2023-11-20_PERMIT FILE - M2023040

• Permit No: M2023040
• IBM Index Class Name: Permit File
• Doc Date: 11/20/2023
• Doc Name: Application
• From: MA Concrete
• To: DRMS
• Email Name: ACY
• Email Name: THM
• Email Name: EL1
• Media Type: D
• Archive: No

7/27/23,1:49 PM Exhibit G-3 Precipitation Frequency Data Server
NOAA Atlas 14,Volume 8,Version 2
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Location name:Whitewater,Colorado,USA* '``,
IN
Latitude:38.9929',Longitude:-108.4754°
Elevation:4672 ft**
source:ESRI Maps NOW
'"source:USGS ` m
POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perica,Deborah Martin,Sandra Pavlovic,Ishani Roy,Michael St.Laurent,Carl Trypaluk,Dale
Unruh,Michael Yekta,Geoffery Bonnin
NOAA,National Weather Service,Silver Spring,Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)'
Average recurrence interval(years)
Duration����������
1 2 5 10 25 50 100 200 500 1000
5-min 0.092 0,135 0,209 0.273 0.364 0.437 0.512 0.591 0,699 0.784
(0.071-0.119) (0.104-0.176) (0.161-0.273) (0.208-0.357) (0.270-0.497) (0.317-0.603) (0.360-0.724) (0.400-0.858) (0.456-1.04) (0.498-1.18)
10-min 0.134 0.198 0.306 0.399 0.533 0.640 0.750 0.866 1.02 1.15
(0.103-0.174) (0.153-0.257) (0.235-0.399) (0.305-0.523) (0.395-0.728) (0.464-0.884) (0.527-1.06) (0.585-1.26) (0.667-1.53) (0.730-1.73)
15-min 0 0.164 0.241 0.373 0.487 0.650 0.780 ) ( 0.915 ) 1.06 ) ( 1.25 ) ( 1.40 )
( .126-0.212) (0.186-0.314) (0.287-0.487) (0.372-0.638) (0,482-0.888) (0.565-1.08 0.642-1.29 (0.713-1.53 0.814-1.86 0.890-2.11
30-min 0.227 0.338 0.519 0.669 0.877 1.04 1.20 1.36 1.57 1.74
(0.175-0.295) (0.260-0.439) (0.399-0.677) (0.511-0.876) (0.646-1.19) (0.748-1.42) (0.837-1.68) (0.915-1.96) 1(1.02-2.34) (1.10-2.62)
60-min 0.302 0,424 0.624 7F 0,789 1.01 1.19 1.36 1.54 1.76 1.94
(0.233-0.392) (0.327-0.552) (0.479-0.813) (0.602-1.03) 1(0.748-1.37) (0.857-1.63) (0.952-1.91) 1 (1.03-2.21) 1(1.15-2.62) (1.23-2.92)
2-hr 0.377 0.511 0.729 0.908 1.15 1.34 1,52 1.71 1.96 2.14
(0.294-0.484) (0.399-0.656) (0.567-0.938) (0.702-1.17) 1(0.860-1.54) (0.980-1.81) (1.08-2.11) 1 (1.17-2.43) (1.29-2.85) (1.38-3.17)
3-hr 0,432 0.560 0.770 0.944 1.18 1.37 1.56 1.74 1.99 2.18
(0.340-0.550) (0.440-0.714) (0.604-0.984) (0.736-1.21) (0.893-1.57) 1 (1.01-1.84) 11 (1.11-2.14) 1 (1.20-2.46) (1.33-2.88) (1.42-3.21)
6-hr 0.547 0.665 0.861 1.03 1.26 1.44 1.63 1.83 2.09 2.29(0.436-0.688) (0.529-0.837) (0.683-1.09) 1(0.811-1.30) 1(0.967-1.65) 1 (1.08-1.92) 1 (1,19-2.21) 1 (1.28-2.54) 1(1.42-2.98) (1.52-3.32)
12-hr 0,674 0.802 1.02 1.20 1.45 1,66 1.86 2,08 ) ( 2.37 2,60
