07/2017 cmc 1 DNR Form 542-1427
OPEN FEEDLOT
1
OR COMBINED
2
OPERATION
Construction Permit Application Form
INSTRUCTIONS:
Prior to construction, complete Section 1 to determine if a construction permit is required. If a construction permit is required,
complete the rest of the form. Then, sign it and mail it as instructed in the submittal checklist No. 1 (pages 3 to 7). See page 7 for
information regarding additional permits that may be required to your open feedlot.
SECTION 1 - Is a construction permit required?
If any of the following criteria are met, a construction permit is required prior to constructing, expanding or modifying the manure
control system at an open feedlot or a combined operation or prior to repopulating an open feedlot operation. Check all boxes that
apply:
Criteria
A)
An open feedlot or a combined operation required to be issued a National Pollutant Discharge Elimination System (NPDES)
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permit. This includes (check one box):
A large CAFO
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, as defined in 567 Iowa Administrative Code (IAC) 65.100(455b, 459A). You must combine same type
of animals in confinement
5
operation buildings and open feedlot pens that are under common ownership or
management. See page 8 for CAFO definitions.
A medium CAFO
4
, as defined in 567 IAC 65.100(455B,459,459A). You must combine same type of animals in
confinement
5
operation buildings and open feedlot pens that are under common ownership or management. See
page 8 for CAFO definitions.
A designated CAFO
4
, as defined in 567 IAC 65.100(455B,459, 459A). See page 8 for CAFO definitions.
And any of following is planned (check one box):
Construction or expansion of a settled open feedlot effluent basin.
Construction or expansion of an Alternative Technology (AT) system
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.
Installation of a settled open feedlot effluent transfer piping system.
B)
The animal unit capacity (AUC)
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of the open feedlot operation will be increased to more than the AUC
7
approved by the
department in a previous construction permit. To calculate the AUC
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, use Table 1 (page 2.)
C)
The volume of settled open feedlot effluent, settleable solids or open feedlot effluent stored at the open feedlot operation
will be increased to more than the volume approved by the department in a previous construction permit.
D)
Repopulation of an open feedlot operation if it was discontinued for 24 months or more and the AUC
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would be 1,000 AU
or more. To calculate the AUC
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, use Table 1 (page 2.)
SECTION 2 - General Information
A)
Name of operation:
Location:
(1/4 1/4)
(1/4)
(Section)
(Tier & Range)
(Name of Township)
(County)
B) Owner information:
Name:
Title:
Address:
Telephone:
Fax:
Email:
C) Person to contact with questions about this application (if different than owner):
Name:
Title:
Address:
Telephone
:
Fax:
Email:
1
Open Feedlot: Unroofed or partially roofed area where livestock or poultry are confined for more that 45 days out of any 12-month period.
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Combined: combined operation includes both of the other two definitions in items 1 & 5.
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NPDES permit as defined in rule 567 IAC 65.100(455B,459,459A). See page 7 for instructions on how to download the open feedlot operation rules.
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CAFO: Concentrated Animal Feeding Operation as defined in rule 567 IAC 65.100(455B,459,459A). You must combine same type of animals, in confinement buildings
and open feedlot pens that are under common ownership or management. To calculate the animal capacity of the operation or combined operation, use Table 1 (on
page 2.) If the combined animal capacity meets the large CAFO or medium CAFO definitions, your operation is a CAFO. A CAFO also includes a designated CAFO. See
page 7 for instructions on how to download the open feedlot operation rules and page 8 for a CAFO description.
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Confinement: Totally roofed area where livestock or poultry are confined for more than 45 days out of any 12-month period.
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AT systems require extensive monitoring and reporting which will be required conditions in any NPDES permit. An application for a permit does not guarantee that a
construction permit and NPDES permit will be granted or that any NPDES permit will be renewed.
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AUC: Animal Unit Capacity as defined in rule 567 IAC 65.100(455B, 459,459A). You must combine animals in confinement buildings and open feedlot pens that are
under common management or ownership. See page 7 for instructions on how to download the rules.) To calculate the AUC of the operation use Table 1 (on page 2.).
07/2017 cmc 2 DNR Form 542-1427
D) Adjacency criteria: do you own another open feedfeedlot operation, or do you manage another open feedlot operation that is
located within 1,250 feet of the open feedlot operation that is applying for a construction permit?
