1. (1) In this Regulation, “air vent” means an outlet at the upper end of the casing that allows for equalization of air pressure between the inside of the casing and the atmosphere and for the release of gases from the well; (“évent”) “annular space” means an open space between a casing or well screen and the side of a well, and includes space between overlapping casings within the well; (“espace annulaire”) “ANSI” means the American National Standards Institute; (“ANSI”) “API” means the American Petroleum Institute; (“API”) “aquifer” means a water-bearing formation that is capable of transmitting water in sufficient quantities to serve as a source of water supply; (“formation aquifère”) “assistant well technician” means a person who works at the construction of wells as an employee or agent of the holder of a well contractor licence under the supervision of the holder of a well technician licence; (“aide-technicien en construction de puits”) “ASTM” means ASTM International; (“ASTM”) “authorizing certificate” has the same meaning as in subsection 2 (1) of the Ontario Labour Mobility Act, 2009; (“certificat d’autorisation”) “AWWA” means the American Water Works Association; (“AWWA”) “bedrock” means, (a) the solid rock underlying unconsolidated material such as gravel, sand, silt and clay, or (b) solid rock at the ground surface; (“roche-mère”) “bentonite” means a commercially produced sealing material to be used in well construction or abandonment that, (a) consists of more than 50 per cent sodium montmorillonite by weight, (b) has the ability to swell in the presence of water, (c) does not provide nutrients for bacteria, and (d) does not impair the quality of water with which it comes in contact; (“bentonite”) “CAN” means National Standard of Canada; (“CAN”) “casing” means pipe, tubing or other material installed in a well to support its sides, but does not include a well screen; (“tubage”) “chlorinated” means disinfected with free chlorine residual; (“chloré”) “dewatering well” means a well that is not used or intended for use as a source of water for agriculture or human consumption and that is made, (a) to lower or control the level of ground water in the area of the well, or (b) to remove materials that may be in the ground water; (“puits d’exhaure”) “flowing well” means a well that has a static water level above the ground surface; (“puits jaillissant”) “mineralized water” means water containing in excess of 6,000 milligrams per litre total dissolved solids or 500 milligrams per litre chlorides or 500 milligrams per litre sulphates; (“eau minéralisée”) “minor alteration” means, with respect to a well, (a) routine repair or maintenance, (b) the installation of monitoring, sampling or testing equipment, other than equipment used to test the yield of the well or the aquifer, (c) the installation of a pump in a test hole, or (d) the installation of a well cap or watertight well cover; (“modification mineure”) “NSF” means NSF International; (“NSF”) “occupation” has the same meaning as in subsection 2 (1) of the Ontario Labour Mobility Act, 2009; (“métier ou profession”) “out-of-province regulatory authority” has the same meaning as in subsection 2 (1) of the Ontario Labour Mobility Act, 2009; (“autorité de réglementation extraprovinciale”) “overburden” means unconsolidated material overlying bedrock; (“couverture”) “pump” includes associated pumping equipment; (“pompe”) “regulated occupation” has the same meaning as in subsection 2 (1) of the Ontario Labour Mobility Act, 2009; (“métier ou profession réglementé”) “sealant” means, (a) a slurry consisting of clean water and at least 20 per cent bentonite solids by weight, or (b) other material that is equivalent to a slurry described in clause (a) with respect to the ability to form a permanent watertight barrier; (“matériau d’étanchéité”) “static water level” means the level attained by water at equilibrium in a well when no water is being taken from the well; (“niveau hydrostatique”) “subsurface formation” includes an aquifer; (“formation souterraine”) “suitable sealant” means a sealant that is compatible with the quality of the water found in the well; (“matériau d’étanchéité approprié”) “test hole” means a well that, (a) is made to test or to obtain information in respect of ground water or an aquifer, and (b) is not used or intended for use as a source of water for agriculture or human consumption; (“trou d’essai”) “tremie pipe” means a pipe or tube with an inner diameter that is at least three times the diameter of the largest particle of material to pass through it and that is used to conduct material to the bottom of a hole, including a hole containing standing water; (“tuyau à trémie”) “well cluster” means a group of wells for which the person constructing the wells may complete one well record under subsection 16.4 (1); (“groupe de puits”) “well owner” means the owner of land upon which a well is situated and includes a tenant or lessee of the land and a well purchaser; (“propriétaire de puits”) “well purchaser” means a person who enters into a contract for the construction of a well with a person who is engaged in the business of constructing wells; (“acheteur de puits”) “well record” means a form supplied by the Ministry for recording information about a well during construction or abandonment of the well; (“registre de puits”) “well screen” means perforated pipe or tubing, unsealed concrete tiles or other material installed in a well to filter out particulate matter and form the water intake zone. (“filtre de puits”)  R.R.O. 1990, Reg. 903, s. 1; O. Reg. 128/03, s. 1; O. Reg. 372/07, s. 1 (1-8); O. Reg. 468/10, s. 1; O. Reg. 461/19, s. 1. (2) For the purposes of this Regulation, (a) a person is a person constructing a well if the person is a well technician or other individual who works at the construction of the well; and (b) a well purchaser is not a person constructing a well.  O. Reg. 372/07, s. 1 (9). (3) For the purposes of this Regulation, a well’s structural stage is complete on the day on which the well is capable of being used for the purpose for which it was constructed but for, (a) compliance with section 15; (b) the installation of a pump; or (c) any alterations necessary to accommodate pumping, monitoring, sampling, testing or water treatment equipment.  O. Reg. 372/07, s. 1 (9). Exemptions