Illinois
Illinois issues its own construction general permit. We have read General NPDES Permit No. ILR10 for Storm Water Discharges From Construction Site Activities and list below the requirements we could cite to it, with the scope limits stated plainly. Screen your own acreage further down.
Who may prepare the plan
No preparer credential foundNo preparer credential was found for Illinois. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
State law is a floor: Cook County MWRD ordinance section 303.2.A(3) effectively requires a PE seal within Illinois.
No permit section cited. Confirm this with your permitting authority.
Coverage trigger
The project disturbs 3 acres, at or above the 1 acre threshold, so it needs permit coverage.
The trigger people miss is the second one. A half acre lot inside a 40 acre subdivision is covered, because the larger common plan of development or sale is what counts, not the lot.
Worked for a three acre site with the receiving water unconfirmed. Each line says why it attached to this site rather than in general. Check the notes above for the site sizes this permit does not cover.
The SWPPP must be completed prior to the start of construction activities to be covered under this permit and submitted electronically to the Agency at the same time the Notice of Intent is submitted.
Be completed prior to the start of the construction activities to be covered under this permit and submitted electronically to the Agency at the time the Notice of Intent is submitted
The NOI (with SWPPP) must be submitted with enough lead time to allow a 30-day Agency review period prior to the start of construction. Discharge authorization begins 30 days after the Agency receives the NOI and SWPPP, unless the Agency notifies the discharger otherwise.
Why this applies here: This is the deadline for a new site. A transfer to a new operator or an emergency related project has a different deadline.
Unless notified by the Agency to the contrary, dischargers who submit an NOI and a stormwater pollution prevention plan (SWPPP) in accordance with the requirements of this permit are authorized to discharge storm water from construction sites under the terms and conditions of this permit in 30 days after the date the NOI and SWPPP are received by the Agency.
The permittee must submit a Notice of Termination once the site has completed final stabilization and all authorized construction stormwater discharges have been eliminated. The permit text does not state a fixed number of days within which the NOT must be filed after that trigger occurs.
Where a site has completed final stabilization and all storm water discharges from construction activities that are authorized by this permit are eliminated, the permittee must submit a completed Notice of Termination (NOT) that is signed in accordance with Part VI.G (Signatory Requirements) of this permit.
Qualified personnel must inspect disturbed unstabilized areas, structural control measures, and vehicle entry/exit points at least once every 7 calendar days, and additionally within 24 hours (or by the end of the next business/work day) of a storm event of 0.50 inches or greater.
Why this applies here: You have not confirmed whether the site discharges to an impaired or high quality water. If it does, the increased frequency applies instead and this answer changes.
Qualified personnel (provided by the permittee) shall inspect disturbed areas of the construction site that have not been finally stabilized, structural control measures, and locations where vehicles enter or exit the site at least once every seven calendar days and within 24 hours of the end of a storm or by the end of the following business or work day that is 0.50 inches or greater.
Qualified personnel means a person knowledgeable in the principles and practices of erosion and sediment controls measures, such as a licensed Professional Engineer (P.E.), a Certified Professional in Erosion and Sediment Control (CPESC), a Certified Erosion Sediment and Storm Water Inspector (CESSW), a Certified Stormwater Inspector (CSI), a person that has successfully completed the Federal CGP Inspector Training offered by USEPA, or other knowledgeable person who possesses the skills to assess conditions at the construction site that could impact storm water quality.
Why this applies here: This is why Basinwise cannot perform your inspections. The permit requires a trained person physically on the site.
Qualified personnel means a person knowledgeable in the principles and practices of erosion and sediment controls measures, such as a licensed Professional Engineer (P.E.), a Certified Professional in Erosion and Sediment Control (CPESC), a Certified Erosion Sediment and Storm Water Inspector (CESSW), a Certified Stormwater Inspector (CSI), a person that has successfully completed the Federal CGP Inspector Training offered by USEPA, or other knowledgeable person who possesses the skills to assess conditions at the construction site that could impact storm water quality and to assess the effectiveness of any sediment and erosion control measures selected to control the quality of storm water discharges from the construction activities.
