The Illinois IEPA NPDES Industrial Stormwater Permit, known as the ILR00 General Permit, is the state-issued authorization that lets industrial facilities discharge stormwater into Illinois waters under the federal Clean Water Act Section 402. The Illinois Environmental Protection Agency (IEPA) issues this permit, and any facility in one of the 29 regulated industrial sectors must file a Notice of Intent (NOI) before stormwater leaves the site. The permit was reissued effective April 1, 2021, and remains active for a five-year term, with the current ILR00 permit document posted on the IEPA Bureau of Water page.
According to IEPA’s annual NPDES report, more than 4,200 Illinois facilities hold ILR00 coverage, and roughly 18% of new NOIs are kicked back for missing SIC codes, wrong receiving waters, or unsigned certifications. Filing wrong can mean civil penalties up to $66,712 per day per violation under the 2025 EPA penalty inflation rule.
Here is what you will learn in this guide:
- 📋 How to complete every line of the ILR00 NOI, SWPPP, Annual Inspection, and Notice of Termination
- 💡 Three real-world filing walkthroughs for a scrap yard, plastics plant, and trucking terminal
- ⚖️ Which Illinois statutes and federal rules govern each field and what triggers enforcement
- 🛠️ The eight documents you must gather before opening the form
- ❓ Field-by-field FAQs that answer the questions IEPA reviewers see most often
What the Permit Is and Who Must File It
The ILR00 General NPDES Permit authorizes the discharge of stormwater associated with industrial activity from facilities in 11 categories listed under 40 CFR 122.26(b)(14). The permit is the Illinois equivalent of EPA’s federal Multi-Sector General Permit (MSGP), but Illinois operates its own delegated NPDES program under 415 ILCS 5/12. Coverage is required before any stormwater leaves the site, and operating without it is a Class A misdemeanor under Illinois law.
You must file if your facility falls into one of the regulated SIC code groups, including manufacturing (SIC 20–39), mining (10–14), hazardous waste treatment, landfills, recycling (SIC 5015 and 5093), steam electric power, transportation with vehicle maintenance (SIC 40–45), treatment works over 1 MGD, construction support, and certain warehousing operations. The IEPA Sector List inside Appendix D of the permit shows the exact 29 sectors. A facility that has “no exposure” of industrial materials to rain may file a No Exposure Certification (NEC) instead, but only if every material and activity is fully enclosed.
The agency that receives the form is the IEPA Bureau of Water, Permit Section, in Springfield. The statute that drives the permit is the federal Clean Water Act § 402(p), implemented in Illinois by 35 Ill. Adm. Code Part 309 and Part 502. The deadline is at least 30 days before stormwater discharge begins, and the penalty for non-compliance reaches $66,712 per day per violation, plus criminal exposure under 415 ILCS 5/44.
Before You Start: Documents and Information You Need
Open the official ILR00 NOI form only after you have gathered every item below. Missing any single piece will stall your NOI in the IEPA queue, and the agency will not start the 30-day clock until the package is complete.
- Federal Tax ID (FEIN) and Illinois Business Number. IEPA cross-checks these against the Illinois Secretary of State’s Corporate File Detail database to verify the operator is in good standing. A mismatch means the NOI is held until the entity is reinstated.
- Primary SIC code and any secondary codes. The SIC code drives which sector-specific monitoring rules apply. Look it up on the OSHA SIC Manual. Wrong SIC codes are the #1 cause of NOI rejection.
- Latitude and longitude of the discharge point to four decimal places, taken from a GPS unit or USGS National Map. Estimates from Google Maps are accepted only if they hit four decimals.
- Name of the receiving water and its segment ID from the Illinois Integrated Water Quality Report. If the segment is on the 303(d) impaired waters list, additional monitoring kicks in.
- Site map showing drainage areas, outfalls, material storage, and impervious surfaces. The map becomes part of the SWPPP, not the NOI, but it must exist on day one.
- Stormwater Pollution Prevention Plan (SWPPP). The SWPPP is kept onsite under Part IV of the ILR00 permit and never submitted to IEPA, but it must be complete before the NOI signature.
- Endangered species screening using the USFWS IPaC tool, because Appendix E of the permit requires confirmation that listed species are not affected.
- Historic properties screening under the National Historic Preservation Act § 106, checked through the Illinois SHPO database.
- $500 annual permit fee per 415 ILCS 5/12.5, payable by check or through the IEPA ePay portal.
