Addendum 1 & Pre-bid.pdf

Division of Soil Conservation and Water Quality

Cover Sheet

To: All plan holders From: Tracy Bruun, Division

Pages: 34 Phone: 515-344-6279

Re: Flo971628B Nutrient Reduction Wetland (Bid 26-07) Date: August 21, 2026

Comments: Page

• Cover Sheet 1

• Addendum No. 1 with Attachments 1 and 2 2-28

• Pre-Bid Meeting Minutes 29-33

• Pre-Bid meeting attendance list/Updated plan holders list 34

• Electronic files for grading can be obtained by e-mail by contacting Spencer Pech with ISG Inc at 563- 920-5758 or spencer.pech@isginc.com.

- END OF COVER PAGE -

August 21, 2026

Division of Soil Conservation and Water Quality 1305 E Walnut Street Des Moines, IA 50319

TO: Prospective Bidders

Subject: Addendum No. 1 to Bid Documents FLO971628B Nutrient Reductionl Wetland Project – Bid No. 26-7 Floyd County, Iowa

This addendum forms a part of the bidding contract documents and modifies the original bidding documents posted July 31, 2026. An updated bidding form, Document CC.– Proposal and Schedule of Prices is attached with the addendum acknowledged. This updated bidding form must be used for 26-7 and all bidders must acknowledge this addendum on Page CC-2. FAILURE TO DO SO WILL SUBJECT BIDDER TO DISQUALIFICATON.

Description:

DOCUMENT CC– PROPOSAL AND SCHEDULE OF PRICES, 26-7 (See Attachment No.1)

Please use the updated Document CC, to acknowledge Addendum No. 1 (See Attachment No. 1):

Plans (See Attachment No. 2) The location of the proposed construction access has been modified, the location of the antiseep collar has changed and the sheetpile detail has been updated to provide more clarity. Attached are the revised set of Plans.

Sincerely, Sara Smith, P.E.

Water Resources Bureau

Attachment No. 1 – Updated Document CC Attachment No. 2 – Revised set of Plans

End of Addendum No. 1

FLO971628BNutrient Reduction Wetland Project DOCUMENT CC – Attachment 1 Bid No. 26-7 PROPOSAL AND SCHEDULE OF PRICES

Time and Date for Bid Submissions: 3:00:00 PM, 08/26/2026

BIDDER LOGIN –

https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa

Time and Date of Bid Opening: 3:00 PM, August 26, 2026

Bid Opening TEAMS: +1 469-998-7627,,352050218#

Project Description and Location: Flo971628B Nutrient Reduction Wetland Project Section 28, Township 97 North, Range 16 West Floyd County, Iowa

PROPOSAL AND SCHEDULE OF PRICES

Proposal of (PRINT Name of Bidder: COMPANY & CONTACT)

Located at (FULL Address)

(Telephone Number)

Amount of

Proposal Guarantee

Description of Work Specified Completion Date Liquidated Damages

10% of Base Bid

All Work Except Seeding

June 15, 2027

$175.00 Per Day

Seeding - Buffer Seeding – Structure

06/30/2027 09/15/2027

$125.00 Per Day

Seeding must be done within the respective seeding period

The undersigned hereby agrees, if awarded the contract, to execute the proposed contract and to furnish satisfactory Performance Bond in an amount not less than one hundred percent (100%) of the contract award within fourteen (14) days from the date when Notice-of-Award is received, and to provide all supervision, labor, materials, and equipment required to complete the project designated above, for the prices hereinafter set forth, in strict compliance with the Contract Documents prepared by the Division.

Further, the parties agree and acknowledge as follows:

The amount of loss or damages likely to be incurred by Division are uncertain and said loss is incapable or very difficult to quantify and estimate;

The amount specified for liquidated damages herein bear a reasonable relationship to, and are not plainly or grossly disproportionate to, the probable loss likely to be incurred by Division in connection with any delay on part of the Contractor;

The amount of liquidated damages fixed herein bears a reasonable relationship to Division’s anticipated losses and/or actual losses;

The amount of liquidated damages herein fairly approximates Division’s loss at the time of making of this Agreement;

The amount of liquidated damages fixed herein are fair and reasonable and it approximates to the extent possible the actual loss to Division as a result of any delay on the part of Contractor; and

Division and Contractor are sophisticated parties and negotiated this Agreement at arm’s length.

Now therefore, in consideration of the mutual obligations set forth herein, the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows:

Contractor will commence the work after the Preconstruction Conference and by the Construction Start Date approved by Division in the Construction Progress Schedule.

Contractor will complete the work within the specified time period identified in the contract, or as amended, or be responsible for liquidated damages per day as set forth in the above table.

The liquidated damages may be withheld from payments made to the Contractor by the Division upon written notice that liquidated damages have begun to accrue, and such damages are in addition to other remedies available as provided for in this contract and applicable law.

A Proposal Guarantee in the amount stipulated herein is included with this proposal, to be forfeited to the Division, if the undersigned fails or refuses to execute the contract and furnish satisfactory Performance Bond, if awarded the contract.

By _______________________________________________ (Signed)

(PRINT NAME)

(Title) (Date)

In executing this proposal, Bidder acknowledges receipt of Addendum Number _____ dated ____________________

In executing this proposal, Bidder acknowledges receipt of Addendum Number _____ dated ____________________

In executing this proposal, Bidder acknowledges receipt of Addendum Number _____ dated ____________________

1 08/21/26

THE FOLLOWING AFFIDAVIT MUST BE COMPLETED AND NOTARIZED, OR THIS BID WILL BE REJECTED

AFFIDAVIT

The signatory, being duly sworn, does depose and say that the undersigned is an authorized representative of:

(Name of Firm)

Located at ____________________________________________________________________________________ hereinafter referred to as “Bidder” and does hereby affirm to have personal knowledge that said Bidder has thoroughly examined the Contract Documents, carefully prepared the Proposal and Schedule of Prices form, and has checked the same in detail before submitting; and that said Bidder, or the agents, officers, or employees thereof, have not, either directly or indirectly, entered into any agreement, participated in any collusion or fraud, or otherwise taken any action in restraint of free competitive bidding in connection with this bid.

(Signed)

(PRINT name)

Subscribed and sworn to before me this _________ day of ________________________________, 20____

(Signed, Notary)

My Commission Expires _______________, 20______

Must include notary stamp

SCHEDULE OF PRICES

Flo971628B Project Contract No. 26-07 Section 28, Township 97 North, Range 16 West, Floyd County, Iowa

Name of Bidder:

IMPACS

LI #

ISG

LI #

SUB-

ITEM

DESCRIPTION SPECIFIC-

ATION NO.

