27.49 27.12 27.08 27.24 27.05 27.15 27.23 27.28 27.04 26.86 27.20 26.76 26.83 27.04 27.09 27.07 26.90 26.95 27.02 27.00 27.27 27.25 26.95 26.89 27.11 27.31 27.62 27.63 27.67 27.44 27.14 26.85 26.75 26.93 27.16 27.25 27.07 27.04 27.16 27.14 26.92 26.84 26.89 27.04 27.09 27.20 27.32 27.12 27.04 27.12 27.10 27.10 26.99 27.25 26.97 26.80 26.77 26.90 27.12 27.13 27.21 27.10 27.31 27.37 27.42 27.48 27.57 27.55 27.56 27.48 27.22 27.48 27.17 27.26 27.56 27.51 27.28 27.26 27.40 27.16 27.17 27.15 27.23 27.24 27.05 27.33 27.33 27.23 27.64 27.61 27.24 27.12 27.30 27.61 27.68 27.67 27.76 27.67 27.43 27.13 26.93 27.17 27.28 27.36 27.24 27.13 27.37 27.31 27.14 26.97 27.11 27.08 27.19 27.35 27.39 27.32 27.12 27.24 27.24 27.29 27.29 27.38 27.25 26.97 27.06 27.06 Relative Humidity % Ave Min Max 66.48 54.00 72.90 63.06 31.00 83.30 55.74 34.00 72.90 64.33 41.10 81.70 53.74 17.40 82.20 75.13 66.90 85.30 61.68 47.80 74.80 68.97 61.50 80.60 64.08 42.70 78.10 60.16 51.30 71.20 58.94 33.20 76.70 71.40 32.20 89.70 70.58 47.60 85.90 64.16 37.10 81.30 53.43 29.80 80.00 77.15 65.10 84.20 76.78 62.40 88.00 71.79 52.80 88.60 65.85 34.10 86.20 54.71 31.40 73.10 56.36 42.90 72.00 60.84 35.30 79.50 60.82 50.30 73.80 41.67 20.20 58.00 46.01 30.50 58.50 48.42 20.40 72.00 39.89 26.80 57.90 55.88 36.40 68.50 55.30 35.10 70.90 62.26 50.50 75.10 48.95 18.10 75.40 66.46 50.80 79.50 66.58 52.70 75.10 81.24 74.20 85.60 75.13 64.10 85.80 64.42 61.30 66.80 56.00 66.94 66.82 57.35 61.55 61.77 74.89 77.16 69.68 67.37 56.71 70.71 75.76 76.24 67.40 72.97 76.82 69.73 75.75 65.77 58.20 45.93 44.36 46.62 48.92 47.17 50.53 54.87 56.13 87.73 80.99 80.82 79.07 81.91 84.74 76.07 72.05 70.00 64.43 56.18 53.39 64.55 86.31 84.56 76.60 59.91 45.96 43.08 45.03 41.53 48.24 69.46 55.22 63.08 50.45 55.56 65.09 54.98 64.00 54.23 41.72 38.40 53.49 51.58 45.24 45.46 63.73 85.05 56.00 60.50 54.30 49.40 45.80 43.20 68.20 69.40 61.30 54.10 40.70 61.80 63.70 70.90 63.60 40.60 60.60 46.90 56.90 30.70 37.90 16.20 28.00 25.50 31.80 20.80 18.00 29.90 26.70 62.50 68.70 56.80 64.80 70.40 73.40 60.70 55.60 53.20 45.50 41.00 33.60 51.80 80.00 75.30 55.10 29.70 21.50 22.90 16.00 19.50 38.30 43.80 27.70 53.00 25.80 30.70 42.60 27.00 44.40 25.30 17.40 23.70 27.50 30.40 33.80 22.20 33.80 66.90 56.00 72.50 79.70 64.80 68.80 70.90 81.80 84.20 74.50 74.50 70.90 83.50 83.40 79.80 73.60 91.10 90.10 83.80 86.50 83.10 78.40 72.30 55.90 69.30 61.90 70.30 88.50 84.60 78.70 93.50 89.50 88.70 89.30 87.30 89.80 85.60 85.30 82.60 84.20 68.50 70.30 86.50 89.40 89.70 89.70 84.00 74.20 64.10 78.70 72.90 63.60 87.20 87.00 78.70 76.90 72.90 82.90 85.60 82.80 89.80 73.70 55.20 68.80 71.70 59.20 87.60 89.40 93.30 Wind Speed mph Ave Min Max 9.13 8.10 10.70 10.27 7.40 12.70 11.33 6.20 17.00 7.05 3.00 14.60 13.63 6.00 22.20 18.96 15.20 22.40 14.45 10.50 16.80 14.61 6.80 19.70 7.16 2.90 10.20 10.93 5.50 14.50 9.08 4.40 13.20 11.91 7.60 21.40 11.13 6.90 15.80 12.60 7.10 23.20 16.99 8.00 26.20 6.65 3.70 8.90 8.92 4.00 16.80 12.30 6.40 17.40 10.76 7.00 15.40 13.86 7.80 25.50 10.85 3.60 15.60 8.94 4.90 16.80 12.08 5.50 18.30 8.40 2.00 14.60 7.64 4.00 10.80 10.92 6.40 21.80 11.39 0.00 19.10 8.28 3.40 13.50 9.92 2.90 15.90 13.87 5.90 19.20 12.19 0.00 22.60 7.61 4.20 11.00 6.38 2.50 13.80 13.38 1.00 19.30 10.79 1.00 22.20 21.49 18.10 25.30 19.10 13.21 18.65 17.78 12.10 6.21 9.53 11.39 4.61 5.26 5.46 4.38 7.58 13.74 5.96 9.38 7.91 8.25 10.85 16.84 9.06 10.70 12.58 11.15 10.28 10.98 8.81 9.32 18.94 13.77 25.23 7.86 6.26 10.05 11.50 8.90 6.05 4.90 9.82 5.73 10.13 16.53 12.79 12.97 4.28 8.22 10.13 10.67 11.32 16.40 24.37 21.76 15.73 8.78 8.87 6.62 6.63 11.41 11.83 13.01 13.31 10.57 13.15 9.57 24.06 31.44 13.55 17.83 19.10 9.20 13.10 10.30 8.60 2.50 7.60 4.10 1.50 2.50 2.30 1.40 1.80 12.00 3.20 1.00 2.00 2.10 5.20 10.40 3.30 3.20 4.30 3.90 5.00 1.70 4.20 5.60 7.30 6.10 21.60 1.00 3.00 4.80 4.90 5.80 3.60 2.30 6.30 2.90 3.40 8.30 9.60 5.20 1.60 2.80 7.50 7.80 4.60 4.80 12.90 11.20 4.40 4.40 3.60 2.20 2.60 6.10 7.40 7.40 5.60 6.40 2.80 2.90 10.40 25.30 4.40 7.50 19.10 18.20 22.40 23.40 17.90 9.60 13.30 17.50 7.80 9.20 8.20 10.40 13.90 15.60 8.50 19.70 14.50 13.50 18.70 26.40 16.50 16.20 19.80 17.60 16.70 22.50 13.00 15.70 30.10 25.60 29.10 21.90 13.00 14.50 18.30 14.90 8.20 8.00 14.10 8.20 16.10 22.20 17.20 16.20 5.90 12.70 13.90 14.40 17.10 24.50 36.20 29.10 29.90 16.00 13.30 17.40 11.70 19.60 18.90 19.70 22.70 15.10 20.40 15.60 30.20 36.90 26.50 25.30 Wind Direction compass deg Ave Min Max 313.50 287.60 347.70 267.27 223.70 301.60 275.66 220.80 303.80 236.14 56.90 315.20 188.82 17.30 348.80 245.91 3.30 354.90 265.13 246.10 283.00 287.14 256.20 312.70 191.42 11.90 321.00 143.11 89.60 183.80 236.78 173.60 308.00 232.55 212.60 273.80 231.98 207.80 267.50 239.61 218.50 271.10 273.22 213.60 318.30 139.03 10.50 354.10 126.53 41.10 190.30 206.98 168.20 261.30 259.44 219.70 287.00 211.65 177.30 243.90 281.74 223.00 325.50 237.19 186.20 310.80 227.51 174.20 326.10 252.53 2.30 339.80 245.26 182.40 317.60 216.67 166.70 272.10 208.58 0.00 301.60 203.59 125.20 290.90 249.43 145.40 305.40 155.70 66.20 276.00 228.39 0.00 344.10 94.18 6.90 354.70 51.82 1.00 102.00 112.16 103.20 124.40 258.62 91.30 343.00 269.82 255.50 281.30 271.50 264.55 297.33 290.30 282.55 185.05 123.63 316.32 111.54 119.28 229.70 214.01 128.28 63.19 98.31 180.30 254.08 145.33 138.52 265.25 187.63 193.98 296.33 245.13 246.18 204.15 240.50 269.62 116.96 131.75 82.13 70.83 156.63 289.38 85.04 174.33 95.08 107.71 244.79 110.79 163.63 124.00 82.67 56.79 198.50 240.25 200.08 223.75 166.88 163.96 140.88 132.75 193.83 110.83 262.38 150.88 218.00 218.88 256.42 275.08 253.46 162.13 238.04 175.63 139.71 154.13 189.92 37.21 271.50 235.60 238.80 245.70 262.00 64.70 58.70 204.50 3.30 4.00 6.90 66.50 6.70 57.70 12.70 5.10 96.60 54.10 105.30 186.50 26.80 127.00 231.40 202.90 207.50 124.50 208.60 23.60 74.40 16.00 1.00 41.00 8.00 245.00 3.00 10.00 7.00 16.00 2.00 13.00 123.00 108.00 61.00 12.00 10.00 175.00 165.00 176.00 0.00 129.00 121.00 106.00 19.00 3.00 0.00 7.00 184.00 202.00 207.00 241.00 226.00 8.00 12.00 68.00 99.00 141.00 5.00 1.00 271.50 294.60 342.10 321.40 299.80 290.00 185.70 353.80 358.50 354.00 352.70 300.80 319.50 75.40 352.10 338.90 338.10 275.40 171.00 346.20 350.30 258.60 329.10 289.60 298.80 239.00 295.30 355.80 135.00 345.00 356.00 124.00 337.00 314.00 338.00 355.00 328.00 281.00 358.00 357.00 223.00 143.00 109.00 91.00 349.00 280.00 228.00 344.00 352.00 205.00 153.00 205.00 317.00 356.00 355.00 352.00 268.00 248.00 317.00 298.00 289.00 358.00 339.00 335.00 154.00 163.00 307.00 358.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 6.78 5.60 9.40 No Data No Data 6.87 3.30 12.50 No Data 7.18 3.20 11.90 No Data 13.58 4.10 39.00 No Data 6.48 3.00 16.60 No Data 7.18 5.00 9.40 No Data 6.71 5.00 8.40 No Data 7.42 4.90 9.30 No Data 10.11 4.70 35.90 No Data 6.87 5.00 9.30 No Data 5.65 2.50 11.30 No Data 4.88 3.10 7.70 No Data 5.13 3.00 8.40 No Data 5.53 2.60 8.80 No Data 7.30 3.90 10.00 No Data 11.67 4.40 38.80 No Data 7.30 4.90 15.60 No Data 6.25 4.10 8.30 No Data 6.08 3.30 9.50 No Data 5.27 3.30 9.50 No Data 7.50 3.30 12.00 No Data 9.73 4.70 32.70 No Data 7.17 4.80 21.60 No Data 11.67 4.00 32.40 No Data 6.94 3.00 18.50 No Data 7.18 4.60 16.70 No Data 6.41 3.60 14.30 No Data 6.84 3.30 20.30 No Data 8.65 3.60 21.70 No Data 7.32 4.80 14.70 No Data 5.85 3.20 11.50 No Data 10.48 4.30 33.40 No Data 10.32 4.40 22.10 No Data 6.68 5.20 9.00 No Data 6.88 3.50 10.80 No Data 6.38 5.30 7.30 7.50 6.78 6.85 6.84 6.98 10.37 6.71 8.82 14.70 11.62 9.63 12.77 10.95 4.81 13.70 7.63 12.12 9.60 7.43 6.64 11.40 8.38 8.33 7.68 6.47 7.16 7.73 10.83 7.95 7.83 6.30 8.39 11.81 7.05 5.69 6.25 9.14 10.91 8.11 15.54 7.88 7.02 4.79 3.99 13.50 7.70 8.16 7.86 10.37 7.80 7.09 6.63 8.21 10.00 9.83 18.07 13.23 7.87 6.86 7.67 6.98 11.25 15.42 13.34 7.13 6.56 12.91 5.68 7.50 5.20 5.50 5.30 5.70 4.60 4.80 4.90 5.10 4.30 3.00 4.20 5.50 4.20 3.80 3.50 3.80 4.00 5.60 4.20 5.60 4.70 5.60 3.50 3.00 3.00 3.30 4.30 5.80 5.40 4.60 4.30 4.50 3.30 4.10 3.60 3.20 3.40 3.10 3.40 3.10 5.80 4.00 3.20 3.70 2.60 3.10 3.00 3.90 5.20 6.00 5.00 3.70 4.40 3.90 3.10 2.80 2.80 2.60 4.20 2.40 5.60 4.20 3.20 5.50 5.50 3.60 4.80 7.50 8.60 8.40 8.40 9.50 33.00 10.60 18.00 40.70 31.30 21.10 38.20 32.00 5.30 40.80 19.30 53.50 25.30 11.00 8.70 36.20 17.10 12.80 21.30 12.10 27.10 17.70 20.40 17.40 12.10 11.40 28.40 33.00 9.90 12.50 9.20 45.00 24.60 13.30 35.20 13.50 8.60 6.10 4.70 29.90 14.40 17.40 20.00 24.10 17.40 8.70 10.00 18.70 26.10 21.80 54.40 44.10 21.50 12.00 12.70 18.50 24.10 49.90 35.80 9.10 8.10 46.50 8.30 No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data No Data 270 61.00 908 122.00 3392 670.00 4301 589.00 2083 394.00 1165 168.00 4989 778.00 5910 799.00 4505 738.00 5870 811.00 6237 798.00 6151 794.00 4362 650.00 3190 484.00 4107 654.00 5234 772.00 6578 824.00 6519 816.00 4769 661.00 6501 830.00 6568 819.00 5475 765.00 1746 400.00 6035 807.00 3287 538.00 6671 846.00 5070 837.00 4850 913.00 6439 815.00 4484 694.00 6689 798.00 6540 850.00 6528 815.00 6436 821.00 6193 788.00 6800 838.00 6767 830.00 6678 865.00 566 86.00 Rain in Method

Daily Sum

0.00

Tipping Bucket

0.00 0.00 0.53 0.00 0.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.02 0.07 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.05 0.10 0.00 0.00 0.08 0.08 0.55

Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket

Revision 1
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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 52.18 45.70 55.50 57.24 43.30 70.00 61.88 46.00 75.80 66.87 49.30 82.90 52.17 44.30 60.10 55.47 46.80 66.70 57.51 44.10 71.70 68.03 54.20 82.60 50.25 43.30 55.30 50.15 38.10 59.80 53.56 39.30 64.60 62.39 46.10 79.30 69.93 52.80 86.50 46.38 40.50 62.20 52.36 46.20 59.30 60.77 50.80 74.90 51.54 47.40 55.80 44.74 37.90 47.10 46.84 37.20 59.30 44.21 39.00 49.70 47.95 38.00 59.00 54.13 38.30 67.50 60.56 50.80 70.80 57.68 53.30 63.70 49.25 46.20 52.10 51.32 45.80 56.80 55.07 49.70 61.20 61.72 49.80 72.70 65.81 54.50 77.80 62.60 57.10 68.60 62.62 46.20 73.90 65.54 55.50 75.00 50.13 43.90 56.20 56.15 39.30 70.10 64.49 50.60 75.80 69.33 53.40 83.00 74.49 61.20 85.40 63.93 58.90 69.30 66.35 54.90 78.90 65.85 57.20 76.50 61.10 56.60 67.20 63.08 52.40 72.50 63.43 53.80 76.70 54.17 48.10 62.90 62.07 45.00 75.10 69.08 51.60 83.50 70.26 62.60 78.40 73.03 58.90 87.70 76.74 62.50 87.90 73.58 66.50 80.60 70.03 60.20 81.20 62.56 49.30 73.10 60.76 49.50 72.40 60.01 41.90 75.60 73.51 56.60 90.40 74.63 62.20 88.90 73.72 62.20 84.80 73.31 61.10 87.10 72.05 60.70 85.00 74.89 59.70 88.20 72.38 62.00 83.20 75.65 56.60 93.60 81.00 64.00 99.40 66.21 60.60 71.20 65.62 53.60 79.20 59.07 52.80 67.80 63.59 47.70 76.20 68.28 53.60 80.70 74.02 54.80 90.50 76.58 63.20 89.00 77.98 61.90 93.30 77.51 61.10 95.70 75.00 65.50 90.90 73.39 66.20 84.20 72.24 60.70 83.60 76.81 62.60 90.60 84.06 70.50 102.90 84.04 68.80 97.30 88.30 72.10 107.50 89.65 72.90 105.20 80.49 72.30 87.60 73.59 62.90 84.60 70.88 58.60 82.90 74.83 56.50 91.30 81.63 62.70 97.10 82.33 62.40 98.80 87.35 67.80 104.00 73.37 61.40 85.50 73.98 59.20 88.00 76.61 59.10 92.30 77.05 65.60 94.70 75.83 65.10 87.50 70.90 59.10 84.70 73.60 58.90 96.50 74.49 61.60 87.30 77.52 56.10 96.70 75.62 65.10 91.40 67.23 53.90 76.60 65.86 50.60 85.00 77.30 65.50 92.20 68.72 58.80 79.50 68.83 53.80 84.80 66.35 49.20 82.10 58.92 54.80 61.30 60.62 56.10 69.80 60.80 57.50 67.60 67.12 57.70 76.70 Barometric Pressure in Hg Ave Min Max 26.98 26.88 27.19 27.24 27.21 27.29 27.22 27.16 27.28 27.11 27.04 27.19 27.37 27.21 27.45 27.37 27.33 27.42 27.28 27.13 27.39 27.04 26.96 27.10 27.27 27.00 27.48 27.48 27.44 27.51 27.45 27.36 27.49 27.20 27.10 27.35 27.08 27.05 27.13 27.27 27.15 27.33 27.09 26.97 27.27 26.84 26.78 26.93 26.92 26.85 27.01 27.03 26.95 27.21 27.33 27.22 27.36 27.25 27.20 27.36 27.33 27.29 27.37 27.18 27.04 27.29 26.99 26.93 27.08 27.17 27.06 27.26 27.22 27.09 27.27 26.95 26.86 27.08 27.13 27.08 27.17 27.20 27.17 27.22 27.23 27.21 27.26 27.24 27.19 27.29 26.99 26.73 27.22 26.53 26.43 26.71 26.78 26.43 27.11 27.12 27.09 27.13 27.12 27.10 27.14 27.03 26.97 27.11 27.02 26.97 27.08 27.20 27.10 27.28 27.30 27.26 27.34 27.18 27.12 27.28 27.25 27.18 27.31 27.24 27.04 27.32 26.90 26.82 27.00 26.97 26.87 27.13 27.24 27.15 27.29 27.28 27.24 27.31 27.26 27.22 27.30 27.20 27.13 27.26 27.01 26.91 27.13 26.99 26.94 27.04 27.05 26.90 27.22 27.41 27.28 27.47 27.49 27.46 27.53 27.41 27.30 27.50 27.22 27.13 27.31 27.14 27.13 27.17 27.21 27.17 27.25 27.25 27.22 27.28 27.30 27.22 27.36 27.36 27.31 27.39 27.44 27.41 27.48 27.27 27.10 27.43 27.02 26.97 27.10 27.18 27.09 27.25 27.15 27.00 27.25 27.35 27.23 27.42 27.37 27.31 27.42 27.35 27.33 27.38 27.28 27.20 27.38 27.25 27.22 27.29 27.16 27.09 27.25 27.12 27.09 27.15 27.15 27.13 27.19 27.23 27.17 27.29 27.31 27.23 27.38 27.18 27.12 27.24 27.09 27.05 27.14 27.24 27.15 27.29 27.21 27.13 27.28 27.08 26.99 27.15 27.08 27.00 27.19 27.30 27.20 27.35 27.35 27.30 27.38 27.25 27.17 27.31 27.17 27.13 27.20 27.13 27.08 27.16 27.05 26.99 27.10 27.31 27.11 27.40 27.36 27.29 27.42 27.18 27.08 27.29 27.10 27.05 27.14 27.11 27.06 27.15 27.08 27.01 27.16 27.03 26.93 27.10 27.04 27.00 27.11 27.15 27.10 27.19 27.10 26.99 27.17 27.29 27.09 27.46 27.36 27.24 27.48 27.20 27.13 27.28 27.27 27.17 27.34 27.22 27.15 27.34 27.36 27.31 27.40 27.32 27.25 27.39 27.19 27.14 27.23 27.13 27.04 27.19 27.02 26.95 27.11 Relative Humidity % Ave Min Max 88.87 75.60 93.70 56.09 29.90 85.00 54.98 30.90 78.50 50.85 23.80 79.40 59.55 43.80 78.70 70.09 56.80 83.50 67.49 44.30 88.40 62.35 35.10 83.70 81.95 65.60 90.90 66.39 43.50 89.10 52.30 31.80 77.60 55.52 39.30 69.80 53.33 28.70 82.00 84.80 60.30 92.50 90.17 85.90 92.30 79.97 54.90 93.10 88.41 82.30 90.90 83.61 70.70 91.70 63.14 38.00 81.20 79.95 71.00 89.30 62.33 36.00 89.40 63.39 51.10 82.00 78.11 59.40 92.80 73.50 57.20 86.70 87.48 83.70 90.80 87.49 75.50 92.20 85.54 79.00 91.20 72.78 49.60 90.80 67.01 43.40 86.40 67.45 47.10 81.20 67.75 50.00 87.20 75.26 61.00 90.30 69.97 46.00 91.70 63.50 40.20 84.60 61.53 40.20 83.10 62.34 38.30 82.10 66.39 42.80 87.50 80.70 68.70 90.00 69.41 39.60 92.70 68.00 44.60 84.80 71.80 57.30 85.40 68.65 46.40 88.60 79.45 61.50 90.80 67.86 52.70 87.90 58.20 35.80 84.20 55.25 30.90 77.10 72.41 61.90 86.40 69.94 39.70 92.30 60.79 38.90 81.50 74.19 63.80 89.50 77.33 62.40 90.30 48.64 28.20 75.90 61.58 43.00 79.20 70.14 54.00 88.60 57.48 28.90 87.50 55.36 38.50 71.00 64.95 46.40 86.40 71.50 36.60 92.80 63.96 30.30 88.20 57.96 35.70 82.70 54.53 30.00 79.10 56.84 33.10 81.80 53.26 19.80 78.90 77.80 63.70 86.90 71.81 52.60 87.80 64.75 46.60 79.70 57.21 34.10 81.80 58.12 35.20 82.60 53.68 26.90 85.90 48.87 25.90 70.70 50.47 25.30 76.30 55.73 24.40 89.40 71.69 40.30 92.70 74.39 49.20 89.50 62.34 35.70 89.80 53.44 39.90 65.90 55.88 24.60 81.40 55.64 24.60 87.20 49.40 9.60 87.00 30.32 10.80 49.10 54.64 44.90 70.10 54.38 24.40 89.80 51.47 33.20 69.70 47.98 25.90 71.20 41.64 16.40 75.80 40.25 19.20 70.80 37.94 12.20 73.70 42.05 19.00 84.00 34.53 20.00 50.40 49.10 29.80 72.20 58.92 17.00 87.00 44.88 19.10 76.20 57.59 30.90 87.90 56.86 22.60 81.00 50.26 18.80 83.50 39.01 10.60 72.80 52.75 36.50 72.30 53.58 25.90 79.90 59.88 33.20 81.10 52.72 19.30 87.00 58.69 31.60 83.30 49.27 20.40 84.50 48.85 26.10 77.00 78.88 61.60 90.10 86.21 69.60 92.50 86.96 74.10 92.50 60.39 25.90 92.00 Wind Speed mph Ave Min Max 11.41 3.90 19.50 8.80 1.40 11.80 9.23 6.90 15.40 10.99 6.80 16.60 11.15 6.00 16.70 11.15 7.00 14.60 13.25 6.90 20.40 9.95 5.80 16.30 18.68 8.10 32.10 10.23 7.00 14.90 5.52 2.20 14.70 16.32 8.20 21.00 7.97 4.20 11.30 15.25 5.90 19.30 9.36 3.90 13.70 10.04 3.90 17.30 10.71 3.40 15.90 15.10 3.40 24.30 10.38 1.50 16.70 20.77 5.90 28.30 8.74 2.30 20.20 12.78 4.40 17.80 9.72 4.90 14.50 9.70 4.80 14.10 11.13 7.80 15.30 15.38 11.60 22.40 11.30 5.30 15.70 8.33 4.40 11.50 8.48 4.80 14.60 8.80 1.70 13.90 10.90 2.90 17.80 10.45 2.60 23.30 22.58 7.50 30.10 13.24 7.40 21.20 9.00 4.40 15.20 10.49 4.20 17.80 6.70 2.60 12.50 5.50 1.20 17.50 5.95 3.30 9.50 9.56 4.80 15.20 5.57 2.40 9.10 9.80 3.10 16.50 12.10 6.40 20.00 19.73 8.00 33.20 9.93 4.50 16.30 5.82 2.90 10.10 6.54 3.10 9.10 7.87 4.30 11.40 14.13 8.80 25.40 14.56 6.00 19.00 11.96 5.10 22.10 13.49 6.70 19.20 7.31 4.20 13.50 12.53 6.20 15.80 13.81 6.60 23.90 14.34 7.40 22.90 9.47 3.80 14.60 7.57 4.00 13.70 10.99 5.50 22.70 6.06 2.60 8.30 6.77 4.80 11.30 10.88 5.30 18.20 8.95 4.30 15.40 6.85 1.80 13.20 8.90 1.20 17.20 13.28 6.50 16.90 7.51 3.50 10.90 5.73 1.90 8.00 9.00 5.00 14.50 8.16 4.20 12.40 8.67 5.40 13.10 7.41 2.90 12.10 8.48 4.80 15.30 6.44 4.10 9.50 12.66 4.60 18.00 16.16 8.50 22.90 11.67 6.00 17.50 10.28 4.20 16.00 9.57 4.60 15.60 16.10 10.80 23.20 12.87 7.60 19.60 10.46 5.10 17.40 6.84 2.50 11.90 8.65 5.20 14.20 10.43 6.60 14.90 11.84 8.10 16.50 11.05 4.80 16.30 10.66 5.20 17.60 6.52 3.10 9.10 10.95 5.60 19.20 8.31 5.30 11.60 9.50 4.70 15.60 11.83 3.30 17.70 13.97 3.00 26.10 7.72 2.20 12.10 7.44 3.30 10.70 10.39 6.00 14.70 9.81 3.50 14.20 13.37 7.50 22.10 12.11 6.60 19.60 11.16 5.70 18.00 8.40 3.90 14.10 8.65 4.30 13.90 13.61 8.80 20.50 10.67 7.10 13.20 11.82 7.40 15.60 12.25 5.60 18.00 Wind Direction compass deg Ave Min Max 201.25 17.00 342.00 268.54 221.00 335.00 239.71 212.00 266.00 244.21 201.00 353.00 159.58 2.00 356.00 108.04 68.00 134.00 116.79 98.00 149.00 75.13 11.00 228.00 308.92 253.00 347.00 285.13 245.00 340.00 125.25 0.00 333.00 187.71 156.00 204.00 193.13 7.00 336.00 69.83 30.00 128.00 104.96 46.00 165.00 169.04 19.00 344.00 305.25 267.00 353.00 274.13 220.00 340.00 261.04 9.00 332.00 63.42 1.00 350.00 236.50 7.00 355.00 161.88 136.00 196.00 230.54 20.00 342.00 292.50 247.00 325.00 307.42 268.00 336.00 149.25 9.00 355.00 163.04 3.00 360.00 306.21 11.00 349.00 293.67 103.00 353.00 153.00 9.00 348.00 169.08 10.00 234.00 80.08 2.00 277.00 224.13 6.00 357.00 238.67 221.00 252.00 236.54 211.00 252.00 199.42 170.00 227.00 178.58 0.00 326.00 170.21 11.00 342.00 177.67 7.00 335.00 229.71 176.00 337.00 270.21 209.00 328.00 142.58 23.00 345.00 190.67 52.00 323.00 264.67 216.00 306.00 252.21 229.00 294.00 178.67 129.00 247.00 136.17 71.00 183.00 189.71 90.00 222.00 195.00 166.00 346.00 93.92 8.00 348.00 124.13 0.00 352.00 286.54 242.00 320.00 159.42 3.00 343.00 107.67 66.00 139.00 138.04 105.00 161.00 144.42 111.00 172.00 109.75 24.00 333.00 130.75 28.00 359.00 254.79 13.00 350.00 219.54 12.00 344.00 96.08 2.00 350.00 168.63 78.00 207.00 267.42 6.00 360.00 156.13 7.00 360.00 217.29 149.00 339.00 312.79 291.00 337.00 237.50 30.00 331.00 153.29 5.00 355.00 265.79 162.00 355.00 244.67 11.00 352.00 219.79 124.00 280.00 113.79 27.00 238.00 90.71 45.00 131.00 109.04 10.00 332.00 119.29 78.00 143.00 141.79 120.00 164.00 198.92 131.00 319.00 151.88 48.00 322.00 155.79 34.00 220.00 188.71 149.00 221.00 172.42 1.00 357.00 110.13 6.00 352.00 142.79 62.00 192.00 180.83 159.00 203.00 185.50 157.00 222.00 170.25 150.00 202.00 215.88 166.00 331.00 285.88 4.00 357.00 158.83 27.00 350.00 129.29 63.00 176.00 202.88 7.00 349.00 119.88 21.00 341.00 186.83 52.00 357.00 184.71 136.00 234.00 223.25 25.00 331.00 194.00 83.00 242.00 117.71 23.00 358.00 244.46 2.00 347.00 122.21 43.00 167.00 211.46 0.00 356.00 81.83 49.00 132.00 130.04 5.00 359.00 86.79 36.00 125.00 90.04 43.00 115.00 92.75 68.00 108.00 117.63 95.00 145.00 229.75 128.00 298.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 1888 10.98 5.00 48.70 494.00 7356 9.78 3.80 17.60 874.00 6886 7.83 1.70 19.30 841.00 7458 879.00 7.60 2.40 15.60 4800 8.82 4.60 16.10 746.00 6738 10.11 4.90 21.40 858.00 6598 8.20 5.70 14.60 788.00 6809 14.60 4.40 47.30 865.00 2421 9.33 7.10 21.30 434.00 5695 8.62 3.90 19.50 842.00 7370 23.11 5.30 60.10 909.00 7281 868.00 6.60 4.20 10.30 5877 14.50 4.00 46.30 799.00 2622 7.59 5.40 19.80 334.00 1793 10.58 5.60 33.50 282.00 4990 698.00 13.84 6.00 43.70 1581 8.81 7.40 19.50 272.00 3694 8.02 5.30 13.10 443.00 6760 16.37 5.30 56.30 877.00 2077 6.85 5.10 15.90 350.00 7716 14.17 5.70 31.30 914.00 7197 8.44 5.00 14.90 869.00 5418 16.38 6.60 66.60 760.00 4810 9.35 4.50 14.90 653.00 1523 8.19 6.60 10.30 219.00 2779 7.17 5.30 9.50 390.00 3044 8.10 5.30 10.90 588.00 7080 11.59 5.20 42.00 841.00 6894 10.83 5.10 30.20 870.00 5692 9.98 4.10 21.30 782.00 7223 9.22 2.70 34.50 853.00 5299 12.16 5.50 47.80 825.00 5017 8.41 5.10 11.40 888.00 7697 6.27 3.30 9.70 926.00 7046 827.00 9.22 2.80 19.50 7436 6.50 2.90 12.70 898.00 7467 19.98 4.00 58.20 872.00 1827 25.44 8.60 70.30 246.00 7392 892.00 17.55 4.00 51.00 6443 9.83 5.90 32.50 835.00 3610 12.40 5.60 28.20 472.00 6354 13.36 7.40 48.40 872.00 4403 10.84 3.50 31.00 847.00 4167 7.50 4.00 10.90 586.00 7747 8.56 3.20 15.00 907.00 7866 12.14 4.50 30.80 892.00 5412 15.28 5.90 49.00 791.00 6694 10.17 4.10 29.10 874.00 6595 9.78 4.70 37.10 899.00 6766 831.00 11.71 5.60 54.60 5359 14.01 5.50 35.70 816.00 8080 10.09 6.10 16.70 908.00 7883 17.35 3.30 39.70 927.00 7542 9.24 6.10 13.50 860.00 7579 9.10 7.10 11.40 868.00 7149 9.55 6.70 14.30 832.00 6547 12.42 5.70 48.00 787.00 6066 830.00 12.87 5.10 29.50 6979 12.43 5.80 37.30 885.00 7100 13.13 4.60 31.60 890.00 7822 13.32 5.10 36.60 892.00 7707 882.00 8.98 5.50 12.60 7038 12.85 4.20 37.60 877.00 3074 12.89 4.00 44.20 517.00 5060 11.66 4.10 30.70 852.00 6408 9.92 3.20 15.50 754.00 6788 10.28 3.30 19.50 920.00 6539 16.29 2.20 40.70 788.00 7254 10.17 3.50 18.90 866.00 7415 12.59 3.60 24.50 866.00 7353 10.68 4.30 17.50 859.00 5902 18.27 5.70 54.50 835.00 5177 11.85 4.90 20.50 799.00 5006 14.30 5.60 33.80 776.00 7117 9.75 6.10 15.90 841.00 6905 8.88 7.40 10.60 832.00 6650 10.11 6.50 20.40 819.00 6800 14.03 5.30 54.80 810.00 6777 11.51 4.30 26.30 814.00 6813 7.04 3.70 10.80 813.00 5336 797.00 12.24 6.00 35.30 6860 10.37 3.30 23.10 845.00 4009 13.22 5.40 32.50 523.00 6882 11.68 4.90 26.30 829.00 7165 847.00 11.00 3.80 28.90 7130 10.34 4.50 23.40 846.00 6378 12.40 3.90 59.70 789.00 6377 11.52 5.20 20.50 781.00 6006 19.05 5.50 56.80 786.00 5658 9.41 5.50 14.60 763.00 5602 14.56 3.80 39.80 766.00 6108 10.84 4.00 18.80 764.00 5981 11.82 5.70 40.80 819.00 5397 10.81 4.30 43.50 791.00 5851 22.96 8.40 56.20 776.00 5845 14.77 3.40 32.40 796.00 5361 16.30 5.00 41.60 799.00 6645 13.36 6.50 29.30 799.00 6073 9.60 5.70 16.10 791.00 5535 9.81 5.20 16.70 777.00 4622 8.75 5.20 12.20 747.00 6058 14.74 4.50 37.70 764.00 5989 12.30 4.90 22.90 742.00 1513 345.00 9.53 5.70 51.40 2463 8.74 6.90 13.10 472.00 2114 9.02 7.40 12.20 355.00 4987 9.76 6.20 13.50 744.00 Rain in Method Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket

Day 5/6/2007 5/7/2007 5/8/2007 5/9/2007 5/10/2007 5/11/2007 5/12/2007 5/13/2007 5/14/2007 5/15/2007 5/16/2007 5/17/2007 5/18/2007 5/19/2007 5/20/2007 5/21/2007 5/22/2007 5/23/2007 5/24/2007 5/25/2007 5/26/2007 5/27/2007 5/28/2007 5/29/2007 5/30/2007 5/31/2007 6/1/2007 6/2/2007 6/3/2007 6/4/2007 6/5/2007 6/6/2007 6/7/2007 6/8/2007 6/9/2007 6/10/2007 6/11/2007 6/12/2007 6/13/2007 6/14/2007 6/15/2007 6/16/2007 6/17/2007 6/18/2007 6/19/2007 6/20/2007 6/21/2007 6/22/2007 6/23/2007 6/24/2007 6/25/2007 6/26/2007 6/27/2007 6/28/2007 6/29/2007 6/30/2007 7/1/2007 7/2/2007 7/3/2007 7/4/2007 7/5/2007 7/6/2007 7/7/2007 7/8/2007 7/9/2007 7/10/2007 7/11/2007 7/12/2007 7/13/2007 7/14/2007 7/15/2007 7/16/2007 7/17/2007 7/18/2007 7/19/2007 7/20/2007 7/21/2007 7/22/2007 7/23/2007 7/24/2007 7/25/2007 7/26/2007 7/27/2007 7/28/2007 7/29/2007 7/30/2007 7/31/2007 8/1/2007 8/2/2007 8/3/2007 8/4/2007 8/5/2007 8/6/2007 8/7/2007 8/8/2007 8/9/2007 8/10/2007 8/11/2007 8/12/2007 8/13/2007 8/14/2007 8/15/2007 8/16/2007 8/17/2007 8/18/2007 8/19/2007 8/20/2007

Daily Sum 0.50 0.00 0.00 0.00 0.05 0.04 0.00 0.00 0.87 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.13 0.03 0.00 0.21 0.01 0.00 0.05 0.08 0.58 0.40 0.02 0.00 0.00 0.00 0.00 0.00 0.86 0.00 0.00 0.00 0.00 0.36 0.00 0.00 0.01 0.01 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.60 0.00 0.00 0.00 0.00 0.31 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.30 0.16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.16 0.02 0.07 0.00 0.09 0.00 0.00 0.00 0.03 0.00 0.00 0.32 0.06 0.00 0.00

Revision 1
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Golder Assoicates

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 68.62 59.00 78.50 63.92 48.80 73.50 62.10 49.80 72.50 52.40 45.50 58.70 59.37 43.10 76.70 74.29 57.10 93.50 62.92 53.10 72.60 57.45 51.30 69.30 62.58 45.20 76.80 73.04 54.50 92.60 76.25 58.60 92.70 77.68 66.60 91.00 69.50 54.60 81.70 78.53 58.10 100.40 75.05 58.90 92.20 69.78 56.80 77.40 56.85 52.80 61.90 59.74 48.20 72.30 50.20 45.20 57.70 49.94 40.00 62.20 56.30 39.80 72.10 54.98 43.30 68.10 60.88 45.20 84.90 43.87 39.10 47.80 44.89 28.50 61.50 58.47 35.00 78.90 66.90 46.50 88.40 67.35 56.30 82.00 52.82 48.00 62.20 52.38 39.40 63.20 58.87 46.30 71.20 53.12 45.20 62.10 64.38 41.20 90.50 62.83 55.90 73.50 47.43 43.20 57.10 48.39 30.30 63.90 54.87 45.40 64.50 52.93 42.60 65.00 61.37 47.00 79.40 63.53 52.20 82.30 50.70 41.00 62.10 59.62 42.60 79.20 55.58 42.50 64.30 54.08 40.00 70.60 49.80 43.40 54.70 47.19 43.40 50.50 43.35 40.90 46.50 43.86 35.30 52.90 48.54 33.50 65.60 44.69 38.00 54.90 38.36 29.40 48.50 45.26 35.40 61.80 49.36 41.60 61.40 45.38 36.40 54.90 43.78 36.40 54.60 41.65 29.50 55.10 41.71 36.90 45.00 43.94 42.30 45.90 44.34 39.00 48.20 46.15 30.70 63.40 48.30 39.40 51.70 40.50 31.40 50.60 41.93 29.50 56.60 53.48 43.50 63.80 56.31 39.30 78.50 55.05 38.60 72.80 40.05 33.40 49.20 33.74 20.40 45.10 46.00 30.70 66.40 51.97 36.80 72.10 44.68 35.10 58.30 37.48 25.40 52.80 43.04 31.40 55.40 35.95 24.70 45.20 39.18 23.20 53.30 45.28 34.30 61.80 29.36 21.00 35.70 27.40 10.80 41.90 39.15 30.10 47.40 41.08 34.20 53.60 35.13 28.20 41.60 46.43 26.80 65.10 45.47 35.90 54.70 43.17 27.70 56.30 51.15 39.90 61.30 33.73 26.30 38.70 33.55 16.40 51.40 45.35 37.60 56.50 30.44 24.30 39.50 43.26 30.50 57.40 36.25 33.60 39.50 26.97 20.60 32.00 21.53 10.40 33.80 20.71 14.30 30.30 23.61 20.60 27.00 25.81 10.70 42.70 35.18 26.90 40.60 19.46 3.60 36.90 9.00 2.30 18.90 11.02 1.60 20.80 4.34 -2.20 11.60 8.85 -3.70 22.20 13.35 6.00 16.80 8.91 -6.50 26.80 31.00 18.60 45.30 35.22 10.80 53.10 15.47 8.90 24.60 Barometric Pressure in Hg Ave Min Max 27.13 27.09 27.16 27.19 27.16 27.22 27.20 27.18 27.23 27.26 27.21 27.31 27.18 27.03 27.31 26.97 26.95 27.03 27.14 27.03 27.26 27.37 27.24 27.47 27.47 27.41 27.52 27.35 27.29 27.42 27.24 27.15 27.31 27.14 27.06 27.25 27.31 27.22 27.39 27.15 27.10 27.22 27.05 26.91 27.16 26.99 26.87 27.13 27.11 27.08 27.16 27.26 27.18 27.32 27.43 27.25 27.54 27.52 27.46 27.55 27.39 27.29 27.49 27.37 27.24 27.45 27.08 26.97 27.22 27.34 27.24 27.44 27.45 27.33 27.53 27.20 27.14 27.32 27.01 26.87 27.17 26.94 26.88 27.06 27.21 27.08 27.31 27.34 27.25 27.40 27.01 26.91 27.22 27.09 26.93 27.16 27.00 26.90 27.13 26.88 26.85 26.94 27.16 26.91 27.34 27.25 27.16 27.34 27.15 27.13 27.17 27.29 27.18 27.39 26.98 26.80 27.22 26.80 26.72 27.01 27.23 27.09 27.29 27.05 26.88 27.24 27.04 26.93 27.11 26.93 26.85 27.01 27.15 27.03 27.22 27.10 27.05 27.19 27.04 26.95 27.18 27.24 27.16 27.29 27.16 27.11 27.28 27.47 27.31 27.55 27.41 27.26 27.52 27.19 27.16 27.24 27.18 27.13 27.22 27.20 27.15 27.28 27.32 27.29 27.36 27.27 27.16 27.34 27.02 26.89 27.15 26.78 26.72 26.88 26.84 26.77 26.89 26.80 26.73 26.89 26.83 26.74 26.97 27.27 26.99 27.46 27.36 27.23 27.46 27.36 27.22 27.50 27.33 27.13 27.50 27.19 27.07 27.38 27.53 27.40 27.59 27.62 27.51 27.70 27.39 27.35 27.49 27.27 27.15 27.40 27.14 27.02 27.35 27.38 27.28 27.45 27.12 27.04 27.26 27.37 27.24 27.42 27.23 27.18 27.35 27.07 26.95 27.26 27.48 27.29 27.59 27.45 27.20 27.60 27.17 27.12 27.21 27.15 27.09 27.23 27.25 27.08 27.35 26.92 26.80 27.04 27.04 26.79 27.23 27.16 26.79 27.32 26.85 26.69 27.05 27.32 27.05 27.47 27.18 26.95 27.45 26.98 26.96 27.03 27.11 27.03 27.17 27.00 26.95 27.06 27.13 27.05 27.25 27.39 27.26 27.51 27.56 27.52 27.60 27.50 27.38 27.56 27.27 27.23 27.36 27.07 26.89 27.23 27.04 26.88 27.24 27.33 27.23 27.44 27.16 27.00 27.42 27.24 27.05 27.33 27.33 27.28 27.46 27.38 27.22 27.49 27.05 26.94 27.20 27.24 27.11 27.32 27.20 27.15 27.24 27.10 26.98 27.33 27.23 27.00 27.39 Relative Humidity % Ave Min Max 39.56 23.20 63.10 45.65 30.80 69.50 46.52 26.30 73.80 71.40 56.80 83.20 68.41 39.20 91.20 46.34 9.80 86.90 67.02 47.80 88.60 67.47 46.10 80.70 55.69 33.30 80.90 49.55 14.10 85.00 52.58 21.80 84.80 47.63 16.30 85.10 49.10 30.90 72.50 50.01 13.20 88.70 62.41 33.10 91.60 56.06 27.60 85.60 72.78 59.20 88.30 59.28 26.00 87.30 77.68 55.10 89.40 69.26 35.90 87.70 59.22 28.00 87.80 56.65 36.60 76.40 52.74 20.20 75.70 54.33 45.20 68.40 50.63 18.30 82.50 38.54 16.00 71.20 44.67 18.90 73.30 36.45 14.90 66.40 66.23 40.10 85.90 60.13 37.60 85.00 63.49 42.70 89.70 62.00 41.00 87.40 41.48 11.70 75.90 55.57 36.60 80.20 80.48 67.00 86.50 59.58 29.20 88.20 49.79 32.90 66.80 47.00 25.00 70.90 38.49 18.40 60.10 38.09 15.10 60.80 55.43 29.50 80.30 38.04 15.30 60.60 37.47 22.90 50.40 40.81 20.20 54.30 52.80 42.70 64.80 68.83 55.50 91.60 87.71 78.90 91.70 74.03 52.60 88.70 67.83 40.20 89.10 75.98 55.50 90.60 78.45 57.10 89.50 70.03 45.20 84.00 62.50 31.70 80.20 68.02 40.80 88.20 77.50 50.90 91.10 67.13 33.80 90.20 77.62 62.80 89.30 89.90 86.10 91.50 84.21 69.80 91.60 59.50 30.60 83.70 48.37 38.30 70.20 62.38 37.50 80.80 56.18 32.20 81.10 52.68 37.90 69.60 48.44 15.50 77.80 46.46 24.80 65.40 53.36 41.60 66.70 55.49 26.60 82.50 42.26 13.30 67.70 36.49 13.60 58.00 52.20 33.00 70.40 50.66 22.50 71.70 44.46 18.60 60.20 53.82 32.90 78.10 43.57 21.60 81.20 46.33 28.40 60.10 57.50 46.00 67.10 55.12 26.90 77.30 52.38 44.40 62.90 67.79 50.80 83.20 67.85 47.00 79.60 51.33 17.80 81.70 42.06 24.50 67.60 46.70 22.80 84.80 23.77 17.30 37.70 46.25 38.10 55.60 38.62 13.90 64.70 43.71 30.00 64.10 78.98 62.40 88.00 56.19 19.90 85.50 66.56 51.80 79.30 63.43 50.20 74.50 68.17 43.00 82.50 69.35 44.30 80.80 71.23 63.00 79.30 61.43 33.60 82.20 55.53 44.70 75.00 67.94 47.10 81.80 52.37 39.70 66.60 65.62 56.00 78.80 65.04 54.70 71.00 49.41 26.50 69.50 65.76 51.00 78.40 69.25 52.10 77.30 62.95 48.80 75.20 71.27 55.60 83.00 77.91 73.10 85.70 Wind Speed mph Ave Min Max 10.66 5.20 17.20 9.42 6.40 11.90 7.50 4.90 11.00 4.70 2.80 6.10 11.97 4.80 18.80 10.29 7.00 15.70 13.90 7.70 22.20 8.46 3.20 14.50 8.10 1.90 14.00 8.42 3.10 14.70 11.48 3.80 21.40 9.60 4.90 15.20 11.33 5.70 17.50 7.77 3.90 15.30 11.12 7.30 18.40 13.54 5.50 28.10 4.55 1.80 7.30 8.33 3.80 16.30 10.89 3.30 18.70 7.34 3.30 15.20 13.86 8.20 21.90 8.01 2.90 12.50 11.90 7.30 17.00 15.43 5.90 21.00 6.73 2.60 10.30 6.40 2.30 10.90 10.85 5.80 18.10 9.27 5.80 13.50 8.33 3.60 13.50 11.42 2.80 20.50 7.93 1.80 13.40 12.95 5.00 17.60 9.65 4.00 13.50 7.89 3.40 14.60 14.26 7.30 18.70 10.06 4.40 18.10 10.80 5.20 14.60 8.18 4.60 11.50 10.09 4.80 16.20 12.82 3.90 19.20 10.02 3.20 16.30 9.96 2.80 14.30 14.25 6.90 18.20 12.28 6.30 18.20 6.82 4.10 11.70 15.85 10.10 20.40 12.02 6.40 17.60 5.28 1.20 9.60 10.97 5.50 20.70 7.42 5.10 9.50 12.40 5.50 18.30 10.05 4.30 20.00 7.13 2.40 11.50 6.97 4.30 11.70 5.21 2.90 8.90 7.32 1.70 15.10 7.86 4.00 12.40 7.94 3.30 11.90 12.13 6.00 17.10 10.33 6.80 13.60 10.20 6.30 14.10 11.53 7.30 16.30 11.47 7.00 18.50 11.95 3.70 17.80 12.05 3.80 16.70 11.94 9.10 15.20 8.45 5.90 12.20 7.10 3.90 12.20 12.78 6.60 18.20 9.42 5.90 13.40 12.19 5.90 24.20 11.13 6.40 14.20 12.95 8.00 18.40 14.30 6.20 22.60 12.47 7.30 19.20 14.25 8.20 24.90 15.19 5.60 21.10 10.54 3.50 18.60 8.84 2.30 15.60 6.25 2.50 11.60 9.57 4.40 13.50 9.95 4.60 15.50 11.71 6.90 18.50 16.49 9.00 25.80 22.24 15.30 28.40 19.74 9.30 27.30 11.40 6.50 21.50 9.22 5.60 13.60 9.29 5.50 15.10 14.81 6.80 22.30 7.25 4.60 11.30 6.44 3.40 10.20 4.92 1.40 9.50 9.19 6.40 12.00 11.63 9.10 14.80 12.10 7.30 19.80 14.10 6.60 21.90 11.63 3.70 21.30 13.73 4.00 20.50 15.49 7.30 20.70 9.40 4.50 14.50 10.10 3.20 17.20 9.40 6.10 14.40 8.96 3.90 14.50 9.15 3.50 12.60 13.79 9.10 20.20 10.20 6.00 15.10 Wind Direction compass deg Ave Min Max 257.96 217.00 299.00 256.29 229.00 307.00 270.42 1.00 351.00 153.21 21.00 339.00 191.54 163.00 240.00 191.08 8.00 343.00 45.00 23.00 66.00 196.63 4.00 359.00 174.08 6.00 268.00 178.25 5.00 353.00 125.38 53.00 194.00 243.33 113.00 326.00 82.08 8.00 140.00 178.21 6.00 343.00 84.92 17.00 131.00 85.92 0.00 348.00 192.04 61.00 331.00 232.63 33.00 325.00 141.13 2.00 359.00 193.88 53.00 236.00 263.75 228.00 341.00 145.25 5.00 339.00 242.25 142.00 341.00 304.38 277.00 343.00 198.67 26.00 295.00 226.71 22.00 334.00 196.33 160.00 235.00 295.50 229.00 339.00 288.04 9.00 358.00 108.46 18.00 240.00 201.67 36.00 349.00 274.33 220.00 348.00 179.08 15.00 332.00 228.00 16.00 359.00 295.04 200.00 324.00 244.50 221.00 284.00 257.46 223.00 287.00 248.25 131.00 311.00 157.79 78.00 210.00 242.38 115.00 313.00 278.54 202.00 321.00 209.33 168.00 329.00 275.08 228.00 313.00 242.33 205.00 292.00 155.42 18.00 351.00 61.54 40.00 76.00 195.71 21.00 338.00 267.29 92.00 342.00 249.75 184.00 300.00 219.38 0.00 360.00 108.54 92.00 123.00 203.96 108.00 312.00 162.96 17.00 359.00 115.29 40.00 335.00 113.29 1.00 339.00 77.79 12.00 222.00 91.25 24.00 137.00 129.21 7.00 338.00 304.54 275.00 330.00 252.25 226.00 276.00 268.29 227.00 301.00 289.54 259.00 318.00 251.88 219.00 298.00 280.63 215.00 313.00 201.17 132.00 226.00 239.71 3.00 356.00 243.67 4.00 356.00 236.96 143.00 330.00 234.21 191.00 277.00 238.00 218.00 269.00 272.58 228.00 321.00 252.92 229.00 285.00 248.21 220.00 283.00 271.83 233.00 303.00 252.42 197.00 307.00 269.54 218.00 341.00 298.46 258.00 313.00 198.67 165.00 270.00 272.83 166.00 351.00 212.67 60.00 331.00 181.79 9.00 351.00 214.04 172.00 252.00 276.67 221.00 309.00 214.04 192.00 229.00 263.42 211.00 289.00 292.17 259.00 310.00 209.79 179.00 259.00 239.54 26.00 330.00 104.13 30.00 185.00 246.04 181.00 325.00 294.38 257.00 327.00 311.83 3.00 358.00 233.29 37.00 336.00 256.13 231.00 280.00 278.79 238.00 317.00 231.00 216.00 260.00 276.71 230.00 307.00 285.04 225.00 346.00 146.92 30.00 273.00 295.75 282.00 330.00 277.67 241.00 313.00 234.42 47.00 334.00 105.75 11.00 359.00 233.71 194.00 304.00 228.08 199.00 259.00 234.58 1.00 356.00 151.13 21.00 286.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 5766 10.25 5.20 15.70 789.00 3378 9.03 4.10 15.80 593.00 6160 12.74 3.80 22.80 778.00 1491 244.00 13.16 4.10 29.50 5353 7.31 2.80 13.60 633.00 5914 11.13 3.90 30.60 749.00 4008 7.94 4.20 12.60 507.00 2830 11.90 4.40 39.60 550.00 5800 16.82 3.90 47.80 778.00 5867 12.85 3.90 42.40 748.00 5341 11.53 6.90 24.50 694.00 5271 699.00 10.86 2.80 23.10 5134 8.39 3.80 12.60 671.00 5513 17.28 3.30 57.50 720.00 5305 8.34 3.80 12.40 691.00 3954 688.00 11.70 6.50 47.50 1108 14.40 4.00 33.80 162.00 5452 15.04 5.90 33.90 720.00 2452 11.49 3.90 27.80 405.00 3501 13.82 2.50 45.80 666.00 4476 8.05 3.30 12.10 693.00 5290 13.53 4.90 29.10 698.00 5147 10.63 5.50 21.30 694.00 3778 10.38 8.10 12.20 673.00 5409 17.65 6.10 56.50 714.00 5219 17.99 3.20 49.30 697.00 4957 7.08 3.10 11.40 677.00 4277 9.94 5.80 15.60 583.00 2988 10.04 4.00 17.80 576.00 3304 10.04 6.30 39.90 622.00 4268 14.31 5.40 61.10 639.00 4325 9.51 4.20 13.10 576.00 4782 9.05 3.50 35.60 654.00 1992 15.26 6.20 56.40 516.00 1002 188.00 10.49 8.80 28.70 4324 7.10 2.80 11.20 600.00 3911 8.45 2.80 16.70 627.00 4536 12.05 6.50 26.00 639.00 4125 626.00 10.85 5.80 29.20 4065 9.36 4.40 23.10 621.00 4325 11.47 4.70 22.00 616.00 4095 8.77 4.40 12.00 573.00 4137 8.86 3.80 13.20 606.00 2968 7.58 3.00 16.20 592.00 1310 10.55 5.20 24.80 240.00 708 6.45 5.50 7.50 129.00 1169 10.22 5.60 23.90 211.00 2398 18.68 8.10 55.10 555.00 3232 8.77 3.60 13.70 526.00 2374 473.00 10.11 3.50 22.60 2866 8.53 6.30 12.40 548.00 2880 12.92 3.20 31.70 529.00 3090 12.01 4.00 35.20 464.00 1948 9.08 4.00 14.90 420.00 1965 10.73 5.30 23.70 421.00 3384 10.50 4.20 22.60 525.00 578 7.99 5.00 11.70 105.00 496 95.00 8.02 6.30 10.90 681 9.31 8.20 10.30 108.00 3262 7.86 4.20 14.90 509.00 1069 7.85 3.50 10.30 161.00 2594 475.00 9.11 6.20 12.30 2631 6.87 4.20 11.40 471.00 2687 9.98 4.50 29.80 472.00 3041 6.98 4.40 14.40 488.00 2910 8.11 3.50 13.80 472.00 1298 9.56 4.20 22.20 290.00 2982 15.45 4.50 54.60 478.00 2435 6.76 4.60 10.50 435.00 2656 6.21 2.20 12.00 462.00 956 7.67 3.40 10.20 202.00 2724 7.45 3.20 12.40 446.00 1790 6.79 3.40 9.80 396.00 2642 8.22 4.50 10.30 435.00 2283 7.23 3.80 11.00 415.00 1550 7.30 3.90 10.00 361.00 2263 9.13 6.40 11.50 379.00 2074 9.60 4.50 39.60 372.00 1196 9.47 3.90 35.40 193.00 2192 10.67 3.90 17.80 393.00 1904 388.00 8.88 6.30 13.60 2185 7.20 3.60 13.90 393.00 2072 8.24 4.80 11.80 401.00 1988 5.60 3.40 7.50 371.00 1428 318.00 8.14 5.20 11.20 1883 8.75 6.50 10.10 382.00 1106 5.82 2.70 8.30 202.00 1018 6.95 3.40 10.80 294.00 1106 7.63 3.50 11.80 249.00 1528 7.83 5.00 10.50 350.00 512 9.17 6.80 11.20 83.00 1271 9.90 6.40 15.40 291.00 1758 18.17 2.70 71.50 352.00 1733 8.05 3.90 13.90 354.00 349 8.48 6.20 10.60 68.00 1664 5.46 3.80 8.00 294.00 1790 7.95 5.40 10.50 340.00 1376 8.69 4.90 19.70 258.00 793 7.94 5.10 13.70 175.00 1286 9.19 8.40 11.40 219.00 1321 9.93 7.10 15.40 318.00 1743 9.28 5.10 17.80 334.00 445 6.63 4.40 9.60 88.00 1624 312.00 6.62 3.00 11.70 894 6.53 3.20 43.40 171.00 718 7.88 4.20 11.30 177.00 526 7.43 5.20 10.10 122.00 Rain in Method Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket

Day 8/21/2007 8/22/2007 8/23/2007 8/24/2007 8/25/2007 8/26/2007 8/27/2007 8/28/2007 8/29/2007 8/30/2007 8/31/2007 9/1/2007 9/2/2007 9/3/2007 9/4/2007 9/5/2007 9/6/2007 9/7/2007 9/8/2007 9/9/2007 9/10/2007 9/11/2007 9/12/2007 9/13/2007 9/14/2007 9/15/2007 9/16/2007 9/17/2007 9/18/2007 9/19/2007 9/20/2007 9/21/2007 9/22/2007 9/23/2007 9/24/2007 9/25/2007 9/26/2007 9/27/2007 9/28/2007 9/29/2007 9/30/2007 10/1/2007 10/2/2007 10/3/2007 10/4/2007 10/5/2007 10/6/2007 10/7/2007 10/8/2007 10/9/2007 10/10/2007 10/11/2007 10/12/2007 10/13/2007 10/14/2007 10/15/2007 10/16/2007 10/17/2007 10/18/2007 10/19/2007 10/20/2007 10/21/2007 10/22/2007 10/23/2007 10/24/2007 10/25/2007 10/26/2007 10/27/2007 10/28/2007 10/29/2007 10/30/2007 10/31/2007 11/1/2007 11/2/2007 11/3/2007 11/4/2007 11/5/2007 11/6/2007 11/7/2007 11/8/2007 11/9/2007 11/10/2007 11/11/2007 11/12/2007 11/13/2007 11/14/2007 11/15/2007 11/16/2007 11/17/2007 11/18/2007 11/19/2007 11/20/2007 11/21/2007 11/22/2007 11/23/2007 11/24/2007 11/25/2007 11/26/2007 11/27/2007 11/28/2007 11/29/2007 11/30/2007 12/1/2007 12/2/2007 12/3/2007 12/4/2007 12/5/2007

Daily Sum 0.00 0.00 0.00 0.04 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.97 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.19 0.00 0.03 0.22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.08 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.03 0.01 0.00 0.00 0.00 0.02 0.00 0.00 0.02 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.04

Revision 1
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Golder Assoicates

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 13.55 7.50 23.00 7.03 -4.10 19.20 2.54 -6.50 16.70 8.90 -4.40 28.40 17.99 6.30 26.30 20.71 9.90 28.00 22.20 10.50 34.00 23.23 14.80 29.40 18.97 6.00 34.20 21.24 12.20 34.40 26.35 15.60 40.60 27.22 16.60 44.60 28.53 21.10 41.90 31.15 20.60 48.90 32.41 23.10 50.90 21.68 6.60 33.00 8.15 2.70 11.60 12.76 -1.00 27.80 31.08 16.30 43.10 28.67 20.00 35.70 22.47 15.20 33.60 14.75 7.40 25.80 14.01 2.90 31.90 19.74 8.00 37.00 20.22 9.60 30.20 9.70 1.20 17.70 6.46 -1.50 19.00 19.18 3.60 34.40 33.18 24.50 47.80 36.01 24.90 54.40 38.76 30.90 49.30 32.37 23.00 42.70 28.09 19.40 37.50 22.88 12.70 37.40 24.43 14.60 38.10 23.11 7.70 37.80 23.74 14.30 30.70 21.05 14.60 30.00 20.67 15.20 28.90 23.95 7.00 44.70 28.75 14.20 42.80 7.05 -1.20 14.10 15.05 1.30 27.10 -3.95 -7.80 0.60 3.69 -6.30 18.00 2.53 -6.70 14.20 -0.19 -5.40 8.20 12.20 -3.10 23.60 -0.06 -7.50 10.60 12.70 -5.10 32.00 11.41 1.30 23.60 26.76 15.20 40.20 32.99 23.00 47.10 11.18 -14.80 34.80 -16.32 -23.50 -8.20 -6.15 -14.50 5.00 15.59 -6.40 35.30 20.71 14.30 24.80 18.55 12.70 31.30 16.44 7.50 31.00 10.99 8.80 14.60 14.20 8.70 29.00 20.45 7.80 34.80 21.63 8.60 32.60 26.66 6.80 37.60 -4.93 -7.70 3.60 -4.66 -11.00 1.60 2.71 -2.90 11.30 20.30 -1.80 33.40 23.44 -4.40 40.40 3.96 -10.60 16.90 26.58 14.70 42.40 32.47 25.70 39.00 21.78 -1.10 30.70 4.10 -9.90 16.90 11.57 -4.70 19.40 -1.22 -10.40 6.80 16.18 -1.20 37.30 27.78 9.90 48.40 32.24 16.80 51.10 32.02 20.30 47.50 21.28 16.50 24.70 24.63 11.20 39.10 31.07 14.70 43.90 33.86 28.40 41.40 33.52 20.00 47.70 44.38 29.50 60.70 28.90 9.80 36.20 24.65 2.30 44.80 28.63 10.10 36.70 15.70 4.50 30.10 8.29 -3.40 16.20 19.86 -5.50 43.80 29.66 17.80 39.60 28.89 15.70 45.90 40.54 23.10 58.40 47.55 31.30 64.20 41.58 31.50 51.90 34.35 22.50 44.70 24.85 16.40 36.70 25.72 13.60 40.00 31.15 19.90 45.60 36.98 24.50 51.30 38.13 23.10 51.70 31.66 25.70 36.50 31.55 29.00 33.40 31.97 22.80 40.30 Barometric Pressure in Hg Ave Min Max 27.07 27.01 27.12 27.26 27.14 27.43 27.51 27.45 27.57 27.33 27.12 27.52 27.16 27.06 27.33 27.37 27.30 27.42 27.07 26.99 27.28 27.20 27.02 27.36 27.33 27.28 27.37 27.20 27.11 27.30 27.08 27.07 27.11 26.95 26.86 27.07 27.03 26.92 27.08 26.93 26.88 27.03 26.82 26.76 26.89 27.08 26.79 27.37 27.27 27.18 27.36 27.18 27.16 27.21 26.97 26.87 27.14 27.19 27.06 27.24 27.11 27.06 27.21 27.15 27.11 27.18 27.04 26.96 27.16 26.88 26.82 26.95 26.86 26.80 26.95 27.28 26.97 27.56 27.70 27.58 27.76 27.42 27.04 27.73 27.04 26.92 27.12 26.80 26.63 26.90 26.54 26.49 26.61 26.74 26.63 26.80 26.92 26.81 27.07 27.09 26.98 27.17 26.97 26.93 27.07 26.98 26.79 27.11 26.90 26.76 27.13 27.21 27.14 27.25 27.30 27.18 27.43 27.28 26.96 27.46 26.86 26.72 27.15 27.30 27.19 27.38 27.00 26.85 27.22 27.40 27.25 27.47 27.36 27.30 27.43 27.46 27.39 27.54 27.44 27.29 27.53 27.13 27.03 27.27 27.34 27.19 27.40 27.14 27.08 27.24 27.06 26.97 27.13 27.01 26.96 27.04 26.78 26.48 26.99 26.56 26.38 26.90 27.01 26.91 27.04 27.07 27.01 27.15 26.97 26.78 27.13 26.91 26.76 27.07 27.04 27.00 27.08 26.88 26.78 26.98 27.12 26.91 27.31 27.25 27.09 27.33 26.94 26.85 27.06 26.83 26.67 27.07 26.82 26.73 26.99 27.38 27.04 27.61 27.42 27.10 27.63 27.19 27.08 27.28 27.13 27.05 27.21 26.82 26.64 27.13 27.24 27.17 27.28 27.18 27.04 27.24 26.92 26.84 27.03 27.10 27.04 27.18 27.21 27.11 27.28 27.19 27.04 27.40 27.29 27.20 27.40 27.09 27.04 27.19 27.02 26.98 27.06 27.05 27.00 27.09 27.06 27.00 27.09 27.35 27.11 27.53 27.44 27.33 27.54 27.19 26.94 27.35 27.02 26.88 27.22 27.22 27.04 27.31 26.86 26.75 27.03 27.17 26.87 27.41 27.17 26.87 27.41 26.98 26.84 27.29 27.27 27.20 27.32 27.36 27.22 27.49 27.23 26.98 27.47 27.09 26.99 27.23 27.35 27.24 27.40 27.31 27.23 27.37 27.08 26.95 27.22 26.94 26.91 27.01 26.95 26.92 27.01 27.09 27.02 27.18 27.16 27.12 27.19 27.17 27.14 27.22 27.09 27.00 27.20 27.11 27.07 27.14 27.12 27.04 27.22 27.20 27.16 27.26 27.33 27.22 27.49 Relative Humidity % Ave Min Max 70.20 54.40 84.20 62.06 43.00 72.60 68.04 54.10 75.40 67.97 45.80 78.20 73.02 54.70 78.50 72.29 56.90 80.70 68.13 41.40 85.90 68.15 61.90 74.60 69.40 47.40 80.00 63.40 41.70 76.40 59.23 38.80 72.00 60.02 38.80 71.30 57.49 36.20 68.20 57.27 35.90 69.00 61.03 34.00 76.50 71.33 62.50 85.50 64.08 54.20 72.60 69.05 59.60 83.70 66.33 43.60 83.60 69.57 51.40 81.40 71.78 47.60 82.10 79.54 69.50 84.00 66.58 31.30 82.50 57.27 32.30 72.50 65.71 53.50 75.70 72.58 62.40 80.50 67.31 46.10 73.70 55.36 25.30 77.40 49.94 33.60 59.30 48.15 23.40 63.70 61.25 52.90 71.80 59.64 32.20 87.80 50.67 35.40 61.20 53.83 33.40 66.20 57.89 36.10 74.40 62.19 34.70 80.30 71.73 58.50 82.00 73.30 61.20 81.20 76.56 64.90 84.10 70.86 40.20 87.20 65.45 48.40 79.00 58.40 37.50 67.40 74.22 67.70 81.70 61.03 47.80 70.50 59.93 43.60 70.40 68.31 50.60 74.60 62.97 53.20 68.80 66.15 53.20 84.00 68.87 57.10 76.50 60.88 39.00 74.30 69.48 54.60 77.80 59.60 39.40 73.70 62.36 42.00 77.00 67.41 51.20 80.10 50.62 42.70 56.00 55.80 46.40 64.90 54.78 29.60 71.70 69.36 58.10 80.20 80.62 69.70 84.70 73.94 63.50 83.30 79.21 78.10 81.10 71.78 49.90 78.20 70.34 51.10 82.00 72.78 47.70 85.00 74.35 53.80 86.20 57.22 49.70 65.90 60.25 50.70 69.50 68.51 61.20 74.50 74.72 62.10 84.40 77.13 53.60 87.50 67.42 55.70 78.20 65.99 44.00 78.20 75.97 64.60 84.70 67.25 48.00 79.70 61.42 37.80 75.60 63.03 36.40 80.60 62.55 48.30 71.60 65.61 39.80 82.20 64.12 31.30 83.50 67.08 35.10 85.50 71.78 46.30 87.00 76.80 62.00 86.10 68.54 43.20 80.60 64.84 36.40 85.00 76.27 68.30 85.40 66.66 40.10 82.90 54.94 26.60 78.30 60.17 40.50 84.50 58.31 32.80 80.80 70.27 58.90 78.30 65.31 45.10 75.60 56.95 36.50 76.30 52.10 28.60 65.10 63.45 38.60 80.00 60.75 34.60 81.10 46.50 18.30 76.00 44.13 24.80 63.10 58.98 29.10 87.40 54.58 31.30 70.10 56.75 30.70 80.90 52.84 33.10 73.10 61.59 39.10 83.60 63.85 28.90 88.60 46.28 21.20 76.20 75.00 45.70 87.80 85.49 79.00 89.20 74.42 52.70 89.10 Wind Speed mph Ave Min Max 11.02 7.80 14.00 9.22 4.90 15.90 5.23 1.50 8.20 8.98 5.70 14.50 11.43 8.90 15.60 9.64 5.30 14.10 14.29 10.20 21.00 14.71 4.30 22.60 7.69 3.90 12.40 9.13 4.40 12.00 12.00 8.00 16.80 8.24 4.60 11.10 9.87 5.90 13.90 8.74 5.20 13.00 8.73 4.00 13.60 12.82 5.90 19.50 11.65 7.30 16.20 7.53 3.30 11.90 11.15 6.40 15.60 9.23 4.50 13.90 4.96 2.80 10.70 6.06 3.20 9.10 5.86 3.90 9.30 9.40 7.40 14.20 6.99 5.00 9.60 12.38 7.00 16.60 9.25 5.90 13.30 13.80 4.30 24.00 7.83 3.70 12.30 10.63 6.40 15.40 11.52 6.60 18.90 10.99 3.10 16.30 9.03 4.00 14.40 6.85 3.60 9.60 8.60 6.70 11.10 6.68 3.10 10.90 9.04 3.70 14.30 5.30 1.30 12.40 7.21 2.90 12.60 7.05 1.30 14.10 15.69 10.00 22.20 14.51 7.90 21.50 12.23 8.90 19.60 11.18 7.40 15.80 8.61 2.90 14.10 4.98 1.80 10.40 10.41 3.60 18.20 14.55 8.40 19.70 10.12 7.10 14.90 7.86 3.10 14.90 7.14 4.10 11.40 13.79 9.70 18.50 11.71 5.80 17.60 17.55 8.80 25.80 13.96 5.20 21.30 8.34 4.70 12.00 12.18 4.80 18.90 7.80 3.80 12.50 5.12 2.30 7.90 7.71 1.90 13.00 5.58 2.90 7.60 5.62 1.00 10.50 11.82 8.40 15.50 10.28 6.00 14.90 10.00 2.00 18.30 14.96 12.30 17.60 12.77 3.60 19.40 8.50 4.70 13.50 10.03 3.40 16.30 12.55 6.40 17.30 8.44 4.60 11.90 12.90 9.50 19.40 12.61 9.70 14.50 16.15 9.30 22.60 7.40 5.70 10.60 11.23 6.60 14.50 12.18 7.40 16.00 8.20 3.50 11.60 4.17 2.80 5.40 5.12 2.30 6.90 7.33 4.40 11.00 10.95 8.40 13.20 10.33 8.00 12.40 7.61 4.30 11.40 11.40 4.40 16.00 10.19 6.60 15.50 12.19 7.80 17.80 16.69 9.60 21.70 9.61 3.90 17.10 11.88 4.80 18.50 12.37 6.30 18.90 8.63 3.50 11.50 12.15 7.30 19.50 11.71 6.70 16.80 6.55 2.90 9.20 13.13 5.00 24.70 8.80 2.80 14.40 15.20 6.50 22.90 11.66 6.70 17.10 8.04 6.20 9.80 10.42 5.00 14.80 13.07 8.50 17.60 10.08 3.90 15.30 8.69 3.70 14.30 8.75 3.00 13.30 8.38 3.80 12.10 9.03 3.10 15.80 Wind Direction compass deg Ave Min Max 277.17 237.00 306.00 278.83 234.00 323.00 254.33 95.00 360.00 219.88 192.00 245.00 256.08 212.00 300.00 265.58 223.00 332.00 235.21 206.00 275.00 274.96 78.00 351.00 198.25 64.00 258.00 239.71 220.00 257.00 242.63 218.00 259.00 218.33 155.00 241.00 244.04 227.00 270.00 230.25 180.00 264.00 223.96 208.00 239.00 302.38 236.00 328.00 283.13 239.00 315.00 262.88 216.00 296.00 250.38 212.00 311.00 271.08 237.00 311.00 189.29 90.00 265.00 196.13 165.00 226.00 225.25 203.00 242.00 233.17 216.00 260.00 265.29 216.00 352.00 296.46 269.00 324.00 274.17 213.00 300.00 199.88 173.00 251.00 220.92 135.00 309.00 220.54 186.00 274.00 231.67 200.00 278.00 229.17 198.00 256.00 267.54 226.00 301.00 225.54 172.00 263.00 245.58 195.00 294.00 236.88 156.00 290.00 233.96 1.00 357.00 208.17 65.00 255.00 171.83 43.00 355.00 200.54 164.00 221.00 265.21 210.00 324.00 283.92 235.00 309.00 279.17 220.00 351.00 293.33 246.00 314.00 216.08 69.00 262.00 153.00 18.00 342.00 254.42 13.00 331.00 266.71 236.00 335.00 253.54 14.00 356.00 186.71 3.00 308.00 285.96 210.00 359.00 243.04 225.00 255.00 212.29 190.00 232.00 277.58 221.00 307.00 290.79 278.00 345.00 113.63 6.00 185.00 201.88 162.00 225.00 263.63 40.00 355.00 150.58 54.00 223.00 126.63 26.00 354.00 236.17 1.00 352.00 217.00 76.00 329.00 246.79 210.00 315.00 220.50 183.00 269.00 271.96 206.00 325.00 306.71 298.00 328.00 180.63 19.00 353.00 189.96 9.00 337.00 231.38 10.00 318.00 177.13 4.00 355.00 265.21 206.00 339.00 232.29 213.00 249.00 266.38 215.00 309.00 313.67 296.00 342.00 297.04 245.00 347.00 166.63 1.00 357.00 145.17 85.00 172.00 244.46 190.00 291.00 217.63 100.00 251.00 229.21 185.00 255.00 209.92 6.00 342.00 205.50 4.00 356.00 267.21 245.00 290.00 226.04 165.00 292.00 280.17 210.00 331.00 237.17 197.00 281.00 233.00 191.00 320.00 314.21 300.00 331.00 236.83 46.00 358.00 309.00 181.00 359.00 285.13 243.00 336.00 224.17 2.00 359.00 224.58 192.00 290.00 316.75 267.00 358.00 303.17 230.00 348.00 245.38 221.00 273.00 257.96 221.00 303.00 271.08 234.00 307.00 292.96 253.00 341.00 123.83 1.00 354.00 130.46 94.00 149.00 169.46 141.00 200.00 227.96 197.00 284.00 262.50 227.00 339.00 174.29 7.00 335.00 147.04 70.00 230.00 295.25 196.00 358.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 1602 8.48 5.20 9.90 318.00 1670 8.75 5.00 13.50 317.00 1464 15.46 5.20 48.90 316.00 1650 312.00 7.25 4.00 32.00 1105 6.93 3.70 9.60 304.00 1377 8.01 3.60 11.70 307.00 1002 5.93 3.40 8.80 265.00 696 9.40 7.70 19.50 146.00 1363 9.03 3.10 29.90 309.00 1573 5.81 2.80 9.70 302.00 1535 5.90 3.60 9.80 298.00 1379 300.00 6.16 3.20 16.30 1506 5.42 3.20 9.50 298.00 1307 6.06 2.90 9.70 293.00 1314 8.90 3.20 52.60 287.00 422 107.00 8.25 6.40 9.10 1228 8.17 4.80 10.30 279.00 669 9.34 5.20 24.70 118.00 779 6.66 3.50 9.10 157.00 1561 8.74 4.90 11.40 312.00 1518 10.69 3.30 32.30 293.00 1081 7.00 4.90 9.90 212.00 1551 6.11 3.10 14.40 294.00 1072 5.52 3.00 9.10 250.00 1031 8.78 3.70 25.80 210.00 1138 9.11 7.70 11.10 277.00 1574 8.06 4.20 11.30 302.00 1338 7.37 4.70 18.10 279.00 1251 9.49 4.30 23.10 243.00 1608 7.13 3.50 23.50 307.00 268 7.36 4.30 21.70 83.00 1689 7.30 3.40 33.60 315.00 1266 9.03 4.20 26.10 283.00 1648 7.49 3.90 14.60 316.00 1362 313.00 7.35 3.50 13.50 1541 9.08 4.30 26.00 315.00 680 7.88 4.20 10.40 122.00 1200 11.68 3.30 35.00 238.00 1717 321.00 11.17 5.90 24.80 1581 9.47 4.20 37.60 323.00 674 7.09 4.20 9.50 196.00 1833 7.75 3.70 10.00 348.00 926 7.43 3.80 10.30 211.00 1903 8.43 7.10 9.80 356.00 1827 8.02 5.00 12.00 333.00 1223 18.47 4.80 50.40 229.00 1657 8.17 5.50 11.60 324.00 1356 7.88 5.70 12.00 299.00 2040 7.65 2.70 11.00 377.00 2124 377.00 8.61 3.50 25.60 2214 8.98 3.80 36.20 429.00 2172 5.84 2.80 8.00 387.00 1833 5.99 3.70 10.70 389.00 769 7.97 3.60 10.10 163.00 2288 9.70 7.90 12.10 396.00 1731 9.54 4.50 14.90 354.00 1926 5.52 3.40 7.50 401.00 981 162.00 8.80 3.10 19.00 1541 11.38 3.50 40.90 384.00 2122 13.06 3.00 47.80 420.00 704 9.00 6.40 10.20 149.00 2333 421.00 11.58 3.30 52.10 1199 6.28 3.00 10.10 267.00 1445 6.18 3.30 10.60 252.00 2092 9.45 7.00 13.30 443.00 1561 9.49 8.60 10.70 267.00 1075 8.94 6.80 15.60 188.00 1573 8.92 3.80 15.70 274.00 1934 8.09 3.70 16.40 448.00 1011 8.18 6.00 12.90 194.00 1875 9.35 4.90 15.40 344.00 2499 5.68 3.40 8.00 478.00 804 7.31 4.20 9.50 122.00 2336 9.08 8.40 10.00 507.00 3196 11.03 6.20 23.20 509.00 2772 8.27 4.00 14.00 488.00 1618 7.51 4.80 10.10 287.00 3384 9.39 2.80 33.20 520.00 3350 15.50 2.40 46.40 532.00 3383 15.61 2.70 56.20 533.00 2768 494.00 9.63 4.50 20.20 1041 9.30 6.80 13.40 189.00 3188 8.68 5.70 14.40 495.00 2179 9.01 3.50 31.50 486.00 2005 400.00 8.24 5.20 10.80 3680 8.43 2.80 24.90 545.00 2625 6.41 2.80 9.10 478.00 3444 9.15 8.30 11.00 576.00 3499 10.18 4.60 17.10 570.00 1307 9.64 5.00 17.40 230.00 3086 8.51 3.30 11.50 518.00 4255 9.94 3.80 19.00 614.00 3524 6.08 2.40 8.70 581.00 3169 9.54 6.90 13.90 630.00 4134 11.65 3.50 19.50 619.00 4249 7.06 2.80 26.00 631.00 2774 9.60 3.80 39.10 438.00 4214 8.19 5.10 11.40 620.00 4455 8.45 5.40 13.30 645.00 4494 11.28 3.70 20.50 645.00 4446 9.10 6.30 16.20 678.00 3412 8.59 5.80 14.20 576.00 3336 9.34 3.50 24.00 625.00 4079 678.00 9.82 3.40 22.20 2133 15.95 6.00 61.00 298.00 867 8.68 5.50 11.80 111.00 3195 10.68 4.00 26.40 620.00 Rain in Method Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket

Day 12/6/2007 12/7/2007 12/8/2007 12/9/2007 12/10/2007 12/11/2007 12/12/2007 12/13/2007 12/14/2007 12/15/2007 12/16/2007 12/17/2007 12/18/2007 12/19/2007 12/20/2007 12/21/2007 12/22/2007 12/23/2007 12/24/2007 12/25/2007 12/26/2007 12/27/2007 12/28/2007 12/29/2007 12/30/2007 12/31/2007 1/1/2008 1/2/2008 1/3/2008 1/4/2008 1/5/2008 1/6/2008 1/7/2008 1/8/2008 1/9/2008 1/10/2008 1/11/2008 1/12/2008 1/13/2008 1/14/2008 1/15/2008 1/16/2008 1/17/2008 1/18/2008 1/19/2008 1/20/2008 1/21/2008 1/22/2008 1/23/2008 1/24/2008 1/25/2008 1/26/2008 1/27/2008 1/28/2008 1/29/2008 1/30/2008 1/31/2008 2/1/2008 2/2/2008 2/3/2008 2/4/2008 2/5/2008 2/6/2008 2/7/2008 2/8/2008 2/9/2008 2/10/2008 2/11/2008 2/12/2008 2/13/2008 2/14/2008 2/15/2008 2/16/2008 2/17/2008 2/18/2008 2/19/2008 2/20/2008 2/21/2008 2/22/2008 2/23/2008 2/24/2008 2/25/2008 2/26/2008 2/27/2008 2/28/2008 2/29/2008 3/1/2008 3/2/2008 3/3/2008 3/4/2008 3/5/2008 3/6/2008 3/7/2008 3/8/2008 3/9/2008 3/10/2008 3/11/2008 3/12/2008 3/13/2008 3/14/2008 3/15/2008 3/16/2008 3/17/2008 3/18/2008 3/19/2008 3/20/2008 3/21/2008

Daily Sum 0.03 0.01 0.01 0.01 0.03 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.03 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.02 0.04 0.01 0.01 0.00 0.02 0.01 0.01 0.05 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00

Revision 1
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Golder Assoicates