Stabilization must be initiated within 1 working day of permanent cessation of earth-disturbing activities on any portion of the site, or of temporary cessation where activity will not resume for more than 14 calendar days.
Why this applies here: This applies at both land disturbance amounts.
Stabilization of disturbed areas must, at a minimum, be initiated immediately whenever any clearing, grading, excavating or other earth disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 calendar days. Stabilization of disturbed areas must be initiated within 1 working day of permanent or temporary cessation of earth disturbing activities and shall be completed as soon as possible but not later than 14 days from the initiation of stabilization work in an area.
Corrective Actions shall be completed as soon as possible and documented within 7 days in an Inspection Report or report of noncompliance.
Corrective Actions shall be completed as soon as possible and documented within 7 days in an Inspection Report or report of noncompliance. If it is infeasible to complete the installation or repair within seven (7) calendar days, you must document in your records why it is infeasible to complete the installation or repair within the 7-day timeframe.
For discharges from construction activity within 50 feet of a Water of the United States (except water-dependent structures authorized under Section 404), the permittee must either provide a 50-foot undisturbed natural buffer between the construction activity and the water, or provide additional erosion and sediment controls within that area.
For any stormwater discharges from construction activities within 50 feet of a Waters of the United States, except for activities for water-dependent structures authorized by a Section 404 permit, the permittee shall: (i) Provide a 50-foot undisturbed natural buffer between the construction activity and the Waters of the United States; or (ii) Provide additional erosion and sediment controls within that area.
The permittee shall notify the appropriate Agency Field Operations Section office by email, telephone or fax within 24 hours of any incidence of noncompliance for any violation of the SWPPP observed during any inspection, or for violations of any permit condition.
The permittee shall notify the appropriate Agency Field Operations Section office by email at: [email protected], telephone or fax (see Attachment A) within 24 hours of any incidence of noncompliance for any violation of the storm water pollution prevention plan observed during any inspection conducted, or for violations of any condition of this permit.
SWPPP copies, all reports and notices required under the permit, records of data used to complete the NOI, and the Agency's Notice of Permit Coverage letter must be retained for at least 3 years from the date permit coverage expires or is terminated.
Why this applies here: The clock runs from permit expiry or termination, not from when the record was written, so on a multi year project every record stays live for the whole project plus three years.
The permittee shall retain copies of storm water pollution prevention plans and all reports and notices required by this permit, records of all data used to complete the Notice of Intent to be covered by this permit and the Agency Notice of Permit Coverage letter for a period of at least three years from the date that the permit coverage expires or is terminated.
Your acreage, your receiving water, your answer. Runs in your browser, nothing is transmitted.
This is EPA's list, from the 2022 Construction General Permit. It does NOT govern in Illinois, where the state issues its own permit and sets its own contents. It is here as a shape to expect, not as the requirement you will be held to.
Read the permit itself at the source document.
Illinois issues its own construction general permit, and we have read General NPDES Permit No. ILR10 for Storm Water Discharges From Construction Site Activities. The requirements listed on this page, such as inspection frequency, who may inspect, stabilisation, corrective action and record retention, are cited to that permit rather than to EPA's. Anything we have not transcribed is left out instead of assumed to match the federal rule, and the scope note on this page says which sites the permit does not cover. Confirm the current permit and any site-size variant with Illinois Environmental Protection Agency (Illinois EPA), Division of Water Pollution Control.
No preparer credential was found for Illinois. On what we have verified, a generated plan can be adopted by the operator without a credentialed signature. Local ordinances can still be stricter than state law.
The inspection frequency is set by the Illinois construction general permit, which we have not read. Confirm it with Illinois Environmental Protection Agency (Illinois EPA), Division of Water Pollution Control.
Screening is free. Pro generates the site specific plan document and retains the inspection and corrective action log.