- Signature authority under 40 CFR 122.22. Only a corporate officer, general partner, sole proprietor, or duly authorized representative may sign.
Where to Get the Form and How to Access It
The official ILR00 NOI form lives on the IEPA Industrial Stormwater page inside the Bureau of Water section. The form carries a revision date of “Rev. 03/2021” in the lower-left corner; if your downloaded copy shows a different date, pull a fresh PDF before filing. IEPA does not accept legacy 2016 forms, and the agency returns them as incomplete.
You may also access the form through the IEPA Electronic NOI system, which routes the NOI through the federal NetDMR system for digital signature. The electronic system shaves about three weeks off the review window because IEPA flags errors in real time. Paper filers mail the form to Illinois EPA, Bureau of Water, Permit Section, 1021 North Grand Avenue East, P.O. Box 19276, Springfield, IL 62794-9276.
The form is free, but the $500 annual fee must accompany the NOI on first submission. Filers in Cook, DuPage, Lake, Kane, McHenry, and Will counties should also confirm whether their local stormwater ordinance, such as the MWRD Watershed Management Ordinance, adds local permitting on top of ILR00.
Step-by-Step: How to Fill Out the ILR00 NOI Line by Line
Section A.1 — Facility Operator Legal Name
This field asks for the legal name of the entity that controls day-to-day operations of the facility, exactly as it appears on the entity’s Illinois Secretary of State filing. Type the full legal name in capital letters, including suffixes like LLC, INC, or LP. Maria Lopez, owner of “Lopez Plastics LLC,” writes LOPEZ PLASTICS LLC.
If the facility is operated by a parent that is different from the property owner, the operator goes here, not the landlord. A common edge case appears when a property is leased: the tenant who controls operations files, even though the landlord owns the dirt. The most common mistake is entering a “doing business as” (d/b/a) name instead of the registered legal name; this triggers an IEPA letter requesting a corrected NOI and pauses coverage. A frequent misconception is that the operator is whoever holds the deed, when in reality the operator is whoever has operational control under federal NPDES rules.
Section A.2 — Operator Mailing Address
Enter the operator’s primary business mailing address, which is where IEPA will send permit letters, fee invoices, and inspection reports. Use a street address when possible, but a P.O. Box is allowed for the operator address. Lopez Plastics LLC enters 1450 W INDUSTRIAL DR, JOLIET, IL 60435.
The nuance here is that this address can differ from the facility address; a Chicago-headquartered company filing for a Peoria plant uses Chicago here. The most common mistake is using the plant address in this box, which causes IEPA notices to land in the wrong mailbox and missed compliance deadlines. A widespread misconception is that this address is also where inspectors show up, but inspectors travel to the facility address in Section B.1, not this one.
Section A.3 — Operator Contact Person, Phone, and Email
Provide the name, phone number, and email of a single point of contact who can answer questions about the NOI within 24 hours. Format the phone as (815) 555-0142 and use a monitored business email, not a personal Gmail address. The contact line reads “MARIA LOPEZ, (815) 555-0142, mlopez@lopezplastics.com.”
If the contact person leaves the company, you must file a permit modification within 30 days. The most common mistake here is listing a consultant who later disengages, leaving IEPA with a dead phone number. A frequent misconception is that this contact must be the same person who signs in Section H, but the signer must be a 40 CFR 122.22 official, while this contact can be any staff member.
Section B.1 — Facility Site Name and Physical Address
Enter the facility’s site name (not the corporate name) and the physical street address where industrial activity happens. Avoid P.O. Boxes here; the field requires a street, route, or rural address that GPS can locate. Lopez Plastics LLC enters site name “JOLIET RESIN PLANT,” address “1450 W INDUSTRIAL DR, JOLIET, WILL COUNTY, IL 60435.”
The edge case is a multi-parcel campus: list the address of the parcel where the principal industrial activity occurs and reference the others on the site map. The most common mistake is dropping the county, which IEPA uses to route the file to the correct regional inspector and which causes a routing delay if missing. A misconception is that the site name must match the operator name; in fact, the site name should describe the location so inspectors can find it.
Section B.2 — Facility Latitude and Longitude
Enter latitude and longitude in decimal degrees to four decimal places, measured at the centroid of industrial activity. Pull the coordinates from a handheld GPS or the USGS National Map so the precision matches IEPA expectations. The Joliet plant enters 41.5250, -88.0817.
