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  • SEPTIC DESIGN.CA - Gunnell Engineering Ltd Website
    +1.905.868.9400
    1110 Stellar Drive Unit 106, Newmarket, ON L3Y 7B7

    Gunnell Engineering designs on‑site sewage systems for residential, commercial, industrial and recreational projects across Ontario. Services include new septic installations, system upgrades, replacements, and specialized treatment designs, delivering complete site plans, grading and drawing packa…