Yes. Include the animals from the adjacent feedlot(s) in Table 1 (below). No.
E) This construction permit application is for:
A new open feedlot operation
Expansion of an existing open feedlot operation
Modification of the manure control system at an existing open feedlot operation
Reopening an open feedlot operation that was discontinued for 24 months or more
An Alternative Technology (AT)
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manure control system at an open feedlot operation
An animal feeding operation that after combining the same type of animals in confinement buildings and open feedlot pens,
under common ownership or management, meets the definition of large CAFO
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, medium CAFO
4
or designated CAFO
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, that is
proposing to install manure and runoff controls
F) Animal capacity and AUC
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of the animal feeding operation:
If the operation has animals housed in confinement buildings and open feedlot pens that are under common ownership or
management, for each animal type enter the current and proposed number of head in columns [1] and [2]. Add the number of
head entered in columns [1] and [2], for each animal type. For each row, look at the Total No. of Head (combined operations)
and determine if it meets of exceeds the large CAFO
4
or medium CAFO
4
definitions.
If this is only an open feedlot operation, for each row enter the current and proposed number of head in column [2] and
determine if it meets or exceeds the large CAFO
4
or medium CAFO
4
definitions. If the open feedlot maintains more than one
animal type, add all animal units in open feedlots and determine if the Total AUC
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is 1,000 AU or more. Also, if you answered
“Yes” in SECTION 1, D) (adjacency), include the animals of the adjacent open feedlot operation(s).
If the Total number of head for each animal type at an open feedlot or at a combined CAFO
4
, meets or exceeds the large CAFO
4
or medium CAFO
4
definitions, or if the Total AUC
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at the open feedlot operation meets or exceeds 1,000 AU, your operation is a
CAFO
4
. See page 8 for CAFO
4
definitions.
Table 1: Animal Capacity and Animal Unit Capacity (AUC
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)
Animal Type
Confinements
Open Feedlots
Combined
Current
No. Head
Proposed
No. Head
[1]
Current
No. Head
Proposed
No. Head
[2]
x Factor
= AUC
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Total
No. Head
[1] + [2]
Cattle (other than veal calves or
mature dairy cows) which includes
beef cattle, steers, cow-calf pairs,
dairy heifers or immature dairy
1.0
Veal calves
1.0
Mature dairy cows (milked or dry)
1.4
Swine, 55 lbs. or more
0.4
Swine nursery, 15 to 55 lbs.
0.1
Sheep and goats, including lambs
0.1
Chicken broilers, 3 lbs. or more
0.01
Chicken broilers, less than 3 lbs.
0.0025
Chicken layers, 3 lbs. or more
0.01
Chicken layers, less than 3 lbs.
0.0025
Turkeys, 7lbs or more
0.018
Turkeys, less than 7 lbs.
0.0085
Horses
2.0
Total AUC
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:
My animal feeding operation is:
An open feedlot that is a large CAFO
4
An open feedlot that is a medium CAFO
4
A combined CAFO
4
that is also a large or medium CAFO
4
A designated CAFO
4
I hereby certify that the information contained in this application is complete and accurate.
Signature of owner(s)
Date:
CAVEAT: This form is only a summary of Iowa Code chapter 459A and the DNR’s amended administrative rules. It is a guidance document and should not be used as
replacement for the statutory provisions and administrative rules (collectively, the law). While every effort has been made to assure the accuracy of this information,
the law will prevail in the event of a conflict between this document and the law.
07/2017 cmc 3 DNR Form 542-1427
Applicant’s Submittal Checklist No. 1
Open Feedlots
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with Conventional Systems (567 IAC Chapter 65, Appendix A) or AT Systems
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Submit the information requested in this checklist and include this checklist with your application. Incomplete applications will be
immediately returned to applicant. If included with the construction permit application, the NPDES
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permit application form and
NPDES fee should be the first page of the application package.
Mail one package containing (4) copies, unless indicated otherwise, of Items 1 through 6, and if applicable Item 7, as instructed on
page 7 and in the following order:
Item 1 - NPDES
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permit application form and NPDES fees.
Applicant/
Consultant
Item
NPDES
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permit application and fees (Forms 542-4001 and 542-1250) are included. Include a check payable to Iowa DNR.
One (1) copy of the Nutrient management plan (NMP) if an NPDES
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permit is to be submitted.
One (1) copy of the copy of public notice for the nutrient management plan and anti deg analysis.
