PROPOSED INERT FILL REG PUBLISHED
Ontario?? MOE To Clarify Contaminated Fill Exemptions
Draft Criteria for the Management of Inert Fill were released for public comment on August 20, 1998, in the form of proposed amendments to General Waste Reg. 347. Permitted uses of inert fill will be directly related to contamination levels set out in the Guideline For Use At Contaminated Sites In Ontario (February 1997) - (Guideline).
Coherent fill criteria should help expedite site clean-up and redevelopment. Clear rules regulating the use of fill and exemptions from approval requirements should reduce costs and red tape. The current definition of "inert fill" in Reg. 347 is very restrictive, resulting in costly disposal of large quantities of soil in landfill sites. Property owners, developers, contractors and consultants have impatiently awaited more flexible fill regulation during the years it took the MOE to discuss, consult and finalized contaminated site clean-up guidelines.
The new approach is simpler, and less stringent than the 1993 Proposed Policy for Management of Excess Soil, Rock and Like Materials. That proposal, together with recommnedations by the now-defunct Advisory Committee on Environmental Standards (ACES), created a complex assessment and management process, including permit-by-rule approval for urban residential and urban industrial fill, and a class of "controlled fill," to be used only at licensed sites.
The 1998 proposals will mean that substantial quantities of low-level contaminated soil will be freed from regulatory controls. This soil will no longer have to be disposed in licensed landfill sites, significantly decreasing the cost of site clean-up and redevelopment.
The 1998 exemptions from waste controls will include:
- four classes of inert fill to be exempt from approvals;
- on-site exemptions; and
- clean-up site exemptions.
Inert Fill Exemption:
Inert fill classes will be based on contaminant concentrations for 83 substances specified in the regulation. These concentrations are the same ones currently used as background or generic levels in the Guideline. This will be the first time that clean-up numbers from the Guideline will be incorporated into a regulation. However, the criteria in the regulation are not specifically referred to the Guideline, so future changes to clean-up criteria will not automatically change inert fill criteria - the regulation will have to change.
The four inert fill classes are designated as waste, but exempted from waste controls as described below:
- Class I - not exceeding background levels for Agricultural Land Use(Guideline Table F), plus uncoated concrete or brick. Exempt from all waste controls, and suitable for any land use.
- Class II - not exceeding background levels for All Other Land Uses (Guideline Table F). Exempt from waste controls but may not be used in an "ecologically sensitive area".
- Class III - not exceeding generic clean-up criteria for Agricultural land use in potable groundwater situation (Table A - coarse soil texture values). Exempt from waste controls but may not be used in a residential area or "ecologically sensitive area".
- Class IV - not exceeding generic clean-up criteria for Industrial/commercial land use in potable groundwater situations (Table A - coarse soil texture values). Exempt from waste controls for use in industrial or commercial area, but may not be used in an agricultural, residential or "ecologically sensitive area".
Notably, the proposed fill criteria tables include background (Class I and II) values for petroleum hydrocarbons (gas, diesel and heavy oil), although none are provided in the Guideline.
On-site Exemption:
The on-site exemption permits the excavation and movement of rock and soil fill on-site without regard to the degree of contamination. Foundry sand is excluded from the exemption. Rock and soil excavated to install utilities and services and used to backfill the installations will be exempt from waste controls.
Clean-up Site Exemption:
Contaminated soil and rock can be imported and dumped at a site undergoing clean-up, without waste controls, if contaminant concentrations meet the site?? remedial workplan (prepared under the Guideline). This exemption will permit the disposal of foundry sand and similar wastes and contaminated material to fill excavations made by removing material too contaminated to meet the remedial workplan.
Deadline for comments on the proposed criteria is October 31, 1998. The proposed amendments can be downloaded from the Ministry of the Environment at: http://www.ene.gov.on.ca/envision/env_reg/documents/a/ra8e0030.pdf
For legal advice on contaminated land and redevelopment issues call Donna Shier (416) 862-4822 or Doug Petrie at (416) 862-4835. Visit the Willms & Shier Website at http://www.willmsshier.com.
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