Section 0400-45-01-.40 - GROUND WATER RULE(1) General Requirements:(a) The requirements of this rule constitute national primary drinking water regulations.(b) This rule applies to all public water systems that use ground water except that it does not apply to public water systems that combine all of their ground water with surface water or with ground water under the direct influence of surface water prior to treatment under Rule 0400-45-01-.31. For purposes of this rule, "ground water system" is defined as any public water system meeting this applicability statement, including consecutive systems receiving finished ground water.(c) All community public water systems designated as ground water systems for purposes of this rule which serve more than 50 connections or 150 persons, except for those systems excluded from the requirements of subparagraph (b) of this paragraph, must meet 4-log treatment of viruses by continuous chlorination (unless other disinfection methods are approved) before or at the first customer. Systems meeting 4-log inactivation and/or removal of viruses must be required to conduct compliance monitoring, the monitoring requirements under subparagraphs (4)(b) and (c) of this rule. Systems meeting the 4-log inactivation and/or removal of viruses are still subject to sanitary surveys, corrective action when deficiencies are identified and associated public notices under this rule. In no case shall contact time be less than 15 minutes.(d) Systems subject to this rule must comply with the following requirements: 1. Sanitary survey information requirements for all ground water systems as described in paragraph (2) of this rule.2. Microbial source water monitoring requirements for ground water systems that do not treat all of their ground water to at least 99.99 percent (4-log) treatment of viruses (using inactivation, removal, or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer as described in paragraph (3) of this rule.3. Treatment technique requirements, described in paragraph (4) of this rule, that apply to ground water systems that have fecally contaminated source waters, as determined by source water monitoring conducted under paragraph (3) of this rule, or that have significant deficiencies that are identified by the Department or that are identified by the Environmental Protection Agency under section 1445 of the Safe Drinking Water Act. A ground water system with fecally contaminated source water or with significant deficiencies subject to the treatment technique requirements of this rule must implement one or more of the following corrective action options: correct all significant deficiencies; provide an alternate source of water; eliminate the source of the contamination; or provide treatment that reliably achieves at least 4-log treatment of viruses (using inactivation, removal, or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer.4. Ground water systems that provide at least 4-log treatment of viruses (using inactivation, removal, or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer are required to conduct compliance monitoring to demonstrate treatment effectiveness, as described in subparagraph (4)(b) of this rule.5. If requested by the Department, ground water systems must provide the Department with any existing information that will enable the Department to perform a hydrogeologic sensitivity assessment. For purposes of this rule, "hydrogeologic sensitivity assessment" is a determination of whether ground water systems obtain water from hydrogeologically sensitive settings.(e) Ground water systems must comply, unless otherwise noted, with the requirements of this rule beginning December 1, 2009.(2) Sanitary Surveys for Ground Water Systems(a) Ground water systems must provide the Department, at the Department's request, any existing information that will enable the Department to conduct a sanitary survey.(b) For the purposes of this rule, a "sanitary survey," as conducted by the Department, includes but is not limited to, an onsite review of the water source(s) (identifying sources of contamination by using results of source water assessments or other relevant information where available), facilities, equipment, operation, maintenance, and monitoring compliance of a public water system to evaluate the adequacy of the system, its sources and operations and the distribution of safe drinking water. Sanitary surveys for the purpose of this paragraph include the applicable components listed parts 1. through 8. of this subparagraph. 4. Finished water storage5. Pumps, pump facilities, and controls,6. Monitoring, reporting, and data verification,7. System management and operation, and8. Operator compliance with Department requirements. (3) Ground water source microbial monitoring and analytical methods. (a) A ground water system must conduct triggered source water monitoring if the conditions identified in parts 1. and either part 2. or 3. of this subparagraph exist. 1. The system does not provide at least 4-log treatment of viruses (using inactivation, removal or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer for each ground water source; and2. The system is notified that a sample collected under paragraph (1) of Rule 0400-45-01-.07 is total coliform-positive and the sample is not invalidated under paragraph (3) of Rule 0400-45-01-.07 until March 31, 2016; or3. The system is notified that a sample collected under paragraphs (4) through (7) of Rule 0400-45-01-.41 is total coliform-positive and the sample is not invalidated under subparagraph (3)(c) of Rule 0400-45-01-.41 beginning April 1, 2016.