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<chapter num="02" heading="Enforcement of the Plumbing Law by the Board" title_num="09" subtitle_num="20">
  <regulation prefix="Regulation" num=".01" heading="Qualifications of Plumbers—How Certificates May Be Issued.">
    <paragraph num="A.">
      <text>All plumbing work shall be performed, or supervised and approved, by a licensed master plumber who is:</text>
      <paragraph num="(1)">
        <text>Familiar with its design and purpose; and</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Available to direct and control all journey and apprentice plumbers.</text>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>The license of a master plumber will be issued in the name of the master plumber.</text>
    </paragraph>
    <paragraph num="C.">
      <text>All plumbing work performed, or supervised and approved, by a licensed master plumber shall be of ordinary worker-like skill and quality and shall conform both to the regulations promulgated by the Board and to applicable local laws and regulations.</text>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".02" heading="Required Training for Apprentice Plumbers.">
    <paragraph num="A.">
      <text>Before an apprentice plumber may be examined for a license as a journey plumber, the apprentice plumber shall:</text>
      <paragraph num="(1)">
        <text>Receive at least 7,500 working hours of instruction and experience in the installation and repair of plumbing material and systems, under the direction and control of a master plumber; and</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Be registered with the Board for the duration of the apprenticeship training.</text>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>To avoid undue hardship, the Board may give credit for hours worked in the installation and repair of plumbing material and systems by an unregistered apprentice plumber.</text>
    </paragraph>
    <paragraph num="C.">
      <text>It is recommended that the instruction and experience include:</text>
      <paragraph num="(1)">
        <text>Installation of piping for waste, soil, sewerage, vent and rain leader lines in copper,</text>
        <paragraph num="(a)">
          <text>Name and size of sewer fittings, wyes, tees, bend, packing, pouring, caulking joints;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Use of proper fittings in making connections;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Proper pitch in sewer lines;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Regulations on cesspools and septic tanks;</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Local codes governing plumbing.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(2)">
        <text>Installation of piping for hot and cold water for domestic purposes:	1,400 hrs.</text>
        <paragraph num="(a)">
          <text>Rough-in water and gas piping for fixtures;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Cut holes in floors and joist;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Measure up piping;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Run pipe in copper, steel, or plastic;</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Installation of domestic water boilers and hot water heaters;</text>
        </paragraph>
        <paragraph num="(f)">
          <text>Install tankless or tank-type copper coil heaters in boilers;</text>
        </paragraph>
        <paragraph num="(g)">
          <text>Automatic gas water heaters with vent to chimney;</text>
        </paragraph>
        <paragraph num="(h)">
          <text>Measure up piping and connect to hot and cold water lines;</text>
        </paragraph>
        <paragraph num="(i)">
          <text>Use of pipe cutters and reamers;</text>
        </paragraph>
        <paragraph num="(j)">
          <text>Cut threads with stocks and dies, or with pipe threading machines;</text>
        </paragraph>
        <paragraph num="(k)">
          <text>Use of joint compound on threads and screw up fittings on pipe with pipe wrenches;</text>
        </paragraph>
        <paragraph num="(l)">
          <text>Local codes governing plumbing.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(3)">
        <text>Installation of lead pipe, tin pipe, sheet lead, and solder work: 	180 hrs.</text>
        <paragraph num="(a)">
          <text>Proper use of tools;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Kinds of materials and fluxes;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Correct heating temperatures.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(4)">
        <text>Assembly in position and connection of fixtures and appliances used in the plumbing</text>
        <paragraph num="(a)">
          <text>Rough-in waste, soil, and vent lines for fixtures;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Pack, pour, and caulk fittings and pipe;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Make up fittings, run piping, and hook up main sewer;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Lay out water lines, hot and cold;</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Place and connect various plumbing fixtures;</text>
