b'REHABILITATIONRehabilitation FACTORS WHEN CONSIDERING AFTER USESFactors that are considered when selecting an appropriate after use include:Surrounding land usespresent and future Surrounding ecological/natural heritage systemsStakeholder input (neighbours, municipalities, special interest groups, partners)Method of extraction (depth, proximity to water table) Available resources (topsoil, overburden, seed bank, transplanting opportunities) Relief or topography of the areaGeology of the depositINNOVATION AGGREGATE REHABILITATIONTheaggregateindustryisalwayslookingforinnovativeIN ONTARIOapproachestoadvancerehabilitationeffortsandproducers often participate in research that will help create more uniqueIn 2009, the Province of Ontario released SAROS Paper 61: landformsorfunctionalecosystems(includingspeciesatriskRehabilitation (the sixth part in a series of studies that helped habitat) after extraction is complete. One such example is theto better define the state of aggregate resources in Ontario). research conducted by Lafarge on reforestation techniques at theTheSAROSstudyfoundthatatmanysitesinOntario, Uxbridge Pit. Rehabilitation at the Uxbridge Pit was designed torehabilitationisoccurring,withlandbeingconverted re-establish a forest linkage between the Durham Regional Foresttoproductiveagricultureorforestry.Aggregatesites and the Oak Ridges Moraine Core Area.rehabilitated to naturalized landscapes also have increasing levels of biodiversity. Lafargeaccomplishedthisbyplantingover50,000trees (including nodal plantings of a variety of shrubs and bushes).Between2010and2014,OSSGAassessedthecondition The company also monitored and analyzed soil conditions andof 701 pits and quarries across southern Ontario to identify fertilization to determine the most appropriate species to plant. rehabilitation trends in Ontario. The results for common land Under the Management of Abandoned Aggregate Propertiesuses for rehabilitated aggregate sites were determined to be: Program (MAAP), the Ontario Aggregate Resources CorporationNatural (25 per cent), Agriculture (21 per cent), Open Space, (TOARC)rehabilitatesformerpitsandquarriesdeemedto(15 per cent) and Water (10 per cent). Results showed that be abandoned at no cost to the property owner (rehabilitationformeraggregatesitescanbesuccessfullyintegratedinto work is paid for from a portion of the licence fee collected fromtheir surrounding environments after extraction operations aggregate producers). This program includes an online reportingare completed. The data also demonstrated that rehabilitated tool to allow for easy access to information on legacy pits andsitestendtobecompatiblewithsurroundinglanduses, quarries across the province. TOARC also contains an electronicaggregate extraction is a temporary land use and, in protected databaseofsurrenderedaggregatelicencesandpermitsinareas, many rehabilitated aggregate sites have reverted back Ontario, which provides photos and information on rehabilitatedto appropriate land uses.land uses of formerly licensed pits and quarries. Additionally, TOARC undertakes a number of research projects and publishesLearn more about rehabilitation of Ontario pits and quarries at rehabilitation guidance for the aggregate industry. GravelFacts.ca.WERECRUSHING IT!Solutions to maximizeyour productivity.WINTER 2022AVENUES 33'