6_26-07_Cal883432B - Plans Feb 2025.pdf

30402-C0-TITLE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

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CAL883432B GRODAHL WETLAND

CALHOUN COUNTY, IOWA

PROJECT INDEX:

OWNER:

GRODAHL FARMS INC.

1471 270TH ST.

LYTTON, IA 50561

PROJECT

ADDRESS / LOCATION:

SECTION 32/T88N/R34W

GARFIELD TWP

LYTTON, IA

PROJECT MANAGER: CALEB RASMUSSEN

EMAIL: CALEB.RASMUSSEN@ISGINC.COM

IDALS

ISG PROJECT # 24-30402

B.M. ELEVATION=1216.76

CUT "X" IN TOP OF RCP CULVERT SOUTH

SIDE OF FIELD DRIVE ALONG DURANT AVE

AND SOUTH PROPERTY LINE.

MANAGING OFFICE:

TOPOGRAPHIC SURVEY

THIS PROJECT'S TOPOGRAPHIC SURVEY CONSISTS

OF DATA COLLECTED IN APRIL 2024 BY ISG.

PROJECT GENERAL NOTES

LEGEND

GIS DISCLAIMER:

INFORMATION FOR THE BOUNDARY / LOT LINES, AND UNDERGROUND UTILITIES SHOWN WAS DERIVED FROM DIGITAL DATABASES AND IS FOR INFORMATIONAL PURPOSES ONLY. DATA MAY NOT HAVE BEEN

PREPARED FOR, OR BE SUITABLE FOR: LEGAL, ENGINEERING, OR SURVEYING PURPOSES.

LOCATION MAP

EXISTING

CITY LIMITS

ACCESS CONTROL

SECTION LINE

QUARTER SECTION LINE

RIGHT OF WAY LINE

PROPERTY / LOTLINE

EASEMENT LINE

CULVERT

WATER EDGEW

WET WETLAND BOUNDARY

WATER

FENCE LINE

UT

TILE

CONTOUR (MAJOR)

I

UNDERGROUND TELEPHONE

OVERHEAD ELECTRICOE

UNDERGROUND ELECTRICUE

UNDERGROUND TVUTV

GASG

FBO UNDERGROUND FIBER OPTIC

CONTOUR (MINOR)

DECIDUOUS TREE

CONIFEROUS TREE

TREE LINE

DROP INTAKE

HYDRANT

POWER POLE

PROPOSED

TILE

WATERI I

OVERHEAD ELECTRICOE

UNDERGROUND ELECTRICUE

UNDERGROUND TVUTV

GASG

CONTOUR (MINOR)

DROP INTAKE

EASEMENT

OPEN DITCH REPAIR>>

TILE (PIPE WIDTH)

PROPOSED OPEN DITCH

OVERHEAD UTILITYOHL

UNDERGROUND UTILITY UTL

EXISTING OPEN DITCH>>

WATERSHED BOUNDARY

CONTOUR (MAJOR)

CULVERT (CMP)

SLOUGH REPAIR

SPOIL PLACEMENT

CULVERT (RCP)

TREE CLEARING

REMOVE TREE

BUFFER

>> PRIVATE TILE

CULVERT (HDPE)

PRIVATE TILE>>>

N

S

W E

PROJECT DATUM

HORIZONTAL COORDINATES HAVE BEEN REFERENCED TO THE

NORTH AMERICAN DATUM OF 1983 (NAD83), ON THE IOWA

REGIONAL ZONE 4 COORDINATE SYSTEM, IN U.S. SURVEY FEET.

ELEVATIONS HAVE BEEN REFERENCED TO THE NORTH

AMERICAN VERTICAL DATUM OF 1988 (NAVD 88).

RTK GPS METHODS WERE USED TO ESTABLISH HORIZONTAL AND

VERTICAL COORDINATES FOR THIS PROJECT.

SPECIFICATIONS REFERENCE

ALL CONSTRUCTION SHALL COMPLY WITH CALHOUN COUNTY'S

REQUIREMENTS AND WITH THE MOST RECENT NRCS

CONSTRUCTION SPECIFICATION, UNLESS DIRECTED

OTHERWISE.

1. ALL WORK SHALL CONFORM TO THE CONTRACT

DOCUMENTS, WHICH INCLUDE, BUT ARE NOT LIMITED TO,

THE OWNER - CONTRACTOR AGREEMENT, THE PROJECT

MANUAL (WHICH INCLUDES GENERAL SUPPLEMENTARY

CONDITIONS AND SPECIFICATIONS), DRAWINGS OF ALL

DISCIPLINES AND ALL ADDENDA, MODIFICATIONS, AND

CLARIFICATIONS ISSUED BY ARCHITECT/ENGINEER.

2. CONTRACT DOCUMENTS SHALL BE ISSUED TO ALL

SUBCONTRACTORS BY THE GENERAL CONTRACTOR IN

COMPLETE SETS IN ORDER TO ACHIEVE THE FULL EXTENT

AND COMPLETE COORDINATION OF ALL WORK.

3. WRITTEN DIMENSIONS TAKE PRECEDENCE OVER SCALED

DIMENSIONS. NOTIFY ARCHITECT/ENGINEER OF ANY

DISCREPANCIES OR CONDITIONS REQUIRING INFORMATION

OR CLARIFICATION BEFORE PROCEEDING WITH THE WORK.

4. FIELD VERIFY ALL EXISTING CONDITIONS AND DIMENSIONS.

NOTIFY ARCHITECT/ENGINEER OF ANY DISCREPANCIES OR

CONDITIONS REQUIRING INFORMATION OR CLARIFICATION

BEFORE PROCEEDING WITH THE WORK.

5. DETAILS SHOWN ARE INTENDED TO BE INDICATIVE OF THE

PROFILES AND TYPE OF DETAILING REQUIRED

THROUGHOUT THE WORK. DETAILS NOT SHOWN ARE

SIMILAR IN CHARACTER TO DETAILS SHOWN. WHERE

SPECIFIC DIMENSIONS, DETAILS, OR DESIGN INTENT

CANNOT BE DETERMINED, NOTIFY ARCHITECT/ENGINEER

BEFORE PROCEEDING WITH THE WORK.

6. ALL MANUFACTURED ARTICLES, MATERIALS, AND

EQUIPMENT SHALL BE APPLIED, INSTALLED, CONNECTED,

ERECTED, CLEANED, AND CONDITIONED ACCORDING TO

MANUFACTURERS' INSTRUCTIONS. IN CASE OF

DISCREPANCIES BETWEEN MANUFACTURERS'

INSTRUCTIONS AND THE CONTRACT DOCUMENTS, NOTIFY

ARCHITECT/ENGINEER BEFORE PROCEEDING WITH THE

WORK.