        </paragraph>
        <paragraph num="(f)">
          <text>Local codes governing plumbing.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(5)">
        <text>Service work—maintenance and repair of plumbing:	480 hrs.</text>
        <paragraph num="(a)">
          <text>Leaks;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Renewals;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Stoppage of lines;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Alterations;</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Trouble shooting plumbing systems.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(6)">
        <text>Operation, care, safety, and use of all tools and materials connected with the trade:	 850 hrs.</text>
        <paragraph num="(a)">
          <text>Pipe and fittings, tees, ells, 45-degree ells and nipples;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Black, galvanized, wrought iron, wrought steel, copper, and plastic pipe;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Use and care of tools;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Pipe cutters, reamers, stocks and dies, size of wrenches, caulking irons, lead pots,</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Types of tubs—corner or recess, left or right;</text>
        </paragraph>
        <paragraph num="(f)">
          <text>Lavatories—cast iron, vitreous china, and stainless steel;</text>
        </paragraph>
        <paragraph num="(g)">
          <text>Closet combinations—vitreous china, closed couples, siphon action, flushometer types.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(7)">
        <text>Gas installation: 	750 hrs.</text>
        <paragraph num="(a)">
          <text>Types of gas installations—natural and LPG;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Venting gas systems;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Gas appliances and controls;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Local codes governing gas fitting.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(8)">
        <text>Special purpose installations: 	180 hrs.</text>
        <paragraph num="(a)">
          <text>Swimming pools;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Fountains and planters;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Lawn sprinkling and vacuum systems;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Local codes governing plumbing.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(9)">
        <text>Plan reading:	 375 hrs.</text>
        <paragraph num="(a)">
          <text>Sketching;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Sleeve drawing and deck layout;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Drawing coordination.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(10)">
        <text>Builders level transit: 	275 hrs.</text>
        <paragraph num="(a)">
          <text>Layout of sewer and water lines;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Shoot grades and elevations.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(11)">
        <text>Welding connected with the trade: 	480 hrs.</text>
        <paragraph num="(a)">
          <text>Gas, metallic arc, and heliarc welding;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Use of torch;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Proper flame, fluxes, and solder;</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Pipe welding;</text>
        </paragraph>
        <paragraph num="(e)">
          <text>Proper welding procedures and techniques;</text>
        </paragraph>
        <paragraph num="(f)">
          <text>Identification of welding rods and materials;</text>
        </paragraph>
        <paragraph num="(g)">
          <text>Flame cutting;</text>
        </paragraph>
        <paragraph num="(h)">
          <text>Brazing.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(12)">
        <text>Rigging: 	375 hrs.</text>
        <paragraph num="(a)">
          <text>Materials;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Equipment.</text>
        </paragraph>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".03" heading="Examinations for Journey Plumber Certificates.">
    <paragraph num="A.">
      <text>Each applicant for the journey plumber's examination shall provide certification that the applicant has accrued at least 7,500 working hours, that is, 4 years of apprenticeship instruction and experience in the installation and repair of plumbing material and systems, under the direction and control of a master plumber. The following conditions apply:</text>
      <paragraph num="(1)">
        <text>Up to 1,500 hours of accredited, approved school study may be applied towards the 7,500-hours requirement, which may be composed of classroom plumbing work or study under a vocational or technical program accredited by the State Department of Education or under the apprenticeship agreement registered with the Maryland Apprenticeship and Training Council;</text>
      </paragraph>
      <paragraph num="(2)">
