3-BRE911312B_Final Plans 03-06-2024.pdf

STATE OF IOWA

BREMER COUNTY, IA

ENGINEER

SHIVE-HATTERY, INC

ATTN: DAN JENSEN

4125 WESTOWN PARKWAY, SUITE 100

WEST DES MOINES, IOWA 50266

PH: (515) 223-8104

FX: (515) 223-0622

SITE ADDRESS:

2160 230TH ST WAVERLY, IA 50677

CONTACT INFORMATION:

IOWA DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP

SARA SMITH, PE.,PHD

502 E. 9TH STREET

DES MOINES, IA, 50319

PH: (515) 422-7335

SARA.SMITH@IOWAAGRICULTURE.GOV

BRE911312B BREMER COUNTY WETLAND

IDALS

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PROJECT DRAWING COORDINATE SYSTEM:

HORIZONTAL: NAD83 IOWA STATE PLANE NORTH ZONE (1401)

VERTICAL: NAVD88

UNITS: U.S. SURVEY FEET

PAGES, SHEETS OR DIVISIONS COVERED BY THIS SEAL:

My License Renewal Date is: DECEMBER 31, Printed or typed name:

License Number:

Signature: Date

I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT DESCRIBED

BELOW WAS PREPARED BY ME OR UNDER MY DIRECT PERSONAL

SUPERVISION AND THAT I AM A DULY LICENSED PROFESSIONAL ENGINEER

UNDER THE LAWS OF THE STATE OF IOWA.

ALL SHEETS

DANIEL JENSEN

25063

CIVIL ENGINEER

NRCS NEM PART 505 CERTIFICATION

THE SIGNING PROFESSIONALS HEREBY CERTIFY

THAT, TO THE BEST OF THEIR PROFESSIONAL

KNOWLEDGE, JUDGEMENT, AND BELIEF, THESE

PLANS MEET APPLICABLE NRCS STANDARDS.

IO

W A D E P A R T M EN T O F

AGR

I C U L T U R E & L A N D S T EWA R D

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IP

PROJECT

LOCATION

BREMER COUNTY

HIGHWAY 3 (230TH ST)

CONSTRUCTION

ENTRANCE

LANDOWNERS

PRIMARY:

STEVEN TEISINGER

PH: (319) 830-6511

SECONDARY:

JANICE ROGERS AND KEVIN KIRCHOFF

PH: (319) 984-9270

AND (319) 404-3333

WAVERLY

TRIPOLI

PLAINFIELD SUMNER

READLYN

DENVER

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Sheet List Table Sheet Number Sheet Title

C000 COVER SHEET

C001 PROJECT QUANTITIES & NOTES

CD01 EXISTING CONDITIONS AND REMOVALS PLAN

C201 OVERALL SITE PLAN

C202 WETLAND GRADING PLAN

C203 CUT FILL PLAN

C301 WETLAND BERM PROFILE

C302 OUTLET CHANNEL PLAN AND PROFILE

C303 WETLAND TILE PLAN AND PROFILE

C304 DRAWDOWN STUCTURE PLAN & PROFILE

C401 SHEET PILE WEIR

C501 CONSTRUCTION DETAILS

C502 CONSTRUCTION DETAILS

C503 CONSTRUCTION DETAILS

C601 SEEDING PLAN

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2 MILES

QUARTER SECTION RUN

THE ENGINEERING JOB CLASS IS IV

03-06-2024

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ESTIMATED QUANTITIES:

GENERAL NOTES:

1. THE LOCATIONS OF UTILITY MAINS, STRUCTURES AND SERVICE

CONNECTIONS PLOTTED ON THIS DRAWING ARE APPROXIMATE ONLY AND

WERE OBTAINED FROM RECORDS MADE AVAILABLE TO SHIVE-HATTERY,

INC. THERE MAY BE OTHER EXISTING UTILITY MAINS, STRUCTURES AND

SERVICE CONNECTIONS NOT KNOWN TO SHIVE-HATTERY, INC. AND NOT

SHOWN ON THIS DRAWING. THE VERIFICATION OF EXISTENCE OF, AND THE

DETERMINATION OF THE EXACT LOCATION OF, UTILITY MAINS,

STRUCTURES AND SERVICE CONNECTIONS SHALL BE THE RESPONSIBILITY

OF THE CONSTRUCTION CONTRACTOR(S).

2. IOWA CODE 480, UNDERGROUND FACILITIES INFORMATION, REQUIRES

VERBAL NOTICE TO IOWA ONE-CALL 1-800-292-8989, NOT LESS THAN 48

HOURS BEFORE EXCAVATING, EXCLUDING WEEKENDS AND HOLIDAYS.

3. THE MEANS OF THE WORK AND THE SAFETY OF THE CONTRACTOR'S

EMPLOYEES ARE SOLELY THE RESPONSIBILITY OF THE CONTRACTOR.

4. NO WORK SHALL BE PERFORMED BEYOND THE PROJECT LIMITS WITHOUT

PRIOR AUTHORIZATION FROM THE OWNER'S REPRESENTATIVE.

5. REPLACE ANY PROPERTY MONUMENTS REMOVED OR DESTROYED BY

CONSTRUCTION. MONUMENTS SHALL BE SET BY A LAND SURVEYOR

REGISTERED TO PRACTICE IN THE STATE OF IOWA.

6. ALL DEBRIS AND TRASH ENCOUNTERED DURING CONSTRUCTION WITHIN

THE PROJECT LIMITS, OR DIRECTED BY THE ENGINEER, SHALL BE

PROPERLY DISPOSED OF.

7. CONTRACTOR IS RESPONSIBLE FOR ALL CONSTRUCTION DE-WATERING

THAT IS REQUIRED AT NO ADDITIONAL COST TO THE DIVISION.

8. REPAIR OR REPLACE DAMAGE TO EXISTING FACILITIES (TILE, UTILITIES,

FENCES, ETC.) DESIGNATED TO REMAIN, AT NO ADDITIONAL EXPENSE TO

THE OWNER. ALL AREAS DISTURBED BY CONSTRUCTION, INCLUDING

STAGING AREAS AND HAUL ROUTES, ARE TO BE REWORKED TO THEIR

EXISTING CONDITIONS AND SEEDED AT NO ADDITIONAL COST TO THE

DIVISION IF OUTSIDE OF PROJECT LIMITS AND NOT APPROVED BY

ENGINEER.

9. WORK WHICH DOES NOT CONFORM TO THE REQUIREMENTS OF THE

CONTRACT WILL BE CONSIDERED UNACCEPTABLE. UNACCEPTABLE WORK,

WHETHER THE RESULT OF POOR WORKMANSHIP, USE OF DEFECTIVE

MATERIALS, DAMAGE THROUGH CARELESSNESS OR ANY OTHER CAUSE,

FOUND TO EXIST PRIOR TO THE FINAL ACCEPTANCE OF THE WORK, SHALL

BE REMOVED AND REPLACED IN AN ACCEPTABLE MANNER, AS REQUIRED

BY THE OWNER AT THE CONTRACTOR'S EXPENSE.

10. WORK DONE CONTRARY TO THE INSTRUCTIONS OF THE OWNERS

REPRESENTATIVE, WORK DONE BEYOND THE LINES SHOWN ON THE PLANS

OR ANY EXTRA WORK DONE WITHOUT AUTHORITY WILL NOT BE PAID FOR.

11. A SHRINKAGE FACTOR OF 25% WAS ESTIMATED FOR THIS PROJECT. THE

CONTRACTOR SHALL MAKE CHANGES IN EARTHWORK AS NEEDED TO

ADJUST FOR INACCURACIES INHERENT WITH ESTIMATING THE SHRINKAGE

FACTOR. THESE CHANGES SHALL ONLY BE MADE AFTER CONSULTATION

AND APPROVAL BY THE ENGINEER AND DIVISION.

12. CONTOURS AND SPOT ELEVATIONS SHOWN ARE TO FINISHED GRADE.

13. THE CONTRACTOR SHALL KEEP ALL ROADS OPEN TO THROUGH TRAFFIC

AT ALL TIMES.

14. ALL WORK WITHIN THE PUBLIC RIGHT OF WAY SHALL BE COORDINATED

WITH THE GOVERNING AUTHORITY AND SHALL BE DONE IN ACCORDANCE

WITH THEIR STANDARDS.

15. SUBMIT MANUFACTURER'S CERTIFICATION AND MATERIAL DATA FOR ALL

MATERIALS DELIVERED TO THE PROJECT SITE AS REQUESTED BY THE

OWNERS REPRESENTATIVE.

16. CONSTRUCTION SURVEY STAKING WILL BE PAID FOR BY THE OWNER AND

PROVIDED BY THE ENGINEER. CONTROL POINTS WILL BE SET FOR USE

WITH GPS CONTROLLED GRADING, IF DESIRED. CONTRACTOR SHALL

PRESERVE STAKES TO THE EXTENT FEASIBLE. ANY RE-STAKING COSTS

WILL BE THE RESPONSIBILITY OF THE CONTRACTOR.

17. NEITHER SHIVE-HATTERY NOR IDALS GUARANTEE THIS PRACTICE WILL

HOLD A PERMANENT POOL OF WATER.