7. ALL DISSIMILAR METALS SHALL BE EFFECTIVELY ISOLATED

FROM EACH OTHER TO AVOID GALVANIC CORROSION.

8. THE LOCATION AND TYPE OF ALL EXISTING UTILITIES

SHOWN ON THE PLANS ARE FOR GENERAL INFORMATION

ONLY AND ARE ACCURATE AND COMPLETE TO THE BEST

OF THE KNOWLEDGE OF I & S GROUP, INC. (ISG). NO

WARRANTY OR GUARANTEE IS IMPLIED. THE

CONTRACTOR SHALL VERIFY THE SIZES, LOCATIONS, AND

ELEVATIONS OF ALL EXISTING UTILITIES PRIOR TO

CONSTRUCTION. CONTRACTOR SHALL IMMEDIATELY

NOTIFY ENGINEER OF ANY DISCREPANCIES OR

VARIATIONS FROM PLAN.

9. THE CONTRACTOR IS TO CONTACT "IOWA ONE CALL" FOR

UTILITY LOCATIONS A MINIMUM OF 2 BUSINESS DAYS

PRIOR TO ANY EXCAVATION / CONSTRUCTION

(1-800-292-8989).

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CONSTRUCTION PLANS

CALHOUN COUNTY IOWA

1725 LAKE AVE. NORTH

STORM LAKE, IA 50588

PHONE: 712.732.7745

STORM LAKE OFFICE

TITLE

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GRODAHL

WETLAND

IDALS CAL883432

270TH STREET

280TH STREET

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Printed or typed name

(signature) (date)

License number

SEAL

WIO A

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NS

ED

PROFESS IONAL ENGI NEER

I hereby certify that this engineering document was prepared by me or under direct personal supervision and that I am a duly licensed Professional Engineer under the laws of the State of Iowa.

My license renewal date is December 31, Pages or sheets covered by this seal:

CALEB

RASMUSSEN

25713

CALEB RASMUSSEN

All Sheets

25713

2-13-2025

C0-10 TITLE

C0-20 NOTES AND QUANTITIES

C0-30 DETAILS

C0-31 DETAILS

C1-10 SITE RESTORATION PLAN

C2-10 EXISTING SITE - WATERSHED

C3-10 SITE PLAN

C3-20 PLAN - PROFILE

C3-21 OUTLET STRUCTURE AND TILE

C4-10 GRADING PLAN

C4-20 CUT - FILL

C4-30 CROSS SECTION

LYTTON, 2 MILES

PROJECT LOCATION

30402-C0-DETAILS

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

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C0-20

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CALHOUN COUNTY IOWA

NOTES AND

QUANTITIES

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IDALS CAL883432

CONSTRUCTION NOTES:

GENERAL NOTES

1. ACCESS - CONTRACTOR IS TO ARRANGE ACCESS WITH LANDOWNER PRIOR TO CONSTRUCTION. CONTRACTOR IS RESPONSIBLE TO SECURE PERMISSION OF THE

COUNTY ENGINEER TO CONSTRUCT TEMPORARY ACCESS IF NECESSARY.

2. EQUIPMENT STAGING: CONTRACTOR TO DESIGNATE EQUIPMENT STAGING AREA AT PRE-CONSTRUCTION MEETING.

2.1. REFER TO THE PLANS FOR FLOOD PLAIN EXTENTS. THE CONTRACTOR IS RESPONSIBLE FOR MONITORING WEATHER AND REMOVING EQUIPEMENT FROM THE

FLOODPLAIN IF AN ADVERSE EVENT IS EXPECTED.

3. WORK LIMITS ARE CONFINED TO THE EASEMENT AREA EXCEPT WHERE INDICATED ON PLANS. CONTRACTOR SHALL TRY TO MINIMIZE DISTURBANCE FOOTPRINT.

4. UTILITIES: CONTRACTOR IS RESPONSIBLE FOR CALLING IOWA ONE CALL (1-800-292-8989) AND MUST PROVIDE VERIFICATION (TICKET NO.) TO THE ENGINEER PRIOR

TO MOBILIZATION. CONTRACTOR RESPONSIBLE FOR PROTECTION OF ALL UTILITIES AND IS RESPONSIBLE TO VERIFY LOCATION/ELEVATION OF ALL UTILITIES IN WORK AREA PRIOR TO EXCAVATION. A DESIGN ONE CALL WAS PERFORMED ON DECEMBER 31, 2024.

4.1. EXPECTED WETLAND UTILITIES: NONE.

4.2. EXPECTED FIELD ENTRANCE UTILITIES:

4.2.1. MID-AMERICAN ELECTRIC

4.2.2. MID-AMERICAN GAS

4.2.3. WINDSTREAM COMMUNICATIONS

5. DEWATERING: CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING REASONABLE DRY WORKING CONDITIONS DURING CONSTRUCTION. ANY TEMPORARY

DEWATERING IS TO BE AT CONTRACTOR'S DISCRETION AND INCIDENTAL TO ITEMS OF WORK.

6. TOPSOIL STRIPPING (CS-IA-01):

a. STRUCTURE AND BORROW AREAS SHALL BE STRIPPED OF NO LESS THAN TWELVE (12) INCHES.

b. AREAS FOR TILE WORK SHALL BE STRIPPED NO LESS THAN TWELVE (12) INCHES.

c. ALL OTHER AREAS TO BE STRIPPED TO NINE (9) INCHES.

7. TOPSOIL STOCKPILE: CONTRACTOR IS RESPONSIBLE FOR SEGREGATION TOPSOIL FROM EXCAVATION SPOILS THROUGHOUT CONSTRUCTION. CONTRACTOR IS TO

DESCRIBE TOPSOIL MANAGEMENT AT PRECONSTRUCTION MEETING.

8. TOPSOIL SPREADING: ALL AREAS RECEIVING TOPSOIL DRESS SHALL BE UNDERCUT 6 INCHES AND TOPSOIL SHALL BE SPREAD AT LEAST 6 INCHES THICK TO THE

DESIGN SURFACE, OR AS INDICATED ON PLANS.

