cpib1

1

882.86

8

7

5

8

7

5

9

0

0

9

0

0

8

8

0

8

8

08

8

0

8

8

5

8

8

58

8

5

890

8

9

08

9

0

895

8

9

5

8

9

5

9

0

5

9

0

5

9

1

0

9

1

0

9

0

0

9

2

5

8

9

5

905

9

1

0

9

1

5

9

2

0

9

3

0

9

3

5

9

0

0

9

2

5

9

0

5

9

1

0

9

1

59

2

0

900

9

2

5

8

9

0

8

9

5

9

0

5

9

1

0

9

1

5

9

2

0

9

3

0

cpib1

1

882.86

21694 C0-10 SITE DATA

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

  

SITE DATA

C0-10

BLA871324B

BAB

BAB

IDD/CDR

--/--/--

18-21694

C0-10 SITE DATA

---- 18-21694 C0-10

BLACK HAWK CO. IOWA

IDALSCONSTRUCTED

WETLAND

0

SCALE IN FEET

300 600

GIS PARCEL DISCLAIMER:

INFORMATION FOR THE BOUNDARY / LOT LINES 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.

NICHOLAS AND NANCY MEIER

W 1/2 NW NW SEC 24

T 87 R 13 EXC HWY

NICHOLAS AND NANCY MEIER

NW NW SEC 24 T 87 R 13 EXC

THAT PART OF E 400 FT W 1700 FT N

NICHOLAS AND NANCY MEIER

NE NW SEC 24 T 87 R 13 EXC THAT

PART OF E 400 FT W 1700 FT N

EAST EAGLE ROAD

HE

SS

R

OA

D

OVERALL CONTRIBUTING

WATERSHED BOUNDARY

EAST FILL AREA: 0.9 AC

NORMAL POOL AREA: 1.4 AC

DISTURBED AREA: 3.8 AC

NATIVE SEEDING ARE2.5.3 AC

MULCHING AREA: 0.44 AC

PROPOSED EASEMENT AREA

4.96 ACRES

APPROXIMATE UTILITY LOCATION

EXISTING TILE

LOCATION IS

APPROXIMATE

APPROXIMATE INTERSECT

OF TILE UNDER ROAD

ROAD ELEVATION: 887.88'

NORMAL POOL AREA

NATIVE SEEDING AREA

BROME SEEDING AREA

REQUIRED MULCHING AREA

WASTE SOIL DISPOSAL AREA

M

I

L

L

E

R

C

R

E

E

K

EXISTING TREE

2.5 AC

8/1/2019 WCS DETAILS, NOTES, & QUANTITIES CDR

21694 C0-20 CONST NOTES

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

  

CONSTRUCTIONNOTES & DETAILS

C0-20

BLA871324B

CDR/BAB

BAB

IDD/CDR

02/22/2019

18-21694

C0-20 CONSTRUCTION NOTES & DETAILS

---- 18-21694 C0-20

BLACK HAWK CO. IOWA

IDALSCONSTRUCTED

WETLAND

MIN

6"

MIN

6"

RU

NO

FF FLO

W

DIR

EC

TIO

N O

F

PO

ST

EM

BE

DM

EN

T

1.5' M

IN

24" M

IN

GEOTEXTILE FABRIC

5' TEE POST AT 5' - 4' MAX

SPACING

FABRIC ANCHORAGE TRENCH

BACKFILL WITH TAMPED NATURAL

SOIL

SILT FENCENTS

CONSTRUCTION NOTES:

1. ACCESS AND STAGING AREAS SHALL BE COORDINATED WITH THE LANDOWNER PRIOR TO MOBILIZATION.

2. WORK LIMITS ARE CONFINED TO A MAXIMUM 50' OUTSIDE THE EASEMENT AREA. CONTRACTOR SHALL TRY TO

MINIMIZE DISTURBANCE FOOT PRINT.

