Plans 14 to 36.pdf
PDF 21 MB Posted
- Attached to
- TSB/Bid Ops
- Solicitation number
- Noah & Wilcox E. AML Project Bid No. IA-113-363
- Issued by
- Mahaska County, Lake Park City, Iowa
About this file
This document comprises detailed construction plans and specifications for an Abandoned Mine Land (AML) reclamation project in Noah and Wilcox East, Iowa, prepared by the Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality, in partnership with Shive-Hattery engineering firm. The project encompasses comprehensive site reclamation involving mass grading, drainage infrastructure installation, wetland creation, and permanent vegetation establishment across 106.5 acres of disturbed mine spoil material. The work includes installation of 34 drainage pipes ranging from 8 inches to 36 inches in diameter, 34 riser intake structures, three drainage channels, multiple terraces and ridges, four constructed wetlands with water control structures, and approximately 103.4 acres of native and wetland fringe seeding. The project timeline extends from October 2026 through December 2027, with design completion dated August 17, 2026.
The project addresses critical water quality and public safety issues resulting from past coal mining activities, specifically acid mine drainage characterized by low pH and elevated dissolved iron concentrations. Construction activities include lime treatment to neutralize mine spoil surfaces, installation of erosion control measures such as silt fencing and filter socks, placement of riprap and rock riffles for velocity dissipation, and implementation of comprehensive Storm Water Pollution Prevention Plan (SWPPP) protocols. Sediment storage capacity of 513,000 cubic feet across four wetland basins provides approximately 7,500 cubic feet per disturbed acre. The reclaimed site will serve wildlife habitat and recreational use purposes, with permanent stabilization achieved through rough disking, mulching application at 2 tons per acre, and establishment of warm and cool season grass species providing minimum 70 percent vegetative cover.
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Other files
| File | Type | Posted |
|---|---|---|
| Supplemental Const Specs.pdf | ||
| Plans 1 to 13.pdf | ||
| General Requirements.pdf | ||
| Appendix.pdf | ||
| Construction Specifications.pdf |
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0.00.0X
7.1X
.0
X
3.7X
.1
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.1
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.1
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.9
X
.9
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.3
X
7.4X
2.7X
3.3X
0.5X
6.2X
.9
X
1.6X
5.8X
3.6X
1.1X
6.9X
.3
X
.1
X
.6
X
.7
X
.8
X
.9
X
.8
X
.4
X
.2
X
.6
X
8.7X
.0
X
2.2X
1.5X
.2
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.7
X
.2
X
.8
X
.5
X
.3
X
0.1X
.3
X
4.8X
.7
X
0.8X
8.9X
.8
X
.4
X
2.7X
.1
X
.9
X
.0
X
.2
X
.0
X
.8
X
9.0X
.8
X
.2
X
5.8X
.5
X
.9
X
.1
X
.3
X
.4
X
2.4X
3.2X
5.4X
.8
X
.7
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.9
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1.4X
.9
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.5
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4.2X
0.8X
.5
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.0
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.1
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0.00.0X
5.2X
2.8X
0.6X
0.9X
.8
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MATCHLINE
16 16 17 17
NORTH N
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L A
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X
X X
X X
X X
X X X
X X X X X X X X X X X X X X X
X X
X X
X X
X X
X
CENTRAL CHANNEL
SOUTHEAST
CHANNEL #2
SOUTHEAST
CHANNEL #1
R30
R26
R28
R23
R25
R27
R24
R29
R22
R10
R34
R11
R33
R12
R14
R16
R18
R13
R15
R17
R19
R2
R4
R8
R9
R32
R21
R20
R31
R3
R5
R7
R6
R1 P2
P1
P6
P9
P13
P15 P17
P21
P33B
P16
P14
P7
P31
P32B
P4 P3
P18
P1
P1
P8 B
P11
P10
P3 0B
P29
P26 P25
P28 P27
P23B
P34
P8 A
P22
P24
P5
P20
P32A
P23A
P30A
P33A
P33D P33C
NORTH
N O
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AG
E
PL
AN
PIPES
NO. LENGTH (LF) MATERIAL
DIAMETER
(IN) UPSTREAM INVERT (FT) DOWNSTREAM INVERT (FT) SLOPE NOTES
P1 51 PPHP 12 744.00 742.00 3.90%
P2 280 PPHP 12 793.00 744.00 17.77%
P3 79 PPHP 12 758.00 755.30 3.42%
P4 237 PPHP 12 793.00 758.00 14.92%
P5 82 HDPE 8 758.00 753.50 5.50% DL
P6 54 HDPE 8 749.00 748.00 1.85% DL
P7 98 PPHP 12 752.00 750.00 2.05%
P8A 216 PPHP 12 768.00 752.00 7.43%
P8B 212 PPHP 12 792.00 768.00 11.42%
P9 233 PPHP 12 788.00 766.25 9.37%
P10 63 HDPE 8 819.00 818.00 1.60% DL
P11 82 HDPE 8 813.00 811.00 2.44% DL
P12 100 HDPE 8 812.00 805.70 6.34% DL
P13 79 HDPE 8 806.00 804.20 2.28% DL
P14 127 HDPE 8 812.00 801.10 8.65% DL
P15 81 HDPE 8 801.00 800.00 1.23% DL
P16 129 PPHP 12 812.00 798.30 10.71%
P17 81 HDPE 8 800.00 797.00 3.71% DL
P18 139 PPHP 12 812.00 796.30 11.38%
P19 91 HDPE 8 800.00 793.20 7.45% DL
P20 87 HDPE 8 772.00 766.00 6.87% DL
P21 67 HDPE 8 774.00 773.00 1.49% DL
P22 90 PPHP 12 822.00 819.25 3.07%
P23A 42 PPHP 12 823.00 822.00 2.36%
P23B 191 PPHP 12 838.00 823.00 7.88%
P24 129 PPHP 12 827.00 819.25 6.01%
P25 105 PPHP 12 833.00 830.25 2.63%
P26 204 PPHP 12 840.00 833.00 3.43%
P27 88 PPHP 12 833.00 831.70 1.48%
P28 161 PPHP 12 840.00 833.00 4.36%
P29 84 PPHP 12 824.00 822.25 2.09%
P30A 49 PPHP 12 826.00 824.00 4.10%
P30B 145 PPHP 12 842.00 826.00 11.07%
P31 132 PPHP 12 762.00 744.00 13.76% ASC
P32A 92 PPHP 36 772.40 765.20 7.89%
P32B 111 PPHP 36 786.00 772.40 12.35% ASC
P33A 229 C900 PVC 24 807.20 790.25 7.42%
P33B 94 C900 PVC 24 810.00 807.20 2.99% ASC
P33C 5 PPHP 12 810.00 810.00 0.00%
P33D 55 PPHP 12 810.00 810.00 0.00%
P34 84 PPHP 12 818.00 817.00 1.20% ASC
RISER INTAKES
NO. SIZE (IN) HEIGHT (FT) TYPE RIM ELEVATION (FT) TERRACE FLOWLINE ELEVATION (FT) INVERT ELEVATION OUT (FT) NOTES
R1 12 3 MR 751.00 748.00 744.00
R2 10 3 MR 800.00 797.00 793.00
R3 12 3 MR 765.00 762.00 758.00
R4 10 3 MR 800.00 797.00 793.00
R5 10 3 MR 765.00 762.00 758.00
R6 10 3 MR 756.00 753.00 749.00
R7 12 3 MR 759.00 756.00 752.00
R8 10 3 MR 799.00 796.00 792.00
R9 10 3 MR 795.00 792.00 788.00
R10 10 3 MR 826.00 823.00 819.00
R11 10 3 MR 820.00 817.00 813.00
R12 10 3 MR 819.00 816.00 812.00
R13 10 3 MR 813.00 810.00 806.00
R14 10 3 MR 819.00 816.00 812.00
R15 10 3 MR 808.00 805.00 801.00
R16 10 3 MR 819.00 816.00 812.00
R17 10 3 MR 807.00 804.00 800.00
R18 10 3 MR 819.00 816.00 812.00
R19 10 3 MR 807.00 804.00 800.00
R20 12 3 MR 779.00 776.00 772.00
R21 10 3 MR 781.00 778.00 774.00
R22 12 4 MR 830.00 826.00 822.00
R23 10 4 MR 846.00 842.00 838.00
R24 10 4 MR 835.00 831.00 827.00
R25 12 4 MR 841.00 837.00 833.00
R26 10 4 MR 848.00 844.00 840.00
R27 12 4 MR 841.00 837.00 833.00
R28 10 4 MR 848.00 844.00 840.00
R29 12 4 MR 832.00 828.00 824.00
R30 10 4 MR 850.00 846.00 842.00
R31 48 - CR 766.00 - 762.00
R32 48 - CR 790.00 - 786.00
R33 48 - CR 819.00 - 810.00 MODIFIED SW-403
R34 48 - CR 822.00 - 818.00
NOTES:
1. SEE DETAILS, PIPE PROFILES, AND GRADING PLANS FOR
ADDITIONAL INFORMATION.