9. EARTHFILL: ALL STRUCTURAL EARTHFILL SHALL BE PLACED AND COMPACTED IN LOOSE LIFTS NO THICKER THAN NINE (9) INCHES. ENGINEER MAY DIRECT THINNER

LIFTS BASED ON AVAILABLE COMPACTION EQUIPMENT.

10. AREAS UNDER FILL SHALL BE SCARIFIED LIGHTLY BEFORE FIRST LIFT TO A DEPTH OF SIX (6) INCHES AND RECOMPACTED IN ACCORDANCE WITH SPECIFICATION

IA-23, SECTION 6, METHOD 1.

11. CONSTRUCT CORE TRENCH UNDER ENTIRE DIKE ALIGNMENT AT CENTERLINE.

12. TESTING: CONTRACTOR TO ENSURE ADEQUATE MOISTURE AND DENSITY THROUGHOUT CONSTRUCTION. COMPACTION IS TO BE PERFORMED IN ACCORDANCE

WITH SPECIFICATION IA-23 EARTHFILL. CONTRACTOR IS RESPONSIBLE FOR ENSURING SOILS MEET ADEQUATE MOISTURE REQUIREMENTS.

13. WEED CONTROL IA CS-06: CONTRACTOR IS REQUIRED TO CONTROL WEED GROWTH WITHIN THE WORK LIMITS AS NEEDED WITHIN THE CONSTRUCTION LIMITS, FOR

THE APPROVED CONSTRUCTION WINDOW.

14. RUBBISH DISPOSAL IA CS-01: ROCKS, FENCE, AND RUBBISH ENCOUNTERED WITHIN THE EASEMENT AREA ARE TO BE DISPOSED OF BY BURIAL OR OTHER

APPROVED MEANS. MISCELLANEOUS ROCKS AND RUBBISH ENCOUNTERED DURING EXCAVATION ARE TO BE INCLUDED FOR BURIAL AS WELL. A MINIMUM OF THREE

(3) FEET OF COVER OVER BURIED RUBBISH IS REQUIRED. CONTACT ENGINEER PRIOR TO REMOVING ANY FENCE.

15. WORKMANSHIP: CONTRACTOR SHALL PERFORM ALL WORK WITH CRAFTSMAN-LIKE APPEARANCE AND LEAVE NO TRASH/DEBRIS AFTER DEMOBILIZATION.

16. SAFETY - CONTRACTOR IS RESPONSIBLE FOR SAFETY ON THE WORK SITE, INCLUDING THE BRACING OF, SHORING OF, SHAPING OF, AND/OR USE OF TRENCH BOX IN

THE EXCAVATIONS. THIS INCLUDES KNOWLEDGE AND COMPLIANCE WITH ALL RULES AND REGULATIONS INTENDED TO PROTECT THE HEALTH AND SAFETY OF THE CONTRACTOR, ENGINEERS, AND OWNER'S PERSONNEL. ALL TRENCHING SHALL BE DONE ACCORDING TO OSHA STANDARDS FOR THE PROTECTION OF LIFE.

17. FLOODPLAIN: PROJECT WORK LIMITS RESIDE IN A MAPPED FLOODPLAIN. MATERIALS, EQUIPMENT, AND EXCESS SPOIL MAY NOT BE STOCKPILED OR STORED WITHIN THE FLOODPLAIN. FINAL GRADING SHOULD BE DONE TO ENSURE ANY SPOIL PLACEMENT AND FILL WITHIN THE FLOODPLAIN DOES NOT DEVIATE SIX (6) INCHES

FROM EXISTING GRADE.

18. VEGETATION CLEARING & TREATMENT: VEGETATION MANAGEMENT TO BE DETERMINED BASED ON CONSTRUCTION SCHEDULE AND AVAILABLE SEEDING WINDOWS.

CONTRACTOR IS EXPECTED TO BE ABLE TO PERFORM, MOWING/HAYING WITH REMOVAL (SUCH AS BIG ROUND BALES), CONTROL FIRE BURN, CHEMICAL BURN (BY LICENSED APPLICATOR), AND DISCING-HARROWING. FOR THE PURPOSES OF BIDDING, A CONTROL FIRE BURN, FOLLOWED BY 2 APPLICATIONS FOR CHEMICAL

TERMINATION, FOLLOWED BY LIGHT DISCING WITH DRAG HARROW FOLLOWER IS EXPECTED.

TILE INSTALLATION

19. WORK LIMITS - OUTSIDE OF EASEMENT AREA, CONTRACTOR SHALL LIMIT CONSTRUCTION ACTIVITY TO WITHIN A 90 FOOT WIDE CORRIDOR ALONG THE LENGTH OF

THE TILE ALIGNMENTS AS SHOWN ON THE PLANS.

20. TILE INVESTIGATION - VERIFY LOCATIONS AND ELEVATIONS OF EXISTING TILE PRIOR TO CONSTRUCTION. TILE INVESTIGATION INCLUDES TIME NECESSARY TO

LOCATE AND DIG EXISTING TILES. EXPLORATION FOR DESIGN FOR TILE ENCOUNTERED, BUT NOT SHOWN ON THE PLANS WILL BE PAID UNDER THIS ITEM.

21. CONTRACTOR SHALL NOTIFY THE ENGINEER OF ALL TILE FOUND DURING THE TILE INVESTIGATION AND DURING WETLAND EXCAVATION.

22. CONTRACTOR SHALL MAKE EFFORT TO SEGREGATE ORGANIC TOPSOIL TO MINIMUM DEPTH OF 12 INCHES FOR ALL TILE WORK OUTSIDE OF EXCAVATION AND FILL

AREAS.

23. FIELD TILE CONNECTIONS - CONNECTIONS TO INTERCEPTED FIELD TILE 12" DIAMETER AND LESS SHALL BE MADE AND ENCASED IN A PORTLAND CEMENT

CONCRETE (PCC) COLLAR AT LEAST TWELVE (12) INCHES WIDE AND FOUR (4) INCHES THICK, CONTINUOUS AROUND THE JOINTS. ALTERNATIVE CONNECTIONS MUST

BE APPROVED BY THE ENGINEER.

24. ALL TILE SHALL BE BLINDED WITH NATIVE SOILS OR ASTM CLASS 2 MATERIAL WHEN REQUIRED IN REGULAR INTERVALS AS INSTALLATION PROCEEDS. TILE FOUND TO BE FLOATING IN THE TRENCH SHALL BE REMOVED, THE TRENCH DEWATERED, AND THE TILE IMMEDIATELY INSTALLED AND BLINDED.