3. UTILITIES: CONTRACTOR IS RESPONSIBLE FOR CALLING IOWA ONE CALL (1-800-292-8989) AND MUST PROVIDE

VERIFICATION (TICKET NO.) TO THE NRCS/ENGINEER PRIOR TO MOBILIZATION. CONTRACTOR RESPONSIBLE FOR

PROTECTION OF ALL UTILITIES. CONTRACTOR TO VERIFY LOCATION/ELEVATION OF ALL UTILITIES IN WORK AREA

PRIOR TO EXCAVATION.

4.

KNOWN UTILITIES:

IOWA REGIONAL UTILITIES ASSOCIATION LA PORTE CITY TELEPHONE

SANDY SPANGENBURG DAVID POWELL

CIWAGC@GCMUNI.NET - 319.824.5920 LPTCEL@NETINS.NET - 319.342.3369

MIDAMERICAN - ELECTRIC MIDAMERICAN - GAS

JORDYN WEBER JORDYN WEBER

JWEBER@MIDAMERICAN.COM- 319.291.4728JWEBER@MIDAMERICAN.COM- 319.291.4728

5. TILE INVESTIGATION: CONTRACTOR IS RESPONSIBLE FOR LOCATING AND VERIFYING TILE LOCATION AND ELEVATION

PRIOR TO CONSTRUCTION. CONTRACTOR SHALL NOTIFY ENGINEER (ISG) OF ANY DISCREPANCIES. CONTRACTOR

SHALL NOTIFY ENGINEER IMMEDIATELY OF ANY UNKNOWN TILE LINES ENCOUNTERED AND LEAVE UNCOVERED FOR

ENGINEER'S EVALUATION.

6. FIELD TILE CONNECTIONS OF DISSIMILAR PIPE SHALL BE MADE AND ENCASED IN A PORTLAND CEMENT CONCRETE

COLLAR AT LEAST 6" THICK AND 12" WIDE, CONTINUOUS AROUND ALL JOINTS.

7. DEWATERING: CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING REASONABLY DRY WORKING CONDITIONS

DURING CONSTRUCTION. ANY TEMPORARY CROSSING/PUMPING IS TO BE AT CONTRACTOR'S DISCRETION AND

INCIDENTAL TO ITEMS OF WORK.

8. TOPSOIL STRIPPING:

8.1. STRUCTURE, BORROW AREAS - SHALL BE STRIPPED OF NO LESS THAN 12 INCHES.

8.2. WATERWAY - SHALL BE STRIPPED OF NO LESS THAN 9 INCHES.

9. TOPSOIL STOCKPILE: CONTRACTOR IS RESPONSIBLE FOR SEGREGATING TOPSOIL FROM EXCAVATION SPOILS

THROUGHOUT CONSTRUCTION. CONTRACTOR IS TO DESCRIBE WORK PROGRESSION INCLUDING TOPSOIL

MANAGEMENT AT PRECONSTRUCTION MEETING.

10. 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.

11. ALL AREAS UNDER STRUCTURAL FILL SHALL BE SCARIFIED TO A DEPTH OF SIX (6) INCHES AND RECOMPACTED IN

ACCORDANCE WITH SPECIFICATION IA-23, SECTION 6, METHOD 2.

12. TESTING: CONTRACTOR TO ENSURE ADEQUATE MOISTURE AND DENSITY THROUGHOUT CONSTRUCTION.

COMPACTION IS TO BE PERFORMED IN ACCORDANCE WITH SPECIFICATION IA-23 EARTHFILL.

12.1. CONTRACTOR IS RESPONSIBLE FOR PROVIDING WATER TO ENSURE SOILS MEET ADEQUATE MOISTURE

REQUIREMENTS.

13. 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.

14. TOEWALL STRUCTURE CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE NOTES ON SHEETS C0-30 TO C0-33.

15. RIPRAP: ALL RIPRAP LAYERS SHALL BE PLACED 18 INCHES THICK OVER CLASS IV, NONWOVEN, GEOTEXTILE FABRIC.

16. ROAD ROW: CONTRACTOR SHALL NOTIFY COUNTY ENGINEER'S OFFICE AND MEET ALL CRITERIA SET FORTH BY

COUNTY ENGINEER FOR ALL WORK WITHIN ROAD RIGHT-OF-WAY.

