State Codes and Statutes

Statutes > Montana > 85 > 85_2 > 85_2_3 > 85-2-361


     85-2-361. Hydrogeologic assessment -- definition -- minimum requirements. (1) (a) For the purposes of 85-2-360 through 85-2-362, "hydrogeologic assessment" means a report for the project for or through which water will be put to beneficial use, the point of diversion, and the place of use that describes the geology, hydrogeologic environment, water quality with regard to the provisions of 75-5-410 and 85-2-364, and predicted net depletion, if any, including the timing of any net depletion, for surface water within the area described in subsection (2)(a)(i) within the closed basins that are subject to an appropriation right, including but not limited to rivers, streams, irrigation canals, or drains that might be affected by the new appropriation right and any predicted water quality changes that may result.
     (b) In predicting net depletion of surface water from a proposed use, consideration must be given, at a minimum, to:
     (i) the actual amount diverted for like beneficial uses;
     (ii) any amounts that will likely be lost in conveyance, if any, and whether any lost amounts are lost to the system through evaporation or other means or whether those amounts are returned to the system through percolation or other means; and
     (iii) any return flows from the proposed use, including but not limited to any treated wastewater return flows if the treated wastewater that is considered effluent meets the requirements of 75-5-410 and 85-2-364.
     (2) (a) A hydrogeologic assessment that will be used to predict net depletion of surface water resulting from a new appropriation right must include hydrogeologic data or a model developed by a hydrogeologist, a qualified scientist, or a qualified licensed professional engineer that incorporates for the new appropriation:
     (i) the area or estimated area of ground water that will be affected, not to exceed the boundaries of the drainage subdivisions established by the office of water data coordination, United States geological survey, and used by the water court, unless the applicant chooses to expand the boundaries;
     (ii) the geology in the area identified in subsection (2)(a)(i), including stratigraphy and structure;
     (iii) the parameters of the aquifer system within the area identified in subsection (2)(a)(i) to include, at a minimum, estimates for:
     (A) the lateral and vertical extent of the aquifer;
     (B) whether the aquifer is confined or unconfined;
     (C) the effective hydraulic conductivity of the aquifer;
     (D) transmissivity and storage coefficient related to the aquifer; and
     (E) the estimated flow direction or directions of ground water and the rate of movement;
     (iv) the locations of surface waters within the area described in subsection (2)(a)(i) that are subject to an appropriation right, including but not limited to springs, creeks, streams, or rivers that may or may not show a net depletion;
     (v) evidence of water availability; and
     (vi) the locations of all wells or other sources of ground water of record within the area identified in subsection (2)(a)(i).
     (b) A hydrogeologic assessment must also include a water quality report that includes:
     (i) the location of existing documented hazards that could be affected or exacerbated by the appropriation right, such as areas of subsidence, along with a plan to mitigate any conditions or impacts;
     (ii) other water quality information necessary to comply with 75-5-410 and 85-2-364; and
     (iii) a description of any water treatment method that will be used at the time of any type of injection or introduction of water to the aquifer to ensure compliance with 75-5-410 and 85-2-364 and the water quality laws under Title 75, chapter 5.
     (3) The hydrogeologic assessment must include an analysis of whether the information required by subsection (2) predicts that there may be a net depletion of surface water in the area described in subsection (2)(a)(i) and the extent of the depletion, if any.
     (4) The hydrogeologic assessment, the model if provided, the test well data, the monitoring well data, and other related information must be submitted to the department. The department shall submit this information to the bureau of mines and geology. The bureau of mines and geology shall ensure that information submitted pursuant to this section is entered into the ground water information center database as part of the ground water assessment program.
     (5) An entity that has previously conducted some type of hydrogeologic assessment may submit the information from that assessment as the hydrogeologic assessment required by this section if the information meets the criteria and requirements of this section.

     History: En. Sec. 15, Ch. 391, L. 2007.