(b) A ground water system must collect, within 24 hours of notification of the total coliform-positive sample, at least one ground water source sample from each ground water source in use at the time the total coliform-positive sample was collected under paragraph (1) of Rule 0400-45-01-.07 until March 31, 2016, or collected under paragraphs (4) through (7) of Rule 0400-45-01-.41 beginning April 1, 2016, except as provided in part 2 of this subparagraph. 1. The Department may extend the 24-hour time limit on a case-by-case basis if the system cannot collect the ground water source sample within 24 hours due to circumstances beyond its control. In the case of an extension, the Department must specify how much time the system has to collect the sample.2. If approved by the Department, systems with more than one groundwater source may meet the requirements of this subparagraph by sampling representative groundwater source or sources. If directed by the Department, systems must submit for Department approval a triggered source water monitoring plan that identifies one or more groundwater sources that are representative of each monitoring site in the system's sample siting plan under paragraph (1) of Rule 0400-45-01-.07 until March 31, 2016 or under paragraph (3) of Rule 0400-45-01-.41 beginning April 1, 2016, and that the system intends to use for representative sampling under this paragraph.3. Until March 31, 2016, a ground water system serving 1,000 people or fewer may use a repeat sample collected from a ground water source to meet both the requirements of paragraph (2) of Rule 0400-45-01-.07 and to satisfy the monitoring requirements of this subparagraph for that ground water source only if the Department approves the use of E. coli as a fecal indicator for source water monitoring under this paragraph. If the repeat sample collected from the ground water source is E. coli positive, the system must comply with subparagraph (c) of this paragraph. Beginning April 1, 2016, the use of ground water source sample as a repeat sample shall no longer be allowed to meet the requirements of paragraph (2) of Rule 0400-45-01-.07.(c) If the Department does not require corrective action under part 2 of subparagraph (a) of paragraph (4) of this rule for fecal-indicator positive source water sample collected under subparagraph (b) of this paragraph that is not invalidated under subparagraph (h) of paragraph (3) this rule, the system must collect five additional source water samples from the same source within 24 hours of being notified of the fecal indicator-positive sample.(d) Consecutive and Wholesale Systems 1. In addition to the other requirements of this paragraph, a consecutive ground water system that has a total coliform-positive sample collected under paragraph (1) of Rule 0400-45-01-.07 until March 31, 2016, or under Rule 0400-45-01-.41(4) through 0400-45-01-.41(7) beginning April 1, 2016, must notify the wholesale system(s) within 24 hours of being notified of the total coliform-positive sample.2. In addition to the other requirements of this paragraph, a wholesale ground water system must comply with subparts (i) and (ii) of this part. (i) A wholesale ground water system that receives notice from a consecutive system it serves that a sample collected under paragraph (1) of Rule 0400-45-01 -07, until March 31, 2016, or under Rule 0400-45-01-.41(4) through 0400-45-01-.41(7) beginning April 1, 2016, is total coliform-positive must, within 24 hours of being notified, collect a sample from its ground water source(s) under subparagraph (b) of this paragraph and analyze it for a fecal indicator under subparagraph (g) of this paragraph.(ii) If the sample collected under subpart (3)(d)2(i) of this rule is fecal indicator-positive, the wholesale ground water system must notify all consecutive systems served by that ground water source of the fecal indicator source water positive within 24 hours of being notified of the ground water source sample monitoring result and must meet the requirements of subparagraph (c) of this paragraph.(e) Exceptions to the Triggered Source Water Monitoring Requirements. A ground water system is not required to comply with the source water monitoring requirements of this paragraph if either of the following conditions exists:
1. The Department determines, and documents in writing, that the total coliform-positive sample collected under paragraph (1) of Rule 0400-45-01-.07, until March 31, 2016, or under Rule 0400-45-01-.41(4) through 0400-45-01-.41(7) beginning April 1, 2016, is caused by a distribution system deficiency; or2. The total coliform-positive sample collected under paragraph (1) of Rule 0400-45-01-.07, until March 31, 2016, or under Rule 0400-45-01-.41(4) through 0400-45-01-.41(7) beginning April 1, 2016, is collected at a location that meets Department criteria for distribution system conditions that will cause total coliform-positive samples and the system requests in writing that the Department make the determination as to whether the total coliform-positive sample was due to distribution system conditions that will cause total coliform-positive samples.