jswizzle3737/ontario_laws_and_regs huggingface dataset:
Notes to Table 8.2.1.3.B.:
8.5.2.1. Construction Requirements (1) The bottom of the cesspool shall be at least 900 mm above the high ground water table. (2) The cesspool shall be constructed in such a manner as to prevent the collapse of its sidewalls. (3) Any material used to support or form the sidewalls of the cesspool shall be an open jointed material of a type that will permit leaching from the cesspool. (4) The cesspool shall be provided with a tight strong cover that shall remain over the cesspool except when it is necessary to remove it for the purposes of adding sanitary sewage to or removing sanitary sewage from the cesspool or for purposes of maintenance of the cesspool. (5) Where the cesspool extends to the ground surface, the cover required in Sentence (4) shall be lockable. (6) The soil or leaching bed fill around the perimeter of the cesspool shall be raised or mounded to a height of at least 150 mm above ground level. (7) The surface of the ground in the area of the cesspool shall be graded such that surface drainage in the area will be diverted away from the cesspool. (8) The cesspool shall be surrounded on all sides and on its bottom by at least 600 mm of soil or leaching bed fill, except the top where the cesspool extends to the surface of the ground. Section 8.6. Class 4 Sewage Systems 8.6.1. General Requirements
Notes to Table 8.2.1.3.B.:
8.6.1.1. Scope (1) This Section applies to the construction
of a Class 4 sewage system.
Notes to Table 8.2.1.3.B.:
8.6.1.2. General Requirements (1) The treatment unit shall be connected to a leaching bed constructed in accordance with the requirements of Section 8.7.
Notes to Table 8.2.1.3.B.:
8.6.1.3. Pumps and Siphons (1) Where the total length of distribution pipe
or leaching chamber required is 150 m or more, the sewage system shall have at least one pump or a siphon contained in a dosing tank that may be a separate compartment within the tank structure, for distribution of the effluent. (1.1) Where the total length of leaching chamber is 150 m or more, a distribution pipe shall be installed at the centreline of the leaching chamber and extend the total length of leaching chamber to allow for dosing of the effluent. (2) Alternating siphons shall not be installed in a sewage system. (3) Where 2 or more pumps are employed within a dosing tank, the pumps shall be designed such that the pumps alternate dosing, and dosing shall continue in the event that one pump fails. (4) Where a pump or siphon is required, the pump or siphon shall be designed to discharge a dose of at least 75% of the internal volume of the distribution pipe within a time period not exceeding fifteen minutes. (5) Where a pump or siphon is required, the pump or siphon shall be equipped with a device that shall produce an audible and visual alarm signal that indicates a high water level in the pump or siphon chamber. 8.6.2. Treatment Units
Notes to Table 8.2.1.3.B.:
8.6.2.1. Septic Tank Systems (1) An effluent filter shall be installed in the outlet flow path of every septic tank that discharges effluent to a leaching bed. (2) The septic tank effluent
filter required by Sentence (1) shall, (a) conform to the requirements of NSF/ANSI 46, “Evaluation of Components and Devices Used in Wastewater Treatment Systems”, (b) be sized to filter particles of 1.6 mm, (c) have a minimum area of 550 cm2, and (d) be installed in accordance with the manufacturer’s recommendations. (3) A secured access opening to allow for regular maintenance of the effluent filter shall be provided at the ground surface.
Notes to Table 8.2.1.3.B.:
8.6.2.2. Other Treatment Units (1) Except as provided in Sentence (2), a treatment unit, other than a septic tank, shall be designed such that the effluent does not exceed, for the level of the treatment unit set out in Column 1 of Table 8.6.2.2., the maximum concentrations set out opposite it in Columns 2 and 3 of Table 8.6.2.2. Table 8.6.2.2.   Other Treatment Unit Effluent Quality Criteria Forming Part of Sentences 8.6.2.2.(1) and (2) Item   Column 1 Classification of Treatment Unit(1)   Column 2 Suspended Solids(2)   Column 3 CBOD5(2) 

  1.   Level II   30   25 

  2.   Level III   15   15 

  3.   Level IV   10   10
Notes to Table 8.6.2.2.:
8.7.1.1. Scope (1) This Section applies to the construction
of leaching beds.
Notes to Table 8.6.2.2.:
8.7.1.2. Limitation on Installation (1) The design and installation of a shallow buried trench, Type A dispersal bed or Type B dispersal bed shall be carried out by a person competent in this field of work. 8.7.2. Design and Construction Requirements
Notes to Table 8.6.2.2.:
8.7.2.1. General Requirements (1) A leaching bed shall not be located, (a) in an area that has an average slope that exceeds one unit vertically to four units horizontally, (b) in soil or
leaching bed fill having a percolation time of, (i) less than one minute, or greater than 125 minutes if constructed
as a shallow buried trench, or (ii) less than one minute, or greater than 50 minutes for all other leaching beds, or (c) in or on an area that is subject to flooding that may be expected to cause damage to the leaching bed or impair the operation of the leaching bed. (2) A leaching bed shall not be covered with any material having a hydraulic conductivity less than 0.01 m/day. (3) The surface of the leaching bed shall be shaped to shed water and together with the side slopes of any raised portion, shall be protected against erosion in such a manner as to not inhibit the evaporation and transpiration of waters from the soil
or leaching bed fill, and to not cause plugging of the distribution pipe. (4) No part of a leaching bed shall be sloped steeper than 1 unit vertically to 4 units horizontally. (5) A leaching bed shall be designed to be protected from compaction or any stress or pressure that may result in, (a) the impairment or destruction of any pipe in the leaching bed, or (b) the smearing of the soil or leaching bed fill.
Notes to Table 8.6.2.2.:
8.7.2.2. Distribution Pipes within Leaching Beds (1) Sentence (2) applies to the design and construction
of a leaching bed with distribution pipes used within the leaching bed. (2) The header line and distribution pipes
within a leaching bed shall be designed and constructed so that they can be detected by, (a) magnetic means, (b) means of a 14 gauge TW solid copper light coloured plastic coated tracer wire, or (c) other means of subsurface detection.
Notes to Table 8.6.2.2.:
8.7.2.3. Leaching Chambers within Leaching Beds (1) Leaching chambers are permitted for use in conjunction with an absorption trench,
shallow buried trench, filter bed or Type A dispersal bed. (2) Leaching chambers shall comply with the dimension requirements for either a Type I or Type II leaching chamber listed in Table 8.7.2.3. Table 8.7.2.3.   Leaching Chamber Dimensions Forming Part of Sentence 8.7.2.3.(2) Item   Column 1 Type of Leaching Chamber   Column 2 Width, mm   Column 3 Height, mm 