        <text>The applicant shall furnish the certification, made under penalty of perjury, with the examination application;</text>
      </paragraph>
      <paragraph num="(3)">
        <text>Hours accrued may not be credited to an individual serving under an apprenticeship agreement registered with the Maryland Apprenticeship and Training Council unless the individual is also licensed with the Board as an apprentice plumber.</text>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>Examinations.</text>
      <paragraph num="(1)">
        <text>The Board shall examine qualified applicants by written examination.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>If the applicant satisfactorily documents that the applicant has a disability as defined under The Americans With Disabilities Act (ADA), the Board will make those accommodations necessary for the administration of the examination.</text>
      </paragraph>
      <paragraph num="(3)">
        <text>An applicant shall attain a passing grade of 70 to qualify for licensure as a journey plumber.</text>
      </paragraph>
    </paragraph>
    <paragraph num="C.">
      <text>Out-of-State Applicants.</text>
      <paragraph num="(1)">
        <text>A nonresident applicant or an applicant whose work experience has not been in Maryland shall provide certification that:</text>
        <paragraph num="(a)">
          <text>The applicant has accrued at least 7,500 working hours, that is, 4 years of apprenticeship instruction and experience in the installation and repair of plumbing material and systems, under the direction and control of a licensed master plumber; and</text>
        </paragraph>
        <paragraph num="(b)">
          <text>The master plumber under whom the applicant trained received a license by passing a written competency examination.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(2)">
        <text>Up to 1,500 hours of accredited, approved school study may be applied towards the 7,500-hour requirement.</text>
      </paragraph>
      <paragraph num="(3)">
        <text>The applicant shall furnish the certification as to accrued work experience and the qualifications of the supervisory master plumber, under penalty of perjury, with the examination application.</text>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".04" heading="Examinations for Master Plumber Certificates.">
    <paragraph num="A.">
      <text>Each applicant for the master plumber's examination shall provide certification, under penalty of perjury, that the applicant has accrued at least 2 years, that is, 3,750 working hours of practical experience as a journey plumber, in the installation and repair of plumbing material and systems under the direction and control of a master plumber.</text>
    </paragraph>
    <paragraph num="B.">
      <text>The candidate shall be examined on:</text>
      <paragraph num="(1)">
        <text>General knowledge of the regulations as may be provided by the Board;</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Knowledge of physics and hygiene as may deal with the proper and safe methods of supplying water to a building, and of removing water and sewage from it; and</text>
      </paragraph>
      <paragraph num="(3)">
        <text>Drainage, hydraulics, pneumatics, and hydrostatics insofar as they relate to the proper construction of work required in providing plumbing services.</text>
      </paragraph>
    </paragraph>
    <paragraph num="C.">
      <text>Applicants shall also be required to demonstrate their ability to comprehend and interpret plans and drawings, showing the arrangements of plumbing fixtures and other related parts of the plumbing system.</text>
    </paragraph>
    <paragraph num="D.">
      <text>Unless specifically provided for, each applicant shall answer all examination questions in writing.</text>
    </paragraph>
    <paragraph num="E.">
      <text>If the applicant satisfactorily documents that the applicant has a disability as defined under The Americans With Disabilities Act (ADA), the Board will make those accommodations necessary for the administration of the examination.</text>
    </paragraph>
    <paragraph num="F.">
      <text>If an applicant successfully completes the examination under §E of this regulation, the Board shall grant to the applicant a license as a master plumber upon a showing that the:</text>
      <paragraph num="(1)">
        <text>Applicant's ability to function as a master plumber is not significantly impaired by the dyslexia or other reading disability; and</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Applicant is otherwise competent and qualified to become a master plumber.</text>
      </paragraph>
    </paragraph>
    <paragraph num="G.">
      <text>Out-of-State Applicants.</text>
      <paragraph num="(1)">
        <text>A nonresident applicant or an applicant whose work experience has not been in Maryland shall accrue a total of at least 11,250 working hours, that is, 6 years of practical experience in the installation and repair of plumbing material and systems.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>The applicant shall furnish information about the applicant's work experience, under penalty of perjury, as follows:</text>