17. WORKMANSHIP: CONTRACTOR SHALL PERFORM ALL WORK WITH CRAFTMANS LIKE APPEARANCE AND LEAVE NO

TRASH/DEBRIS AFTER DEMOBILIZATION.

SEEDING NOTES:

18. ALL SEEDBEDS SHALL BE PREPARED AREAS AS SPECIFIED IN SECTION IA-6.

19. ALL ROCKS 3" OR LARGER IN DIAMETER SHALL BE REMOVED FROM THE SEED BED.

20. CONTRACTOR SHALL SUBMIT A SEEDING PLAN ON FORM IA-CRP-4 FOR EACH TYPE OF SEED TO BE PROVIDED AT

LEAST 3 WEEKS PRIOR TO BEGINNING SEEDING OPERATIONS.

21. NO SEED TO BE PLACED BELOW NORMAL WATER ELEVATION (872.5').

22. SEED TYPES SHALL BE SPECIFIED IN SECTION IA-6 OF THE PROJECT SPECIFICATIONS.

23. ANY EXISTING VEGETATION AREAS THAT ARE TO REMAIN UNDISTURBED WILL BE DETERMINED BY THE ENGINEER. NO

CHANGE IN CONTRACT PRICE WILL BE ALLOWED DUE TO CHANGE IN SEEDING AREAS.

WATER CONTROL STRUCTURE NOTES:

24. PIPE SHALL BE DUAL WALL CORRUGATED HDPE.

25. PIPE EMBEDMENT AND BACKFILL MATERIALS SHALL BE CONSISTENT WITH SPECIFICATION IA-23. A DEWATERED, DRY

TRENCH IS REQUIRED. PLACE AND COMPACT FILL AROUND PIPE AND AND STRUCTURE IN ACCORDANCE WITH

SPECIFICATION IA-23, SECTION 6 AND AS TRENCH IS FILLED OR BERM FILL IS RAISED. NO GRANULAR BEDDING ALONG

PIPE IS ALLOWED. SUITABLE EARTH BACKFILL MUST BE USED.

26. THE COMPACTION OF EACH BACKFILL LAYER MUST BE APPROVED BY ENGINEER'S REPRESENTATIVE PRIOR TO

PLACEMENT OF NEXT LAYER. DENSITY TESTING IS NOT REQUIRED.

27. STRUCTURE SHOP DRAWINGS ARE REQUIRED FOR ENGINEER'S REVIEW AND APPROVAL BEFORE FABRICATION OF

WATER CONTROL STRUCTURE.

28. STRUCTURE IS TO BE CONSTRUCTED OF ALUMINIZED CORRUGATED METAL PIPE.

29. STOP LOG CHANNEL IS TO BE ANCHORED TO THE WALLS AND FLOOR PRIOR TO PLACING CONCRETE INVERT.

30. A CONCRETE INVERT IS TO BE INSTALLED AFTER STOP LOG CHANNEL IS INSTALLED. THE BOTTOM STOP LOG IS TO BE

CAST INTO THE INVERT WITH THREE HALF INCH Ø "J BOLTS" FASTENED TO THE BOTTOM STOP LOG. NO LIFTING

HOLES ARE REQUIRED FOR THIS BOTTOM LOG.

31. PLACE BASE OF STRUCTURE ON FIRM UNDISTURBED EARTH FOUNDATION APPROVED BY ENGINEER.

32. STOP LOG ASSEMBLY SHALL BE WATER TIGHT AND CONFORM TO WHIPPS, INC. OR AN APPROVED EQUAL. ALL

STRUCTURE JOINTS TO BE WATER TIGHT TO LIMIT ANY WATER MIGRATING THROUGH JOINTS AND AROUND THE STOP

LOG CHANNEL.