EST

QTY

UNIT Unit Price Unit Price

1.1 1 - Mobilization & Demobilization CS-008 1 LS

1.2 2 - Site Stripping & Preparation IA-CS-001 1 LS

3 - Crop Damage IA-CS-001 0 AC

1.3 4 - Silt Fence IA-CS-005 430 LF

1.4 5 - Straw Wattle IA-CS-005 175 LF

1.5 6 - Buffer Seeding IA-CS-006 6.4 AC

1.6 7 - Structure Seeding IA-CS-006 0.7* AC

1.7 8 - Drain Tile Investigation IA-CS-009 5 HR

1.8 9 - Drain Tile Removal IA-CS-009 200 LF

1.9 10 - Steel Sheet Piling IA-CS-013 1202 SF

1.10 11 - Excavation (General) IA-CS-021 3535 CY

1.11 12 - Excavation (Core Trench) IA-CS-021 320 CY

1.12 13 - Earthfill (Submerged Berms) IA-CS-023 203 CY

1.13 14 - Earthfill (General Dam & Core) IA-CS-023 2299 CY

1.14 15 - Earthfill (General Stockpiling & Wasting)

IA-CS-023 807 CY

1.15 16 - Topsoil Placement IA-CS-026 3619 CY

17 - Corrugated Polyethylene Tubing (Non-perforated):

1.16 A 8-inch IA-CS-046 1672 LF

18 - Corrugated Polyethylene Tubing (Perforated):

1.17 A 4-inch (Toe-Drain) IA-CS-046 256 LF

19 - Corrugated profile Wall (Dual Wall) Polyethylene Pipe

1.18 A 12-inch IA-CS-046 49 LF

20 - Drain Tile Connections

1.19 A 6-inch IA-CS-046 5 EA

1.20 B 4-inch IA-CS-046 22 EA

1.21 21 - Stoplog Storage Structure IA-CS-046 1 EA

1.22 22 - Water Control Structure Assembly IA-CS-051 1 EA

1.23 23 - 12-inch Tile Outlet IA-CS-051 4 EA

1.24 24 - Riprap, Class E IA-CS-061 437 TON

1.25 25 - Granular Foundation Material IA-CS-061 44.5 TON

1.26 26 - Road Access Driveway IA-CS-061 1 EA

1.27 27 - Concrete Grout IA-CS-062 87 CY

*IMPACS will not accept an amount less than 1. Enter a unit price for 1 unit, and the bid tabulation will be adjusted based on the engineer's estimated quantity.

TOTAL BASE BID………………………………………………………………………………………$________________

Worksheet purposes only. Bids will only be accepted through the on-line Iowa Management of Procurement & Contracts System (IMPACS).

To register and learn about IMPACS, go to:https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa

END OF DOCUMENT CC

Attachment No. 2

Revised set of Plans

30398-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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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

NUTRIENT REDUCTION WQI WETLAND

FLOYD COUNTY, IOWA

PROJECT INDEX:

PROJECT

ADDRESS / LOCATION:

OCEAN AVE

FLOYD, IA 50435

SECTION 28, T97N, R16W

CEDAR TWP

FLOYD COUNTY, IOWA PROJECT MANAGER: SPENCER PECH

EMAIL: SPENCER.PECH@ISGINC.COM

IDALS FLO971628B

ISG PROJECT # 23-30398

PROJECT LOCATION

B.M. ELEVATION=1087.60

TIE IN EAST SIDE OF POWERPOLE

NORTHING: 9809811.97

EASTING: 12499354.21

MANAGING OFFICE:

TOPOGRAPHIC SURVEY

THIS PROJECT'S TOPOGRAPHIC SURVEY CONSISTS

OF DATA COLLECTED IN MARCH, 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), ZONE 2, ON THE IOWA

REGIONAL 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 FLOYD COUNTY'S

REQUIREMENTS AND WITH THE 2023 EDITION OF THE NATURAL

RESOURCES CONSERVATION SERVICE PRACTICE 656

(CONSTRUCTED WETLAND), 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).

23-30398

C0-10 TITLE

---- ---- C0-10

C0-10

CONSTRUCTION PLANS

FLOYD COUNTY IOWA

335 CEDAR STREET

SUITE 200

WATERLOO, IA 50701

PHONE: 319.234.1515

WATERLOO OFFICE

TITLE

OBO

SDP/JJJ

SDP

SHEET INDEX

NUTRIENT

REDUCTION WQI

WETLAND

IDALS

FLO971628B

C0-10 TITLE

C0-20 CONSTRUCTION NOTES

C0-21 ESTIMATE REFERENCE

C0-22 DETAILS

C0-23 DETAILS

C0-24 DETAILS

C0-25 DETAILS

C0-26 DETAILS

C0-27 SHEET PILE STRUCTURE

C2-10 EXISTING SITE & REMOVAL PLAN

C3-10 SITE PLAN

C3-30 SOUTH TILE INTERCEPT PROFILE

C3-31 SOUTH TILE INTERCEPT PROFILE

C3-32 NORTH TILE INTERCEPT PROFILE

C3-33 NORTH TILE INTERCEPT PROFILE

C3-34 ALTERNATIVE OUTLET PROFILE

C4-10 OVERALL GRADING PLAN

C4-21 FOREBAY DETAILED GRADING

C4-22 BERM PROFILE

C4-23 POOL CROSS SECTION

C5-10 SITE RESTORATION PLAN

T97N

R1 6W

Printed or typed name

(signature) (date)

License number

SEAL

WIO A

LI

CE

NS

ED

PROFESS IONAL ENGINEER

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:

SPENCER D.

PECH

28161

SPENCER D. PECH

ALL SHEETS

28161

TO THE BEST OF MY PROFESSIONAL KNOWLEDGE, JUDGEMENT,

BELIEF, THE PLANS MEET APPLICABLE NRCS STANDARDS.

ENGINEER'S SIGNATURE DATE

I HAVE REVIEWED AND AGREE WITH THE CONTENTS OF THE

PLAN AND SPECIFICATIONS AS PREPARED.

LANDOWNER SIGNATURE DATE

CONTRACTOR IS RESPONSIBLE FOR CALLING IOWA ONE CALL

ONE CALL TICKET NO.

IF A CULTURAL RESOURCE IS IDENTIFIED DURING

CONSTRUCTION, WORK WILL STOP IMMEDIATELY AND THE

LOCAL NRCS FIELD OFFICE WILL BE NOTIFIED.

I CERTIFY THAT THIS PRACTICE HAS BEEN CONSTRUCTED IN

ACCORDANCE WITH THE PLANS AND SPECIFICATIONS.

CONTRACTORS SIGNATURE DATE

ENGINEER'S REP. SIGNATURE DATE

IA NRCS JOB CLASS IV

3-26-25

03-26-25

1. RIPRAP IS TO BE CLASS E REVETMENT STONE AS DEFINED BY SECTION 4130 OF THE CURRENT IDOT STANDARD SPECIFICATIONS FOR HIGHWAY AND BRIDGE CONSTRUCTION AND SCREENED OVER AN 8" GRIZZLY SEPARATOR. TAKE CARE TO NOT DAMAGE EXPOSED PVC PIPING WHEN PLACING RIPRAP, WHERE APPLICABLE.

2. STRIPPING - ALL EXCAVATIONS AND FILL AREAS ARE TO BE STRIPPED OF TWELVE (12) INCHES OF TOPSOIL (UNLESS OTHERWISE DIRECTED BY PLAN NOTE) TO REMOVE VEGETATION.

3. POOL GRADING AREAS INVOLVE EXCAVATION OF THE DESIGNATED AREAS SHOWN TO THE ELEVATION ON THE PLAN. WASTE SPOIL IN DESIGNATED AREAS OR AS DIRECTED BY ENGINEER.

AREAS RECEIVING WASTE SOILS SHALL BE SHAPED TO DRAIN TOWARD POOL AREA. POOL GRADING SPOIL MUST BE LOCATED AT DESIGNATED LOCATION AS SHOWN ON SHEET C4-10.

4. TOPSOIL - ALL EXPOSED BORROW AREA AND POOL GRADING AREA SURFACES SHALL BE TOPSOILED TO A MINIMUM DEPTH OF EIGHT (8) INCHES.

5. THE BERM SURFACE SHALL BE TOPSOILED TO A MINIMUM DEPTH OF EIGHT (8) INCHES.

6. EXCESS TOPSOIL TO BE WASTED IN AN AREA OUTSIDE OF THE POOL DESIGNATED BY THE ENGINEER.

7. ALL AREAS UNDER STRUCTURE FILL SHALL BE SCARIFIED TO A DEPTH OF SIX (6) INCHES AND BE RECOMPACTED IN ACCORDANCE WITH STD. SPEC. IA-23, SECTION 6, METHOD 2.

8. EARTHFILL - CONTRACTOR TO ENSURE ADEQUATE MOISTURE AND DENSITY THROUGHOUT CONSTRUCTION. COMPACTION IS TO BE PERFORMED IN ACCORDANCE WITH SPEC. IA-23

EARTHFILL.