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 31.08 20.90 37.80 28.73 10.40 44.50 42.02 30.60 56.50 34.61 26.80 44.00 31.89 18.20 45.40 31.44 27.10 37.60 32.51 24.30 42.90 33.93 18.90 50.50 29.75 23.20 38.30 27.03 21.80 32.50 29.08 15.10 42.60 33.70 18.30 47.60 38.58 21.80 52.50 42.36 27.10 58.00 29.34 24.10 33.80 29.40 16.00 45.70 34.92 18.20 51.80 38.05 29.70 46.20 40.71 31.70 51.60 39.50 36.30 44.20 40.05 33.20 49.90 39.13 30.40 49.70 43.83 22.70 60.50 58.96 39.40 77.80 54.63 43.20 66.30 44.04 30.90 51.70 42.93 26.50 57.30 52.50 30.50 70.50 56.26 43.10 70.10 43.45 26.80 56.80 31.97 19.10 44.70 43.42 33.00 54.50 33.37 21.80 45.20 32.13 29.40 36.90 34.96 25.60 45.90 33.49 27.40 39.40 38.45 21.80 52.70 43.74 25.30 60.50 58.67 33.00 79.50 57.39 46.40 70.00 43.30 37.30 50.50 40.63 29.50 52.00 46.42 30.40 59.30 54.09 40.30 66.60 58.47 38.60 73.00 53.23 43.10 61.50 50.56 37.50 62.00 45.74 40.80 49.90 43.63 32.40 49.90 39.87 31.20 51.10 51.43 32.30 70.20 49.35 44.80 56.60 47.53 40.20 58.50 53.21 40.30 64.50 57.68 45.10 67.80 65.90 51.80 76.40 64.01 50.80 75.10 65.73 44.90 82.70 62.55 51.10 70.10 59.50 41.90 72.20 55.71 44.40 65.00 57.31 48.80 65.90 57.20 46.60 64.70 50.93 47.80 57.20 50.65 40.80 55.30 43.53 36.10 53.60 44.46 35.10 51.80 51.83 36.90 62.80 58.83 51.00 70.70 62.19 48.70 74.70 65.09 53.90 75.20 63.43 50.00 77.80 53.94 50.40 57.00 57.55 47.80 69.00 59.06 46.70 68.40 53.32 48.60 56.50 54.80 47.90 65.30 56.49 45.70 67.60 51.98 41.60 63.10 53.36 46.10 62.70 51.43 42.10 58.00 47.12 39.70 50.10 45.89 39.70 51.00 53.90 46.30 67.00 61.50 45.60 75.90 57.24 46.50 66.90 59.96 43.40 73.40 66.35 53.50 77.50 69.48 58.00 82.50 67.80 55.40 80.00 67.92 53.50 80.80 67.77 54.70 79.80 68.45 53.10 80.20 70.81 60.90 82.50 69.78 56.30 84.90 70.65 53.50 83.90 68.55 55.10 86.10 64.16 54.90 72.10 64.07 54.50 74.80 68.33 51.70 83.10 74.25 52.60 92.70 79.29 61.30 96.50 64.04 55.50 73.10 65.35 50.70 78.00 72.90 55.40 88.80 77.39 63.50 90.50 75.80 60.40 90.70 Barometric Pressure in Hg Ave Min Max 27.64 27.51 27.69 27.48 27.14 27.69 26.93 26.85 27.11 27.12 26.99 27.23 27.20 27.13 27.25 27.17 27.14 27.22 27.16 27.13 27.22 26.89 26.73 27.13 27.26 27.13 27.34 27.29 27.22 27.40 27.36 27.27 27.42 27.21 27.16 27.27 27.18 27.13 27.24 27.02 26.95 27.12 26.97 26.94 27.03 27.16 27.04 27.21 27.18 27.14 27.20 27.18 27.16 27.21 27.12 27.07 27.17 27.15 27.11 27.18 27.26 27.17 27.35 27.44 27.35 27.53 27.43 27.27 27.52 26.99 26.72 27.24 26.66 26.53 26.87 27.08 26.88 27.24 27.21 27.13 27.27 27.04 26.97 27.12 26.99 26.91 27.04 26.88 26.76 27.10 27.21 27.13 27.25 27.19 27.13 27.29 27.21 27.06 27.33 27.16 27.04 27.31 27.25 27.17 27.32 27.35 27.19 27.46 27.37 27.31 27.42 27.22 27.05 27.35 26.90 26.73 27.04 26.71 26.63 26.85 26.89 26.83 27.04 27.21 27.05 27.31 27.20 27.11 27.29 27.16 27.12 27.20 27.15 27.07 27.20 27.03 26.99 27.09 27.11 27.08 27.14 27.08 27.05 27.12 27.10 27.06 27.13 27.26 27.13 27.32 26.99 26.81 27.22 26.90 26.83 27.04 27.16 27.06 27.23 27.13 27.06 27.25 27.32 27.27 27.37 27.22 27.19 27.26 27.21 27.14 27.26 26.94 26.77 27.14 27.03 26.85 27.20 27.14 27.04 27.22 26.96 26.89 27.04 27.04 27.00 27.10 27.14 27.07 27.21 26.94 26.80 27.17 26.94 26.82 27.16 27.35 27.18 27.46 27.53 27.47 27.57 27.37 27.23 27.52 27.05 26.95 27.21 27.06 27.00 27.17 27.22 27.17 27.25 27.22 27.18 27.26 27.12 27.04 27.21 26.93 26.85 27.04 26.86 26.81 26.95 26.97 26.88 27.00 26.76 26.70 26.86 26.95 26.85 26.99 26.95 26.94 26.98 27.05 26.94 27.11 27.05 26.99 27.10 26.93 26.86 27.04 26.85 26.81 26.92 27.03 26.94 27.10 27.12 27.08 27.22 27.28 27.22 27.38 27.35 27.31 27.38 27.29 27.24 27.33 27.21 27.15 27.27 27.25 27.21 27.31 27.37 27.31 27.41 27.39 27.36 27.41 27.30 27.22 27.39 27.24 27.22 27.28 27.17 27.04 27.27 27.20 27.15 27.25 27.06 26.98 27.13 27.11 26.98 27.20 27.36 27.22 27.47 27.45 27.40 27.50 27.27 27.15 27.39 27.10 27.04 27.22 27.33 27.23 27.40 27.32 27.25 27.39 27.15 27.04 27.26 27.00 26.96 27.08 27.10 27.07 27.14 Relative Humidity % Ave Min Max 60.50 39.20 77.30 55.25 26.70 83.30 31.20 6.50 53.60 45.10 31.10 59.60 45.17 18.50 72.60 67.62 51.50 84.90 61.30 28.30 83.20 55.16 38.60 78.80 53.18 27.60 76.50 75.90 58.00 86.00 66.33 30.90 87.50 49.68 21.00 84.50 32.70 17.30 55.10 35.10 19.00 59.00 76.28 61.60 86.70 48.58 14.90 83.40 30.80 9.60 57.30 67.52 52.10 82.40 68.92 47.70 87.10 77.74 61.50 86.90 71.49 44.40 86.90 62.68 34.10 87.50 47.08 18.20 81.20 33.69 14.00 52.70 48.06 30.00 77.10 50.43 24.40 82.60 45.13 19.50 79.20 31.11 12.00 59.60 31.05 16.10 45.90 52.73 39.40 67.10 41.25 17.60 70.70 28.38 10.10 52.90 53.59 25.90 84.70 82.40 68.50 90.00 63.73 40.50 87.30 60.00 34.90 79.80 42.02 20.00 79.30 38.66 18.30 64.80 35.38 10.90 66.20 51.48 33.40 67.60 67.42 56.50 81.60 37.13 14.50 58.80 41.43 20.80 68.70 39.13 20.40 62.00 37.00 17.60 70.40 49.50 36.50 78.30 61.80 36.40 86.50 79.39 70.60 88.80 78.95 64.80 90.90 65.88 32.00 89.60 55.38 24.70 85.00 76.83 56.50 89.40 67.59 34.80 90.20 55.38 35.50 77.80 39.77 19.60 66.60 39.12 23.70 63.00 32.20 16.90 55.70 37.04 15.80 68.50 44.50 26.00 62.60 44.45 23.40 76.00 35.69 21.90 52.50 41.80 30.30 55.50 58.13 45.70 78.60 84.53 57.40 89.80 82.40 71.00 89.60 69.18 44.60 88.90 58.38 43.40 78.60 63.68 45.80 85.80 71.79 50.80 90.80 61.97 32.80 87.20 46.30 24.30 73.10 52.47 26.60 73.70 82.24 74.50 88.90 65.45 31.60 90.90 62.60 45.40 85.40 83.43 73.40 89.60 73.84 51.30 87.80 49.58 22.80 77.10 65.95 36.40 83.60 73.20 45.80 88.00 77.54 65.20 90.00 85.57 72.20 90.80 78.85 67.60 87.90 70.90 42.90 85.10 53.72 24.20 85.90 57.35 39.10 77.30 58.52 32.80 84.60 59.35 39.90 79.40 55.06 29.10 84.20 52.79 26.20 81.90 44.62 20.20 76.20 47.06 28.50 67.00 47.38 27.20 75.60 43.71 19.00 64.60 58.32 37.90 73.60 46.34 22.00 75.90 57.38 25.80 85.10 48.89 24.80 85.00 59.54 39.20 81.70 49.88 21.10 80.90 43.83 16.00 78.90 43.00 15.90 78.40 53.28 36.40 68.60 57.48 35.70 81.80 53.37 29.10 79.60 46.39 16.80 83.30 38.57 15.60 68.70 Wind Speed mph Ave Min Max 9.08 5.50 12.20 11.61 3.80 24.00 21.23 11.70 32.90 13.86 2.90 19.00 7.87 3.80 13.90 16.36 10.80 23.80 11.66 4.70 19.30 14.72 3.70 27.00 10.66 7.10 19.30 8.21 2.80 12.60 8.11 3.00 14.40 9.70 5.20 16.60 10.01 5.60 16.60 11.56 6.00 18.50 14.71 4.70 22.50 7.09 4.30 9.00 11.33 5.10 18.40 12.03 7.80 16.20 13.18 5.20 21.30 12.21 6.20 17.60 12.15 7.10 20.10 12.69 7.40 22.20 6.43 4.60 10.90 15.57 9.40 21.80 13.78 7.10 20.20 12.04 7.00 16.90 9.48 6.40 12.80 9.68 3.20 14.70 18.79 8.40 26.40 19.96 13.00 30.90 11.83 3.80 16.60 16.03 5.30 28.40 14.28 5.60 22.90 13.19 8.50 17.10 5.79 2.70 8.60 15.84 6.80 21.20 11.83 6.20 18.10 11.90 4.40 16.90 12.83 5.30 20.80 11.12 4.90 19.40 19.58 8.60 29.50 21.06 7.40 27.90 10.33 7.80 13.00 11.87 8.70 14.40 9.93 3.10 15.80 9.74 2.80 19.30 6.83 3.30 14.20 8.53 4.80 12.30 12.23 5.70 19.70 12.61 4.90 25.20 12.58 5.80 20.40 10.77 4.80 15.50 9.21 5.30 16.00 11.89 7.40 16.60 10.94 6.10 14.40 16.19 9.10 23.70 14.41 3.10 24.70 10.19 2.50 18.30 15.95 3.10 26.70 8.94 3.80 15.80 21.48 13.80 28.40 22.23 14.00 29.60 23.37 17.80 27.90 20.27 12.80 27.20 16.16 11.90 20.80 12.61 6.70 16.60 9.42 6.10 12.80 13.24 6.10 17.60 9.63 6.20 16.80 8.97 4.00 15.30 10.25 4.20 14.30 8.68 2.80 20.50 13.15 3.50 22.10 8.37 3.90 16.90 7.98 2.40 15.00 13.27 9.90 18.00 12.10 9.30 15.10 14.95 9.40 19.30 17.39 9.80 25.50 11.88 1.30 18.30 14.30 3.70 23.10 9.36 2.70 14.70 20.62 6.80 29.10 16.73 9.60 22.60 14.08 8.20 21.40 11.15 2.40 16.40 6.82 4.60 9.80 9.73 3.80 18.00 9.83 4.60 14.70 8.44 3.60 14.50 8.08 3.30 11.80 7.34 2.70 14.50 11.67 4.60 17.50 9.31 6.00 14.50 11.51 4.40 25.20 9.26 5.90 14.40 8.09 2.50 20.70 17.48 6.00 25.60 15.12 6.70 18.70 6.95 2.40 15.10 12.12 8.10 16.80 13.08 6.90 20.10 8.12 5.80 10.80 10.40 5.80 16.00 12.83 8.00 16.00 11.93 6.90 17.50 7.15 5.20 10.80 Wind Direction compass deg Ave Min Max 298.88 5.00 359.00 165.63 40.00 210.00 246.63 180.00 299.00 291.75 232.00 326.00 185.58 98.00 242.00 181.79 164.00 199.00 221.58 158.00 275.00 188.79 57.00 299.00 190.17 8.00 328.00 103.83 33.00 311.00 212.71 47.00 337.00 252.83 224.00 294.00 254.04 228.00 274.00 242.00 42.00 359.00 52.54 39.00 92.00 102.42 4.00 360.00 175.17 151.00 206.00 167.46 153.00 186.00 137.88 73.00 165.00 135.67 16.00 351.00 339.79 299.00 356.00 270.38 0.00 359.00 215.42 146.00 312.00 194.58 165.00 205.00 281.33 217.00 346.00 298.79 246.00 343.00 237.25 216.00 251.00 216.04 96.00 287.00 148.50 104.00 192.00 221.29 112.00 298.00 251.42 133.00 288.00 239.46 158.00 340.00 74.54 2.00 340.00 57.54 1.00 359.00 211.13 2.00 358.00 304.54 251.00 328.00 245.17 6.00 341.00 157.88 110.00 185.00 170.67 116.00 208.00 226.13 64.00 348.00 93.13 12.00 357.00 104.04 0.00 358.00 273.63 243.00 302.00 280.29 256.00 310.00 252.67 101.00 349.00 67.21 28.00 213.00 133.58 10.00 271.00 154.38 108.00 208.00 146.67 26.00 210.00 216.13 0.00 351.00 171.79 1.00 236.00 246.33 1.00 334.00 253.96 1.00 359.00 260.96 197.00 350.00 300.29 251.00 332.00 287.88 236.00 322.00 301.38 10.00 360.00 209.67 51.00 312.00 259.96 8.00 356.00 143.63 23.00 349.00 107.79 92.00 120.00 93.42 64.00 120.00 97.92 72.00 121.00 124.63 89.00 214.00 272.75 216.00 350.00 96.38 1.00 359.00 98.67 33.00 164.00 146.67 107.00 168.00 194.79 127.00 308.00 289.38 203.00 360.00 290.88 227.00 316.00 170.67 6.00 325.00 77.46 40.00 149.00 228.29 96.00 315.00 160.71 7.00 349.00 44.92 25.00 67.00 289.79 230.00 357.00 246.38 218.00 268.00 241.08 219.00 259.00 243.08 3.00 344.00 106.17 69.00 231.00 226.04 87.00 339.00 240.54 202.00 276.00 276.33 241.00 318.00 265.00 224.00 314.00 254.96 12.00 360.00 179.25 118.00 241.00 154.38 93.00 183.00 249.00 135.00 359.00 193.58 10.00 347.00 251.33 3.00 345.00 89.79 36.00 223.00 156.54 128.00 215.00 196.29 16.00 356.00 183.67 26.00 355.00 213.21 70.00 291.00 168.08 20.00 357.00 286.88 213.00 312.00 299.79 2.00 356.00 159.50 9.00 322.00 187.38 160.00 219.00 178.29 1.00 357.00 99.92 6.00 359.00 166.08 134.00 196.00 172.79 146.00 198.00 234.88 33.00 321.00 230.04 65.00 321.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 3371 10.10 5.40 16.30 517.00 4956 9.29 4.20 15.10 694.00 3601 7.97 5.20 10.30 611.00 3987 614.00 9.95 4.20 21.80 3244 14.00 3.30 49.80 499.00 3725 7.28 5.20 9.80 600.00 2640 8.98 4.20 22.70 390.00 3138 9.90 5.10 31.50 499.00 4443 12.01 4.10 29.70 680.00 2302 8.81 3.70 29.20 355.00 4355 10.84 3.20 28.60 628.00 4842 667.00 8.91 2.80 20.70 5837 9.03 3.10 14.90 758.00 5229 7.53 2.60 13.80 724.00 2065 6.41 5.00 12.80 249.00 6023 777.00 16.29 5.00 48.40 6089 8.53 4.50 15.00 772.00 2778 8.89 6.40 12.50 532.00 2995 9.30 6.30 19.50 572.00 2187 7.63 5.70 9.90 276.00 3947 9.75 7.90 12.20 532.00 4989 9.25 5.00 12.30 626.00 6361 16.93 3.00 52.10 794.00 5669 7.08 4.70 11.60 813.00 5491 8.80 3.30 12.70 775.00 5562 10.22 3.90 16.70 791.00 5126 8.69 2.60 18.50 666.00 6340 11.94 2.40 39.60 810.00 5730 8.18 5.90 10.60 804.00 3647 9.10 7.20 12.10 517.00 6802 11.46 4.90 19.30 837.00 5902 9.99 6.30 30.80 836.00 3848 7.63 5.00 15.90 693.00 1479 8.05 5.80 10.50 284.00 5008 673.00 16.52 3.80 41.90 4696 9.06 5.70 12.70 706.00 6611 9.64 4.20 16.10 837.00 5662 9.96 6.20 14.80 819.00 6265 844.00 15.18 4.50 67.00 5167 15.84 8.10 48.20 686.00 424 6.72 5.30 11.00 78.00 6917 8.19 5.20 12.70 859.00 7031 11.10 5.30 22.60 858.00 7003 10.47 5.80 17.80 879.00 6305 11.44 3.10 22.90 807.00 5180 11.44 5.20 48.50 836.00 3564 15.09 3.50 37.10 697.00 2591 8.14 3.00 11.30 422.00 1846 8.33 4.70 15.30 227.00 6247 849.00 9.83 3.10 17.90 6354 8.80 2.80 16.20 840.00 2845 9.87 8.20 13.80 456.00 4480 12.45 4.60 31.80 846.00 4467 9.34 4.50 18.40 538.00 6361 10.85 5.80 21.70 743.00 7195 9.04 5.40 13.20 868.00 7375 10.98 3.20 56.80 854.00 6580 836.00 12.41 4.40 32.80 5899 9.49 3.70 22.50 782.00 5992 16.60 4.20 58.30 798.00 4038 7.59 6.50 9.70 566.00 5268 798.00 7.12 5.50 9.50 4064 7.08 5.40 9.80 815.00 864 6.75 4.90 8.90 138.00 2661 8.20 4.90 10.50 424.00 5122 8.59 4.00 11.70 777.00 3605 8.75 3.40 17.30 433.00 7455 9.63 6.40 14.20 929.00 5171 11.66 5.30 35.50 830.00 5535 13.26 5.50 34.30 777.00 7396 10.41 3.10 16.70 853.00 5470 14.70 3.20 45.50 761.00 1592 7.91 4.80 16.20 225.00 5454 11.53 3.40 27.10 766.00 5491 17.38 5.00 40.40 652.00 1472 5.74 5.10 6.60 213.00 3982 8.85 5.80 12.50 627.00 7496 7.74 2.80 14.20 915.00 5482 6.96 3.10 9.60 783.00 4947 10.22 6.10 18.00 744.00 3298 518.00 9.23 5.80 33.50 1556 9.72 5.40 24.70 217.00 3939 6.88 4.90 8.30 586.00 4615 8.76 5.60 12.00 733.00 7589 863.00 7.61 3.60 10.80 7985 10.25 4.10 18.00 915.00 7789 13.77 3.20 31.90 913.00 6497 10.83 6.60 22.20 850.00 6477 10.90 4.90 20.50 879.00 6944 16.78 6.20 39.10 880.00 7473 14.19 3.70 31.50 929.00 6864 16.83 5.40 36.60 825.00 6699 9.04 4.60 13.70 904.00 5671 11.42 3.80 22.00 835.00 6737 10.89 5.80 29.80 875.00 6196 13.43 6.50 29.70 903.00 5306 17.45 4.10 47.60 875.00 7096 9.40 5.20 15.20 901.00 6018 9.50 4.40 12.90 799.00 7746 24.66 4.00 57.60 890.00 7786 10.22 3.50 25.60 891.00 6933 10.99 3.60 36.70 872.00 4457 11.69 3.90 29.60 583.00 5291 719.00 10.45 5.70 21.90 7392 9.41 4.90 18.80 852.00 6823 10.65 6.00 20.20 853.00 5655 22.11 2.60 55.40 947.00 Rain in Method Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket

Day 3/22/2008 3/23/2008 3/24/2008 3/25/2008 3/26/2008 3/27/2008 3/28/2008 3/29/2008 3/30/2008 3/31/2008 4/1/2008 4/2/2008 4/3/2008 4/4/2008 4/5/2008 4/6/2008 4/7/2008 4/8/2008 4/9/2008 4/10/2008 4/11/2008 4/12/2008 4/13/2008 4/14/2008 4/15/2008 4/16/2008 4/17/2008 4/18/2008 4/19/2008 4/20/2008 4/21/2008 4/22/2008 4/23/2008 4/24/2008 4/25/2008 4/26/2008 4/27/2008 4/28/2008 4/29/2008 4/30/2008 5/1/2008 5/2/2008 5/3/2008 5/4/2008 5/5/2008 5/6/2008 5/7/2008 5/8/2008 5/9/2008 5/10/2008 5/11/2008 5/12/2008 5/13/2008 5/14/2008 5/15/2008 5/16/2008 5/17/2008 5/18/2008 5/19/2008 5/20/2008 5/21/2008 5/22/2008 5/23/2008 5/24/2008 5/25/2008 5/26/2008 5/27/2008 5/28/2008 5/29/2008 5/30/2008 5/31/2008 6/1/2008 6/2/2008 6/3/2008 6/4/2008 6/5/2008 6/6/2008 6/7/2008 6/8/2008 6/9/2008 6/10/2008 6/11/2008 6/12/2008 6/13/2008 6/14/2008 6/15/2008 6/16/2008 6/17/2008 6/18/2008 6/19/2008 6/20/2008 6/21/2008 6/22/2008 6/23/2008 6/24/2008 6/25/2008 6/26/2008 6/27/2008 6/28/2008 6/29/2008 6/30/2008 7/1/2008 7/2/2008 7/3/2008 7/4/2008 7/5/2008 7/6/2008

Daily Sum 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.01 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03 0.00 0.00 0.04 0.02 0.07 0.00 0.00 0.03 0.00 0.22 0.01 0.00 0.00 0.00 0.00 0.00 0.10 0.39 0.05 0.06 0.09 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.69 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.00 0.00 0.32 0.10 0.00 0.01 0.03 0.01 0.37 0.02 0.25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Revision 1
I:\06\2212A\0400\0401\Rev1\CH2\2_2Climate\0632212A_2_2_TBL2_2-5to8_23JUL10.xls\tbl2.2-7

