2016-02-19_PERMIT FILE - M2016010 ‎(5)‎

• Permit No: M2016010
• IBM Index Class Name: Permit File
• Doc Date: 2/19/2016
• Doc Name: Application 3 of 4
• From: Transit Mix Concrete Company
• To: DRMS
• Email Name: TC1
• Email Name: WHE
• Media Type: D
• Archive: No

Transit Mix Concrete Co.
Site Modifications
The quarry site itself is about 1000 feet higher than the weather service station and therefore
the actual temperatures would average about 2 to 5 degrees less. Yet, the pattern of variation
throughout the year and the average daily range of temperatures are probably similar. In winter,
the daily range may be somewhat less because of cold air drainage into the lower elevations of
the city and somewhat higher night temperatures at the quarry. Shallow temperature inversions
that are common in winter usually cause this pattern. During the growing season the quarry
would be expected to be cooler but would exhibit essentially the same pattern of variation on a
monthly and daily basis.
K.2.3 Precipitation
The average precipitation at the Colorado Springs Municipal Airport is 15.74 inches per year
(WRCC 2016). Table K-3 shows the variation in mean precipitation for Colorado Springs on a
monthly basis. This data show the rather even distribution of precipitation over the growing
season. The July/August increase over June reflects the usually reliable arrival of monsoonal
moisture from the Gulf of California. Further north in Denver, precipitation decreases in those
months. This is a reflection of the effectiveness of the Pikes Peak and Palmer Divide barriers in
creating a mild rain shadow effect in northeastern Colorado during the monsoon.
Table K-3 Monthly Mean Precipitation at Colorado Springs Municipal Airport, Colorado
Month
Jan
Feb
March
April
May
June
July
Aug
Sept
Oct
Nov
Dec
Annual
Mean
Precipitation
(in)
0.29
0.31
0.86
1.34
2.07
2.22
2.92
2.87
1.32
0.77
0.45
0.32
15.74
High
Precipitation
Jn)
1.17
2.45
2.42
7.5
5.67
8.00
5.27
7.04
5.91
5.01
2.21
1.05
27.58
Low
Precipitation
(in)
0.00
0.00
0.01
0.01
0.33
0.13
0.28
0.12
0.00
0.01
0.00
0.00
7.85
Data Source: WRCC 2016.
Anywhere else along the Front Range Corridor this Colorado Springs pattern is very unusual.
The pattern is a major factor in the usually successful re -vegetation programs conducted in the
Colorado Springs area. However, this pattern of increase precipitation in July and August is
primarily attributable to the heavy and often severe thunderstorms that Colorado Springs is
noted for. Thus, although precipitation levels appear excellent during this time, much of that
precipitation is not very effective moisture. That is, much of it runs off before it can soak into the
ground. But, this pronounced moisture peak during a time when most other areas are "crying
for rain" enhances the re -vegetation potentials in the Colorado Springs area.
Hitch Rack Ranch Quarry Permit Application
February 19, 2016
K-6