9. FILL SHALL BE PLACED IN LOOSE LIFTS NO THICKER THAN NINE (9) INCHES. ENGINEER MAY DIRECT THINNER LIFTS BASED ON AVAILABLE COMPACTION EQUIPMENT.

10. UTILITIES - CONTRACTOR IS RESPONSIBLE FOR CALLING IOWA ONE CALL: 1-800-292-8989 AND PROTECTION OF ALL UTILITIES.

11. EXISTING TILE - CONTRACTOR IS RESPONSIBLE FOR FIELD VERIFYING EXISTING TILE LOCATIONS AND ELEVATIONS, PRIOR TO INSTALLING NEW TILE.

12. SAFETY - ALL WORK SHALL BE DONE ACCORDING TO OSHA STANDARDS FOR PROTECTION OF LIFE. NOTHING INDICATED ON THE DRAWINGS SHALL RELIEVE THE CONTRACTOR FROM

COMPLYING WITH ANY APPROPRIATE SAFETY REGULATION.

13. ENCOUNTERED TILE - ALL TILE LINES UNDER FOOT PRINT OF STRUCTURE AND POOL ARE TO BE LOCATED AND REMOVED AND REROUTED AS SHOWN ON PLANS.

14. CONTRACTOR SHALL IMMEDIATELY REPORT TO ENGINEER ALL PREVIOUSLY UNKNOWN TILE LINES ENCOUNTERED DURING THE WORK AND LEAVE THE TILE LINES UNCOVERED FOR

EVALUATION BY ENGINEER.

15. CONTROL - CONTRACTOR IS TO PROTECT ALL CONTROL POINT AND WORK LIMIT PINS SET PRIOR TO CONSTRUCTION.

16. SLOPES - BORROW SITES AND POOL GRADING AREAS SHALL BE GRADED WITH A MINIMUM CUT/FILL SLOPE OF 3H:1V.

17. SOILS - CONTRACTOR SHALL OBTAIN FILL FOR STRUCTURE FROM AREAS DESIGNATED ON PLANS.

18. WATER - CONTRACTOR IS RESPONSIBLE FOR MAINTAINING DRAINAGE THROUGHOUT CONSTRUCTION TO ENSURE FAVORABLE WORKING CONDITIONS, INCLUDING DEWATERING AS

NECESSARY.

19. CONTRACTOR IS RESPONSIBLE FOR PROVIDING WATER TO ENSURE SOILS MEET MINIMUM MOISTURE REQUIREMENTS.

20. EQUIPMENT STAGING - CONTRACTOR TO DESIGNATE EQUIPMENT STAGING AREA AT PRECONSTRUCTION MEETING.

21. ACCESS SHALL BE COORDINATED WITH THE LANDOWNER PRIOR TO MOBILIZATION.

22. CONCRETE WASHOUT: A DESIGNATED CONCRETE WASHOUT LOCATION SHALL BE PROVIDED. WASHOUT AREA SHALL NOT BE IN THE WETLAND AREA.

23. SUPPLEMENTAL DETAILS:

23.1. SUDAS 9040.119 - SILT FENCE

23.2. SUDAS 9040.105 - WATTLE

23.3. SUDAS 9040.120 - STABILIZED CONSTRUCTION EXIT

WETLAND CONSTRUCTION NOTES

PROJECT GENERAL NOTES

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 REQUIRED TO CONTACT "IOWA ONE

CALL" FOR UTILITY LOCATIONS A MINIMUM OF 2 BUSINESS

DAYS PRIOR TO ANY EXCAVATION / CONSTRUCTION

(1-800-292-8989).

10. IF A CULTURAL RESOURCE IS IDENTIFIED DURING

CONSTRUCTION, STOP IMMEDIATELY AND NOTIFY THE LOCAL

NATURAL RESOURCES CONSERVATION SERVICE OFFICE.

11. ALL CONSTRUCTION ACTIVITIES SHALL BE IN COMPLIANCE

WITH NRCS NATIONAL AND STATE UTILITY SAFETY POLICY

(NEM PART 503-SAFETY, SUBPART A - ENGINEERING

ACTIVITIES AFFECTING UTILITIES 503.00 THROUGH 503.06)

12. CONSTRUCTION CONTRACT BETWEEN CONTRACTOR AND

IDALS, PLANS, SPECIFICATIONS, PROJECT MANUAL, AND

ADDENDA. ANY MODIFICATIONS MUST BE APPROVED BY

IDALS.

13. NRCS DOES NOT GUARANTEE THAT THE POND WILL FILL

AND/OR REMAIN FILLED WITH WATER TO THE PRINCIPAL

SPILLWAY CREST ELEVATION.

14. PROPOSED DESIGN MEETS PRACTICE STANDARD DESIGN

CRITERIA AND COMPLIES WITH APPLICABLE LAWS AND

REGULATIONS SET FORTH IN 210-NEM-505.

CONSERVATION PRACTICE STANDARDS

PRIMARY

656: CONSTRUCTED WETLAND

SUPPORTING

327: CONSERVATION COVER

342: CRITICAL AREA PLANTING

356: DIKE OR LEVEE

378: POND

410: GRADE STABILIZATION STRUCTURE

587: STRUCTURE FOR WATER CONTROL

606: SUBSURFACE DRAIN

620: UNDERGROUND OUTLET

Bid Item Sub Item Description Spec. Ref Shop Drawing Required Inspection or Survey

1 - Mobilization & Demobilization CS-008

2 - Site Stripping & Preparation IA-CS-001 Inspection: verify topsoil strip depth Review: by survey or contractor equipment (laser level, machine control)

3 - Crop Damage IA-CS-001 Inspection: area damaged Review: engineer's survey of damaged area

4 - Silt Fence IA-CS-005 X Inspection: verify proper installation and total linear feet of material Review:

visual

5 - Straw Wattle IA-CS-005 X Inspection: verify proper installation and total linear feet of material Review:

visual

6 - Buffer Seeding IA-CS-006 X Inspection: seed bed preperation Review: visual

7 - Structure Seeding IA-CS-006 X Inspection: seed bed preperation Review: visual

8 - Drain Tile Investigation IA-CS-009 Inspection: encountered drain tile not shown on plans Review: visual inspection + survey as conditions dictate

9 - Drain Tile Removal IA-CS-009

10 - Steel Sheet Piling IA-CS-013 X Inspection: confirmation of sheet length prior to driving, visual inspection of driving, and survey of final elevations Review: visual and survey

11 - Excavation (General) IA-CS-021 Inspection: soils suitability for earthen berm and core trench Review: visual, non-destructive field testing (ribboning)12 - Excavation (Core Trench) IA-CS-021

13 - Earthfill (Submerged Berms) IA-CS-023 Inspection: Compaction of earthern berm and core trench, ensure proper method is utilized Review: visual, field testing as required (proof roll, denting)14 - Earthfill (General Dam & Core) IA-CS-023

15 - Earthfill (General Stockpiling & Wasting) IA-CS-023 Inspection: Final grading Review: visual + survey as conditions dictate

16 - Topsoil Placement IA-CS-026 Inspection: subgrade to verify topsoiling depth Review: by survey or contractor equipment (laser level, machine control)

17 - Corrugated Polyethlylene Tubing (Non-perforated):

IA-CS-046 X

Inspection: Initial blinding, use of ASTM Class 2 backfill Review: visual, engineer supplied pipe crawler (if conditions dictate), survey of flow line elevations upon notice from contractorA 8-inch

18 - Corrugated Polyethlylene Tubing (Perforated):

IA-CS-046 X

Inspection: Initial blinding, use of ASTM Class 2 backfill Review: visual, engineer supplied pipe crawler (if conditions dictate), survey of flow line elevations upon notice from contractorA 4-inch (Toe-Drain)