        <paragraph num="(a)">
          <text>Certification of at least 4 years of the required total number of years, that is, 7,500 working hours spent in the installation and repair of plumbing material and systems under the direction and control of a licensed master plumber;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Certification of at least 2 years, that is, 3,750 hours of work in the plumbing trade as a journey plumber;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>Certification that the journey plumber's license was received by passing a written competency examination; and</text>
        </paragraph>
        <paragraph num="(d)">
          <text>Certification that the master plumber for whom the applicant worked received a license by passing a written competency examination.</text>
        </paragraph>
      </paragraph>
      <paragraph num="(3)">
        <text>If the nonresident applicant is from an area that does not require licensure of journeyperson plumbers, and the applicant holds a master plumber's license, the applicant shall provide certification with the application that:</text>
        <paragraph num="(a)">
          <text>The applicant accrued at least 7,500 hours of practical experience in the plumbing trade under the direction and control of a licensed master plumber;</text>
        </paragraph>
        <paragraph num="(b)">
          <text>The master plumber for whom the applicant worked received a license by passing a written competency examination;</text>
        </paragraph>
        <paragraph num="(c)">
          <text>The applicant's master plumber license was received by passing a written competency examination; and</text>
        </paragraph>
        <paragraph num="(d)">
          <text>The applicant has accrued at least 2 years, that is, 3,750 working hours in the installation and repair of plumbing material and systems since receiving the master plumber's license.</text>
        </paragraph>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".05" heading="Passing Grade Required for a Master's License.">
    <text>An applicant shall attain a passing grade of 70 to quality for a license as a master plumber.</text>
  </regulation>
  <regulation prefix="Regulation" num=".06" heading="Applicants Failed.">
    <paragraph num="A.">
      <text>Any applicant who failed the examination for either a master or journey license may apply and pay the prescribed fee for another examination. A period of 1 month shall elapse before a failed applicant may retake an examination.</text>
    </paragraph>
    <paragraph num="B.">
      <text>Applicants who have failed an examination may review their examination papers upon written request to the Board. This request shall be made within 30 days after the applicant has been notified that the applicant failed to attain the required grade.</text>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".07" heading="Applicants for Renewal of License.">
    <paragraph num="A.">
      <text>All apprentice, journey, and master plumbers eligible for renewal shall renew their licenses every 2 years.</text>
    </paragraph>
    <paragraph num="B.">
      <text>All applicants for renewal, after submitting their written application for renewal accompanied by the required fee, shall be issued a new license by the Board.</text>
    </paragraph>
    <paragraph num="C.">
      <text>Any applicant for renewal who has for 5 consecutive years failed to renew a license is subject to examination before being issued a new license.</text>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".08" heading="Issuing of License on a Reciprocal Basis.">
    <paragraph num="A.">
      <text>The Board shall issue a master or journey plumber license on a reciprocal basis to applicants living in Baltimore County or the Washington Suburban Sanitary District who:</text>
      <paragraph num="(1)">
        <text>Have passed the master or journey plumber examination in either jurisdiction;</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Are in good standing in that jurisdiction; and</text>
      </paragraph>
      <paragraph num="(3)">
        <text>Intend to do business in Maryland outside of Baltimore County or Washington Suburban Sanitary District.</text>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>The Board shall give examinations for journey or master plumber licenses to applicants living outside the State who:</text>
      <paragraph num="(1)">
        <text>Demonstrate that they have served an apprenticeship, or had practical experience, under supervision equivalent to that required in Maryland; or</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Demonstrate the same level of proficiency and study required of applicants serving an apprenticeship or gaining practical experience in Maryland.</text>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".09" heading="Advertisements.">
    <paragraph num="A.">
      <text>Definitions. In this regulation, the following terms have the meanings indicated:</text>
      <paragraph num="(1)">
