7 Colo. Code Regs. § 1101-14-1-5
Terms in these regulations shall have the same definitions as those found in Articles 20 and 20.5 of Title 8 of the Colorado Revised Statutes. In addition, unless the context otherwise requires:
"Abandoned tank" means an underground or aboveground petroleum storage tank that the current tank owner or operator or current property owner did not install, has never operated or leased to another for operation, and had no reason to know was present on the site at the time of site acquisition.
"Aboveground storage tank" (AST) means any one or a combination of containers, vessels, and enclosures, including structures and appurtenances connected to them, constructed of non-earthen materials, including but not limited to concrete, steel, or plastic, which provide structural support, used to contain or dispense fuel products and the volume of which, including the pipes connected thereto, is ninety percent or more above the surface of the ground, is not permanently closed, and except those exempted in statute and these regulations.
"Aboveground storage tank (AST) system" means all ASTs at a facility, all the connected piping and ancillary equipment, all loading facilities, and all containment systems if applicable.
"Alternative fuel" means a motor fuel that combines petroleum-based fuel products with renewable fuels. "Ancillary equipment" means any devices including, but not limited to, such devices as piping, fittings, flanges, valves, and pumps used to distribute, meter, or control the flow of regulated substances to and from an UST.
"ASTM International (ASTM)" means an international voluntary consensus standards organization formed for the development of standards on characteristics and performance of materials, products, systems, services, and the promotion of related knowledge.
"Atmospheric tank" is a storage tank that has been designed to operate at pressures from atmospheric through 0.5 psig (760 mm Hg through 780 mm Hg) measured at the top of the tank.
"Bodily injury" shall have the meaning given to this term by applicable Colorado state law; however, this term shall not include those liabilities which, consistent with standard insurance industry practices, are excluded from coverage in liability insurance policies for bodily injury.
"Bulk plant" is that portion of a property where liquids are received by tank vessel, pipelines, tank car, or tank vehicle and are stored or blended in bulk for the purpose of distributing such liquids by tank vessel, pipeline, tank car, tank vehicle, portable tank or container. [Note: A bulk plant is normally a wholesale fuel facility where petroleum products are stored prior to resale or redistribution.]
"Calendar days" means consecutive days including weekends and nationally recognized holidays.
"Cathodic protection" is a technique to prevent corrosion of a metal surface by making that surface the cathode of an electrochemical cell. For example, an UST or AST system can be cathodically protected through the application of either galvanic anodes or impressed current.
"Cathodic protection tester" means a person who can demonstrate an understanding of the principles and measurements of all common types of cathodic protection systems as applied to buried or submerged metal piping and UST and AST systems. At a minimum, such persons must have education and experience in soil resistivity, stray current, structure-to-soil potential, and component electrical isolation measurements of buried metal piping and UST and AST systems.
"Certificate of conformance" means a document issued by the national type evaluation program constituting evidence of conformance of a weighing and measuring device with the requirements of the National Institute of Standards and Technology (NIST) Handbook 44.
"Certificate of Eligibility" is a document that entitles the bearer to participate in the Fund without further determination of compliance by the Director, if that bearer is a mortgagee who has acquired, by foreclosure or receipt of a deed in lieu of foreclosure, property on which the petroleum storage tanks covered by the certificate are located.
"CFR" Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government
"Change in service" means continued use of an UST or AST to store a non-regulated substance.
"Chemicals of concern" (COCs) are chemical compounds that have been identified for evaluation due to specific risks to human health and/or the environment.
"Committee" means the Petroleum Storage Tank Committee created in C.R.S. § 8-20.5-104.
"Compatible" means the ability of two or more substances to maintain their respective physical and chemical properties upon contact with one another for the design life of the tank system under conditions likely to be encountered.
"Connected piping" means all piping including valves, elbows, joints, flanges, and flexible connectors attached to a tank system through which regulated substances flow. For the purpose of determining how much piping is connected to any individual AST or UST system, the piping that joins two systems should be allocated equally between them.