Item 2 - Construction permit application form DNR Form 542-1427, completed and signed by the owner (previous pages.)
Item 3 - Engineering report Must be stamped and signed (on original) by a licensed professional engineer (PE) in the state of
Iowa or by an engineer of the Natural Resources Conservation Service (NRCS). The report shall describe in detail the proposed
manure control system and the feedlot runoff control system (567 IAC Chapter 65, Appendix A, Systems 1 to 5) or AT System
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being proposed, including calculations that show the detailed system requirements:
Applicant/
Consultant
Item
Animal unit capacity (Table on previous page)
Number of acres and estimated volume of runoff from the unpaved feedlot area.
Number of acres and estimated volume of runoff from the paved feedlot area.
Number of acres and estimated volume of runoff from cropland, pasture and woodland draining into the runoff control
system; and the estimated runoff expected from the 25-yr, 24-hr storm event.
Number of square feet or acres (whatever best describes the facility) and estimated volume of runoff from total roofs,
farmstead and driveways draining into the runoff control system. If none, please enter “0.”
The volume of processed wastewater which drains into the runoff control system during a 12-month period. If none,
please enter “0.”
The volume of open feedlot effluent from other sources which discharge into the control system during a 12-month
period. Drainage areas must include areas for feed storage and bulk material storage. Drainage from these areas cannot
be diverted. If none, please enter “0.”
The volume required in the settled open feedlot effluent basin to store the feedlot runoff.
The volume provided in the settled open feedlot effluent basin.
Volume required in the AT System or solids settling facility to contain expected open feedlot effluent as required in 567
IAC 65.110(1).
Volume provided in the AT System or solids settling facility.
Initials
I have reviewed and submitted the information for engineering report (Engineer initial):
I have reviewed the engineering report that has been submitted to the DNR and it meets DNR requirements (DNR
representative initial):
07/2017 cmc 4 DNR Form 542-1427
Item 4 - Engineering plans. Must be stamped and signed (on original) by a licensed professional engineer (PE) in the state of Iowa or
by an engineer of the Natural Resources Conservation Service (NRCS). The plans must include the following:
Applicant/
Consultant
Item
A certification that the design of the settled open feedlot effluent basin and/or AT System
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complies with the
construction design standards of Division II of chapter 65, as required in 567 IAC 65.105(3)”b.”
Information (e.g. maps, drawings, aerial photos, etc.) that shows the location of your feedlot, including the name of the
feedlot and legal description (¼ ¼, ¼, Section, Tier and Range, Township name, County), as required in 567 IAC
65.107(2)”h.”
The location of any other open feedlot operation that you own or manage that is located within 1,250 feet of the open
feedlot operation that is applying for a construction permit; or that is adjacent, as defined in 567 IAC 65.107(2)”h”(2.)
A plan view that shows the location of the feedlot(s), proposed solids settling basin, settled open feedlot effluent basin
(effluent control structures) and AT System
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components:
Include dimensions and available storage volume.
Clean water diversions.
Identify separation distances to existing private and public wells to show that the separation distance
requirements of 567 IAC 65.108(1) and (2) are being met.
Cross sectional view(s) of the proposed settled open feedlot effluent basin:
Indicate settled open feedlot effluent basin dimensions at inside top of berm and include maximum liquid
level.
Indicate elevations at settled open feedlot effluent basin tops and bottoms, also the natural and final
grade elevations.
Indicate drainage directions and effluent system flowpath.
Basin inlet and outlet details (manure transfer pipe.)
Indicate the proposed liner thickness and the berm widths.
Indicate the side slope of the basin.
If a groundwater lowering system is required 567 IAC 65.109(3) “c”, include details and calculations.
All elevations referenced to an identified benchmark – County benches as established by NGVD29Datum
(USGS topographic map, MSL)
Recommended Details for Drawings:
Erosion control (riprap or equal) provided at basin inlets, outlets, spillways, and corners.
Overflow emergency spillway.
Maximum 3:1 berm slope (inner and outer.)