CULTURAL RESOURCES NOTE:

1. IF A CULTURAL RESOURCE IS IDENTIFIED

DURING CONSTRUCTION, STOP IMMEDIATELY

AND NOTIFY LOCAL NATURAL RESOURCES

CONSERVATION SERVICE OFFICE.

# ITEM DESCRIPTION QUANTITY UNITS

1 SITE STRIPPING & PREPARATION 1 LS

2 CROP DAMAGE 0 AC

3 STRUCTURE & CHANNEL SEEDING 2.5 AC

4 BUFFER SEEDING 6.3 AC

5 MOBILIZATION AND DEMOBILIZATION 1 LS

6 DRAIN TILE INVESTIGATION AND REMOVAL 5,603 LF

7 STEEL SHEET PILING 414 SF

8 EXCAVATION (GENERAL (P)) 6,552 CY

9 EARTHFILL (GENERAL (P)) 963 CY

10 EARTHFILL (GENERAL DAM (P)) 3,010 CY

11 EARTHFILL (DAM CORE (P)) 3,527 CY

12 EARTHFILL (SCARIFY AND RECOMPACT 12" LAYER OF WETLAND BOTTOM (P)): 3,432 CY

13 TOPSOIL PLACEMENT, 6 INCH 4,276 CY

14 TOPSOIL PLACEMENT, 12 INCH 3,122 CY

15 8" CORRURGATED POLYETHYLENE PIPE (PERFORATED) 521 LF

16 12" CORRUGATED PROFILE WALL (DUAL WALL) POLYETHYLENE PIPE 298 LF

17 18" CORRUGATED PROFILE WALL (DUAL WALL) POLYETHYLENE PIPE 2,343 LF

18 12" RISER INLET STRUCTURE, HICKENBOTTOM 1 EA

19 18" CMP DRAWDOWN STRUCTURE 1 EA

20 48" CMP WATER CONTROL STRUCTURE 1 EA

21 12" CMP DRAWDOWN WETLAND OUTLET PIPE 84 LF

22 15" CMP TILE OUTLETS (20 LF EACH) 1 EA

23 24" CMP TILE OUTLETS (20 LF EACH) 1 EA

24 RIP RAP 430 TON

25 2" CLEAN STONE 60 TON

26 CONCRETE GROUT 63 CY

27 POLLUTION CONTROL, SILT FENCE 120 LF

28 POLLUTION CONTROL, TYPE 4 RECP 385 SY

29 FENCE REMOVAL 1 LS

ESTIMATE REFERENCE NOTES:

PROJECT ID BRE911312B-FP ----- LENGTH OF BERM 2179 FEET

LANDOWNERS

TEISINGER, STEVE;

ROGERS, JANICE; &

KIRCHOFF, KEVIN

----- AUXILIARY SPILLWAY ELEVATION NONE FEET

PRELIMINARY OR FINAL DESIGN FINAL DESIGN ----- AUXILIARY SPILLWAY WIDTH NONE FEET

DRAINAGE AREA 409 (TILE); 23.9

(OVERLAND) ACRES WEIR WIDTH 20 FEET

WETLAND POOL AREA 8.0 ACRES DROP HEIGHT 3 FEET

DEEP WATER AREA (>3 FT DEEP) 0.2 ACRES STILLING BASIN LENGTH 30 FEET

NORMAL POOL ELEVATION 956.0 FEET TIME OF CONCENTRATION 0.46 HOURS

AVERAGE POOL DEPTH 1.5 FEET WEIGHTED RUNOFF CURVE

NUMBER 85 -----

MAXIMUM POOL DEPTH 4.1 FEET 25-YEAR STORM DESIGN FLOW 81 CFS

POOL STORAGE 11.8 ACRE-FEET 100-YEAR STORM DESIGN FLOW 116 CFS

BERM ELEVATION 958.25 FEET 100-YEAR FLOOD SURF. ELEVATION 956.65 FEET

BERM STORAGE 36.8 ACRE-FEET ESTIMATED SEDIMENT STORAGE 614 YEARS

TOTAL EASEMENT AREA 17.66 ACRES

NOTE: SEDIMENT STORAGE ESTIMATED FROM OVERLAND FLOW AREA.

ADDITIONAL SEDIMENTATION IS EXPECTED DURING FLOOD EVENTS THAT

WILL REDUCE THE SEDIMENT STORAGE LIFESPAN.

WETLAND DESIGN DATA:

ITEM # SPEC # DESCRIPTION

1 IA CS-001

SITE STRIPPING & PREPARATION : THIS ITEM SHALL BE CONSIDERED FULL COMPENSATION TO REMOVE ANY REMAINING TREES, STUMPS, AND BRUSH FROM WITHIN THE GRADING LIMITS, PROPOSED POOL LIMITS, AND ALONG THE CONSTRUCTION ACCESS ROUTE. SEE SHEET CD01. THIS ITEM ALSO INCLUDES THE REMOVAL AND PROPER OFF-SITE DISPOSAL OF ALL WASTE ENCOUNTERED. THE GRANULAR SURFACING AT THE CONSTRUCTION ENTRANCE IS INCLUDED IN THIS BID ITEM. MANAGEMENT OF THE STORM WATER POLLUTION PREVENTION PLAN IS INCLUDED IN THIS BID ITEM.

2 IA CS-001

CROP DAMAGE: THIS ITEM CONSISTS OF CROP DAMAGE THAT RESULTS FROM CONSTRUCTION ACTIVITIES. IT IS RECOMMENDED CONTRACTOR REMOVE CORN RESIDUE RATHER THAN KNOCK IT DOWN.

PAYMENT FOR CROP DAMAGE WILL BE MADE TO THE NEAREST 0.1 ACRE AS MEASURED BY THE ENGINEER OR THEIR REPRESENTATIVE. THE UNIT RATE FOR CROP DAMAGE WILL BE DETERMINED BY THE DIVISION NEAR THE COMPLETION OF CONSTRUCTION AND ADDED TO THE CONTRACT WITH A CHANGE ORDER. PAYMENT WILL BE MADE TO CONTRACTOR WHO WILL PAY LANDOWNER.

3 IA CS-006 STRUCTURE & CHANNEL SEEDING: THIS ITEM INCLUDES SEEDING FOR ALL EMBANKMENT AND TILE COVER BERM AREAS AND INCLUDES SEEDBED PREP, SEEDING, MULCHING, AND FERTILIZER.

4 IA CS-006 BUFFER SEEDING: THIS ITEM INCLUDES SEEDING FOR ALL AREAS ABOVE NORMAL POOL AND WITHIN EASEMENT BOUNDARY, EXCLUDING THOSE AREAS WHERE STRUCTURE SEEDING IS SPECIFIED. SEE

SEEDING PLAN. NO MULCH OR FERTILIZER SHALL BE APPLIED.

5 CS-008 MOBILIZATION AND DEMOBILIZATION: THIS ITEM SHALL BE CONSIDERED FULL COMPENSATION TO MOBILIZE AND DEMOBILIZE THE CONTRACTOR'S FORCES AND EQUIPMENT FOR THE PROJECT. ALL OTHER WORK NECESSARY TO COMPLETE THE PROJECT AS REPRESENTED HEREIN BUT NOT INCLUDED IN THE ITEMS LISTED BELOW SHALL BE INCIDENTAL TO THIS ITEM.

6 IA CS-009

DRAIN TILE INVESTIGATION AND REMOVAL: THIS ITEM INCLUDES THE EXPLORATORY EXCAVATIONS REQUIRED TO LOCATE AND REMOVE TILES SHOWN ON THE PLANS. THIS IS FULL COMPENSATION FOR

EXCAVATION, BACKFILLING, AND REMOVAL OF THE TILE TRENCHES.

7 IA CS-013 STEEL SHEET PILING: THIS ITEM INCLUDES PROCUREMENT AND INSTALLATION OF THE SHEET PILING AS DETAILED ON SHEET C401 INCLUDING FIELD WELDING, CUTTING, TRIMMING, WALER, BOLTS, NUTS, AND OTHER APPURTENANCES.

8 IA CS-021 EXCAVATION (GENERAL (P)): THIS ITEM INCLUDES THE EXCAVATION OF MATERIAL REQUIRED TO CONSTRUCT THE CORE TRENCH BELOW THE EXISTING GROUND LEVEL, AS DETAILED, ALONG THE

CENTERLINE OF THE DAM EMBANKMENT AS WELL AS ESTABLISHING POOL FINAL GRADE.

9 IA CS-023

EARTHFILL (GENERAL (P)): THIS ITEM INCLUDES THE AMOUNT OF MATERIAL REQUIRED TO CONSTRUCT THE SUBMERGED BERMS AND ADDITIONAL FILL TO BE PLACED OVER TILE COVER BERMS ALONG WITH TOPSOIL FILL IN AREAS OUTSIDE OF EASEMENT. COHESIVE MATERIAL FOUND DURING GENERAL GRADING AND COMPACTED LINER REMOVAL CAN BE USED FOR THESE AREAS. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR THIS EARTHFILL. SEE SHEET C201 AND C202 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. THE REQUIRED FILL INCLUDES A 25% SHRINKAGE FACTOR.

MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY.