25. TILE SHALL BE INSTALLED ACCORDING TO MANUFACTURERS' SPECIFICATIONS USING EITHER A SPOON TRENCH CONFORMING TO THE CURVE OF THE PIPE UP TO THE HAUNCH/SPRING LINE. FOR A BLAT BOTTOM TRENCH THE PIPE SHALL BE BEDDED AND BACKFILLED WITH AGGREGATE TO THE SPRING LINE.

RISER INLET & CONTROL STRUCTURE NOTES

26. STRUCTURE SHOP DRAWINGS ARE REQUIRED FOR ENGINEER'S REVIEW AND APPROVAL BEFORE FABRICATION OF STRUCTURES, REFER TO INSPECTION TABLE.

27. DRAIN BASIN TO BE CUSTOM MANUFACTURED ACCORDING TO PLAN DETAILS.

28. DRAINAGE CONNECTION STUB JOINT TIGHTNESS SHALL CONFORM TO ASTM D3212 FOR CORRUGATED HDPE.

29. USE ASTM CLASS 2 MATERIAL TO BED AND LEVEL STRUCTURE. LOOSE EARTH FILL IS NOT PERMITTED AS BACKFILL TO LEVEL THE STRUCTURE.

30. CHECK TO ENSURE STRUCTURE IS LEVEL PRIOR TO BACKFILLING. PLACE BACK FILL MATERIAL AROUND STRUCTURE IN 6" LIFTS AND COMPACT BY HAND. DO NOT

USE POWERED EQUIPMENT.

31. BACKFILL AROUND STRUCTURES SHALL BE COMPACTED BY HAND. NO MECHANICAL PACKING METHODS MAY BE USED.

ITEMS OF WORK TABLE

INSPECTION TABLE

CONSERVATION PRACTICE STANDARDS

PRIMARY

656: CONSTRUCTED WETLAND

SUPPORTING

327: CONSERVATION COVER

342: CRITICAL AREA PLANTING

356: DIKE OR LEVEE

587: STRUCTURE FOR WATER CONTROL

606: SUBSURFACE DRAIN

620: UNDERGROUND OUTLET

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

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CALHOUN COUNTY IOWA

DETAILS

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IDALS CAL883432

SECTION VIEW

PLAN VIEW

NOTE:

NUMBER OF RODS AND SIZE OF GRATE

VARY W/ SIZE OF TILE INTAKES. PAINT

WITH TWO (2) COATS RUST INHIBITING

PAINT FOLLOWING FABRICATION.

CMP SLOTTED INTAKE RISER

NTS

BEEHIVE INLET GRATE (STEEL BARS)

NTS

9040.110

RIP RAP FOR PIPE OUTLET

ONTO FLAT GROUND

SUDAS Standard Specifications

Section A-A

To e of S lo pe min.

8'

8'

4'

T

Slope = 0%

Engineering Fabric

Stable Ground

Thickness, T Construct notch at end of apron.

Depth = 2T

Footing for Apron

PLAN

PROFILE

4'

4'

1'

If Specified

18" DIA CMP

TOP VIEW

3 F T

POOL EL=1181.50

I=1178.00

WATER CONTROL STRUCTURE

NTS

18" MIN.12" - 18"

2'

78"

2" MIN.

7.25' MIN.

8' MAX.

ELEV = 1184.50

1/4" STEEL ROD MINIMUM

BEEHIVE INLET GRATE

(SEE DETAIL)

SLOTTED PERFORATIONS

2" X 6" SLOTS SPACED 8" HORIZ. & 6"

VERT. OFFSET COLUMNS 4" AND 8"

FROM TOP OF STRUCTURE

30° TYPICAL

SEAM

℄ SLOT

2' WELDED STUB, 10" DIA.

SURROUND

RISER WITH 16

TON EROSION

STONE

CORRUGATED

METAL RISER W/

PERFORATIONS

CONNECT TO HDPE WITH

REINFORCED CONCRETE COLLAR OR

MANUFACTURED COUPLER FOR

DISSIMILAR MATERIALS

(BUTT JOINT)

BERM

SLOPE

EXISTING GROUND

54" CMP RISER

8" CONCRETE BASE

15" CMP 15" CMP

10" HDPE10" HDPE

3-CHAMBER WCS

LOCKABLE LID

#4 DEFORMED BAR @ 12" OCEW

EMBED 1 1/2 CORRUGATIONS

2'

24"

SURROUND WITH 4 TN CRUSHED

STONE, ASTM D2321

CLASS 2 MATERIAL

HDPE SPOON TRENCH

NTS

PIPE IDUNDISTURBED SOIL

BACKFILL WITH TRENCH MATERIAL

SPOON EXTENTS

PLACE 1.5 TN/100LF ASTM CLASS 2

MATERIAL (MECHANICALLY

COMPACT TO TOP OF PIPE IN 6"

LIFTS), WHERE SHOWN ON PLANS

NOTES:

1. ASTM CLASS 2 AND BACKFILL SHALL BE INCIDENTAL TO CONSTRUCTION.

2. SPOON DIMENSIONS SHALL COMPLY WITH PIPE MANUFACTURER'S SPECIFICATIONS.

3. THE FIRST LIFT OF BACKFILL SHALL BE PLACED WITH AN EXCAVATOR WITH NO MORE

THAN 2' OF DROP.

4. CRUSHED CONCRETE, MEETING THE REQUIREMENTS OF ASTM CLASS 2 MATERIAL

MAY BE USED. ENGINEER TO AUTHORIZE USE, PRIOR TO MATERIAL STAGING.

FIL

L H

EI

GH

T (V

AR

IE

S)

MRdified fRU pURMecW XVe.

CONNECT TO HDPE WITH

REINFORCED CONCRETE COLLAR OR

MANUFACTURED COUPLER FOR

DISSIMILAR MATERIALS

CONNECT TO HDPE WITH

REINFORCED CONCRETE COLLAR OR

MANUFACTURED COUPLER FOR

DISSIMILAR MATERIALS

INLET AND

OUTLET

INVERT=1177.55

NOTE:

DO NOT USE ENGINEERING FABRIC TO

INSTALL RISER OR PLACE SURROUND

STONE.

