HomeMy WebLinkAbout7-23-19_Skimmer_CalcSkimmer Basin #1
Okay
3.24 Disturbed Area (Acres)
10.86 Peak Flow from 25-year Storm (cfs)
5832 Required Volume ft3
3531 Required Surface Area ft2
42.0 Suggested Width ft
84.0 Suggested Length ft
07/02/19 KCG
567.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 3.24 acres
35 Trial Top Width at Spillway Invert ft
102 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
21 Bottom Width ft
88 Bottom Length ft
1848 Bottom Area ft2
9367 Actual Volume ft3 Okay
3570 Actual Surface Area ft2 Okay
11 Trial Weir Length ft
0.5 Trial Depth of Flow ft
11.7 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
2.75 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
102'
NTS
5'
Bottom = 564.00
Top = 569.00
Weir = 568.00
Water = 567.50
2
Skimmer Basin #2
Okay
1.48 Disturbed Area (Acres)
4.15 Peak Flow from 25-year Storm (cfs)
2664 Required Volume ft3
1350 Required Surface Area ft2
26.0 Suggested Width ft
52.0 Suggested Length ft
07/02/19 KCG
571 lWater Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 1.48 acres
26 Trial Top Width at Spillway Invert ft
52 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
12 Bottom Width ft
38 Bottom Length ft
456 Bottom Area ft2
3050 Actual Volume ft3 Okay
1352 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
0.5 Trial Depth of Flow ft
5.3 Spillway Capacity cfs
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1 Orifice Size (1/4 inch increments)
2.82 Dewatering Time (days)
Suggest about 3 days
26'
NTS
2
52'
Okay
Skimmer Size
(Inches)
1.5
2
2.5
3
4
5
6
8
Bottom = 567.50
Top = 572.50
Weir = 571.50
Water = 571.00
------------
\ 2
Skimmer Basin #3
Okay
4.84 Disturbed Area (Acres)
13.59 Peak Flow from 10-year Storm (cfs)
8712 Required Volume ft3
4415 Required Surface Area ft2
47.0 Suggested Width ft
94.0 Suggested Length ft
07/22/19 KCG
574 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.84 acres
40 Trial Top Width at Spillway Invert ft
116 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
26 Bottom Width ft
102 Bottom Length ft
2652 Bottom Area ft2
12647 Actual Volume ft3 Okay
4640 Actual Surface Area ft2 Okay
15 Trial Weir Length ft
0.5 Trial Depth of Flow ft
15.9 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1.5 Orifice Size (1/4 inch increments)
4.10 Dewatering Time (days)
Suggest about 3 days
NTS
Skimmer Size
(Inches)
2
---------Tod= 575.50
\ Weir = 574.50
Skimmer Basin #4
Okay
2.88 Disturbed Area (Acres)
8.10 Peak Flow from 25-year Storm (cfs)
5184 Required Volume ft3
2634 Required Surface Area ft2
36.3 Suggested Width ft
72.6 Suggested Length ft
7/2/19 KCG
608 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 2.88 acres
34 Trial Top Width at Spillway Invert ft
78 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
20 Bottom Width ft
64 Bottom Length ft
1280 Bottom Area ft2
6767 Actual Volume ft3 Okay
2652 Actual Surface Area ft2 Okay
8 Trial Weir Length ft
0.5 Trial Depth of Flow ft
8.5 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
3.51 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
78'
NTS
5'
