26-01-74-01 - Plans.pdf

Jeffrey R. Felts Date License Number: 18644 My license renewal date is December 31, 2027 Pages or sheets covered by this seal:

All

This project includes installing an intake structure and 1400 ft of 12" dual wall field tile through private property easements.

Iowa DNR

Morgan Nordyke

515-250-3711 morgan.nordyke@dnr.iowa.gov

6200 Park Ave. Ste 200

Des Moines, IA 50321

Iowa Department of Natural Resources Construction Documents for

Perkins Marsh Palo Alto County, Iowa

Outlet Construction Project No. 26-01-74-01

Project Location Map

N

Sheet Index

Cover Sheet Project Overview Quantities & General Information Tile Plan & Profile Channel Plan & Profile Details

Iowa DNR

Jeff Felts

515-250-3712 jeff.felts@dnr.iowa.gov

951 Starview Dr.

Hinton, IA 51024

I hereby certify that this engineering document 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.

Directory Project Manager

Organization

Contact

Phone

Email

Address

City, State, Zip

District Engineer Organization

Contact

Phone

Email

Address

City, State, Zip

Project Description

Project Number:

26-01-74-01

Bid Date:

9/10/2026

Iowa Department of Natural Resources Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date Cover Sheet

Project Area

AutoCAD SHX Text Jeffrey R. Felts 18644

AutoCAD SHX Text A

AutoCAD SHX Text N

AutoCAD SHX Text I

AutoCAD SHX Text O

AutoCAD SHX Text W

AutoCAD SHX Text I

AutoCAD SHX Text S

AutoCAD SHX Text S

AutoCAD SHX Text E

AutoCAD SHX Text F

AutoCAD SHX Text O

AutoCAD SHX Text R

AutoCAD SHX Text P

AutoCAD SHX Text D

AutoCAD SHX Text E

AutoCAD SHX Text S

AutoCAD SHX Text N

AutoCAD SHX Text E

AutoCAD SHX Text C

AutoCAD SHX Text I

AutoCAD SHX Text L

AutoCAD SHX Text O

AutoCAD SHX Text R

AutoCAD SHX Text E

AutoCAD SHX Text E

AutoCAD SHX Text N

AutoCAD SHX Text I

AutoCAD SHX Text G

AutoCAD SHX Text N

AutoCAD SHX Text E

AutoCAD SHX Text L

AutoCAD SHX Text A

0' 2500' 5000'

N

Project Number:

26-01-74-01

Bid Date:

9/10/2026

Iowa Department of Natural Resources Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date 2Project Overview

Perkins Marsh

Tile Installation Easement (Christensen & Sampson)

Graettinger

320th St

420th Ave/Highw ay 4

Des M oines River

0' ###' ###'

N

320th St

Access site from 320th St on West side of tree line.

Minimize ground disturbance outside of the construction access path.

Project Location (Proposed Intake)

Construction Access

Estimate Reference Information 1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Mobilization - Payment per SUDAS Section 11020.

12" Dual Wall Tile (Non-Perforated) - Must meet SUDAS Section 4020 2.01F for HDPE pipe. Strip and stockpile black dirt to be respread after tile installation and backfill.

Granular Bedding & Backfill - Product to meet SUDAS Section 3010 for Class 1 material. Backfill around tile per SUDAS 3010.103 shown on sheet 6.

Private Tile Repairs/Reconnects - Repair and reconnect any private pattern tile disturbed during the installation of the 12" dual wall tile.

15" CMP - Must meet SUDAS Section 4020 2.01 G for 16 gauge corrugated metal pipe. Install with 2' of CMP slid over the HDPE pipe and wrap exterior joint with two layers of engineering fabric.

Pre-Cast Intake Structure (Install Only) - DNR furnished item. See Sheet 6 for reference photos. Place on 12" of Class 1 bedding material.

Class 10 Excavation(Channel) - Per SUDAS Section 2010. Spread excavation spoils north of the channel with a max spoil depth of 1 ft.

See approximate spoils location on Sheet 5. Grade spoils to maintain surface drainage.

Tile Search - Expose existing tile line in a minimum of two locations to determine alignment and ensure it is not damaged during the installation of the 12" dual wall tile.

12" HD Bar Guard - Agri Drain Heavy Duty Bar Guard or approved equal.

15" Rat Guard - Agri Drain Rodent Guard or approved equal.

Project Number:

26-01-74-01

Bid Date:

9/10/2026

Iowa Department of Natural Resources Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date Quantities & General Information

General Information

1. Verify actual locations and elevations with DNR Engineer.

2. All work shall conform to and be performed in accordance with the current edition of the Iowa SUDAS Specifications Manual and all applicable codes and ordinances.

3. The contractor shall visit the site and inspect the project area and thoroughly familiarize themselves with the actual job conditions prior to bidding and the start of work. Failure to visit the project site shall not relieve the contractor from performing the work in accordance to the plans, specification, special provisions and contract.