  1.   Type I   380 to 410   280 to 305 

  2.   Type II   555 to 575   300 to 320 (3) Leaching chambers shall conform to the requirements of IAPMO PS 63, “Plastic Leaching Chambers”. (4) The header line and leaching chambers within a leaching bed shall be designed and constructed so that they can be detected by, (a) magnetic means, (b) means of a 14 gauge TW solid copper light coloured plastic coated tracer wire, or (c) other means of subsurface detection. 8.7.3. Absorption Trench Construction
Notes to Table 8.6.2.2.:
8.7.3.1. Length of Distribution Pipe (1) The total length of distribution pipe shall, (a) not be less than 30 m when constructed as a shallow buried trench, or (b) not be less than 40 m for any other absorption trench. (2) Except as provided in Sentences (1), (3), and (4) every leaching bed constructed by means of absorption trenches shall have a total length of distribution pipe not less than the value determined by the formula,  where, L = total length of distribution pipe in metres, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time. (3) Except as provided in Sentence (1), where a leaching bed receives effluent from a Level II, Level III or Level IV treatment unit as described in Table 8.6.2.2., the leaching bed may have a total length of distribution pipe not less than the value determined by the formula,  where, L = total length of distribution pipe in metres, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time. (4) Except as provided in Sentence (1), where the leaching bed is constructed as a shallow buried trench, the total length of the distribution pipe shall not be less than the value determined by Table 8.7.3.1. Table 8.7.3.1.   Length of Distribution Pipe in Shallow Buried Trench Forming Part of Sentence 8.7.3.1.(4) Item   Column 1 Percolation Time, (T) of Soil, min   Column 2 Length of Distribution Pipe, m  

  1.   1 < T ≤ 20    Q/75  

  2.   20 < T ≤ 50    Q/50  

  3.   50 < T < 125    Q/30 where, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time.
Notes to Table 8.6.2.2.:
8.7.3.1A. Length of Leaching Chamber (1) The total length of leaching chamber shall, (a) not be less than 30 m when constructed as a shallow buried trench, or (b) not be less than 40 m for any other absorption trench. (2) Except as provided in Sentences (1) and (3), the total length of leaching chamber
shall not be less than the value determined by the formula, L = QT/200, for a Type I leaching chamber, or L = QT/300, for a Type II leaching chamber, where, L = total length of leaching chamber in metres, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time. (3) When a treatment unit described in Article 8.6.2.2. is used in conjunction with a leaching chamber, the total length of leaching chamber shall not be less than the value determined by the formula, L = QT/300 where, L = total length of leaching chamber in metres, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time. (4) Except as provided in Sentence (1), where the leaching bed is constructed as a shallow buried trench, the total length of leaching chamber shall not be less than the value determined by Table 8.7.3.1A. Table 8.7.3.1A.   Length of Leaching Chamber in Shallow Buried Trench Forming Part of Sentence 8.7.3.1A.(4) Item   Column 1 Percolation Time, (T) of Soil, min   Column 2 Length of Leaching Chamber, m 