19 - Corrugated profile Wall (Dual Wall) Polyethlyene Pipe

IA-CS-046 X

Inspection: Initial blinding, use of ASTM Class 2 backfill Review: visual, engineer supplied pipe crawler (if conditions dictate), survey of flow line elevations upon notice from contractorA 12-inch

20 - Drain Tile Connections

IA-CS-046 Inspection: soil tight joint Review: visualA 6-inch

B 4-inch

21 - Stoplog Storage Structure IA-CS-046 X

22 - Water Control Structure Assembly IA-CS-051 X Inspection: sub-grade prep and concrete base, verification of flowlines Review: visual and survey

23 - 12-inch Tile Outlet IA-CS-051 X Inspection: soil tight joint Review: visual

24 - Riprap, Class E IA-CS-061 X Inspection: Subgrade preperation with base (less around riser), final installation Review: visual, survey or contractor equipment (laser level, machine control) as conditions dictate

25 - Granular Foundation Material IA-CS-061 X Inspection: sub-grade conditions that require foundation Review: visual

26 - Road Access Driveway IA-CS-061 X Inspection: final grading and surfacing placement Review: visual and survey as conditions dictate

27 - Concrete Grout IA-CS-062 X Inspection: pouring/installation of grout Review: visual

Note: Provide Engineer with 48 hours notice prior to anticipated inspection date

ITEMS OF WORK TABLE

INSPECTION TABLE

30398-C0-DETAILS

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

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S:

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C0-20

C0-20 CONSTRUCTION NOTES

23-30398

C0-20

CONSTRUCTION

NOTES

IOWAFLOYD COUNTY

SDP

SDP/JJJ

OBO

NUTRIENT

REDUCTION WQI

WETLAND

IDALS

FLO971628B

ITEM NO. ITEM CODE DESCRIPTION

1 CS-008 MOBILIZATION AND DEMOBILIZATION

INCLUDES PREPARATORY WORK AND OPERATIONS INCLUDING, BUT NOT LIMITED TO, THOSE

NECESSARY FOR THE MOVEMENT OF PERSONNEL, EQUIPMENT, SUPPLIES, AND INCIDENTALS TO THE PROJECT SITE; SIGN INSTALLATION; FOR THE ESTABLISHMENT OF ALL CONTRACTOR FACILITIES

NECESSARY FOR WORK ON THE PROJECT; AND FOR ALL OTHER WORK AND OPERATIONS WHICH

MUST BE PERFORMED, OR COST INCURRED BEFORE BEGINNING WORK ON THE VARIOUS ITEMS ON THE PROJECT SITE INCLUDING BONDS AND INSURANCE. MOBILIZATION PAYMENT WILL BE PRORATED

BASED ON PERCENT OF COMPLETED WORK. SEE SPECIFICATIONS CS-008 FOR DETAILS.

2 IA-CS-001 SITE STRIPPING & PREPARATION

ITEM IS FOR CLEARING AND GRUBBING OF TREES, LOGS, STUMPS, ROOTS, HEDGE, BRUSH, FENCE, SIGNS, VEGETATION, AND ANY OTHER DEBRIS LOCATED IN THE PROJECT AREA. ITEM ALSO INCLUDES STRIPPING OF TOPSOIL TO THE DEPTH INDICATED IN THE PLANS AND STOCKPILING TOPSOIL IN DESIGNATED AREAS. (EST 4,000 CY) QUANTITIES SHALL BE CONSIDERED FINAL. SOME GRUBBED MATERIAL MAY BE PILED EAST OF THE WETLAND SITE WITH PERMISSION FROM THE LANDOWNER, ALL REMAINING MATERIAL SHALL BE BURNED OR DISPOSED OF OFFSITE. CONTRACTOR IS

RESPONSIBLE FOR BURNING AND BURYING IN ACCORDANCE WITH ALL LOCAL AND STATE

REGULATIONS.

3 IA-CS-001 Crop Damage

INCLUDES CROP DAMAGE THAT RESULTS FROM CONSTRUCTION ACTIVITES. IT IS RECOMMENDED

THE CONTRACTOR REMOVE CORN RESIDUE RATHER THAN KNOCK IT DOWN. THE EXACT LOCATION

OF CROP DAMAGE WILL BE DETERMINED DURING CONSTRUCTION AND MEASURED TO THE NEAREST

0.1 ACRE

4 IA-CS-005 SILT FENCE

INCLUDES FURNISHING AND INSTALLING SILT FENCE PER SUDAS SPECIFICATIONS. SILT FENCE IS

SHOWN ON THE SITE RESTORATION PLAN SHEET. SILT FENCE LOCATIONS AND SIZES ARE

APPROXIMATE. EXACT LOCATION AND LENGTH OF SILT FENCE NEEDED WILL BE DETERMINED

DURING CONSTRUCTION. IF ACCUMULATED SEDIMENT REACHES A LEVEL ONE-HALF THE HEIGHT OF

THE FENCE, REVMOCE THE ACCUMULATED SEDIMENT. THE SILT FENCE SHALL BE CAREFULLY

INSPECTED AND ANY MAINTENANCE NEEDED SHALL BE INCLUDED IN BID ITEM.

5 IA-CS-005 STRAW WATTLE

TO BE USED AROUND WETLAND AND SPOIL PLACEMENT SITES AND AS NEEDED FOR EROSION

CONTROL. INCLUDES PLACEMENT, MAINTENANCE, REMOVAL, AND OFFSITE DISPOSAL OF SEDIMENT, AND REMOVAL OF DEVICE. REFER TO THE SITE RESTORATION PLAN SHEET. EXACT LOCATION AND

LENGTH OF WATTLES NEEDED WILL BE DETERMINED DURING CONSTRUCTION.

6 IA-CS-006 BUFFER SEEDING

INCLUDES ALL MATERIALS, EQUIPMENT AND LABOR REQUIRED TO PREPARE SEED BED, SEED,

FERTILIZE AND MULCH AND ESTABLISH GROWTH IN DISTURBED AREAS. USE BUFFER SEEDING MIX IN IA CS-006 SPECIFICATION SEED BED PREPARATION SHALL BE REVIEWED AND ACCEPTED BY ENGINEER PRIOR TO SEEDING. ALL ROCKS AND CLODS LARGER THAN GOLF BALL SIZE SHALL BE REMOVED FROM THE SEED BED. WEED CONTROL IS RESPONSIBILITY OF CONTRACTOR. INCLUDES SUPPLEMENTAL

WATERING AS REQUIRED AND RESEEDING AREAS OF NON-GERMINATION.

7 IA-CS-006 STRUCTURE & CHANNEL SEEDING

INCLUDES ALL MATERIALS, EQUIPMENT AND LABOR REQUIRED TO PREPARE SEED BED, SEED,

FERTILIZE AND MULCH AND ESTABLISH GROWTH IN DISTURBED AREAS. USE STRUCTURE AND

WATERWAY/CHANNEL SEEDING MIX IN IA CS-006 SPECIFICATION. SEED BED PREPARATION SHALL BE REVIEWED AND ACCEPTED BY ENGINEER PRIOR TO SEEDING. ALL ROCKS AND CLODS LARGER THAN GOLF BALL SIZE SHALL BE REMOVED FROM THE SEED BED. WEED CONTROL IS RESPONSIBILITY OF

CONTRACTOR. INCLUDES SUPPLEMENTAL WATERING AS REQUIRED AND RESEEDING AREAS OF

NON-GERMINATION.

