2014-01-21_REVISION - M1999058 ‎(9)‎

• Permit No: M1999058
• IBM Index Class Name: Revision
• Doc Date: 1/21/2014
• Doc Name: Technical revision 03
• From: Lewicki and Assoc
• To: DRMS
• Type & Sequence: TR3
• Email Name: DMC
• Media Type: D
• Archive: No

Location: Drainage Area 4
1. Runoff Curve Number (CN)
Cover description CN Soil Group Area(Acre)
Forest 79 C &D 0.0
Disturbed 87 D 0.38
CN (weighted): 87
Total Area: 0.38 Acre
2. Runoff
Return Period:
Rainfall, P:
Runoff, Q:
Runoff Volume:
Time of Concentration (Tc)
Peak Flow
10 -Year
1.60 in
0.6065 in
0.0192 Acre -Ft
0.023 hrs, 1.4 min.
0.35 cfs
The minimum volume plus 10% of the sump will be 0.02112 acre -feet.
Sump 4 will have a surface area of 361.2 square feet.
Sump 4 will have a minimum depth of 2.55 feet.
The collection ditch to Sump 4 is located on an extremely steep sideslope and will require monitoring
for maintenance.
Location: Drainage Area 5
1. Runoff Curve Number (CN)
Cover description
Forest
Disturbed
CN Soil Group Area(Acre)
79 C &D 2.47
87 D 0.2
CN (weighted): 79
Total Area: 2.520 Acre
2. Runoff
Return Period:
Rainfall, P:
Runoff, Q:
Runoff Volume:
Time of Concentration (Tc)
Peak Flow
10 -Year
1.60 in
0.306 in
0.0250 Acre -Ft
0.194 hrs, 11.7 min.
0.88 cfs
The minimum volume plus 10% of the sump will be 0.0275 acre -feet.
Yule Quarry January 2014 29