Initials
I have reviewed and submitted the information for engineering drawings (Engineer initial):
I have reviewed the engineering drawings that has been submitted to the DNR and it satisfies DNR needs (DNR
representative initial):
Item 5 - Soils and Hydrogeologic Report. The soils and hydrogeologic report shall address all of the following requirements:
Applicant/
Consultant
Item
The soils and hydrogeologic conditions, subsurface soil classification and the result of soils investigation at the proposed
construction site must be conducted as required in 567 IAC 65.109(2), “a” to “c”(1)-(7) and/or 567 IAC 65.110(4):
The report must be prepared by a qualified person ordinarily engaged in the practice of performing soil
investigations.
07/2017 cmc 5 DNR Form 542-1427
A detailed description of three continuous core samples – minimum of three per Cell (Settled Open Feedlot
Effluent Basin), must be included. All boring logs should provide soil profile characterization to identify both
depth to seasonal high ground water table and Loess/Till interface – to a minimum of 10 feet below the
proposed basin bottom.
Carbonated bedrock depth determination: If proposed basin is in karst according to DNR siting atlas the soils
investigation shall include a description of one 25 ft deep coring below bottom of proposed structure OR a well
log from within 100 feet of the proposed structure (well logs may be found at the GEOSAM website). If more
than 25 feet or more of unconsolidated(suitable) material exists then the site is not considered to be karst.
If site is in karst or drains to a known sinkhole then settled open feedlot effluent basins and all manure
storage structures must be formed, pursuant to 567 IAC 65.109(4).
Where bedrock is encountered, but site is not in karst, determine if the bedrock separation requirement in
567 IAC 65.109(5) is met.
Groundwater Hydrology, 567 IAC 65.109(3), 567 IAC 65.110(5):
Determine if the minimum groundwater separation required in 567 IAC 65.109(3)”b” is met.
Determine if an artificial groundwater lowering system as required in 567 IAC 65.109(3)”c” is needed.
Determination of groundwater table must be done as required in 567 IAC 65.109(3)”a” or 567 IAC 65.110(5). The
measured groundwater elevations rarely represent the seasonal groundwater table. Therefore, soils
characteristics and NRCS soils data must be considered.
Water table map should be constructed from the water table levels observed in the soil corings and monitoring
wells. This may also be included in the cross sectional view of the engineering plans.
Indicate in a cross sectional view, the estimated surface groundwater table. This may also be included in the
cross sectional view of the engineering plans.
Verify that all deep soil corings and temporary monitoring wells will be plugged following sampling.
If known, identify location of proposed long-term monitoring (as needed by the DNR determination) and based
upon the Geotechnical report submitted. This may also be included in the plan view or cross sectional view of the
engineering plans.
Verify soil suitability for construction of the compacted liner.
Initials
I have reviewed and submitted the information for soil & hydrogeological report (Engineer initial):
I have reviewed the soil & hydrogeological report that has been submitted to the DNR and it satisfies DNR requirements
(DNR representative initial):
Item 6 - Technical Specifications. Must be prepared by a licensed professional engineer (PE) in the state of Iowa or by an engineer
of the Natural Resources Conservation Service (NRCS), that address the following:
Applicant/
Consultant
Item
The technical specifications for the basin and/or AT System
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must describe in detail, all design, construction and
specifications for the basin to meet the design requirements of 567 IAC Chapter 65, Division II “Open Feedlot
Operations”:
Technical specifications for the basin and/or AT System
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to meet drainage tile removal standards of 567 IAC
65.109(1) and 567 IAC 65.110(3).
The technical specifications shall also describe the liner construction standards for the basin to meet the
requirements of 567 IAC 65.109(7), “a”(1)-(2) or “b”:
Provide minimum of one-foot thick compacted clay liner on interior berms and bottom of settled open
feedlot effluent basin(s).
Conduct tests to show that percolation of berm and bottom do not exceed 1/16 inch per day (1.8x10
-6
cm/s) at the design depth.
07/2017 cmc 6 DNR Form 542-1427
Summary of predictive computer modeling results for any proposed AT System
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as required by 567 IAC
65.110(6)”a” and 65.110(7)”a”.
Initials
I have reviewed and submitted the technical specifications (Engineer initial):
I have reviewed the technical specifications that has been submitted to the DNR and it satisfies DNR requirements (DNR
representative initial):
Item 7 - Well variance, if needed. In accordance to 567 IAC 65.108(3), the applicant may request a well variance if the proposed
open feedlot effluent structures do not comply with the well separation distance requirements of 567 IAC 65.108(1) and 65.108(2).
The well variance request shall be made in writing to the Director, at the time the construction permit application is submitted. Call
(712) 262- 4177 for well variance procedure.