2. PIPE LENGTHS FOR PIPES LISTED WITH "DL" IN THE
NOTES COLUMN INCLUDE A 20' OUTLET SECTION
3. NO PVC OUTLET SECTION REQUIRED FOR PPHP PIPES.
NOTE:
ASC = ANTI-SEEPAGE COLLAR - SEE DETAIL
DL = DAYLIGHT - SEE DETAIL
NOTE:
MR = METAL RISER - SEE DETAIL
PR = PLASTIC RISER - SEE DETAIL
CR = CONCRETE RISER WITH TRASH RACK - SEE DETAIL
CHANNEL
NAME
BOTTOM
WIDTH (FT) DEPTH (FT) SIDE
SLOPES
CENTRAL
CHANNEL 6 1 4:1
SOUTHEAST
CHANNEL #1 4 1 4:1
SOUTHEAST
CHANNEL #2 4 1 4:1
AM
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P R
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BE
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A R
TM
E N
T O F
A G R I C U L T UR E
L A
ND
S
TEWARDSHIP
TOTAL PIPES
TYPE LENGTH (LF) # OF OUTLETS
8" HDPE 754 -
8" PVC (20' OUTLET SECTIONS) 240 12
12" PPHP 3383 -
36" PPHP 224 -
24" C900 PVC 323 -
TOTAL RISER
TYPE QUANTITY
10" CMP (3' TALL) 18
12" CMP (3' TALL) 3
10" CMP (4' TALL) 5
12" CMP (4' TALL) 4
48" CONCRETE RISER 3
MODIFIED 48" X 48" CONCRETE RISER 1
0+00.00 1+00.00 2+00.00 3+00.00 4+00.00
R2 (10" CMP RISER (3' TALL))
FL = 797.00
IE = 793.00 P2
P2 280 LF
12" PPHP @ 17.77%
R1 (12" CMP RISER (3' TALL))
FL = 748.00
IE = 744.00 P2
IE = 744.00 P1
P1 51 LF12" PPHP @ 3.90%
0+00.00 1+00.00 2+00.00 3+00.00 3+50.00
R4 (10" CMP RISER (3' TALL))
FL = 797.00
IE = 793.00 P4
P4 237 LF
12" PPHP @ 14.92%
P3 79 LF12" PPHP @ 3.42%
R3 (12" CMP RISER (3' TALL))
FL = 762.00
IE = 758.00 P4
IE = 758.00 P3
0+00.00 1+00.00
R5 (10" CMP RISER (3' TALL))
FL = 762.00
IE = 758.00 P5
P5 82 LF8" HDPE @ 5.50%
0+00.00 1+00.00
R6 (10" CMP RISER (3' TALL))
FL = 753.00
IE = 749.00 P6
P6 54 LF8" HDPE @ 1.85%
0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 5+00.00 6+00.00
R8 (10" CMP RISER (3' TALL))
FL = 796.00
IE = 792.00 P8B
P8B 212 LF
12" PPHP @ 11.42%
P8A 216 LF
12" PPHP @ 7.43%
R7 (12" CMP RISER (3' TALL))
FL = 756.00
IE = 752.00 P8A
IE = 752.00 P7
P7 98 LF12" PPHP @ 2.05%
0+00.00 1+00.00 2+00.00 3+00.00 3+50.00
R9 (10" CMP RISER (3' TALL))
FL = 792.00
IE = 788.00 P9
P9 233 LF
12" PPHP @ 9.37%
0+00.00 1+00.00
R10 (10" CMP RISER (3' TALL))
FL = 823.00
IE = 819.00 P10
P10 63 LF
8" HDPE @ 1.60%
N O
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PE
P R
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S
P1-2 PROFILE
VERTICAL SCALE:
HORIZONTAL SCALE:
HDPE PIPE COVER INFORMATION
SIZE (IN) MIN (FT) MAX (FT)
8" 1 11
10" 1 11
PPHP PIPE COVER INFORMATION
SIZE (IN) MIN (FT) MAX (FT)
12" 1 16
36" 1 16
NOTES:
1. MINIMUM PIPE SLOPE = 1.0%
2. WHERE PIPES ARE SHOWN TO OUTLET BELOW GRADE, CREATE 4' WIDE SWALE
FROM PIPE OUTLET TO FLOWLINE OF NEAREST CHANNEL OR NORMAL WATER
LEVEL OF NEAREST WETLAND.
3. IF PIPE IS PROJECTING BEYOND PROPOSED SLOPE, PROVIDE A 2-FOOT COVER
BERM OVER PIPE.
AM
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S- H
P R
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C T
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BE
R
IOWA D
EP
A R
TM
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T O F
A G R I C U L T UR E
L A
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S
TEWARDSHIP
P3-4 PROFILE P6 PROFILEP5 PROFILE
P7-8 PROFILE P9 PROFILE P10 PROFILE
C900 PIPE COVER INFORMATION
SIZE (IN) MIN (FT) MAX (FT)
24" 2 23
0+00.00 1+00.00 2+00.00
R12 (10" CMP RISER (3' TALL))
FL = 816.00
IE = 812.00 P12
P12 100 LF8" HDPE @ 6.34%
0+00.00 1+00.00 1+50.00
R13 (10" CMP RISER (3' TALL))
FL = 810.00
IE = 806.00 P13
P13 79 LF8" HDPE @ 2.28%
0+00.00 1+00.00 2+00.00
R14 (10" CMP RISER (3' TALL))
FL = 816.00
IE = 812.00 P14
P14 127 LF
8" HDPE @ 8.65%
0+00.00 1+00.00 1+50.00
R15 (10" CMP RISER (3' TALL))
FL = 805.00
IE = 801.00 P15
P15 81 LF
8" HDPE @ 1.23%
0+00.00 1+00.00
R11 (10" CMP RISER (3' TALL))
FL = 817.00
IE = 813.00 P11
P11 82 LF8" HDPE @ 2.44%
0+00.00 1+00.00 2+00.00
R16 (10" CMP RISER (3' TALL))
FL = 816.00
IE = 812.00 P16
P16 129 LF
12" PPHP @ 10.71%
0+00.00 1+00.00 2+00.00
R18 (10" CMP RISER (3' TALL))
FL = 816.00
IE = 812.00 P18
P18 139 LF
12" PPHP @ 11.38%
0+00.00 1+00.00 1+50.00
R19 (10" CMP RISER (3' TALL))
FL = 804.00
IE = 800.00 P19
P19 91 LF
8" HDPE @ 7.45%
0+00.00 1+00.00 1+50.00
R20 (10" CMP RISER (3' TALL))
FL = 776.00
IE = 772.00 P20
P20 87 LF
8" HDPE @ 6.87%
0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 4+50.00
R23 (10" CMP RISER (4' TALL))
FL = 842.00
IE = 838.00 P23B
P22 90 LF12" PPHP @ 3.07%
R22 (12" CMP RISER (4' TALL))
FL = 826.00
IE = 822.00 P23A
IE = 822.00 P22
P23B 191 LF
12" PPHP @ 7.88%
P23A 42 LF
12" PPHP @ 2.36%
0+00.00 1+00.00 2+00.00 3+00.00 4+00.00
R26 (10" CMP RISER (4' TALL))
FL = 844.00
IE = 840.00 P26
P26 204 LF12" PPHP @ 3.43%
R25 (12" CMP RISER (4' TALL))
FL = 837.00
IE = 833.00 P26
IE = 833.00 P25
P25 105 LF12" PPHP @ 2.63%
0+00.00 1+00.00 2+00.00
P24 129 LF
12" PPHP @ 6.01%
R24 (10" CMP RISER (4' TALL))
FL = 831.00
IE = 827.00 P24
0+00.00 1+00.00 1+50.00
R17 (10" CMP RISER (3' TALL))
FL = 804.00
IE = 800.00 P17
P17 81 LF8" HDPE @ 3.71%
0+00.00 1+00.00
R21 (10" CMP RISER (3' TALL))
FL = 778.00
IE = 774.00 P21
P21 67 LF
8" HDPE @ 1.49%
N O
AH
A
N D
W
IL
C O
X
EA
ST
AJ
H
20 36
G H
K
LT
M
-1 7-
PI
PE
P R
O
FI
LE
S
VERTICAL SCALE:
HORIZONTAL SCALE:
AM
L
R
EC
LA
M
AT
IO
N P
R O
JE
C
T
IO
W A
D
EP
AR
TM
EN
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AG
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U
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D
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W
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F
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C
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SE
R
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AN
D
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Q
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H O
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BU
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M
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IN
ES
, I
A
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1-
SHEET
OF
D
ES
IG
N
B Y:
D R
AW
N
B Y:
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KD
. B
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IS
SU
ED
R
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IS
ED
Ill in oi s
Fi rm
N um be r:
-0
W es to w n Pa rk w ay , S ui te
W es t D es M oi ne s, Io w a
5.