10 IA CS-023

EARTHFILL (GENERAL DAM (P)): THIS ITEM INCLUDES THE EARTHFILL PLACEMENT AND COMPACTION NECESSARY TO CONSTRUCTION THE PORTION OF THE EMBANKMENT THAT IS NOT THE EMBANKMENT CORE. COHESIVE MATERIAL FOUND DURING GENERAL GRADING AND COMPACTED LINER CAN BE USED FOR THIS AREA. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR FILL IN THESE AREAS.

SEE SHEET C201 AND C202 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. THE REQUIRED FILL INCLUDES A 25% SHRINKAGE FACTOR. MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY.

11 IA CS-023

EARTHFILL (DAM CORE (P)): THIS ITEM INCLUDES THE EARTHFILL PLACEMENT AND COMPACTION NECESSARY TO CONSTRUCT THE EMBANKMENT CORE WITHIN THE EMBANKMENT, INCLUDING THE CORE TRENCH. COHESIVE MATERIAL TAKEN FROM DESIGNATED BORROW AREA SHOULD BE USED FOR THIS AREA. SAND AND GRAVEL SHALL NOT BE USED FOR THIS AREA. SEE SHEET C201 AND C202 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. THE REQUIRED FILL INCLUDES A 25% SHRINKAGE FACTOR. MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED

IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY.

12 IA CS-023

EARTHFILL (SCARIFY AND RECOMPACT 12" LAYER OF WETLAND BOTTOM (P)): THIS ITEM INCLUDES SCARIFICATION AND LOOSENING OF A 12 INCH SURFACE LAYER OF SOIL ON THE WETLAND POOL BOTTOM, MOISTURE CONDITIONING, AND COMPACTION OF THE WETLAND BOTTOM TO FORM A SEAL. CONTRACTOR SHALL REMOVE ROCKS LARGER THAN 6 INCHES. NOTIFY ENGINEER IMMEDIATELY IF

SANDY SOILS ARE ENCOUNTERED. ITEM WILL BE PAID BASED ON PLAN QUANTITY.

13 IA CS-026 TOPSOIL PLACEMEN, 6 INCH: THIS ITEM INCLUDES THE STRIPPING, SALVAGE, AND STOCKPILE 6" OF EXISTING MATERIAL FROM ALL AREAS TO BE EXCAVATED OR DISTURBED EXCLUDING THE EMBANKMENT FOOTPRINT AND TILE TRENCH OUTSIDE OF THE EASEMENT. RESPREAD TOPSOIL IN ALL AREAS. ITEM WILL BE PAID BASED ON PLAN QUANTITY.

14 IA CS-026 TOPSOIL PLACEMENT. 12 INCH: THIS ITEM INCLUDES THE STRIPPING, SALVAGE, AND STOCKPILE 12" OF EXISTING MATERIAL FROM THE EMBANKMENT FOOTPRINT AND PROPOSED 18" TILE TRENCH OUTSIDE OF THE EASEMENT. RESPREAD 12" TOPSOIL IN ALL AREAS. ITEM WILL BE PAID BASED ON PLAN QUANTITY.

15 IA CS-046 8" CORRUGATED POLYETHYLENE PIPE (PERFORATED): THIS ITEM INCLUDES THE MATERIAL, EXCAVATION, PLACEMENT, JOINTING, AND BACKFILL OF THE 8" DUAL-WALL NON-PERFORATED HDPE DRAIN TILE.

SEE SHEET C202 FOR LENGTHS, LOCATIONS AND ELEVATIONS.

16 IA CS-046 12" CORRUGATED PROFILE WALL (DUAL WALL) POLYETHYLENE PIPE: THIS ITEM INCLUDES THE MATERIAL, EXCAVATION, PLACEMENT, JOINTING, AND BACKFILL OF THE 12" DUAL-WALL NON-PERFORATED

HDPE DRAIN TILE. SEE SHEET C202 FOR LENGTHS, LOCATIONS AND ELEVATIONS.

17 IA CS-046 18" CORRUGATED PROFILE WALL (DUAL WALL) POLYETHYLENE PIPE: THIS ITEM INCLUDES THE MATERIAL, EXCAVATION, PLACEMENT, JOINTING, AND BACKFILL OF THE 18" DUAL-WALL NON-PERFORATED

HDPE DRAIN TILE. SEE SHEET C202 FOR LENGTHS, LOCATIONS AND ELEVATIONS.

18 IA CS-046

12" RISER INLET STRUCTURE, HICKENBOTTOM: THIS ITEM INCLUDED COSTS FOR MATERIAL AND INSTALLATION OF A 12" HICKENBOTTOM INTAKE AND CONCRETE CONNECTION TO THE EXISTING TILE AS

DETAILED.

19 IA CS-051 18" CMP DRAWDOWN STRUCTURE: THIS ITEM INCLUDES COSTS FOR THE MATERIAL AND INSTALLATION OF 18 INCH ALUMINIZED CMP DRAWDOWN STRUCTURE RISER PIPE, TRASH RACK, AND BASE A

DETAILED.

20 IA CS-051 48" CMP WATER CONTROL STRUCTURE : THIS ITEM INCLUDES ALL LABOR, EQUIPMENT, AND MATERIALS FOR THE PLACEMENT OF THE 48" CONCRETE RISER STRUCTURE, FOOTING, STEEL, FABRICATION, PIPE CONNECTIONS, AND TRASH RACK.

21 IA CS-051 12" CMP DRAWDOWN WETLAND OUTLET PIPE: THIS ITEM INCLUDES ALL LABOR, EQUIPMENT, AND MATERIALS REQUIRED FOR THE EXCAVATION, PLACEMENT OF THE REINFORCED CONCRETE PIPE, SUPPORT BLOCKS, OUTLET CRADLE , AND BENTONITE BACKFILL.

22 IA CS-051 15" CMP TILE OUTLETS (20 LF EACH): THIS ITEM INCLUDES THE COSTS FOR MATERIAL, EXCAVATION, PLACEMENT, JOINTING, BEDDING, RODENT GUARDS, AND BACKFILLING OF THE 20 LF 8" CMP END SECTION FOR THE PROPOSED FIELD TILE OUTLET TO THE WETLAND. 15" CMP OUTLET SECTIONS ARE FOR 12 INCH TILES.

23 IA CS-051 24" CMP TILE OUTLETS (20 LF EACH): THIS ITEM INCLUDES THE COSTS FOR MATERIAL, EXCAVATION, PLACEMENT, JOINTING, BEDDING, RODENT GUARDS, AND BACKFILLING OF THE 20 LF 10" CMP END SECTION FOR THE PROPOSED FIELD TILE OUTLET TO THE WETLAND. 24" CMP OUTLET SECTIONS ARE FOR 18 INCH TILES.

24 IA CS-061 RIP RAP: THIS ITEM INCLUDES THE EXCAVATION AND PLACEMENT OF CLASS 'E' REVETMENT OVER GEOTEXTILE FABRIC AT THE LOCATIONS SHOWN ON THE PLANS. GEOTEXTILE FABRIC IS INCIDENTAL TO THIS ITEM. QUANTITY DETERMINATION IS BASED ON A UNIT WEIGHT OF 105 POUNDS PER CUBIC FOOT. PROVIDE WEIGHT TICKETS TO OWNER'S REPRESENTATIVE.

25 IA CS-061 2" CLEAN STONE: THIS ITEMS INCLUDES PROCUREMENT, PLACEMENT AND SPREADING OF 2 INCH CLEAN STONE AT THE CONSTRUCTION ENTRANCE AND TO RESTORE THE ACCESS DRIVE AFTER TILE

TRENCHING.

26 IA CS-062

CONCRETE GROUT: GROUT MIX SHALL BE AS SPECIFIED AND SHALL BE PLACED USING A CONCRETE PUMPER. GROUT SHALL FULLY ENCASE THE BOTTOM OF THE RIP RAP BUT NOT FULL TO THE TOP OF THE RIP RAP SO AS TO REDUCE THE ENERGY DISSIPATION CAPABILITIES. GROUT UPSTREAM OF THE WEIR SHALL BE SMOOTH FINISHED 1" BELOW THE CREST. GROUT SHALL ONLY BE PLACED IN THE

PRESENCE OF THE ENGINEER.

27 IA CS-005 POLLTION CONTROL, SILT FENCE: THIS ITEM INCLUDES PROCUREMENT AND INSTALLATION OF SILT FENCE DITCH CHECKS AS SHOWN ON THE PLANS AND AS DETAILED.

28 IA CS-005 POLLTION CONTROL, TYPE 2B RECP: THIS ITEM INCLUDES PROCUREMENT AND INSTALLATION OF TYPE 2B ROLLED EROSION CONTROL PRODUCT. INSTALLATION SHALL BE PER THE MANUFACTURER’S

RECOMMENDATIONS.

29 IA CS-001 FENCE REMOVAL: THIS ITEM INCLUDES REMOVAL AND PROPER OFF SITE DISPOSAL OF EXISTING FENCING AS SHOWN ON THE PLANS. PROTECT ALL PROPERTY MONUMENTS. CONTRACTOR SHALL REPLACE DAMAGED MONUMENTS AT NO ADDITIONAL COST. MONUMENTS MUST BE SET AND RECORDED BY A PROFESSIONAL LAND SURVEYOR.

