20211229_ESC

Waycaster Stone Co, Inc.
Mountain Mist Mine
Skimmer Basins
Skimmer Size Disturbed Drainage Surface Required Storage Required Spillway Baffle Skimmer
Basins (Ft) Area Acres Area Acres Area ft' Surface ft' Volume ft' Volume ft' length ft Spacing ft Orifice (in)
MM SB1
18 X 39
0.085
1.21
702
650
1620
153
4.0
9.75
0.93
MM SB2
10 X 20
0.04
0.31
200
18S.25
357
72
4.0
5.00
0.49
MM S133
20 X 90
1.02
2.28
1800
1745.3
4437
1836
7.0
22.50
1.38
MM SB3A
10 X 20
0.044
0.3
200
188.5
357
79.2
4.0
5.00
0.49
MM SB4
10 X 26
0.069
0.38
260
250.25
483
124.2
4.0
6.50
O.S6
MM SB5
10 X 26
0.07
0.37
260
250.25
483
126
4.0
6.50
0.56
MM SB6
10 X 29
0.028
0.55
290
282.75
546
50.4
4.0
7.25
0.59
MM SB7
10 X 20
0.1
0.23
200
185.25
357
180
4.0
5.00
0.49
MM SB8
10 X 38
0.078
0.62
380
370.5
735
140.4
4.0
9.50
0.68
MM SB9
10 X 28
0.03
0.57
280
279.5
525
54
4.0
7.00
0.58
MM SB10
10 X 37
0.25
0.43
370
360.43
714
450
4.0
9.25
0.67
MM S1311
10 X 24
0.073
0.32
240
230.75
441
131.4
4.0
6.00
0.54
MM SB 12
10 X 27
0.085
0.36
270
262.6
SO4
153
4.0
6.75
0.57
MM SB13
7 X 20
0.05
0.17
140
136.2
204
90
4.0
5.00
0.41
*Due to geographical constrains some traps are non symmetrical but will beat a 2:1 min ratio and have the minimum surface area (see plan for trap geometry)
Area Total
5592 ft2
Acres 0.1284 ac