Golder Assoicates

SHSH-1001/063-2212A

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 71.48 57.40 83.80 66.97 54.60 79.20 73.13 52.60 89.90 77.90 55.80 97.60 66.93 56.70 73.10 63.93 50.50 74.10 71.17 47.80 87.20 77.39 55.40 93.50 74.66 55.10 90.60 76.62 64.30 89.70 71.98 61.90 81.50 67.50 57.80 83.40 70.19 56.90 88.50 70.30 54.50 87.80 72.26 56.70 89.50 77.54 65.80 91.20 78.62 67.60 90.50 71.17 60.00 79.80 71.60 57.00 84.80 73.36 58.40 88.30 77.28 64.30 91.00 75.94 67.60 89.30 73.04 54.30 87.30 75.53 58.90 93.90 72.25 59.50 83.90 79.42 60.80 96.20 78.81 69.10 89.60 71.39 59.70 81.90 69.47 61.30 79.30 71.26 54.40 86.80 74.00 56.80 88.70 75.71 61.20 90.60 79.68 65.80 94.00 71.40 65.00 80.30 71.39 65.60 82.80 70.00 63.00 79.80 69.58 54.50 82.90 70.90 52.40 87.30 61.60 56.30 69.10 65.10 50.90 78.40 70.45 54.00 85.10 75.17 57.60 91.80 74.92 60.30 90.60 76.26 60.60 90.10 77.33 63.60 92.00 77.22 62.20 91.50 56.88 48.00 61.40 59.68 40.50 77.20 69.55 48.90 88.30 76.69 63.00 91.80 68.90 58.20 77.10 52.80 40.40 60.40 61.12 49.80 74.90 67.70 54.00 81.40 80.08 61.50 100.20 74.76 60.30 92.10 51.77 46.00 58.60 48.69 43.20 56.50 52.03 38.80 67.80 51.59 44.80 59.50 52.23 39.70 62.80 51.89 39.90 63.80 50.28 41.20 58.30 52.35 41.20 64.70 59.20 43.10 76.50 58.97 51.10 69.60 59.87 50.00 71.10 59.88 43.40 77.20 50.08 44.90 55.40 52.22 39.30 65.80 60.21 43.00 77.60 65.58 49.60 82.80 67.11 48.80 86.40 69.53 48.80 88.10 70.22 51.20 89.50 64.73 45.70 84.60 65.03 58.20 77.00 60.69 52.70 70.60 50.70 43.80 58.50 52.20 37.20 69.30 63.33 45.20 82.80 61.86 47.00 73.50 54.70 39.50 70.60 53.58 45.20 64.20 54.39 41.70 67.90 59.24 43.10 76.20 59.37 42.00 75.80 58.58 43.60 75.60 58.71 42.40 73.10 61.05 49.40 75.80 56.35 49.70 61.60 51.19 41.00 60.00 52.50 33.30 70.20 49.10 39.70 57.60 41.60 30.50 51.30 37.12 33.90 39.40 34.38 32.40 35.90 32.31 30.10 34.40 32.26 27.50 37.00 40.23 32.80 52.30 36.91 28.40 46.50 41.20 33.00 52.90 46.38 32.30 62.50 55.66 42.20 73.40 44.31 35.70 51.80 42.12 30.70 54.10 44.92 41.70 50.60 Barometric Pressure in Hg Ave Min Max 27.09 27.04 27.19 27.23 27.19 27.29 27.18 27.06 27.29 26.96 26.82 27.08 27.03 26.78 27.26 27.27 27.25 27.31 27.21 27.10 27.31 27.07 27.01 27.14 27.19 27.14 27.23 27.24 27.22 27.29 27.29 27.26 27.31 27.21 27.12 27.30 27.11 27.06 27.19 27.23 27.18 27.26 27.24 27.18 27.28 27.17 27.10 27.23 27.11 27.05 27.15 27.23 27.16 27.31 27.35 27.31 27.40 27.21 27.08 27.34 27.07 27.02 27.22 27.04 26.95 27.11 27.15 27.10 27.20 27.03 26.92 27.13 27.14 27.04 27.21 27.08 26.96 27.17 27.01 26.93 27.08 27.13 26.99 27.21 27.27 27.21 27.35 27.36 27.31 27.41 27.39 27.36 27.41 27.33 27.21 27.41 27.12 27.03 27.21 27.14 27.09 27.20 27.14 27.09 27.20 27.12 27.09 27.15 27.13 27.09 27.15 27.15 27.12 27.22 27.27 27.21 27.38 27.46 27.39 27.49 27.39 27.25 27.49 27.18 27.12 27.25 27.19 27.15 27.23 27.09 27.01 27.17 26.93 26.85 26.99 26.83 26.77 26.87 27.10 26.90 27.35 27.39 27.35 27.44 27.30 27.18 27.38 27.08 26.95 27.18 26.93 26.82 27.13 27.10 27.00 27.19 27.13 27.04 27.20 27.19 27.13 27.25 26.95 26.82 27.14 26.83 26.76 26.94 27.02 26.92 27.19 27.38 27.22 27.49 27.38 27.27 27.48 27.20 27.17 27.26 27.26 27.23 27.29 27.25 27.22 27.33 27.39 27.32 27.46 27.40 27.30 27.46 27.09 26.96 27.28 27.03 26.96 27.15 27.27 27.16 27.31 27.16 27.03 27.30 27.16 26.99 27.37 27.40 27.37 27.45 27.36 27.31 27.41 27.32 27.30 27.37 27.31 27.23 27.38 27.16 27.13 27.22 27.24 27.19 27.28 27.26 27.19 27.32 27.05 26.97 27.17 27.09 27.01 27.15 27.27 27.15 27.41 27.41 27.31 27.48 27.18 27.12 27.29 27.30 27.13 27.48 27.39 27.26 27.49 27.38 27.25 27.51 27.51 27.46 27.56 27.44 27.40 27.46 27.41 27.31 27.47 27.22 27.16 27.30 27.16 27.12 27.20 26.98 26.88 27.12 26.94 26.89 27.00 27.18 27.01 27.34 27.23 27.05 27.35 27.19 27.12 27.26 27.29 27.24 27.33 27.32 27.25 27.42 27.41 27.34 27.46 27.22 27.15 27.33 27.32 27.29 27.36 27.30 27.21 27.41 27.49 27.43 27.53 27.42 27.37 27.49 27.36 27.26 27.42 27.15 27.06 27.25 27.38 27.13 27.57 27.48 27.24 27.59 27.20 27.06 27.41 Relative Humidity % Ave Min Max 46.10 21.90 82.60 45.13 22.80 74.50 34.20 15.10 57.10 37.85 6.40 84.80 36.93 21.20 57.30 38.65 28.30 54.90 31.22 10.90 64.20 27.08 9.30 54.60 47.95 22.80 82.50 44.25 17.40 79.00 47.40 26.80 70.90 65.76 34.20 84.40 64.64 19.80 90.90 57.01 19.80 85.60 62.47 29.90 90.10 59.54 34.40 79.80 52.16 23.40 81.70 56.93 39.90 78.20 45.30 23.10 76.20 51.36 37.80 67.00 50.13 25.80 79.60 58.57 16.50 90.00 39.69 19.30 73.00 47.07 27.90 66.50 42.06 11.40 85.90 42.31 18.20 61.10 48.00 21.80 70.60 60.00 35.60 83.60 54.06 25.00 85.50 36.80 15.00 62.60 41.67 19.20 70.90 48.03 29.00 68.30 48.84 24.70 74.90 69.80 51.90 80.40 74.43 58.10 85.00 61.87 33.80 86.60 42.08 19.50 71.00 38.95 16.40 70.00 65.80 51.00 82.80 62.84 35.30 90.70 51.46 28.10 77.30 44.19 17.80 77.30 50.51 23.10 83.00 44.10 24.00 68.10 49.28 29.50 68.00 46.55 19.70 75.90 69.83 52.00 87.30 52.78 22.40 85.30 48.29 28.30 69.20 56.75 32.50 79.80 53.75 25.20 81.20 63.45 45.70 79.60 44.96 20.30 74.10 35.15 18.10 54.30 30.26 10.10 49.60 48.98 20.00 81.70 86.23 78.30 90.30 74.44 55.30 89.20 67.52 33.10 86.40 75.30 53.20 90.30 65.77 37.40 89.80 63.15 39.10 82.00 59.62 35.30 85.00 49.04 24.90 76.40 45.92 26.60 63.20 68.03 41.00 83.00 62.79 35.10 84.60 55.90 30.00 77.30 81.38 74.60 87.10 59.73 30.00 85.80 44.78 21.10 69.90 39.03 21.50 55.80 47.05 17.00 73.50 47.38 17.20 85.60 26.84 7.50 51.10 49.34 11.50 83.60 64.43 42.70 81.90 64.34 38.00 90.00 70.98 38.10 89.70 60.35 28.20 89.10 49.09 14.30 81.90 46.22 23.60 86.40 63.66 36.70 90.20 53.34 25.80 79.50 39.46 22.90 56.20 41.97 24.20 57.60 50.60 25.70 79.90 48.95 23.10 74.20 51.18 25.80 76.50 60.54 41.20 79.00 78.77 57.10 89.70 58.90 34.20 88.60 47.14 21.70 74.90 50.89 24.60 85.90 48.25 26.80 78.60 84.35 77.90 88.40 86.36 80.60 89.30 87.47 83.30 89.40 78.20 68.10 84.00 71.18 51.70 82.60 59.95 32.30 85.60 53.60 33.70 74.10 62.85 35.60 82.00 56.43 29.10 77.30 68.33 39.90 86.90 58.84 42.10 76.30 65.79 53.60 87.30 Wind Speed mph Ave Min Max 12.67 4.30 20.00 9.84 3.80 16.30 9.97 4.70 16.80 11.16 2.00 18.20 18.38 7.10 33.00 18.65 5.80 29.90 7.05 3.00 11.00 11.67 6.20 16.40 11.69 2.90 24.90 9.88 5.30 15.30 7.46 2.60 12.20 11.44 3.50 21.50 7.63 2.10 21.20 8.67 5.00 17.80 8.13 3.40 16.60 19.18 9.70 24.80 13.91 3.80 24.30 8.95 5.60 14.30 7.57 5.00 9.40 11.87 6.10 17.20 8.26 4.00 18.80 11.35 5.80 19.90 7.68 2.90 12.00 10.81 4.70 18.60 9.06 3.50 13.10 16.67 7.60 24.00 13.53 3.70 24.60 10.33 4.50 18.20 9.16 3.20 14.00 6.76 2.90 11.50 8.34 4.90 15.00 12.25 7.80 17.10 11.33 5.00 17.20 12.55 5.50 18.20 13.66 5.50 23.30 9.03 4.50 14.00 8.38 4.50 13.00 10.45 3.30 16.60 8.60 2.70 14.40 5.23 1.80 8.20 11.14 5.00 16.60 10.37 3.90 15.90 10.77 7.20 15.70 13.75 7.00 20.30 11.74 5.70 15.70 11.25 5.30 22.10 19.02 7.50 33.40 6.68 4.70 8.00 10.53 5.50 21.30 15.53 7.70 19.50 14.22 7.00 21.00 10.07 4.80 18.20 11.65 5.20 14.70 9.55 1.80 13.00 13.17 3.60 23.90 11.08 3.60 21.00 11.35 7.50 15.00 11.95 3.50 16.10 8.43 3.40 15.50 12.09 6.70 18.10 8.42 1.90 13.30 7.99 2.90 13.40 7.83 2.10 12.00 6.72 2.80 11.20 13.14 7.70 20.60 10.00 3.80 19.80 8.61 4.50 12.10 10.82 5.60 17.20 12.12 6.60 19.30 8.80 5.70 10.90 10.84 6.40 14.50 9.47 5.20 14.40 12.06 6.40 17.10 8.10 3.90 15.20 6.45 3.00 8.90 12.37 5.30 20.50 15.18 4.30 25.10 7.31 3.30 11.90 12.20 4.80 20.20 10.81 5.30 19.50 8.19 3.00 14.70 10.93 4.60 18.50 13.59 3.30 21.40 11.78 8.30 16.30 7.37 2.30 9.90 9.05 4.30 12.40 4.23 1.70 5.90 6.49 2.50 10.00 13.38 5.00 24.00 21.14 13.20 31.80 14.53 7.00 23.80 12.94 7.50 20.90 9.39 2.50 15.70 10.85 1.00 21.40 7.83 3.50 13.00 9.11 2.80 15.20 14.36 9.80 19.00 13.16 9.40 18.40 16.21 10.30 20.00 15.08 9.00 21.20 9.67 2.30 15.40 8.06 3.00 14.70 9.94 4.40 14.10 11.40 8.00 19.10 8.83 3.50 12.40 13.44 2.10 24.70 15.37 8.30 24.80 Wind Direction compass deg Ave Min Max 280.54 196.00 349.00 278.00 11.00 340.00 210.83 40.00 300.00 187.42 18.00 317.00 282.13 227.00 322.00 287.08 249.00 324.00 260.83 106.00 318.00 231.04 3.00 328.00 88.75 38.00 169.00 181.58 12.00 353.00 120.58 3.00 341.00 133.00 23.00 219.00 185.92 3.00 357.00 163.21 4.00 354.00 100.83 27.00 131.00 155.25 140.00 170.00 237.67 141.00 351.00 278.71 4.00 351.00 210.00 1.00 355.00 85.54 46.00 129.00 138.46 21.00 337.00 188.83 37.00 328.00 246.38 10.00 348.00 132.54 26.00 340.00 233.71 11.00 347.00 167.63 137.00 197.00 111.83 5.00 351.00 192.21 1.00 337.00 264.58 113.00 312.00 173.75 10.00 332.00 165.21 4.00 360.00 121.17 66.00 173.00 145.08 52.00 215.00 87.63 34.00 151.00 160.42 56.00 205.00 273.83 151.00 343.00 272.08 217.00 336.00 267.42 214.00 338.00 246.38 10.00 317.00 242.54 109.00 354.00 211.50 182.00 244.00 233.96 22.00 353.00 81.08 30.00 142.00 158.42 127.00 196.00 164.21 123.00 187.00 151.29 0.00 359.00 278.38 252.00 309.00 179.83 12.00 342.00 118.50 63.00 155.00 157.92 136.00 179.00 220.58 81.00 313.00 193.33 126.00 303.00 261.04 225.00 293.00 244.75 128.00 283.00 198.29 152.00 349.00 202.21 2.00 359.00 224.71 8.00 351.00 286.83 245.00 312.00 156.96 68.00 242.00 259.04 147.00 305.00 265.08 31.00 320.00 268.88 212.00 328.00 306.46 1.00 354.00 248.67 115.00 317.00 170.33 151.00 199.00 202.46 1.00 357.00 306.46 5.00 353.00 223.33 204.00 241.00 282.29 219.00 338.00 280.88 236.00 328.00 261.08 232.00 294.00 144.50 27.00 318.00 126.92 75.00 167.00 266.17 152.00 334.00 222.33 31.00 359.00 96.92 17.00 154.00 143.25 90.00 175.00 239.92 7.00 348.00 257.04 177.00 345.00 197.29 162.00 244.00 216.00 177.00 323.00 119.13 3.00 356.00 135.08 61.00 180.00 282.04 196.00 343.00 275.63 19.00 344.00 238.96 6.00 350.00 135.63 10.00 232.00 140.63 25.00 279.00 124.79 77.00 155.00 131.79 108.00 151.00 172.00 126.00 283.00 266.42 237.00 292.00 230.67 197.00 274.00 269.00 241.00 300.00 171.75 7.00 330.00 64.00 5.00 358.00 24.33 16.00 35.00 202.50 11.00 359.00 249.42 228.00 272.00 246.96 216.00 305.00 267.75 101.00 322.00 166.71 111.00 237.00 230.42 195.00 269.00 234.25 217.00 281.00 313.58 7.00 353.00 166.96 111.00 339.00 248.13 149.00 319.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 7022 10.00 4.70 24.30 846.00 6677 10.76 4.20 22.50 877.00 6199 12.48 2.70 27.30 713.00 7525 888.00 13.55 3.70 64.00 6733 8.85 4.20 14.00 885.00 6647 8.18 4.00 11.10 840.00 7499 17.98 3.50 41.50 875.00 7481 9.57 3.60 16.40 875.00 6923 15.64 5.40 51.10 875.00 6905 17.80 4.90 46.50 811.00 6585 19.81 5.60 49.00 784.00 5127 809.00 12.23 4.20 34.20 6503 19.90 5.10 58.30 844.00 6032 14.76 3.70 53.60 863.00 7140 12.63 5.60 29.10 848.00 6080 774.00 7.98 6.40 10.30 6885 10.10 4.20 15.60 835.00 5539 11.32 6.10 21.60 803.00 6582 15.95 4.90 43.30 844.00 5694 8.72 5.30 14.20 827.00 6605 21.67 4.00 51.80 856.00 5882 12.54 5.60 39.30 809.00 6962 14.38 4.40 37.30 835.00 6153 12.85 7.20 41.10 824.00 7037 14.24 4.50 36.30 850.00 6732 8.05 5.10 12.60 832.00 6629 12.35 6.20 35.00 821.00 6418 13.73 4.90 30.60 873.00 6100 13.47 5.10 45.30 836.00 6840 23.49 3.00 59.00 843.00 5917 17.00 4.20 52.90 824.00 5883 10.74 4.50 23.90 776.00 4241 12.88 6.00 34.30 752.00 3492 8.11 5.00 24.90 611.00 3680 775.00 12.57 4.70 31.70 5128 14.06 3.50 33.30 790.00 6711 11.87 3.30 26.40 813.00 6113 9.60 3.80 17.50 813.00 3535 608.00 11.36 3.90 33.20 6307 22.14 3.30 60.10 822.00 6519 8.08 3.60 22.40 794.00 6524 11.20 3.00 45.00 800.00 6299 10.13 4.00 29.50 770.00 6415 8.53 5.70 19.70 783.00 6134 10.38 5.80 23.10 754.00 5340 16.30 5.80 26.00 700.00 4090 8.78 6.80 18.00 600.00 6261 16.90 4.00 53.00 782.00 6007 9.59 4.30 17.80 752.00 5955 747.00 8.56 6.10 13.30 3502 10.54 6.10 35.10 686.00 1920 10.28 3.60 21.40 328.00 6056 9.67 4.00 20.00 764.00 5984 11.97 4.20 26.70 755.00 5448 10.30 5.30 36.60 742.00 4443 11.40 5.50 30.80 717.00 986 8.72 6.40 10.20 166.00 3492 511.00 9.01 4.30 14.90 3491 8.70 3.60 22.60 653.00 3857 8.65 5.00 11.90 693.00 3964 11.38 4.00 29.80 587.00 3593 605.00 10.27 3.50 36.70 3657 11.51 6.50 24.70 529.00 5232 13.22 5.10 39.50 691.00 5340 8.60 6.00 12.30 710.00 2141 15.82 5.60 60.90 454.00 4595 11.00 3.20 24.60 636.00 4906 7.72 4.00 16.70 683.00 1262 7.73 3.50 17.80 247.00 5166 10.27 3.80 26.10 694.00 5076 7.68 3.00 16.90 680.00 5029 9.33 1.80 25.40 677.00 4931 7.80 4.70 13.70 675.00 4807 13.76 2.70 43.40 659.00 4557 14.53 4.10 33.60 639.00 4614 7.71 4.40 13.40 644.00 2656 10.29 6.30 35.80 699.00 2739 13.14 6.40 32.50 520.00 2501 7.98 4.30 11.60 429.00 3736 7.16 4.00 13.90 603.00 3585 527.00 9.61 2.80 43.30 4017 13.24 3.40 54.80 594.00 3634 9.68 5.90 29.50 582.00 2328 7.37 3.10 12.10 456.00 4306 604.00 13.06 4.10 33.80 4202 8.22 2.80 18.50 600.00 4181 22.04 3.70 56.90 599.00 4142 14.03 2.40 43.90 595.00 4029 10.41 6.40 25.10 586.00 3350 7.60 6.20 9.50 554.00 704 7.33 6.00 9.10 149.00 3634 7.48 2.90 10.70 540.00 3418 10.32 4.10 51.00 538.00 3576 8.85 4.80 23.60 558.00 2421 13.63 3.80 62.30 431.00 530 9.21 5.00 45.50 107.00 397 5.23 4.60 6.40 72.00 1727 6.46 4.70 10.20 374.00 3220 5.92 5.10 7.00 540.00 3190 6.77 4.10 11.80 564.00 3807 9.64 4.60 26.50 584.00 3086 8.51 3.80 14.60 592.00 3492 7.95 3.20 34.90 543.00 2632 517.00 5.19 3.30 7.40 1560 8.24 3.20 14.90 262.00 2902 10.55 5.00 36.30 471.00 1141 8.15 6.00 11.90 323.00 Rain in Method Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Tipping Bucket

Day 7/7/2008 7/8/2008 7/9/2008 7/10/2008 7/11/2008 7/12/2008 7/13/2008 7/14/2008 7/15/2008 7/16/2008 7/17/2008 7/18/2008 7/19/2008 7/20/2008 7/21/2008 7/22/2008 7/23/2008 7/24/2008 7/25/2008 7/26/2008 7/27/2008 7/28/2008 7/29/2008 7/30/2008 7/31/2008 8/1/2008 8/2/2008 8/3/2008 8/4/2008 8/5/2008 8/6/2008 8/7/2008 8/8/2008 8/9/2008 8/10/2008 8/11/2008 8/12/2008 8/13/2008 8/14/2008 8/15/2008 8/16/2008 8/17/2008 8/18/2008 8/19/2008 8/20/2008 8/21/2008 8/22/2008 8/23/2008 8/24/2008 8/25/2008 8/26/2008 8/27/2008 8/28/2008 8/29/2008 8/30/2008 8/31/2008 9/1/2008 9/2/2008 9/3/2008 9/4/2008 9/5/2008 9/6/2008 9/7/2008 9/8/2008 9/9/2008 9/10/2008 9/11/2008 9/12/2008 9/13/2008 9/14/2008 9/15/2008 9/16/2008 9/17/2008 9/18/2008 9/19/2008 9/20/2008 9/21/2008 9/22/2008 9/23/2008 9/24/2008 9/25/2008 9/26/2008 9/27/2008 9/28/2008 9/29/2008 9/30/2008 10/1/2008 10/2/2008 10/3/2008 10/4/2008 10/5/2008 10/6/2008 10/7/2008 10/8/2008 10/9/2008 10/10/2008 10/11/2008 10/12/2008 10/13/2008 10/14/2008 10/15/2008 10/16/2008 10/17/2008 10/18/2008 10/19/2008 10/20/2008 10/21/2008

Daily Sum 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.30 0.00 0.42 0.00 0.00 0.02 0.00 0.00 0.00 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.04 0.00 0.00 0.00 0.00 0.00 1.11 0.04 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.16 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.02 0.15 0.16 0.04 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.01 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.34 0.00 0.44 0.00 0.01 0.10 0.37 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14

Revision 1
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Golder Assoicates