CMP SLOTTED INTAKE RISERNTS

15" DIA. CMP

DISSIMILAR PIPE CONNECTION

WRAP JOINT & CONCRETE COLLAR

12" DIA. DUAL WALL HDPE

PIPE TO DRAWDOWN INLET RISER

BERM

SLOPE

BEEHIVE INLET GRATE

(SEE DETAIL)

I=869.3

4'

SURROUND

RISER WITH

EROSION STONE

SLOTTED PERFORATIONS

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

VERT. OFFSET COLUMNS 4" AND 8"

FROM TOP OF STRUCTURE

CORRUGATED

METAL RISER W/

PERFORATIONS

TOP VIEW

30° TYPICAL

SEAM

℄ SLOT

DISSIMILAR PIPE CONNECTION

WRAP JOINT & CONCRETE COLLAR

ANTI-SEEP COLLARNTS

ANTI-SEEP COLLAR NOTES:

1. INSTALL ANTI-SEEP COLLAR IN ACCORDANCE WITH

MANUFACTURER GUIDELINES. CONTRACTOR IS RESPONSIBLE

FOR ENSURING ANTI-SEEP COLLAR IS COMPATIBLE WITH PIPE

SUPPLIED.

2. CONTRACTOR SHALL ENSURE WATERTIGHT SEAL IS FORMED

BETWEEN PIPE AND COLLAR.

3. PLACE ANTI-SEEP COLLARS AS SHOWN ON THE PLANS.

4. MINIMUM COLLAR FRAME DIMENSIONS ARE 3' X 3'.

5. AGRIDRAIN ASCO3 OR EQUIVALENT.

3'

3'

DRAWDOWN STRUCTURE NOTES:

1. ALTERNATE OPTION: PVC BASIN WITH FACTORY CONNECTION; ENSURE ENGINEER APPROVAL

ITEM DESCRIPTION

SPEC.

NO.

EST.

QUANTITY

UNIT

1 RUBBISH DISPOSAL - REMOVE & BURY IA-1 1 LS

2

TOPSOIL-STRIP, STOCKPILE, RESPREAD

IA-1

8,659

CY

3

SILT FENCE-INSTALLATION, MAINTENANCE, & REMOVAL

IA-5 892 LF

4 BUFFER SEEDING IA-6 2.5 AC

5STRUCTURAL/IMPOUNDMENT SEEDING

IA-6 1.5

AC

6

MOBILIZATION/DEMOBILIZATION

IA-8 1 LS

7 EXISTING TILE REMOVAL IA-9 240 LF

8 FIELD TILE CONNECTION IA-9 8 EA

9 TILE INVESTIGATION IA-9 8 HR

10 OVER EXCAVATION OF UNSUITABLE MATERIALS IA-21 150 CY

11 COMPACTED EARTHFILL IA-23

1,974

CY

12 SPOIL PLACEMENT - GRADING & SHAPING IA-23

3,545

CY

13 TILE TRENCH CRADLING ROCK IA-24 24 TN

14

HDPE - PERFORATED SINGLE WALL, 12" DIA.

IA-45 570 LF

15

HDPE - PERFORATED SINGLE WALL, 6" DIA.

IA-45 196 LF

16

HDPE - NONPERFORATED DUAL WALL, 12" DIA.

IA-45 60 LF

17

CMP - TILE EXTENSION, 15" DIA. WITH ANIMAL GUARD

IA-46 20 LF

18 EROSION STONE IA-61 248 TN

19 CLASS E RIPRAP IA-61 105 TN

20 CONCRETE GROUT IA-62 40 CY

21DRAWDOWN STRUCTURE IA-81 1 EA

22

ALUMINUM DROP STRUCTURE W/ 15" STUBIA-81 1 LS

23 NONWOMEN TYPE IV GEOTEXTILE FABRIC IA-95 390 SY

24IN-LINE WATER CONTROL STRUCTURE IA-620 1 EA

25

CMP - CULVERT, 14 GAUGE, 24" DIA.