8"

SUPPORT STUB ON CONCRETE BASE

6'

18"

PLAN VIEW

ENSURE INTERNAL

STRUCTURE LID

CAN BE REMOVED

WITHOUT

REMOVING

EXTERNAL

STRUCTURE LID

LID HINGE

SECTION VIEW

6" MIN6" MIN

NOTE: IN LIEU OF FABRIC USE 1.5TN ASTM CLASS 2, 6 INCH THICK

LID NOTE:

LID TO BE SECURED TO CMP WITH EITHER COMPRESSION BAND OR SET SCREWS AND BAND IS TO EXTEND APPROXIMATELY

3 INCHES BELOW THE STRUCTURE RIM.

LID SHALL HAVE MINIMAL OPENINGS AND HOLES AND BE RELATIVELY IMPERMEABLE TO WATER.

MINIMUM THICKNESS OF LID MATERIAL TO BE 3/32" AND NO BIGGER THAN 3/16" CARBON STEEL.

LID SHALL HAVE 2 BARREL HINGES ALLOWING FOR >105 DEGREE OPENING.

PLACE INTERNAL STRUCTURE SO ACCESS STOP LOGS AND BE FREELY MOVED WITHOUT ANGLING THE REMOVAL TOOL.

REFER TO IA CS-051 FOR COATING REQUIREMENTS.

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

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CALHOUN COUNTY IOWA

DETAILS

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WETLAND

IDALS CAL883432

OPTION 1 WCS SPECIFIC:

1. FLASH BOARDS SHALL BE PVC.

2. ALL RIVETS SHALL BE STAINLESS STEEL.

3. FLASHBOARD CHANNEL SHALL BE ANODIZED ALUMINUM.

4. FLASHBOARDS WILL REMAIN IN STRUCTURE DURING INSTALLATION.

5. FLASHBOARDS SHALL BE LUBRICATED UPON REMOVAL.

WCS GENERAL NOTES:

1. TOOL TO REMOVE FLASHBOARDS/ACTUATE VALVE IS TO REMAIN IN WCS

FOLLOWING INSTALLATION.

2. FOR INLET ADAPTER, MAX SIZE IS TWO SIZES DOWN FROM STRUCTURE SIZE (I.E. 8"

ADAPTER ON 12" STRUCTURE.

3. CHECK TO ENSURE THE STRUCTURE IS LEVEL PRIOR TO BACKFILLING. PLACE THE

BACKFILL MATERIAL AROUND THE STRUCTURE IN 6" LIFTS AND COMPACT BACKFILL

BY HAND ONLY. DO NOT USE POWERED EQUIPMENT TO COMPACT THE BACKFILL.

4. WATER CONTROL STRUCTURES WILL HAVE A MINIMUM OF 20' NONPERFORATED

PIPE BETWEEN WATER CONTROL STRUCTURE AND DITCH.

5. ONE ANTISEEP COLLAR WILL BE INSTALLED ON THE 20' OF NONPERFORATED PIPE

BETWEEN THE WATER CONTROL STRUCTURE AND DITCH.

6. FOLLOW MANUFACTURER'S RECOMMENDATIONS FOR INSTALLATION OF

WATERTIGHT TEE, INCLUDING MINIMUM ANGLE OF SEPARATION.

7. WATER TIGHT TEE, QUANTITY, AND INSTALLATION METHOD DEPENDENT ON WCS

MANUFACTURER.

8. FINAL CONFIGURATION OF WATER CONTROL STRUCTURES WILL BE DETERMINED BY

AVAILABILITY FROM THE MANUFACTURER.

9. COMPONENTS OF WATER CONTROL STRUCTURES MAY BE PRICED SEPARATELY

DEPENDING ON THE SUPPLIER.

NRCS NOTES*:

1. WATER CONTROL STRUCTURE (WCS) MATERIALS AND INSTALLATION SHALL BE IN

CONFORMANCE WITH IOWA NRCS CONSTRUCTION SPECIFICATION (CS) IA-45,

PLASTIC (PVC, PE) PIPE.

2. CONNECTING PIPE MATERIALS AND INSTALLATION SHALL BE IN CONFORMANCE

WITH CS IA-45; IA-46, TILE DRAINS FOR LAND DRAINAGE; IA-51, CORRUGATED METAL

PIPE CONDUITS; OR IA-52, STEEL PIPE CONDUITS.

3. WCS SHALL BE FABRICATED OF PVC WITH INTEGRAL UPSTREAM AND DOWNSTREAM

WATER-TIGHT COUPLING CONNECTIONS, CORROSION-RESISTANT STOP BOARDS,

ALUMINUM EXTRUSIONS AND STAINLESS STEEL FASTENERS AND APPURTENANCES.

ACCEPTABLE MODELS INCLUDE AGRI DRAIN, NYLOPLAST, OR APPROVED EQUAL.

4. WCS SHALL PROVIDE FLOW CAPACITY EQUAL TO OR GREATER THAN THAT OF

ADJACENT PIPE UNDER EXPECTED FLOW CONDITIONS.

5. STOP BOARDS SHALL PROVIDE A WATER-TIGHT SEAL UNDER 4 FT OF PRESSURE

HEAD (MIN.).

6. IN SITUATIONS WHERE WATER LEVELS HIGHER THAN MAXIMUM DESIGN ELEVATION

WOULD IMPACT NEIGHBORING PROPERTIES OR OTHER ASPECTS OF THE SITE

DESIGN, CONSIDER A CUSTOM-ORDER BOX WHICH LIMITS EXTENT OF STOP BOARD

TRACKS TO THE MAXIMUM DESIGN WEIR ELEVATION.

7. STOP BOARD REMOVAL TOOL SHALL BE PROVIDED.

8. AS AN ALTERNATIVE TO A STOP BOARD STRAIGHT WEIR STRUCTURE, A CIRCULAR

INNER STANDPIPE MAY BE PROVIDED WHICH MEETS THE DESIGN FLOW

REQUIREMENTS, WITH APPROVAL OF THE ENGINEER (NYLOPLAST STANDPIPE WCS

OR EQUAL).

9. ALL CONNECTIONS SHALL BE WATER-TIGHT.

10. STRUCTURE LID SHALL BE PROVIDED WITH LOCKING MECHANISM.

11. BACKFILL AROUND THE WCS SHALL MEET THE REQUIREMENTS OF CS IA-45. NORMAL

STOP BOARD OPERATION SHALL BE VERIFIED FOLLOWING BACKFILL.

