PERMFILE46989

• Permit No: C1981044
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Pages 60-167
• Section_Exhibit Name: Exhibit 18 Drainage Part 2
• Media Type: D
• Archive: No

Cyprus Empire Corporation

* *
* RESULTS TO DRAINAGE TO POND 9-P5
* (continued)
* *
*********************************************** ********************************
* *
* INPUT AND CALCULATED BASIN GEOMETRY
* *
* ELEV- DIS- AVG.
* ATZON STAGE AREA CHARGE DEPTH CAPACITY
* (ft) (ac) (cfs) (ft) (ac-fit)

* 0.0 0.03 0.00 0.00 0.00
* 0.3 0.04 0.00 0.25 0.01
* 0.5 0.04 0.00 0.49 0.02
* 0.8 0.04 0.00 0.73 0.03
* 1.0 0.04 0.00 0.96 0.04
* 1.3 0.04 0.00 1.19 0.05
* 1.5 0.05 0.00 1.42 0.06
* 1.8 0.05 0.00 1.65 0.07
* 2.0 0.05 0.00 1.87 0.08
* 2.3 0.05 0.00 2.09 0.09
* 2.5 0.05 0.00 2.31 0.11
* 2.8 0.05 0.00 2.52 0.12
* . 3.0 0.06 0.00 2.73 0.14
* 3.3 0.06 0.00 2.94 0.15
* 3.5 0.06 0.00 3.15 0.16
* 3.8 0.06 0.00 3.36 0.18 PRINCIPAL SPILLWAY #1
* 4.0 0.07 0.09 3.56 0.20
* 4.3 0.07 0.29 3.76 0.21
* 4.5 0.07 0.39 3.95 0.23
* 4.8 0.08 0.45 4.14 0.25
* 4.8 0.~5 PEAK STAGE
* 5.0 0.08 0.50 4.32 0.27 EMERGENCY SPILLWAY
* 5.7 0.09 11.90 4.79 0.33
* 5.8 0.10 15.40 4.85 0.34
* 5.9 0.10 19.28 4.91 0.35
* 6.0 0.10 23.51 4.97 0.36
* 6.5 0.11 53.12 5.26 0.41
* 7.0 0.12 90.21 5.54 0.47
* *
* RUNOFF PEAK PEAK SEDIMENT PEAK SETTLEABLE SEDIMENT
* VOLUME DISCHARGE CONCENTRATION CONCENTRATION YIELD
* (ac-ft) (cfs) (mg/1) (ml/1) (tons)

* IN 0.314 1.385 57740.00 35.883 14.27
* OU T 0.314 0.451 3469.54 1.406 1.25
* *
* *
* AVERAGE SETTLEABLE CONCENTRATION:
•
* TIME OF VOLUME WEIGHTED DURING ARITHMETIC DURING
* SIGNIFICANT TIME OF PEAK TZME OF PEAK
* CONCENTRATION SIGN. CONC. 24 HOUR SIGN. CONC. 24 HOUR
* (hrs) (ml/1) (ml/1) (ml/1) (ml/1)

Exhibit 18 Revised 12/8/ 89
-83-