  1.   1 < T ≤ 20   Q/75 

  2.   20 < T ≤ 50   Q/50 

  3.   50 < T < 125   Q/30 where, Q = the total daily design sanitary sewage flow in litres, and T = the design percolation time.
Notes to Table 8.6.2.2.:
8.7.3.2. Absorption Trenches (1) Except as provided in Sentence (2), absorption trenches shall be, (a) approximately the same length and not more than 30 m in length, (b) not less than 500 mm and not more than 1 000 mm in width, (c) not less than 600 mm and not more than 900 mm in depth, (d) centred not less than, (i) 1 600 mm apart where used in conjunction with, (A) a distribution pipe, (B) a Type I
leaching chamber, or (C) a Type II leaching chamber constructed in leaching bed fill, or (ii) 2 400 mm apart where used in conjunction with a Type II leaching chamber, other than a Type II leaching chamber
constructed in leaching bed fill, (e) located so that the bottom of the
absorption trench is not less than 900 mm above the
high ground water table, rock or soil with a percolation time
of more than 50 minutes, and (f) backfilled, after the installation of the distribution pipe or leaching chamber with leaching bed fill, so as to ensure that after the leaching bed fill settles, the surface of the leaching bed will not form any depressions. (2) Absorption trenches constructed as a shallow buried trench shall be, (a) approximately the same length and not more than 30 m in length, (b) not less than 300 mm and not more than 600 mm in width, (c) not less than 300 mm and not more than 600 mm in depth, (d) centred not less than 2 000 mm apart, (e) not less than 900 mm at all points on the bottom of the absorption trench above the high ground water table or rock, and (f) backfilled, after the installation of the distribution pipe with leaching bed fill, so as to ensure that after the leaching bed fill settles, the surface of the leaching bed will not form any depressions.
Notes to Table 8.6.2.2.:
8.7.3.3. Distribution Pipe (1) Except for a shallow buried trench, the distribution pipe used in the construction
of a leaching bed shall be, (a) not less than 3 in. trade size for gravity flow systems, (b) installed with a uniform downward slope from the inlet with a drop of not less than 30 mm and not more than 50 mm for each 10 m of distribution pipe for gravity flow systems, and (c) installed within a layer of stone conforming to Sentence (5). (2) Prior to backfilling, the stone layer required by Clause (1)(c) shall be protected in such a manner so as to prevent soil
or leaching bed fill
from entering the stone by completely covering it with, (a) untreated building paper, or (b) a permeable geo-textile fabric. (3) Every pressurized distribution pipe
shall be self-draining so as to prevent freezing of its contents. (4) Every pressurized distribution pipe
shall, (a) be not less than 1 in. trade size, and (b) have orifices of at least 3 mm in diameter, spaced equally along the length of the pipe to provide even distribution of the effluent. (5) The stone layer required by Clause (1)(c) shall, (a) be comprised of washed septic stone, free of fine material, with gradation conforming to Table 8.7.3.3., (b) be not less than 500 mm in width, (c) extend not less than 150 mm below the distribution pipe, and (d) extend not less than 50 mm above the distribution pipe. Table 8.7.3.3.   Gradation of Septic Stone Forming Part of Sentences 8.7.3.3.(5) and 8.7.8.2.(6) Item   Column 1 Particle Size   Column 2 Percent Passing 

  1.   53 mm   100 

  2.   19 mm   0-5 

  3.   75 µm   0-1 (6) This Article does not apply to a distribution pipe within a leaching chamber.
Notes to Table 8.6.2.2.:
8.7.3.4. Leaching Chamber (1) Prior to backfilling, the leaching chamber shall be, (a) installed level over the length of the absorption trench, (b) securely connected together, section to section, (c) free of structural damage, uncut and used full length, (d) equipped with end caps installed on both ends, (e) equipped with an integrated splash plate at the inlet end of each line of leaching chamber, to prevent soil scouring, and (f) protected in such a manner so as to prevent soil or leaching bed fill from entering the leaching chamber. (2) Except for a shallow buried trench, the distribution pipe within a leaching chamber shall be not less than 3 in. trade size for dosed systems. (3) Every pressurized distribution pipe within a leaching chamber shall, (a) extend over the entire length of the leaching chamber, (b) be not less than 1½ in. trade size, (c) have orifices of at least 6 mm in diameter, spaced equally along the length of the pipe to provide even distribution of the effluent, (d) be supported, (e) be self-draining so as to prevent freezing of its contents, and (f) have cleanouts installed at the downstream end of each line of leaching chamber to allow for servicing of the system. 8.7.4. Fill Based Absorption Trenches
Notes to Table 8.6.2.2.:
8.7.4.1. Loading Requirements (1) The area described in Sentence 8.7.4.2.(1) shall be designed such that the loading rate does not exceed, for soil having a percolation time
set out in Column 1 of Table 8.7.4.1., the maximum value set out opposite it in Column 2 of Table 8.7.4.1. Table 8.7.4.1.   Loading Rates for Fill Based Absorption Trenches and Filter Beds Forming Part of Sentences 8.7.4.1.(1) and 8.7.5.2.(2) Item   Column 1 Percolation Time (T) of Soil, min   Column 2 Loading Rates, (L/m2)/day 