3.
f ax
: 5
.2
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Io w a
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M is so ur i
S- H
P R
O
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C T
N U
M
BE
R
IOWA D
EP
A R
TM
E N
T O F
A G R I C U L T UR E
L A
ND
S
TEWARDSHIP
P11 PROFILE P12 PROFILE P13 PROFILE P14 PROFILE
P17 PROFILE P18 PROFILE P19 PROFILE
P22-23 PROFILE
P15 PROFILE
P24 PROFILE P25-26 PROFILE
P16 PROFILE
P20 PROFILE P21 PROFILE
0+00.00 1+00.00 2+00.00 3+00.00 3+50.00
R30 (10" CMP RISER (4' TALL))
FL = 846.00
IE = 842.00 P30B
P30B 145 LF
12" PPHP @ 11.07%
R29 (12" CMP RISER (4' TALL))
FL = 828.00
IE = 824.00 P30A
IE = 824.00 P29
P29 84 LF12" PPHP @ 2.09%P30A 49 LF
12" PPHP @ 4.10%
0+00.00 1+00.00 2+00.00
R31 (48" CONCRETE RISER)
RIM = 766.00
IE = 762.00 P31
P31 132 LF
12" PPHP @ 13.76%
INSTALL ONE 5' X 5'
ANTI-SEEP COLLAR
MAX SPACING = 25 FEET
- SEE DETAIL
PROPOSED WETLAND
NWL = 766.00
WETLAND TOP OF DAM
ELEV = 770.00
TOP WIDTH = 10 FEET
0+00.00 1+00.00 2+00.00 2+50.00
R32 (48" CONCRETE RISER)
RIM = 790.34
IE = 786.00 P32B
INSTALL FOUR 8' X 8'
ANTI-SEEP COLLAR
MAX SPACING = 25 FEET
- SEE DETAIL
PROPOSED WETLAND
NWL = 790.00
WETLAND TOP OF DAM
ELEV = 796.00
TOP WIDTH = 10 FEET
P32A 92 LF
36" PPHP @ 7.89%
P32B 111 LF
36" PPHP @ 12.35%
THRUST BLOCK
- SEE DETAIL
MANUFACTURED
2.5° BEND
20.00'
0+00.00 1+00.00 1+50.00
R34 (48" CONCRETE RISER)
RIM = 822.00
IE = 818.00 P34
P34 84 LF
12" PPHP @ 1.20%
INSTALL ONE 5' X 5'
ANTI-SEEP COLLAR
MAX SPACING = 25 FEET
- SEE DETAIL
PROPOSED WETLAND
NWL = 822.00
WETLAND TOP OF DAM
ELEV = 826.00
TOP WIDTH = 10 FEET
0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 4+50.00
R33 (MODIFIED 48" X 48" CONCRETE RISER)
RIM = 819.00
IE = 810.00 P33C
IE = 810.00 P33B
P33B 94 LF
24" C900 PVC @ 2.99%
INSTALL FIVE 8' X 8'
ANTI-SEEP COLLAR
MAX SPACING = 25 FEET
- SEE DETAIL
PROPOSED WETLAND
NWL = 819.00
WETLAND TOP OF DAM
ELEV = 827.00
TOP WIDTH = 40 FEET
P33A 229 LF
24" C900 PVC @ 7.42%
THRUST BLOCK
- SEE DETAIL
MANUFACTURED
2.5° BEND
15.00'
MODIFIED SW-403
WITH STOPLOGS
- SEE DETAIL
P33D 55 LF
12" PPHP @ 0.00%
P33C 5 LF
12" PPHP @ 0.00%
WETLAND 12" PPHP
DRAWDOWN PIPE
IE = 810.00
0+00.00 1+00.00 2+00.00 3+00.00 3+50.00
R28 (10" CMP RISER (4' TALL))
FL = 844.00
IE = 840.00 P28
P28 161 LF12" PPHP @ 4.36%
R27 (12" CMP RISER (4' TALL))
FL = 837.00
IE = 833.00 P28
IE = 833.00 P27
P27 88 LF
12" PPHP @ 1.48%
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HORIZONTAL SCALE:
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P34 PROFILE
P32 PROFILE
P33 PROFILE
P27-28 PROFILE P29-30 PROFILE
P31 PROFILE
1 SIGN DETAIL
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5 ROCK RIFFLE - PROFILE
4 ROCK RIFFLE - PLAN
VARIES2.00'
C R
O
SS
SE
C
TI
O
N
CLASS 'E' RIP RAP
BURY LAST 5' OF ROCK
6'' STONE FILTER
2.
0.6%
2 TYPICAL BENCHING DETAIL
5' MIN. INTO
EXISTING SLOPE
PROPOSED
GRADE
VARIES
EXISTING
EMBANKMENT
COMPACTED
BENCHED
BACKFILL (TYP)
EXISTING
GRADE
5' MAX
NOTES:
1. EXISTING SLOPES STEEPER THAN 5'
HORIZONTAL TO 1' VERTICAL SHALL BE
BENCHED PRIOR TO PLACING FILL.
2. BENCHING SHOWN IN DETAIL IS TYPICAL. FIELD
CONDITIONS MAY REQUIRE THAT ALTERNATE
VERTICAL AND HORIZONTAL DIMENSIONS FOR
BENCHES BE USED.
3. CONTACT THE ENGINEER PRIOR TO ANY
BENCHING ACTIVITY.
--- HARD HAT AREA ---
MIDDLE PANEL (1'-8" x 4') 0.080" ALUMINUM SUBSTRATE
TOP PANEL (4' x 4') 0.080" ALUMINUM SUBSTRATE
BOTTOM PANEL (1' x 4') 0.080" ALUMINUM SUBSTRATE
UNAUTHORIZED ENTRY PROHIBITED
NOAH & WILCOX EAST
ABANDONED COAL MINE
SPONSORED BY
FUNDED BY
GENERAL CONTRACTOR:
XYZ EARTHWORKS
CITY,STATE
ENGINEERING BY:
SHIVE HATTERY INC
WEST DES MOINES, IA
PARTNERSHIP SIGN
(BY OTHERS)
SIGNAGE NOTES:
1. DIVISION WILL FURNISH TOP AND BOTTOM SIGN PANELS. MIDDLE PANEL PROVIDED BY OTHERS. CONTRACTOR IS RESPONSIBLE FOR
PROVIDING POSTS, HARDWARE, AND INSTALLATION FOR ALL PANELS.
