From Ontario
Thru Montreal-Champlain Bridge-Highway 10 to Highway 30 direction Chateauguay and follow same above

From New York
I-87 will lead you Highway 15 to Highway 30 direction Sorel- Exit 104 direction St. Jean sur Richelieu and follow same as above

From Vermont

I-89 after Border crossing follow directions to Montreal until you see 104 -Laprairie keep right after approx 12 km turn right at Hydro Poste Hertel sign -Chemin Lafreniere and follow same as above.

GPS :

45°24'29.00"N

73°26'4.00"W