(0.544-0.837) (0.647-0.996) (0,817-1.26) (0.959-1.50) (1.13-1.88) (1.26-2.17) (1.38-2.49) (1.48-2.85 1.63-3.33} (1.75-3.70)
24-hr 0.806 0.948 1.19 1.39 1.68 1.91 2.15 2.39 2.73 2.99(0.659-0.988) (0.775-1.16) (0.967-1.46) 1 (1.13-1.72) 1 (1.33-2.14) 1 (1.48-2.46) 1 (1,61-2.83) 1 (1.73-3.23) (1.91-3.77) (2.04-4.18)
2-day 0.939 1.09 1,34 1.56 1.88 2.14 2.41 2.69 3.08 3,40
(0.779-1.14) 1(0.901-1.32) 1 (1.11-1.62) 11 (1.28-1.90) 1 (1.51-2.37) 1 (1.68-2.72) 1 (1.84-3.13) (1.98-3.58) (2.20-4.20) 1(2.36-4.67)
3-day 1.02 1.18 1.46 1.69 2.04 2.32 2.62 2.93 3.37 3.71
(0.856-1.23) (0.988-1.42) 1 (1.21-1.75) 1 (1.40-2.05) 1 (1.65-2.55) 1 (1.84-2.94) 11 (2.02-3.38) (2.18-3.87) (2.42-4.55) (2.60-5.06)
4-day 1.10 1.26 1.56 1.81 2.18 2.48 2.79 3.12 3.58 3.94
(0.921-1.31) (1.06-1.51) (1.30-1.86) (1.51-2.17) (1.78-2.71) (1.98-3.11) (2.16-3.58) (2.34-4.09) (2.59-4.80) (2.79-5.34)
7-day 1.28 1.47 1.79 2.07 2.48 2.80 3.13 3.48 3.97 4.35
(1.09-1.51) 1 (1.25-1.74) 1 (1.52-2.12) 11 (1.75-2.46) 1 (2.04-3.03) 1 (2.26-3.46) 1 (2.46-3.96) (2.64-4.50) 1(2.91-5.24) 1(3.12-5.80)
10-day 1.44 1.65 1.99 2.29 ) ( 2.71 ) ( 3.04 3.39 ) ( 3.75 4.25 } ( 4.63 )
(1.24-1.69) (1.41-1.93) (1.70-2.34) (1.94-2.70 2.24-3.29 2.47-3.74) (2.68-4.24 2.87-4.80) (3.14-5.56 3.35-6.12
20-day 1.87 2,12 2.53 2.87 3.36 3.74 4.12 4.52 5,05 5,46
(1.63-2.17) 1 (1.84-2.45) 1 (2.19-2.93) (2.48-3.34) (2.82-4.00) (3.08-4.50) (3.30-5.06) (3.50-5.67) (3.79-6.47) (4.01-7.08)
30-day 2.23 2.52 2.99 3.39 3.93 4.35 4.77 5.19 5.75 6.17
(1.95-2.56) 1 (2.20-2.89) (2.61-3.44) (2.94-3.91) (3.3211.64) (3.61-5.18) (3.85-5.79) 1 (4.06-6.44) (4.36-7.29) (4.59-7.93)
45-day 2.68 3.04 3.62 4.08 4,71 5.18 5.64 6.10 6.68 7.12
(2.37-3.05) 1 (2.68-3.46) (3.18-4.13) (3.58-4.67) (4.01-5.49) (4.34-6.11) (4.60-6.77) 1 (4.81-7.47) 1 (5.11-8.37) (5.34-9.04)
60-day 3.07 3.50 4.17 4.71 5.42 5.94 6.43 6,91 7.52 7.94
(2.73-3.48) (3.11-3.96) (3.70 4.73) (4.15-5.36) (4.63-6.26) (4.99-6.94) (5.27-7.65) (5.48-8.39) (5.78-9.32) (6.01-10.0)
1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of partial duration series(PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency estimates
(for a given duration and average recurrence interval)will be greater than the upper bound(or less than the lower bound)is 5%.Estimates at upper bounds
are not checked against probable maximum precipitation(PMP)estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
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PF graphical
https:/Ihdse.nws.noaa.gov/pfds/pfds_printpage.html?lat=38.9929&Ion=-l08.4754&data=depth&units=engIish&series=pds 1/4