10 CSR 23-1.010 Definitions PURPOSE: This rule defines the words used in the text of the rules promulgated to implement the Water Well Drillers Law.

(1) Abandoned well as defined in section 256.603, RSMo means a well shall be deemed abandoned when it is in such a state of disrepair that continued use for the purpose of thermal recovery or obtaining groundwater is impractical and the well has not been in use for a period of two (2) years or more. The term abandoned well includes a test hole or a monitoring well which was drilled in the exploration for minerals or for geological, water quality or hydrologic data from the time that it is no longer used for exploratory purposes and that has not been plugged in accordance with rules pursuant to sections 256.600-256.640, RSMo.

(2) Act means Missouri Water Well Drillers Law, sections 256.600-256.640, RSMo, under which these rules are promulgated.

(3) Annular space means the space between two (2)-cylindrical objects one (1) of which surrounds the other, such as the space between a drillhole and a casing pipe or between a casing pipe and liner pipe.

(4) Applicant means any person who applies for a well, heat pump, monitoring well or pump installation contractor permit pursuant to the law.

(5) Application for permit means the application submitted by an applicant.

(6) Aquifer means water-bearing geological material that transmits water in sufficient quantities to supply a well.

(7) Bedrock means competent rock that is not weathered or fractured.

(8) Bentonite means any type of sodium bentonitic clay used in well construction, or plugging of wells, which swells or expands when water is added.

(9) Board as defined in section 256.603, RSMo means the body created in section 256.605, RSMo.

(10) Casing means an impervious durable pipe placed in a well to prevent the walls from caving and to help seal off surface drainage or undesirable water, gas or other fluids to prevent their entering the well.

(11) Casing Point Request form means a form that is supplied by the division and contains name and address information, type of well requested to be drilled, location information and other necessary information. The division uses the form to establish construction requirements, proposed total depth of well and proposed yield information for specific types of wells.

(12) Certification report as defined in section 256.603, RSMo means a form to be sent to the division upon completion of any well which shows the location, static water level, total depth, initial pumpage, hole size, casing size and length, and name of well owner.

(13) Cesspool means an underground pit or container into which raw household sewage or other untreated liquid waste is discharged and from which the liquid seeps into the surrounding soil or is otherwise removed.

(14) Chlorination (disinfection) means the use of a chlorine solution to disinfect or sterilize wells, pumps, storage tanks or piping systems. Chlorine is an oxidizing disinfectant that kills bacteria on contact.

(15) Completion date means the date that the construction of a new well or repair of an existing well or the installation of a pump or the plugging of an abandoned well is completed. It shall not mean the date that payment is received for services provided.

(16) Construction foundation data means wells drilled to obtain construction foundation data and wells drilled in the construction phase of piers, shafts, caissons, mini-piles, soil and rock anchors, soil and rock grouting procedures on surface water containment structures and other construction sites that utilize drilling within the structure to be built. The well or drill hole must be excavated and incorporated into the construction project or plugged full-length as a part of the construction project.

(17) Cuttings means geologic material displaced from the drill hole during drilling.

(18) Director means the director of the Division of Geology and Land Survey, or authorized representatives, who shall carry out the administrative functions of these rules on behalf of the division.

(19) Division, as defined in section 256.603, RSMo, means the Division of Geology and Land Survey.

(20) Driller's log, as defined in section 256.603, RSMo, means a record accurately kept at the time of drilling showing the depth, thickness, character of the different strata penetrated, location of water-bearing strata, depth, size and character of casing installed, together with any other data or information required on the certification report forms.

(21) Drive shoe means the fittings placed at the bottom of the permanent metal casing which enables the driller to more efficiently drive the casing into solid rock.

(22) Established ground surface means the actual finished grade of the surface of the ground at the site of the well.

(23) Examination, as defined in section 256.603, RSMo, means as assessment of professional competency administered to applicants.

(24) Geological material means all materials penetrated in drilling a well.

(A) Alluvium is a general term for clay, silt, sand, gravel or similar unconsolidated material deposited during comparative recent geologic time by a stream or body of running water as a sorted or semisorted sedimentary deposit.

(B) Dolomite means rock which contains at least fifty percent (50%) or more magnesium carbonates and has a weak reaction with a ten percent (10%) hydrochloric acid (HCl) solution.

(C) Glacial drift (unconsolidated) means a general term applied to all rock material (clay, sand, gravel and boulders) transported by a glacier and deposited directly by or from the ice or by running water emanating from the glacier.

(D) Glacial outwash means a stratified sand and gravel removed or washed out from a glacier by meltwater streams and deposited in front of or beyond the terminal moraine or the margin of an active glacier.

(E) Limestone means rock which contains fifty percent (50%) or more calcium carbonate and has strong reaction with a ten percent (10%) hydrochloric acid (HCl) solution.

(F) Residuum means a product formed from the in-place disintegration and decomposition of bedrock.

