HYDRO21680

• Permit No: C1981019
• IBM Index Class Name: Hydrology
• Doc Date: 4/30/2007
• Doc Name: 1st Quarter 2007 DMRS ‎(CO-00045161)‎
• From: Colowyo Coal Company L.P.
• To: WQCD
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

Colowyo Mine -Ambient Air Network
1st Quarter Precipitation and Temperature Data
Daily Total Precipitation
(inches)
Date SCN76 WSTPT SCN34 GOSSARD
2/1/2007 0.01 0.01 0.01
2/2/2007 0.00 0.00 0.00
2/3/2007 0.00 0.00 0.00
2/4/2oD7 0.00 0.00 0.00
x5/2007 0.00 0.00 0.00
2/6/2007 0.00 0.00 0.00
zn/zoo7 o.ao a.oo o.oo
ve/zoa7 0.00 o.DO a.oo
z/s/zoD7 0.00 0.0o D.oo o.oo
v1a/zoo? 0.00 0.00 0.00 0.00
vn/2oo7 o.1s o.1a o.os D.Ds
2/12/2007 0.19 0.18 0.07 0.06
2/13/2007 0.01 0.01 0.00 0.00
2/14/2007 0.01 0.01 0.01 0.01
2/15/2007 0.00 0.00 0.00 0.00
2/16/2007 0.01 D.01 0.00 0.06
vn/2om o.oo o.oo o.oo 0 00
2/18/2007 0.00 0.00 0.00 0.00
2/19/2007 0.43 0.47 0.36 0.19
v2a/2oo7 D.oo a.oo o.oo o.oo
2/21/2007 0.00 0.00 0.00 0.00
2/22/2007 0.00 0.00 0.00 0.00
2/23/2007 0.18 0.18 0.12 0.01
x24/2007 0.03 0.03 0.01 0.01
v2s/2oo7 0.00 0.00 0.00 0.00
v2snoo7 o.oz o.oo o.o0 0.01
x27/2007 0.45 0.45 0.37 0.22
x28/2007 0.01 0.01 0.01 0.02
Section 34 Temperature Data
24 Hour Avere9e One Hour Max One Hour Min
Temperature Temperature Temperature
(°F) (°Fl (°r)
5.fi 11.3 -2.6
11.3 18.4 -3.7
25.6 33.0 16.4
33.5 38.9 27.5
37.2 46.0 30.7
44.3 51.4 40.0
41.1 47.4 36.4
39.3 42.8 35.3
38.2 43.9 34.4
38.9 45.6 34.7
37.3 41.4 35.4
30.6 35.3 24.7
24.5 28.2 22.1
22.2 24.5 20.3
26.0 30.1 21.5
32.4 38.4 27.9
33.5 41.0 25.3
37.4 45.7 29.3
30.1 37.1 18.7
25.0 34.5 13.1
36.4 45.0 28.3
42.4 50.8 33.4
33.2 41.7 77.8
19.1 24.8 75.3
23.9 30.6 79.9
25.8 32.2 21.4
26.3 36.1 17.3
1s.1 z0.1 1os