  1.   1 < T ≤ 20   10 

  2.   20 < T ≤ 35   8 

  3.   35 < T ≤ 50   6 

  4.   T > 50   4
Notes to Table 8.6.2.2.:
8.7.4.2. Construction Requirements (1) Except for a shallow buried trench, a leaching bed comprised of absorption trenches may be constructed in leaching bed fill, if unsaturated soil
or leaching bed fill complying with Subclause 8.7.2.1.(1)(b)(ii) extends, (a) to a depth of at least 250 mm over the area covered by the leaching bed fill, and (b) for at least 15 m beyond the centrelines of the outer distribution pipes or leaching chambers in any direction in which the effluent entering the soil or
leaching bed fill will move horizontally. (2) If the unsaturated soil or leaching bed fill described in Sentence (1) has a percolation time greater than 15 minutes, any additional leaching bed fill added to it to form the leaching bed shall have a percolation time not less than 75% of the percolation time
of the unsaturated soil or leaching bed fill to which it is added. (3) Leaching bed fill that does not meet the requirements of Sentence (2) may be used to form the leaching bed if, (a) the distance from the bottom of the absorption trench to the underlying soil is not less than 900 mm, or (b) where the distance from the bottom of the absorption trench to the underlying soil is less than 900 mm, the percolation time of the least permeable soil or leaching bed fill within 900 mm from the bottom of the absorption trench is used to calculate the length of the distribution pipe under Article 8.7.3.1 or the leaching chamber under Article 8.7.3.1A.. (4) Sentence (2) does not apply to any leaching bed fill added as backfill above the stone layer in which the distribution pipe is located. (5) All leaching bed fill added shall be stabilized against erosion. (6) The site to which the leaching bed fill
is added shall be generally clear of vegetation. (7) The leaching bed fill that is added shall be compacted in layers in such a manner as to avoid uneven settlement of the distribution pipes or
leaching chambers. (8) Any distribution boxes, header lines, absorption trenches,
distribution pipes or leaching chambers shall be installed only after the leaching bed fill has been compacted in accordance with Sentence (7). (9) Except as provided in Sentence (10), the sides of the added leaching bed fill shall be sloped to ensure stability, but shall not be steeper than one unit vertically to four units horizontally. (10) The side slope of the leaching bed fill
may be increased up to one unit vertically to three units horizontally if measures are taken to prevent erosion and ensure stability of the leaching bed fill. (11) The distances set out in Column 2 of Table 8.2.1.6.B. shall be increased by twice the height that the leaching bed
is raised above the original grade. 8.7.5. Filter Beds
Notes to Table 8.6.2.2.:
8.7.5.1. Application (1) The total daily design sanitary sewage flow shall not exceed, (a) 5 000 L where the treatment unit is a septic tank, or (b) 10 000 L where the treatment unit is a Level II, Level III or Level IV treatment unit as described in Table 8.6.2.2.
Notes to Table 8.6.2.2.:
8.7.5.2. Loading Requirements (1) The effective area of the surface of the filter medium in each filter bed shall be at least 10 m2 and not more than 50 m2. (2) The area described in Sentence 8.7.4.2.(1) shall be designed such that the loading rate does not exceed, for soil having a percolation time
set out in Column 1 of Table 8.7.4.1., the maximum value set out opposite it in Column 2 of Table 8.7.4.1. (3) Except as provided in Sentence (5), where the total daily design sanitary sewage flow does not exceed 3 000 L, the effective area shall be such that the loading on the surface of the filter medium does not exceed 75 L/m2 per day. (4) Except as provided in Sentence (5), where the total daily design sanitary sewage flow exceeds 3 000 L, (a) the effective area shall be such that the loading on the surface of the filter medium does not exceed 50 L/m2
per day, and (b) the leaching bed shall be comprised of more than one filter bed, each of similar size and adjacent to each other. (5) Where a Level II, Level III or Level IV treatment unit as described in Table 8.6.2.2. is used in conjunction with a filter bed, the effective area shall be such that the loading on the surface of the filter medium does not exceed 100 L/m2 per day.
Notes to Table 8.6.2.2.:
8.7.5.3. Construction Requirements (1) Sentences 8.7.4.2.(1), (2) and (4) to (11) apply to the construction of a filter bed. (2) The lines of distribution pipes or leaching chambers shall be evenly spaced over the surface of the filter medium to which the sanitary sewage is applied, with a maximum spacing between the centrelines of the distribution pipes or leaching chambers in accordance with Table 8.7.5.3. Table 8.7.5.3.   Maximum Spacing Between Lines of Distribution Pipes or Leaching Chambers Forming Part of Sentence 8.7.5.3.(2) Item   Column 1 Distribution Method   Column 2 Maximum Centreline Spacing, mm 