2. ALL EXPOSED WOOD SHALL BE SEALED WITH THOMPSON'S WATER SEAL OR EQUAL MEETING ASTM D-4446-08.
3. ALL STEEL HARDWARE PIECES SHALL BE GALVANIZED.
4. NYLON AND STEEL WASHERS SHALL BE USED AS SHOWN ON THE BOLT, WASHER, NUT FASTENER DETAIL ABOVE.
5. CLEAR UTILITIES WITH IOWA ONE-CALL (800) 292-8989 BEFORE EXCAVATING FOR POSTS.
6. SECURE APPROVAL OF DIVISION AND ENGINEER FOR SIGN LOCATION BEFORE INSTALLATION.
7. COSTS FOR POSTS, HARDWARE, WOOD SEALANT AND SIGN INSTALLATION SHALL BE INCIDENTAL TO MOBILIZATION.
8. CONTRACTOR SHALL INSTALL SIGN POSTS USING A PLYWOOD OR OTHER SUITABLE TEMPLATE TO MAINTAIN ACCURATE POST SPACING AND ALIGNMENT DURING BACKFILLING OF THE POST HOLES. TO AVOID BENDING OF THE SIGN PANELS, POSTS SHALL NOT BE INSTALLED
OR BACKFILLED WITH SIGN PANELS ATTACHED.
9. ONE (1) PROJECT SIGN IS REQUIRED, LOCATED AS SHOWN ON PLANS.
MIDDLE
PANEL
TOP
PANEL
BOTTOM PANEL
BOLT, WASHER, & NUT
FASTENER DETAIL
NOT TO SCALE
AND LAND STEWARDSHIP
IOWA DEPARTMENT OF AGRICULTURE
OFFICE OF SURFACE MINING RECLAMATION AND ENFORCEMENT
DIVISION OF SOIL CONSERVATION AND WATER QUALITY
GRANT NO. S25AF00167
** LETTER WIDTH = 75% OF THE LETTER HEIGHT
RECLAMATION SITE
THRU-BOLT DETAIL
NOT TO SCALE
NUT & WASHER ON BACK FACE
OF POST PREFERRED
1" MAX. COUNTERBORE DEPTH
ACCEPTABLE IF NECESSARY
SIGN PANEL FACE
NOMINAL
4" x 6"
TREATED POST
NOM. 6" DIMENSION
ORIENTED
PERPENDICULAR
TO PANEL FACE.
THRU-BOLT REQ'D. LAG
SCREWS SHALL NOT BE
ACCEPTABLE
HEAD, GALVANIZED 38" DIA. BOLT
GALVANIZED STEEL WASHER
NYLON WASHER AGAINST FACE
OF SIGN PANEL
GALVANIZED STEEL WASHER
BACK OF POST
NUT
16" HOLES LOCATED AS SHOWN,
PRE-PUNCHED BY SIGN FABRICATOR.
FASTEN SIGN TO POSTS WITH 3/8" DIA.
STEEL THRU-BOLT & NUT SET.
SEE BOLT, WASHER, & NUT FASTENER
DETAIL THIS SHEET (12 SETS REQ'D.
PROVIDED AND INSTALLED BY
CONTRACTOR).
BOTTOM PANEL REMOVED BY
CONTRACTOR AFTER PROJECT
COMPLETION. CONTRACTOR SHALL
RETURN BOTTOM PANEL UNDAMAGED
TO DIVISION PRIOR TO RELEASE OF
RETAINAGE.
4"x6"x14' PRESSURE-TREATED POST (TYP.)
2 REQ'D. POSTS SEALED WITH THOMPSON'S
WATER SEAL OR EQUAL. POSTS, SEALANT,
AND INSTALLATION PROVIDED BY
CONTRACTOR. SEE THRU-BOLT DETAIL
THIS SHEET.
EXISTING SOIL SURFACE
BACKFILL WITH CONCRETE (PREFERRED),
CLEAN STONE (ACCEPTABLE), OR
HAND-TAMPED EARTH IN SMALL LIFTS
(SUBJECT TO ENGINEER'S APPROVAL)
VERSION DATE: 03-27-2025
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6 ROCK RIFFLE - CROSS SECTION
2.0'
4'6' 6'
5' MIN 5' MIN
2.
5'
CHANNEL
FLOW LINE
6'' STONE FILTER
CLASS 'E' RIP RAP
4:1 MAX
PROPOSED WING DIKE
(TYP) EACH SIDE4:1 MAX
PROPOSED WING DIKE (TYP)
ROCK LETDOWN
TOTAL
LENGTH
RIPRAP
TONNAGE
FILTER STONE
TONNAGE
43' 85 20
75' 140 35
PROFILE
TOE OF CHANNEL
TOP OF CHANNEL BANK
CLASS 'E' RIP RAP
BLEND EDGES OF WING DIKE
INTO EXISTING LANDSCAPE
(TYP)
6'
4:1 MAX SLOPES (TYP)
TOP WING DIKE 12" - 24"
HIGHER THAN
ROCK KEYS(TYP)
WING DIKE (TYP)
- NOT TO SCALE
WING DIKE (TYP)
- NOT TO SCALE
3 TYPICAL WETLAND EDGE
NORMAL WATER LEVEL 20 (MAX)
VARIES
3"
5'-0" MINIMUM 5'-0" MINIMUM
20 (MAX)
3"
VARIES
WETLAND UNDERCUT EXCAVATION.
INCORPORATE LIME, FERTILIZER,
AND MULCH TO REPLACED
UNDERCUT MATERIAL.
INCORPORATE LIME, FERTILIZER,
AND MULCH AT LEAST 9" BELOW
EXPOSED UNDERCUT
9"
30"
48" 9"
30"
3" (TYP.)
42" MIN.
48"
20"
12"
THICKNESS FOR
SIGN & POST
48"
5.5"
0.
5'
4'
6' 6'
5' M
IN
. VARIES
2.00'
5' M
IN
9" M
IN
2 TERRACE - 4' HEIGHT
LONGITUDINAL SLOPE VARIES
FINISH GRADE
WORK IS COMPLETE (SEE SPECIFICATIONS)
PROVIDE SUB-GRADE TREATMENT AFTER TERRACE
VARIES
4' -0
2'-0"
5 PIPE OUTLET PROTECTION
6"
24"
18''
VARIES
D
1' M
IN
IM
U M
12" PPHP
5'
5'
" P
PH
P
SECTION A
COMPACT BACKFILL AROUND
COLLAR AND PIPE WITH IMPERVIOUS
BACKFILL
PLACE COLLAR A MINIMUM
OF 3.0' FROM PIPE JOINTS
SECURE ANTI-SEEP COLLAR
WITH PROVIDED STAINLESS
STEEL BOLTS AND BANDS
PROTECT COLLAR DURING
BACKFILL ACTIVITIES
6 12" ANTI-SEEPAGE COLLAR
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L A
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24" C900 PVC
OR 36" PPHP
8'
8'
" C
PV
C
O R
6"
P
PH
P
SECTION A
COMPACT BACKFILL AROUND
COLLAR AND PIPE WITH IMPERVIOUS
BACKFILL
PLACE COLLAR A MINIMUM
OF 3.0' FROM PIPE JOINTS
SECURE ANTI-SEEP COLLAR
WITH PROVIDED STAINLESS
STEEL BOLTS AND BANDS
PROTECT COLLAR DURING
BACKFILL ACTIVITIES
7 24" & 36" ANTI-SEEPAGE COLLAR
4 TERRACE - 5' HEIGHT
LONGITUDINAL SLOPE VARIES
FINISH GRADE
WORK IS COMPLETE (SEE SPECIFICATIONS)
PROVIDE SUB-GRADE TREATMENT AFTER TERRACE
VARIES
5' -0
2'-0"
VARIES
1 CMP RISER (3' TALL) - 4' TERRACE
W
MAX.
3.
5'
M
IN
W
H
ER
E G
R
AD
ES
P
ER
M
IT
D D
D 4" 8"
W MAX.
