Changes

====1. Leachate Test====

====1. Leachate Test====

As required by [https://www.ontario.ca/laws/regulation/900347 O.Reg. 347], testing of leachate toxicity by the Toxicity Characteristic Leaching Procedure (TCLP), establishes whether or not the sediment is hazardous waste, which would then require proper disposal at a hazardous waste facility. The TCLP uses an acetic acid solution designed to simulate a possible worst-case leaching conditions scenario that could occur on a given study site that contains contaminated soils, or any other organic matter that will degrade over time (putrefaction) (Intrakamhaeng, et al. 2019<ref>Intrakamhaeng, V., Clavier, K.A., Roessler, J. G., and Townsend, T. G. 2019. Limitations of the toxicity characteristic leaching procedure for providing a conservative estimate of landfilled municipal solid waste incineration ash leaching, Journal of the Air & Waste Management Association, 69:5, 623-632, DOI: 10.1080/10962247.2019.1569172</ref>. This information is typically required by the MECP as a key first step in characterizing sediment. It may be advisable to conduct this analysis concurrently with Step 2 ([https://www.ontario.ca/laws/regulation/040153 O.Reg. 153/04 Bulk Soil Analysis]) so that samples for both tests can be collected during the same visit.

As required by [https://www.ontario.ca/laws/regulation/900347 O.Reg. 347], testing of leachate toxicity by the Toxicity Characteristic Leaching Procedure (TCLP), establishes whether or not the sediment is hazardous waste, which would then require proper disposal at a hazardous waste facility. The TCLP uses an acetic acid solution designed to simulate a possible worst-case leaching conditions scenario that could occur on a given study site that contains contaminated soils, or any other organic matter that will degrade over time (putrefaction) (Intrakamhaeng, et al. 2019<ref>Intrakamhaeng, V., Clavier, K.A., Roessler, J. G., and Townsend, T. G. 2019. Limitations of the toxicity characteristic leaching procedure for providing a conservative estimate of landfilled municipal solid waste incineration ash leaching, Journal of the Air & Waste Management Association, 69:5, 623-632, DOI: 10.1080/10962247.2019.1569172</ref>. This information is typically required by the MECP as a key first step in characterizing sediment. It may be advisable to conduct this analysis concurrently with Step 2 ([https://www.ontario.ca/laws/regulation/040153 O.Reg. 153/04 Bulk Soil Analysis]) so that samples for both tests can be collected during the same visit.