Bottom = 604.50
Top = 609.50
Weir = 608.50
Water = 608.00
2
Skimmer Basin #5
Okay
2.02 Disturbed Area (Acres)
5.68 Peak Flow from 25-year Storm (cfs)
3636 Required Volume ft3
1847 Required Surface Area ft2
30.4 Suggested Width ft
60.8 Suggested Length ft
7/2/19 KCG
607.5 Water Surface Elev.
Q25= C I A= .35 x 8.04 in/hr x 2.02 acres
26 Trial Top Width at Spillway Invert ft
72 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
12 Bottom Width ft
58 Bottom Length ft
696 Bottom Area ft2
4380 Actual Volume ft3 Okay
1872 Actual Surface Area ft2 Okay
6 Trial Weir Length ft
0.5 Trial Depth of Flow ft
6.4 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
2.85 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
72'
NTS
5'
Bottom = 604.00
Top = 609.00
Weir = 608.00
Water = 607.50
2
Skimmer Basin #6
Okay
1.62 Disturbed Area (Acres)
4.55 Peak Flow from 25-year Storm (cfs)
2916 Required Volume ft3
1478 Required Surface Area ft2
27.2 Suggested Width ft
54.4 Suggested Length ft
7/02/19 KCG
600 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 1.62 acres
27 Trial Top Width at Spillway Invert ft
55 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
15 Bottom Width ft
43 Bottom Length ft
645 Bottom Area ft2
3123 Actual Volume ft3 Okay
1485 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
0.5 Trial Depth of Flow ft
5.3 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1 Orifice Size (1/4 inch increments)
1.5
3.57 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
55'
NTS
5'
Bottom = 597.00
Top = 601.50
Weir = 600.50
Water = 600.00
2
Skimmer Basin #7
Okay
2.07 Disturbed Area (Acres)
5.81 Peak Flow from 25-year Storm (cfs)
3726 Required Volume ft3
1888 Required Surface Area ft2
30.7 Suggested Width ft
61.5 Suggested Length ft
7/2/19 KCG
604 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 2.07 acres
29 Trial Top Width at Spillway Invert ft
66 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
15 Bottom Width ft
52 Bottom Length ft
780 Bottom Area ft2
4600 Actual Volume ft3 Okay
1914 Actual Surface Area ft2 Okay
6 Trial Weir Length ft
0.5 Trial Depth of Flow ft
6.4 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
2.92 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
66'
NTS
5'
Bottom = 600.50
Top = 605.50
Weir = 604.50
Water = 604.00
2
Skimmer Basin #8
Okay
4.86 Disturbed Area (Acres)
13.64 Peak Flow from 25-year Storm (cfs)
8748 Required Volume ft3
4434 Required Surface Area ft2
47.1 Suggested Width ft
94.2 Suggested Length ft
07/02/19 KCG
613 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.86 acres
45 Trial Top Width at Spillway Invert ft
100 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
31 Bottom Width ft
86 Bottom Length ft
2666 Bottom Area ft2
12426 Actual Volume ft3 Okay
4500 Actual Surface Area ft2 Okay
13 Trial Weir Length ft
0.5 Trial Depth of Flow ft
13.8 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.75 Orifice Size (1/4 inch increments)
1.5
3.03 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
100'
NTS
5'
Bottom = 609.50
Top = 614.50
Weir = 613.50
Water = 613.00
2
Skimmer Basin #9
Okay
6.13 Disturbed Area (Acres)
17.21 Peak Flow from 25-year Storm (cfs)
11034 Required Volume ft3
5592 Required Surface Area ft2
52.9 Suggested Width ft
105.8 Suggested Length ft
7/22/2019 KCG
596.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 6.13 acres
55 Trial Top Width at Spillway Invert ft
108 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
37 Bottom Width ft
90 Bottom Length ft
3330 Bottom Area ft2
16034 Actual Volume ft3 Okay
5940 Actual Surface Area ft2 Okay
6 Trial Weir Length ft
1 Trial Depth of Flow ft
18.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
5.19 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
108'
NTS
5'
Bottom = 593.00
Top = 598.50
Weir = 597.50
Water = 596.50
2
Skimmer Basin #10
Okay
1.29 Disturbed Area (Acres)
3.62 Peak Flow from 25-year Storm (cfs)
2322 Required Volume ft3
1177 Required Surface Area ft2
24.3 Suggested Width ft
48.5 Suggested Length ft
07/02/19 KCG
592 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 1.29 acres
23 Trial Top Width at Spillway Invert ft
57 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
9 Bottom Width ft