8 IA-CS-009 DRAIN TILE INVESTIGATION

ALL EXPLORATORY INVESTIGATION IS TO BE COMPLETED BY THE CONTRACTOR PRIOR TO ANY TILE WORK, UNLESS SPECIFICALLY DIRECTED BY THE ENGINEER TO PROCEED DIFFERENTLY. CONTRACTOR IS TO GIVE ENGINEER (712-732-7745) 48 HOURS NOTICE PRIOR TO PERFORMING ANY EXPLORATORY INVESTIGATION WORK. CONTRACTOR IS ENCOURAGED TO PERFORM EXPLORATORY EXCAVATION OF

EXISTING UTILITIES AS SOON AS POSSIBLE TO ALLOW PROPER LEAD TIME FOR CONFLICT

RESOLUTION, IF NECESSARY.

9 IA-CS-009 DRAIN TILE REMOVAL

INCLUDES EXCAVATION; REMOVAL AND DISPOSAL OF EXISTING TILE; AND PLACING, COMPACTING, AND GRADING OF BACKFILL. CONTRACTOR IS TO REMOVE TILE ONLY IN AREAS SPECIFIED IN THE

PLANS UNLESS OTHERWISE DIRECTED BY THE ENGINEER. MUCH OF THE REMOVAL IS TO OCCUR

WITHIN OR NEAR THE PROPOSED POOL AREA AND CAN BE COMPLETED WHILE GRADING THE POOL.

ALL REMOVED TILE SHALL BECOME PROPERTY OF THE CONTRACTOR. INSTALLING CAPS ON THE TILE

TO REMAIN IN PLACE IS INCIDENTAL TO THIS BID ITEM.

10 IA-CS-013 STEEL SHEET PILING

INCLUDES FURNISHING AND DRIVING THE SPECIFIED SHEET PILING AT THE LOCATION SHOWN ON THE DRAWINGS. PILING SHALL BE DRIVEN IN A MANNER SO AS TO ENSURE PERFECT INTERLOCKING THROUGHOUT THE ENTIRE LENGTH OF EACH PILE. PILING SHALL BE DRIVEN TO THE FULL DEPTH

SHOWN ON THE DRAWINGS UNLESS OTHERWISE APPROVED BY THE ENGINEER. THE CONTRACTOR

SHALL CUT THE PILING OFF AT THE SPECIFIED ELEVATIONS. PILING LENGTH SHALL BE SUFFICIENT TO

PERMIT REMOVAL OF ALL MATERIALS DAMAGED BY DRIVING.

11 IA-CS-021 EXCAVATION (GENERAL)

REFER TO GRADING PLANS FOR DETAILS AND SHEET C4-10 FOR THE EARTHWORK SUMMARY.

QUANTITIES SHALL BE CONSIDERED FINAL AND NO ADDITIONAL PAYMENT WILL BE ALLOWED.

INCLUDES REMOVAL AND GRADING TO FINAL SUBGRADE ELEVATIONS, AS WELL AS SCARIFICATION

AND COMPACTION OF THE EXPOSED CUT SURFACES.

12 IA-CS-021 EXCAVATION (CORE TRENCH)

REFER TO ITEM NUMBER 11

13 IA-CS-023 EARTHFILL (SUBMERGED BERM - METHOD 1)

REFER TO GRADING PLANS FOR DETAILS. INCLUDES PLACEMENT AND GRADING OF SUBMERGED

BERMS WITHIN THE WETLAND AREA TO FINAL PLAN ELEVATIONS, METHOD 1 COMPACTION WILL BE REQUIRED IN THIS AREA. ADDITIONAL MATERIAL IS TO BE WASTED IN THE SPOILS PLACEMENT AREA

TO THE EAST OF THE WETLAND.

14 IA-CS-023 EARTHFILL (GENERAL DAM - METHOD 2)

REFER TO GRADING PLANS FOR DETAILS. INCLUDES PLACEMENT AND GRADING TO FINAL SUBGRADE ELEVATIONS. METHOD 2 COMPACTION IS REQUIRED, REFER TO SPECIFICATIONS FOR DETAILS.

MATERIAL EXCAVATED FOR THE CORE TRENCH MAY BE REUSED AS FILL, IF MATERIAL IS SUITABLE.

ALL OTHER BORROW MATERIAL IS EXPECTED TO COME FROM THE POOL GRADING AND FOREBAY

AREAS.

15 IA-CS-023 EARTHFILL (GENERAL STOCKPILING)

REFER TO GRADING PLANS FOR DETAILS. INCLUDES PLACEMENT AND GRADING OF EXCESS MATERIAL IN THE SPOILS PLACEMENT AREA TOT HE EAST OF THE WETLAND, METHOD 1 COMPACTION WILL BE

REQUIRED IN THIS AREA.

16 IA-CS-026 TOPSOIL PLACEMENT

THE PROJECT AREA SHALL BE DRESSED WITH A MINIMUM OF 8" OF TOPSOIL IN AREAS DESIGNATED ON THE PLANS. ANY EXCESS TOPSOIL SHALL BE SPREAD IN THE DESIGNATED AREA EAST OF THE

WETLAND, UNLESS OTHERWISE DIRECTED BY ENGINEER OR LANDOWNER.

17 IA-CS-046 CORRUGATED POLYETHYLENE TUBING (NON-PERFORATED)

INCLUDES TRENCH EXCAVATION AND INSTALLATION OF PIPE ACCORDING TO PLANS AND

SPECIFICATIONS. ITEM INCLUDES LINEAR MEASUREMENT THROUGH ALIGNMENT TURNS,

PREFABRICATED ELBOWS, AND TEE SECTIONS. FABRICATION AND INSTALLATION OF FITTINGS AND ANTI-SEEP COLLARS IS INCIDENTAL TO THIS ITEM. MATERIAL SHALL BE STANDARD POLYETHYLENE TUBING AS SPECIFIED IN IA-CS-046. PIPE IS TO BE LAID IN ACCORDANCE WITH SPOON OR FLAT

BOTTOM TRENCH (SEE DETAILS). ITEM INCLUDES ALL GRANULAR BEDDING AND ENCASEMENT

MATERIAL TO MEET INSTALLATION REQUIREMENTS. AN UNSTABLE TRENCH BOTTOM SHALL BE

STABILIZED WITH GRANULAR FOUNDATION MATERIAL UPON APPROVAL FROM THE ENGINEER.

GRANULAR FOUNDATION MATERIAL, IF APPROVED BY ENGINEER, WILL BE PAID UNDER A SEPERATE BID ITEM. ITEM ALSO INCLUDES ALL SHORING/BRACING REQUIRED FOR SURROUNDING UTILITIES AND STRUCTURES TO PROPERLY INSTALL PIPE. CONTRACTOR SHALL FIELD VERIFY UTILITY LOCATIONS

AND ELEVATIONS. SUBSIDIARY TO THIS BID ITEM IS THE SEPARATION OF SOILS DURING

INSTALLATION. ALL EFFORTS SHALL BE MADE DURING CONSTRUCTION TO SEPARATE SOIL TYPES.

BACKFILL SHALL BE COMPACTED PRIOR TO PLACEMENT OF TOPSOIL. TOPSOIL SHALL BE PLACED TO A

MINIMUM OF 18", OR UNIFORM TO THE TOPSOIL DEPTH OF THE SURROUNDING AREA.