12. MARK LOCATION OF EACH STRUCTURE USING POST OR MANUFACTURED MARKER

FLAG FOR SAFETY IN THE FIELD

*FROM USDA-NRCS IA-1530 STANDARD DRAWING

FLOW FLOW

WATER TIGHT FITTING

FOR UPSTREAM

CONNECTING PIPE

LID TO BE FURNISHED WITH STRUCTURE

WATER TIGHT FITTING FOR

DISPERSION LINE WATER TIGHT FITTING

FOR DOWNSTREAM

CONNECTING PIPE

ALL FLASH BOARDS SHALL BE FITTED

WITH LIFTING HOOKS AND EDPM SEAL

(NOT SHOWN)

EXTRA FLASH BOARDS TO BE

PULLED ABOVE SET WEIR ELEVATION

FOR STORAGE

FLASH BOARD GUIDE CHANNEL

OPTION 1

WATER CONTROL STRUCTURE DETAIL

NTS

AUXILIARY SPILLWAY

WITH CONCRETE EROSION MAT

NTS

WETLAND NWL = 1181.50

EXISTING GROUND

PROPOSED GRADE FLOW TIED CONCRETE BLOCK EROSION MAT

INSTALLED PER MANUFACTURER RECOMMENDATIONS FOR

PERPENDICULAR FLOW FOR SPILLWAYS AND OVERFLOWS

8:1

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

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C0-32

2-13-2025

24-30402

C0-32 DETAILS

---- ---- C0-32

CALHOUN COUNTY IOWA

DETAILS

JAT

HPT

CDR

GRODAHL

WETLAND

IDALS CAL883432

9040.105

WATTLE

SUDAS Standard Specifications

Disturbed Area

Area to be Protected

Space as specified in the contract documents.

4' -0

" m ax

Wattle

Dire ctio n of F low

3'-0"

4'-0" max.

Stakes

2-4" Trench

Compact trench spoil against uphill side of wattle.

9" (nominal) dia.

or as specified.

Joint Wrap

Turn uphill.

9040.111

RIP RAP APRON FOR PIPE

OUTLET INTO CHANNEL

SUDAS Standard Specifications

Top of Bank

Stable Channel

Edge of Channel

Top of Bank

Section A-A

W id th , W

T min.

Slope = 0%

Construct notch at end of apron.

Depth = 2T.

CROSS-SECTION

Engineering Fabric

Thickness, T

Engineering Fabric

Footing for Apron

PROFILE

PLAN

4'

10' 10'

6:1

1:1

8'

4'

CENTERLINE

TOPSOIL SPREAD

TOPSOIL STRIPPING

CORE TRENCH

EARTHEN DIKE

DIKE AND CORE TRENCH

TYPICAL SECTION

NTS

PROPOSED GROUND

EXISTING

GROUND

TRENCH DAM

NTS

2'

NOTES:

1. BETONITE SHALL BE EITHER IN

GRANULAR OR CHIP FORM, WITH A

MAXIMUM NOMINAL SIZE OF 3

8"

MIXED WITH NO MORE THAN 80%

SAND (C33).

2. THE TRENCH DAM (ANTI-SEEP COLLAR)

SHALL EXTEND AT LEAST 6 INCHES

BEYOND THE STANDARD PIPE

TRENCH.

3. PLACEMENT OF THE COLLAR SHALL NOT

BE WITHIN 2 FEET OF A PIPE JOINT.

4. MINMUM DISTANCE FROM EDGE OF PIPE

IS 3x PIPE DIAMETER OR 6" BEYOND

TRENCH EXTENTS, WHICHEVER IS

GREATER, TYP

BENTONITE/SAND MIX (25:75)

2.5'

SEE NOTE 4

2.5'

SEE NOTE 410"

CARRIER PIPE

2'

MI

N 2'

GRODAHL FARMS INC

GRODAHL

WETLAND

IDALS CAL883432

30402-C1-SWPPP

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C1-10

C1-10 SITE RESTORATION PLAN

SCALE IN FEET

50 100

TOP OF BANK (TYP)

WEST FORK CAMP CREEK

C1-10

2-13-2025

24-30402

SITE

RESTORATION

PLAN

JAT

HPT

CDR

CALHOUN COUNTY IOWA

EROSION CONTROL LEGEND

SYMBOL DESCRIPTION

RIP RAP, CLASS E OR EROSION STONE

BUFFER SEEDING

STRUCTURE, WATERWAY, & CHANNEL SEEDING

STRAW WATTLE

EXISTING CONTOUR (MINOR INTERVAL)

EXISTING CONTOUR (MAJOR INTERVAL)

PROPOSED CONTOUR (MINOR INTERVAL)

PROPOSED CONTOUR (MAJOR INTERVAL)

TEMPORARY WORK LIMITS

APPROXIMATE PARCEL LINE (TYP)

INSTALL NATIVE

BUFFER SEED MIX

3.0 ACRES

INSTALL CRIMPED STRAW

MULCH OVER DIKE

0.6 ACRES

STRAW WATTLE, 50FT EACH

INSTALL WATERWAY SEEDING,

0.2 ACRES

FINAL RESTORATION OF CROP GROUND

OUTSIDE EASEMENT AREA TO BE

DETERMINED DURING CONSTRUCTION

SITE ACCESS TO BE DECOMPACTED AND RESEEDED

WITH STRUCTURE, WATERWAY, & CHANNEL SEEDING.

0.8 ACRES ASSUMED TO BE RESTORED

PRESTAGE FARMS OF IOWA LLC

4 WIRTJERS, PATRICIA M LE

16.04

GLASNAPP, ROGER REVOC TRUST

24.09 GLASNAPP, ROGER REVOC TRUST

40 MILLER, KATHLEEN K LE

DRUM, DALE L/MARILYN J LE

38.78

DRUM, DEBRA ET AL

32.75

PIERCE, LARRY R

7.25

KREFT POPCORN FARM INC

24.54 KREFT POPCORN FARM INC

40 KREFT POPCORN FARM INC

40 GRODAHL FARMS INC

GRODAHL FARMS INC

39.15

RILEY, MINDY ANN

KREFT POPCORN FARM INC

25.01 KREFT POPCORN FARM INC

40 KREFT POPCORN FARM INC

GRODAHL FARMS INC

GRODAHL FARMS INC

WIRTJERS, PATRICIA M LE

WILLIAMS, ROBERT R

25.49 WILLIAMS, ROBERT R

40 WILLIAMS, ROBERT R

40 WIRTJERS, PATRICIA M LE

WIRTJERS, PATRICIA M LE

TEMPORARY ENTRANCE

CONSTRUCTION ACCESS

(25FT ASSUMED WIDTH) TO

UTILIZE GRASSED WATERWAY

ERODING BANK MAY WARRANT

ENCROACHING INTO CROP

GROUND TO MAINTAIN ACCESS

GRODAHL

WETLAND

IDALS CAL883432

30402-C2-EX-SITE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C2-10

C2-10 EXISTING SITE - WATERSHED

SCALE IN FEET

200 400

EXISTING WATERSHED

EXISTING 12" HDPE TILE (TYP)