"Containment sump" means a liquid-tight container that protects the environment by containing leaks and spills of regulated substances from piping, dispensers, pumps, and related components in the containment area. Containment sumps may be single-walled or secondarily contained and located at the top of tank (tank top or submersible turbine pump sump), underneath the dispenser (under-dispenser containment sump), or at other points in the piping run (transition or intermediate sump).
"Contamination" means the presence of a regulated substance at or below ground that originated from a regulated storage tank system.
"Corrosion expert" means a person who, by reason of thorough knowledge of the physical sciences and the principles of engineering and mathematics acquired by professional education and related practical experience, is qualified to engage in the practice of corrosion control on buried or submerged metal piping systems and metal tanks. Such a person must be accredited or certified as being qualified by the National Association of Corrosion Engineers or be a registered professional engineer who has certification or licensing that includes education and experience in corrosion control of buried or submerged metal piping systems and metal tanks.
"Dielectric material" means a material that does not conduct direct electrical current. Dielectric coatings are used to electrically isolate systems from the surrounding soils. Dielectric bushings are used to electrically isolate portions of the system (e.g., tank from piping).
"Dispenser" means equipment that dispenses regulated substances from the storage tank system.
"Dispenser system" means the dispenser and the equipment necessary to connect the dispenser to the storage tank system.
"Director" means the Director of the Division of Oil and Public Safety of the Colorado Department of Labor and Employment or any designees thereof which may include certain employees of the Division of Oil and Public Safety of the Colorado Department of Labor and Employment or other persons.
"Downgradient" is in the direction of maximum decreasing static head.
"Electrical equipment" means underground equipment that contains dielectric fluid that is necessary for the operation of equipment such as transformers and buried electrical cable.
"Electrolyte" means the soil or liquid adjacent to and in contact with the systems, including the moisture and other chemicals contained in it; the electrically conductive material between the tank and its environment;
"Excavation zone" means the volume containing the UST system and backfill material bounded by the ground surface, walls, and floor of the pit and trenches into which the UST system is placed at the time of installation.
"Exposure pathway" is the course that a chemical of concern takes from a source area to a point of exposure. An exposure pathway describes a unique mechanism by which a person or sensitive environment is assumed to be exposed to a chemical of concern. Each exposure pathway includes a source, an exposure route, and a point of exposure. If the exposure point differs from the source, transport or exposure media (e.g., air, water, dust) are also included. All exposure pathways are assumed to be complete unless an exposure pathway elimination criteria is demonstrated. Exposure pathway elimination criteria are listed in the Owner/Operator Guidance Document.
"Farm tank" is a tank located on a tract of land devoted to the production of crops or raising animals, including fish, and associated residences and improvements. A farm tank must be located on the farm property. "Farm" includes fish hatcheries, rangeland, and nurseries with growing operations.
"Financial reporting year" means the latest consecutive twelve-month period for which any report used to support a financial test is prepared. "Financial reporting year" may thus comprise a fiscal or a calendar year period.
"Fire resistant tank" is an atmospheric single or double-walled AST with thermal insulation that has been evaluated for resistance to physical damage and for limiting the heat transferred to the primary tank when exposed to a hydrocarbon pool fire, and is listed in accordance with UL 2080 or an equivalent test procedure..
"Flow-through process tank" is a tank that forms an integral part of a production process through which there is a steady, variable, recurring, or intermittent flow of materials during the operation of the process. Flow-through process tanks do not include tanks used for the storage of materials prior to their introduction into the production process or for the storage of finished products or by-products from the production process.
"Fund" means the Petroleum Storage Tank Fund (PSTF) created in C.R.S. § 8-20.5-103.
"Gathering lines" means any pipeline, equipment, facility, or building used in the transportation of oil or gas during oil or gas production or gathering operations.
"Good Engineering Practice", "Good Engineering Standards", and "Nationally Recognized Standard" means in accordance with standards developed by nationally recognized laboratories or associations such as: Underwriters Laboratory (U.L.), American National Standards Institute (ANSI), American Petroleum Institute (API), American Society for Testing and Materials (ASTM), American Society of Mechanical Engineers (ASME), Steel Tank Institute (STI), Association for Materials Protection and Performance (AMPP), or the National Fire Protection Association (NFPA).
