Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 1 - GENERAL PROVISIONS › Section R. 325.10103 - Definitions; C

Current through Vol. 24-12, July 15, 2024
Rule 103. As used in these rules:
(a) "C" in "CT calculation" means the
				  residual disinfectant concentration measured in milligrams per liter in a
				  representative sample of water.
(b)
				  "Cartridge filters" means pressure-driven separation devices that remove
				  particulate matter larger than 1 micrometer using an engineered porous
				  filtration media. They are typically constructed as rigid or semi-rigid,
				  self-supporting filter elements housed in pressure vessels in which flow is
				  from the outside of the cartridge to the inside.
(c) "Casing" means a durable pipe that is
				  placed in a well to prevent the soil from caving in and to seal off surface
				  drainage or undesirable water, gases, contaminants, or other fluids and prevent
				  them from entering the well and the aquifer supplying the well.
(d) "Casing vent" means an outlet at the
				  upper terminal of a well casing which provides atmospheric pressure in the well
				  and which allows the escape of gases when present.
(e) "Certificate" means a document that is
				  issued by the department to a person who meets the qualification requirements
				  for operating a waterworks system or a portion of the waterworks
				  system.
(f) "Certified operator"
				  means an operator who holds a certificate.
(g) "Clean compliance history" means, for the
				  purposes of the total coliform provisions of R 325.10704a to R 325.10704k, a
				  record of no MCL violations under
				  R 325.10602; no monitoring
				  violations under
				  R
				  325.10704 to
				  R 325.10709; and no coliform
				  treatment technique trigger exceedances or treatment technique violations under
				  R 325.10704a to R 325.10704k.
(h)
				  "Combined distribution system" means the interconnected distribution system
				  consisting of the distribution systems of wholesale supplies and of the
				  consecutive supplies that receive finished water.
(i) "Community supply" or "community water
				  supply" or "community water system" means a public water supply that provides
				  year-round service to not fewer than 15 living units or that regularly provides
				  year-round service to not fewer than 25 residents.
(j) "Complete treatment" means a series of
				  processes, including disinfection and filtration, to treat surface water or
				  ground water under the direct influence of surface water, or to treat ground
				  water not under the direct influence of surface water that uses precipitative
				  softening, to produce a finished water meeting state drinking water
				  standards.
(k) "Compliance cycle"
				  means the 9-year calendar year cycle during which public water supplies are
				  required to monitor. Each compliance cycle consists of three 3-year compliance
				  periods. The first calendar year cycle begins January 1, 1993, and ends
				  December 31, 2001; the second begins January 1, 2002, and ends December 31,
				  2010; the third begins January 1, 2011, and ends December 31, 2019.
(l) "Compliance period" means a 3-year
				  calendar year period within a compliance cycle. Each compliance cycle has three
				  3-year compliance periods. Within the first compliance cycle, the first
				  compliance period runs from January 1, 1993, to December 31, 1995; the second
				  from January 1, 1996, to December 31, 1998; the third from January 1, 1999, to
				  December 31, 2001.
(m)
				  "Comprehensive performance evaluation (CPE)" means a thorough review and
				  analysis of a treatment plant's performance-based capabilities and associated
				  administrative, operation, and maintenance practices. It is conducted to
				  identify factors that may be adversely impacting a plant's capability to
				  achieve compliance and emphasizes approaches that can be implemented without
				  significant capital improvements. For purposes of compliance, the comprehensive
				  performance evaluation shall consist of at least all of the following
				  components:
(i) Assessment of plant
				  performance.
(ii) Evaluation of
				  major unit processes.
(iii)
				  Identification and prioritization of performance limiting factors.
(iv) Assessment of the applicability of
				  comprehensive technical assistance.
(v) Preparation of a CPE report.