24" 24"
10" 24" 12" 36" 18" 36"
3.
5'
M
IN
3.
0'
M
IN
. O R
' B
EL
O
W
TO
P O
F
TE
R R
AC
E
M
AX
24"
NOTES:
1. CMP RISER PIPE SHALL BE ALUMINUZED AND MEET ASTM A742 & A929 STANDARDS.
2. PERFORATED MID-SECTION BELOW GROUND IS RECOMMENDED: TAPE OVER ALL PRE-FABRICATED
HOLES WITH TILE TAPE EXCEPT TOP 12" IMMEDIATELY BELOW GRADE.
3. WRAP 8 MIL POLYETHYLENE ENCASEMENT ON ALL BURIED ALUMINIZED CMP, EXCLUDING THE TOP 12 INCHES. SECURELY TAPE ALL LAPS AND JOINTS. OVERLAP SEAMS A MINIMUM 12 INCHES AND TAPE
SECURELY WITH TILE TAPE.
4. IF APPROVED BY THE ENGINEER, AGRI-DRAIN (OR EQUAL) PIPE STRAPS MAY BE USED IN LIEU OF CONCRETE
TO RESTRAIN ALL CONNECTIONS OF THE RISER AND TEE ASSEMBLY.
5. IF PIPE STRAPS ARE USED ALL METAL "D" RINGS SHALL BE COVERED WITH TILING TAPE.
6. FASTEN BAR GUARD TO RISER WITH THREE (3) SELF-TAPPING SCREWS OR THREE (3) STAINLESS STEEL ZIP
TIES EQUALLY SPACED ABOUT RISER.
3 CMP RISER (4' TALL) - 5' TERRACE
W
MAX.
3.
5'
M
IN
W
H
ER
E G
R
AD
ES
P
ER
M
IT
D D
D 4" 8"
W MAX.
24" 24"
10" 24" 12" 36" 18" 36"
3.
5'
M
IN
3.
0'
M
IN
. O R
' B
EL
O
W
TO
P O
F
TE
R R
AC
E
M
AX
24"
NOTES:
1. CMP RISER PIPE SHALL BE ALUMINUZED AND MEET ASTM A742 & A929 STANDARDS.
2. THERE SHALL BE NO PERFORATIONS ON THE FIRST FOOT OF RISER ABOVE PROPOSED GROUND.
3. WRAP 8 MIL POLYETHYLENE ENCASEMENT ON ALL BURIED ALUMINIZED CMP, EXCLUDING THE TOP 12 INCHES. SECURELY TAPE ALL LAPS AND JOINTS. OVERLAP SEAMS A MINIMUM 12 INCHES AND
TAPE SECURELY WITH TILE TAPE.
4. IF APPROVED BY THE ENGINEER, AGRI-DRAIN (OR EQUAL) PIPE STRAPS MAY BE USED IN LIEU OF CONCRETE
TO RESTRAIN ALL CONNECTIONS OF THE RISER AND TEE ASSEMBLY.
5. IF PIPE STRAPS ARE USED ALL METAL "D" RINGS SHALL BE COVERED WITH TILING TAPE.
6. FASTEN BAR GUARD TO RISER WITH THREE (3) SELF-TAPPING SCREWS OR THREE (3) STAINLESS STEEL ZIP
TIES EQUALLY SPACED ABOUT RISER.
" 12
NOTE:
A 20 LF PVC OUTLET SECTION IS REQUIRED ONLY FOR HDPE PIPE OUTLETS.
PPHP AND C900 PVC PIPE OUTLETS DO NOT REQUIRE THIS SECTION.
MATCH
INVERTS
SEAL CONNECTION WITH FERNCO COUPLER OR APPROVED
EQUAL AND INSTALL CONCRETE COLLAR OF 3,000 PSI MINIMUM
STRENGTH CONCRETE, MINIMUM 2D WIDE CENTERED ON
JOINT, MIN 12'' THICKNESS FOR FULL 2D WIDTH. THICKNESS
CAN TAPER DOWN BEYOND THE 2D WIDTH.
DUAL WALL
HDPE PIPE
LAST 20 LF TO BE PVC WITH
RODENT GUARD
CLASS 'E' RIP RAP
OVER 6" STONE FILTER
PROPOSED GRADE
4" HDPE MEMBRANE. SCEIB
DRAINAGE PRODUCTS ANTI-SEEP
COLLAR OR APPROVED EQUAL.
FASTEN MEMBRANE TO PIPE WITH
STAINLESS STEEL BOLTS AND BANDS.
4" HDPE MEMBRANE. SCEIB
DRAINAGE PRODUCTS ANTI-SEEP
COLLAR OR APPROVED EQUAL.
FASTEN MEMBRANE TO PIPE WITH
STAINLESS STEEL BOLTS AND BANDS.
PROPOSED GRADE
HAND-PLACED
MATERIAL, NO ROCKS.
TAMP IN LIFTS
NON-PERFORATED DUAL
WALL HDPE OR PPHP PIPE
SLOPE CONTINUOUSLY
TOWARD OUTLET, 2% MIN.
BACKFILL WITH
EXCAVATED
MATERIAL AND
COMPACT IN LIFTS
AGRI-DRAIN BAR GUARD (OR EQUAL)
10" DIAMETER MINIMUM
ALUMINIZED CMP INTAKE
STRAW WATTLE AROUND
PERIMETER
GRADE SHOWN ON
CROSS SECTIONS
PROPOSED GRADE
NON-PERFORATED DUAL WALL
HDPE OR PPHP OUTLET PIPE
(UNLESS OTHERWISE INDICATED)
CONCRETE JOINT
RESTRAINT (SEE NOTE #4)
INTAKE TEE - SIZE TO MATCH
DIAMETER OF OUTLET PIPE
INCOMING PIPE, OR
CAP WHERE NEEDED
CHANNEL ELEVATION AT
TERRACE LOW POINT
TERRACE FLOWLINE ELEVATION
INSTALL (3) 6.0' LONG POSTS
AROUND RISERS, TIE RISER
TO POST WITH NO. 9 WIRETOP 3 FEET SHALL BE PERFORATED WITH AT LEAST
40 1-INCH DIAMETER HOLES PROVIDING A MINIMUM
OF 30 OPEN SQUARE INCHES PER FOOT OF RISER.
SEE NOTE #2
FASTEN BAR GUARD TO RISER (SEE NOTE #6)
PROPOSED GRADE
HAND-PLACED
MATERIAL, NO ROCKS.
TAMP IN LIFTS
NON-PERFORATED DUAL
WALL HDPE OR PPHP PIPE
SLOPE CONTINUOUSLY
TOWARD OUTLET, 2% MIN.
BACKFILL WITH
EXCAVATED
MATERIAL AND
COMPACT IN LIFTS
AGRI-DRAIN BAR GUARD (OR EQUAL)
10" DIAMETER MINIMUM
ALUMINIZED CMP INTAKE
STRAW WATTLE AROUND
PERIMETER
GRADE SHOWN ON
CROSS SECTIONS
PROPOSED GRADE
NON-PERFORATED DUAL WALL
HDPE OR PPHP OUTLET PIPE
(UNLESS OTHERWISE INDICATED)
CONCRETE JOINT
RESTRAINT (SEE NOTE #4)
INTAKE TEE - SIZE TO MATCH
DIAMETER OF OUTLET PIPE
INCOMING PIPE, OR
CAP WHERE NEEDED
CHANNEL ELEVATION AT
TERRACE LOW POINT
TERRACE FLOWLINE ELEVATION
INSTALL (3) 6.0' LONG POSTS
AROUND RISERS, TIE RISER
TO POST WITH NO. 9 WIRE
TOP 4 FEET SHALL BE PERFORATED WITH AT LEAST
53 1-INCH DIAMETER HOLES PROVIDING A MINIMUM
OF 30 OPEN SQUARE INCHES PER FOOT OF RISER.