18 IA-CS-046 CORRUGATED POLYETHYLENE TUBING (PERFORATED)

REFER TO ITEM NUMBER 17

19 IA-CS-046 CORRUGATED PROFILE WALL (DUAL WALL) POLYETHYLENE PIPE

INCLUDES TRENCH EXCAVATION AND INSTALLATION OF PIPE ACCORDING TO PLANS AND

SPECIFICATIONS. ITEM INCLUDES LINEAR MEASUREMENT THROUGH ALIGNMENT TURNS,

PREFABRICATED ELBOWS, AND TEE SECTIONS. FABRICATION AND INSTALLATION OF FITTINGS AND ANTI-SEEP COLLARS IS INCIDENTAL TO THIS ITEM. MATERIAL SHALL BE HIGH DENSITY POLYETHYLENE WITH GASKETED JOINTS AS SPECIFIED IN IA-CS-046. PIPE IS TO BE LAID IN ACCORDANCE WITH SPOON OR FLAT BOTTOM TRENCH (SEE DETAILS). ITEM INCLUDES ALL GRANULAR BEDDING AND

ENCASEMENT MATERIAL TO MEET INSTALLATION REQUIREMENTS. AN UNSTABLE TRENCH BOTTOM

SHALL BE STABILIZED WITH GRANULAR FOUNDATION MATERIAL UPON APPROVAL FROM THE

ENGINEER. GRANULAR FOUNDATION MATERIAL, IF APPROVED BY ENGINEER, WILL BE PAID UNDER A SEPERATE BID ITEM. ITEM ALSO INCLUDES ALL SHORING/BRACING REQUIRED FOR SURROUNDING UTILITIES AND STRUCTURES TO PROPERLY INSTALL PIPE. CONTRACTOR SHALL FIELD VERIFY UTILITY LOCATIONS AND ELEVATIONS. SUBSIDIARY TO THIS BID ITEM IS THE SEPARATION OF SOILS DURING INSTALLATION. ALL EFFORTS SHALL BE MADE DURING CONSTRUCTION TO SEPARATE SOIL TYPES.

BACKFILL SHALL BE COMPACTED PRIOR TO PLACEMENT OF TOPSOIL. TOPSOIL SHALL BE PLACED TO A

MINIMUM OF 18", OR UNIFORM TO THE TOPSOIL DEPTH OF THE SURROUNDING AREA.

20 IA-CS-045 MISC. DRAIN TILE REPAIRS AND CONNECTIONS

ITEM IS TO BE USED FOR CONNECTING ANY TILE PREVIOUSLY CONNECTED TO THE EXISTING TILE, CONNECTING BASIN DRAINS, AND EMERGENCY REPAIR OF UNKNOWN TILE ACCIDENTALLY DAMAGED

DURING CONSTRUCTION. ITEM INCLUDES ANY FITTINGS, GRANULAR MATERIAL, CONCRETE, OR

OTHER MATERIALS REQUIRED TO REPAIR AND/OR CONNECT THE TILE TO THE PROPOSED PIPE, AND UP TO 20 LF OF TUBING TO MAKE CONNECTIONS. ITEM ALSO INCLUDES THE KEEPING AND DELIVERY

OF A LOG OF CONNECTIONS MADE, AND APPROPRIATE CRUSH AND BURY OR REMOVAL AND

DISPOSAL OF EXISTING TILE MATERIAL.

21 IA-CS-046 STOPLOG STORAGE STRUCTURE

ITEM INCLUDES PIPE AND END CAP AS SHOWN IN THE PLANS. ITEM ALSO INCLUDES ALL

EXCAVATION, COMPACTED ROCK, BEDDING AND BACKFILL.

22 IA-CS-051 WATER CONTROL STRUCTURE ASSEMBLY

ITEM INCLUDES FURNISHING AND INSTALLATION OF THE CMP RISER INLET STRUCTURE, CMP WATER

CONTROL STRUCTURE WITH STOPLOG CHANNEL, STOPLOGS, CONCRETE BASE, DRAWDOWN PIPE,

AND 12” CMP PIPE AS SHOWN ON THE PLANS. ITEM ALSO INCLUDES ALL EXCAVATION, PLACING, COMPACTING BACKFILL MATERIAL, AND PIPE CONNECTIONS AND ANTI-SEEP COLLARS REQUIRED FOR THE WATER CONTROL STRUCTURE ASSEMBLY, LABOR, AND OTHER MATERIALS NECESSARY FOR THE

INSTALLATION OF THE WATER CONTROL STRUCTURE ASSEMBLY.

23 IA-CS-051 TILE OUTLET

ITEM INCLUDES FURNISHING AND INSTALLATION OF THE 20 LF CMP TILE OUTLET, CONCRETE COLLAR, AND ANIMAL GUARD. TILE OUTLET PIPE SHOULD HAVE A MINIMUM GRADE OF 1%. THE OUTLET

INVERT SHOULD BE A MINIMUM OF 1-FOOT ABOVE THE NORMAL POOL ELEVATION IN WHICH IT IS

DRAINING INTO.

24 IA-CS-061 RIPRAP

MATERIAL SHALL COMPLY WITH GRADATION OF IOWA DOT SPECIFICATION 4130.02, CLASS E.

PAYMENT WILL BE FOR ACTUAL TONS PLACED BASED ON SCALE TICKETS.

25 IA-CS-061 GRANULAR FOUNDATION MATERIAL

INCLUDES FURNISHING, STOCKPILING, AND INSTALLING THE SPECIFIED MATERIAL. MATERIAL SHALL

MEET ASTM D2321 CLASS 1 (CRUSHED ROCK, ANGULAR). MATERIAL MUST BE CRUSHED AND

ANGULAR, ROUNDED PEBBLES, STONES OR "RIVER ROCK" WILL NOT BE ACCEPTED. ITEM WILL ONLY

BE PAID FOR RIPRAP/EROSION FILTER STONE AND HDPE DUAL-WALL PIPE BEDDING, UPON

APPROVAL OF ENGINEER. GRANULAR FOUNDATION MATERIAL USED FOR OTHER BID ITEMS, SUCH AS STRUCTURE FOUNDATION OR TILE CONNECTIONS, IS CONSIDERED INCIDENTAL TO THAT SPECIFIC BID

ITEM AND WILL NOT BE PAID UNDER THIS ITEM.

26 IA-CS-061 ROAD ACCESS DRIVEWAY

INCLUDES THE CONSTRUCTION OF A PERMANENT STABLILIZED DRIVEWAY AND CULVERT AS SHOWN

ON PLANS AND IN ACCORDANCE WITH FLOYD COUNTY SECONDARY ROADS. ITEM INCLUDES

APPROXIMATLEY 14 TONS OF GRANULAR MATERIAL TO STABILIZE DRIVEWAY.

27 IA-CS-062 CONCRETE GROUT

INCLUDES FURNISHING AND PLACING OF CONCRETE GROUT ON THE PORTIONS OF RIPRAP AS

INDICATED IN THE PLANS. GROUT SHALL BE CONSOLIDATED INTO THE VOIDS WITH THE USE OF A CONCRETE VIBRATOR. THE GROUT APPLICATION SHALL BE ADJUSTED TO ENSURE THAT VOIDS ARE

PROPERLY FILLED THROUGH THE ENTIRE RIPRAP DEPTH AND SHALL NOT CREATE A SMOOTH

SURFACE. UNUSED OR WASTED GROUT WILL BE ESTIMATED AND DEDUCTED FROM PAYMENT

VOLUME BY THE ENGINEER OR ENGINEER'S REPRESENTATIVE.

30398-C0-DETAILS

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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---- ---- C0-21

C0-21 ESTIMATE REFERENCE

23-30398

C0-21

ESTIMATE

REFERENCE

SDP/JJJ

OBO

NUTRIENT

REDUCTION WQI

WETLAND

HDPE SPOON TRENCH

NTS

PIPE IDUNDISTURBED SOIL

BACKFILL WITH TRENCH MATERIAL

(24" LIFTS)

SPOON EXTENTS

PLACE GRANULAR ENCASEMENT

MATERIAL (MECHANICALLY

COMPACT TO 6" ABOVE PIPE

IN 6" LIFTS)

6"

NOTES:

1. GRANULAR ENCASEMENT AND BACKFILL SHALL BE INCIDENTAL TO CONSTRUCTION.

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

3. ALL PIPE WITH A FILL HEIGHT GREATER THAN 15-FEET SHALL BE FULLY ENCASED IN

ASTM CLASS I MATERIAL.