"Hazardous substance UST system" means an UST system that contains a hazardous substance defined in section 101(14) of the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (but not including any substance regulated as a hazardous waste under subtitle C) or any mixture of such substances and petroleum, and which is not a petroleum UST system.
"Heating oil" means petroleum that is No. 1, No. 2, No. 4--light, No. 4--heavy, No. 5--light, No. 5--heavy, and No. 6 technical grades of fuel oil; other residual fuel oils (including Navy Special Fuel Oil and Bunker C); and other fuels when used as substitutes for one of these fuel oils. Heating oil is typically used in the operation of heating equipment, boilers, or furnaces.
"Hydraulic conductivity" is the coefficient of proportionality describing the rate at which water can move through a permeable medium.
"Hydraulic gradient" is the slope of the water table in the direction of groundwater flow. This slope is typically expressed as a unit change in water table elevation per unit horizontal distance (e.g. ft/ft).
"Hydraulic lift tank" means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.
"Imminent threat to human health or safety or the environment" means a condition that creates a substantial probability of harm, when the probability and potential extent of harm make it reasonably necessary to take immediate action to prevent, reduce, or mitigate the actual or potential damages to human health or safety or the environment.
"Installation of a new motor fuel dispenser system" means the installation of a new motor fuel dispenser and the equipment necessary to connect the dispenser to the system. It does not mean the installation of a motor fuel dispenser installed separately from the equipment needed to connect the dispenser to the tank system. For purposes of these rules, the equipment necessary to connect the motor fuel dispenser to the tank system may include check valves, shear valves, unburied risers or flexible connectors, or other transitional components that are beneath the dispenser and connect the dispenser to the underground piping.
"Insurer" or "qualified insurer" means an insurer or group that is authorized to transact the business of insurance or authorized to provide insurance as an excess or surplus lines insurer in Colorado.
"Light non-aqueous phase liquid" (LNAPL) refers to a regulated organic liquid, such as gasoline or diesel fuel, that exists as a separate phase and is less dense than water and immiscible in water.
"Liquid" is any material that has a fluidity greater than that of 300 penetration asphalt when tested in accordance with ASTM Standard D5, Test for Penetration for Bituminous Materials. When not otherwise identified, the term "liquid" shall mean both flammable and combustible liquids.
[Note 1: Class I flammable liquids include all grades of Gasoline, and most motor fuels blended using alcohol and MTBE (methyl-tertiary-butyl-ether).]
[Note 2: Class II combustible liquids include #1 and #2 Diesel Fuels, #1 and #2 Heating Oil, Kerosene, and Jet-A grade Jet fuel.]
[Note 3: Class III combustible liquids include most Lubricating Oils, and Heavy Fuel oils.]
"Liquid, combustible" is a liquid having a flash point at or above 100°F (37.8°C). Combustible Liquids are classified as follows:
"Liquid, flammable" is a liquid having a flash point below 100°F (37.8°C) and having a Reid vapor pressure not exceeding 40 psia (2068 mmHg) at 100°F (37.8°C). Flammable Liquids are classified as Class I liquids. Class I liquids are further subclassified as follows:
"Liquid trap" means sumps, well cellars, and other traps used in association with oil and gas production, gathering, and extraction operations (including gas production plants), for the purpose of collecting oil, water, and other liquids. These liquid traps may temporarily collect liquids for subsequent disposition or reinjection into a production or pipeline stream, or may collect and separate liquids from a gas stream.
"Marine service station" is that portion of a property where liquids used as fuels are stored and dispensed from fixed equipment on shore, piers, wharves, or floating docks into the fuel tanks of self-propelled craft, including all facilities used in connection therewith.
"Media" are intervening substances through which something is transmitted or carried (e.g. soil, water, or air).
"Mortgagee" refers to a mortgagee or the holder of evidence of debt secured by a mortgage or deed of trust.
"Motor fuel" means petroleum or a petroleum-based substance that is motor gasoline, aviation gasoline, No. 1 or No. 2 diesel fuel, fuel products as defined in C.R.S. § 8-20.5-101(6), or any grade of gasohol, and is typically used in the operation of a motor engine.