HIGHWAY 3

955955

5 955

PROJECT GRADING LIMITS AND TILE INSTALLATION LIMITS

AREA = 6.9 ACRES ROW CROP. STRIP AND STOCKPILE 12

INCHES OF TOPSOIL IN EMBANKMENT FOOTPRINT AND

ALONG PROPOSED DIVERSION TILE LENGTH OUTSIDE THE

PROPOSED EASEMENT. STRIP 6 INCHES OF TOPSOIL IN

ALL OTHER DISTURBED AREAS. RESPREAD TOPSOIL

PRIOR TO SEED BED PREPARATION AND SEEDING.

LANDOWNER RESIDENCE. NO

CONTRACTOR TRAFFIC.

EXISTING FIELD

TILE. ABANDON

IN PLACE.

EXISTING STREAM

CENTERLINE

100-YEAR

FLOODPLAIN (FEMA)

LOCATE AND

REMOVE 50' OF

EXISTING TILE

LOCATE, CRUSH, AND BURY ALL TILE WITHIN PROPOSED

WETLAND POOL. FOR TILE RUNNING UNDER THE WETLAND BERM,

REMOVE TILE AND BACKFILL TRENCH WITH CLAY EXTENDING 10

FEET BEYOND THE FOOTPRINT OF THE BERM.

EXISTING

FENCE LINE

12 INCH PLASTIC TILE

INTERCEPT LOCATION.

IE = 959.54

APPROXIMATELY 250

TONS OF EXISTING RIP

RAP. LEAVE IN PLACE.

EXISTING 8 INCH PLASTIC

TILE OUTLET TO CREEK

LOCATE AND REMOVE

EXISTING TILE EXTENDING 10

FEET BEYOND THE

EMBANKMENT FOOTPRINT.

BACKFILL TRENCH WITH

COMPACTED CLAY IN LIFTS.

REMOVE AND DISPOSE OFF SITE

APPROPRIATELY 320 FEET OF

EXISTING FENCE. PROTECT

EXISTING PROPERTY MONUMENTS.

LOCATE EXISTING 5 INCH TILE FOR CONNECTIONS TO PROPOSED TILE WHERE

ELEVATIONS ALLOW. CRUSH AND BURY 10 FEET (MIN) TILE DOWNSTREAM AND

CAP UPSTREAM END OF TILE TO REMAIN. (TYP) 16 LOCATIONS ANTICIPATED.

WHERE ELEVATIONS DO NOT ALLOW, BRIDGE EXISTING TILE OVER OR UNDER

PROPOSED TILE AND MAINTAIN TILE DRAINAGE. COORDINATE WITH ENGINEER.

PROTECT ALL TILE TO REMAIN IN PLACE.

CONTRACTOR RESPONSIBLE FOR REMAIN OF

ANY DAMAGE CAUSED BY CONSTRUCTION AT

NO ADDITIONAL COST TO THE DIVISION.

EXISTING 12 INCH PLASTIC TILE

EXISTING 12 INCH

CONCRETE TILE

EXISTING 12 INCH

CONCRETE TILE

NORTH

A B C D E F

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PROPERTY LINE (APPROX)

EXISTING CONTOUR - MAJOR

EXISTING CONTOUR - MINOR

LEGEND

SURVEY NOTES:

1. LIMITED TOPOGRAPHIC SURVEY COMPLETED BY SHIVE-HATTERY ON

NOVEMBER 3, 2021.

2. SUPPLEMENTAL EXISTING SURFACE INFORMATION SHOWN WAS

BASED ON LIGHT DETECTION AND RANGING (LIDAR) INFORMATION

FROM IOWA DNR (2020).

3. CONTRACTOR SHALL VERIFY CONTROL AND BASE SURFACE PRIOR

TO CONSTRUCTION AND COORDINATE WITH ENGINEER.

COORDINATE SYSTEM AND DATUM:

HORIZONTAL DATUM - NAD83, IOWA STATE PLANE, NORTH ZONE

VERTICAL DATUM - NAVD88

TILE INFORMATION

EXISTING TILE INFORMATION IS APPROXIMATE AND WAS PROVIDED BY

THE LANDOWNER. LIMITED TILE INVESTIGATION WAS COMPLETED ON

NOVEMBER 3, 2021 AND WAS INCORPORATED INTO THESE DRAWINGS.

EXISTING DRAIN TILE

EXISTING FENCE

SOIL BORING SB

EASEMENT BOUNDARY

100-YEAR FLOODPLAIN

SOILS NOTES:

1. STRIP AND STOCKPILE 12 INCHES OF TOPSOIL IN EMBANKMENT

FOOTPRINT AND ALONG PROPOSED DIVERSION TILE LENGTH OUTSIDE

THE PROPOSED EASEMENT. STRIP 6 INCHES OF TOPSOIL IN ALL OTHER

DISTURBED AREAS. RESPREAD ALL TOPSOIL IN DISTURBED AREAS

PRIOR TO SEED BED PREPARATION AND SEEDING IN STRIPPED AREAS.

2. LIMITED SOIL TEST PITS WERE COMPLETED BY SHIVE-HATTERY ON

NOVEMBER 3, 2021. PITS CONSISTED OF OPEN EXCAVATIONS WITH A

BACKHOE EXTENDING TO A DEPTH OF APPROXIMATELY 6 FEET.

3. SOILS CONSIST OF A SURFACE LAYER OF DARK ORGANIC TOPSOIL

FOLLOWED BY A CLAY LAYER. THE CLAY LAYER WAS OBSERVED DOWN

TO DEPTHS OF ABOUT 3 FEET. BELOW THE CLAY A POROUS SAND

LAYER WAS OBSERVED.

4. EXCAVATION WITHIN THE POOL SHALL NOT EXTEND INTO THE SAND

LAYER AND A MINIMUM OF 1 FOOT OF SCARIFIED AND RECOMPACTED

CLAY SHALL REMAIN ON THE ENTIRE EXCAVATION FOOTPRINT.

EXCAVATION DEPTHS SHALL NOT EXCEED 2 FEET BELOW GROUND

WITHIN THE POOL AREA EXCEPT WHERE NOTED.

5. NOTIFY ENGINEER IMMEDIATELY IF SAND IS ENCOUNTERED IN LARGE

QUANTITIES. GRADING MAY REQUIRE MODIFICATION IN THE FIELD

BASED ON SOIL CONDITIONS. COORDINATE WITH THE ENGINEER.

0+00

1+

2+

3+

4+

5+

963.83 964.08

964.11 963.57

963.58 963.21

963.28

964.83

964.73

964.05 964.11 963.96

964.17

964.37

964.09

230TH ST

9600+

1+

2+00

3+00

4+

5+00

5+

0+00

1+00

2+00 3+00

4+00

5+00

5+30.64

951.00

951.71

953.56

953.59

953.61

953.66 953.68

953.76

953.73

953.76

953.81

954.19 953.82953.85

953.91

953.91

953.96

953.95 953.96 953.98

953.98

957 956

955953954956

TILE INTERCEPT LOCATION

12 INCH HDPE TILE

IE = 959.54

EXISTING RIP RAP

LEAVE IN PLACE

LOCATE APPROXIMATELY 15 EXISTING FIELD TILE AND TIE

IN TO NEW MAIN WHERE FEASIBLE. BREAK AND CAP/PLUG

DOWNSTREAM TILE APPROXIMATELY 10 FEET BELOW

CONNECTION POINT. BRIDGE OR PASS UNDER EXISTING

TILE WHERE CONNECTIONS ARE NOT PRACTICAL.

PROTECT ALL FIELD TILE

PROPOSED TO REMAIN.

REMOVE 50 LF OF TILE

DOWNSTREAM OF DIVERSION. PLUG

UPSTREAM END OF TILE TO REMAIN

10 FEET OF TILE REMOVAL

AND PLUG. (TYP.)

100-YEAR

FLOODPLAIN (FEMA)

LANDOWNER RESIDENCE - NO CONSTRUCTION

EQUIPMENT TRAFFIC.

PLACE 30 TONS OF 2 INCH CLEAN STONE

AFTER TILE BACKFILL. MARK TILE WITH 6

FOOT TEE POSTS ON BOTH SIDES OF DRIVE.

EASEMENT BOUNDARY

ACCESS ROUTE FROM MIDWAY AVE. COORDINATE

WITH OWNER AND ADJACENT LANDOWNER. PLACE 30

TONS OF 2 INCH CLEAN STONE TO STABILIZE ACCESS

ENTRANCE AT MIDWAY DRIVE.

PLACE 115 TONS OF CLASS E RIP RAP 2' THICK OVER

GEOTEXTILE. EXCAVATE BELOW GRADE AND PLACE SO

FINISH SURFACE MATCHED EXISTING GRADE. TAMP RIP

RAP WITH EXCAVATOR BUCKET TO LOCK INTO PLACE.

12" TILE OUTLET SECTION, 20 LF OF 15 INCH CMP. IE = 950.5

STABILIZE WITH 15 TONS CLASS E RIP RAP OVER GEOTEXTILE.

EXCAVATE BELOW GRADE AND PLACE SO FINISH SURFACE

MATCHED EXISTING GRADE. TAMP RIP RAP WITH EXCAVATOR

BUCKET TO LOCK INTO PLACE.