FIL

L H

EI

GH

T (V

AR

IE

S)

HDPE FLAT BOTTOM TRENCH

WITH GRANULAR FOUNDATION

NTS

NOTES:

1. GRANULAR BEDDING, GRANULAR ENCASEMENT, AND BACKFILL SHALL BE

INCIDENTAL TO CONSTRUCTION.

2. GRANULAR FOUNDATION BELOW THE PIPE SHALL BE PAID FOR BY THE CUBIC YARD,

ONLY WHERE APPROVED BY THE FIELD ENGINEER.

3. ALL PIPE WITH A FILL HEIGHT GREATER THAN 15-FEET SHALL BE FULLY ENCASED IN

ASTM CLASS I MATERIAL.

4. THE SHOE WIDTH SHALL BE THE SAME AS THE COMPACTING MECHANISMS WIDTH

OR THE PIPE MANUFACTURER'S SPECIFICATIONS, WHICHEVER IS GREATER.

PIPE ID

UNDISTURBED SOIL

SHOE SHOE

MI

N

6" 6"

PLACE GRANULAR ENCASEMENT

MATERIAL (MECHANICALLY

COMPACT TO 6" ABOVE PIPE

IN 6" LIFTS)

BACKFILL WITH TRENCH MATERIAL

(24" LIFTS)

6" PLACE GRANULAR BEDDING

MATERIAL

PLACE GRANULAR

FOUNDATION MATERIAL

FIL

L H

EI

GH

T (V

AR

IE

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PLACE GRANULAR HAUNCH

MATERIAL (MECHANICALLY

COMPACT)

HDPE FLAT BOTTOM TRENCH

NTS

NOTE:

1. GRANULAR BEDDING, GRANULAR ENCASEMENT, AND BACKFILL SHALL BE

INCIDENTAL TO CONSTRUCTION.

2. ALL PIPE WITH A FILL HEIGHT GREATER THAN 15-FEET SHALL BE FULLY ENCASED IN

ASTM CLASS I MATERIAL.

3. THE SHOE WIDTH SHALL BE THE SAME AS THE COMPACTING MECHANISMS WIDTH

OR THE PIPE MANUFACTURER'S SPECIFICATIONS, WHICHEVER IS GREATER.

PIPE IDUNDISTURBED SOIL

BACKFILL WITH TRENCH MATERIAL

(24" LIFTS)

SHOE SHOE

6" 6"

PLACE GRANULAR ENCASEMENT

MATERIAL (MECHANICALLY

COMPACT TO 6" ABOVE PIPE

IN 6" LIFTS)

PLACE GRANULAR BEDDING

MATERIAL

FIL

L H

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GH

T (V

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PLACE GRANULAR HAUNCH

MATERIAL (MECHANICALLY

COMPACT)

TYPICAL CONNECTION DETAILS

NTS

HDPE EXTERNAL COUPLER

HDPE BEND (VARIES)

CONCRETE COLLAR (TYP)

CONNECTION

CONNECTION

APPROVED WTGF BULKHEAD

BULKHEAD3

BULKHEAD

PE INTERNAL COUPLER

PE CAP

HDPE CAP

CONCRETE PLUG

CONCRETE AND GRANULAR

FOUNDATION MATERIAL (TYP)

APPROVED WTGF

GRANULAR FOUNDATION

MATERIAL (TYP)

TILE TAPE

KEY NOTES:

APPROVED WATERTIGHT GASKETED FITTING (WTGF) SHALL ONLY BE USED WHEN THE PIPE TO BE CONNECTED IS 1/2 (OR SMALLER) THE DIAMETER OF THE PIPE TO BE TAPPED. A MOLDED TEE SHALL BE USED IN ALL OTHER SITUATIONS. APPROVED WTGF SHALL NOT BE INSTALLED COMPLETELY VERTICAL

OR INTO THE BOTTOM HALF OF THE PIPE TO BE TAPPED.

CONNECTION OF HDPE TO CLAY, CONCRETE, OR PE TILE.

CONNECTION OF PE TO CLAY, CONCRETE, OR PE TILE.

CONNECTION OF PE OR HDPE TO PIPE TO BE TAPPED.

BULKHEAD OF EXISTING CLAY OR CONCRETE TILE.

BULKHEAD OF EXISTING PE TILE.

BULKHEAD OF EXISTING HDPE TILE.

CONCRETE BULKHEAD SHALL EXTEND INTO THE PIPE A MINIMUM LENGTH EQUIVALENT TO ONE

DIAMETER OF THE PIPE.

GASKET

TILE TAPE

GEOTEXTILE FABRIC

(TYPE IV)

GEOTEXTILE FABRIC

(TYPE IV)

GEOTEXTILE FABRIC

(TYPE IV)

GEOTEXTILE FABRIC

(TYPE IV)

GEOTEXTILE FABRIC

(TYPE IV)

NOTES:

1. ALL TILE, FITTINGS, GEOTEXTILE FABRIC, FOUNDATION ROCK, TILE TAPE, CONCRETE, AND EXCAVATION

SHALL BE INCIDENTAL TO RESPECTIVE BID ITEM UNLESS OTHERWISE NOTED.

2. NOT ALL SITUATIONS OR APPROVED EQUALS ARE DEMONSTRATED IN DETAIL. ENGINEER SHALL APPROVE

OF EQUALS.

CONNECT TO EXISTING TILE

NTS

PIPE OD

FIL

L H

EI

GH

T (V

AR

IE

S)

SURROUND FITTINGS WITH GRANULAR

FOUNDATION (INCIDENTAL)

CONNECT TO

PROPOSED TILE

INSTALL TILE

(LENGTH VARIES)

BACKFILL WITH TRENCH MATERIAL

COMPACT IN 24" LIFTS

CONNECT TO EXISTING TILE

NOTES:

REFER TO THE TABLE FOR MATERIAL. SIZE VARIES. THE TILE SHALL BE THE SAME AS OR THE NEXT

AVAILABLE SIZE, UNLESS OTHERWISE SPECIFIED OR APPROVED BY THE ENGINEER.

HDPE SHALL BE USED IF THE EXISTING TILE IS HDPE, REGARDLESS OF THE FILL HEIGHT.

HDPE SHALL BE USED WITHIN 5' FROM THE PROPOSED PIPE AND THEN PE MAY BE USED.

REFER TO TYPICAL CONNECTION DETAILS.

CONNECTION TO PROPOSED TILE SHALL BE LIMITED TO 15 TO 75 DEGREES FROM SPRING LINE.

ALL TILE, FITTINGS, GEOTEXTILE FABRIC, FOUNDATION ROCK, TILE TAPE, CONCRETE, AND EXCAVATION

SHALL BE INCIDENTAL.

BULKHEAD EXISTING

TILE

EXISTING TILE TYPE FILL HEIGHT CONNECTION

MATERIAL

EXISTING PUBLIC TILES ALL HDPE

EXISTING PRIVATE TILES >15 FEET HDPE

EXISTING PRIVATE TILES ≤15 FEET

30398-C0-DETAILS

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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---- ---- C0-22

C0-22 DETAILS

23-30398

C0-22

DETAILS

SDP/JJJ

OBO

NUTRIENT

REDUCTION WQI

WETLAND

12'

12'

APPROX. 3' (SEE BERM & PROFILE GRADING)

OVERBUILD BERM ELEVATION: 1090.50'

SETTLED BERM ELEVATION: 1090.00'

4:1

4:1

1:1 MIN, TYP.

POOL ELEVATION:

1086.00

EXTEND 5' PAST TOE

EXISTING GROUND (TYP)

EXTEND 5' PAST TOE

TOE DRAIN DETAIL

18" MIN.