The nuance: if the property is large, use the centroid of the impervious industrial area, not the front gate. The most common mistake is entering degrees-minutes-seconds instead of decimal degrees, which forces IEPA to convert and often produces a follow-up letter. A common misconception is that the precision can be two decimals because “the agency only needs the neighborhood,” but Appendix E endangered species screening requires four-decimal precision.
Section B.3 — Primary SIC Code and Sector
Enter the four-digit primary SIC code that describes the facility’s principal industrial activity, then write the matching ILR00 sector letter from Appendix D of the permit. The plastics plant enters SIC 3089 and Sector Y.
A facility with multiple activities lists the primary code first, then up to two secondary codes; each secondary code may bring its own sector monitoring under Part V of the permit. The most common mistake is using the NAICS code instead of SIC; ILR00 is SIC-based, and a NAICS entry forces a rewrite. A misconception is that “we only do a little of that activity, so we can skip it”; ILR00 requires every applicable sector to be listed.
Section B.4 — Receiving Water Body
Enter the name of the first surface water that receives stormwater from the site, including any unnamed tributary language used by IEPA. Pull the name from the Illinois Integrated Water Quality Report so spelling and segment ID match the agency’s records. The plant writes “HICKORY CREEK, SEGMENT IL_GLA-02.”
If discharge enters a municipal storm sewer (MS4) first, list the MS4 operator and the ultimate receiving water. The most common mistake is listing a county drainage ditch as a “creek,” because IEPA’s water quality models do not recognize unofficial names. A misconception is that discharging to an MS4 makes the operator exempt from ILR00, when in fact MS4 discharge still requires a permit.
Section B.5 — 303(d) Impaired Waters and TMDL Screening
Check whether the receiving water is on the Illinois 303(d) impaired waters list and whether a Total Maximum Daily Load (TMDL) has been issued. If yes, you must include the impairment cause and any TMDL pollutant in the SWPPP and conduct additional monitoring under Part VI of the permit. Hickory Creek is listed for fecal coliform, so the filer checks “Yes” and writes “fecal coliform.”
The edge case is a stream with a draft TMDL; IEPA treats draft TMDLs as binding once posted. The most common mistake is checking “No” without screening, which IEPA catches during desk review and which counts as a false certification under 40 CFR 122.22. A misconception is that small flows do not have to address TMDLs; the rule applies to any volume of discharge.
Section C — Endangered Species Eligibility
Run the USFWS IPaC screening for the facility coordinates and check the eligibility criterion (A through F) from Appendix E that supports your finding. Most filers qualify under Criterion A (no listed species in the action area) or Criterion C (informal consultation completed). The Joliet plant marks Criterion A and attaches the IPaC PDF.
The nuance: if IPaC returns the rusty patched bumble bee or a listed mussel, you must complete consultation before the NOI is accepted. The most common mistake is skipping the screening, which voids permit coverage retroactively. A misconception is that ESA does not apply because “the property is paved,” when in fact downstream impacts to listed aquatic species still count.
Section D — Historic Properties Eligibility
Check the box that describes how the facility complies with NHPA Section 106. Most existing facilities qualify under Criterion A because no earth-disturbing activity is planned, but new facilities must consult with the Illinois SHPO. The Joliet plant marks “Criterion A — no ground disturbance.”
The edge case is a redevelopment project that disturbs more than one acre, which triggers SHPO consultation in addition to ILR00. The most common mistake is treating this box as boilerplate; an unchecked box voids coverage. A misconception is that Section 106 applies only to listed properties, when in fact it applies to any property eligible for listing.
Section E — SWPPP Certification
Check the box certifying that the SWPPP has been prepared and is available onsite, and enter the date the SWPPP was completed. The SWPPP itself is not submitted with the NOI but must exist before signature. Maria certifies “SWPPP completed 02/15/2026.”
The nuance is that the SWPPP must be updated within 14 days of any change in operations or after every quarterly inspection. The most common mistake is back-dating the SWPPP completion to match the NOI date when the plan does not actually exist; this is a federal false-statement violation under 18 U.S.C. § 1001. A misconception is that a template SWPPP is enough; ILR00 requires site-specific best management practices.
Section F — Existing Permits
List any existing NPDES, air, RCRA, or local permits the facility already holds, with permit numbers and issuance dates. The plant lists “IEPA Air Permit 95030075, issued 06/12/2018.”
The most common mistake is leaving this blank, which suggests the facility is operating illegally and triggers a multi-program audit. A misconception is that expired permits do not count; expired but pending renewals must be listed.
Section G — No Exposure Certification
Skip this section unless the facility qualifies for the conditional no-exposure exclusion under 40 CFR 122.26(g). If you do qualify, file the separate NEC form instead of the NOI.