(f) Assessment Source Water Monitoring. If directed by the Department, ground water systems must conduct assessment source water monitoring that meets Department-determined requirements for such monitoring. A ground water system conducting assessment source water monitoring may use a triggered source water sample collected under subparagraph (b) of this paragraph to meet the requirements of subparagraph (f) of this paragraph. Department-determined assessment source water monitoring requirements may include:1. Collection of a total of 12 ground water source samples that represent each month the system provides ground water to the public,2. Collection of samples from each well unless the system obtains written Department approval to conduct monitoring at one or more wells within the ground water system that are representative of multiple wells used by that system and that draw water from the same hydrogeologic setting,3. Collection of standard sample volume of at least 100 ml for fecal indicator analysis regardless of fecal indicator or analytical method used,4. Analysis of all ground water source samples using one of the analytical methods listed in part (10)(a)6. of Rule 0400-45-01-.14 for the presence of E. coli or enterococci,5. Collection of ground water samples at a location prior to any treatment of the ground water source unless the Department approves a sampling location after treatment, and6. Collection of ground water source samples at the well itself unless the system's configuration does not allow for sampling at the well itself and the Department approves an alternate sampling location that is representative of the water quality of that well.(g) Analytical and Sampling methods.1. A ground water system subject to the source water monitoring requirements of this paragraph must collect a standard sample volume of at least 100 mL for fecal indicator analysis regardless of the fecal indicator or analytical method used.2. The analytical method to be used is prescribed in part (10)(a)6. of Rule 0400-45-01-.14.(h) Invalidation of fecal indicator-positive ground water source sample. A ground water system may obtain Department invalidation of a fecal indicator-positive ground water source sample collected under this paragraph only under the conditions specified in parts 1. and 2. of this subparagraph.1. The system provides the Department with written notice from the laboratory that improper sample analysis has occurred; or2. The Department determines and documents in writing that there is substantial evidence that a fecal-indicator positive ground water source sample is not related to source water quality.(i) If the Department invalidates a fecal indicator-positive ground water sample, the ground water system must collect another source water sample under this paragraph within 24 hours of being notified by the Department of its invalidation decision and have it analyzed for the same fecal indicator using the analytical methods in part (10)(a)6. of Rule 0400-45-01-.14. The Department may extend the 24-hour time limit on a case-by-case basis if the system cannot collect the source water sample within 24 hours due to circumstances beyond its control. In the case of an extension, the Department must specify how much time the system has to collect the sample.(j) Sampling location. Any ground water source sample required under this paragraph must be collected at a location prior to any treatment of the ground water source unless the Department approves a sampling location after treatment. 1. If the system's configuration does not allow sampling at the well itself, the system may collect a sample at a Department-approved location to meet the requirements of this paragraph if the sample is representative of the water quality of that well.(k) New Sources. If directed by the Department, a ground water system that places a new ground water source into service after November 30, 2009, must conduct assessment source water monitoring under subparagraph (f) of this paragraph. If directed by the Department, the system must begin monitoring before the ground water source is used to provide water to the public.(l) Public Notification. A ground water system with a ground water source sample collected under this paragraph that is fecal indicator-positive and that is not invalidated under subparagraph (h) of this paragraph, including consecutive systems served by the ground water source, must conduct public notification under paragraph (2) of Rule 0400-45-01-.19.(m) Monitoring Violations. Failure to meet the requirements of subparagraphs (a) through (k) of this paragraph is a monitoring violation and requires the ground water system to provide public notification under paragraph (4) of Rule 0400-45-01-.19.(4) Treatment Technique Requirements for Ground Water Systems (a) Ground water systems with significant deficiencies or source water fecal contamination. 1. The treatment technique requirements of this rule must be met by ground water systems when a significant deficiency is identified or when a ground water source sample collected under subparagraph (3)(c) of this rule is fecal-indicator positive.2. If directed by the Department, a ground water system with a ground water source sample collected under subparagraph (3)(b), (d), or (f) of this rule that is fecal indicator-positive must comply with the treatment technique requirements of this rule.3. When a significant deficiency is identified at a Subpart H public water system that uses both ground water and surface water or ground water under the direct influence of surface water, the system must comply with provisions of this rule except in cases where the Department determines that the significant deficiency is in a portion of the distribution system that is served solely by surface water or ground water under the direct influence of surface water.4. Unless the Department directs the ground water system to implement