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

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87.24. Leaching field consisting of a seepage bed: A leaching field consisting of a seepage bed must comply, as the case may be,
(a)  with the standards in subparagraphs a, d to g.3, h and h.1 of the first paragraph of section 21, with the standards in sections 24 and 25, with the necessary modifications, and with the standards in subparagraphs a and c of the first paragraph of section 27 where it is built with a gravity feed system; or
(b)  with the standards in subparagraphs d, e, f, g, g.1 and g.2 of the first paragraph of section 21 and subparagraphs a and b of the second paragraph of that section, sections 24 and 25, with the necessary modifications, and subparagraphs a and c of the first paragraph of section 27 where it is built with a low pressure feed system.
The first paragraph does not apply if the seepage bed is located immediately under a standard sand-filter bed, an advanced secondary treatment system or a tertiary treatment system which uniformly distributes the effluent on the leaching field and if the seepage bed does not exceed the base of the systems by more than 2.6 m. In the latter case, a layer of gravel or crushed stones at least 15 cm thick and complying with subparagraph f of the first paragraph of section 21 must be spread over all the seepage surface.
Where the disposal site is of high permeability soil, the distance between the bottom of the seepage bed and the bedrock, underground water and layer of impermeable, low permeability or permeable soil must be at least 60 cm.
Where the disposal site is of permeable soil or low permeability soil, the distance between the bottom of the seepage bed 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. 10; 306-2017O.C. 306-2017, s. 50.
87.24. Leaching field consisting of a seepage bed: A leaching field consisting of a seepage bed must comply, as the case may be,
(a)  with the standards in subparagraphs a, d to g.3, h and h.1 of the first paragraph of section 21, with the standards in section 25, with the necessary modifications, and with the standards in subparagraphs a and c of the first paragraph of section 27 where it is built with a gravity feed system; or
(b)  with the standards in subparagraphs d, e, f, g, g.1 and g.2 of the first paragraph of section 21 and subparagraphs a and b of the second paragraph of that section, section 25, with the necessary modifications, and subparagraphs a and c of the first paragraph of section 27 where it is built with a low pressure feed system.
The first paragraph does not apply if the seepage bed is located immediately under a standard sand-filter bed, an advanced secondary treatment system or a tertiary treatment system which uniformly distributes the effluent on the leaching field and if the seepage bed does not exceed the base of the systems by more than 2.6 m. In the latter case, a layer of gravel or crushed stones at least 15 cm thick and complying with subparagraph f of the first paragraph of section 21 must be spread over all the seepage surface.
Where the disposal site is of high permeability soil, the distance between the bottom of the seepage bed and the bedrock, underground water and layer of impermeable, low permeability or permeable soil must be at least 60 cm.
Where the disposal site is of permeable soil or low permeability soil, the distance between the bottom of the seepage bed 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. 10.