43 Bottom Length ft
387 Bottom Area ft2
2857 Actual Volume ft3 Okay
1311 Actual Surface Area ft2 Okay
4 Trial Weir Length ft
0.5 Trial Depth of Flow ft
4.2 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1 Orifice Size (1/4 inch increments)
1.5
2.84 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
57'
NTS
5'
Bottom = 588.50
Top = 593.50
Weir = 592.50
Water = 592.00
2
Skimmer Basin #11
Okay
4.27 Disturbed Area (Acres)
11.98589 Peak Flow from 25-year Storm (cfs)
7686 Required Volume ft3
3895 Required Surface Area ft2
44.1 Suggested Width ft
88.3 Suggested Length ft
07/22/19 KCG
581.00 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.27 acres
50 Trial Top Width at Spillway Invert ft
80 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
32 Bottom Width ft
62 Bottom Length ft
1984 Bottom Area ft2
10283 Actual Volume ft3 Okay
4000 Actual Surface Area ft2 Okay
4 Trial Weir Length ft
1 Trial Depth of Flow ft
12.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
3.62 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
80'
NTS
5'
Bottom = 577.50
Top = 583.00
Weir = 582.00
Water = 581.00
2
Skimmer Basin #12
Okay
0.91 Disturbed Area (Acres)
2.55 Peak Flow from 25-year Storm (cfs)
1638 Required Volume ft3
830 Required Surface Area ftz
20.4 Suggested Width ft
40.7 Suggested Length ft
7/22/2019 KCG
579 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 0.91 acres
23 Trial Top Width at Spillway Invert ft
42 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
5 Bottom Width ft
24 Bottom Length ft
120 Bottom Area ftz
1712 Actual Volume ft3 Okay
966 Actual Surface Area ftz Okay
4 Trial Weir Length ft
1 Trial Depth of Flow ft
12.0 Spillway Capacity cfs
1.5 Skimmer Size (inches)
0.125 Head on Skimmer (feet)
0.75 Orifice Size (1/4 inch increments)
3.57 Dewatering Time (days)
Suggest about 3 days
23'
NTS
2
42'
Okay
Skimmer Size
(Inches)
1.5
2
2.5
3
4
5
6
8
5'
Bottom = 575.50
Top__ 581.00
Weir = 580.00
Water = 579.00
------------
\ 2
Skimmer Basin #13
Okay
3.45 Disturbed Area (Acres)
9.68 Peak Flow from 25-year Storm (cfs)
6210 Required Volume ft3
3147 Required Surface Area ft2
39.7 Suggested Width ft
79.3 Suggested Length ft
07/02/19 KCG
603 Water Surface Elev.
Q=.35x 8.02 in/hrx 3.45 ac
40 Trial Top Width at Spillway Invert ft
80 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
28 Bottom Width ft
68 Bottom Length ft
1904 Bottom Area ft2
7584 Actual Volume ft3 Okay
3200 Actual Surface Area ft2 Okay
10 Trial Weir Length ft
0.5 Trial Depth of Flow ft
10.6 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
2.92 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
80'
NTS
5'
Bottom = 600.00
Top = 604.50
Weir = 603.50
Water = 603.00
2
Skimmer Basin #14
Okay
4.28 Disturbed Area (Acres)
12.01 Peak Flow from 25-year Storm (cfs)
7704 Required Volume ft3
3905 Required Surface Area ft2
44.2 Suggested Width ft
88.4 Suggested Length ft
07/02/19 KCG
607 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.28 acres
36 Trial Top Width at Spillway Invert ft
109 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
24 Bottom Width ft
97 Bottom Length ft
2328 Bottom Area ft2
9306 Actual Volume ft3 Okay
3924 Actual Surface Area ft2 Okay
12 Trial Weir Length ft
0.5 Trial Depth of Flow ft
12.7 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
2.96 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
109'
NTS
5'
Bottom = 604.00
Top = 608.50
Weir = 607.50
Water = 607.00
2
Skimmer Basin #15
Okay
8.52 Disturbed Area (Acres)
23.92 Peak Flow from 25-year Storm (cfs)
15336 Required Volume ft3
7773 Required Surface Area ft2
62.3 Suggested Width ft
124.7 Suggested Length ft
07/02/19 KCG
593.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 8.52 acres
65 Trial Top Width at Spillway Invert ft
120 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
44 Bottom Width ft
99 Bottom Length ft
4356 Bottom Area ft2
21016 Actual Volume ft3 Okay
7800 Actual Surface Area ft2 Okay
8 Trial Weir Length ft
1 Trial Depth of Flow ft
24.0 Spillway Capacity cfs Okay
5 Skimmer Size (inches)
Skimmer Size
0.333 Head on Skimmer (feet)
(Inches)
1.75 Orifice Size (1/4 inch increments)
1.5
3.76 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
120'
NTS
5'