        <text>“Current master plumber” means the individual responsible for supervising and controlling the work of all individuals providing or assisting in providing plumbing services in a business.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>“Current natural gas fitter” means the individual responsible for supervising and controlling the work of all individuals providing or assisting in providing natural gas services in a business.</text>
      </paragraph>
      <paragraph num="(3)">
        <text>“Current propane gas fitter” means the individual responsible for supervising and controlling the work of all individuals providing or assisting in providing propane gas services in a business.</text>
      </paragraph>
      <paragraph num="(4)">
        <text>“License number” means the license registration certificate number displayed on the license document or propane gas fitter certificate issued to a licensee or certificate holder by the Board.</text>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>Requirements for Plumbers.</text>
      <paragraph num="(1)">
        <text>The license number of the current master plumber shall be displayed on all documents used by any person holding themselves out to the public as providing plumbing services.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Each vehicle that advertises plumbing services shall display the words “MD Licensed Plumber” and the license number of the current master plumber on both sides of the vehicle.</text>
      </paragraph>
    </paragraph>
    <paragraph num="C.">
      <text>Requirements for Licensed Natural Gas Fitters.</text>
      <paragraph num="(1)">
        <text>The license number of the current natural gas fitter shall be displayed on all documents used by any person holding themselves out to the public as providing natural gas services.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Each vehicle that advertises natural gas services shall display the words “MD Licensed Natural Gas Fitter” and the license number of the current natural gas fitter on both sides of the vehicle.</text>
      </paragraph>
    </paragraph>
    <paragraph num="D.">
      <text>Requirements for Propane Gas Fitters.</text>
      <paragraph num="(1)">
        <text>The license number of the current propane gas fitter shall be displayed on all documents used by any persons holding themselves out to the public as providing propane gas services.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Each vehicle that advertises propane gas services shall display the words “MD Certified Propane Gas Fitter” and the license number of the current propane gas fitter on both sides of the vehicle.</text>
      </paragraph>
    </paragraph>
    <paragraph num="E.">
      <text>Additional Requirements for Licensees and Certificate Holders.</text>
      <paragraph num="(1)">
        <text>Each vehicle that advertises plumbing, natural gas, or propane gas services shall display the information required by this regulation on both sides of the vehicle. Display of wording shall be not less than 1-1/2 inches in height.</text>
      </paragraph>
      <paragraph num="(2)">
        <text>Each printed, audio, video, or computerized advertisement of any type, including all estimate forms, contract forms, and final statements of payment, shall clearly contain the words “MD Licensed Plumber”, “MD Licensed Natural Gas Fitter”, or “MD Certified Propane Gas Fitter” and the license number as required by §§B(2), C(2), and D(2) of this regulation.</text>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".10" heading="Qualifications for Plumbing Inspectors.">
    <paragraph num="A.">
      <text>Plumbing inspectors hired by the State, a county, or a local government after October 1, 1988, shall meet minimum standards that are established by the county or local government in consultation with the State Board, or, if there is no standard established by the county or local government, the minimum standards established by the State Board. The minimum standards established by the State Board are as follows:</text>
      <paragraph num="(1)">
        <text>The plumbing inspector shall be a licensed master or journey plumber;</text>
      </paragraph>
      <paragraph num="(2)">
        <text>The plumbing inspector shall:</text>
        <paragraph num="(a)">
          <text>Have at least 4 years experience as an inspector or craftsman in a building and construction trade, and</text>
        </paragraph>
        <paragraph num="(b)">
          <text>Pass a written examination prepared and administered by the State Board, or prepared and administered by the county or local government, provided that the examination is approved by the State Board, and certified copies of all results are provided to the State Board.</text>
        </paragraph>
      </paragraph>
    </paragraph>
    <paragraph num="B.">
      <text>Each plumbing inspector shall:</text>
      <paragraph num="(1)">
        <text>Attend, at least once each year, continuing education pursuant to Business Occupations and Professions Article, §12-503(a)(1), Annotated Code of Maryland, to be conducted by the State Board, or a course which is consistent in content with the State Board's course and which is conducted by a county or local government; and</text>