State Codes and Statutes

Statutes > Montana > 85 > 85_2 > 85_2_3 > 85-2-361


     85-2-361. Hydrogeologic assessment -- definition -- minimum requirements. (1) (a) For the purposes of 85-2-360 through 85-2-362, "hydrogeologic assessment" means a report for the project for or through which water will be put to beneficial use, the point of diversion, and the place of use that describes the geology, hydrogeologic environment, water quality with regard to the provisions of 75-5-410 and 85-2-364, and predicted net depletion, if any, including the timing of any net depletion, for surface water within the area described in subsection (2)(a)(i) within the closed basins that are subject to an appropriation right, including but not limited to rivers, streams, irrigation canals, or drains that might be affected by the new appropriation right and any predicted water quality changes that may result.
     (b) In predicting net depletion of surface water from a proposed use, consideration must be given, at a minimum, to:
     (i) the actual amount diverted for like beneficial uses;
     (ii) any amounts that will likely be lost in conveyance, if any, and whether any lost amounts are lost to the system through evaporation or other means or whether those amounts are returned to the system through percolation or other means; and
     (iii) any return flows from the proposed use, including but not limited to any treated wastewater return flows if the treated wastewater that is considered effluent meets the requirements of 75-5-410 and 85-2-364.
     (2) (a) A hydrogeologic assessment that will be used to predict net depletion of surface water resulting from a new appropriation right must include hydrogeologic data or a model developed by a hydrogeologist, a qualified scientist, or a qualified licensed professional engineer that incorporates for the new appropriation:
     (i) the area or estimated area of ground water that will be affected, not to exceed the boundaries of the drainage subdivisions established by the office of water data coordination, United States geological survey, and used by the water court, unless the applicant chooses to expand the boundaries;
     (ii) the geology in the area identified in subsection (2)(a)(i), including stratigraphy and structure;
     (iii) the parameters of the aquifer system within the area identified in subsection (2)(a)(i) to include, at a minimum, estimates for:
     (A) the lateral and vertical extent of the aquifer;
     (B) whether the aquifer is confined or unconfined;
     (C) the effective hydraulic conductivity of the aquifer;
     (D) transmissivity and storage coefficient related to the aquifer; and
     (E) the estimated flow direction or directions of ground water and the rate of movement;
     (iv) the locations of surface waters within the area described in subsection (2)(a)(i) that are subject to an appropriation right, including but not limited to springs, creeks, streams, or rivers that may or may not show a net depletion;
     (v) evidence of water availability; and
     (vi) the locations of all wells or other sources of ground water of record within the area identified in subsection (2)(a)(i).
     (b) A hydrogeologic assessment must also include a water quality report that includes:
     (i) the location of existing documented hazards that could be affected or exacerbated by the appropriation right, such as areas of subsidence, along with a plan to mitigate any conditions or impacts;
     (ii) other water quality information necessary to comply with 75-5-410 and 85-2-364; and
     (iii) a description of any water treatment method that will be used at the time of any type of injection or introduction of water to the aquifer to ensure compliance with 75-5-410 and 85-2-364 and the water quality laws under Title 75, chapter 5.
     (3) The hydrogeologic assessment must include an analysis of whether the information required by subsection (2) predicts that there may be a net depletion of surface water in the area described in subsection (2)(a)(i) and the extent of the depletion, if any.
     (4) The hydrogeologic assessment, the model if provided, the test well data, the monitoring well data, and other related information must be submitted to the department. The department shall submit this information to the bureau of mines and geology. The bureau of mines and geology shall ensure that information submitted pursuant to this section is entered into the ground water information center database as part of the ground water assessment program.
     (5) An entity that has previously conducted some type of hydrogeologic assessment may submit the information from that assessment as the hydrogeologic assessment required by this section if the information meets the criteria and requirements of this section.

     History: En. Sec. 15, Ch. 391, L. 2007.