NORMAL WATER LEVEL

ELEV: 956.00

AREA = 8.0 ACRES

PROPOSED 18 INCH DUAL

WALL HDPE TILE

LENGTH = 2343 LF

SLOPE= 0.11%

18 INCH TILE OUTLET AT NWL

20 LF OF 24" CMP

INVERT = 957.00

WETLAND AND TILE COVER GRADING LIMITS.

TOP WIDTH = 10 FEET

SIDE SLOPES = 6 TO 1

MAINTAIN 3.0 FEET OF COVER (MIN) OVER TILE.

INTERIOR BERM

ELEV: 955.50

TOP WIDTH = 20 FEET

LOCATE AND CONNECT

EXISTING TILE IF

FEASIBLE.

INSTALL 12 INCH

HICKENBOTTOM INTAKE.

TILE INVERT = 951.0

ACCESS ROUTE

- COORDINATE WITH OWNERFENCELINE

DRAINAGE WATERWAY 10' BOTTOM. GRADE

TO DRAIN TO PROPOSED HICKENBOTTOM

INTAKE.

SHEET PILE OUTLET STRUCTURE.

DROP HEIGHT = 3 FEET

CREST WIDTH = 20 FEET

CREST ELEVATION = 956.00

TOTAL WIDTH = 46 FEET

EXISTING 8 INCH PLASTIC

TILE. ABANDON IN PLACE.

INSTALL 300 LF 12 INCH DUAL

WALL HDPE. DRAIN TO CREEK.

DRAWDOWN

STRUCTURE INTAKE.

SEE DETAIL

WATER CONTROL

STRUCTURE. SEE DETAIL.

WETLAND BERM

ELEVATION = 958.25

TOP WIDTH = 12 FEET

SIDE SLOPE = 4 TO 1

10' WIDE WAVE BENCH

AT NWL. SEE DETAIL.

5% MAXIMUM SLOPE

10' WIDE WAVE BENCH

AT NWL. SEE DETAIL.

5% MAXIMUM SLOPE

INSTALL 521 LF 8 INCH PERFORATED

TILE ALONG WATERWAY TO EDGE OF

EASEMENT. TIE INTO PROPOSED 12

INCH TILE OUTLET WITH TEE.

SCARIFICATION AND RECOMPACTION. EXCAVATION LIMITED TO

APPROXIMATELY 2.0 FEET EXCEPT AT DRAWDOWN STRUCTURE.

DEEPLY (12" MIN) SCARIFY, MOISTURE CONDITION, AND

RECOMPACT EXCAVATION AREA WITH MINIMUM 1' OF SUITABLE

CLAY MATERIAL. WHERE SAND IS ENCOUNTERED IN LARGE

QUANTITIES, OVEREXCAVATE AND REPLACE/RECOMPACT WITH

SUITABLE CLAY MATERIAL. COORDINATE WITH ENGINEER.

SILT FENCE

DITCH CHECKS.TYPE 4 RECP

INTERIOR CHANNEL -

GRADE TO DRAIN ETIRE

WETLAND TO

DRAWDOWN STUCTURE

PLACE 100 TONS OF CLASS E RIP RAP 2' THICK

OVER GEOTEXTILE. EXCAVATE BELOW GRADE

AND PLACE SO FINISH SURFACE MATCHED

EXISTING GRADE. TAMP RIP RAP WITH

EXCAVATOR BUCKET TO LOCK INTO PLACE.

GROUTED CLASS E RIP RAP.

60 TONS (15 CY GROUT) UPSTREAM

100 TONS (48 CY GROUT) DOWNSTREAM

SEE C302

CAP TILE AND PLACE T POST

MARKER AT END OF TILE

EXISTING CONTOUR - MAJOR

EXISTING CONTOUR - MINOR

EXISTING STREAM

NORTH

DESCRIPTION

TOP OF DAM ELEVATION

NORMAL WATER ELEVATION

MAJOR CONTOUR

MINOR CONTOUR

PROPOSED DUAL WALL TILE

EXISTING TILE

WATER LEVEL CONTROL STRUCTURE

A B C D E F

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RIP RAP

LEGEND

DESCRIPTION

100 - YEAR FLOODPLAIN

TILE INVESTIGATION AND REMOVAL

FENCELINE

SITE ACCESS

DESCRIPTION

0+

1+

2+00

3+00

0+00

1+00

2+00 3+00

4+00

5+00

5+30.64

951.00

951.71

953.56

953.59

953.61

953.66 953.68

953.76

953.73

953.76

953.81

954.19

953.82953.85

953.91

953.91

953.96

953.95 953.96 953.98

953.98

957 956

955953954956

NORMAL WATER LEVEL

ELEV: 956.00

AREA = 8.0 ACRES

PROPOSED 18 INCH DUAL

WALL HDPE TILE

LENGTH = 2363 LF

SLOPE= 0.11%

18 INCH TILE OUTLET AT NWL

20 LF OF 24" CMP

INVERT = 957.00

WETLAND AND TILE COVER GRADING LIMITS.

TOP WIDTH = 10 FEET

SIDE SLOPES = 6 TO 1

MAINTAIN 3.0 FEET OF COVER (MIN) OVER TILE.

INTERIOR BERM ELEV: 955.50

TOP WIDTH = 20 FEET

LOCATE AND CONNECT

EXISTING TILE IF FEASIBLE.

INSTALL 12 INCH HICKENBOTTOM

INTAKE. TILE INVERT = 951.0

ACCESS ROUTE -

COORDINATE WITH OWNER

FENCELINE

DRAINAGE WATERWAY 10' BOTTOM. GRADE TO

DRAIN TO PROPOSED HICKENBOTTOM INTAKE.

SHEET PILE OUTLET STRUCTURE.

DROP HEIGHT = 3 FEET

CREST WIDTH = 20 FEET

CREST ELEVATION = 956.00

TOTAL WIDTH = 46 FEET

EXISTING 8 INCH PLASTIC

TILE. ABANDON IN PLACE.

INSTALL 300 LF 12 INCH DUAL

WALL HDPE. DRAIN TO CREEK.

DRAWDOWN STRUCTURE INTAKE

- SEE DETAIL

WATER CONTROL STRUCTURE.

- SEE DETAIL.

WETLAND BERM

ELEVATION = 958.25

TOP WIDTH = 12 FEET

SIDE SLOPE = 4 TO 1

10' WIDE WAVE BENCH AT NWL

SEE DETAIL. 5% MAXIMUM SLOPE

10' WIDE WAVE BENCH

AT NWL. SEE DETAIL.

5% MAXIMUM SLOPE

INSTALL 525 LF 8 INCH PERFORATED TILE ALONG

WATERWAY TO EDGE OF EASEMENT. TIE INTO

PROPOSED 12 INCH TILE OUTLET WITH TEE.

SCARIFICATION AND RECOMPACTION. EXCAVATION LIMITED TO APPROXIMATELY 2.0 FEET

EXCEPT AT DRAWDOWN STRUCTURE. DEEPLY (12" MIN) SCARIFY, MOISTURE CONDITION,

AND RECOMPACT EXCAVATION AREA WITH MINIMUM 1' OF SUITABLE CLAY MATERIAL.

WHERE SAND IS ENCOUNTERED IN LARGE QUANTITIES, OVEREXCAVATE AND

REPLACE/RECOMPACT WITH SUITABLE CLAY MATERIAL. COORDINATE WITH ENGINEER.

SILT FENCE DITCH CHECKS.

TYPE 2B RECP

INTERIOR CHANNEL - GRADE TO

DRAIN ENTIRE WETLAND TO

DRAWDOWN STRUCTURE

PLACE 100 TONS OF CLASS E RIP RAP 2' THICK OVER

GEOTEXTILE. EXCAVATE BELOW GRADE AND PLACE SO

FINISH SURFACE MATCHED EXISTING GRADE. TAMP RIP RAP

WITH EXCAVATOR BUCKET TO LOCK INTO PLACE.

GROUTED CLASS E RIP RAP.

60 TONS (15 CY GROUT) UPSTREAM

100 TONS (48 CY GROUT) DOWNSTREAM

- SEE C302

WHERE EXCAVATION EXCEEDS 2 FEET, CARE SHOULD BE

TAKEN TO MAINTAIN CLAY BOTTOM OF WETLAND. IF SAND IS

ENCOUNTERED, CONTRACTOR SHALL OVEREXCAVATE 2 FEET

AND REPLACE WITH SUITABLE CLAY MATERIAL AND

COMPACT. COORDINATE WITH ENGINEER.