"Motor fuel dispensing facility" means that portion of a property where motor fuels are stored and dispensed from fixed equipment into the fuel tanks of motor vehicles or marine craft or into approved containers, including all equipment used in connection therewith.
"Net worth" means the assets that remain after deducting liabilities; such assets do not include intangibles such as goodwill and rights to patents or royalties. For purposes of this definition, "assets" means all existing economic benefits obtained or controlled by an owner/operator.
"Noncommercial purposes" with respect to motor fuel at farms and residences means not for resale.
"On Demand Mobile Fueling" means retail dispensing of Class I and Class II liquids from a mobile fueling vehicle complying with NFPA 385, with chassis-mounted tanks that do not exceed an aggregate capacity of 1200 gallons, or a vehicle with chassis-mounted tanks, each of which does not exceed 110 gallons, and that does not exceed an aggregate capacity of 1200 gallons, or a vehicle that carries a maximum of 60 gallons of motor fuel in listed metal safety cans not exceeding 5.3 gallons in capacity, into the fuel tank of a motor vehicle.
"Operational life" refers to the period beginning when installation of the tank system has commenced until the time the tank system is properly closed.
"Operator" means any person in control of, or having responsibility for the daily operation of an underground or aboveground storage tank system.
"Orphaned tank" means an underground storage tank that is owned or operated by an unidentified owner or is no longer in use and was not closed, and the property has changed ownership prior to December 22, 1988, and such property is no longer used to dispense fuels.
"Out of service" means that the tank is not being operated in accordance with its intended purpose.
"Overfill" is a release that occurs when a tank is filled beyond its capacity, resulting in a discharge of the regulated substance to the environment.
"Owner" means:
"Owner(s)/operator(s) or O/O" means that the task to which this phrase is attached may be performed by either the owner or the operator. If neither the owner nor the operator performs the task, both shall be in violation of these regulations. Duplication of the task is not required.
"Person" means an individual, trust, firm, joint stock company, federal agency, corporation, state, municipality, commission, political subdivision of a state, or any interstate body. "Person" also includes a consortium, a joint venture, a commercial entity, and the United States Government.
"Petroleum" means crude oil or any fraction thereof that is liquid at standard conditions of temperature and pressure (60 degrees Fahrenheit and 14.7 pounds per square inch absolute).
"Pipe" or "Piping" means a hollow cylinder or tubular conduit that is constructed of non-earthen materials and in accordance with NFPA or other nationally recognized piping standards for petroleum storage tanks. Piping routinely contains and conveys regulated substances from the underground tank(s) to the dispenser(s) or other end-use equipment. Such piping includes any elbows, couplings, unions, valves, or other in-line fixtures that contain and convey regulated substances from the underground tank(s) to the dispenser(s). This definition does not include vent, vapor recovery, or fill lines not connected to remote fills.
"Pipeline facilities (including gathering lines)" are new and existing pipe rights-of-way and any associated equipment, facilities, or buildings.
"Point of exposure" (POE) is the location at which a person or sensitive environment is assumed to be exposed to a chemical of concern. POEs for benzene, toluene, ethylbenzene, total xylene, and naphthalene are: property boundaries, surficial soils, subsurface utilities, structures, groundwater wells, surface water, and sensitive environments. POEs for MTBE are: water supply wells that are used for human consumption and surface water features that are used for human consumption.
"Product deliverer" means any person who delivers or deposits product into an UST. This term may include major oil companies, jobbers, petroleum transportation companies, or other product delivery entities.
"Property damage" shall have the meaning given this term by applicable Colorado laws. This term shall not include those liabilities, which, consistent with standard insurance industry practices, are excluded from coverage in liability insurance policies for property damage. However, such exclusions for property damage shall not include corrective action associated with releases from tanks, which are covered by the policy.
"Protected tank" is an atmospheric AST with integral secondary containment and thermal insulation that has been evaluated for resistance to physical damage and for limiting the heat transferred to the primary tank when exposed to a hydrocarbon pool fire and is listed in accordance with UL 2085 Standard for Protected Aboveground Tanks for Flammable and Combustible Liquids or an equivalent test procedure.