Bottom = 590.00
Top = 595.50
Weir = 594.50
Water = 593.50
3
Skimmer Basin #16
Okay
3.29 Disturbed Area (Acres)
9.24 Peak Flow from 25-year Storm (cfs)
5922 Required Volume ft3
3001 Required Surface Area ft2
38.7 Suggested Width ft
77.5 Suggested Length ft
07/02/19 KCG
572 Water Surface Elev.
Q25= C I A= .35 x 80.2 in/hr x 3.29 acres
40 Trial Top Width at Spillway Invert ft
77 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
22 Bottom Width ft
59 Bottom Length ft
1298 Bottom Area ft2
6405 Actual Volume ft3 Okay
3080 Actual Surface Area ft2 Okay
4 Trial Weir Length ft
1 Trial Depth of Flow ft
12.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
2.79 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
77'
NTS
5'
Bottom = 569.00
Top = 574.00
Weir = 573.00
Water = 572.00
3
Skimmer Basin #17
Okay
4.51 Disturbed Area (Acres)
12.66 Peak Flow from 25-year Storm (cfs)
8118 Required Volume ft3
4114 Required Surface Area ft2
45.4 Suggested Width ft
90.7 Suggested Length ft
07/02/19 KCG
617 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.51 acres
46 Trial Top Width at Spillway Invert ft
90 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
28 Bottom Width ft
72 Bottom Length ft
2016 Bottom Area ft2
9072 Actual Volume ft3 Okay
4140 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
1 Trial Depth of Flow ft
15.0 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
3.12 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
90'
NTS
5'
Bottom = 614.00
Top = 619.00
Weir = 618.00
Water = 617.00
3
Skimmer Basin #18
Okay
2.51 Disturbed Area (Acres)
7.05 Peak Flow from 25-year Storm (cfs)
4518 Required Volume ft3
2290 Required Surface Area ft2
33.8 Suggested Width ft
67.7 Suggested Length ft
07/02/19 KCG
617.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 2.51 acres
35 Trial Top Width at Spillway Invert ft
67 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
17 Bottom Width ft
49 Bottom Length ft
833 Bottom Area ft2
4605 Actual Volume ft3 Okay
2345 Actual Surface Area ft2 Okay
7 Trial Weir Length ft
0.5 Trial Depth of Flow ft
7.4 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
3.06 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
67'
NTS
5'
Bottom = 614.50
Top = 619.00
Weir = 618.00
Water = 617.50
3
Skimmer Basin #19
Okay
4.34 Disturbed Area (Acres)
12.18 Peak Flow from 25-year Storm (cfs)
7812 Required Volume ft3
3959 Required Surface Area ft2
44.5 Suggested Width ft
89.0 Suggested Length ft
07/02/19 KCG
624.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 4.34acres
44 Trial Top Width at Spillway Invert ft
90 Trial Top Length at Spillway Invert ft
3 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
26 Bottom Width ft
72 Bottom Length ft
1872 Bottom Area ft2
8586 Actual Volume ft3 Okay
3960 Actual Surface Area ft2 Okay
12 Trial Weir Length ft
0.5 Trial Depth of Flow ft
12.7 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1.75 Orifice Size (1/4 inch increments)
1.5
3.12 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
90'
NTS
5'
