The swelling of backfill can not be harmful to your health .The Montérégie Public Health Department says the quantities of sulfuric acid are too minute to cause health problems.
Pyrite Pro is your excavation contractor for Delson, South Shore of Montreal (mtl) close to Candiac, La Prairie, Brossard / Dix30, St-Constant. we are specialized in foundation repair, pyrite removal, excavation and pyrite decontamination, French,drains and the repairing of cracks along the foundation, pavers and concrete
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