  1.   Distribution pipes   1 200 

  2.   Type I leaching chambers   900 

  3.   Type II leaching chambers   1 000 (3) The filter medium shall have a minimum depth of 750 mm below the stone layer or bottom of the leaching chambers and shall be clean sand comprised of particles ranging in size between the limits of, (a) an effective size of 0.25 mm with a uniformity coefficient not less than 3.5, (b) an effective size of 2.5 mm with a uniformity coefficient not greater than 1.5, and (c) having a uniformity coefficient not greater than 4.5. (4) The filter medium shall be unsaturated for its entire depth. (5) Where there is more than one filter bed in a leaching bed, the filter beds shall be separated by at least 5 m between the distribution pipes or leaching chambers of the filter beds. (6) The base of the filter medium shall extend to a thickness of at least 250 mm over an area meeting the requirements of the following formula:  where, A = the area of contact in square metres between the base of the filter medium and the underlying soil, Q = the total daily design sanitary sewage flow in litres, and T = the lesser of 50 and the percolation time of the underlying soil. (7) The stone layer or bottom of the leaching chambers shall be not less than 900 mm above the high ground water table, rock or soil with a percolation time of more than 50 minutes. 8.7.6. Shallow Buried Trench
Notes to Table 8.6.2.2.:
8.7.6.1. Construction Requirements (1) The treatment unit used in conjunction with a leaching bed constructed as a shallow buried trench shall provide an effluent quality that does not exceed the maximum concentrations set out opposite a Level IV treatment unit
in Columns 2 and 3 of Table 8.6.2.2. (2) The effluent shall be distributed through a pressurized distribution system having a pressure head of not less than 600 mm when measured to the most distant point from the pump. (3) The pump chamber shall be sized to provide sufficient storage volume so that the effluent is evenly dosed on an hourly basis over a 24-hour period. (4) A shallow buried trench shall not be constructed unless the soil or
leaching bed fill is sufficiently dry to resist compaction and smearing during excavation. (5) Every chamber or leaching chamber shall be as wide as the shallow buried trench in which it is contained, and the cross-sectional height of the chamber at its centre point shall not be less than half the width of the trench. (6) Every chamber or leaching chambershall contain only one pressurized distribution pipe. 8.7.7. Type A Dispersal Beds
Notes to Table 8.6.2.2.:
8.7.8.1. General Requirements (1) Except as provided in Sentence (2) and Sentence 8.7.8.2.(2), a Type B dispersal bed shall conform to the requirements of Article 8.7.2.1. (2) A
Type B dispersal bed shall not be located in an area that has an average slope that exceeds one unit vertically to seven units horizontally.
Notes to Table 8.6.2.2.:
8.7.8.2. Construction Requirements (1) The treatment unit used in conjunction with a leaching bed constructed
as a Type B dispersal bed shall provide an effluent quality that does not exceed the maximum concentrations set out opposite a Level IV treatment unit
in Columns 2 and 3 of Table 8.6.2.2. (2) A
Type B dispersal bed shall be, (a) rectangular in shape with the long dimension parallel to the site contours, (b) not more than 1 000 mm in depth measured from the bottom of the stone layer to the finished grade when installed in soil with a percolation time
that exceeds 15 min, and (c) backfilled with leaching bed fill so as to ensure that, after the leaching bed fill settles, the surface of the leaching bed will not form any depressions. (3) The bottom of the stone layer shall be at least 600 mm above the high ground water table, rock or soil
with a percolation time greater than 50 min. (4) The effluent shall be distributed over the Type B dispersal bed through a pressurized distribution system having a pressure head of not less than 600 mm when measured to the most distant point from the pump. (5) The distribution pipes shall, (a) be self-draining so as to prevent freezing of their contents, and (b) have orifices of at least 3 mm in diameter, spaced equally along the length of the pipes. (6) The stone layer containing the distribution pipes shall, (a) be comprised of washed septic stone, free of fine material, with gradation conforming to Table 8.7.3.3., (b) extend not less than 250 mm below the distribution pipe, and (c) extend not less than 50 mm above the distribution pipe. (7) The
distribution pipes shall be spaced not more than 1.2 m apart with the outermost pipe spaced not more than 600 mm from the edge of the bed. (8) The pump chamber shall be sized to provide sufficient storage volume so that the effluent is evenly dosed on an hourly basis over a 24-hour period. (9) When there is more than one Type B dispersal bed in a leaching bed, the Type B dispersal beds shall be separated by at least 5 m measured from the edge of the stone layers. (10) A Type B dispersal bed shall not be located closer than the minimum horizontal distances set out in Table 8.2.1.6.B. and these distances shall be increased when required by Sentence 8.7.4.2.(11).
Notes to Table 8.6.2.2.:
8.7.8.3. Design Requirements (1) The area of a Type B dispersal bed shall not be less than the minimum area determined in accordance with Clause (2)(a) or (b). (2) For the purposes of Sentence (1), the minimum area is either of the following, (a) the area calculated based on the loading rates for Type 2 effluent set out in the Column headed “Type 2” found in Table 2-8 of the BCMOH, “Sewerage System Standard Practice Manual”, or (b) the value determined by the formula,  where, A = the area of contact in square metres between the stone layer and the underlying soil, Q = the total daily design sanitary sewage flow in litres, and T = the percolation time of the underlying soil. (3) The linear loading rates of the underlying soil shall not be greater than, (a) the linear loading rates set out in Table 2-11 of BCMOH, “Sewerage System Standard Practice Manual”, where the area of the Type B dispersal bed
is determined in accordance with Clause (2)(a), or (b) the following linear loading rate, where the area of the Type B dispersal bed is determined in accordance with Clause (2)(b), (i) 40 L/m, for soil having a percolation time
equal to or greater than 24 min, or (ii) 50 L/m, for soil having a percolation time less than 24 min. (4) The width of a Type B dispersal bed
shall not exceed 4 m. Section 8.8. Class 5 Sewage Systems 8.8.1. Application
Notes to Table 8.6.2.2.:
8.8.1.1. Prohibited Installation (1) Except as provided in Article 8.8.1.2., a Class 5 sewage system shall not be installed.
Notes to Table 8.6.2.2.:
8.8.1.2. Acceptable Installation (1) A Class 5 sewage system may be installed in the following circumstances: (a) where the proposed use of the sewage system is for a temporary operation, excluding seasonal recreational use, not exceeding 12 months in duration, (b) to remedy an unsafe sewage system where the remediation of the unsafe condition by the installation of a Class 4 sewage system