(G) Sandstone means cemented or otherwise compacted sediment composed predominately of sand.

(H) Shale means a laminated rock consisting predominantly of clay-sized particles.

(25) Grout means cement slurry, sixteen (16) lbs/gal density-one (1) bag Type I cement to six (6) gallons water mix, Type II-V cement mix to manufacturers' specification, high solids twenty percent (20%) or more solids, bentonite slurry, sodium bentonite chips or pellets or any other commercially available grout approved by the division.

(26) Heat exchange or heat pump well means any well constructed to utilize the heat exchange properties of either groundwater or of geologic material penetrated in the well.

(27) Heat pump installation contractor, as defined in section 256.603, RSMo, means any person, including owner, operator or drilling supervisor who engages for compensation in the drilling, boring, coring or construction of any well in the state for extracting thermal energy.

(28) Lakes are defined as the major reservoirs in Missouri. They are considered a sensitive area under these rules. They include: Clearwater Lake, Lake of the Ozarks, Stockton Lake, Pomme de Terre Lake, Bull Shoals Lake, Norfolk Lake, Table Rock Lake, Lake Wappapello and Truman Reservoir (see map following 10 CSR 23-6).

(29) Liner means plastic or steel pipe which is smaller in diameter than the casing and used to solve problems encountered in deeper geologic formations or to reconstruct a well.

(30) Major reconstruction means the alteration or repair of any well that changes the original specifications or casing depths or total depth of the well; for example: liners, packers or deepening of well or extension of casing above finished grade.

(31) Monitoring well installation contractor, as defined in section 256.603, RSMo, means any person, including owner, operator or drilling supervisor who engages for compensation in the drilling, boring, coring or construction of any well in this state which is drilled for geologic data, water quality or hydrologic data.

(32) Packer in these rules means a rubber or neoprene collar (boot) installed on casing or liner to hold the grout material in the annular space and to help affect a seal of the casing.

(33) Permitted well driller, as defined in section 256.603, RSMo, means any person who holds a permit issued pursuant to the provisions of sections 256.600-256.640, RSMo.

(34) Permittee means a person who is permitted as a well, heat pump, monitoring well or pump installation contractor pursuant to the provision of the law and these rules.

(35) Person, as defined in section 256.603, RSMo, means any individual, whether or not connected with a firm, partnership, association, corporation or any other group or combination acting as a unit.

(36) Pitless adapter means a device for above or below ground discharge designed for attachment to one (1) or more openings through a well casing and constructed so as to prevent the entrance of contaminants into the well.

(37) Pitless unit means an assembly with cap which extends from the upper end of the well casing to above grade and is constructed so as to prevent the entrance of contaminants into the well.

(38) Plastic means a thermoplastic pipe or casing material composed of either polyvinyl chloride (PVC) or acrylonitrile-butadienestyrene (ABS).

(39) Point of entry means the point when the main water supply line hooks up to the central plumbing in a building.

(40) Potable water means water which is safe for human consumption in that it is free from impurities in amounts sufficient to cause disease or harmful physiological effects.

(41) Pressure grout refers to the process of applying grout material under pressure to the annular space of a well for the purpose of sealing it and thus preventing vertical movement of fluids through the annular space. Grout must be introduced from the bottom of the annular space.

(42) Pressure tank or hydropneumatic tank means a closed water storage container constructed to operate under a designed pressure rating to modulate the water system pressure within a selected pressure range.

(43) Priming means the first filling of a pump with water and action of starting the flow in a pump.

(44) Pump installation contractor, as defined in section 256.603, RSMo, means any person, firm or corporation engaged in the business of installing or repairing pumps and pumping equipment.

(45) Pump installation machine or service rig means any vehicle, hoist or machine used to install or remove pumps or liners from wells.

(46) Pumps and pumping equipment means materials used or intended for use in withdrawing or obtaining groundwater for any use, except as applies to sampling, development, maintenance or testing equipment used or inserted into monitoring wells including, without limitation, seals and other safeguards to protect the water from pollution and together with plumbing fittings, electric wiring and accessories, and controls provide sanitary water storage facilities. Installation of pumps and pumping equipment means the selection of and the procedure employed in the placement and preparation for operation of pumps and pumping equipment. This includes the construction involved in making entrance to the well and into the building served, water distribution lines from the well through the pressure tank and water treatment equipment, to the main point of entry and establishing proper seals and other safeguards to protect groundwater from pollution, including repairs to existing installations.

(47) Registration report, as defined in section 256.603, RSMo, means a form to be sent to the division upon completion of plugging of an abandoned well, raising casings, lining wells, deepening of wells, major repairs and alterations and jetted wells.

(48) Scope. For the purposes of these rules promulgated pursuant to Missouri Water Well Drillers Act, section 256.600, RSMo, the terms defined in this part have the meanings given them, except where the context clearly indicates otherwise.

(49) Screen means a filtering device used to keep sediment from entering a well.