Bottom = 621.50
Top = 626.00
Weir = 625.00
Water = 624.50
3
Skimmer Basin #20
Okay
2.85 Disturbed Area (Acres)
9.21 Peak Flow from 25-year Storm (cfs)
5130 Required Volume ft3
2992 Required Surface Area ft2
38.7 Suggested Width ft
77.4 Suggested Length ft
07/22/19 KCG
614 Water Surface Elev.
Q25= C I A= .35 x8.02 in/hr x 2.85 acres
40 Trial Top Width at Spillway Invert ft
75 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
28 Bottom Width ft
63 Bottom Length ft
1764 Bottom Area ft2
7074 Actual Volume ft3 Okay
3000 Actual Surface Area ft2 Okay
9 Trial Weir Length ft
0.5 Trial Depth of Flow ft
9.5 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
3.48 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
75'
NTS
5'
Bottom = 611.00
Top = 615.50
Weir = 614.50
Water = 614.00
2
Skimmer Basin #21
Okay
2.46 Disturbed Area (Acres)
6.91 Peak Flow from 25-year Storm (cfs)
4428 Required Volume ft3
2244 Required Surface Area ft2
33.5 Suggested Width ft
67.0 Suggested Length ft
07/02/19 KCG
615.5 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 2.46 acres
33 Trial Top Width at Spillway Invert ft
69 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
21 Bottom Width ft
57 Bottom Length ft
1197 Bottom Area ft2
5139 Actual Volume ft3 Okay
2277 Actual Surface Area ft2 Okay
7 Trial Weir Length ft
0.5 Trial Depth of Flow ft
7.4 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
3.00 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
69'
NTS
5'
Bottom = 612.50
Top = 617.00
Weir = 616.00
Water = 615.50
2
Skimmer Basin #22
Okay
1.70 Disturbed Area (Acres)
4.77 Peak Flow from 25-year Storm (cfs)
3056.4 Required Volume ft3
1549 Required Surface Area ft2
27.8 Suggested Width ft
55.7 Suggested Length ft
07/22/19 KCG
606.75 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 1.70 acres
28 Trial Top Width at Spillway Invert ft
56 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
16 Bottom Width ft
44 Bottom Length ft
704 Bottom Area ft2
3336 Actual Volume ft3 Okay
1568 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
0.5 Trial Depth of Flow ft
5.3 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1 Orifice Size (1/4 inch increments)
1.5
3.74 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
56'
NTS
5'
Bottom = 603.75
Top = 608.25
Weir = 607.25
Water = 606.75
2
Skimmer Basin #23
Okay
3.23 Disturbed Area (Acres)
17.26 Peak Flow from 25-year Storm (cfs)
5814 Required Volume ft3
5610 Required Surface Area ft2
53.0 Suggested Width ft
105.9 Suggested Length ft
07/22/19 KCG
605 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 3.23 acres
54 Trial Top Width at Spillway Invert ft
104 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
42 Bottom Width ft
92 Bottom Length ft
3864 Bottom Area ft2
14148 Actual Volume ft3 Okay
5616 Actual Surface Area ft2 Okay
17 Trial Weir Length ft
0.5 Trial Depth of Flow ft
18.0 Spillway Capacity cfs Okay
1.5 Skimmer Size (inches)
Skimmer Size
0.125 Head on Skimmer (feet)
(Inches)
1.5 Orifice Size (1/4 inch increments)
1.5
3.16 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
104'
NTS
5'
Bottom = 602.00
Top = 606.50
Weir = 605.50
Water = 605.00
2
Skimmer Basin #24
Okay
6.65 Disturbed Area (Acres)
18.67 Peak Flow from 25-year Storm (cfs)
11970 Required Volume ft3
6067 Required Surface Area ft2
55.1 Suggested Width ft
110.2 Suggested Length ft
07/02/19 KCG
624 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 6.65 acres
50 Trial Top Width at Spillway Invert ft
122 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
38 Bottom Width ft
110 Bottom Length ft
4180 Bottom Area ft2
15348 Actual Volume ft3 Okay
6100 Actual Surface Area ft2 Okay
18 Trial Weir Length ft
0.5 Trial Depth of Flow ft
19.1 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.75 Orifice Size (1/4 inch increments)
1.5
3.38 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
122'
NTS
5'
Bottom = 620.00
Top = 625.50
Weir = 624.50
Water = 624.00
2
Skimmer Basin #25
Okay
1.6 Disturbed Area (Acres)
4.49 Peak Flow from 25-year Storm (cfs)
2880 Required Volume ft3
1460 Required Surface Area ft2