is impracticable, (c) to upgrade a
sewage system serving an existing building, where upgrading through the use of a Class 4 sewage system
is not possible due to lot size, site slope or clearance limitations, or (d) as an interim measure for a lot or parcel of land until municipal sewers are available, provided that the municipality undertakes to ensure the continued operation of an approved hauled sewage system until the municipal sewers are available. (2) Where a Class 5 sewage system is installed, a written agreement for the disposal of sanitary sewage from the sewage system shall be entered into with a hauled sewage system operator. 8.8.2. General Requirements
Notes to Table 8.6.2.2.:
8.8.2.1. Construction Requirements (1) All Class 5 sewage systems shall be equipped with a device that shall produce an audible and visual warning alarm so located to warn that the sewage system is nearing capacity. (2) The device required in Sentence (1) shall be designed to provide suitable advance warning to the building occupants considering, (a) the total daily design sanitary sewage flow, (b) the location of the Class 5 sewage system, and (c) the response time of the hauled sewage system contractor. (3) Except as provided in Sentence (4), all holding tanks shall be provided with a vent that, (a) is not less than 3 in. trade size, (b) terminates at least, (i) 300 mm above finished grade with a vent cap, or (ii) 600 mm above finished grade with a vent cap when the holding tank
is located in an area subject to flooding, and (c) terminates at least 3.5 m away from any air inlet, window, or door. (4) A vent from a holding tank may connect into the venting system of the building served by the holding tank
provided that, (a) the vent is not less than 3 in. trade size, and (b) the installation of the vent shall conform to the requirements in Part 7.
Notes to Table 8.6.2.2.:
8.8.2.2. Sizing of Holding Tanks (1) All holding tanks used in residential dwellings shall have a minimum 7 day holding capacity based on the total daily design sanitary sewage flow. Section 8.9. Operation and Maintenance 8.9.1. General
Notes to Table 8.6.2.2.:
8.9.1.1. Scope (1) This Section applies to the operation and maintenance of all sewage systems.
Notes to Table 8.6.2.2.:
8.9.1.2. General Requirements for Operation and Maintenance (1) Every sewage system shall be operated and maintained so that, (a) the sewage system or any part of it shall not emit, discharge or deposit sanitary sewage or effluent
onto the surface of the ground, (b)  sanitary sewage or effluent shall not emit, discharge, seep, leak or otherwise escape from the sewage system
or any part of it other than from a place or part of the sewage system where the system is designed or intended to discharge the sanitary sewage or effluent, and (c) except as provided in Sentence (2), sanitary sewage or effluent
shall not emit, discharge, seep, leak or otherwise escape from the sewage system or any part of it into a piped water supply, well water supply, a watercourse, ground water
or surface water. (2) Clause (1)(c) does not apply to the use of a sewage system designed and operated such that properly treated effluent is discharged into soil. 8.9.2. Operation
Notes to Table 8.6.2.2.:
8.9.2.1. Scope (1) The requirements of this Subsection are in addition to the requirements of Subsection 8.9.1.
Notes to Table 8.6.2.2.:
8.9.2.2. General (1) Every sewage system shall be operated in accordance with, (a) the basis on which the construction and use of the sewage system was approved or required under the Act or predecessor legislation, as the case may be, and (b) the requirements of the manufacturer of the sewage system.
Notes to Table 8.6.2.2.:
8.9.2.3. Class 4 Sewage Systems (1) Every Class 4 sewage system shall be operated in accordance with the literature required by Sentence 8.6.2.2.(6). (2) No person shall operate a treatment unit other than a septic tank unless the person has entered into an agreement whereby servicing and maintenance of the treatment unit and its related components will be carried out by a person who, (a) possesses a copy of the literature required by Sentence 8.6.2.2.(6), and (b) is authorized by the manufacturer to service and maintain that type of treatment unit. (3) The person authorized by the manufacturer to service and maintain the treatment unit and who has entered into the agreement referred to in Sentence (2) with the person operating the treatment unit shall notify the chief building official if, (a) the agreement is terminated, or (b) access for service and maintenance of the treatment unit is denied by the person operating the treatment unit.
Notes to Table 8.6.2.2.:
8.9.2.4. Sampling of Treatment Units (1) Every person operating a treatment unit that is used in conjunction with a leaching bed constructed as a shallow buried trench, Type A dispersal bed or Type B dispersal bed shall, (a) take a grab sample of the effluent to determine the level of CBOD5 and suspended solids in the effluent, (b) carry out the sampling required by Clause (1)(a) in accordance with the methods described in the APHA/AWWA/WEF, “Standard Methods for the Examination of Water and Wastewater”, and (c) promptly submit the results of the sampling required by Clause (a) to the chief building official. (2) Except as provided in Sentence (4), the sampling required by Sentence (1) shall be conducted, (a) initially, once during the first 12 months after the sewage system was put into use, and (b) thereafter, once during every 12 month period, at least 10 months and not more than 18 months after the previous sampling has been completed. (3) The concentration of CBOD5 and suspended solids in the grab sample described in Sentences (1) and (4) is deemed to comply with the maximum concentration requirements set out in Table 8.6.2.2. when it does not exceed 20 mg/L for each of these parameters. (4) If the results of the sampling required by Sentence (1) do not comply with Sentence (3), the person operating the treatment unit
shall, (a) resample the effluent
in accordance with Clauses (1)(a) and (b) within 6 months after the previous sampling has been completed, and (b) promptly submit the results of the resampling required by Clause (a) to the chief building official.
Notes to Table 8.6.2.2.:
8.9.2.5. Class 5 Sewage Systems (1) Every Class 5 sewage system shall be operated in accordance with the agreement referred to in Sentence 8.8.1.2.(2). (2) No Class 5 sewage system shall be operated once it is filled with sanitary sewage until such time as the sanitary sewage is removed from the sewage system. 8.9.3. Maintenance
Notes to Table 8.6.2.2.:
8.9.3.1. Scope (1) The requirements of this Subsection are in addition to the requirements of Subsection 8.9.1.
Notes to Table 8.6.2.2.:
8.9.3.2. General (1) Every sewage system shall be maintained so that, (a) the construction