SHSH-1001/063-2212A

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 39.47 31.20 48.90 37.15 22.70 54.80 42.61 31.90 56.80 44.71 40.50 53.80 31.70 23.40 39.00 29.23 15.90 45.40 43.60 27.20 65.10 52.52 36.30 76.40 51.70 41.90 67.90 46.58 33.60 62.40 49.67 36.20 68.60 54.03 42.80 71.10 50.76 37.90 58.20 45.83 37.40 56.30 38.48 30.30 44.90 26.69 23.50 30.00 21.49 18.70 24.40 23.03 13.80 30.80 14.80 9.50 23.50 17.51 12.30 24.70 32.04 25.50 41.10 36.37 30.90 42.80 42.33 35.90 49.70 30.55 28.10 35.70 30.03 17.00 40.60 34.41 28.40 39.10 28.14 25.30 30.90 42.85 26.30 64.70 31.51 23.70 42.10 20.08 16.00 27.20 21.06 17.00 23.60 27.75 21.10 35.40 33.18 26.10 39.50 27.82 18.00 40.30 34.53 25.00 46.50 34.31 27.70 44.90 28.33 21.40 40.50 27.25 18.60 38.40 28.75 22.80 35.70 28.81 22.50 35.00 29.13 16.30 42.40 31.33 17.20 44.60 15.92 9.20 23.20 9.03 6.30 12.50 24.79 8.60 35.80 19.65 11.90 30.00 31.26 19.90 40.00 18.75 4.00 36.90 17.06 7.90 28.60 35.05 24.90 41.20 31.25 24.40 37.20 26.38 18.90 36.40 10.92 -5.80 23.70 -15.07 -19.10 -7.20 -19.54 -24.00 -11.70 -13.73 -21.40 -3.10 3.24 -10.20 18.20 -2.58 -8.60 4.50 -1.36 -5.40 5.00 -11.72 -14.50 -6.50 -13.63 -17.60 -5.80 -3.12 -16.50 5.50 -1.17 -4.50 3.20 1.79 -10.10 16.40 12.38 5.40 25.60 6.83 4.20 9.00 10.63 2.70 17.60 28.13 13.20 38.40 18.85 16.50 33.80 6.84 -6.30 15.90 7.14 -8.20 29.50 15.14 -2.00 30.40 6.83 0.90 10.90 -5.65 -13.00 9.30 1.02 -13.50 13.40 11.91 2.50 21.70 20.34 15.30 24.60 12.43 7.40 18.50 19.25 7.50 28.70 10.01 -0.90 26.00 19.85 -0.10 33.10 24.55 12.20 33.70 10.60 1.30 29.50 19.25 0.80 36.40 -7.85 -18.40 -1.90 -5.00 -21.30 14.40 28.48 16.30 38.80 29.35 26.10 33.80 33.39 27.30 37.60 30.55 28.10 34.60 28.91 19.10 37.10 28.80 21.80 38.90 22.91 12.40 37.00 -2.27 -10.50 9.40 -7.04 -14.70 1.20 -2.57 -8.30 3.70 -5.46 -12.10 3.90 4.00 -10.00 18.50 23.85 18.70 29.00 23.35 17.80 28.20 35.11 28.80 39.50 34.22 26.00 40.70 22.47 17.30 26.60 8.01 3.60 16.20 14.73 6.50 23.40 26.82 13.00 41.30 35.83 27.40 42.60 Barometric Pressure in Hg Ave Min Max 27.55 27.43 27.62 27.34 27.19 27.52 27.17 26.97 27.27 26.98 26.89 27.18 27.52 27.20 27.72 27.66 27.52 27.75 27.47 27.41 27.51 27.22 27.10 27.40 27.23 27.09 27.46 27.51 27.45 27.55 27.32 27.22 27.43 27.05 26.84 27.21 26.91 26.80 27.02 26.87 26.74 27.02 26.84 26.72 26.95 27.14 26.96 27.23 27.25 27.22 27.31 27.31 27.26 27.33 27.20 27.15 27.25 27.15 27.12 27.18 27.10 27.05 27.14 26.89 26.65 27.05 26.74 26.64 26.94 27.28 26.95 27.51 27.32 27.16 27.50 27.36 27.22 27.50 27.56 27.44 27.63 27.17 27.06 27.41 27.48 27.15 27.75 27.81 27.58 27.92 27.22 27.10 27.53 27.17 27.12 27.22 27.30 27.17 27.40 27.31 27.21 27.38 27.20 27.16 27.24 27.21 27.13 27.34 27.34 27.21 27.42 27.07 27.02 27.20 27.05 27.01 27.09 27.15 27.04 27.23 27.00 26.70 27.22 26.94 26.70 27.28 27.37 27.30 27.49 27.53 27.40 27.60 27.04 26.90 27.37 27.23 27.08 27.37 26.94 26.87 27.04 27.08 26.85 27.40 27.34 27.18 27.43 27.17 27.06 27.24 27.28 27.22 27.34 26.97 26.73 27.26 26.78 26.64 27.08 27.29 27.10 27.45 27.51 27.42 27.58 27.17 27.06 27.40 27.06 26.99 27.13 27.23 27.16 27.29 27.16 27.11 27.25 27.33 27.27 27.40 27.52 27.40 27.63 27.02 26.82 27.38 26.91 26.82 27.01 26.96 26.92 27.00 26.75 26.58 26.94 26.74 26.58 26.92 26.90 26.84 26.95 26.89 26.82 26.97 27.20 26.92 27.37 27.28 26.92 27.57 27.14 26.77 27.51 26.91 26.80 27.00 26.80 26.64 26.96 27.15 26.83 27.34 27.28 27.17 27.34 26.82 26.66 27.14 26.75 26.66 26.85 26.84 26.75 26.95 26.83 26.72 26.95 27.26 26.76 27.50 27.26 27.17 27.44 27.21 27.00 27.36 27.40 27.00 27.63 27.08 26.89 27.40 27.61 27.35 27.73 27.58 27.36 27.74 27.20 27.10 27.33 27.32 27.22 27.37 27.32 27.23 27.39 27.42 27.31 27.50 27.28 27.21 27.45 27.12 27.03 27.21 27.06 26.95 27.36 27.66 27.41 27.76 27.59 27.51 27.70 27.47 27.42 27.51 27.49 27.45 27.53 27.17 26.87 27.46 26.96 26.84 27.14 27.20 27.11 27.25 27.13 26.98 27.22 26.92 26.77 27.07 27.23 27.07 27.32 27.36 27.30 27.40 27.42 27.39 27.45 27.23 27.12 27.40 27.10 26.97 27.15 Relative Humidity % Ave Min Max 55.48 31.40 74.20 50.50 11.90 75.00 48.76 18.70 69.60 50.69 36.30 71.50 33.45 27.00 41.40 34.23 17.20 53.60 38.18 16.80 55.90 38.13 13.30 55.70 44.82 20.10 62.00 54.29 31.00 75.60 56.46 30.50 78.60 51.00 25.80 66.30 60.65 41.40 82.00 61.33 46.90 77.30 87.23 77.60 89.90 84.04 78.70 87.00 79.36 76.70 84.20 80.70 67.50 85.70 74.07 56.90 81.40 81.93 79.80 85.30 81.89 72.30 85.50 84.35 79.40 89.10 76.04 57.10 88.10 76.51 72.30 83.60 72.33 59.90 81.80 70.29 62.50 74.20 73.29 65.00 80.50 58.24 28.30 81.00 74.05 61.40 83.90 67.84 52.60 76.80 76.35 65.40 84.00 77.41 61.30 85.30 65.22 56.90 73.10 66.28 52.10 75.10 59.24 45.20 71.60 66.55 49.90 78.70 68.78 40.20 79.20 66.94 47.50 75.80 74.51 64.80 81.80 72.37 66.30 77.60 70.80 47.30 82.50 60.85 50.80 69.80 70.23 64.80 77.50 66.48 60.40 71.70 69.50 53.60 80.30 74.23 62.80 82.00 80.35 73.10 85.40 79.72 75.10 87.30 72.75 59.00 78.10 67.19 62.20 76.00 71.07 54.10 83.60 71.80 55.70 81.40 77.10 68.50 84.50 60.94 57.40 67.30 58.70 53.60 61.10 58.12 47.10 61.90 61.75 53.60 67.40 67.51 60.60 70.60 68.95 64.20 71.60 60.88 55.10 64.30 60.58 55.10 65.40 66.76 62.10 75.00 69.03 64.30 74.00 64.62 55.90 69.80 63.13 50.80 72.30 72.91 70.30 74.80 64.72 57.30 74.70 66.01 55.70 78.30 79.79 77.50 83.60 73.65 65.10 79.80 70.59 63.70 75.30 64.31 57.90 72.40 69.04 64.90 74.10 64.14 59.80 72.40 59.90 55.10 63.40 59.51 47.90 66.00 72.35 65.60 80.80 73.63 65.50 81.30 80.78 73.20 86.10 74.45 68.60 85.00 70.30 62.30 73.50 78.35 69.80 88.00 73.68 64.30 83.70 76.60 71.20 83.20 64.68 55.60 69.40 68.49 62.80 79.50 72.15 61.00 80.70 71.76 66.40 76.90 66.83 60.50 74.10 69.94 66.70 75.00 63.33 53.30 75.30 63.71 58.90 73.70 68.33 58.40 74.30 65.65 58.30 73.40 61.55 52.60 67.00 61.56 55.60 67.40 63.69 53.20 68.80 62.49 56.90 67.90 70.97 59.60 81.00 72.55 65.20 83.50 73.88 62.30 85.40 60.33 51.50 79.00 63.15 52.80 77.90 65.19 59.00 73.30 76.34 70.20 81.80 69.61 55.30 80.90 62.53 54.30 70.60 Wind Speed mph Ave Min Max 11.28 3.20 18.10 10.27 4.30 16.80 9.64 4.10 12.20 15.99 10.30 22.20 24.11 10.90 32.30 8.11 5.60 11.90 7.63 2.90 11.20 11.53 7.00 19.70 11.03 2.60 16.80 9.04 2.50 17.50 9.04 3.10 16.10 10.55 2.50 19.40 14.36 6.80 24.30 8.14 4.00 13.20 13.62 5.10 24.80 26.35 22.60 30.60 15.83 11.00 25.20 5.66 2.40 10.50 6.35 2.20 11.50 11.00 9.30 14.60 10.50 7.20 15.50 12.03 7.30 17.70 13.05 5.20 19.10 17.31 10.10 23.60 10.64 6.10 15.60 11.10 4.60 14.80 9.11 3.70 15.70 13.86 7.70 18.40 12.53 8.30 17.00 9.16 3.70 16.10 12.45 4.60 20.00 8.21 2.10 13.20 11.03 7.40 13.40 9.25 4.10 14.80 9.17 3.30 14.40 10.53 4.90 15.50 10.88 5.20 16.50 10.73 6.40 15.50 12.05 9.30 16.50 14.18 5.00 21.40 11.16 6.60 16.10 14.04 8.10 18.20 14.07 8.30 21.90 13.58 10.20 18.00 16.91 11.50 21.30 9.65 2.50 15.50 9.31 2.70 19.00 11.98 3.30 19.00 10.50 5.20 18.70 13.68 8.30 17.80 14.04 11.40 16.30 10.51 2.70 16.90 19.72 8.90 28.60 18.03 14.80 22.30 14.34 9.80 19.50 8.28 5.30 15.40 9.11 5.80 13.10 9.95 5.20 15.30 11.29 3.10 17.90 18.83 15.00 22.70 13.35 3.70 22.80 11.14 3.10 16.60 11.83 6.90 16.40 10.48 5.70 15.80 6.89 2.40 11.20 14.01 2.90 23.10 13.71 9.60 18.10 15.93 9.70 25.90 14.11 4.40 22.90 11.05 3.00 23.10 10.21 3.10 20.80 14.87 2.90 23.60 14.88 5.80 23.20 17.44 11.30 22.30 15.24 9.30 20.10 12.47 9.10 17.00 14.81 8.60 23.60 6.42 2.90 10.90 7.98 5.20 11.20 14.57 5.50 21.70 14.40 9.00 18.90 12.53 5.20 28.10 15.16 2.20 30.40 19.03 6.90 32.90 8.05 2.80 21.20 9.38 2.60 16.30 17.62 11.20 29.80 19.30 14.80 22.90 16.00 5.20 25.70 16.56 10.00 23.30 16.00 9.90 21.80 9.37 5.90 18.50 16.15 7.10 28.80 15.71 7.00 22.00 8.39 4.60 12.20 9.76 5.60 13.00 8.07 5.40 11.20 13.72 8.30 19.40 17.99 12.00 21.30 12.67 3.90 22.30 16.10 12.00 21.50 20.42 11.50 26.50 16.53 8.50 24.10 9.00 5.60 13.10 9.07 4.10 13.40 11.78 4.50 19.20 11.13 8.30 14.00 Wind Direction compass deg Ave Min Max 304.54 251.00 345.00 210.38 176.00 267.00 241.63 6.00 337.00 280.71 237.00 328.00 297.83 282.00 312.00 227.38 174.00 290.00 255.88 217.00 349.00 225.96 204.00 255.00 268.29 112.00 332.00 162.13 106.00 229.00 226.75 159.00 314.00 159.17 68.00 347.00 243.46 182.00 276.00 105.46 41.00 240.00 207.79 0.00 358.00 333.58 322.00 346.00 322.00 307.00 339.00 293.75 227.00 348.00 145.42 50.00 234.00 151.42 133.00 178.00 208.88 175.00 233.00 225.75 205.00 258.00 268.88 208.00 324.00 300.42 281.00 328.00 245.92 206.00 301.00 321.58 279.00 359.00 171.21 15.00 335.00 229.75 172.00 282.00 317.21 272.00 345.00 258.33 16.00 345.00 135.33 4.00 343.00 237.38 193.00 346.00 273.46 256.00 304.00 229.67 180.00 265.00 254.25 218.00 305.00 244.50 198.00 305.00 250.08 209.00 281.00 249.29 189.00 291.00 290.79 253.00 316.00 304.04 249.00 338.00 232.25 188.00 295.00 305.13 243.00 343.00 294.46 248.00 329.00 283.71 235.00 312.00 263.13 209.00 322.00 209.17 4.00 358.00 204.54 2.00 293.00 169.67 6.00 356.00 241.54 218.00 292.00 258.42 210.00 291.00 279.71 248.00 322.00 213.83 66.00 275.00 89.29 1.00 357.00 313.88 288.00 352.00 260.50 234.00 285.00 228.33 205.00 248.00 229.08 202.00 261.00 167.75 17.00 333.00 188.54 83.00 321.00 286.83 280.00 296.00 265.04 202.00 300.00 98.67 46.00 178.00 267.92 7.00 346.00 224.83 215.00 270.00 156.92 11.00 228.00 294.33 11.00 324.00 252.33 224.00 301.00 240.79 199.00 281.00 200.50 94.00 322.00 111.79 8.00 337.00 205.29 165.00 247.00 262.46 94.00 308.00 137.83 104.00 239.00 284.92 254.00 300.00 239.21 220.00 257.00 220.08 200.00 249.00 278.33 250.00 302.00 180.29 3.00 359.00 125.50 26.00 170.00 276.83 20.00 334.00 251.50 215.00 285.00 253.67 207.00 309.00 291.25 181.00 345.00 239.08 24.00 352.00 203.46 3.00 356.00 209.42 190.00 245.00 265.04 216.00 307.00 280.67 267.00 296.00 278.08 256.00 308.00 286.17 252.00 301.00 264.92 227.00 290.00 248.29 224.00 286.00 272.38 222.00 326.00 300.29 262.00 321.00 275.96 233.00 308.00 269.92 246.00 294.00 255.58 223.00 296.00 220.17 197.00 251.00 274.21 236.00 309.00 272.08 223.00 298.00 269.04 240.00 306.00 268.50 240.00 306.00 278.46 263.00 294.00 194.17 27.00 343.00 192.71 137.00 237.00 223.08 183.00 256.00 230.50 209.00 258.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 2833 9.44 4.50 24.40 462.00 2783 8.75 2.80 36.50 476.00 2684 9.63 3.20 41.40 459.00 2140 410.00 7.78 4.70 10.30 3301 8.16 7.20 9.10 527.00 3233 9.77 3.50 26.70 518.00 3209 7.52 2.30 28.40 516.00 3096 5.93 2.50 15.20 505.00 2917 9.77 3.90 43.50 499.00 2258 10.49 4.50 34.20 427.00 2137 10.08 2.70 35.90 400.00 1966 366.00 8.71 2.60 38.70 1819 6.72 3.10 9.80 339.00 1850 11.83 3.90 38.00 377.00 144 7.77 4.90 9.80 45.00 804 136.00 6.37 5.40 9.00 1643 6.43 5.30 8.00 289.00 2256 10.50 3.60 21.80 449.00 2656 8.94 4.00 37.60 461.00 1343 5.90 4.80 8.10 255.00 1815 4.96 2.80 8.10 317.00 916 5.68 2.90 15.00 217.00 1694 7.93 4.30 21.20 356.00 597 7.40 7.00 8.30 105.00 1612 6.20 3.80 8.60 339.00 942 7.96 7.10 9.70 255.00 990 7.34 5.40 12.30 199.00 1482 5.76 3.50 7.90 337.00 553 7.99 6.90 9.80 121.00 1746 11.64 5.10 32.60 329.00 415 6.25 3.80 8.70 85.00 1489 9.35 4.00 48.20 302.00 1578 6.34 4.70 8.70 368.00 1639 5.95 3.50 12.00 321.00 1564 300.00 8.53 4.00 27.50 1077 5.75 2.70 8.00 208.00 1590 6.24 3.40 8.30 306.00 1291 6.70 3.30 14.80 252.00 719 201.00 7.66 6.70 9.40 336 7.14 3.80 8.20 72.00 1426 6.34 3.80 15.60 279.00 698 7.63 3.60 10.70 133.00 911 7.60 5.50 9.30 167.00 789 7.28 4.70 8.70 150.00 522 6.35 4.40 8.10 121.00 1101 11.94 5.80 59.40 285.00 1250 8.65 3.70 21.70 247.00 525 9.95 4.70 36.80 123.00 1565 5.74 3.10 9.70 307.00 1138 299.00 6.75 4.50 9.80 1051 7.36 5.60 9.30 290.00 853 9.19 3.80 47.70 183.00 491 6.00 4.20 10.00 167.00 1027 7.05 6.60 9.10 211.00 1702 6.38 4.20 8.60 326.00 1451 6.41 4.20 9.50 304.00 1612 6.09 3.50 13.30 307.00 1567 284.00 8.88 4.60 29.70 958 8.41 4.60 28.10 205.00 1465 6.90 6.40 7.50 299.00 1566 7.66 4.80 17.40 302.00 992 194.00 7.52 4.30 15.10 1020 6.33 4.00 7.40 210.00 1600 5.60 3.30 16.20 312.00 1419 16.65 3.00 65.90 273.00 778 9.01 5.60 27.20 160.00 1634 4.60 3.00 6.20 316.00 1284 4.70 3.30 10.20 272.00 983 7.14 4.30 21.70 219.00 1427 7.64 3.50 29.70 279.00 1337 5.53 2.70 9.80 319.00 1526 10.89 4.60 32.30 338.00 931 6.45 4.80 11.60 227.00 1134 6.26 3.90 8.30 211.00 1735 3.84 1.90 5.10 328.00 1305 3.98 2.00 7.40 304.00 1098 6.04 3.30 10.30 208.00 1110 9.75 5.90 20.80 232.00 868 10.47 4.10 49.70 240.00 1339 6.89 3.90 10.80 340.00 1277 327.00 4.84 3.20 6.10 1227 5.13 3.40 7.80 287.00 1252 8.74 5.00 22.30 255.00 806 5.56 3.40 11.50 183.00 1707 354.00 7.32 3.30 14.40 1454 6.20 3.50 28.80 277.00 1887 4.61 3.60 5.50 348.00 1983 5.15 4.70 5.90 362.00 1767 6.43 4.50 14.30 363.00 2044 4.83 3.60 5.90 365.00 2212 5.47 2.60 10.50 389.00 1690 8.15 4.30 23.60 277.00 1978 5.35 3.10 13.50 462.00 2227 6.15 5.00 11.20 390.00 2156 8.58 4.90 20.60 377.00 2109 6.45 4.40 11.60 362.00 2207 7.21 3.50 18.60 407.00 2386 4.33 3.20 7.40 415.00 2079 5.14 3.70 6.20 400.00 2099 5.34 4.00 6.60 406.00 1968 4.91 3.80 5.80 399.00 2459 5.05 3.60 6.30 427.00 2564 5.56 4.70 6.40 437.00 2139 366.00 6.35 3.80 12.30 1934 5.19 3.50 8.20 329.00 2332 4.47 2.90 7.10 487.00 2609 4.99 3.00 13.20 456.00 Rain in Method Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket

Day 10/22/2008 10/23/2008 10/24/2008 10/25/2008 10/26/2008 10/27/2008 10/28/2008 10/29/2008 10/30/2008 10/31/2008 11/1/2008 11/2/2008 11/3/2008 11/4/2008 11/5/2008 11/6/2008 11/7/2008 11/8/2008 11/9/2008 11/10/2008 11/11/2008 11/12/2008 11/13/2008 11/14/2008 11/15/2008 11/16/2008 11/17/2008 11/18/2008 11/19/2008 11/20/2008 11/21/2008 11/22/2008 11/23/2008 11/24/2008 11/25/2008 11/26/2008 11/27/2008 11/28/2008 11/29/2008 11/30/2008 12/1/2008 12/2/2008 12/3/2008 12/4/2008 12/5/2008 12/6/2008 12/7/2008 12/8/2008 12/9/2008 12/10/2008 12/11/2008 12/12/2008 12/13/2008 12/14/2008 12/15/2008 12/16/2008 12/17/2008 12/18/2008 12/19/2008 12/20/2008 12/21/2008 12/22/2008 12/23/2008 12/24/2008 12/25/2008 12/26/2008 12/27/2008 12/28/2008 12/29/2008 12/30/2008 12/31/2008 1/1/2009 1/2/2009 1/3/2009 1/4/2009 1/5/2009 1/6/2009 1/7/2009 1/8/2009 1/9/2009 1/10/2009 1/11/2009 1/12/2009 1/13/2009 1/14/2009 1/15/2009 1/16/2009 1/17/2009 1/18/2009 1/19/2009 1/20/2009 1/21/2009 1/22/2009 1/23/2009 1/24/2009 1/25/2009 1/26/2009 1/27/2009 1/28/2009 1/29/2009 1/30/2009 1/31/2009 2/1/2009 2/2/2009 2/3/2009 2/4/2009 2/5/2009

Daily Sum 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.44 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.03 0.00 0.00 0.08 0.01 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.11 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02

Revision 1
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Golder Assoicates

SHSH-1001/063-2212A

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 2/6/2009 35.35 26.80 42.90 2/7/2009 26.92 18.90 35.20 2/8/2009 28.96 19.40 36.80 2/9/2009 32.74 29.60 34.20 2/10/2009 29.03 25.70 31.20 2/11/2009 23.65 17.10 29.70 2/12/2009 17.48 12.20 24.50 2/13/2009 11.73 2.70 23.10 2/14/2009 5.41 -2.90 12.70 2/15/2009 13.13 4.40 25.30 2/16/2009 12.22 4.60 19.20 2/17/2009 10.66 4.00 16.00 2/18/2009 10.42 2.10 22.40 2/19/2009 14.35 0.40 21.40 2/20/2009 14.69 2.20 25.40 2/21/2009 12.45 1.20 25.50 2/22/2009 10.21 2.70 16.80 2/23/2009 17.29 8.10 29.60 2/24/2009 22.75 12.30 35.20 2/25/2009 14.47 4.30 20.80 2/26/2009 0.26 -3.30 3.20 2/27/2009 -4.12 -8.50 2.40 2/28/2009 1.80 -9.10 12.90 3/1/2009 3.70 -6.80 14.80 3/2/2009 17.88 5.90 33.80 3/3/2009 28.41 13.30 45.20 3/4/2009 38.23 34.70 44.10 3/5/2009 35.25 29.80 41.90 3/6/2009 15.78 8.80 28.90 3/7/2009 17.33 4.40 29.20 3/8/2009 25.12 12.70 35.30 3/9/2009 2.43 -4.30 11.10 3/10/2009 -5.66 -11.30 0.10 3/11/2009 -6.69 -17.20 5.20 3/12/2009 8.39 -6.60 27.10 3/13/2009 23.26 7.60 38.70 3/14/2009 34.54 24.40 44.80 3/15/2009 38.47 27.20 52.90 3/16/2009 40.98 32.50 53.30 3/17/2009 37.49 30.90 47.20 3/18/2009 32.59 27.30 38.30 3/19/2009 33.47 26.50 40.80 3/20/2009 46.24 32.20 61.90 3/21/2009 44.98 36.90 55.00 3/22/2009 50.45 43.80 59.90 3/23/2009 30.13 21.90 42.50 3/24/2009 21.50 17.90 23.80 3/25/2009 21.00 14.50 29.30 3/26/2009 19.21 12.80 26.50 3/27/2009 19.00 5.50 28.60 3/28/2009 31.15 20.70 44.30 3/29/2009 25.83 22.50 28.80 3/30/2009 24.74 21.20 27.20 3/31/2009 21.81 11.80 34.20 4/1/2009 23.32 12.20 37.10 4/2/2009 25.54 12.90 33.50 4/3/2009 27.98 22.40 32.70 4/4/2009 27.06 24.70 30.50 4/5/2009 26.91 19.40 33.40 4/6/2009 21.61 12.30 28.20 4/7/2009 36.61 20.30 51.80 4/8/2009 34.66 29.60 38.30 4/9/2009 30.87 27.20 33.10 4/10/2009 33.54 30.20 38.10 4/11/2009 38.61 31.10 47.10 4/12/2009 47.62 36.50 61.10 4/13/2009 48.41 35.80 61.00 4/14/2009 53.31 43.60 65.00 4/15/2009 51.77 45.20 57.60 4/16/2009 42.61 39.30 48.80 4/17/2009 40.38 33.50 50.80 4/18/2009 42.83 36.40 53.90 4/19/2009 47.98 35.00 60.40 4/20/2009 50.22 38.40 61.70 4/21/2009 55.82 42.50 68.90 4/22/2009 59.34 40.70 79.00 4/23/2009 50.26 33.80 58.10 4/24/2009 33.88 30.30 40.10 Note break in data 5/28/2009 63.83 54.70 70.00 5/29/2009 63.21 48.20 78.30 5/30/2009 65.23 47.60 79.40 5/31/2009 67.45 54.40 77.30 6/1/2009 56.70 49.30 62.30 6/2/2009 50.68 38.50 61.50 53.72 39.20 65.30 6/3/2009 6/4/2009 59.30 43.20 72.60 6/5/2009 49.56 40.10 56.40 6/6/2009 36.86 32.60 46.40 6/7/2009 40.69 37.10 44.00 6/8/2009 47.57 40.60 56.80 6/9/2009 43.41 37.40 46.70 6/10/2009 49.49 38.40 58.70 6/11/2009 53.39 39.00 65.00 6/12/2009 59.65 43.50 72.90 6/13/2009 64.95 46.50 79.50 6/14/2009 65.51 54.60 74.50 6/15/2009 62.63 54.20 74.40 6/16/2009 62.22 55.10 72.70 6/17/2009 67.03 53.40 80.30 6/18/2009 64.93 56.20 77.10 6/19/2009 66.71 56.00 77.50 6/20/2009 70.46 53.60 83.10 6/21/2009 69.61 62.20 78.20 6/22/2009 67.27 56.50 78.30 6/23/2009 63.66 52.90 74.30 6/24/2009 63.81 50.20 76.90 Day Barometric Pressure in Hg Ave Min Max 26.81 26.74 26.96 27.20 26.88 27.36 27.12 26.84 27.31 26.59 26.48 26.80 26.72 26.47 26.98 27.04 26.98 27.14 27.27 27.13 27.38 27.41 27.38 27.43 27.38 27.34 27.40 27.34 27.30 27.40 27.12 26.97 27.30 26.90 26.82 27.04 27.24 27.05 27.31 27.27 27.14 27.31 27.23 27.02 27.43 27.43 27.40 27.49 27.52 27.46 27.57 27.21 27.09 27.45 27.02 26.94 27.10 27.23 27.12 27.28 27.35 27.28 27.39 27.46 27.36 27.54 27.66 27.53 27.76 27.49 27.31 27.75 27.22 27.12 27.30 26.99 26.94 27.12 26.93 26.82 27.02 26.85 26.77 27.03 27.19 27.04 27.29 27.08 26.95 27.28 27.01 26.94 27.25 27.39 27.27 27.45 27.42 27.38 27.53 27.61 27.54 27.67 27.47 27.40 27.57 27.25 27.04 27.41 26.95 26.86 27.04 26.83 26.77 26.91 27.03 26.90 27.20 27.26 27.18 27.36 27.45 27.36 27.50 27.37 27.21 27.50 27.19 27.13 27.24 27.17 27.04 27.25 26.82 26.71 27.00 26.93 26.85 26.98 27.02 26.94 27.06 26.97 26.91 27.06 27.29 27.08 27.44 27.27 27.06 27.44 27.03 27.00 27.05 26.90 26.84 27.00 27.15 27.02 27.22 27.01 26.87 27.18 26.92 26.84 27.00 26.95 26.91 27.00 26.99 26.88 27.20 27.39 27.21 27.55 27.60 27.54 27.68 27.55 27.23 27.68 27.14 27.10 27.21 27.11 27.05 27.14 27.17 27.06 27.27 27.27 27.22 27.31 27.13 27.05 27.21 27.10 27.05 27.16 27.05 26.97 27.15 27.03 26.98 27.08 27.05 26.96 27.13 27.29 27.13 27.50 27.51 27.47 27.56 27.40 27.34 27.46 27.37 27.32 27.40 27.31 27.22 27.37 27.17 27.13 27.22 26.94 26.85 27.13 26.87 26.77 27.09 27.16 27.10 27.20 27.23 27.22 27.19 27.03 27.28 27.54 27.45 27.27 27.27 27.14 27.19 27.18 27.22 27.25 27.20 27.18 27.18 27.15 27.04 27.03 27.02 26.94 27.01 26.99 26.89 27.01 27.19 27.19 27.17 27.16 27.03 26.95 27.14 27.45 27.38 27.15 27.19 27.09 27.17 27.15 27.18 27.22 27.14 27.16 27.14 27.10 26.98 27.01 26.96 26.90 26.96 26.91 26.85 26.95 27.11 27.13 27.27 27.27 27.28 27.13 27.44 27.59 27.51 27.39 27.33 27.19 27.22 27.21 27.28 27.27 27.24 27.20 27.22 27.19 27.12 27.07 27.07 26.98 27.04 27.05 26.95 27.10 27.23 27.24 Relative Humidity % Ave Min Max 67.50 59.10 75.60 78.44 69.80 86.40 77.15 64.00 86.40 88.22 85.30 88.90 81.00 74.30 88.00 73.34 64.30 79.70 59.43 47.40 68.40 66.62 53.00 79.80 72.57 68.00 77.60 74.12 63.40 81.50 77.69 75.00 80.40 75.96 73.80 77.90 70.30 48.90 77.00 69.17 60.50 75.00 73.76 68.70 81.60 66.86 55.40 73.10 66.95 54.50 76.50 72.18 67.70 78.40 79.80 74.10 83.80 77.81 72.50 82.60 68.84 62.00 73.90 65.46 57.60 69.00 65.36 52.10 73.10 67.47 61.70 72.90 69.76 54.10 75.70 69.20 56.00 77.50 74.27 65.60 81.00 78.43 64.60 86.80 70.78 64.70 79.00 76.80 72.00 81.80 80.89 75.50 85.80 64.04 58.20 74.30 63.75 58.00 67.50 60.64 46.30 67.50 64.53 55.10 72.70 67.23 57.10 75.60 65.54 55.10 72.30 63.68 45.90 73.80 61.10 38.50 79.50 70.78 42.80 85.90 70.13 59.90 84.20 80.36 74.30 84.70 62.47 32.60 85.10 69.20 59.40 83.50 75.03 65.90 81.70 80.65 74.80 84.20 77.07 68.40 83.30 70.90 58.80 79.00 68.23 53.90 77.50 69.91 62.90 77.70 67.79 46.80 77.90 81.29 73.40 85.20 81.98 75.80 85.00 71.92 53.10 82.60 68.96 53.60 82.80 82.38 71.30 87.30 80.10 70.40 87.10 78.10 65.90 84.00 69.42 54.70 82.00 73.90 62.30 80.60 59.47 41.70 73.70 71.10 53.60 86.70 79.73 72.10 87.00 72.74 64.00 79.70 68.05 62.70 76.30 62.51 28.90 85.40 54.11 38.50 72.10 58.84 46.10 72.20 63.25 55.70 76.20 80.72 68.70 89.20 71.99 54.00 82.30 75.49 56.30 85.00 45.58 19.70 73.50 41.09 24.50 63.40 43.75 24.30 68.80 39.90 9.30 68.50 50.98 42.00 77.10 72.57 55.40 88.00 46.63 52.38 39.33 44.59 56.33 52.55 53.78 54.68 49.33 84.55 86.55 72.82 82.67 67.58 67.25 57.80 50.93 61.33 77.13 78.25 69.40 73.09 57.82 59.55 67.83 62.91 50.86 64.18 36.50 24.20 21.90 22.30 33.70 30.70 33.60 25.30 38.50 62.00 81.40 51.10 76.70 44.80 44.80 27.70 23.70 43.40 56.80 57.70 39.20 51.80 33.10 39.90 50.40 46.60 27.80 48.20 61.30 78.90 63.20 74.80 78.40 81.30 77.80 85.50 62.80 88.80 89.80 88.90 89.40 89.20 88.70 88.40 80.40 78.30 90.70 88.90 91.00 86.40 80.00 80.20 81.10 82.00 79.30 78.10 Wind Speed mph Ave Min Max 11.04 5.70 16.30 14.58 10.00 19.70 10.20 3.00 14.90 10.38 3.80 18.90 20.67 15.20 24.40 16.07 12.00 20.80 10.06 4.70 14.20 4.87 2.80 6.90 5.17 1.00 10.60 6.43 2.00 11.70 6.13 1.80 10.30 7.20 1.30 12.60 6.92 1.40 11.60 10.77 2.70 16.80 15.51 3.70 23.90 9.70 2.80 13.90 8.55 2.60 13.80 12.39 4.90 20.20 6.42 3.00 11.60 12.12 5.70 20.20 15.21 12.10 18.90 11.48 6.50 17.00 8.46 2.50 15.40 15.35 3.20 26.60 9.50 2.60 19.00 9.78 5.00 16.80 6.75 3.90 12.80 7.30 4.50 13.80 11.97 2.00 16.40 13.28 2.00 25.30 13.00 4.40 23.00 16.40 12.40 20.30 11.65 6.10 13.80 10.48 6.70 17.70 9.97 5.90 16.40 13.33 7.40 18.50 9.83 7.20 14.80 7.48 2.50 12.70 10.97 4.60 17.40 10.85 5.20 17.10 8.55 5.80 11.20 11.13 4.80 16.80 8.53 4.00 13.80 11.55 4.90 20.70 17.82 5.60 27.30 22.75 12.00 29.50 25.07 15.90 30.80 14.89 12.00 18.80 17.00 7.80 23.80 9.95 3.90 19.90 8.86 5.20 16.40 17.88 6.20 30.00 18.30 2.70 28.90 6.80 2.40 10.20 7.42 2.80 12.90 6.20 1.00 11.60 12.29 8.30 17.70 12.63 9.20 15.80 12.31 8.50 15.60 11.50 4.00 22.30 11.05 4.10 19.80 8.55 3.50 13.20 12.25 9.40 15.00 15.33 10.90 21.50 14.77 5.00 25.00 13.94 9.60 19.50 10.08 5.30 15.50 11.51 4.60 21.20 16.26 3.10 27.70 12.13 3.80 18.00 9.11 6.80 12.10 8.33 5.50 10.30 11.09 7.10 18.50 5.46 2.80 11.30 11.57 4.60 14.80 10.18 4.70 16.70 14.70 4.10 23.30 7.36 2.40 15.00 9.04 9.98 8.95 13.62 7.63 7.12 6.66 10.96 11.08 14.78 9.38 10.24 6.13 4.68 7.61 6.80 7.50 9.87 9.82 6.13 7.90 6.94 8.90 14.92 15.87 6.52 10.64 10.48 4.10 5.20 2.30 3.10 2.60 3.00 3.30 6.30 7.50 9.50 2.80 3.90 2.00 2.90 3.70 4.70 3.00 3.60 5.00 3.00 2.10 3.90 3.80 6.20 7.40 2.90 3.30 4.40 16.00 15.60 20.80 19.60 12.50 11.90 11.20 13.30 15.40 18.90 13.40 14.40 11.30 7.00 12.70 8.40 12.30 16.90 19.10 10.80 13.60 11.60 12.10 24.00 23.90 13.10 18.80 19.80 Wind Direction compass deg Ave Min Max 243.88 205.00 282.00 273.29 211.00 309.00 163.04 39.00 235.00 222.25 5.00 348.00 291.13 285.00 296.00 281.92 261.00 296.00 282.67 256.00 309.00 181.08 9.00 309.00 87.63 42.00 183.00 143.92 1.00 330.00 124.63 51.00 186.00 292.13 179.00 356.00 286.63 147.00 349.00 272.67 222.00 332.00 291.67 41.00 358.00 237.42 29.00 347.00 135.58 65.00 235.00 186.00 128.00 271.00 207.13 30.00 359.00 154.17 12.00 353.00 53.17 32.00 86.00 142.71 79.00 239.00 234.58 1.00 332.00 168.29 134.00 187.00 167.71 82.00 215.00 213.83 154.00 287.00 183.54 35.00 329.00 262.67 186.00 317.00 305.71 91.00 343.00 175.63 32.00 219.00 270.79 198.00 346.00 314.79 5.00 357.00 228.17 2.00 358.00 237.04 185.00 286.00 220.33 206.00 249.00 222.71 207.00 239.00 218.29 196.00 233.00 222.17 152.00 275.00 246.71 15.00 347.00 256.96 224.00 347.00 163.92 36.00 262.00 175.13 148.00 207.00 240.58 120.00 329.00 129.88 69.00 196.00 155.63 2.00 338.00 339.92 325.00 356.00 323.75 313.00 339.00 305.04 284.00 344.00 325.00 297.00 340.00 225.54 171.00 335.00 198.92 1.00 339.00 73.42 38.00 133.00 48.58 10.00 303.00 279.08 42.00 328.00 264.42 232.00 294.00 187.58 110.00 239.00 80.21 55.00 136.00 87.08 5.00 350.00 321.08 0.00 359.00 231.42 182.00 330.00 218.42 0.00 346.00 148.25 46.00 353.00 103.71 78.00 132.00 131.54 112.00 153.00 141.42 85.00 183.00 238.17 179.00 305.00 214.33 172.00 264.00 166.38 20.00 342.00 133.29 20.00 162.00 265.42 159.00 327.00 229.38 10.00 351.00 144.79 53.00 279.00 296.54 234.00 339.00 225.92 13.00 359.00 249.38 15.00 360.00 213.25 110.00 285.00 233.83 6.00 359.00 240.22 3.00 350.00 99.71 256.54 203.58 126.71 232.58 177.00 218.25 240.17 53.33 85.25 105.79 265.88 95.08 188.58 199.83 248.75 199.71 127.17 102.42 150.46 211.17 244.21 263.33 170.13 190.92 221.26 266.92 198.08 23.00 167.00 46.00 3.00 12.00 2.00 176.00 23.00 12.00 59.00 2.00 1.00 7.00 2.00 28.00 210.00 78.00 42.00 11.00 14.00 121.00 1.00 207.00 129.00 143.00 28.00 19.00 91.00 214.00 359.00 350.00 359.00 350.00 359.00 250.00 343.00 104.00 116.00 324.00 357.00 360.00 330.00 236.00 318.00 293.00 208.00 216.00 359.00 232.00 348.00 309.00 214.00 261.00 325.00 334.00 246.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 2190 5.65 3.20 8.80 376.00 1241 6.27 3.50 9.70 222.00 2702 7.72 2.80 35.20 459.00 409 95.00 6.77 4.40 12.00 1245 5.13 4.80 5.70 224.00 2014 5.05 3.60 5.70 352.00 3124 5.29 3.30 7.60 506.00 2752 12.86 2.80 34.70 501.00 2380 11.39 3.90 38.10 481.00 2671 7.75 3.10 22.30 451.00 2189 8.55 4.60 25.00 370.00 2398 429.00 11.38 3.30 60.40 3074 6.26 2.30 14.80 514.00 3036 5.51 2.60 17.10 526.00 2684 6.83 4.80 18.20 482.00 3462 544.00 7.68 3.10 27.20 3597 8.17 3.60 20.80 548.00 3292 6.16 4.00 14.90 515.00 2043 15.28 3.50 43.30 327.00 1941 5.55 3.40 10.20 339.00 2710 4.59 3.60 6.50 472.00 2951 5.09 3.60 8.40 560.00 4004 8.87 3.80 33.80 595.00 3313 5.63 3.60 18.70 484.00 3823 10.90 4.60 41.90 593.00 3379 11.50 3.20 53.30 652.00 3283 18.53 3.90 42.10 515.00 2741 8.12 4.50 18.10 470.00 3025 7.75 5.20 21.10 539.00 3843 6.29 2.60 21.90 633.00 3406 6.84 4.20 19.50 614.00 3466 6.91 5.40 9.00 532.00 3697 6.52 4.30 9.60 570.00 4709 5.72 3.20 13.80 670.00 4732 672.00 4.98 2.40 18.60 4713 3.71 2.80 5.10 673.00 4747 4.78 2.70 8.50 687.00 4675 11.30 3.70 54.80 672.00 4257 659.00 8.41 3.70 21.80 4084 6.93 3.60 15.10 691.00 4693 7.06 3.20 26.70 639.00 4274 7.25 4.10 26.30 710.00 4982 11.32 3.00 27.30 683.00 4312 8.60 5.70 19.70 649.00 3735 10.19 5.60 33.00 620.00 653 7.70 5.40 10.40 171.00 3524 5.13 4.60 5.70 527.00 5023 5.90 5.00 8.70 731.00 5120 5.28 3.80 6.20 698.00 5500 750.00 7.19 4.00 16.80 5334 6.49 3.50 11.90 752.00 2284 4.68 3.30 7.70 295.00 3248 4.30 3.20 20.00 487.00 5460 6.09 1.40 24.30 770.00 6011 12.20 2.50 44.60 785.00 4785 7.68 3.30 14.30 702.00 5709 5.17 3.50 8.90 792.00 4144 638.00 4.46 3.30 7.00 5674 6.19 4.00 9.40 755.00 5895 6.04 2.30 25.30 798.00 6102 6.78 2.90 25.20 796.00 5762 807.00 10.78 3.90 44.00 1900 5.83 4.20 10.90 278.00 5378 5.66 4.70 7.50 778.00 5112 6.98 4.70 14.20 744.00 4078 6.94 4.70 14.20 565.00 5365 6.30 3.70 11.50 800.00 5588 8.32 5.50 13.90 769.00 3111 9.46 5.50 50.30 598.00 2959 8.24 4.70 20.20 720.00 4337 10.63 4.00 20.30 774.00 3048 8.41 4.00 15.70 550.00 6182 9.08 4.40 19.00 816.00 5103 20.53 3.70 63.60 769.00 5865 8.83 2.50 15.70 791.00 5868 8.98 3.50 19.20 830.00 4297 11.61 3.50 43.60 700.00 2651 17.12 6.30 38.70 447.00 7.31 10.43 15.63 9.00 15.33 20.33 18.43 9.46 9.26 5.80 7.30 9.75 10.82 21.85 11.66 14.96 16.57 9.48 11.80 14.89 10.84 11.38 10.38 6.85 8.36 18.05 10.23 12.24 4.70 3.70 4.90 3.80 4.50 3.50 3.40 3.90 4.00 4.70 5.20 5.40 4.20 3.40 2.30 2.40 2.90 3.60 7.50 5.70 3.30 3.00 3.20 2.30 5.20 5.60 3.10 3.20 11.70 26.00 46.10 17.90 56.70 49.50 56.50 18.50 21.20 7.30 12.20 15.20 40.90 58.70 35.50 47.80 54.70 17.10 38.00 43.40 41.70 25.20 24.60 9.10 18.50 55.60 30.40 37.80 1005 6316 7196 7023 1990 7173 7052 7051 5683 1746 1272 5393 1887 5177 7009 7053 7235 6412 4568 5100 6500 3935 6880 6855 5275 5709 7268 5205 394.00 877.00 907.00 887.00 313.00 877.00 973.00 871.00 753.00 295.00 240.00 675.00 238.00 654.00 881.00 836.00 899.00 803.00 764.00 838.00 786.00 554.00 899.00 887.00 800.00 886.00 926.00 872.00 Rain in Method Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Weighing Bucket Tipping Bucket Tipping Bucket