" M

IN

3"

FL ELEV

NTS

CO

MP

AC

TE

D

EA

RT

H

BA

CK

FIL

L

6' FROM DOWNSTREAM TOE

DOWNSTREAM

TOE OF DIKE

POROUS BACKFILL

±3'

4" PERFORATED (OR OTHERWISE

INDICATED ON PLANS) CORRUGATED

POLYETHYLENE DRAINAGE TUBING

2% TYP.

EARTHFILL, GENERAL DAM

METHOD 2 COMPACTION

TYPICAL EMBANKMENT SECTION

TILE OUTLET

NTS

1'

4' (± 2')

CMP

1% MINIMUMHDPE DRAIN TILE

2' MAX

EX. GROUND (TYP)

PLACE CMP OVER TILE A MINIMUM OF 6".

ENCASE JOINT IN 4" x 12" CONCRETE COLLAR.

THIS IS INCIDENTAL TO CMP PIPE WORK

ALTERNATIVELY, CONNECT TILE TO CMP WITH

DISSIMILAR PIPE COUPLER (MARMAC OR

APPROVED EQUIVALENT) NORMAL POOL ELEVATION: 1086'

NEW CMP DIAMETER

SHALL BE SMALLEST STANDARD SIZE THAT WILL FIT OVER

TILE; MINIMUM DIAMETER OF 12"

6" MIN INSTALL ANIMAL GUARD TO

OUTLETS 18" AND SMALLER.

INCIDENTAL TO TILE EXTENSION.

20' CMP

0.66' TOPSOIL SURFACING

STRIP 1' TOPSOIL WITHIN

ENTIRE PROJECT AREA SCARIFY AND COMPACT CUT SURFACES

CORE TRENCH: REFER TO IA CS-023 FOR EARTHFILL REQUIREMENTS

1.5 ' R

IPR

AP

30398-C0-DETAILS

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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---- ---- C0-23

C0-23 DETAILS

23-30398

C0-23

SDP/JJJ

OBO

NUTRIENT

REDUCTION WQI

WETLAND

PLAN VIEW

GRADE STABILIZATION

NTS

EXISTING GROUND

SHEET PILE WIER

1.5' RIPRAP

BERM TOP

VARIES

SECTION A-A

PROFILE VIEW

PLAN VIEW

STILLING BASIN RIPRAP

EXISTING GROUND

3:1 MAX.

2' MIN.

1.5

' RIPRAP

3:1 MAX.

3:1

MAX.

2'

2' 2'

1.5

' RIPRAP

EXISTING GROUND

3:1 MAX.

3:1 MAX.

2'2'

2'

DISTANCE VARIES

DI

ST

AN

CE

V

AR

IE

S

TOETOP

6" F

ILT

ER STO

NE

6" F

ILT

ER STONE

AA 3:1

M

AX

B B

SECTION B-B

PROFILE VIEW

NTS

SECTION A-A

PROFILE VIEW

NTS

2' 2'

CLASS E RIPRAP

1.5" FILTER STONE

6"

FI

LT

ER

S

TO

NE

6" GRAVEL

6" G

RA

VE

L

GRAVEL

2.5:1 MAX

2.5 :1

MA

X

EXISTING GROUND

EXISTING GROUND

EXISTING GRAVEL LINE EXISTING FIELD LINE

TIE INTO EXISTING

ROAD ELEVATION TIE INTO EXISTING

FIELD ELEVATION

1081.41

1079.951079.89

1084.79

1084.83 1082.45 1081.011081.23

5'

COMPACTED FILL MATERIAL

A A

BB

SECTION A-A

PROFILE VIEW

NTS

SECTION B-B

PROFILE VIEW

NTS

PLAN VIEW

DRIVEWAY

NTS

PLACE 12" CMP CULVERT AT DITCH LOW POINT

NWL: 1086.0'

RIPRAP ELEV.: 1085.8'

ELEV.: 1078.5'

3:1 SIDESLOPE

ELEV. VARIES

6' PROPOSED GROUND

BOTTOM OF SHEET PILE

1.5" FILTER STONE

2:1

3:1

2:1

3:1

3:1

-2.0%

12'

SHEET PILE WEIR

PLACE CLASS E RIPRAP WITH GROUT THROUGHOUT STILLING

BASIN OUT TO GRADING EXTENTS

A

A

6'

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)

SEE NOTE 4 SEE NOTE 4PIPE I.D.

CARRIER PIPE

2'

MI

N 2'

30398-C0-DETAILS

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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H

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SHEET NOT VALID UNLESS THIS TEXT IS COLOR.

---- ---- C0-24

C0-24 DETAILS

23-30398

C0-24

SDP/JJJ

OBO

NUTRIENT

REDUCTION WQI

WETLAND

IDALS

CORRECTED ELEVATIONS FOR DRIVEWAY8-14-2026 JAC

1. STRUCTURE SHOP DRAWINGS ARE REQUIRED FOR ENGINEER'S REVIEW AND

APPROVAL BEFORE FABRICATION OF WATER CONTROL STRUCTURE.

2. STRUCTURE IS TO BE CONSTRUCTED OF ALUMINIZED CORRUGATED METAL

PIPE.

3. STOP LOG CHANNEL IS TO BE ANCHORED TO THE WALLS AND FLOOR PRIOR

TO PLACING CONCRETE INVERT.

4. 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.

5. PLACE/POUR BASE OF STRUCTURE ON FIRM UNDISTURBED EARTH

FOUNDATION APPROVED BY ENGINEER.

6. A-LOK (OR EQUIVALENT) WATERTIGHT SEALS ARE REQUIRED FOR PIPE

CONNECTIONS TO THE WATER CONTROL STRUCTURE.

7. MANHOLE STEPS ARE TO BE INSTALLED FOR MAINTENANCE ACCESS TO THE

STOP LOGS.

8. 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.

9. ALL CMP FOR CONTROL STRUCTURE, RISER, AND ASSOCIATED PIPE SHALL BE

14 GA MINIMUM.

WATER CONTROL STRUCTURE NOTES:

48"

8" 9.5

4"

FLOW

WATER CONTROL STRUCTURE ELEVATION

12" Ø CMP

FL ELEV. 1079.34

FL ELEV. 1079.17

ELEV. 1078.84

6"

TOP STOP LOG CHANNEL

ELEV. 1088.34

TOP STOP LOG

(NWL)

ELEV. 1086.00

TOP OF EARTH ACCESS

BERM: 1090.00'

COVER AND STOP LOG STORAGE DETAILS

30" END CAP WITH 2-6"

GALVANIZED HANDLES

BOLTED TO TOP

RIM OF STRUCTURE TO BE

12" ABOVE GROUND.

MOUND SOIL TO SHED

WATER

6 LF 30" DIA. DUAL WALL HDPE BURIED

FOR STOP LOG STORAGE TUBE

PLACE 6" COMPACTED ROCK

TO SUPPORT TUBE AND PROVIDE DRAINAGE.

NTS

1. PROVIDE COMPATIBLE GRATE WITH LOCKING MECHANISM AND LIFTING

HANDLE (AGRIDRAIN GR24P OR APPROVED EQUIVALENT).

2. BOTH PADLOCKS FOR ACCESS DOOR AND STOPLOG STORAGE TUBE SHALL

BE KEYED ALIKE. FOUR KEYS ARE TO BE SUPPLIED UPON PROJECT

COMPLETION.

3. STOP LOG STORAGE IS TO BE PLACED CENTERED ON THE TOP OF BERM

OFFSET SO AN NOT TO INTERFERE WITH ANTI-SEEP COLLARS OR WATER

CONTROL STRUCTURE PIPING.

4. STOP LOGS NOT USED ARE TO BE PLACED IN THE STOP LOG STORAGE.

COVER/STOP LOG STORAGE NOTES:

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.

PROVIDE SLOTS FOR REMOVAL TOOL

- TWO PER STOP LOG…