PROVIDE 8 MIL POLYETHYLENE ENCASEMENT
ON ALL BURIED ALUMINIZED CMP, EXCLUDING
THE TOP 12 INCHES. SECURELY TAPE ALL
LAPS AND JOINTS. SEE NOTE #3
SEE NOTE #2
FASTEN BAR GUARD TO RISER (SEE NOTE #6)
PROVIDE 8 MIL POLYETHYLENE ENCASEMENT
ON ALL BURIED ALUMINIZED CMP, EXCLUDING
THE TOP 12 INCHES. SECURELY TAPE ALL
LAPS AND JOINTS. SEE NOTE #3
IMMEDIATELY PRIOR TO SEEDING,
INSTALL 18" CMP AROUND OUTSIDE OF
RISER. BURY 18" CMP MIN. 2.5' AND
LEAVE 1.0' EXPOSED. BACKFILL SPACE
BETWEEN RISER AND 18" CMP WITH
HAND-COMPACTED SOIL.
AT TIME OF 18" CMP INSTALLATION, WRAP
BOTTOM 12" OF PERFORATIONS WITH TILE TAPE
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2 WOVEN WIRE AND 2-STRAND BARBED WIRE FIELD FENCE
XXXXXXXXXXXXXXXXXXXXX
X X X X X X X X X X X X X X X X X X X X X
XXXXXXXXXXXXXXXXXXXXX X X X X X X X X X X X X X X X X X X X X X
NOTES:
1. BARBED WIRE SHALL BE GALVANIZED STEEL WITH A 4-POINT PATTERN OF ROUND BARBS SPACED 5 INCHES ON CENTER
MEETING THE REQUIREMENTS OF IDOT SECTION 4154.04.
2. WOVEN WIRE SHALL BE 12.5 GAUGE WIRE AND 36" TALL, FENCE SHALL MEET THE REQUIREMENTS OF IDOT SECTION 4154.04.
3. POSTS SHALL BE WOOD PRESSURE TREATED FOR GROUND CONTACT MEETING THE REQUIREMENTS OF IDOT SECTION 4154.02.
M
IN
12' (MAX)
2" (M
IN
FR
O
M T
O P
WOODEN LINE POST (TYP.)
X X
X X X X X X X X X X X X X X X X X X X X X
X X
XXXXXXXXXXXXXXXXXXXXXX
WOVEN WIRE
16'
M
IN
M
IN
MINIMUM TWO HINGE ASSEMBLIES PLATE FOR SECURING GATE WITH CHAIN
1.5" ID, 20 GAUGE STEEL TUBING.
GREEN POWDER COAT FINISH.
MINIMUM ONE VERTICAL BRACE.MINIMUM 5 HORIZONTAL TUBES
NOTES:
1. GATE END BRACING SHALL SINGLE H BRACE
BE IN ACCORDANCE WITH NRCS PRACTICE
SPECIFICATION IA-382-PS AND SHALL BE
INSTALLED AT EACH SIDE OF THE GATE.
3 DOUBLE WIDE 16' TUBE GATE
16'
M
IN
M
IN
32'
4 CONSTRUCTION SITE ENTRANCE SIGNAGE PLAN
TRASH RACK TOP VIEW
NORMAL WATER LEVEL
48" Ø RCP
12"
DIAMETER PPHP
IE = VARIES
CAST IN PLACE
CONCRETE
INVERT
12" MIN
PRECAST CONCRETE STRUCTURE
(ONE SECTION)
INSTALL A FLEXIBLE WATER-TIGHT
SEAL AROUND PIPE PENETRATIONS,
A-LOK STM CONNECTOR OR
PRE-APPROVED EQUIVALENT
HAND COMPACT BACKFILL
AROUND RISER AND PIPE
LADDER IN ALL SECTIONS
STRUCTURAL HDPE TRASH RACK INCIDENTAL
TO STRUCTURE - STORMRAX (RS-48)
48" ROUND SERIES OR APPROVED EQUAL.
8' x 8' CONCRETE FOUNDATION WITH
#6 BARS @ 12" O.C. EACH WAY
3" CLEAR TO BOTTOM (TYP)
1 CONCRETE WATER CONTROL STRUCTURE WITH TRASH RACK
ELEV = VARIES
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L A
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N O
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2 BURIED GRADE CONTROL - TERRACE
SECTION A-A
VARIES
VARIES
TOP OF TERRACE
TERRACE FLOWLINE
COVER RIP-RAP WITH 10-12" OF SOIL.
APPLY SUBGRADE AMENDMENTS
AND PERMANENTLY SEED AREA.
6" STONE FILTER
24" THICK CLASS
'E' RIP-RAP
2'
18'
VOIDS IN RIP RAP TO BE CHOKED WITH
ONSITE SOILS DURING PLACEMENT.
PLACE RIP RAP AND SOILS IN LIFTS TO
ENSURE ALL VOIDS ARE FILLED
THROUGHOUT THE ENTIRE DEPTH.
BRING RIP RAP TO SURFACE
IN TERRACE FLOWLINE AND
CHOKE WITH ONSITE SOILS
24" THICK CLASS
'E' RIP-RAP
6" STONE FILTER
COVER RIP-RAP WITH 10-12" OF SOIL.
APPLY SUBGRADE AMENDMENTS
AND PERMANENTLY SEED AREA.A
A
A
A
1 DITCH CHECK
M
IN
6" STONE FILTER
6" STONE FILTER
CLASS 'E' RIP-RAP
CLASS 'E' RIP-RAP
DITCH CROSS-SECTION
SECTION A-A
6" MIN.
CREST
24" O R
AS
SPEC
IFIED
4'
EXISTING GRADE OR EARTHEN
WING DIKES AS NEEDED
KEY IN DITCH CHECK 2'
INTO EXISTING GRADE
2.00'
GRAVITY THRUST BLOCK
UNDISTURBED SOIL
CONCRETE
THRUST BLOCK.
NEWLY INSTALLED PIPE
(SIZE VARIES)
ALLOW CONCRETE TO CURE 5
DAYS PRIOR TO CONNECTING
TO RISER
NEWLY INSTALLED PIPE
(SIZE VARIES)
1' T
HI
CK
(M
IN
1'
TH
IC
K
(M
IN
SECTIONAL ELEVATION A-A
RISER DETAIL
NOTES:
1) PROVIDE STRUCTURE SHOP DRAWINGS FOR ENGINEERS REVIEW AND
APPROVAL BEFORE FABRICATION OF WATER CONTROL STRUCTURE.
2) WATER CONTROL STRUCTURE TO BE PRE FABRICATED REINFORCED
CONCRETE RISER STRUCTURE WITH WATERTIGHT SEALS AT SECTION
JOINTS AND PIPE PENETRATIONS.
3) STOP LOG CHANNEL IS TO BE ANCHORED TO THE WALLS AND FLOOR
PRIOR TO PLACING CONCRETE INVERT.
4) POUR CONCRETE INVERT AFTER STOP LOG CHANNEL IS INSTALLED.
CAST BOTTOM STOP LOG INTO PLACE WITH THREE 12" DIA "J BOLTS".
PLAN VIEW
A
Flow
A
8.
0'
Flow24
STOP LOG STORAGE STRUCTURE
Flow
Flow
TOP ELEV = 809.25
BOT. ELEV = 808.25
"3"
TRASH RACK WITH LOCKABLE FLAT
HINGE LID AND ANIT-VORTEX DEVICE
BY AFINTAS ADVANCED TECHNOLOGIES
OR APPROVED EQUIVALENT (BCTM4X4)
8.0'
8.0'
42" X 42" BOX R.C. STRUCTURE
RIM = 819.00
STAINLESS STEEL CHANNEL
FOR CHECK BOARDS
- SEE DETAIL
CAST IN PLACE
BOTTOM STOP
LOG MINIMUM 3''
IE = 810.00
IE = 810.00
48" X 48" R.C.
BOX STRUCTURE
DETAIL A4
12'' DIAMETER PPHP
DRAWDOWN PIPE
CONCRETE BASE
24'' DIAMETER C900
PVCC OUTLET PIPE
2'' PVC STOPLOGS
LOCKING BAR
2"X2" X14" ANGLE 36" LONG. INSTALL
12" BOLT W/ WELDED NUT FOR HINGE
AT ONE END. DRILL 12" HOLE FOR
PADLOCK AT OTHER END.