Daily Sum 0.00 0.01 0.00 0.28 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.35 0.30 0.00 0.01 0.00 0.00 0.00 0.02 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.01 0.00 0.10 0.00 0.00 0.00 0.07 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.00 0.44 0.34 0.01 0.27 0.01 0.01 0.01 0.00 0.00 0.05 0.04 0.01 0.08 0.00 0.00 0.01 0.00 0.00 0.66

Revision 1
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Golder Assoicates

SHSH-1001/063-2212A

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 71.76 56.70 84.80 66.01 56.20 76.70 61.04 53.30 69.80 65.96 49.50 81.50 67.30 55.00 79.00 65.37 53.50 78.30 66.16 54.40 77.20 67.88 58.80 77.30 62.75 56.30 69.40 65.66 55.70 75.90 65.37 54.60 78.10 66.60 54.00 76.50 64.79 58.50 74.00 65.61 56.90 78.20 64.33 51.90 74.90 61.78 52.80 70.50 63.94 49.70 79.80 67.66 58.50 76.20 63.47 60.10 67.70 62.48 56.70 69.40 58.55 49.30 68.30 59.78 49.30 70.90 61.61 45.50 73.50 65.12 49.50 78.40 70.54 54.80 85.60 65.45 57.30 74.20 65.45 51.80 75.70 67.23 49.90 81.90 74.13 55.70 92.30 69.28 55.60 79.60 72.02 57.80 84.90 72.71 59.10 86.20 68.26 58.70 76.70 61.79 51.20 73.30 55.46 50.50 64.50 60.27 50.30 71.20 56.85 49.20 64.90 62.30 45.60 79.30 67.64 53.90 81.40 64.47 54.30 79.00 56.94 45.20 68.50 61.43 50.10 73.50 59.82 53.40 72.10 66.18 61.90 74.90 61.05 57.00 66.30 60.23 50.30 73.70 66.55 51.20 81.70 73.59 56.80 91.80 77.75 58.70 95.70 78.15 63.00 93.20 68.69 59.90 77.80 62.07 54.80 69.80 57.22 50.90 65.50 55.78 48.10 68.00 63.87 45.40 80.80 61.42 56.20 67.70 61.06 54.50 70.30 61.13 49.20 75.10 69.08 52.20 88.90 73.36 60.20 85.80 67.85 59.20 78.90 66.82 49.50 83.30 72.24 56.30 87.80 71.10 56.30 86.60 62.24 56.00 69.60 61.51 50.80 74.20 62.66 51.00 76.00 66.88 51.90 82.00 67.68 54.80 83.50 70.19 57.90 83.90 62.35 52.00 75.00 69.68 56.80 85.70 74.21 56.30 92.10 74.46 58.30 90.40 68.86 60.40 76.90 58.23 50.80 66.50 62.48 43.80 81.00 69.77 52.20 87.60 54.18 48.90 63.40 56.94 52.50 65.00 61.31 47.80 74.00 71.88 60.80 88.70 72.06 56.70 87.90 73.18 57.00 89.70 72.32 56.60 88.60 71.77 53.00 90.00 69.76 50.40 88.10 61.99 48.90 79.20 50.02 46.00 53.40 54.25 40.00 68.80 63.55 47.30 80.00 64.28 50.10 81.70 61.31 44.90 79.20 63.06 45.80 82.60 52.19 45.20 57.70 47.44 36.60 60.50 52.11 39.10 67.30 56.08 46.80 70.60 40.31 38.00 45.70 38.96 37.40 40.20 39.51 37.90 41.10 40.93 37.30 45.10 36.45 32.30 40.60 38.41 32.30 47.60 40.95 33.70 48.00 33.99 27.40 41.10 24.03 22.10 29.00 Barometric Pressure in Hg Ave Min Max 27.16 27.05 27.22 27.04 27.01 27.07 27.18 27.09 27.26 27.24 27.16 27.29 27.15 27.12 27.22 27.20 27.12 27.24 27.20 27.13 27.28 27.33 27.28 27.38 27.35 27.33 27.39 27.36 27.31 27.40 27.29 27.20 27.36 27.18 27.08 27.25 27.11 27.04 27.17 27.06 26.91 27.17 27.14 27.06 27.25 27.34 27.26 27.41 27.37 27.27 27.44 27.34 27.30 27.37 27.20 27.00 27.34 27.07 27.01 27.22 27.32 27.23 27.37 27.41 27.38 27.44 27.46 27.44 27.48 27.41 27.33 27.47 27.14 27.02 27.31 27.22 27.09 27.31 27.29 27.24 27.31 27.26 27.21 27.29 27.13 27.07 27.22 27.22 27.15 27.27 27.30 27.28 27.32 27.26 27.23 27.30 27.30 27.27 27.32 27.28 27.22 27.33 27.24 27.22 27.28 27.25 27.17 27.30 27.14 27.03 27.29 27.21 27.09 27.28 27.03 26.97 27.10 27.13 27.06 27.29 27.32 27.29 27.36 27.40 27.34 27.45 27.23 27.07 27.39 27.02 26.98 27.07 27.17 27.09 27.22 27.24 27.22 27.26 27.28 27.25 27.30 27.26 27.21 27.29 27.17 27.11 27.22 27.12 27.07 27.16 27.10 27.04 27.16 27.08 27.02 27.14 27.12 27.10 27.19 27.24 27.18 27.28 27.13 27.00 27.27 27.02 26.99 27.10 27.22 27.11 27.34 27.36 27.30 27.40 27.19 27.11 27.30 27.07 26.92 27.13 27.09 26.86 27.29 27.30 27.25 27.35 27.31 27.29 27.34 27.31 27.27 27.44 27.48 27.46 27.51 27.45 27.41 27.48 27.40 27.32 27.47 27.25 27.18 27.33 27.21 27.18 27.24 27.27 27.23 27.32 27.33 27.28 27.37 27.22 27.16 27.28 27.21 27.18 27.25 27.15 27.09 27.20 27.09 27.03 27.12 27.17 27.03 27.27 27.29 27.25 27.33 27.28 27.23 27.36 27.42 27.33 27.48 27.43 27.36 27.47 27.23 27.08 27.34 27.08 27.05 27.15 27.28 27.16 27.40 27.42 27.39 27.45 27.35 27.29 27.39 27.29 27.24 27.31 27.17 27.04 27.28 27.02 26.95 27.19 27.32 27.20 27.43 27.46 27.44 27.49 27.47 27.42 27.51 27.35 27.29 27.42 27.27 27.21 27.31 27.03 26.87 27.20 27.12 26.91 27.31 27.37 27.32 27.43 27.14 26.95 27.32 26.82 26.75 26.93 26.94 26.87 27.04 27.11 27.04 27.18 27.19 27.16 27.26 27.30 27.27 27.33 27.22 27.17 27.28 27.09 26.91 27.22 27.06 26.88 27.26 27.29 27.22 27.34 27.34 27.19 27.46 Relative Humidity % Ave Min Max 59.50 39.10 82.30 77.47 64.60 86.50 63.89 38.90 86.70 49.60 29.00 68.90 64.61 51.10 82.30 70.83 51.90 87.20 72.53 57.50 85.60 69.89 42.70 90.50 78.73 66.20 89.10 66.08 40.40 89.30 65.43 46.40 81.10 70.27 56.30 86.20 77.29 60.10 88.40 76.78 56.30 90.10 58.70 30.80 86.90 64.88 49.10 78.50 70.36 50.20 87.50 75.49 57.40 89.00 84.50 75.00 89.70 73.98 50.10 90.20 63.25 40.90 85.40 59.28 41.10 81.60 58.09 36.40 81.70 58.60 41.00 79.70 58.71 50.10 70.80 62.50 41.50 83.40 52.87 33.00 76.90 54.85 29.10 80.70 50.11 17.80 75.60 57.48 38.20 79.30 54.77 32.00 76.50 55.58 29.40 81.80 56.71 33.60 75.90 54.15 31.90 69.80 77.58 53.30 89.10 66.00 35.90 86.80 67.26 50.20 84.50 55.75 27.20 82.20 58.00 39.40 80.30 60.22 44.00 82.00 68.54 49.50 84.00 67.04 47.40 82.60 81.80 64.60 90.40 84.70 67.40 91.10 79.57 60.70 89.80 73.08 44.90 88.50 59.88 29.70 84.50 50.37 15.30 79.00 42.66 12.00 72.30 46.10 23.30 72.10 74.64 57.30 87.60 76.82 51.80 90.10 66.65 43.00 88.30 63.59 35.00 83.00 50.93 23.40 77.50 67.73 51.30 84.00 64.97 43.30 77.40 59.18 30.60 81.80 54.10 27.30 77.10 62.93 43.20 81.00 72.83 49.70 87.50 61.76 24.00 90.90 49.17 19.20 77.20 54.53 23.70 82.80 69.65 49.70 88.50 56.20 28.30 82.10 55.73 29.20 83.30 53.81 32.70 78.60 58.18 37.40 77.60 59.02 33.80 85.10 76.95 53.80 90.80 62.17 32.60 88.10 50.06 18.20 84.50 49.15 18.10 78.60 64.77 46.40 86.90 70.93 45.00 87.60 45.48 9.70 82.20 41.53 13.30 71.80 76.77 48.20 86.60 80.59 58.50 89.80 69.24 36.60 89.90 58.92 23.90 80.40 62.40 33.80 87.80 57.87 31.90 83.60 44.17 22.50 69.30 40.83 16.20 70.70 40.79 17.30 70.40 51.53 30.20 77.30 72.14 62.90 85.70 52.52 23.70 81.70 44.24 27.90 61.00 49.74 24.80 72.70 52.75 24.70 80.40 44.85 17.90 69.50 49.47 28.70 77.80 56.18 34.70 76.60 52.20 29.60 76.00 53.98 33.70 87.00 84.38 80.50 88.00 84.07 79.90 88.10 82.49 74.60 87.50 79.23 66.30 87.40 86.47 82.20 88.80 78.71 56.50 89.10 68.77 56.80 80.10 51.94 33.40 70.60 63.78 49.90 79.30 Wind Speed mph Ave Min Max 9.58 3.00 16.50 12.41 6.10 18.80 12.77 5.60 20.80 8.04 2.40 11.80 5.10 13.80 9.36 12.36 6.20 19.20 2.20 12.50 6.38 7.95 2.40 12.30 3.00 14.80 9.95 6.15 3.00 9.30 7.63 2.00 16.70 9.99 4.00 18.30 9.57 5.40 20.30 10.71 5.00 18.50 11.58 4.90 18.30 7.28 4.30 9.50 8.08 2.80 12.90 7.50 5.10 10.70 13.40 5.70 21.10 12.99 3.70 23.00 9.58 5.30 14.10 6.64 3.10 11.10 4.39 2.00 5.80 6.53 2.50 9.10 11.98 7.40 18.80 9.22 4.80 14.60 7.94 2.80 10.70 5.65 3.80 8.00 11.21 7.00 16.10 7.24 3.10 10.20 5.89 2.80 10.40 9.51 5.90 13.50 9.71 5.80 14.70 7.83 5.00 14.60 8.33 3.10 18.70 6.90 2.20 9.00 11.98 6.50 19.80 7.43 3.80 10.60 10.06 4.00 18.50 10.56 4.30 15.80 5.87 2.50 10.90 5.42 3.80 8.40 11.12 6.00 17.50 6.20 2.70 11.00 8.97 5.30 12.30 6.47 3.90 12.10 5.20 2.30 8.00 11.25 7.20 16.90 10.51 7.40 14.70 6.40 3.40 13.00 11.41 4.80 20.70 11.11 4.10 16.70 16.89 7.20 25.20 15.37 8.00 19.90 9.98 6.50 16.00 11.52 4.10 20.40 14.29 7.50 19.90 6.85 4.00 9.50 10.44 6.30 18.30 11.34 3.10 16.20 12.56 4.40 30.00 6.18 2.80 11.00 8.65 3.40 15.70 12.46 5.40 19.40 7.35 3.70 10.20 5.65 1.80 9.00 8.98 5.10 11.20 11.79 4.30 16.00 8.96 4.90 14.20 6.06 3.30 10.40 8.48 2.00 13.00 14.44 9.10 18.80 10.15 3.80 14.80 13.75 7.30 19.70 11.52 7.40 17.60 9.26 2.60 17.80 12.20 6.60 16.80 9.74 2.70 18.70 13.53 8.60 17.70 8.89 5.80 16.10 13.95 4.40 26.30 11.95 4.40 21.90 4.71 1.60 8.20 5.87 2.20 8.70 7.76 4.80 11.10 6.15 2.80 9.90 10.85 3.60 16.60 13.64 8.80 20.10 16.80 8.70 23.10 8.58 2.50 13.50 5.23 1.00 8.20 6.76 3.60 9.80 6.50 1.90 9.20 10.31 5.70 17.70 20.10 5.00 33.00 9.33 4.30 14.30 18.73 11.30 26.40 14.64 7.40 19.90 20.48 12.30 26.00 15.79 7.50 20.70 6.35 3.30 8.60 4.70 2.20 7.80 10.36 6.20 14.30 10.07 5.60 15.20 16.88 9.60 24.00 11.11 3.40 15.30 16.29 6.70 20.30 Wind Direction compass deg Ave Min Max 177.88 71.00 265.00 356.00 0.00 120.79 286.63 261.00 349.00 262.33 109.00 357.00 138.96 48.00 336.00 130.58 18.00 261.00 149.21 50.00 359.00 140.33 12.00 350.00 84.54 45.00 128.00 224.00 2.00 350.00 174.21 36.00 252.00 102.58 57.00 229.00 67.04 1.00 127.00 157.00 110.00 356.00 268.04 233.00 302.00 236.13 7.00 355.00 138.92 56.00 227.00 144.38 16.00 351.00 133.58 95.00 164.00 251.17 62.00 303.00 302.75 257.00 356.00 160.50 1.00 353.00 155.13 20.00 359.00 159.83 44.00 232.00 190.33 164.00 235.00 300.00 3.00 359.00 250.29 7.00 345.00 199.75 98.00 341.00 197.63 14.00 352.00 184.25 4.00 358.00 196.42 5.00 357.00 247.88 3.00 358.00 253.75 0.00 355.00 211.88 0.00 358.00 252.92 2.00 346.00 280.00 147.00 315.00 280.29 215.00 333.00 248.54 65.00 314.00 277.00 208.00 334.00 171.33 3.00 357.00 119.54 29.00 294.00 78.17 7.00 174.00 109.75 69.00 151.00 353.00 110.83 8.00 305.13 257.00 335.00 229.96 32.00 345.00 227.17 91.00 328.00 232.38 213.00 254.00 212.88 173.00 239.00 168.17 8.00 356.00 109.71 7.00 352.00 252.79 45.00 348.00 262.38 236.00 280.00 279.29 246.00 301.00 244.50 207.00 352.00 9.00 277.38 355.00 323.33 299.00 356.00 186.71 7.00 338.00 177.38 149.00 210.00 113.42 7.00 300.00 297.71 148.00 341.00 219.21 162.00 309.00 191.42 144.00 220.00 241.00 1.00 357.00 88.46 0.00 359.00 120.46 41.00 338.00 140.29 118.00 171.00 140.92 99.00 160.00 165.54 79.00 285.00 178.00 13.00 353.00 147.71 57.00 205.00 177.88 170.00 184.00 175.63 138.00 227.00 160.42 129.00 200.00 148.04 10.00 354.00 231.83 3.00 337.00 208.67 182.00 244.00 239.33 138.00 338.00 255.88 8.00 341.00 87.42 12.00 353.00 133.83 74.00 160.00 165.17 104.00 204.00 105.54 31.00 206.00 174.83 53.00 250.00 177.67 129.00 232.00 204.04 156.00 247.00 190.21 159.00 229.00 260.67 169.00 349.00 318.54 298.00 342.00 316.88 243.00 348.00 214.88 6.00 355.00 180.04 37.00 254.00 213.63 151.00 329.00 268.13 228.00 345.00 301.63 5.00 351.00 228.13 37.00 347.00 137.13 122.00 151.00 192.58 107.00 303.00 301.92 283.00 317.00 319.67 306.00 332.00 191.71 4.00 347.00 132.25 8.00 354.00 88.33 11.00 357.00 265.96 218.00 332.00 297.21 239.00 332.00 293.58 233.00 317.00 293.96 232.00 345.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 7185 10.87 3.60 43.40 907.00 3211 9.46 5.90 19.20 529.00 5466 8.97 6.30 13.20 769.00 7170 923.00 11.41 5.60 33.10 6749 8.56 3.20 27.10 843.00 6237 12.17 7.20 46.50 904.00 4520 13.60 4.10 28.20 621.00 5613 8.97 4.90 18.20 897.00 4472 8.55 5.70 14.40 588.00 6427 16.88 5.70 39.20 919.00 4587 13.48 4.00 55.40 820.00 6114 803.00 9.85 4.90 21.00 5505 12.96 7.30 37.80 835.00 4812 13.86 8.20 47.90 870.00 6776 8.26 5.00 12.10 840.00 5820 772.00 11.67 4.60 20.70 6405 11.65 7.50 19.70 874.00 6289 12.21 4.90 25.60 898.00 2090 10.14 8.00 17.50 378.00 4817 11.56 7.80 42.10 606.00 6632 9.92 4.80 14.60 875.00 6753 13.89 3.10 44.80 898.00 6865 18.89 3.20 47.20 882.00 6622 11.33 3.00 27.10 868.00 5507 7.52 5.40 9.00 692.00 4573 9.97 5.10 17.10 832.00 6878 10.16 3.60 17.30 876.00 6350 15.52 3.00 52.50 869.00 6527 6.86 4.10 11.90 863.00 6047 10.74 2.90 26.30 825.00 6643 15.37 4.20 50.80 858.00 5729 8.78 3.40 15.40 850.00 5896 10.08 2.90 15.40 688.00 5601 12.21 3.60 35.20 714.00 4212 693.00 10.24 7.20 13.70 5539 12.12 4.30 24.90 813.00 3932 7.70 3.30 12.40 636.00 6715 11.97 4.00 27.10 855.00 5808 797.00 10.06 3.30 35.10 5634 9.33 3.40 34.00 809.00 3913 17.76 3.50 61.80 532.00 4404 16.14 5.40 48.90 603.00 2491 9.35 4.70 12.60 626.00 2774 14.50 6.30 33.30 440.00 3064 9.68 4.90 19.00 532.00 4047 18.63 4.50 55.50 759.00 6612 18.75 3.80 41.80 825.00 6507 6.45 2.40 13.40 816.00 6484 830.00 7.05 2.60 13.00 5961 787.00 19.75 3.40 48.00 3582 536.00 11.83 5.80 33.10 4153 5.00 18.20 9.77 649.00 5023 4.60 7.23 9.60 663.00 4497 8.05 5.20 12.50 634.00 5392 8.10 2.50 16.90 724.00 4288 9.16 6.40 14.80 528.00 4569 8.65 5.40 12.90 727.00 6521 791.00 17.96 3.80 66.60 5563 9.86 6.10 23.60 761.00 4891 10.42 4.20 48.40 730.00 2996 8.55 5.00 12.80 551.00 6071 760.00 14.60 3.00 36.50 5985 16.59 4.10 52.90 771.00 5075 9.96 4.90 18.80 758.00 2698 10.50 3.40 18.10 390.00 5657 19.45 4.40 39.30 760.00 5706 12.89 7.10 24.70 750.00 5614 11.50 7.20 17.90 749.00 4918 15.54 6.90 37.00 711.00 5136 20.51 3.30 58.50 715.00 3696 10.36 4.00 23.10 632.00 4996 8.17 5.90 11.80 736.00 5347 9.67 4.40 22.30 727.00 5084 9.24 6.60 14.70 724.00 4215 10.69 5.50 20.80 621.00 2559 11.97 4.40 41.00 521.00 5476 6.60 3.20 11.90 748.00 4709 13.44 3.90 51.90 725.00 1138 7.78 6.20 9.80 205.00 2604 8.53 5.10 23.40 545.00 3777 678.00 9.43 5.10 17.40 4617 12.61 7.20 34.30 700.00 4012 15.03 4.00 31.40 543.00 4255 18.85 2.40 60.20 652.00 4644 669.00 9.16 3.10 18.60 4748 15.58 3.50 52.90 676.00 4705 8.39 2.30 23.00 675.00 3488 8.58 5.40 14.90 677.00 1496 7.98 6.90 9.60 247.00 4594 9.68 4.20 20.60 663.00 4491 17.61 3.00 48.30 645.00 4497 13.27 3.00 26.50 648.00 4449 18.66 3.00 55.80 644.00 4278 7.60 2.40 22.10 633.00 3917 8.36 4.20 12.90 630.00 4329 13.71 5.20 43.70 619.00 4131 8.45 7.80 10.00 621.00 2600 10.23 6.30 28.60 434.00 1050 7.65 7.00 8.50 245.00 720 7.53 6.70 8.20 130.00 721 9.12 5.90 16.00 140.00 1104 11.57 5.10 37.90 188.00 465 6.50 5.30 8.10 81.00 2592 461.00 6.49 4.70 10.40 2008 7.93 5.40 11.00 377.00 3595 9.02 3.20 14.50 567.00 2196 7.88 3.00 14.40 443.00 Rain in Method Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket Tipping Bucket