A B C D E F

A B C D E F

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NORTH

8,900.42 sf

0+00

1+

2+

963.83

0+

1+00

2+00

2+36.29

0.05

0.53

1.58

2.42

2.59

0.62

1.48

1.90

1.58

0.02

1.95

1.89

0.24

-1.84

-2.18

-2.75

-1.26

1.46

2.94

-2.81

-1.95

3.62

-0.21

-2.93

-1.63

-0.45

-0.03

3.99

-1.08

-1.15

-0.26

-1.02

-1.19

-1.80

4.04

-1.67

-1.27

-0.58

-1.66

3.86

-1.48

-0.70

-1.40

3.63

-0.90

-1.46

-0.81

-0.90

-0.42

-1.09

3.41

-1.12

-1.06

-0.78

-1.35

-0.53

0.34

-0.55

-0.52

3.32

-0.82

-0.87

-1.17

-0.37

0.64

-0.34

-0.51

3.17

-1.01

-1.14

-1.00

-0.90

0.14

-0.22

2.79

-1.30

-0.77

-1.18

-1.23

-1.03

-0.91

5.30

2.61

-1.47

-1.77

-1.67

-1.29

3.96

1.90

-0.98

1.94

-1.03

2.33

2.27

2.15

1.82

-0.58 -0.80 -1.19 -1.39 -1.36 -1.00 -1.24 -1.29 -1.65

2.38

0.38

0.62

0.92

0.22

0.16

-0.02

0.22

0.18

0.48

-1.44

1.43

1.06

1.18

2.28

1.96

2.10

-1.35

-0.84

1.23

1.11

0.89

-2.02

-1.79

WHERE EXCAVATION EXCEEDS 2 FEET, CARE SHOULD BE

TAKEN TO MAINTAIN CLAY BOTTOM OF WETLAND. IF SAND IS

ENCOUNTERED, CONTRACTOR SHALL OVEREXCAVATE 2 FEET

AND REPLACE WITH SUITABLE CLAY MATERIAL AND

COMPACT. COORDINATE WITH ENGINEER.

A B C D E F

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

5.

3.

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W is co ns in

IOWA D

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L A

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ELEVATIONS TABLE

CUT/FILL MINIMUM ELEVATION (FT.) MAXIMUM ELEVATION (FT.) COLOR

CUT -3.1 -2.5

CUT -2.5 -2.0

CUT -2.0 -1.5

CUT -1.5 -1.0

CUT -1.0 -0.5

CUT -0.5 0.0

FILL 0.0 1.0

FILL 1.0 2.0

FILL 2.0 3.0

FILL 3.0 4.0

FILL 4.0 5.3

EARTHWORK TABLE

CLASSIFICATION CUT TOTAL FILL + 25% SHRINK

EARTHFILL, EMBANKMENT, INTERIOR BERMS, TILE

COVER BERMS 6547 6553

NOTES:

1. THIS PLAN SHOWS GRADUATED COLOR SCALES OF RED AND BLUE TO INDICATED LOCATIONS AND DEPTHS OF CUT AND FILL. THOSE WITH COLOR BLINDNESS OR QUESTIONS SHOULD CONTACT THE ENGINEER.

2. ALL EARTHFILL FILL SHALL BE COMPACTED IN MAXIMUM 6" LIFTS. COMPACTION SHALL UTILIZE NRCS

METHOD 1.

3. THE QUANTITIES SHOW IN THE EARTHWORK TABLE ABOVE ARE IN ADDITION TO SPECIFIED QUANTITIES OF TOPSOIL. STRIP AND STOCKPILE 12 INCHES OF TOPSOIL IN EMBANKMENT FOOTPRINT AND ALONG PROPOSED DIVERSION TILE LENGTH OUTSIDE THE PROPOSED EASEMENT. STRIP 6 INCHES OF TOPSOIL IN ALL OTHER DISTURBED AREAS. RESPREAD ALL TOPSOIL IN DISTURBED AREAS PRIOR TO SEED BED

PREPARATION AND SEEDING IN STRIPPED AREAS.

4. EARTHWORK WILL BE PAID BASED ON PLAN QUANTITY AND SHALL BE BALANCED ON SITE WITHIN THE

EASEMENT FOOTPRINT. A 25% SHRINKAGE FACTOR WAS USED FOR CALCULATION PURPOSES.

COORDINATE WITH ENGINEER IF AN ADDITIONAL BORROW SITE OR SPOIL LOCATION ARE NEEDED.

5. AFTER EXCAVATION, THE BOTTOM OF THE POOL SHALL BE DEEPLY SCARIFIED (12 INCHES), MOISTURE CONDITIONED, AND RECOMPACTED TO FORM A SEAL ON THE POOL BOTTOM PRIOR TO RESPREAD OF

TOPSOIL.

6. IF SAND IS ENCOUNTERED IN LARGE QUANTITIES, CONTRACTOR SHALL OVEREXCAVATE 2 FEET OF SANDY MATERIAL (MIN) AND REPLACE SAND MATERIAL WITH COMPACTED CLAY. COORDINATE WITH THE

ENGINEER.

N O

R

TH

0+00 1+00

2+00 3+00

4+00 5+00

6+

7+

8+

9+

+0

+0

+0

+0

+0

+0

16+00 17+00 18+00 19+00 20+00 21+00 22+00

+0

+0

+0

+0

+0

+0

+0

+0

CENTERLINE OF BERM ALIGNMENT. SEE PROFILE.

CENTERLINE ALIGNMENT OF

PROPOSED 18 INCH DUAL WALL

HDPE TILE. SEE PROFILE.

4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 20+00 21+00 22+00 23+00 24+00 25+00 26+00 27+00

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PROPOSED TOP OF BERM = 958.25

OVER BUILD TO 958.50 (TOP OF TOPSOIL RESPREAD)

TO ACCOMMODATE FUTURE SETTLEMENT

PROPOSED SHEET PILE OUTLET

- SEE C401

EXISTING GROUND. STRIP AND STOCKPILE 12 INCHES OF

TOPSOIL IN ENTIRE BERM FOOTPRINT. RESPREAD

TOPSOIL AFTER BERM CONSTRUCTION.

HORIZONTAL SCALE:VERTICAL SCALE:

0+00 1+00

2+00

3+

4+00

5+00 5+29.68

2+

2+

.29

951.00

951.71

0+

0+

.9

0+

1+00

2+00

3+00

4+00 5+00

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EXISTING DEPRESSIONAL OXBOW

LOCATION. NO CONSTRUCTION TRAFFIC,

DO NOT DISTURB OUTSIDE RIP RAP LIMITS.

STABILIZED OUTLET TO QUARTER SECTION RUN (STREAM). PLACE

115 TONS OF CLASS E RIP RAP OVER GEOTEXTILE. 2' THICK.

CONTRACTOR SHALL EXCAVATE ALL UNSUITABLE MATERIAL

BELOW RIP RAP AND PLACE FLUSH WITH EXISTING GRADES. DO

NOT RESTRICT DRAINAGE CHANNEL. TAMP IN WITH EXCAVATOR

BUCKET TO LOCK IN PLACE. COORDINATE WITH ENGINEER.

PLACE 100 TONS OF CLASS E RIP RAP OVER

GEOTEXTILE. 2' THICK. CONTRACTOR SHALL

EXCAVATE ALL UNSUITABLE MATERIAL BELOW RIP

RAP AND PLACE FLUSH WITH EXISTING GRADES. TAMP

IN WITH EXCAVATOR BUCKET TO LOCK IN PLACE.

GROUTED RIP RAP PLUNGE POOL. PLACE 200 TONS

OF CLASS E RIP RAP 2' THICK. GROUT IN PLACE

WITH 48 CY CONCRETE GROUT. DO NOT CREATE A

SMOOTH SURFACE WITH GROUT. PLACE GROUT TO

FULL THICKNESS AGAINST SHEET PILE WALL.

GROUTED RIP RAP UPSTREAM OF SHEET PILE. PLACE 60

TONS OF CLASS E RIP RAP 2' THICK. GROUT IN PLACE WITH 13

CY CONCRETE GROUT. GROUT SURFACE SHALL BE SMOOTH

AND INSTALLED 1 INCH BELOW SHEET PILE CREST.

DRAWDOWN PIPE RISER. 18 INCH

SLOTTED CMP AND 25 TONS

CLASS 'E' RIP RAP. SEE DETAIL.

12 INCH HICKENBOTTOM INTAKE RISER.

385 SY TYPE 2B RECP. INSTALLED IN OUTLET

CHANNEL IMMEDIATELY FOLLOWING

SEEDING.

12 INCH TILE OUTLET. IE = 950.50 LAST 20 LF SHALL BE 15 INCH ALUMINIZED CMP.

PLACE 15 TONS OF CLASS E RIP RAP OVER GEOTEXTILE. CONTRACTOR SHALL

EXCAVATE ALL UNSUITABLE MATERIAL BELOW RIP RAP AND PLACE FLUSH WITH

EXISTING GRADES. DO NOT RESTRICT DRAINAGE CHANNEL. TAMP IN WITH

EXCAVATOR BUCKET TO LOCK IN PLACE. COORDINATE WITH ENGINEER.

12 INCH ALUMINAIZED

CMP DRAWDOWN PIPE

12 INCH ALUMINAIZED

CMP DRAWDOWN PIPE

12 INCH DUAL WALL HDPE

NON PERFORATED PIPE

=0+00 =1+00 =2+00 =3+00 =4+00 =5+00 =5+30

-0.71%

OXBOW OUTLET/INLET

PLACE 115 TONS OF CLASS E RIP RAP, 2' THICK OVER GEOTEXTILE. SET

OUTLET CREST ELEVATION AT 954.50, 20' WIDE BOTTOM WIDTH (MIN).

TAMP WITH EXCAVATOR TO LOCK INTO PLACE. OVEREXCAVATE

CHANNEL BOTTOM TO OBTAIN SUITABLE BASE. DO NOT RESTRICT

DRAINAGE CHANNEL. SPOIL EXCAVATED MATERIAL IN UPLAND AREA.