IA-46 60 LF

36"

8"

60

"6

"

WATER CONTROL STRUCTURE ELEVATIONNTS

TOP STOP LOG CHANNEL

ELEV. 873.94

TOP STOP LOG

ELEV. 872.94

TOP OF EARTH ACCESS BERM

ELEV: 874.00

4"

8"

CONTINUOUSLY WELD STOP LOG CHANNEL

TO RISER. ALUMINIZE AFTER WELDING.

MIN. 36" DIA.

ALUMINIZED CMP TO BE

USED FOR STRUCTURE

48"x48"x6" CONCRETE SLAB

FLUSH WITH GROUND

W/ 2- #4 BARS @ MIDSLAB

SURROUNDING CMP

6"

5.5

"

ELEV. 874.94

12

"

6" REINFORCED CONCRETE

BASE, PLACE #4 MID SLAB @

12" ON CENTER EACH WAY

15" DIA. STUB-CONTINUOUSLY

WELDED (TYP.)

12" MIN.

12" DUAL WALL HDPE W/

INTERNAL GASKETED FITTING

WRAP JOINT WITH GEOTEXTILE

AND ENCASE WITH 6"x12" CONTINUOUS

CONCRETE COLLAR CENTERED AT

EDGE OF CMP STUB. (TYP)

ALTERNATE CONNECTION TO BE

APPROVED BY ENGINEER

6" MIN

4"

PROVIDE SLOTS FOR REMOVAL TOOL

- TWO PER STOP LOG ON UPPER SIDE.

STOP LOG & REMOVAL TOOL DETAILS

6"

2"

1/2" ROUND

SMOOTH

STEEL ROD

BEND 6" LOOP

AND WELD TO

PROVIDE

HANDLE

SUPPLY 3/4" DIA X 1/4"

THICK "WASHER"

WELDED TO 1/2"

STEEL ROD

TWO REMOVAL

TOOLS REQUIRED

5'-6

"

2"X6" ALUM. TUBE W/ 1/4" WALL

THICKNESS IS REQUIRED

6"

1/2

"

1"

1 1/2

NTS

ALTERNATE STOP LOG MATERIAL

1 1/2" X 6" PVC STOP LOGS.

STOP LOGS CAN BE PREFABRICATED

TO FIT THE STOP LOG CHANNEL.

INSTALL 36" GRATE AGRI-DRAIN

GR36 WITH COLLAR OR APPROVED

EQUIVALENT

MODIFY TO BE LOCKABLE

INVERT=868.94

NORMAL POOL ELEV. 872.50

FLOW

STOP LOG CHANNEL NOTES:1. ALL STEEL SHALL BE FY=36 KSI.

2. STOP LOG CHANNEL SHALL BE FURNISHED AS ONE CONTINUOUS PIECE W/

CONTINUOUS WELDS

3. ALL STEEL STOP LOG CHANNEL COMPONENTS ARE TO BE ALUMINIZED

AFTER WELDING AND DRILLING IS COMPLETE

4. CONTRACTOR IS TO APPLY SEALANT VERY GENEROUSLY TO BACKSIDE OF

STOP LOG CHANNEL TO ENSURE WATERTIGHT SEAL. SEALANT SHALL BE

SIKA 30 YEAR INDUSTRIAL CAULK IN LIMESTONE GREY OR APPROVED

EQUIVALENT.

21694 C0-3X TOEWALL

DATE

REVISION SCHEDULE

DESCRIPTION BY

PROJECT NO.

CAD FILE NAME

DRAWN BY

DESIGNED BY

ORIGINAL ISSUE DATE

CLIENT PROJECT NO.

REVIEWED BY

PROJECT

SHEET

TITLE

WITHOUT PRIOR WRITTEN CONSENT.INC. AND MAY NOT BE USED, COPIED OR DUPLICATED THIS DOCUMENT IS THE PROPERTY OF I & S GROUP,

  

ALUMINUM DROPSTRUCTURE 1

C0-30

BLA871324B

BAB/CDR

BAB

IDD/CDR

18-21694

--/--/--

BLACK HAWK CO. IOWA

IDALSCONSTRUCTED

WETLAND