12. (0.1) Every person constructing a well shall comply with the requirements set out in this section.  O. Reg. 372/07, s. 11 (1). (1) The site of a new well shall be separated, (a) from an earth pit privy, privy vault, pail privy, greywater system or cesspool, as defined in Ontario Regulation 332/12 (Building Code) made under the Building Code Act, 1992, by at least the applicable clearance distance set out in Table 8.2.1.5. of that regulation; and (b) from a treatment unit, distribution pipe or holding tank, as defined in Ontario Regulation 332/12, by at least the applicable clearance distance set out in Table 8.2.1.6.A., 8.2.1.6.B. or 8.2.1.6.C. of that regulation.  O. Reg. 372/07, s. 11 (2); O. Reg. 331/13, s. 1. (1.1) The references in subsection (1) to earth pit privies, privy vaults, pail privies, greywater systems, cesspools, treatment units, distribution pipes and holding tanks include references to earth pit privies, privy vaults, pail privies, greywater systems, cesspools, treatment units, distribution pipes and holding tanks that have not been constructed but for which a building permit has been issued.  O. Reg. 372/07, s. 11 (2). (2) The site of a new drilled well that has a casing that extends to a depth of more than six metres below ground level shall be at least 15 metres from a source of contaminants other than one mentioned in subsection (1).  O. Reg. 372/07, s. 11 (3). (3) The site of, (a) a new drilled well that does not have a casing that extends to a depth of more than six metres below ground level; or (b) a new well that is not a drilled well, shall be at least 30 metres from a source of contaminants other than one mentioned in subsection (1).  O. Reg. 128/03, s. 15; O. Reg. 372/07, s. 11 (4, 5). (4) The site of a new well shall be chosen so that the well is accessible for cleaning, treatment, repair, testing, inspection and visual examination at all times before, during and after completion of construction of the well.  O. Reg. 128/03, s. 15. (5) The site of a new well shall be at an elevation higher than the immediately surrounding area.  O. Reg. 128/03, s. 15. (6) Subsections (1) to (5) do not apply to a test hole or dewatering well.  O. Reg. 128/03, s. 15. (7) A new well shall not be constructed with a well pit, and a well pit shall not be added to an existing well, at any location.  O. Reg. 372/07, s. 11 (6). (7.1) Subsection (7) does not apply in respect of a test hole or dewatering well.  O. Reg. 372/07, s. 11 (6). (8) Despite subsection (7), (a) a new well may be constructed with a well pit if the well is created by diamond drilling equipment in connection with mineral exploration; and (b) a well pit may be added to an existing well, if the existing well was created by diamond drilling equipment in connection with mineral exploration.  O. Reg. 372/07, s. 11 (7). (9) If a well pit is permitted pursuant to subsection (7.1) or (8), the following requirements apply to the well pit: 1. Section 13 applies as if the well pit were a well. 2. The floor of the well pit shall be covered with a layer of suitable sealant at least 10 centimetres thick that, when set to a solid state, will be capable of supporting the weight of a person. 3. The top of the well pit shall be covered with a solid, watertight cover, sufficient to prevent the entry of surface water and other foreign materials into the well pit. 4. The cover on the well pit shall be fastened in place in a manner that will make it difficult for children to remove the cover. 5. The well pit shall be kept dry by means of a sump pump. 6. Despite paragraph 5, if the water table is substantially lower than the floor of the well pit, the well pit may be kept dry by means of drainage through a one-way valve that passes through the layer of sealant and that is located near the perimeter of the well pit. 7. The top of the casing of the drilled well shall be at least 40 centimetres above the floor of the well pit. 8. The top of the casing of the drilled well shall be sealed with a commercially manufactured sanitary seal and shall be provided with a length of air vent line sufficient to extend above the covering of the well pit.  O. Reg. 128/03, s. 15; O. Reg. 372/07, s. 11 (8, 9). (10) Paragraphs 4 to 8 of subsection (9) do not apply to a test hole or dewatering well described in subsection 13 (11).  O. Reg. 372/07, s. 11 (10). Log and Field Notes