(50) Septic tank means a watertight tank of durable materials through which sewage flows very slowly and in which solids separate from liquid to be decomposed or broken down by bacterial action.

(51) Service connection means a supply line from the well that is connected to one (1) single family dwelling or in a farming application it shall include all additional water hookups for the outbuildings. If the outbuildings are dwellings for persons or additional businesses then they would be considered additional service connections.

(52) Sewage means the water carried waste products from residences, public buildings, including the excrementitious or other discharges from the bodies of human beings or animals.

(53) Sewer means a pipe or conduit carrying sewage or into which sewage may back up.

(54) Site means a plot of land on which wells are drilled or are going to be drilled that is not more than forty (40) acres and is owned by a person as defined in section 256.603, RSMo. If larger sites exist, contact the division for reporting requirements.

(55) Static water level means the distance measured from the established ground surface to the water surface in a well neither being pumped, nor under the influence of pumping nor flowing under artesian pressure.

(56) Subsurface disposal field, seepage bed, drainfield, percolation system or tile absorption field means a system composed of open jointed tile, plastic lines or lines composed of other material buried in stones and shallow trenches or beds through which septic tank effluent is disposed. The septic tank effluent is applied to land by distribution beneath the surface through the open jointed lines.

(57) Suction line means a pipe or line connected to the inlet side of a pump or pumping equipment or any connection to a well casing that may conduct nonsystem water into the well because of negative pressures.

58) Tremie pipe means a small diameter conductor pipe, hose or tubing used in the down hole placement of well construction material.

(59) Upper termination of the well casing means a point twelve inches (12") or greater above the finished ground surface.

(60) Variance means any modification to the application of these rules. A variance may be applied for through the procedure set out in 10 CSR 23-1.040 of these rules.

(61) Water varieties mean-

(A) Groundwater means the water in subsurface zone of saturation. The water that supplies springs and wells is groundwater; and

(B) Surface water means water that rests or flows on the surface of the ground.

(62) Well, as defined in section 256.603, RSMo, means an excavation that is drilled, cored, bored, washed, driven, dug, jetted, trenched or otherwise constructed when the intended use of the excavation is for the acquisition of groundwater supply, for monitoring, thermal exchange or for exploration for minerals or geologic or hydrologic data; but does not include a cistern, an excavation made for the purpose of obtaining or for prospecting for oil or natural gas, or for construction foundation data, dewatering of construction sites or dewatering of existing structures, observation wells used as a part of an underground storage tank leak detection system of a minimal depth, as determined by the board by rule, or for inserting media to repressure oil or natural gas-bearing formations.

(63) Well certification means the well certification report form and certification fee have been submitted to the division, the form has been reviewed by the division to verify the well has been constructed in accordance with the rules, and the division has assigned a well certification number to the well. The well certification number will be sent to the well owner by the division.

(64) Well drilling machine or service rig means any machine or device such as a cable tool, rotary, hollow rod auger, and the like used for construction of wells or a hoist, machine or vehicle used in well service which involves the modification to the well casing, screen depth or diameter below the upper termination of the well casing. This excludes trenching machines in heat pump applications.

(65) Well installation contractor, as defined in section 256.603, RSMo, means any person, including owner, operator and drilling supervisor who engages for compensation in the drilling, boring, coring or construction of any well in this state. The term, however, shall not include any person who drills, bores, cores or constructs a water well on his/her own property for his/her own use or a person who assists in the construction of a water well under the direct supervision of a permitted well installation contractor and is not primarily responsible for drilling operations.

(66) Well owner, as defined in section 256.603, RSMo, means any person or corporation who is the party responsible for having a well drilled and whose name appears on the well registration or certification form.

(67) Well registration means the registration report form and registration fee have been submitted to the division, the form has been reviewed by the division which documents certain types of activities according to the requirements. If the documented activities meet the requirements then a registration number is assigned by the division and sent to the well owner.

(68) Well seal means a device or method used to protect a well casing or water system from the entrance of any external pollutant at the point of entrance into the casing.

(69) Well vent means an outlet at the upper terminal of a well casing to allow equalization of air pressure in the well and escape of toxic or flammable gasses when present.

(70) Yield or production means the quantity of water per unit of time which may flow or be pumped from a well under specified conditions.

AUTHORITY: sections 256.603 and 256.626, RSMo (1994).* Original rule filed April 2, 1987, effective July 27, 1987. Emergency amendment filed Nov. 16, 1993, effective Dec. 11, 1993, expired April 9, 1994. Amended: Filed Aug. 17, 1993, effective March 10, 1994. Amended: Filed July 13, 1994, effective Jan. 29, 1995. Amended: Filed Nov. 1, 1995, effective June 30, 1996.
*Original authority 1985, amended 1991.

MO Dept. of Natural Resources: CODE OF STATE REGULATIONS - Rebecca McDowell Cook (5/31/96) Secretary of State

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