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Specify that 4 litre samples of topsoil, from each source to be drawn upon, be provided to the consultant for visual inspection, along with topsoil quality test results from an accredited soil testing laboratory, or a quality assurance certificate from the supplier.  
 
Specify that 4 litre samples of topsoil, from each source to be drawn upon, be provided to the consultant for visual inspection, along with topsoil quality test results from an accredited soil testing laboratory, or a quality assurance certificate from the supplier.  
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We recommend a planting soil depth of 300 mm for planting turf areas, and 550 mm for planting perennials, shrubs and trees.
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We recommend a planting soil depth of 300 mm for planting turf areas, 600 mm for shrubs and perennials, and 1000 mm for trees.
    
For use in producing a bioretention filter media blend, specify that the topsoil used must contain at least 9%, and not greater than 36% clay-sized particles.
 
For use in producing a bioretention filter media blend, specify that the topsoil used must contain at least 9%, and not greater than 36% clay-sized particles.
    
[[category: materials]]
 
[[category: materials]]

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