      </paragraph>
      <paragraph num="(2)">
        <text>In accordance with Business Occupations and Professions Article, §12-503(a)(1), Annotated Code of Maryland, obtain a cumulative 8 hours of qualifying continuing education each calendar year.</text>
      </paragraph>
    </paragraph>
  </regulation>
  <regulation prefix="Regulation" num=".11" heading="Passing Grade for License and Certificate Examinations.">
    <text>In accordance with Business Occupations and Professions Article, §12-304(d)(1), Annotated Code of Maryland, and as set forth in Regulations .03B(3) and .05 of this chapter, an applicant for any license or certificate issued by the Board shall attain a passing score of 70 to qualify for the license or certificate.</text>
  </regulation>
  <annotations>
    <annotation type="Authority">Business Occupations and Professions Article, §§12-205, 12-207, 12-302(d), (e), (g)(2), and (h)(3), 12-304(d)(1), and 12-503(a), Annotated Code of Maryland</annotation>
    <annotation type="History" subtype="Administrative History">Effective date: 1971</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .02, .13 amended effective January 7, 1976 (3:1 Md. R. 41)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .07 amended effective February 8, 1980 (7:3 Md. R. 263)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .15 amended effective May 26, 1976 (3:11 Md. R. 592)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .17 amended effective December 24, 1975 (2:29 Md. R. 1735)</annotation>
    <annotation type="History" subtype="Administrative History">Chapter revised effective October 26, 1981 (8:21 Md. R. 1706)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .04 amended effective August 12, 1985 (12:16 Md. R. 1605)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .04A amended effective April 21, 1986 (13:8 Md. R. 898)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .05 amended effective April 21, 1986 (13:8 Md. R. 898)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .05D adopted effective March 25, 1985 (12:6 Md. R. 595)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .06 amended as an emergency provision effective July 1, 1983 (10:14 Md. R. 1257); adopted permanently effective September 26, 1983 (10:19 Md. R. 1690)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .06 amended effective April 21, 1986 (13:8 Md. R. 898)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .06G adopted effective March 25, 1985 (12:6 Md. R. 595)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .10A amended effective February 13, 1984 (11:3 Md. R. 199)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .12A amended effective August 12, 1985 (12:16 Md. R. 1605)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .12D adopted effective July 28, 1986 (13:15 Md. R. 1734)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .15 adopted effective June 26, 1989 (16:12 Md. R. 1335)</annotation>
    <annotation type="History" subtype="Administrative History">Chapter revised effective June 22, 1992 (19:12 Md. R. 1133)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 adopted as an emergency provision effective March 1, 1995 (22:6 Md. R. 471); emergency status expired September 1, 1995</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 adopted effective March 25, 1996 (23:6 Md. R. 475)</annotation>
    <annotation type="History" subtype="Administrative History">Chapter recodified from COMAR 09.20.26 to COMAR 09.20.02 effective October 20, 1997 (24:21 Md. R. 1448)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .02 amended effective May 22, 2017 (44:10 Md. R. 472)</annotation>
    <annotation type="History" subtype="Administrative History">Regulations .03B amended effective October 20, 1997 (24:21 Md. R. 1448); June 17, 2019 (46:12 Md. R. 536)</annotation>
    <annotation type="History" subtype="Administrative History">Regulations .04E amended effective October 20, 1997 (24:21 Md. R. 1448)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .05 amended effective June 17, 2019 (46:12 Md. R. 536)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .06A amended effective June 24, 2002 (29:12 Md. R. 927)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .07A amended effective May 22, 2017 (44:10 Md. R. 472)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .09 amended effective November 29, 1999 (26:24 Md. R. 1857); March 18, 2002 (29:5 Md. R. 503)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .10B amended effective February 4, 2013 (40:2 Md. R. 72)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 amended as an emergency provision effective December 1, 2005 (32:26 Md. R. 1993); emergency status expired April 28, 2006</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 amended effective July 3, 2006 (33:13 Md. R. 1063)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 repealed effective May 22, 2017 (44:10 Md. R. 472)</annotation>
    <annotation type="History" subtype="Administrative History">Regulation .11 adopted effective June 17, 2019 (46:12 Md. R. 536)</annotation>
  </annotations>
</chapter>