a specific corrective action, the ground water system must consult with the Department regarding the appropriate corrective action within 30 days of receiving written notice from the Department of a significant deficiency, written notice from a laboratory that a ground water source sample collected under subparagraph (3)(c) of this rule was found to be fecal indicator-positive, or direction from the Department that a fecal indicator positive collected under subparagraph (3)(b), (d) or (f) of this rule requires corrective action. For purposes of this rule, significant deficiencies include, but are not limited to, defects in design, operation or maintenance, or a failure or malfunction of the sources, treatment, storage, or distribution system that the Department determines to be causing, or have the potential of causing, the introduction of contamination into the water delivered to consumers.5. Within 120 days (or earlier if directed by the Department) of receiving written notification from the Department of a significant deficiency, written notice from a laboratory that a ground water source sample collected under subparagraph (3)(c) of this rule was found to be fecal indicator-positive, or direction from the Department that a fecal indicator-positive sample collected under subparagraph (3)(b), (d) or (f) of this rule requires corrective action, the ground water system must either:(i) Have completed corrective action in accordance with applicable Department plan review processes or other Department guidance or direction, if any, including Department-specified interim measures, or(ii) Be in compliance with a Department-approved corrective action plan and schedule subject to conditions in items (I) and (II) of this subpart. (I) Any subsequent modifications to a Department-approved corrective action plan and schedule must also be approved by the Department.(II) If the Department specifies interim measures for protection of the public health pending Department approval of the corrective action plan and schedule or pending completion of the corrective action plan, the system must comply with these interim measures as well as with any schedule specified by the Department.6. Corrective Action Alternatives. Ground water systems that meet the conditions of part 1. or 2. of this subparagraph must implement one or more of the following corrective action alternatives: (i) Correct all significant deficiencies;(ii) Provide an alternate source of water;(iii) Eliminate the source of contamination; or(iv) Provide treatment that reliably achieves at least 4-log treatment of viruses (using inactivation, removal, or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source.7. Special notice to the public of significant deficiencies or source water fecal contamination. (i) In addition to the applicable public notification requirements of Rule 0400-45-01-.19, a community ground water system that receives notice from the Department of a significant deficiency or notification of a fecal indicator-positive ground water source sample that is not invalidated by the Department under subparagraph (3)(h) of this rule must inform the public served by the water system under subparagraph (4)(g) of Rule 0400-45-01-.35 of the fecal indicator-positive source sample or of any significant deficiency that has not been corrected. The system must continue to inform the public annually until the significant deficiency is corrected or the fecal contamination in the ground water source is determined by the Department to be corrected under part 5. of this subparagraph.(ii) In addition to the applicable public notification requirements of Rule 0400-45-01-.19, a non-community ground water system that receives notice from the Department of a significant deficiency must inform the public served by the water system in a manner approved by the Department of any significant deficiency that has not been corrected within 12 months of being notified by the Department, or earlier if directed by the Department. The system must continue to inform the public annually until the significant deficiency is corrected. The information must include: (I) The nature of the significant deficiency and the date the significant deficiency was identified by the Department;(II) The Department-approved plan and schedule for correction of the significant deficiency, including interim measures, progress to date, and any interim measures completed; and(III) For systems with a large proportion of non-English speaking consumers, as determined by the Department, information in the appropriate language(s) regarding the importance of the notice or a telephone number or address where consumers may contact the system to obtain a translated copy of the notice or assistance in the appropriate language.(iii) If directed by the Department, a non-community water system with significant deficiencies that have been corrected must inform its customers of the significant deficiencies, how the deficiencies were corrected, and the dates of the correction under subpart (ii) of this part.(b) Compliance Monitoring 1. Existing ground water sources. A ground water system that is not required to meet the source water monitoring requirements of this rule for any ground water source because it provides at least 4-log treatment of viruses (using inactivation, removal, or a Department approved combination of 4-log virus inactivation and removal) before or at the first customer for any ground water source before December 1, 2009, must notify the Department in writing that it provides at least 4-log treatment of viruses (using inactivation, removal, or a Department approved combination of 4-log virus inactivation and removal) before or at the first customer for the specified ground water source and begin compliance monitoring in accordance with subparagraph (c) of this paragraph by December 1, 2009. Notification to the Department must include engineering, operational, or other information that the Department requests to evaluate the submission.