A.
For each well that does not meet the required separation distance, the following items must be submitted:
1.
Well location:
Legal description of each well in 1/4 1/4, 1/4, Section, Tier, Range, and County.
Image of proposed site (in the form of a site plan or drawn on an aerial photo) with well locations and
distances marked to proposed new structures and other landmarks.
2.
Recent water analysis for nitrate-N from a certified laboratory.
B.
If gross contamination is indicated, submit as many of the following items as possible:
1.
Driller’s log submitted by a certified well driller. These logs may be from local drillers, the GEOSAM website, the
Private Well Tracking System, county sanitarians, or other county agencies.
2.
Total well depth.
3.
Screen materials, length, and depth.
4.
Casing diameter and depth.
5.
Static water level (SWL) and pumping water level (PWL) as plumbed/measured by a certified driller, pump
installer, professional engineer, or county sanitarian.
6.
Description of wellhead protection such as a concrete pad around the well, runoff control, berms, and buffers.
7.
Details of water use such as the livestock or human consumption and daily pumpage rates.
Note: Water withdrawal permits are required if the daily pumpage rate will exceed 25,000 gallons per day.
8.
Additional water quality characteristics from recent analyses.
Initials
I have reviewed and submitted the well variance information, if needed (Engineer initial):
I have reviewed the well variance information that has been submitted to the DNR and it satisfies DNR requirements
(DNR representative initial):
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07/2017 cmc 7 DNR Form 542-1427
Instructions on finding the open feedlot
1
operation rules – 567 IAC Chapter 65:
1. Go to www.iowadnr.gov and click on “Environmental Protection”, then select “Animal Feeding Operations”, then select “AFO
Rules and Regulations”.
2. Scroll until you find “Current Rules” and click on Chapter 65.
3. Scroll until you find the open feedlot operation rules which are in “DIVISION II” (Note that “DIVISION I” applies to confinement
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feeding operations.)
Information about other permits that may be required:
This section is for informational purposes only. The applicant is responsible for verifying any additional permit requirements, with
the corresponding DNR office, and for obtaining any other local, state or federal permits that may be required to the open feedlot
operation.
Open feedlot
1
operation structures exceeding storage capacity or dam height thresholds or located on a flood plain or within a
floodway of a river or stream may be required to obtain DNR flood plain development permits and provide protection from
inundation by flood waters, as specified in the Iowa Administrative Code, 567-Chapters 71 and 72. For more information contact
Kelly Stone of the Flood Plain Management Program at (515) 725-8312 or visit:
http://www.iowadnr.gov/insidednr/regulatoryland/floodplainmanagement/floodplaindevpermit.
A Storm water permit General permit No. 2, associated with construction activities is required, prior to disturbing any soil if the
total construction site area to be disturbed equals or exceeds one (1) acre of land. This includes the clearing, grading and
excavation of the animal feeding operation structures, even with phased construction. The permit must be obtained before
commencement of soil disturbing activities for the project. For more information contact the Storm Water Program at (515)
725-8415 or visit: http://www.iowadnr.gov/insidednr/regulatorywater/stormwater.
A water use permit is required for the withdrawal or diversion of more than 25,000 gallons per day of water. Water purchased
from municipal or rural water systems is excluded. For additional information, contact the Water Supply Section at (515) 725-
0336 or visit: http://www.iowadnr.gov/insidednr/regulatorywater/watersupplyengineering/waterallocationuse.
Questions:
Questions about open feedlot
1
construction permit requirements or regarding this form should be directed to an engineer of the
animal feeding operations (AFO) Program at (712) 262-4177 or go to http://www.iowadnr.gov (select link to “Environment”,
“Land Stewardship”, “Animal Feeding Operations” and “Open Feedlots”.)
To contact the appropriate DNR Field Office, go to
http://www.iowadnr.gov/insidednr/dnrstaffandoffices/environmentalfieldoffices.
Mailing Instructions:
If you opt to have the pre-design meeting with DNR to ensure the “Fast track” permitting process (see Open Feedlot Construction
Permit Manual), mail the construction permit application and requested documents in Checklist No. 1, as instructed in the pre-
design meeting with DNR.