Day 6/25/2009 6/26/2009 6/27/2009 6/28/2009 6/29/2009 6/30/2009 7/1/2009 7/2/2009 7/3/2009 7/4/2009 7/5/2009 7/6/2009 7/7/2009 7/8/2009 7/9/2009 7/10/2009 7/11/2009 7/12/2009 7/13/2009 7/14/2009 7/15/2009 7/16/2009 7/17/2009 7/18/2009 7/19/2009 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/26/2009 7/27/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/1/2009 8/2/2009 8/3/2009 8/4/2009 8/5/2009 8/6/2009 8/7/2009 8/8/2009 8/9/2009 8/10/2009 8/11/2009 8/12/2009 8/13/2009 8/14/2009 8/15/2009 8/16/2009 8/17/2009 8/18/2009 8/19/2009 8/20/2009 8/21/2009 8/22/2009 8/23/2009 8/24/2009 8/25/2009 8/26/2009 8/27/2009 8/28/2009 8/29/2009 8/30/2009 8/31/2009 9/1/2009 9/2/2009 9/3/2009 9/4/2009 9/5/2009 9/6/2009 9/7/2009 9/8/2009 9/9/2009 9/10/2009 9/11/2009 9/12/2009 9/13/2009 9/14/2009 9/15/2009 9/16/2009 9/17/2009 9/18/2009 9/19/2009 9/20/2009 9/21/2009 9/22/2009 9/23/2009 9/24/2009 9/25/2009 9/26/2009 9/27/2009 9/28/2009 9/29/2009 9/30/2009 10/1/2009 10/2/2009 10/3/2009 10/4/2009 10/5/2009 10/6/2009 10/7/2009 10/8/2009 10/9/2009

Daily Sum 0.00 0.42 0.05 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.28 0.00 0.01 0.38 0.00 0.00 0.00 0.01 0.78 0.09 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.49 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.31 0.04 0.15 0.04 0.00 0.00 0.00 0.00 0.06 0.13 0.01 0.00 0.00 0.26 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.03 0.00 0.00 0.21 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.14 0.02 0.01 0.01

Revision 1
I:\06\2212A\0400\0401\Rev1\CH2\2_2Climate\0632212A_2_2_TBL2_2-5to8_23JUL10.xls\tbl2.2-7

Golder Assoicates

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TABLE 2.2-7 DAILY SUMMARIES OF METEOROLOGICAL DATA AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Deg F Ave Min Max 23.60 19.80 26.50 24.54 20.20 29.70 24.93 20.70 30.10 28.40 23.50 32.30 31.40 28.20 34.30 34.45 31.30 38.10 35.05 27.10 38.20 44.93 26.40 68.20 54.26 42.30 71.40 39.43 35.10 42.80 35.82 33.10 38.10 38.45 36.40 41.90 39.39 31.40 48.00 43.55 35.10 56.60 42.53 35.90 51.10 39.55 35.90 46.50 37.75 25.00 50.80 44.51 33.90 50.50 35.54 33.80 37.80 32.18 28.40 34.80 31.63 23.10 38.90 41.07 30.00 58.60 44.06 34.60 50.00 37.61 29.60 50.20 38.24 29.30 48.50 37.13 24.90 51.30 44.93 27.80 67.60 54.49 40.00 73.20 44.10 33.80 55.20 41.05 29.10 56.00 38.35 25.00 55.50 38.48 30.10 49.80 41.97 29.90 58.10 38.37 33.80 43.20 31.10 22.50 42.40 29.63 21.70 41.50 29.36 19.90 44.70 34.93 20.80 54.40 43.00 30.60 64.80 39.63 27.20 55.50 35.88 25.20 48.20 39.41 26.40 59.80 40.99 32.80 53.70 33.17 19.90 46.40 34.02 28.20 45.10 32.98 22.50 45.40 28.00 19.00 36.10 37.25 19.20 59.40 41.90 31.80 49.90 30.37 23.90 36.10 27.95 16.10 40.90 38.65 30.00 50.10 31.05 22.80 43.80 17.30 12.20 22.50 10.84 4.80 14.50 8.65 -2.10 22.90 12.94 5.30 19.20 5.70 -0.40 11.60 -0.58 -5.40 8.10 -2.49 -8.00 1.90 -7.82 -16.20 0.00 2.88 -4.90 10.00 8.71 -6.20 24.80 5.40 -7.30 12.70 -10.10 -14.00 -6.30 -11.08 -16.80 -6.10 -8.40 -24.70 6.30 25.41 8.50 35.60 31.13 25.80 38.80 22.03 14.60 28.70 23.39 12.70 34.20 22.44 17.10 31.30 18.43 17.50 20.20 17.80 16.30 19.40 14.36 0.20 20.90 -5.34 -9.50 -2.20 3.57 -2.40 8.80 10.15 7.50 14.40 15.25 13.10 18.00 11.20 7.70 16.30 13.83 3.10 23.20 5.05 -0.80 14.70 -0.17 -5.70 2.80 Barometric Pressure in Hg Ave Min Max 27.44 27.42 27.46 27.37 27.31 27.44 27.35 27.30 27.42 27.38 27.32 27.42 27.12 27.04 27.29 27.27 27.13 27.36 27.46 27.35 27.54 27.31 27.10 27.50 27.02 26.96 27.13 27.18 27.13 27.22 27.30 27.21 27.42 27.41 27.38 27.44 27.30 27.22 27.37 27.09 26.88 27.21 26.86 26.80 27.06 27.25 27.08 27.35 27.07 26.75 27.34 26.69 26.60 26.82 27.00 26.84 27.16 27.12 26.98 27.17 26.84 26.74 26.95 26.97 26.94 27.01 27.22 26.98 27.43 27.48 27.34 27.58 27.26 27.16 27.44 27.43 27.32 27.49 27.14 26.95 27.31 26.83 26.74 26.95 27.08 26.97 27.13 27.17 27.10 27.32 27.44 27.34 27.49 27.32 27.25 27.44 27.21 26.98 27.33 26.89 26.84 26.95 26.96 26.94 27.00 27.10 26.98 27.22 27.33 27.22 27.39 27.33 27.26 27.38 27.18 27.09 27.26 27.04 26.98 27.11 27.26 27.13 27.32 27.14 26.92 27.26 26.82 26.69 27.03 27.09 27.05 27.13 27.20 27.09 27.28 27.23 27.16 27.28 27.36 27.30 27.40 27.15 27.04 27.34 27.01 26.99 27.04 27.16 27.03 27.23 27.20 27.15 27.23 27.03 26.79 27.15 27.04 26.79 27.22 27.30 27.22 27.38 27.40 27.36 27.42 27.10 26.96 27.33 27.10 26.97 27.37 27.47 27.39 27.51 27.44 27.34 27.50 27.29 27.26 27.34 27.06 26.89 27.25 26.97 26.89 27.07 26.98 26.92 27.08 26.99 26.91 27.17 27.18 27.15 27.20 27.33 27.22 27.44 27.35 27.21 27.46 27.22 27.19 27.25 27.22 27.20 27.23 27.32 27.24 27.37 27.16 27.04 27.32 27.19 27.10 27.24 27.13 27.10 27.17 27.15 27.13 27.22 27.27 27.22 27.40 27.34 27.27 27.40 27.22 27.18 27.25 27.28 27.22 27.34 27.37 27.34 27.40 27.46 27.36 27.53 27.13 27.02 27.33 27.11 27.05 27.23 27.41 27.25 27.49 Relative Humidity % Ave Min Max 55.25 44.70 64.10 61.55 39.80 84.40 73.89 55.70 84.20 79.03 68.70 85.60 86.95 84.20 88.70 82.16 75.00 88.80 78.02 66.20 88.20 62.83 27.70 83.90 51.76 28.30 77.00 81.95 75.40 88.20 88.32 86.10 89.40 84.79 73.70 89.50 72.19 51.30 87.20 68.87 35.00 87.60 78.65 61.00 87.80 69.80 47.80 86.30 60.78 37.40 80.30 53.59 42.00 68.90 77.25 69.90 83.70 81.20 71.90 87.20 74.29 62.90 81.50 67.86 46.00 81.50 59.58 47.10 71.70 55.88 32.00 72.80 60.56 33.80 85.40 58.01 29.80 80.50 48.55 18.40 72.20 39.76 14.60 66.10 37.60 20.30 54.30 46.26 26.90 67.10 44.55 22.20 65.10 56.35 43.30 70.20 46.44 22.70 63.00 64.27 54.30 78.40 66.16 41.30 79.70 61.83 35.60 84.20 59.69 30.30 75.90 50.63 25.50 72.50 40.19 15.50 56.70 54.15 33.90 71.20 48.13 22.80 65.90 46.00 17.80 65.40 41.09 24.20 57.40 49.79 25.80 70.30 59.78 34.90 71.80 61.29 37.50 83.30 68.88 51.60 78.10 58.14 29.90 76.80 52.03 38.50 77.00 77.72 64.30 87.80 68.05 46.90 82.30 55.95 40.00 69.70 62.95 39.20 74.20 73.96 65.30 79.70 72.79 66.80 76.00 66.13 45.80 75.20 71.92 66.40 77.20 73.90 70.60 76.30 67.85 53.60 73.40 69.40 64.70 71.40 64.69 55.20 72.30 65.21 57.40 72.40 62.22 45.80 71.60 70.60 66.50 76.50 63.36 57.60 66.20 63.05 58.70 65.60 61.88 52.70 69.90 67.46 59.30 72.30 71.72 61.00 79.10 78.53 68.80 82.50 76.11 66.10 82.80 82.30 78.90 84.70 81.38 80.60 82.00 80.54 79.10 81.80 78.89 70.40 81.90 68.08 65.20 69.80 72.90 69.60 75.60 74.73 72.50 76.30 71.71 63.00 78.70 74.81 70.60 78.20 68.72 60.00 73.80 73.70 71.90 75.60 69.85 63.00 73.50 Wind Speed mph Ave Min Max 16.03 8.90 19.70 5.63 2.40 9.10 4.36 2.50 6.70 14.52 4.70 20.10 1.00 15.60 7.15 7.20 1.90 4.66 2.60 12.40 7.40 12.90 7.40 18.60 12.95 9.40 17.90 9.76 3.40 15.80 10.25 4.60 16.60 3.21 1.00 7.30 9.88 5.00 15.80 8.95 5.40 12.80 9.49 4.40 14.10 10.73 5.50 18.20 13.10 7.20 20.20 11.59 5.20 19.40 11.88 7.50 16.20 10.76 6.00 15.20 9.24 4.40 16.10 7.94 2.30 12.20 11.69 6.70 15.80 9.28 6.30 13.30 13.35 7.70 19.70 8.43 3.70 11.70 10.13 5.00 18.20 12.60 8.20 20.20 11.28 4.10 17.50 8.60 4.40 17.80 6.32 2.80 8.90 10.06 5.90 16.00 9.13 3.50 21.20 8.43 3.00 15.70 5.95 3.30 8.30 7.49 4.50 10.90 9.12 5.00 12.20 13.27 8.90 18.20 12.16 9.40 16.70 8.10 5.00 11.90 8.60 2.10 12.90 12.08 8.60 16.10 13.40 7.90 23.20 9.22 4.70 14.80 7.89 4.10 11.20 14.13 8.20 20.00 9.61 2.70 14.90 10.64 6.30 18.00 9.41 4.70 14.40 9.05 2.30 15.00 9.03 4.40 13.80 12.80 5.90 17.90 19.39 11.80 26.40 12.50 6.90 17.50 13.35 4.70 17.70 5.12 1.80 10.10 7.87 3.50 11.30 6.72 3.90 10.60 5.18 2.90 7.80 7.41 4.00 9.70 9.82 5.60 13.90 13.68 8.90 18.90 10.13 4.10 17.70 9.19 3.30 17.30 6.24 1.60 10.30 10.77 5.60 16.20 10.12 6.00 14.50 9.64 6.70 13.70 11.76 9.20 15.30 10.83 3.50 17.20 9.53 4.30 17.60 7.65 1.90 14.40 8.70 2.50 13.90 13.00 10.50 15.50 10.75 4.10 19.60 16.17 13.10 21.50 25.09 21.20 28.80 24.10 19.90 28.20 16.34 11.20 21.50 8.30 4.10 14.00 12.30 7.70 16.00 8.93 3.90 11.00 8.82 5.90 12.00 Wind Direction compass deg Ave Min Max 286.71 268.00 303.00 199.83 43.00 285.00 17.00 141.00 74.83 118.42 100.00 137.00 161.04 19.00 358.00 231.67 2.00 352.00 228.29 2.00 348.00 214.83 201.00 232.00 267.25 220.00 333.00 151.13 2.00 349.00 47.83 18.00 69.00 100.00 10.00 351.00 177.79 151.00 215.00 262.38 219.00 288.00 210.21 16.00 352.00 298.79 269.00 356.00 215.04 197.00 253.00 255.88 194.00 301.00 305.04 271.00 334.00 330.71 269.00 353.00 288.83 222.00 344.00 221.83 150.00 302.00 289.42 255.00 322.00 251.17 207.00 292.00 264.21 200.00 316.00 233.04 160.00 310.00 193.25 162.00 219.00 248.83 216.00 307.00 255.29 236.00 286.00 255.08 230.00 288.00 238.83 182.00 296.00 212.96 184.00 268.00 211.33 123.00 250.00 302.17 71.00 347.00 257.54 180.00 314.00 248.92 227.00 263.00 247.33 199.00 272.00 218.13 207.00 229.00 207.79 182.00 227.00 209.92 154.00 308.00 286.00 209.00 328.00 212.75 187.00 227.00 240.92 182.00 295.00 209.21 139.00 280.00 233.46 137.00 310.00 267.92 229.00 312.00 264.54 18.00 338.00 240.08 209.00 282.00 240.75 5.00 360.00 274.38 16.00 332.00 251.71 218.00 282.00 254.83 228.00 291.00 295.88 248.00 313.00 315.96 291.00 348.00 306.63 231.00 336.00 217.58 42.00 258.00 152.08 3.00 335.00 231.79 1.00 349.00 230.17 16.00 359.00 119.04 19.00 342.00 256.38 228.00 291.00 283.13 267.00 296.00 233.71 193.00 255.00 60.29 29.00 232.00 73.88 2.00 345.00 285.38 222.00 329.00 212.33 160.00 261.00 226.29 205.00 266.00 253.33 233.00 270.00 279.00 16.00 320.00 245.38 216.00 297.00 268.79 20.00 347.00 94.54 57.00 129.00 135.04 125.00 148.00 211.25 116.00 306.00 290.13 278.00 306.00 319.46 306.00 329.00 315.79 302.00 327.00 285.25 259.00 322.00 241.17 148.00 329.00 241.63 209.00 303.00 301.46 280.00 318.00 293.50 267.00 335.00 Sigma Solar Radiation compass deg W/m2 Ave Min Max Daily Sum Max 1314 6.20 7.67 8.90 221.00 1731 17.25 3.20 74.00 287.00 1289 11.15 3.60 32.70 212.00 649 102.00 7.83 6.60 8.60 460 9.49 6.90 30.00 96.00 979 13.43 7.10 36.90 216.00 1082 10.44 4.00 26.30 200.00 2814 5.54 3.60 8.00 464.00 2665 6.48 3.60 9.70 522.00 1210 8.56 4.70 33.50 278.00 516 6.44 5.60 7.70 99.00 675 122.00 14.84 4.00 45.20 2839 7.90 5.30 11.50 496.00 3029 7.46 3.30 15.60 496.00 1463 7.05 4.20 10.40 333.00 1724 333.00 7.75 3.90 11.40 1750 5.25 2.50 8.00 324.00 1487 8.63 3.90 24.30 307.00 792 7.99 6.60 10.10 233.00 727 7.53 5.00 10.40 146.00 579 7.18 3.80 10.50 105.00 1277 8.49 4.00 23.40 271.00 2540 7.08 4.20 11.70 446.00 2603 7.74 3.00 18.30 448.00 2550 6.47 3.80 9.40 442.00 2331 7.33 4.20 13.20 404.00 2535 6.20 2.90 12.10 438.00 2032 6.78 3.60 16.70 363.00 2351 6.75 3.60 13.50 424.00 2270 9.92 2.30 28.20 412.00 2323 10.79 3.50 27.90 411.00 1125 6.40 3.60 9.10 244.00 1957 8.98 4.30 38.10 387.00 756 10.18 5.10 29.30 142.00 1945 377.00 14.36 3.10 58.70 2142 9.33 3.80 36.70 390.00 2068 7.05 2.80 14.20 379.00 2049 5.00 2.70 7.60 363.00 2007 382.00 5.22 3.50 7.40 2023 8.37 3.50 24.20 373.00 1925 8.36 3.60 19.30 374.00 1755 5.16 3.10 7.60 340.00 1287 6.56 4.40 9.40 282.00 1885 8.05 3.50 18.70 360.00 1126 8.17 3.40 17.30 211.00 1194 6.56 3.60 9.10 250.00 1789 8.03 3.90 18.80 348.00 1522 5.40 3.20 10.10 344.00 1203 258.00 7.04 3.50 12.20 676 167.00 8.01 3.60 28.60 1533 2.50 10.80 323.00 6.00 1533 2.80 5.73 9.10 328.00 1032 6.10 7.42 8.40 309.00 877 7.31 6.30 8.70 179.00 1025 7.29 6.20 13.60 195.00 1626 11.99 2.50 48.70 321.00 760 10.08 5.70 24.90 153.00 1071 283.00 8.20 4.20 16.30 1512 9.55 2.40 24.40 299.00 933 5.88 3.30 8.10 205.00 1465 6.20 4.50 9.20 321.00 1437 293.00 6.83 5.50 8.00 1526 3.00 23.10 6.43 322.00 1340 9.00 3.70 31.10 348.00 1224 8.95 4.70 22.00 273.00 1551 7.39 5.10 17.40 319.00 1563 6.22 2.90 20.80 297.00 985 4.73 2.70 6.70 186.00 1369 5.12 3.40 13.50 267.00 1093 8.71 3.20 32.10 232.00 855 4.49 2.70 6.20 177.00 699 8.95 5.50 14.70 157.00 649 5.85 4.90 6.90 129.00 723 6.21 5.60 6.90 136.00 774 6.01 4.80 10.80 164.00 1591 5.08 4.50 5.70 326.00 672 4.68 4.50 5.10 136.00 781 4.70 4.30 5.40 155.00 1575 5.16 4.10 7.00 324.00 1278 6.24 3.60 12.60 285.00 1543 307.00 5.30 3.20 12.60 1241 6.84 4.30 26.60 260.00 1554 328.00 6.07 3.90 13.60 Rain in Method

Day 10/10/2009 10/11/2009 10/12/2009 10/13/2009 10/14/2009 10/15/2009 10/16/2009 10/17/2009 10/18/2009 10/19/2009 10/20/2009 10/21/2009 10/22/2009 10/23/2009 10/24/2009 10/25/2009 10/26/2009 10/27/2009 10/28/2009 10/29/2009 10/30/2009 10/31/2009 11/1/2009 11/2/2009 11/3/2009 11/4/2009 11/5/2009 11/6/2009 11/7/2009 11/8/2009 11/9/2009 11/10/2009 11/11/2009 11/12/2009 11/13/2009 11/14/2009 11/15/2009 11/16/2009 11/17/2009 11/18/2009 11/19/2009 11/20/2009 11/21/2009 11/22/2009 11/23/2009 11/24/2009 11/25/2009 11/26/2009 11/27/2009 11/28/2009 11/29/2009 11/30/2009 12/1/2009 12/2/2009 12/3/2009 12/4/2009 12/5/2009 12/6/2009 12/7/2009 12/8/2009 12/9/2009 12/10/2009 12/11/2009 12/12/2009 12/13/2009 12/14/2009 12/15/2009 12/16/2009 12/17/2009 12/18/2009 12/19/2009 12/20/2009 12/21/2009 12/22/2009 12/23/2009 12/24/2009 12/25/2009 12/26/2009 12/27/2009 12/28/2009 12/29/2009 12/30/2009 12/31/2009

Daily Sum

0.00

Tipping Bucket

0.01 0.00 0.01 0.07 0.05 0.01 0.02 0.00 0.03 0.01 0.00 0.00 0.00 0.04 0.04 0.01 0.00 0.01 0.00 0.00 0.00 0.01 0.01 0.02 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.01 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.02 0.10 0.00 0.01 0.04 0.02 0.01 0.00 0.03 0.01 0.03 0.00 0.00 0.05 0.03 0.00 0.00 0.00 0.01 0.00 0.00 0.11 0.02 0.18 0.00 0.30 0.26 0.08 0.01 0.01 0.01 0.00

Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Tipping Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket Weighing Bucket

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TABLE 2.2-8 MONTHLY SUMMARIES OF METEOROLOGICAL DATA BY YEAR AT THE SOUTH HEART LIGNITE MINE STATION Air Temperature Year Month Deg F Ave Min Max October 35.61 10.5 63.4 2006 November 31.63 -7 74 December ND ND ND January ND ND ND February 6.36 -16.8 29.1 March 40.40 18.2 76.6 April 41.26 7.8 80.3 May 54.98 37.2 86.5 June 65.07 39.3 90.4 2007 July 75.69 47.7 107.5 August 68.50 43.1 96.7 September 58.82 28.5 100.4 October 46.33 20.4 79.2 November 31.69 -3.7 65.1 December 19.65 -6.5 53.1 January 16.36 -23.5 54.4 February 18.56 -11 51.1 March 31.22 -5.5 64.2 April 41.30 15.1 79.5 May 53.24 29.5 82.7 June 61.31 39.7 92.7 2008 July 72.69 47.8 97.6 August 70.94 40.4 100.2 September 57.47 37.2 89.5 October 45.02 15.9 76.4 November 32.08 9.5 71.1 December 10.14 -24 44.6 January 14.78 -21.3 40.7 February 16.77 -9.1 42.9 March 25.06 -17.2 61.9 April 39.69 12.2 79 May 65.17 47.6 79.4 June 59.56 32.6 84.8 2009 July 64.93 45.5 92.3 August 65.20 45.2 95.7 September 63.59 36.6 92.1 October 36.66 19.8 71.4 November 37.57 16.1 73.2 December 9.40 -24.7 43.8 ND = No data recorded for this parameter during this month Barometric Pressure in Hg Ave Min Max 27.18 26.79 29.16 27.14 26.63 27.6 ND ND ND ND ND ND 27.28 26.81 27.57 27.18 26.76 27.64 27.21 26.75 27.76 27.16 26.77 27.51 27.14 26.43 27.53 27.22 26.97 27.48 27.20 26.93 27.52 27.17 26.72 27.55 27.19 26.72 27.7 27.21 26.69 27.6 27.13 26.76 27.57 27.09 26.38 27.76 27.11 26.64 27.63 27.17 26.73 27.69 27.14 26.53 27.53 27.12 26.77 27.57 27.14 26.7 27.5 27.16 26.78 27.4 27.15 26.76 27.49 27.27 26.92 27.56 27.30 26.88 27.75 27.19 26.64 27.92 27.12 26.58 27.63 27.20 26.64 27.76 27.76 27.21 26.47 27.15 26.71 27.75 27.19 26.77 27.68 27.15 26.95 27.28 27.16 26.85 27.59 27.26 26.91 27.48 27.22 26.86 27.51 27.24 26.75 27.51 27.17 26.6 27.54 27.17 26.69 27.58 27.23 26.79 27.53 Relative Humidity % Ave Min Max 60.93 0.2 85.3 61.72 18.1 89.7 ND ND ND ND ND ND 67.64 40.7 84.2 63.63 16.2 93.5 60.67 16 89.8 68.81 22.2 93.7 67.56 28.2 92.7 56.22 9.6 92.8 55.86 9.8 92.5 55.17 11.7 91.6 60.75 13.3 91.7 13.9 88 55.75 67.05 31.3 85.9 62.10 23.4 87.8 69.50 31.3 87.5 58.48 6.5 89.2 50.80 9.6 90 55.60 14.5 90.9 60.18 16 90.9 47.82 6.4 90.9 51.15 10.1 90.7 57.44 7.5 90.3 57.33 11.9 89.7 71.51 25.8 89.9 68.41 47.1 87.3 68.35 47.9 88 71.62 47.4 88.9 70.83 32.6 86.8 65.12 9.3 89.2 45.54 21.9 78.9 64.84 23.7 91 64.93 17.8 90.5 62.67 12 91.1 56.31 9.7 90.8 73.25 27.7 89.5 54.58 14.6 87.8 71.01 39.2 84.7 Sigma compass deg Min 3 2.5 ND ND 3 3 2.4 1.7 2.7 2.2 2.8 2.5 2.2 2.7 2.8 2.7 2.4 2.4 2.4 2.8 2.8 2.6 3 1.8 2.3 2.6 2.7 1.9 2.3 1.4 2.3 3.7 2.3 2.9 2.4 2.3 2.5 2.3 2.4 Wind Speed mph Min 1 0 ND ND 1.4 1 1.6 1.4 1.2 1.2 1.9 1.8 1.2 1.4 1.5 1.3 1 2.8 2.7 2.5 1.3 2 1.8 1.9 1 2.1 2.4 2.2 1 2 1 2.3 2 2 1.8 1 1 2.1 1.6 Solar Radiation Rain W/m2 in Ave Daily Sum Monthly Sum ND ND ND ND ND ND ND ND ND ND 2086.00 ND 5166.27 0.44 5069.06 3.84 6292.10 1.28 6453.45 1.48 5035.26 0.81 4139.67 1.55 2307.23 0.35 1593.47 0.14 1187.10 0.18 1523.19 0.11 2056.86 0.25 3422.71 0.17 4890.07 0.32 5026.94 1.66 5722.23 1.26 6482.84 0.96 5503.97 1.57 3813.33 0.77 2761.06 1.43 1355.43 0.56 1165.87 0.21 1678.06 0.19 2488.82 0.39 4001.13 0.75 4788.50 0.22 5385.00 ND 5514.87 2.56 5630.74 2.08 4925.65 1 4096.87 1.55 1467.81 ND 1834.50 0.21 1171.74 1.32

Ave 7.86 7.45 ND ND 9.45 8.65 9.03 10.37 11.54 11.85 12.01 11.48 9.32 8.52 7.77 8.48 9.36 9.55 10.22 9.99 11.43 13.20 12.06 10.11 9.06 7.53 7.53 6.31 7.16 7.48 8.76 11.29 11.91 11.45 12.08 11.52 8.64 7.57 6.87

Max 39 38.8 ND ND 40.7 53.5 54.4 66.6 70.3 59.7 56.8 61.1 55.1 71.5 52.6 50.4 56.2 61 67 58.3 57.6 64 60.1 60.9 62.3 48.2 65.9 49.7 60.4 54.8 63.6 46.1 58.7 55.4 66.6 60.2 74 58.7 48.7

Ave 12.14 10.90 ND ND 9.55 11.36 11.21 12.91 10.69 9.67 10.13 10.04 10.08 11.84 9.63 10.28 9.62 11.36 12.17 13.27 11.53 10.85 11.19 10.13 11.74 11.62 12.63 13.90 10.64 12.48 11.12 10.69 9.44 8.70 9.62 10.63 10.47 10.04 11.27

Max 22.4 26.2 ND ND 23.4 30.1 36.2 36.9 33.2 23.2 26.1 28.1 24.2 28.4 22.6 25.8 22.6 32.9 30.9 29.6 29.1 33 33.4 25.1 32.3 30.6 28.6 32.9 24.4 30.8 27.7 20.8 24 23 30 33 26 23.2 28.8

Revision 1
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