of the sewage system remains in accordance with, (i) the basis on which the construction and use of the sewage system was approved or required under the Act or predecessor legislation, as the case may be, and (ii) the requirements of the manufacturer of the sewage system, and (b) all components of the sewage system function in their intended manner. (2) The land in the vicinity of a sewage system
shall be maintained in a condition that will not cause damage to, or impair the functioning of, the sewage system.
Notes to Table 8.6.2.2.:
8.9.3.3. Interceptors (1) Every grease interceptor referred to in Article 8.1.3.1. shall be maintained in accordance with CSA B481.4, “Maintenance of Grease Interceptors”.
Notes to Table 8.6.2.2.:
8.9.3.4. Class 4 Sewage Systems (1) Septic tanks and other treatment units shall be cleaned whenever sludge and scum occupy one-third of the working capacity of the tank.
Notes to Table 8.6.2.2.:
9.1.1.1. Scope (1) The scope of this Part shall be as described in Subsection 1.1.2. of Division A.
Notes to Table 8.6.2.2.:
9.1.1.2. Signs (1) Signs shall conform to the requirements in Section 3.15.
Notes to Table 8.6.2.2.:
9.1.1.3. Self-Service Storage Buildings (1) Self-service storage buildings shall conform to the requirements in Section 3.10.
Notes to Table 8.6.2.2.:
9.1.1.4. Tents and Air-Supported Structures (1) Tents shall conform to the requirements in Subsection 3.14.1. (2) Air-supported structures shall conform to the requirements in Subsection 3.14.2.
Notes to Table 8.6.2.2.:
9.1.1.5. Proximity to Existing above Ground Electrical Conductors (1) Where a building is constructed in close proximity to existing above ground electrical conductors, the requirements of Subsection 3.1.19. shall apply.
Notes to Table 8.6.2.2.:
9.1.1.6. Food Premises (1) The requirements of Subsection 3.7.6. apply to all food premises.
Notes to Table 8.6.2.2.:
9.1.1.7. Radon (1) In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m3
of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working levels inside the building
for, (a) the City of Elliot Lake in the Territorial District of Algoma, (b) the Township of Faraday in the County of Hastings, and (c) the geographic Township of Hyman in the Territorial District of Sudbury.
Notes to Table 8.6.2.2.:
9.1.1.8. Building in Flood Plains (1) Buildings constructed on flood plains shall, (a) be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and (b) incorporate floodproofing measures that will preserve the integrity of exits and means of egress during times of flooding.
Notes to Table 8.6.2.2.:
9.1.1.9. Site Assembled and Factory-Built Buildings (1) Except as provided in Sentence (2), a manufactured building or manufactured part of a building
is deemed to comply with this Code if it is designed and constructed in compliance with, (a) CSA Z240.2.1, “Structural Requirements for Manufactured Homes”, if the building is constructed in sections not wider than 4.88 m, or (b) CSA A277, “Procedure for Certification of Prefabricated Buildings, Modules, and Panels”. (2) The requirements of this Code shall apply to, (a)  building components designed and constructed outside the place of manufacture, and (b) site installation of such buildings.
Notes to Table 8.6.2.2.:
9.1.1.10. Public Pools and Public Spas (1) Public pools shall conform to the requirements of Section 3.11. and public spas shall conform to the requirements of Section 3.12.
Notes to Table 8.6.2.2.:
9.1.1.11. Shelf and Rack Storage Systems (1) Shelf and rack storage systems shall conform to the requirements of Section 3.16.
Notes to Table 8.6.2.2.:
9.1.1.12. Houses (1) A
house is permitted above another house provided there is not more than one dwelling unit in each house. Section 9.2. Reserved Section 9.3. Materials, Systems and Equipment 9.3.1. Concrete
Notes to Table 8.6.2.2.:
9.3.1.1. General (1) Except as provided in Sentence (2) and Articles 9.3.1.6. and 9.3.1.7., unreinforced and nominally reinforced concrete shall be designed, mixed, placed, cured and tested in accordance with the requirements for “R” class concrete stated in Section 9 of CSA A23.1, “Concrete Materials and Methods of Concrete Construction”. (2) Unreinforced and nominally reinforced site-batched concrete shall be designed, mixed, placed and cured in accordance with Articles 9.3.1.2. to 9.3.1.9. (3) Except as provided in Sentence (4), Subsection 9.15.4. and Section 9.39., reinforced concrete shall be designed to conform to the requirements of Part 4. (4) For flat insulating concrete form walls described in Clause 9.15.1.1.(1)(c) or 9.20.1.1.(1)(b), the concrete and reinforcing shall comply with Part 4 or, (a) the concrete shall conform to CSA A23.1, “Concrete Materials and Methods of Concrete Construction”, with a maximum aggregate size of 19 mm, and (b) the reinforcing shall, (i) conform to CSA G30.18, “Carbon Steel Bars for Concrete Reinforcement”, (ii) have a minimum specified yield strength of 400 MPa, and (iii) be lapped a minimum of 450 mm for 10M bars and 650 mm for 15M bars.
Notes to Table 8.6.2.2.:
9.3.1.2. Cement (1) Cement shall meet the requirements of CSA A3001, “Cementitious Materials for Use in Concrete”.
Notes to Table 8.6.2.2.:
9.3.1.3. Concrete in Contact with Sulfate Soil (1) Concrete in contact with sulfate soil, which is deleterious to normal cement, shall conform to the requirements in Clause 4.1.1.6. of CSA A23.1, “Concrete Materials and Methods of Concrete Construction”.
Notes to Table 8.6.2.2.:
9.3.1.4. Aggregates (1) Aggregates shall, (a) consist of sand, gravel, crushed rock, crushed air-cooled blast furnace slag, expanded shale or expanded clay conforming to CSA A23.1, “Concrete Materials and Methods of Concrete Construction”, and (b) be clean, well-graded and free of injurious amounts of organic and other deleterious material.
Notes to Table 8.6.2.2.:
9.3.1.5. Water (1) Water shall be clean and free of injurious amounts of oil, organic matter, sediment or any other deleterious material.
Notes to Table 8.6.2.2.:
9.3.1.6. Compressive Strength (1) Except as provided elsewhere in this Part, the compressive strength of unreinforced concrete after 28 days shall be not less than, (a) 32 MPa for garage floors, carport floors and all exterior flatwork, (b) 20 MPa for interior floors other than those for garages and carports, and (c) 15 MPa for all other applications. (2) Site-batched concrete used for garage floors, carport floors and exterior flatwork shall have air entrainment of 5 to 8%.
Notes to Table 8.6.2.2.:
9.3.1.7. Concrete Mixes (1) For pre-mixed concrete and for the site-batched concrete mixes described in Table 9.3.1.7., the maximum ratio of water to cementing materials measured by weight shall not exceed, (a) 0.45 for garage floors, carport floors and all exterior flatwork, (b) 0.65 for interior floors other than those for garages and carports, and (c) 0.70 for all other applications. (2) The size of aggregate in unreinforced site-batched concrete mixes referred to in Sentence (1) shall not exceed, (a) 1/5 the distance between the sides of vertical forms, or (b) 1/3 the thickness of flatwork. Table 9.3.1.7.   Site-Batched Concrete Mixes Forming Part of Sentence 9.3.1.7.(1) Item   Column 1   Column 2   Column 3   Column 4   Column 5   Column 6   Column 7 