The most common mistake is checking “no exposure” while still storing materials under partial roofs; partial enclosure does not qualify. A misconception is that no exposure means no permit; the NEC is itself a permit instrument.
Section H — Operator Certification and Signature
Sign in blue ink (paper) or via NetDMR digital signature (electronic), enter the printed name, title, and date. Only a person meeting 40 CFR 122.22(a) — president, vice-president, secretary, treasurer, sole proprietor, general partner, or duly authorized representative — may sign. Maria Lopez, Managing Member, signs and dates 03/01/2026.
The edge case is a duly authorized representative: that delegation must be in writing, on file with IEPA, before the signature is valid. The most common mistake is having the SWPPP author (often a consultant) sign the NOI; consultants are not authorized signers under § 122.22, and IEPA voids the NOI. A misconception is that an electronic signature in Adobe is the same as a NetDMR signature; only NetDMR or wet ink is accepted.
Three Filled-Out Examples Using Real Scenarios
Scenario 1 — Carlos at Prairie Auto Salvage (SIC 5093, Sector N)
| Form Section | What Carlos Enters |
|---|---|
| A.1 Operator Legal Name | PRAIRIE AUTO SALVAGE INC |
| A.2 Operator Mailing Address | 4801 S CICERO AVE, CHICAGO, IL 60632 |
| A.3 Contact | CARLOS RIVERA, (773) 555-0188, criviera@prairiesalvage.com |
| B.1 Facility Site Name and Address | PRAIRIE SALVAGE YARD #2, 14200 S TORRENCE AVE, BURNHAM, COOK COUNTY, IL 60633 |
| B.2 Coordinates | 41.6377, -87.5503 |
| B.3 SIC and Sector | 5093 / Sector N |
| B.4 Receiving Water | LITTLE CALUMET RIVER, IL_HBA-04 |
| B.5 303(d) | YES — PCBs, mercury |
| C ESA | Criterion A — IPaC clear |
| H Signature | CARLOS RIVERA, PRESIDENT, 03/05/2026 |
Scenario 2 — Maria at Lopez Plastics LLC (SIC 3089, Sector Y)
| Form Section | What Maria Enters |
|---|---|
| A.1 Operator Legal Name | LOPEZ PLASTICS LLC |
| A.2 Operator Mailing Address | 1450 W INDUSTRIAL DR, JOLIET, IL 60435 |
| A.3 Contact | MARIA LOPEZ, (815) 555-0142, mlopez@lopezplastics.com |
| B.1 Facility Site Name and Address | JOLIET RESIN PLANT, 1450 W INDUSTRIAL DR, JOLIET, WILL COUNTY, IL 60435 |
| B.2 Coordinates | 41.5250, -88.0817 |
| B.3 SIC and Sector | 3089 / Sector Y |
| B.4 Receiving Water | HICKORY CREEK, IL_GLA-02 |
| B.5 303(d) | YES — fecal coliform |
| E SWPPP | Completed 02/15/2026 |
| H Signature | MARIA LOPEZ, MANAGING MEMBER, 03/01/2026 |
Scenario 3 — Janet at Midwest Freight Terminal (SIC 4213, Sector P)
| Form Section | What Janet Enters |
|---|---|
| A.1 Operator Legal Name | MIDWEST FREIGHT LINES INC |
| A.2 Operator Mailing Address | 700 E LAKE ST, BLOOMINGTON, IL 61701 |
| A.3 Contact | JANET KIM, (309) 555-0119, jkim@midwestfreight.com |
| B.1 Facility Site Name and Address | DECATUR TERMINAL 7, 2550 N BRUSH COLLEGE RD, DECATUR, MACON COUNTY, IL 62526 |
| B.2 Coordinates | 39.8956, -88.9601 |
| B.3 SIC and Sector | 4213 / Sector P |
| B.4 Receiving Water | SANGAMON RIVER, IL_E-19 |
| B.5 303(d) | YES — total suspended solids |
| D Historic | Criterion A — no ground disturbance |
| H Signature | JANET KIM, VICE PRESIDENT OPERATIONS, 03/12/2026 |
Aisha at Aurora Steel Recyclers (SIC 5015) and Marcus at Springfield Food Processing (SIC 2099) round out the named filers in this guide; both follow the same line-by-line approach with sector-specific monitoring under Sectors N and U respectively, drawing on the sector-specific tables in Part V.