State Codes and Statutes

State Codes and Statutes

Statutes > Montana > 85 > 85_2 > 85_2_3 > 85-2-361


     85-2-361. Hydrogeologic assessment -- definition -- minimum requirements. (1) (a) For the purposes of 85-2-360 through 85-2-362, "hydrogeologic assessment" means a report for the project for or through which water will be put to beneficial use, the point of diversion, and the place of use that describes the geology, hydrogeologic environment, water quality with regard to the provisions of 75-5-410 and 85-2-364, and predicted net depletion, if any, including the timing of any net depletion, for surface water within the area described in subsection (2)(a)(i) within the closed basins that are subject to an appropriation right, including but not limited to rivers, streams, irrigation canals, or drains that might be affected by the new appropriation right and any predicted water quality changes that may result.
     (b) In predicting net depletion of surface water from a proposed use, consideration must be given, at a minimum, to:
     (i) the actual amount diverted for like beneficial uses;
     (ii) any amounts that will likely be lost in conveyance, if any, and whether any lost amounts are lost to the system through evaporation or other means or whether those amounts are returned to the system through percolation or other means; and
     (iii) any return flows from the proposed use, including but not limited to any treated wastewater return flows if the treated wastewater that is considered effluent meets the requirements of 75-5-410 and 85-2-364.
     (2) (a) A hydrogeologic assessment that will be used to predict net depletion of surface water resulting from a new appropriation right must include hydrogeologic data or a model developed by a hydrogeologist, a qualified scientist, or a qualified licensed professional engineer that incorporates for the new appropriation:
     (i) the area or estimated area of ground water that will be affected, not to exceed the boundaries of the drainage subdivisions established by the office of water data coordination, United States geological survey, and used by the water court, unless the applicant chooses to expand the boundaries;
     (ii) the geology in the area identified in subsection (2)(a)(i), including stratigraphy and structure;
     (iii) the parameters of the aquifer system within the area identified in subsection (2)(a)(i) to include, at a minimum, estimates for:
     (A) the lateral and vertical extent of the aquifer;
     (B) whether the aquifer is confined or unconfined;
     (C) the effective hydraulic conductivity of the aquifer;
     (D) transmissivity and storage coefficient related to the aquifer; and
     (E) the estimated flow direction or directions of ground water and the rate of movement;
     (iv) the locations of surface waters within the area described in subsection (2)(a)(i) that are subject to an appropriation right, including but not limited to springs, creeks, streams, or rivers that may or may not show a net depletion;
     (v) evidence of water availability; and
     (vi) the locations of all wells or other sources of ground water of record within the area identified in subsection (2)(a)(i).
     (b) A hydrogeologic assessment must also include a water quality report that includes:
     (i) the location of existing documented hazards that could be affected or exacerbated by the appropriation right, such as areas of subsidence, along with a plan to mitigate any conditions or impacts;
     (ii) other water quality information necessary to comply with 75-5-410 and 85-2-364; and
     (iii) a description of any water treatment method that will be used at the time of any type of injection or introduction of water to the aquifer to ensure compliance with 75-5-410 and 85-2-364 and the water quality laws under Title 75, chapter 5.
     (3) The hydrogeologic assessment must include an analysis of whether the information required by subsection (2) predicts that there may be a net depletion of surface water in the area described in subsection (2)(a)(i) and the extent of the depletion, if any.
     (4) The hydrogeologic assessment, the model if provided, the test well data, the monitoring well data, and other related information must be submitted to the department. The department shall submit this information to the bureau of mines and geology. The bureau of mines and geology shall ensure that information submitted pursuant to this section is entered into the ground water information center database as part of the ground water assessment program.
     (5) An entity that has previously conducted some type of hydrogeologic assessment may submit the information from that assessment as the hydrogeologic assessment required by this section if the information meets the criteria and requirements of this section.

     History: En. Sec. 15, Ch. 391, L. 2007.