C2-10

2-13-2025

24-30402

EXISTING SITE -

WATERSHED

JAT

HPT

CDR

CALHOUN COUNTY IOWA

270TH STREET

DU

RA

NT

A

VE

NU

E

APPROXIMATE PARCEL LINE (TYP)

GRODAHL FARMS INC

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100

FP100FP100FP100

FP100FP100FP100FP100FP100FP100

FP

FP

FP

FP

FP

FP

FP

FP

FP

FP

FP

FP100 FP100 FP100

8'

GRODAHL

WETLAND

IDALS CAL883432

30402-C3-SITE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C3-10

C3-10 SITE PLAN

SCALE IN FEET

50 100

CONTAINMENT DIKE

TOP ELEV = 1183.0

6:1 SIDE SLOPES

EDGE OF FIELD (TYP)

TOP OF BANK (TYP)

PROPOSED CONTOUR (TYP)

EXISTING 12" HDPE TILE (TYP)

POTENTIAL EASEMENT AREA

APPROX. 6.34 ACRES

NORMAL POOL

ELEV = 1181.5

AREA = 2.35 ACRES

WATER CONTROL STRUCTURE

10' SUBMERGED BERM (TYP)

EXCAVATED AREA

AUXILIARY SPILLWAY

INSTALL 2,750 SF OF TIED CONCRETE BLOCK MATTING,

2 FT DIMENSIONAL OVERRUN INCLUDED FOR

MANUFACTURE VARIABILITY

WEST FORK CAMP CREEK

UNSTABLE BANK

FAILED TILE OUTLET

MODELED FLOODPLAIN EXTENTS

SPOIL WASTING AREA.

ALL SPOIL MUST BE PLACED

OUTSIDE OF FLOODPLAIN.

C3-10

2-13-2025

24-30402

SITE PLAN

JAT

HPT

CDR

CALHOUN COUNTY IOWA

DIVERTED TILE

SEE SHEET C3-20

PRINCIPAL SPILLWAY

SEE SHEET C3-21

BERM STORAGE AREA

ELEV = 1182.4

SLOTTED RISER

SEE SHEET C3-21

TEMPORARY WORK LIMITS

APPROXIMATE PARCEL

LINE (TYP)

Site Characteristics:

Consultant ISG, INC.

Project ID 23-30402

Landowner(s) GRODAHL FARMS

Preliminary or Final Design FINAL

Drainage Area (Tile Drained) 197 Acres

Wetland Pool Area 2.35 Acres

Deep Water Area (>3 ft deep) 0.02 Acres

Normal Pool Elevation / Primary Spillway Elevation

1181.50 Feet

Average Pool Depth 2.0 Feet

Maximum Pool Depth 3.5 Feet

Pool Storage 3.81 Acre-Feet

Berm Top Elevation 1183.00 Feet

Berm Storage 6.10 Acre-Feet

Length of Berm 668.0 Feet

Auxiliary Spillway Elevation 1181.90 Feet

Auxiliary Spillway Width 20 Feet

Weir Width N/A Feet

Drop Height (Primary Spillway Elevation – Stilling

Basin Lowest Elevation) N/A Feet

Height of Dam (Berm Elevation – Stilling Basin

Lowest Elevation)

5.00 Feet

Dike Classification IV

Stilling Basin Length N/A Feet

Time of Concentration 1.28 Hours

Weighted Runoff Curve Number 78 -----

25-year Storm Design Flow 30.36 CFS

100-year Storm Design Flow 46.35 CFS

100-year Flood Surf. Elevation (River) 1183.908 Feet

Estimated Sediment Storage 48 Years

Total Easement Area 5.98 Acres

1.6

.5

23.55

0.65

GRODAHL FARMS INC

0+001+002+003+004+005+006+00

118611871188

1191119211931194 119611971198

119611971198

11811183

0+00

.5

.5

0+50

.3

.8

1+00

.5

.1

1+50

.8

.5

2+00

.8

.8

2+50

.6

.2

3+00

.9

.5

3+50

.8

.9

4+00

.0

.2

4+50

.5

.6

5+00

.5

.9

5+50

.3

.3

6+00

.7

.6

6+50

INSTALL 15" CMP

WITH FES & ANIMAL GUARD

20 LF @ 0.69%

STA: 0+00 TO 0+20

INSTALL 12" DUAL WALL HDPE

581 LF @ 0.69%

STA: 0+20 TO 6+01

ST

A

= 0 +0

0.0

EL

EV

.50

ST

A

= 0 +2

0.0

EL

EV

.64

ST

A

= 6 +0

0.9

EL

EV

.65

NOTE:

XXXX.X - EXISTING GROUND L

XXXX.XX - PROPOSED TILE GRADE

C

EXISTING GROUND

NWL=1181.5'

ASTM CLASS 2 BACKFILL

STA: 2+00 TO 4+40

DISSIMILAR PIPE CONNECTION

GRODAHL

WETLAND

IDALS CAL883432

30402-C3-PROFILE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C3-20

C3-20 INLET PLAN & PROFILE

SCALE IN FEET

50 100

EXISTING 12" HDPE TILE (TYP)

FIELD VERIFY LOCATION AND DEPTH;

CONNECT TO EXISTING TILE AND CAP

DOWNSTREAM, INSTALL 12" CPT @0.69%MIN

OUTLET ELEV = 1182.5

10 TN OF RIPRAP

(SUDAS 9040.110)

SEE SHEET C0-30

C3-20

2-13-2025

24-30402

INLET PLAN &

PROFILE

JAT

HPT

CDR

CALHOUN COUNTY IOWA

GRODAHL FARMS INC

8'

0+001+001+73

118611871188

1191119211931194 119611971198

11811183

0+00

.9

.0

0+50

.3

.5

1+00

.6

.1

1+50

.7

.7

2+00

.5

INSTALL 12" CMP

WITH FES & ANIMAL GUARD

20 LF @ 1.16%

STA: 0+00 TO 0+20

INSTALL 10" CORRUGATED

POLYETHYLENE PIPE (NON-PERF)