How to File the Completed Form
Illinois accepts the ILR00 NOI through three channels, and each has a different processing time and proof-of-filing record. Choose carefully because changing channels mid-review forces a restart of the 30-day clock.
- Electronic via NetDMR / IEPA ePortal. Submit through the IEPA electronic permit system, pay the $500 fee through IEPA ePay by ACH or credit card, and download the system-generated confirmation PDF. Processing time runs about 14–20 days, and the PDF is the proof of filing.
- U.S. mail. Mail the signed original plus the $500 check (payable to “Illinois EPA”) to Illinois EPA, Bureau of Water, Permit Section, 1021 North Grand Avenue East, P.O. Box 19276, Springfield, IL 62794-9276. Use certified mail with return receipt; processing runs 30–45 days.
- Hand delivery. Drop the package at the IEPA Springfield headquarters front desk during business hours and request a date-stamped copy. Processing time matches mail.
- Fax. IEPA does not accept faxed NOIs; this channel was retired in 2018.
After submission, IEPA posts a 30-day public notice on its permit notices page. Coverage begins automatically 30 days after a complete NOI unless IEPA requests additional information or denies coverage.
What Happens After You File
IEPA’s Permit Section reviews the NOI for completeness within 10 business days and issues a coverage authorization letter that includes a permit tracking number in the format ILR00XXXX. The permit number must appear on every Discharge Monitoring Report (DMR) and on the SWPPP cover page going forward. The 30-day public notice period runs concurrently with internal review, and citizens may submit comments through the IEPA public participation portal.
Once authorized, the facility begins quarterly visual inspections, semi-annual benchmark monitoring (where required by sector), and an annual comprehensive site inspection. Annual reports are due by January 31 each year through NetDMR. The permit term is five years, and renewal NOIs must be filed at least 90 days before expiration. Failure to renew on time triggers a permit lapse and exposes the operator to per-day penalties under 415 ILCS 5/42.
If operations end or the facility is sold, file a Notice of Termination (NOT) within 30 days. The NOT closes out fee obligations and stops the inspection clock.
Mistakes to Avoid When Filling Out the Form
- Using a NAICS code instead of an SIC code. ILR00 is SIC-based, and NAICS entries cause IEPA to return the NOI as incomplete.
- Listing a d/b/a in Section A.1. The agency cannot match a d/b/a to Secretary of State records, which voids the operator entry.
- Estimating coordinates from Google Maps to two decimals. Appendix E ESA screening requires four-decimal precision, and shorter coordinates trigger a do-over.
- Skipping the 303(d) screening. A “No” answer without screening is a false certification under federal law.
- Letting a consultant sign the NOI. Consultants are not 40 CFR 122.22 signers; the signature is invalid and coverage never starts.
- Back-dating SWPPP completion. Federal false-statement penalties under 18 U.S.C. § 1001 apply, including criminal exposure.
- Forgetting the $500 annual fee. IEPA will not process the NOI until the fee is received, even if the form is perfect.
- Mixing up operator address and facility address. This sends inspection notices to the wrong location and creates missed-deadline violations.
- Marking “no exposure” while still storing scrap outside. Partial enclosure does not qualify; this misclassification is a frequent enforcement target.
- Failing to list secondary SIC codes. Each applicable sector adds monitoring; missing one means missing data, which is a permit violation.
- Missing the renewal deadline. A lapse exposes the operator to per-day penalties up to $66,712.
- Using an expired form revision. The 03/2021 revision is the current form; older versions are returned as incomplete.
Do’s and Don’ts
- Do pull receiving water names from the IEPA Integrated Report so spelling matches agency records and avoids a desk-review kickback.
- Do keep a date-stamped copy of every NOI page because IEPA can request resubmission years later during enforcement.
- Do run the IPaC ESA screening the same week you file because IPaC results expire after 90 days.
- Do train two staff members on NetDMR so a single person leaving never blocks an annual report.
- Do post the permit coverage letter on the SWPPP binder cover so inspectors find it within 60 seconds.
- Do budget for the $500 annual fee in your January cash plan to avoid lapsed coverage from a missed invoice.
- Don’t sign the NOI before the SWPPP is complete because the signature certifies a plan that must already exist.
- Don’t let consultants sign on your behalf without a written 40 CFR 122.22(b) authorization on file with IEPA.
- Don’t discharge before the 30-day public notice ends; pre-coverage discharge is unpermitted and penalty-eligible.
- Don’t ignore neighbor complaints because IEPA treats them as inspection triggers under 415 ILCS 5/4.