2. New ground water sources. A ground water system that places a ground water source in service after November 30, 2009, that is not required to meet the source water monitoring requirements of this rule for any ground water source because it provides at least 4-log treatment of viruses (using inactivation, removal, or a Department approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source must comply with the requirements of subparts (i) and (ii) of this part. (i) The system must notify the Department in writing that it provides at least 4-log treatment of viruses (using inactivation, removal, or a Department approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source. Notification to the Department must include engineering, operational, or other information that the Department requests to evaluate the submission.(ii) The system must conduct compliance monitoring as required under subparagraph (c) of this paragraph within 30 days of placing the source into service.(c) Monitoring Requirements1. A ground water system subject to the requirements of subparagraph (a), part (b)1. or part (b)2. of this paragraph must monitor the effectiveness and reliability of the treatment for that ground water source before or at the first customer as follows: (i) A ground water system that serves greater than 3,300 people must continuously monitor the residual disinfectant concentration using analytical methods specified in subparagraph (10)(i) of Rule 0400-45-01-.14 at a location approved by the Department and must record the lowest residual disinfectant concentration each day that water from the ground water source is served to the public. The ground water system must maintain the Department-determined residual disinfectant concentration every day the ground water system serves water from the ground water source to the public. If there is a failure in the continuous monitoring equipment, the ground water system must conduct grab sampling every four hours until the continuous monitoring equipment is returned to service. The system must resume continuous residual disinfectant monitoring within 14 days.(ii) A ground water system that serves 3,300 or fewer people must monitor the residual disinfectant concentration using analytical methods specified in subparagraph (10)(i) of Rule 0400-45-01-.14 at a location approved by the Department and record the residual disinfection each day that water from the ground water source is served to the public. The ground water system must maintain the Department-determined residual disinfectant concentration every day the ground water system serves water from the ground water source to the public. The ground water system must take a daily grab sample during the hour of peak flow or at another time specified by the Department. If any daily grab sample measurement falls below the Department-determined residual disinfectant concentration, the ground water system must take follow-up samples every four hours until the residual disinfectant concentration is restored to the Department-determined level. Alternatively, a ground water system that serves 3,300 or fewer people may monitor continuously and meet the requirements of subpart (i) of this part.(iii) Membrane filtration. A ground water system that uses membrane filtration to meet the requirements of this rule must monitor the membrane filtration process in accordance with all Department-specified monitoring requirements and must operate the membrane filtration in accordance with all Department-specified compliance requirements. A ground water system that uses membrane filtration is in compliance with the requirement to achieve at least 4-log removal of viruses when: (I) The membrane has an absolute molecular weight cutoff (MWCO), or alternate parameter that describes the exclusion characteristics of the membrane, that can reliably achieve at least 4-log removal of viruses;(II) The membrane process is operated in accordance with Department-specified compliance requirements; and(III) The integrity of the membrane is intact.(iv) Alternative treatment. A ground water system that uses a Department-approved alternative treatment to meet the requirements of this rule by providing at least 4-log treatment of viruses (using inactivation, removal, or a Department-approved combination of 4-log virus inactivation and removal) before or at the first customer must: (I) Monitor the alternative treatment in accordance with all Department-specified monitoring requirements; and(II) Operate the alternative treatment in accordance with all compliance requirements that the Department determines to be necessary to achieve at least 4-log treatment of viruses.(d) Failure to meet the monitoring requirements of subparagraphs (b) and (c) of this paragraph is a monitoring violation and requires the ground water system to provide public notification under paragraph (4) of Rule 0400-45-01-.19.