27.0 Suggested Width ft
54.0 Suggested Length ft
07/02/19 KCG
633.3 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 1.60 acres
25 Trial Top Width at Spillway Invert ft
59 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
13 Bottom Width ft
47 Bottom Length ft
611 Bottom Area ft2
3057 Actual Volume ft3 Okay
1475 Actual Surface Area ft2 Okay
5 Trial Weir Length ft
0.5 Trial Depth of Flow ft
5.3 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
Skimmer Size
0.167 Head on Skimmer (feet)
(Inches)
1 Orifice Size (1/4 inch increments)
1.5
3.05 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
59'
NTS
5'
Bottom = 630.30
Top = 634.80
Weir = 633.80
Water = 633.30
2
Skimmer Basin #26
Okay
6.79 Disturbed Area (Acres)
19.06 Peak Flow from 25-year Storm (cfs)
12222 Required Volume ft3
6195 Required Surface Area ft2
55.7 Suggested Width ft
111.3 Suggested Length ft
07/02/19 kcg
617 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 6.79 acres
53 Trial Top Width at Spillway Invert ft
117 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
41 Bottom Width ft
105 Bottom Length ft
4305 Bottom Area ft2
15687 Actual Volume ft3 Okay
6201 Actual Surface Area ft2 Okay
18 Trial Weir Length ft
0.5 Trial Depth of Flow ft
19.1 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.75 Orifice Size (1/4 inch increments)
1.5
3.46 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
117'
NTS
5'
Bottom = 614.00
Top = 618.50
Weir = 617.50
Water = 617.00
2
Skimmer Basin #27
Okay
3.33 Disturbed Area (Acres)
9.35 Peak Flow from 25-year Storm (cfs)
5994 Required Volume ft3
3038 Required Surface Area ft2
39.0 Suggested Width ft
77.9 Suggested Length ft
07/23/19 kcg
619.2 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 3.33 acres
34 Trial Top Width at Spillway Invert ft
90 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
22 Bottom Width ft
78 Bottom Length ft
1716 Bottom Area ft2
7092 Actual Volume ft3 Okay
3060 Actual Surface Area ft2 Okay
8 Trial Weir Length ft
1 Trial Depth of Flow ft
24.0 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
3.32 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
90'
NTS
5'
Bottom = 616.20
Top = 620.20
Weir = 619.20
Water = 619.20
2
Skimmer Basin #28
Okay
0.73 Disturbed Area (Acres)
2.05 Peak Flow from 25-year Storm (cfs)
1314 Required Volume ft3
666 Required Surface Area ft2
18.2 Suggested Width ft
36.5 Suggested Length ft
07/22/19 kcg
586 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 0.73 acres
20 Trial Top Width at Spillway Invert ft
38 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3 Trial Depth ft (2 to 3.5 feet above grade)
8 Bottom Width ft
26 Bottom Length ft
208 Bottom Area ft2
1380 Actual Volume ft3 Okay
760 Actual Surface Area ft2 Okay
4 Trial Weir Length ft
0.5 Trial Depth of Flow ft
4.2 Spillway Capacity cfs Okay
3 Skimmer Size (inches)
Skimmer Size
0.25 Head on Skimmer (feet)
(Inches)
1.25 Orifice Size (1/4 inch increments)
1.5
0.73 Dewatering Time (days)
2
Suggest about 3 days
2.5
3
4
5
6
8
38'
NTS
5'
Bottom = 583.00
Top = 587.50
Weir = 586.50
Water = 586.00
2
Skimmer Basin #29
Okay
0.73 Disturbed Area (Acres)
2.05 Peak Flow from 10-year Storm (cfs)
1314 Required Volume ft3
666 Required Surface Area ft2
18.2 Suggested Width ft
36.5 Suggested Length ft
07/22/19 KCG
583 Water Surface Elev.
Q25= C I A= .35 x 8.02 in/hr x 0.73 acres
20 Trial Top Width at Spillway Invert ft
35 Trial Top Length at Spillway Invert ft
2 Trial Side Slope Ratio Z:1
3.5 Trial Depth ft (2 to 3.5 feet above grade)
6 Bottom Width ft
21 Bottom Length ft
126 Bottom Area ft2
1331 Actual Volume ft3 Okay
700 Actual Surface Area ft2 Okay
4 Trial Weir Length ft
0.5 Trial Depth of Flow ft
4.2 Spillway Capacity cfs
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1.5 Orifice Size (1/4 inch increments)
0.62 Dewatering Time (days)
Suggest about 3 days
20'
NTS
2
35'
Okay
Skimmer Size
(Inches)
2
5' Tod = 584.50
------------------------ -------------------------
Weir = 583.50
Water - 583.00
------------------------------------------------------ - - - - - - -
2
Bottom = 579.50 1