OXBOW

NWL = 954.50STABILIZED SLOPE. PLACE 100 TONS OF CLASS E RIP

RAP OVER GEOTEXTILE. 2' THICK. CONTRACTOR SHALL

EXCAVATE ALL UNSUITABLE MATERIAL BELOW RIP RAP

AND PLACE FLUSH WITH EXISTING GRADES. TAMP IN

WITH EXCAVATOR BUCKET TO LOCK IN PLACE.

GROUTED RIP RAP PLUNGE POOL. PLACE 200 TONS OF

CLASS E RIP RAP 2' THICK. GROUT IN PLACE WITH 48 CY

CONCRETE GROUT. GROUT SHALL LOCK IN BASE OF RIP RAP

LEAVING A ROUGH SURFACE FOR ENERGY DISSIPATION. DO

NOT CREATE A SMOOTH SURFACE WITH GROUT. PLACE

GROUT TO FULL THICKNESS AGAINST SHEET PILE WALL.

GROUTED RIP RAP UPSTREAM OF SHEET PILE. PLACE 60 TONS OF

CLASS E RIP RAP 2' THICK OVER NON WOVEN GEOTEXTILE. GROUT IN

PLACE WITH 13 CY CONCRETE GROUT. GROUT SURFACE SHALL BE

SMOOTH AND FINISHED 1 INCH BELOW SHEET PILE CREST.

VEGETATED EXCAVATED CHANNEL.

BOTTOM WIDTH = 20 FEET

SIDE SLOPES 4 TO 1.

STRIP 6" TOPSOIL AND RESPREAD PRIOR TO SEEDING.

AFTER SEEDING, INSTALL TYPE 2B RECP AND STAKE IN

PLACE PER THE MANUFACTURER'S RECOMMENDATIONS. .

SHEET PILE

CREST = 956.00

- REFER TO C401

PLUNGE POOL

TOP OF RIP RAP = 953.00

SHEET PILE BOTTOM = 947.0

- REFER TO C401

FINAL RIP RAP GRADE SHALL MATCH EXISTING BANK SLOPES OR

BE LAID BACK TO 2.5 TO 1 (MIN). DO NOT RESTRICT CHANNEL.

MATCH EXISTING CHANNEL BOTTOM.

DO NOT RESTRICT CHANNEL.

5' (MIN)

EXISTING OXBOW DEPRESSION.

NO CONSTRUCTION TRAFFIC.

PROPOSED

WETLAND BERM

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HORIZONTAL SCALE:VERTICAL SCALE:

0+00

1+00

2+00

3+00 4+00

5+00

6+00

7+00

8+00

9+00

10+00

11+00 12+00 13+00

14+00 15+00

16+00

+0

+0

+0

20+00 21+00

22+00

23+00

24+00 25+00

26+00

963.83 964.08

964.11 963.57

963.58 963.21

963.28

964.83

964.73

964.05 964.11 963.96

964.17

964.37

964.09

CENTERLINE ALIGNMENT OF

PROPOSED 18 INCH DUAL WALL

HDPE TILE. SEE PROFILE.

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 19+00.00 20+00.00 21+00.00 22+00.00 23+00.00 24+00.00 25+00.00 26+00.00

APPROXIMATE LOCATION

OF EXISTING 5 INCH TILE.

APPROXIMATE LOCATION OF

EXISTING 5 INCH TILE.

LOCATED 12 INCH HDPE TILE. IE = 959.54

CONNECT TO PROPOSED 18 INCH TILE USING

PREFABRICATED WATER TIGHT FITTING AND CONCRETE

COLLAR. NOTIFY ENGINEER IF SIGNIFICANT ADJUSTMENT

IS GRADES ARE ANTICIPATED TO BE REQUIRED.

PROPOSED 18 INCH DUAL WALL TILE @ 0.11% GRADE.

TRENCH SHALL BE PREPARED WITH AN APPROPRIATELY

SIZE TILE SPOON TO ENSURE HAUNCH SUPPORT.

PREFABRICATED BENDS AND FITTINGS REQUIRED ARE

CONSIDERED SUBSIDIARY TO THE TILE BID ITEM.

LAST 20LF SHALL BE 24" CMP,

ALUMINIZED, 16 GA WITH INTERNAL

BAR TYPE RODENT GUARD.

MAINTAIN 3.0 FEET OF COVER OVER PIPE

MOUND SOIL OVER TRENCH AFTER BACKFILL.

66'

(APPROXIMATE

SPACING OF

EXISTING TILE)

TILE COVER BERM

TOP WIDTH = 10 FEET

SLOPES = 4 TO 1

MINUMUM COVER = 3 FEET

PLACE 20 TONS CLASS E RIP RAP

OVER NON WOVEN GEOTEXTILE

FOR TILE OUTLET PROTECTION.

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HORIZONTAL SCALE:VERTICAL SCALE:

TILE CONNECTION NOTES:

1. EXISTING TILE MAP WAS PROVIDED BY THE LANDOWNER. LOCATIONS ARE APPROXIMATE. TILE TO BE VERIFIED IN THE FIELD BY THE CONTRACTOR.

2. BASED ON PROVIDED MAP, 5 INCH TILE WERE NOTED TO BE INSTALLED WITH A DRAIN SPACING OF 4 RODS (66 FEET) AND AT A DEPTH OF

APPROXIMATELY 3 FEET.

3. TILE CONNECTIONS SHALL CONSIST OF 20 LF OF NEW 6 INCH TILE TRANSITION FROM EXISTING TILE TO THE PROPOSED 18 INCH TILE. 10 LF (MIN) OF

EXISTING TILE DOWNSTREAM OF CONNECTION SHALL BE REMOVED AND UPSTREAM END OF REMAINING TILE SHALL BE CAPPED.

4. ALL TILES SHALL BE CONNECTED WHERE PRACTICAL. COORDINATE MODIFICATIONS WITH ENGINEER.

0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 5+00.00

6'

15'

25'

12'

TOP

WIDTH

40 LF 12" CMP @ 0.00%

44 LF 12" CMP @ 0.00%

IE = 950.50

IE = 951.00

IE = 951.00

IE = 951.00

DRAWDOWN STRUCTURE

INTAKE RISER.

- SEE DETAIL

WETLAND NWL

ELEV = 956.0

BOTTOM OF EXCAVATION.

MAINTAIN DRAINAGE

TOWARD DRAWDOWN RISER.

EXISTING GRADE

SCARIFY, MOISTURE CONDITION,

AND RECOMPACT 12" LAYER ON

BOTTOM OF WETLAND POOL.

- SEE LIMITS ON SHEET C201.

STRIP, STOCKPILE, AND

RESPREAD 12" (MIN) TOPSOIL IN

EMBANKMENT FOOTPRINT.

TRANSITION FROM CMP TO DUAL WALL HDPE. INSTALL

FERNCO CONNECTION AND ENCASE IN CONCRETE.

- SEE TILE CONNECTION DETAIL.

12 INCH HICKENBOTTOM INTAKE INSTALLED

IN DRAINAGE WATERWAY LOW POINT. TIE

INTO PROPOSED 12 INCH PILE. BACKFILL

WITH 2" CLEAN STONE. SEE DETAIL.

20 TONS CLASS E RIP RAP OVER GEOTEXTILE.

2' THICK. MATCH EXISTING CHANNEL GRADES.

DO NOT RESTRICT CHANNEL FLOW.

6X6 CMP ANTI SEEP COLLARS

- SEE DETAIL.

LAST 20 LF SHALL BE 15" CMP,

ALUMINIZED, 16 GA WITH INTERNAL

BAR TYPE RODENT GUARD.

298 LF 12" HDPE @ 0.16%

+0

+0

8+

9+

3+

4+00

5+00 5+29.68

1+00

951.00

951.71

0+

1+00

2+00

3+00

4+00

5+00

CENTER LINE ALIGNMENT OF DRAWDOWN PIPE. SEE PROFILE

HORIZONTAL SCALE:

VERTICAL SCALE:

A B C D E F

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=15+50 =16+00 =16+50

20' 6'6'

10'10' 26'

7' 7'

46'

BOLTED WALER OPTION DETAIL

C401

B

SHEET PILE GENERAL NOTES:

SHEET PILE CENTERLINE PROFILE

B B

B - B

B - B

8"

*NOTE: SHEET PILE BEYOND NOT SHOWN.

1. DESIGN SHEET PILE AREA IS 414 SF AFTER TRIMMING

2. SHEET PILING REQUIREMENTS DESIGN BASIS - SKYLINE STEEL/NUCOR SCZ14 OR ENGINEER APPROVED

EQUAL

2.1. MINIMUM SECTION MODULUS OF 14.36 IN3 PER FOOT OF WALL.

2.2. MINIMUM GRADE OF STEEL IS 50 KSI

2.3. MINIMUM MOMENT OF INERTIA OF 71.82 IN4 PER FOOT OF WALL.

2.4. MINIMUM THICKNESS OF 0.250"

2.5. ALL SHEET PILING SHALL MEET ASTM A-572 GR50.

2.6. ALL BOLTS SHALL MEET ASTM A307 GRADE A.

2.7. ALL WASHERS SHALL MEET ASTM F436.

2.8. ALL NUTS SHALL MEET ASTM A563.

3. CONTRACTOR SHALL SUBMIT DETAILED SHOP DRAWINGS OF PROPOSED SHEET PILE SYSTEM FOR

APPROVAL BY ENGINEER.