(5) Treatment Technique Violations for Ground Water Systems. (a) A ground water system with a significant deficiency is in violation of the treatment technique requirement if, within 120 days (or earlier if directed by the Department) of receiving written notice from the Department of a significant deficiency, the system: 1. Does not complete corrective action in accordance with any applicable Department plan review processes or other Department guidance and direction, including Department specified interim actions and measures, or2. Is not in compliance with a Department-approved corrective action plan and schedule.(b) Unless the Department invalidates a fecal indicator-positive ground water source sample under subparagraph (3)(h) of this rule, a ground water system is in violation of the treatment technique requirement if, within 120 days (or earlier if directed by the Department) of meeting the conditions of part (4)(a)1. or 2. of this rule, the system:1. Does not complete corrective action in accordance with any applicable Department plan review processes or other Department guidance and direction, including Department-specified interim measures, or2. Is not in compliance with a Department-approved corrective action plan and schedule.(c) A ground water system subject to the requirements of subparagraph (4)(c) of this rule that fails to maintain at least 4-log treatment of viruses (using inactivation, removal, or a Department approved combination of 4-log virus inactivation and removal) before or at the first customer for a ground water source is in violation of the treatment technique requirement if the failure is not corrected within four hours of determining the system is not maintaining at least 4-log treatment of viruses before or at the first customer.(d) The ground water system must give public notification under paragraph (3) of Rule 0400-45-01-.19 for the treatment technique violations specified in subparagraphs (a), (b) and (c) of this paragraph.(6) Reporting and Recordkeeping for Ground Water Systems(a) In addition to the requirements of Rule 0400-45-01-.18, a ground water system regulated under this rule must provide the following information to the Department:1. A ground water system conducting compliance monitoring under subparagraphs (4)(b) and (c) of this rule must notify the Department any time the system fails to meet any Department-specified requirements including, but not limited to, minimum residual disinfectant concentration, membrane operating criteria or integrity, and alternative treatment operating criteria, if operation in accordance with the criteria or requirements is not restored within four hours. The ground water system must notify the Department as soon as possible, but in no case later than the end of the next business day.2. After completing any corrective action under subparagraph (4)(a) of this rule, a ground water system must notify the Department within 30 days of completion of the corrective action.3. If a ground water system subject to the requirements of subparagraph (a) of paragraph (3) of this rule does not conduct source water monitoring under part 2. of subparagraph (e) of paragraph (3) of this rule, the system must provide documentation to the Department within 30 days of the total coliform positive sample that it met the Department criteria and request in writing that the Department make the determination.(b) Recordkeeping. In addition to the requirements of Rule 0400-45-01-.20, a ground water system regulated under this rule must maintain the following information in its records: 1. Documentation of corrective actions. Documentation shall be kept for a period of not less than ten years.2. Documentation of notice to the public as required under part (4)(a)7. of this rule. Documentation shall be kept for a period of not less than three years.3. Records of decisions under part (3)(e)2. of this rule and records of invalidation of fecal indicator-positive ground water source samples under subparagraph (3)(h) of this rule. Documentation shall be kept for a period of not less than five years.4. For consecutive systems, documentation of notification to the wholesale system(s) of total-coliform positive samples that are not invalidated under paragraph (3) of Rule 0400-45-01-.07 until March 31, 2016, or under Rule 0400-45-01-.41(3) beginning April 1, 2016. Documentation shall be kept for a period of not less than five years.5. For systems, including wholesale systems, that are required to perform compliance monitoring under subparagraphs (4)(b) and (c) of this rule: (i) Records of Department-specified minimum disinfectant residual. Documentation shall be kept for a period of not less than ten years.(ii) Records of the lowest daily residual disinfectant concentration and records of the date and duration of any failure to maintain the Department-prescribed minimum residual disinfectant concentration for a period of more than four hours. Documentation shall be kept for a period of not less than five years.(iii) Records of Department-specified compliance requirements for membrane filtration and of parameters specified by the Department for Department-approved alternative treatment and records of the date and duration of any failure to meet the membrane operating, membrane integrity, or alternative treatment operating requirements for more than four hours. Documentation shall be kept for a period of not less than five years.Tenn. Comp. R. & Regs. 0400-45-01-.40
Original rule filed August 1, 2012; effective October 30, 2012. Rule was previously numbered 1200-05-01. Amendments and new rules filed November 24, 2015; effective February 22, 2016. Amendments filed November 19, 2018; effective 2/17/2019.Authority: T.C.A. §§ 4-5-201, et seq. and 68-221-701, et seq.