If you choose not to have the pre-design meeting, at least 90 days before the date that construction, installation or modification is
scheduled to start, mail 4 copies of the construction permit application documents, Items 1 through 6, and if applicable Item 7 to the
following address:
Iowa Department of Natural Resources
Environmental Services Division
Field Office 3, Gateway North
1900 N Grand Ave Ste E17
Spencer IA 51301
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07/2017 cmc 8 DNR Form 542-1427
CAFO DEFINITIONS
“Large concentrated animal feeding operation” or “large CAFO.” An AFO is defined as a large CAFO if it stables or confines as many as or more
than the numbers of animals specified in any of the categories shown below. An AFO is also defined as a large CAFO, if after combining animals in
confinement structures and open feedlot pens, it meets or exceeds any of the following:
1. 700 mature dairy cows, whether milked or dry;
2. 1,000 cattle, including but not limited to heifers, steers, bulls, veal calves and cow/calf pairs;
3. 2,500 swine each weighing 55 pounds or more;
4. 10,000 swine each weighing less than 55 pounds;
5. 500 horses;
6. 10,000 sheep or lambs;
7. 55,000 turkeys;
8. 30,000 laying hens or broilers, if the AFO uses a liquid manure handling system;
9. 125,000 chickens (other than laying hens), if the AFO uses other than a liquid manure handling system;
10. 82,000 laying hens, if the AFO uses other than a liquid manure handling system;
11. 1,000 animal units, where more than one category of animals is maintained using the same type of operation.
“Medium concentrated animal feeding operation” or “medium CAFO.” The term medium CAFO includes any AFO with the type and number of
animals that fall within any of the ranges listed in paragraph “a” of this definition and which has been defined or designated as a CAFO. An AFO is
defined as a medium CAFO if:
a. The type and number of animals that it stables or confines fall within any of the ranges shown below. You must combine animals in confinement
structures and open feedlot pens:
(1) 200 to 699 mature dairy cows, whether milked or dry;
(2) 300 to 999 cattle, including but not limited to heifers, steers, bulls, veal calves and cow/calf pairs;
(3) 750 to 2,499 swine each weighing 55 pounds or more;
(4) 3,000 to 9,999 swine each weighing less than 55 pounds;
(5) 150 to 499 horses;
(6) 3,000 to 9,999 sheep or lambs;
(7) 16,500 to 54,999 turkeys;
(8) 9,000 to 29,999 laying hens or broilers, if the AFO uses a liquid manure handling system;
(9) 37,500 to 124,999 chickens (other than laying hens), if the AFO uses other than a liquid manure handling system;
(10) 25,000 to 81,999 laying hens, if the AFO uses other than a liquid manure handling system;
(11) 300 to 999 animal units, where more than one category of animals is maintained using the same type of operation; and
b. Either one of the following conditions is met:
(1) Manure or process wastewater is discharged into waters of the United States through a manmade ditch, flushing system, or other similar
man-made device; or
(2) Manure or process wastewater is discharged directly into waters of the United States which originate outside of and pass over, across or
through the facility or otherwise come into direct contact with animals confined in the operation.
“Designated CAFO” means an AFO that has been designated as a CAFO pursuant to rule 65.103(455B,459A).
65.103(1) The department may evaluate any animal feeding operation that is not defined as a large or medium CAFO, and designate it as a CAFO if,
after an on-site inspection, it is determined to be a significant contributor of manure or process wastewater to waters of the United States. In
making this determination, the department shall consider the following factors:
a. The size of the operation and the amount of manure or process wastewater reaching waters of the United States;
b. The location of the operation relative to waters of the United States;
c. The means of conveyance of manure or process wastewater to waters of the United States;
d. The slope, vegetation, rainfall, and other factors affecting the likelihood or frequency of discharge of manure or process wastewater into
waters of the United States; and
e. Other relevant factors.
65.103(2) No animal feeding operation with an animal capacity less than that specified for a medium CAFO shall be designated as a CAFO unless
manure or process wastewater from the operation is discharged into a water of the United States:
a. Through a man-made ditch, flushing system, or other similar man-made device; or
b. Which originates outside of and passes over, across or through the facility or otherwise comes into direct contact with animals confined in the
operation.
65.103(3) The owner or operator of a designated CAFO shall apply for an NPDES permit no later than 90 days after receiving written notice of the
designation.
The DNR’s mission:
To conserve and enhance our natural resources in cooperation with individuals and organizations to improve the quality of life for Iowans and
ensure a legacy for future generations.