4. SHEET PILE ATTACHMENT TO WALER:

4.1. SHEET PILE WALER/PILE CAP MAY BE BOLTED OR WELDED. SEE DETAILS FOR OPTIONS.

4.2. BOLTED WALER OPTION

4.2.1. ALL BOLTS WILL BE 1'' DIAMETER WITH 2 WASHERS. BOLT SHALL BE EXTENDED AT A MINIMUM OF 3 8 ''

BEYOND THE NUT.

4.2.2. ALL HOLES SHALL BE FIELD DRILLED TO 1 1

16" DIAMETER. TORCH, PLASMA CUTTING, OR OTHER

METHODS RESULTING IN AN IMPERFECT HOLE WILL NOT BE PERMITTED.

4.2.3. THE WALER SHALL BE PLACED ON THE DOWNSTREAM SIDE OF THE WEIR.

4.3. WELDED PILE CAP OPTION

4.3.1. AT THE CONTRACTORS OPTION, A WELDED PILE CAP MAY BE INSTALLED IN LIEU OF THE BOLTED

WALER. SEE PILE CAP OPTION DETAIL.

4.3.2. WELDING SHALL BE IN ACCORDANCE WITH THE STRUCTURAL WELDING CODE, AWS D1.1, LATEST

EDITION, AND SHALL BE PERFORMED BY CERTIFIED WELDERS ONLY USING E70XX ELECTRODES.

5. ANY HOLES LEFT IN SHEET PILE SHALL BE CLOSED OFF.

6. AFTER SHEETING AND WALER INSTALLATION, ALL SHEETING IS TO BE CUT TO CONFORM WITH THE 3:1 SIDE SLOPE OF THE WEIR, MEET DESIGN ELEVATIONS, AND TO REMOVE ANY DAMAGE CAUSED BY DRIVING.

7. STRUCTURAL STEEL SHALL BE FABRICATED AND ERECTED IN ACCORDANCE WITH THE LATEST SPECIFICATION OF AISC. FABRICATOR SHALL SUBMIT SHOP DRAWINGS AND FABRICATE AFTER ENGINEER'S

REVIEW AND APPROVAL.

8. IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE ALLOWABLE CONSTRUCTION LIVE LOADS.

9. PROVIDE ALL NECESSARY TEMPORARY BRACING, SHORING, GUYING, OR OTHER MEANS TO AVOID EXCESSIVE STRESSES AND TO HOLD STRUCTURAL ELEMENTS IN PLACED DURING CONSTRUCTION.

10. A TEMPORARY BERM TO HOLD / GUIDE SHEETPILE DURING CONSTRUCTION IS RECOMMENDED.

11. NOTIFY ENGINEER IMMEDIATELY IF BEDROCK IS ENCOUNTERED PRIOR TO INSTALLATION OF SHEET PILE TO

DESIGN DEPTHS.

SECTION E-E

E

E

WELDED PILE CAP OPTION DETAIL

C401

A

SHEET PILE SPLICEC10X15.3 WALER

1" DIAMETER BOLT WITH 2

WASHERS. 1 BOLT TO BE PLACED

ON EACH SIDE OF SPLICE

C10X15.3 WALER

1 116'' DIAMETER HOLE (BOLTED OPTION)

WALER SPLICE

4" FILLET WELD

ALL AROUND

PL 3 8x8x8

MITER CUT AND

WELD PILE CAP

AT TRAPEZOIDAL

WEIR CORNERS

FILLET WELD EACH

SHEET PILE SECTION

TO CAP ANGLE.

PL 38 X 2 X CONTINUOUS

(2) L5 X 5 X 38 STEEL

ANGLES ALONG ENTIRE

SHEET PILE LENGTH.

16" FILLET WELD,

CONTINUOUS, BOTH SIDES

TOP OF BERM

ELEV = 958.25

PROPOSED DOWNSTREAM GRADES

BOTTOM OF PLUNGE POOL

EXISTING GRADE

SHEET PILE WEIR

414 SF AFTER TRIMMING.

A B C D E F

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WEIR CREST

ELEV = 956.00

EXISTING SOIL SURFACE

16" HOLES LOCATED AS SHOWN,

PRE-PUNCHED BY SIGN

FABRICATOR. FASTEN SIGN TO

POSTS WITH 3/8" DIA. STEEL BOLT &

NUT SET, SEE BOLT, WASHER, &

NUT FASTENER DETAIL THIS SHEET

(4 SETS REQ'D. PROVIDED AND

INSTALLED BY CONTRACTOR).

SIGN PANEL TO BE 0.080" THICK

ALUMINUM SUBSTRATE WITH 3M (OR

EQUAL) ENGINEER GRADE REFLECTIVE

SHEETING. SIGN PANELS FURNISHED BY

THE DIVISION OF SOIL CONSERVATION.

SIGN PANEL INSTALLED BY CONTRACTOR.

BACKFILL WITH CONCRETE

(PREFERRED), CLEAN STONE

(ACCEPTABLE), OR HAND-TAMPED

EARTH IN SMALL LIFTS (SUBJECT

TO ENGINEER'S APPROVAL)

2 EACH OF 4"x4"x12'

PRESSURE-TREATED POST

(TYP.). POSTS SEALED WITH

THOMPSON'S WATER SEAL OR

EQUAL. POSTS, SEALANT, AND

INSTALLATION PROVIDED BY

CONTRACTOR.

SIGNAGE NOTES:

1. DIVISION WILL FURNISH SIGN PANEL. CONTRACTOR IS RESPONSIBLE FOR PROVIDING POSTS, HARDWARE, AND INSTALLATION.

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 OR RUST RESISTANT.

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 DIVISION AND LANDOWNER APPROVAL 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 UNLESS NOTED OTHERWISE.

TOP

PANEL

9"

30"

48" 9"

3" (T

YP

BOLT, WASHER, &

NUT

FASTENER DETAIL

NOT TO SCALE

STEEL

WASHER

HEAD

NYLON WASHER

AGAINST FACE OF SIGN

STEEL WASHER

BACK OF POST NUT

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NWL = 954.50

ELEV = 954.50

OXBOW

DEPRESSION

EXISTING CHANNEL

2.

0'

10.00'

PLACE 200 TONS OF CLASS 'E'

REVETMENT OVER NON-WOVEN

GEOTEXTILE FABRIC

NOTE: EXTEND OVERFLOW REVETMENT WIDTH

(APPROXIMATELY 35') TO TIE INTO PROPOSED

GRADES AT ELEVATION 955.50. CHANNEL BOTTOM

SHALL BE 20' MINIMUM WIDTH AT 954.50.

ELEV = 954.50

ELEV = 952.50

5.00'

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NWL = 956.00

PROPOSED GROUND

EXISTING GROUND (VARIES)

ELEV = 955.75

10' MINIMUM

REFER TO GRADING PLAN

WAVE BENCH

A1 WAVE PROTECTION BENCH AT NWL

ELEV = 956.25

EXISTING GROUND

TIE INTO EXISTING TILE AS

DETAILED -

FIELD VERIFY LOCATION

AND DEPTHSNWL = 956.00

PROPOSED GROUND

LAST 20 LF SHALL BE CMP

WITH RODENT GUARD

1 SIZE LARGER THAN PROPOSED TILE

PE FIELD TILE -

SEE PLANS FOR LENGTHS AND

LOCATIONS

PROPOSED GROUND

CONCRETE CONNECTION

MATCH INVERTS

A4 TYPICAL TILE DAYLIGHT

MATCH INVERTS

D

2D INSTALL APPROPRIATELT SIZED FERNCO OR

APPROVED EQUIVALENT COUPLER AND

CONCRETE COLLAR OF 3,000 PSI MINIMUM STRENGTH

CONCRETE, MINIMUM 2D WIDE CENTERED ON JOINT,

MIN 6'' THICKNESS FOR FULL 2D WIDTH. THICKNESS

CAN TAPER DOWN BEYOND THE 2D WIDTH.

FlowFlow

NEW SECTION OF TILE

EXISTING TILE

A2 FIELD TILE REPAIR CONNECTION

IE = 957.00

D4 PROJECT SIGN

FILTER FABRIC

24" THICK

CLASS E

RIP RAP

20' 3'

954.50

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SECTIONAL ELEVATION A-A

RISER DETAIL

#4 BARS @ 12''

OC BOTH WAYS

48" CIRCULAR

CORRUGATED METAL RISER

RIM = 958.50

CHANNEL IRON FOR

CHECK BOARDS -

SEE DETAIL

7.0'

CAST IN PLACE

BOTTOM STOP

LOG MINIMUM 3''

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 CORRUGATED

METAL 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".

5) PROVIDE MATCHING PADLOCKS FOR ALL LOCKING STRUCTURES.

PROVIDE OWNER WITH FOUR KEYS.FLAT LOCKABLE CIRCULAR LID

WITH HINGE BY HAALA INDUSTRIES OR

APPROVED EQUIVALENT (PS48-58S)

A2 WATER CONTROL…