6"X12" EYEBOLT CAST
INTO SLAB FOR HINGE
6.5 LF 24" DIA DUAL WALL
HDPE BURIED FOR STOP
LOG STORAGE STRUCTURE
COMPACTED SUB-BASE,
8" THICK
INSTALL STOP LOGS
TO NWL (819.00)
24" DIA. COVER. AGRIDRAIN GR24P
GRATE AND COLLAR OR APPROVED
EQUAL.
NWL = 819.00
8"
BOX STRUCTURE TO BE
IOWA DOT SW-403 OR
APPROVED EQUIVALENT
3 MODIFIED SW-403 WATER CONTROL STRUCTURE AND APPURTENANCES
12" PPHP
24" C900 PVC
2.00''
4.
NOTE:
ALL PVC STOP-LOGS SHALL BE PROVIDED BY CONTRACTOR.
CONTRACTOR IS RESPONSIBLE FOR CUTTING STOP-LOGS AS
SHOWN. THE 0.75'' DIMENSION IS CRITICAL AND NEEDS TO BE
CENTERED IN THE STOP-LOG TO AVOID LEAKAGE. THE FINISHED
SURFACE SHALL BE SMOOTH TO PROVIDE A FLAT SURFACE FOR
THE STOP-LOG ABOVE IT. THE CONTRACTOR SHALL DELIVER 20
STOP-LOGS TO THE SITE. THE COST OF THE STOP-LOG WORK IS
INCIDENTAL TO THE OUTLET CONTROL STRUCTURE.
12''
.0
0'
2.25''
NOTE:
TWO (2) LIFTING HOOKS REQUIRED
6''3''1''3''
0.
NOTES:
1. CONTRACTOR TO DRILL 38" HOLES IN TOP OF STOP LOG CHANNELS AND
PROVIDE TWO (2) PADDLE LOCKS TO LOCK THROUGH CHANNELS TO
PREVENT LOGS FROM BEING LIFTED OUT WHEN LOCK IS IN PLACE.
2. CONTRACTOR SHALL SUBMIT SHOP DRAWINGS FROM FABRICATOR FOR
ENGINEER REVIEW.
STOP LOG CROSS SECTION
12'' DIAMETER ROD
1 1/4'' DIAMETER INSIDE
BEND. HOOK TO BE IN
LINE WITH HANDLE.
2.
0"
2.
5'
2.
5'
WATER CONTROL STRUCTURE
L 3 X 3 X 3 8
GALVANIZED (TYP)
PVC STOP LOG 1'' LESS THAN TIGHT FIT.
FIELD VERIFY LENGTH.
LIFTING HOLES
LIFTING HOLES
ANCHORED AND SEALED
WITH WATER-STOP
ANCHORED AND SEALED
WITH WATER-STOP
5 STOP LOG AND LIFTING HOOK
8' x 8' CONCRETE FOUNDATION WITH
#6 BARS @ 12" O.C. EACH WAY
3" CLEAR TO BOTTOM
0.75''
MANUFACTURED BEND AND
MECHANICALLY RESTRAINED JOINTS.
MEGALUG OR APPROVED EQUIVALENT
R
EC
LA
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IO
N P
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C
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OF
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N O
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SILT FENCE
FRONT VIEW
8' SPACING
" M
IN
NOTES:
10' MIN.
"T " S
TE
EL
F
EN
C E
PO
ST
'-0
" M
IN
"T
" S
TE
EL
F
EN
C
E
5' MAX 5' MAX 5' MAX 5' MAX
VARIABLE (20' FOR NORMAL 10' DITCH)
STEEL POST TO BE
EMBEDDED 28" BELOW
TRENCH BOTTOM
TRENCH BOTTOM
TRENCH BOTTOM
GROUND LINE
ENGINEERING FABRIC
FLOW
TRENCH AND COMPACTED
BACKFILL 12" MIN DEPTH
4" MIN WIDTH
ENGINEERING FABRIC
TO BE FOLDED ACROSS
BOTTOM OF TRENCH
NORMAL FORESLOPE
1' ABOVE GROUND
NORMAL
BACKSLOPE
2" RISE IN
FENCE
FOLD FABRIC TO
FIT TRENCH
POST
WIRE
CORD
NOTE: TWIST CORD AND
PLACE AROUND POST,
SECURE WITH WIRE.
SECURE TOP OF ENGINEERING
FABRIC TO STEEL POST.
ENGINEERING FABRIC TO BE
PLACED TO BOTTOM OF TRENCH.
ENGINEERING FABRIC SHALL
HAVE A MINIMUM 36" WIDTH.
POST
WIRE
CORD
FABRIC
GROUND
LINE
ENGINEERING
FABRIC
ENGINEERING FABRIC TO BE FOLDED
ACROSS BOTTOM OF TRENCH
TRENCH AND COMPACTED BACKFILL
12" MIN DEPTH AND 4" MIN WIDTH
FORESLOPE
GROUND LINE
ENGINEERING
FABRIC
FLOW
PO
ST
'-0
" M
IN
POST TOP VIEW
DETAILS OF DITCH CHECK
DETAILS OF SILT FENCE
TYPICAL SECTION
SILT FENCE
TYPICAL SECTION
DITCH CHECK
STA: 2
+0
STA: 4
+0
STA: 6
+0
STA: 8
+0
STA: 1
0+
00 STA: 14+00
STA: 16+00
STA: 18+00
STA: 20+00
STA: 22+00
STA: 24+00
STA: 26+00
STA: 28+00
STA: 30+00
STA: 32+00
STA: 34+00STA: 36+00
STA: 38+00STA: 40+00
STA: 42+00
STA: 44+00
STA: 46+00
STA: 48+00
STA: 50+00STA: 52+00
STA: 53+00
X X
X X
X X
X X
X X X
X X X X X X X X X X X X X X X
X X
X X
X X
X X
X
CROSS SECTION
CENTERLINE ALIGNMENT
N O
AH
A
N D
W
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C O
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EA
ST
AJ
H
27 36
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PL
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OF
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IS
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Fi rm
N um be r:
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W es t D es M oi ne s, Io w a
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T O F
A G R I C U L T UR E
L A
ND
S
NORTH
2+00
0 50 100 150 200 250 3000-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
PROTECT
EXISTING DITCH
TERRACE (TYP.)
4+00
0 50 100 150 200 250 3000-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
6+00
0 50 100 150 200 250 3000-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
8+00
0 50 100 150 200 250 300 350 4000-50-100-150-200
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
10+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.) RIDGE (TYP.)
14+00
0 50 100 150 2000-50-100-150-200
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
16+00
0 50 100 150 200 250 300 350 4000-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.) 18+00
0 50 100 150 200 250 300 350 400 450 5000-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
WETLAND (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
20+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)TERRACE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
22+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
26+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400-450-500-550-600-650-700
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
CHANNEL (TYP.)
24+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400-450-500-550-600-650
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
TERRACE (TYP.)
N O
AH
A
N D
W
IL
C O
X
EA
ST
AJ
H
28 36
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C R
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S
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TI
O
N S
AM
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M
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(5
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SHEET
OF
D
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IG
N
B Y:
D R
AW
N
B Y:
C H
KD
. B
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IS
SU
ED
R
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IS
ED
Ill in oi s
Fi rm
N um be r:
-0
W es to w n Pa rk w ay , S ui te
W es t D es M oi ne s, Io w a
5.
3.
f ax
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Io w a
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M is so ur i
S- H
P R
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C T
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M
BE
R
IOWA D
EP
A R
TM
E N
T O F
A G R I C U L T UR E
L A
ND
S
TEWARDSHIP
VERTICAL SCALE:
HORIZONTAL SCALE:
28+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
30+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750-800-850-900-950-1000
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
32+00
0 50 100 150 200 250 300 350 400 450 500 550 600 650 7000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750-800-850-900-950-1000-1050-1100-1150-1200
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
N O
AH
A
N D
W
IL
C O
X
EA
ST
AJ
H
28 36
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O
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S
EC
TI
O
N S
AM
L
R
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LA
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N P
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36+00
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 10000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750-800-850-900-950-1000
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
CHANNEL (TYP.)
