Q-2, r. 22 - Regulation respecting waste water disposal systems for isolated dwellings

Full text
87.22. Leaching field consisting of trenches: A leaching field consisting of absorption trenches must comply, as the case may be,
(a)  with the construction standards in subparagraphs a to h.1 of the first paragraph of section 21 and with those in section 25, with the necessary modifications, where it is built with a gravity feed system; or
(b)  with the construction standards in subparagraphs b, c, d, e, f, g, g.1, g.2 and g.4 of the first paragraph of section 21, with those in subparagraphs a and b of the second paragraph of section 21 and with those in section 25, with the necessary modifications, where it is built with a low pressure feed system.
Where the disposal site is made of high permeability soil, the distance between the bottom of the trench and the bedrock, the underground water or the layer of impermeable, low permeability or permeable soil must be at least 60 cm.
Where the disposal site consists of permeable soil or low permeability soil, the distance between the bottom of the trench and the bedrock, underground water or layer of impermeable soil must be at least 30 cm.
O.C. 786-2000, s. 69; O.C. 1158-2004, s. 9.