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Geothermal Rules <br />Effective Date: September 30, 2004 <br />4.2.10 "Designated Agent" when used herein shall mean the representative of <br />an owner of a geothermal well who has been authorized in writing by the owner to act in <br />his behalf. <br />4.2.11 "Discharge" means the disposal of geothermal fluids after use by a <br />geothermal well owner or operator. <br />4.2.12 "Field or Geothermal Field" means the general area that is, or appears <br />to be, underlain by a geothermal resource, including hot dry rock. The terms "field" and <br />"reservoir" have the same meaning if only one reservoir is involved; however, "field", <br />unlike "reservoir", may relate to two or more reservoirs. <br />4.2.13 "Flow Test" means the testing of a geothermal well to determine the <br />geologic and hydrologic parameters of the reservoir, the physical and chemical <br />properties of the geothermal fluids, or the production or reinjection rates for a well. <br />4.2.14 "Geoexchange System" means a heat pump or heat exchange system <br />having a horizontal or vertical closed -loop portion consisting of pipe buried in trenches, <br />boreholes, or wells (ground -source), or submerged in a body of water (water -source), in <br />which a heat exchange medium (fluid or vapor) is circulated and fully contained within <br />the pipe or tubing. The purpose of the closed loop is to provide for the transfer of heat <br />between the circulating fluid or vapor and the ground or water. <br />4.2.15 "Geothermal Well" means a well that is constructed for the purpose of <br />exploration, use of a geothermal resource, or reinjection of a geothermal fluid. The term <br />"Geothermal Well" does include loop fields, but does not include a well subject to the <br />provisions of Articles 90 and 92 of Title 37, C.R.S. (2003), wells subject to the <br />jurisdiction of the Oil and Gas Conservation Commission pursuant to Article 60 of Title <br />34, C.R.S. (2003), or wells subject to the jurisdiction of the Mined Land Reclamation <br />Board pursuant to Articles 32 and 33 of Title 34, C.R.S. (2003). <br />4.2.16 "Grout" means any material approved by these Rules that is used to form <br />a permanent impermeable seal in the annulus between the closed loop or casing and the <br />borehole wall, between two strings of casing, or that is used in plugging, boreholes, loops <br />or wells. <br />4.2.17 "Grouting" means the process by which grout is placed in the borehole or <br />casing. <br />4.2.18 "Loop Field" means any excavation or borehole constructed for the <br />installation of piping to contain a fluid or vapor for circulation in the operation of a <br />closed -loop geoexchange system. <br />11 <br />