153 LF @ 1.16%

STA: 0+20 TO 1+73

ST

A

= 0 +0

EL

EV

.00

ST

A

= 0 +2

EL

EV

.23

ST

A

= 1 +7

EL

EV

.00

NOTE:

XXXX.X - EXISTING GROUND L

XXXX.XX - PROPOSED TILE GRADE

C

WCS

R=1184.50 I=1177.55 (10'') I=1177.55 (10'')

SLOTTED 18" CMP

RISER

R=1181.00 I=1178.00 (10'')

1183.00

8.0

1178.50

NWL=1181.5'

TRENCH DAM

WATER

LEVEL

04/2024 1176.83

DISSIMILAR PIPE

CONNECTION

GRODAHL

WETLAND

IDALS CAL883432

30402-C3-PROFILE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C3-21

C3-21 OUTLET PLAN & PROFILE

SCALE IN FEET

50 100

TOP OF BANK (TYP)

INSTALL 5TN CLASS E RIPRAP

(SEE SHEET C0-32)

3-CHAMBER, 10"x6' WATER CONTROL STRUCTURE

WITH 54" DIA CMP SLEEVE WITH GRATED LID

CMP RIM ELEV = 1185.0

SLOTTED 18" CMP RISER

RIM ELEV = 1181.0

INVERT ELEV = 1178.0

SEE SHEET C0-30

TRENCH DAM

SEE SHEET C0-32

C3-21

2-13-2025

24-30402

OUTLET PLAN &

PROFILE

JAT

HPT

CDR

GRODAHL FARMS INC

1178 8'

119211931194

1196119711981199 1201120212031204

82 11

83 11 84 11

86 11 87 11

88 11 89 11

1181 1180

11811182

-8:1

-6:

-0.2%

-1.1%

-3.

8%

-2.2%

-4.

1%

-5.

3%

-2.2%

-9.3%

-4:1

-4:1

-6:1

-5:1

-2.

5%

10'

1.9

1.0

1.0

2.5

GRODAHL

WETLAND

IDALS CAL883432

30402-C4-GRADE

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

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JE

C

TS

\3

P R

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0-

9\

ID

AL

S

C

AL

B-

C

AL

H O

U N

C O

U N

TY

IA

\3

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2- C

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D

W G

S

AV

ED

B

Y:

H

AL

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.T O

M S

SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C4-10

C4-10 GRADING PLAN

SCALE IN FEET

50 100

CONTAINMENT DIKE

TOP ELEV = 1183.0

6:1 SIDE SLOPES

EDGE OF FIELD (TYP)

TOP OF BANK (TYP)

EXISTING CONTOUR (TYP)

PROPOSED CONTOUR (TYP)

BERM STORAGE AREA

ELEV = 1182.4

NORMAL POOL

ELEV = 1181.5

10' SUBMERGED BERM (TYP)

EXCAVATED AREA

WEST FORK CAMP CREEK

SPOIL WASTING AREA.

C4-10

2-13-2025

24-30402

GRADING PLAN

JAT

HPT

CDR

TEMPORARY WORK LIMITS

GRODAHL FARMS INC

1178 8'

871188

11891191

1181 1180

GRODAHL

WETLAND

IDALS CAL883432

30402-C4-CUTFILL

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

R O

JE

C

TS

\3

P R

O J\

0-

9\

ID

AL

S

C

AL

B-

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H O

U N

C O

U N

TY

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\3

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D \P

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2- C

4- C

U

TF

IL

L.

D W

G S

AV

ED

B Y:

H

AL

EY

.T

O M

S

SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C4-20

C4-20 CUT - FILL

SCALE IN FEET

50 100

CONTAINMENT DIKE

TOP ELEV = 1183.0

6:1 SIDE SLOPES

EDGE OF FIELD (TYP)

TOP OF BANK (TYP)

NORMAL POOL

ELEV = 1181.5

AREA = 2.35 ACRES

10' SUBMERGED BERM (TYP)

EXCAVATED AREA

WEST FORK CAMP CREEK

SPOIL WASTING AREA.

C4-20

2-13-2025

24-30402

CUT - FILL

JAT

HPT

CDR

CALHOUN COUNTY IOWA

LEGEND

SYMBOL DESCRIPTION MINIMUM ELEVATION MAXIMUM ELEVATION VOLUME

AREA OF FILL 0.10 2.67 3,122 CY

BALANCE LINE -0.10 0.10 567 CY

AREA OF CUT -3.18 -0.10 3,089 CY

TOP OF BERM

ELEVATIONTEMPORARY WORK LIMITS

G

RO

DA

HL

F

AR

M S

IN

C

W

IR

TJ

ER

S, P

AT

RI

CI

A

M L

E

8'

1181 1182

0 1 2 3 4 5 5

118111

21179

SE

CT

IO

N

A- A

SE

CT

IO

N

A- A

SECTION A-A

-0+50 0+00

.3

0+50

.6

.1

1+00

.4

.1

1+50

.9

.0

2+00

.0

.9

2+50

.3

.7

3+00

.7

.4

3+50

.7

.1

4+00

.6

.8

4+50

.2

.6

5+00

.4

5+50 6+00

10' 10' 8'

EXISTING GROUND

PROPOSED GROUND

6:1

4:1

6:1

6:14:1

NWL=1181.5'

1181.0'1181.0'

1183.0'

NOTE:

XXX.X - EXISTING GROUND

XXX.XX - PROPOSED GROUND

GRODAHL

WETLAND

IDALS CAL883432

30402-C4-CROSS SECTION

DATE

REVISION SCHEDULE

DESCRIPTION BY

SHEET

TITLE

PROJECT

WITHOUT PRIOR WRITTEN CONSENT.

INC. AND MAY NOT BE USED, COPIED OR DUPLICATED

THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

PROJECT NO.

FILE NAME

DESIGNED BY

ORIGINAL ISSUE DATE

DRAWN BY

CLIENT PROJECT NO.

REVIEWED BY

D W

G L

O C

AT

IO

N

S:

\P

R O

JE

C

TS

\3

P R

O J\

0-

9\

ID

AL

S

C

AL

B-

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H O

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TY

IA

\3

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\3

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D \P

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2- C

4- C

R O

SS

S

EC

TI

O N

.D W

G S

AV

ED

B Y:

H

AL

EY

.T

O M

S

SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

SCALE IN FEET

50 100

---- ---- C4-30

C4-30

2-13-2025

24-30402

CALHOUN COUNTY IOWA

CROSS SECTION

JAT

HPT

CDR

WES

T F

ORK C

AM

P C

REE

K