      Maximum Size of Coarse Aggregate, mm   Materials, volume                 

      Cement       Fine Aggregate (damp average coarse sand)   Coarse Aggregate (gravel or crushed stone) 

          Parts   L(1)   Parts   L   Parts   L 

  1.   14   1   28   1.75   49   2   56 

  2.   20   1   28   1.75   49   2.5   70 

  3.   28   1   28   2   56   3   84 

  4.   40   1   28   2   56   3.5   98
Notes to Table 9.3.1.7.:
9.3.1.8. Admixtures (1) Admixtures shall conform to ASTM C260 / C260M, “Air-Entraining Admixtures for Concrete”, or ASTM C494 / C494M, “Chemical Admixtures for Concrete”, as applicable.
Notes to Table 9.3.1.7.:
9.3.1.9. Cold Weather Requirements (1) When the air temperature is below 5°C , concrete shall be, (a) kept at a temperature of not less than 10°C or more than 25°C while being mixed and placed, and (b) maintained at a temperature of not less than 10°C for 72 h after placing. (2) No frozen material or ice shall be used in concrete described in Sentence (1). 9.3.2. Lumber and Wood Products
Notes to Table 9.3.1.7.:
9.3.2.1. Grade Marking (1) Lumber for joists, rafters, trusses and beams and for the uses listed in Table 9.3.2.1. shall be identified by a grade stamp to indicate its grade as determined by the NLGA, “Standard Grading Rules for Canadian Lumber”. Table 9.3.2.1.   Minimum Lumber Grades for Specific End Uses Forming Part of Sentences 9.3.2.1.(1) and 9.3.2.2.(1) Item   Column 1   Column 2   Column 3   Column 4   Column 5 

      Use   Boards           Framing 

          Paragraph in the NLGA Grading Rules Under Which Boards are Graded     

          All Species       Eastern White Pine & Red Pine   All Species 

          Para 113   Para 114   Para 118     

  1.   Stud wall framing (loadbearing members)   —   —   —   Stud, Standard, No. 2 

  2.   Stud wall framing (non-loadbearing members)   —   —   —   Stud, Utility, No. 3 

  3.   Plank frame construction (loadbearing members)   No. 3 Common   —   No. 3 Common   No. 2 

  4.   Plank frame construction (non-loadbearing members)   No. 5 Common   —   No. 5 Common   Economy, No. 3 

  5.   Post and beams less than 114 mm in thickness   —   —   —   Standard, No.2 

  6.   Post and beams not less than 114 mm in thickness   —   —   —   Standard 

  7.   Roof sheathing   No. 3 Common   Standard   No. 4 Common   — 

  8.   Subflooring   No. 3 common   Standard   No. 3 Common   — 

  9.   Wall sheathing when required as a nailing base   No. 4 Common   Utility   No. 4 Common   — 

  10.   Wall sheathing not required as a nailing base   No. 5 Common   Economy   No. 5 Common   —
Notes to Table 9.3.1.7.:
9.3.2.2. Lumber Grades (1) Except for joists, rafters, trusses and beams, visually graded lumber shall conform to the grades in Table 9.3.2.1.
Notes to Table 9.3.1.7.:
9.3.2.3. Machine Stress Rated Lumber (1) Machine stress rated lumber shall conform to the requirements of Subsection 4.3.1.
Notes to Table 9.3.1.7.:
9.3.2.4. OSB, Waferboard and Plywood Marking (1) OSB, waferboard and plywood used for roof sheathing, wall sheathing and subflooring shall be legibly identified on the face of the material indicating, (a) the manufacturer of the material, (b) the standard to which it is produced, and (c) that the material is of an exterior type.
Notes to Table 9.3.1.7.:
9.3.2.5. Moisture Content (1) Moisture content of lumber shall be not more than 19% at the time of installation.
Notes to Table 9.3.1.7.:
9.3.2.6. Lumber Dimensions (1) Lumber dimensions referred to in this Part are actual dimensions determined in conformance with CSA O141, “Softwood Lumber”.
Notes to Table 9.3.1.7.:
9.3.2.7. Panel Thickness Tolerances (1) The thickness specified in this Part for plywood, hardboard, particleboard, OSB and waferboard shall be subject to the tolerances permitted in the standards referenced for these products unless specifically indicated in this Part.
Notes to Table 9.3.1.7.:
9.3.2.8. Undersized Lumber (1) Joist, rafter, lintel and beam members up to 5% less than the actual Canadian standard sizes are permitted to be used provided the allowable spans for the grade and species of lumber under consideration are reduced 5% from those shown in the span tables for full size members.
Notes to Table 9.3.1.7.:
9.3.3.1. Sheet Metal Thickness (1) Minimum thicknesses for sheet metal material required in this Part refer to the actual minimum base metal thicknesses measured at any point of the material, and in the case of galvanized steel described in Sentence 9.3.3.2.(1), include the thickness of the galvanizing coating unless otherwise indicated.
Notes to Table 9.3.1.7.:
9.3.3.2. Galvanized Sheet Steel (1) Where sheet steel is required to be galvanized, it shall be metallic-coated with zinc or an alloy of 55% aluminium-zinc meeting the requirements of, (a) ASTM A653 / A653M, “Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process”, or (b) ASTM A792 / A792M, “Sheet Steel, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process”. (2) Where galvanized sheet steel is intended for use in locations exposed to the weather or as a flashing material, it shall have a zinc coating not less than the G90 (Z275) coating designation or an aluminum-zinc alloy coating not less than the AZM150 coating designation, as referred to in Sentence (1). Section 9.4. Structural Requirements 9.4.1. Structural Design Requirements and Application Limitations