# 8 Ill. Adm. Code 258.50: Section 258.50 Remediation Suitability Determination

> Illinois · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_50

## Section

- **Citation:** 8 Ill. Adm. Code 258.50
- **Heading:** Section 258.50 Remediation Suitability Determination
- **Jurisdiction:** Illinois
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Illinois Administrative Code / Title 8 AGRICULTURE AND ANIMALS / CHAPTER I: DEPARTMENT OF AGRICULTURE / Part 258 LAND APPLICATION AUTHORIZATION PROGRAM / Section 258.50 Remediation Suitability Determination

## Text

Section 258
Section 258.50  Remediation
Suitability Determination
Contaminated soil  that is the
subject of an application for Department issuance of written authorization for
land application must be evaluated for  remediation suitability in accordance
with this Section.
a)         The applicant must develop an appropriate, site-specific list
of agrichemicals known or suspected to have been released at the spill site.
The compounds  included in Appendices A and B of this Part may  serve as a
guide to the applicant in the development of the site-specific list of target
pesticides and nutrients.  Unless affirmatively demonstrated that an
agrichemical has not been stored, mixed or loaded at the spill site, all
pesticides listed in Appendix B must be considered target agrichemicals.
b)         The contaminated soil  must be sampled in accordance with the requirements
of this Part and analyzed for the presence and concentration of the target
agrichemicals
included on the list of compounds  required in subsection (a) of this Section.
c)         If the list required in subsection (a) of this Section
includes any of the pesticides listed  in Appendix A of this Part, the mean concentration
of the pesticide in the soil must be determined in accordance with the sampling
and analysis procedures of Section 258.90. The mean pesticide concentrations of
the contaminated soil must be compared to its associated Remediation
Suitability Determination Level (RSDL) obtained from Appendix A of this Part.
If the mean remediation media concentration for any pesticide listed in
Appendix A of this Part is equal to or greater than its associated Remediation
Suitability Determination Level,  the contaminated soil may not be suitable for
land application.

## Nearby sections

- [8 Ill. Adm. Code 258.10 Section 258.10  Applicability](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_10.md)
- [8 Ill. Adm. Code 258.20 Section 258.20  Severability](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_20.md)
- [8 Ill. Adm. Code 258.30 Section 258.30  Definitions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_30.md)
- [8 Ill. Adm. Code 258.40 Section 258.40  Incorporation by Reference](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_40.md)
- [8 Ill. Adm. Code 258.50 Section 258.50  Remediation Suitability Determination](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_50.md)
- [8 Ill. Adm. Code 258.60 Section 258.60  Written Authorization for Land Application](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_60.md)
- [8 Ill. Adm. Code 258.70 Section 258.70  Operational Control Practices, Limitations and Restrictions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_70.md)
- [8 Ill. Adm. Code 258.80 Section 258.80  Closure Reporting](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_80.md)
- [8 Ill. Adm. Code 258.90 Section 258.90  Sampling and Analysis](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_90.md)
- [8 Ill. Adm. Code 258.100 Section 258.100  Penalties and Enforcement](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_100.md)
- [8 Ill. Adm. Code 258.APPENDIX Section 258.APPENDIX  D   Land Application Area Sampling](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_APPENDIX.md)

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T8_P258_S258_50. Check the current official text before relying on it. Not legal advice.