4. The contractor shall verify, at the site, all dimensions and conditions shown on the plans and shall notify the DNR Engineer of any discrepancies, omissions, and/or conflicts prior to proceeding with the work.

5. It shall be the contractor’s responsibility to provide waste areas or disposal sites for excess material (excavated material or broken concrete) which is not desirable to be incorporated into the work involved on this project. No payment for overhaul will be allowed for material hauled to these sites.

No material shall be placed within the right-of-way, unless specifically stated in the plans or approved by the DNR Engineer.

6. The contractor shall not disturb desirable grass areas and desirable trees outside the construction limits. The contractor will not be permitted to park or service vehicles and equipment or use these areas for storage of materials. Storage, parking and service areas will be subject to the approval of the DNR Engineer.

7. Where utilities and fixtures are shown as Existing on the plans or encountered within the construction area, it shall be the responsibility of the contractor to notify the DNR Engineer of those utilities prior to the beginning of any construction. The contractor shall be afforded access to these facilities for necessary modification of services. Underground facilities, structures and utilities have been plotted from available surveys and records and therefore their locations must be considered approximate only. It is possible there may be others, the existence of which is presently not known or shown. It is the contractor’s responsibility to determine their existence and exact location and to avoid damage thereto. No claims for additional compensation will be allowed to the contractor for any interference or delay caused by such work.

8. The contractor shall shape graded area to maintain surface drainage. All elevations are to finish grade.

9. The contractor is expected to have materials, equipment, and labor available on a daily basis to install and maintain erosion control features on the project. This may involve seeding, silt fence, rock ditch checks, silt basins or silt dikes.

-0+50 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

12641265

-0+50

.2

0+00

.9

.5

1+00

.9

.0

2+00

.1

.5

3+00

.9

.0

4+00

.3

.6

5+00

.9

.1

6+00

.9

.6

7+00

.0

.1

8+00

.9

.7

9+00

.9

.2

10+00

.9

.7

11+00

.4

.3

12+00

.9

.8

13+00

.3

.3

14+00

.0

.8

15+00

.9

.0

0.53%

GR

AD

E

BR

EA

K

ST

A

0+

.0

EL

EV

2.

GR

AD

E

BR

EA

K

ST

A

+2 2.

EL

EV

0.

0' 50' 100'

N

Project Number:

26-01-74-01

Bid Date:

9/10/2026

Iowa Department of Natural Resources Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date Tile Plan & Profile

DNR Property Line

Intake Structure See Sheet 6 for details

Sta = 14+22.07

Existing Tile Line

Drainage Outlet

Existing Structure

Existing Ground Proposed tile line

150' construction easement boundary

Install 10 LF of 15" CMP with rat Guard at tile outlet

Install 1,410 LF of 12" Dual Wall HDPE Tile

15" CMP @ Outlet

Intake Structure

12+00 13+00 14+00 15+00

16+00

17+00 17+18

1261 1260

11+00

.3

12+00

.9

.8

13+00

.3

.3

14+00

.0

.8

15+00

.9

.0

16+00

.9

.0

17+00

.9

.0

18+00

0.00%

GR

AD

E

BR

EA

K

ST

A

+1 7.

EL

EV

0.

GR

AD

E

BR

EA

K

ST

A

+2 2.

EL

EV

0.

0' 25' 50'

N

Project Number:

26-01-74-01

Bid Date:

9/10/2026

Iowa Department of Natural Resources Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date Channel Plan & Profile

DNR Property Boundary

Existing Tile and Intake

Proposed Intake See Sheet 6 for details

Sta 14+22.07

Existing Ground

Proposed bottom of open channel

Intake Structure

Spread excavation spoils North of proposed channel

Channel daylights at Elevation: 1260.0

Proposed 12" HDPE Tile

Project Number:

26-01-74-01 Bid Date:

9/10/2026 Iowa Department of Natural Resources

Engineering Section - 6200 Park Ave., Suite 200 Des Moines, IA 50321-1270

Outlet Construction Perkins Marsh, Palo Alto County

Sheet No:Drawn by: MN

M

Sh ar ed d riv es

\D N

R

LW

B

EN

G Pr oj ec ts \7

4_ Pa lo A lto \2

6-

-7 4-

P er ki ns M ar sh ti le o ut le t\

5_ De sig n\

Pe rk in s M ar sh

.d w g 8/

/2

7:

A M

Pl ot

D at e:

Revision Date Details

For tile depth shallower than 4', no bedding material necessary.

For tile depths of 4'–7', install tile per Class F-1 OR use a concave saddle excavation in the undisturbed trench invert. If a saddle excavation is used, it shall be precisely contoured to match the outside radius of the pipe. The shaped saddle shall provide continuous, uniform support over a minimum 90° arc along the entire pipe run to prevent point loading and lateral shifting.

For tile depths 7' - 10', bury tile per Class F-2.

For tile depths greater than 10', bury tile per Class F-3.

Iowa DOT SW103, SUDAS Figure 3010.103

Intake Structure - Front View Intake Structure - Side View Intake Structure - Back View