- Don’t skip quarterly inspections during winter; ILR00 requires them year-round.
- Don’t assume a No Exposure Certification removes all permit duties; the NEC must be renewed every five years.
Pros and Cons of Filing on Your Own vs. With Help
- Pro — Cost savings. Filing pro se costs only the $500 fee versus consultant fees of $2,500–$6,000.
- Pro — Direct knowledge of operations. Owners know SIC, drainage, and materials better than an outside reviewer.
- Pro — Faster turn on simple sites. A clean facility with one outfall can finish the NOI in a single afternoon.
- Pro — Builds compliance muscle. Doing it once teaches the staff how to handle annual reports and renewals.
- Pro — Direct relationship with IEPA staff. Reviewers respond faster to operators who know their site.
- Con — Easy to misclassify SIC and sector. A wrong SIC kicks the file back and costs weeks.
- Con — SWPPP authoring is technical. Best management practice selection often requires engineering judgment.
- Con — ESA and NHPA screenings have nuance. A missed listed species voids coverage retroactively.
- Con — Annual benchmark monitoring requires lab contracts. Without a consultant, you negotiate sample logistics yourself.
- Con — Enforcement exposure is personal. Officers who sign carry 40 CFR 122.22(d) liability.
ILR00 vs. EPA Multi-Sector General Permit
| Feature | ILR00 (Illinois) vs. MSGP (Federal) |
|---|---|
| Issuing agency | IEPA Bureau of Water; EPA Region for non-delegated states |
| Annual fee | $500 in Illinois; no fee under MSGP |
| Form | ILR00 NOI Rev. 03/2021; EPA NeT-MSGP electronic NOI |
| Sector coverage | 29 sectors in Illinois Appendix D; same 29 sectors federally |
| Renewal | Every 5 years; same federally |
| Public notice | 30 days at IEPA; 30 days at EPA |
| Impaired waters review | Illinois Integrated Report; EPA ATTAINS database |
| Signature rule | 40 CFR 122.22 in both |
FAQs
Do I list NAICS or SIC in Section B.3?
No. ILR00 is SIC-based per Appendix D of the permit. Entering NAICS causes IEPA to return the NOI as incomplete and restarts the 30-day public notice clock.
Can my consultant sign the NOI for me?
No. Only a 40 CFR 122.22 corporate officer, partner, sole proprietor, or duly authorized representative with written delegation on file with IEPA may sign the certification.
Is the $500 fee paid once or every year?
No. The fee is paid annually under 415 ILCS 5/12.5, and IEPA invoices each January. Missing a year voids coverage and triggers reinstatement procedures.
Do I write my mailing address or facility address in B.1?
No. Section B.1 takes the facility’s physical street address only. The operator mailing address goes in Section A.2; mixing them up causes inspection-letter misrouting.
Must I file if my facility has no exposure to rain?
No. A facility with truly no exposure files the No Exposure Certification (NEC) instead, but partial enclosure does not qualify.
Do I need a SWPPP before I file the NOI?
Yes. Section E certifies the SWPPP is complete and onsite as of the signature date, and back-dating exposes the signer to federal false-statement liability.
Can I use Google Maps coordinates in B.2?
Yes. Google Maps is acceptable only if you record four decimal places; lower precision triggers ESA screening errors.
Does discharging into a city storm drain exempt me?
No. Discharges into an MS4 still require ILR00 coverage, and the MS4 operator must be named in Section B.4.
Do I need to check the 303(d) list for every receiving water?
Yes. Every NOI must screen against the Illinois Integrated Water Quality Report, and a missed impairment is a false certification.
How long does ILR00 coverage last?
Yes — five years. The current term runs through March 31, 2026, with a renewal reissuance currently in IEPA public notice.
Can I file the NOI by fax?
No. IEPA retired fax submissions in 2018; only electronic, mailed, or hand-delivered NOIs are accepted.
Does my permit transfer when I sell the facility?
No. The buyer must file a new NOI within 30 days of the sale, and the seller files a Notice of Termination to close out fee obligations.
Do I list every secondary SIC code?
Yes. Each applicable sector triggers its own monitoring under Part V; missing a secondary code is a permit violation that surfaces on the next inspection.
Is the public notice period waivable?
No. The 30-day public notice under 35 Ill. Adm. Code Part 309 is mandatory and cannot be shortened by request.
Related reading
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- How to Fill Out Illinois IEPA NPDES Construction Stormwater Permit + FAQs
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