WETLAND (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
38+00
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 10000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750-800-850
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
34+00
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 8000-50-100-150-200-250-300-350-400-450-500-550-600-650-700-750-800-850-900-950-1000-1050-1100-1150-1200-1250-1300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
RIDGE (TYP.)
CHANNEL (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
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40+00
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 11000-50-100-150-200-250-300-350-400-450
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
WETLAND (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
42+00
0 50 100 150 200 250 300 350 400 450 5000-50-100-150-200-250-300-350-400-450-500
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
48+00
0 50 100 150 200 250 300 350 400 450 5000-50-100-150-200-250-300-350-400-450-500
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
44+00
0 50 100 150 200 250 300 350 400 450 500 5500-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
WETLAND (TYP.)
46+00
0 50 100 150 200 250 300 350 400 450 500 5500-50-100-150-200-250-300
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)TERRACE (TYP.)
50+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200-250-300-350-400-450-500
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
TERRACE (TYP.)
52+00
0 50 100 150 200 250 300 350 400 450 500 550 6000-50-100-150-200
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
TERRACE (TYP.)
WETLAND (TYP.)
53+00
0 50 100 150 200 250 300 350 400 450 5000-50-100-150-200-250-300-350-400-450-500
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
N O
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860870880
200 300
500 600
800 900
1000 1100
820820
820820
8:
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6:
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7:
5:
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5:
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2.3%
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X
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0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 5+00.00 6+00.00 7+00.00 8+00.00 9+00.00 10+00.00 11+00.00 12+00.00 13+00.00 14+00.00 15+00.00 16+00.00 17+00.00 18+00.00
1.3%
0.8%
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
ROCK RIFFLE (TYP.)
N O
AH
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P3 3A
P3 3D
P3 3C
CP-5
18+00.00 19+00.00 20+00.00 21+00.00 22+00.00 23+00.00 24+00.00 25+00.00 26+00.00 27+00.00 28+00.00 29+00.00 30+00.00 31+00.00 32+00.00 33+00.00 33+50.00
0.8%
PROPOSED GRADE (TYP.)
EXISTING GRADE (TYP.)
ROCK RIFFLE (TYP.)
WETLAND (TYP.)
N O
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NORTH
2.3%
0+00.00 1+00.00 1+50.00
EXISTING POND
NWL = 830.32
PROPOSED WETLAND
FOREBAY
NWL = 830.00
PROPOSED
GROUND (TYP.)
EXISTING
GROUND (TYP.)
0+00.00 1+00.00 1+50.00
PROPOSED
GROUND (TYP.)
EXISTING
GROUND (TYP.)
FLEXAMAT INLET
CHANNEL, CHOKE BASE
WITH FILTER STONE
20 FEET
100 150
5:1
0+00.00 1+00.00 2+00.00 2+50.00
PROPOSED
GROUND (TYP.)
EXISTING
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FLEXAMAT OUTLET
CHANNEL
PROPOSED WETLAND FOREBAY
NWL = 830.00
PROPOSED WETLAND
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2.5%
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PROPOSED
GROUND (TYP.)
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FLEXAMAT OUTLET
CHANNEL
12 FEET
2.
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N O
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VERTICAL SCALE:
HORIZONTAL SCALE:
NORTH
NO
RTH
NORTH
FOREBAY INLET CENTERLINE PROFILE FOREBAY INLET CROSS SECTION PROFILE FOREBAY OUTLET CENTERLINE PROFILE FOREBAY OUTLET CROSS SECTION PROFILE
N O
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STORM WATER POLLUTION PREVENTION PLAN (SWPPP)
THE SITE IS AN ABANDONED COAL MINE RECLAMATION PROJECT; NO TOPSOIL EXISTS PRIOR
TO RECLAMATION-RELATED CONSTRUCTION ACTIVITIES. THEREFORE, THE TOPSOIL
PRESERVATION REQUIREMENT WILL NOT BE MET. THE SITE CONSISTS OF MINE SPOIL
MATERIAL CLASSIFIED AS MINE PITS AND DUMPS - SOIL TYPE 502 ON USDA SOIL SURVEY
MAPS. AFTER FINAL GRADE IS ACHIEVED, AGRICULTURAL LIME WILL BE APPLIED AT A RATE
TO BE DETERMINED BY SOIL TESTS. THE AGRICULTURAL LIME, ALONG WITH 5 TONS OF
MULCH WILL BE INCORPORATED INTO THE UPPER ONE (1) FOOT OF THE MINE SPOIL TO
PRODUCE A GROWING MEDIUM AS OUTLINED IN PROJECT SPECIFICATION 02400. AFTER A
PERIOD OF TIME TO ALLOW FOR NEUTRALIZATION AND MULCH DECOMPOSITION, THE SITE
WILL BE PREPARED FOR SEEDING. AGRICULTURAL LIME, FERTILIZER, SEED AND CRIMPED
MULCH WILL BE APPLIED AS OUTLINED IN PROJECT SPECIFICATION 02700.
REFER TO: CONTENTS OF THE POLLUTION PREVENTION PLAN IN PART IV. D. OF IOWA NPDES GENERAL PERMIT NO. 2 -- EFFECTIVE MARCH 1, 2023 THROUGH FEBRUARY 29, 2028.
1. SITE DESCRIPTION
A. DESCRIBE NATURE OF CONSTRUCTION ACTIVITY:
B. ESTIMATE THE TOTAL AREA OF THE SITE AND THE AREA EXPECTED TO BE DISTURBED BY EXCAVATION, GRADING OR OTHER ACTIVITIES:
· THE PROJECT CONSISTS OF RECLAIMING THE AML SITES DISTURBED BY PAST COAL MINING ACTIVITIES.
THE MAIN OBJECTIVE OF THE AML RECLAMATION IS TO MITIGATE PRIORITY FEATURES THAT PRESENT A
DANGER TO THE HEALTH AND SAFETY OF THE GENERAL PUBLIC.
· THE MAJOR PHASES OF THE PROJECT ARE TEMPORARY EROSION CONTROL; ROUGH GRADING; LIME
TREATMENT OF SURFACE SOILS, FERTILIZING, MULCHING, PERMANENT SEEDING INCLUDING
INSTALLATION OF PERMANENT EROSION CONTROL PRACTICES LIKE (engineer to name typical practices used).
· END USE OF SITE IS: WILDLIFE HABITAT AND/OR RECREATIONAL USE
· THE ESTIMATED PROJECT TIMELINE IS: OCTOBER 2026 TO DECEMBER 2027
· 106.5 ACRES DISTURBED BY MASS GRADING AND CONSTRUCTION ACCESS.
C. ESTIMATE THE SOIL RUNOFF COEFFICIENT OF THE SITE AFTER CONSTRUCTION IS COMPLETED, AND
DESCRIBE THE WATER QUALITY OF ANY EXISTING DISCHARGE FROM THE SITE.
· THE RATIONAL RUNOFF COEFFICIENT FOLLOWING THE ESTABLISHMENT OF FINAL VEGETATION IS ESTIMATED TO BE ABOUT 0.4 TO 0.5. THIS IS ROUGHLY EQUIVALENT TO AN SCS CURVE NUMBER OF 70
WHICH IS TYPICAL FOR PASTURE-GRASS VEGETATION.
· THE WATER QUALITY BEING DISCHARGED FROM THE SITE, AT PRESENT, IS IMPAIRED WITH ACIDIC PH AND HIGH DISSOLVED IRON CONCENTRATIONS WHICH ARE DERIVED FROM THE WATER'S CONTACT WITH BARE MINE SPOIL MATERIAL ON THE SITE. THIS POOR WATER QUALITY IS OFTEN INDICATED BY
RUST-COLORED PRECIPITANT IN THE RECEIVING WATERS.
D. PROVIDE A SITE MAP SATISFYING REQUIREMENTS DESCRIBED IN PART IV. D.1.A.D.:
·SEE BMP PLAN SHEET 36 FOR…
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