"Provider of financial assurance" means an entity that provides financial assurance to an owner/operator of an UST through mechanisms including but not limited to being an insurer, an issuer of a letter of credit, or the trustee of a trust fund.
"Red Tag" means a tag, device, or mechanism on the tank's fill pipes that clearly identifies an UST as ineligible for product delivery. The tag or device is easily visible to the product deliverer and clearly states and conveys that it is unlawful to deliver to, deposit into, or accept product into the ineligible UST. The tag, device, or mechanism is generally tamper-resistant.
"Refined Fuels Vehicle Tank Meter (VTM)" means a meter mounted on a refined fuels delivery tank vehicle, including those used for the measurement and delivery of liquid fuel products.
"Reimbursement" means an assignment of money from the Fund to reimburse a person for approved costs incurred in remediating petroleum contamination.
"Registered Service Agency (RSA)" means any agency, firm, company, or corporation that for hire, award, commission or any other payment of any kind installs, services, repairs, or reconditions a commercial weighing or measuring device and that voluntarily registers with the division. Under agency registration, identification of individual servicepersons shall be required.
"Regulated substance" for UST systems has the same meaning as in C.R.S. § 8-20.5-101(13) as follows:
"Regulated substance" for AST systems means regulated fuel products as defined in C.R.S. § 8-20.5-101(6), including alternative fuels and renewable fuels as defined in CRS 8-20.5-101(2.5) and (14.5) as follows:
"Release" means any spilling, leaking, emitting, discharging, escaping, leaching, or disposing of a regulated substance from a regulated tank system into the environment.
"Release detection" means determining whether a release of a regulated substance has occurred from the UST or AST system into the environment or a leak has occurred into the interstitial space between the UST or AST system and its secondary barrier or secondary containment around it.
"Remediation" means actions taken to reduce concentrations of chemicals of concern (including natural attenuation), or prevent migration of chemicals of concern to POEs. Remediation shall be implemented for sites where no further action is not appropriate.
"Renewable fuel" means a motor vehicle fuel that is produced from plant or animal products or wastes, as opposed to fossil fuel sources.
"Repair" means to restore to proper operating condition a tank, pipe, spill prevention equipment, overfill prevention equipment, corrosion protection equipment, release detection equipment or other AST or UST system component.
"Replace" This term applies to underground storage tanks and piping.
For underground storage tanks - Replace means to remove an existing underground storage tank and install a new underground storage tank.
For underground piping - Replace means to remove and put back in, any amount of piping connected to a tank system. The secondary containment requirements for replaced piping are triggered when a minimum of 50% or 50 feet (whichever is less) of the total length of piping connected to a single tank is replaced. The total length of piping connected to a single tank includes the length of piping from that tank to the farthest connected dispenser, including piping runs between dispensers connected to that tank.
"Reportable quantity" means quantities of a released regulated substance that equal or exceed the reportable quantity under the federal "Comprehensive Environmental Response, Compensation, and Liability Act of 1980", as amended, and petroleum products in quantities of twenty-five gallons or more.
"Residential tank" is a tank located on property used primarily for dwelling purposes.
"Retail motor fuel device" (RMFD) is a device designed for the measurement and delivery of liquid fuel products for internal combustion engines. The term "motor-fuel dispenser" means the same as "motor-fuel device".
"Risk-based corrective action (RBCA)" means a consistent decision-making process for the assessment and response to a petroleum release, based on the protection of human health and the environment according to ASTM 1739.
"Secondary containment" This term applies to AST and UST Systems
For AST systems secondary containment is containment which prevents any release from an AST system from reaching land or waters outside of the containment area, and can include remote impounding, diking, or different types of AST construction. Where underground piping is connected to an AST, the definition of "secondary containment" for UST systems also applies to the piping.
For UST systems secondary containment is a release prevention and release detection system for an underground tank and/or piping. The release prevention part of secondary containment is an underground tank and/or piping having an inner and outer barrier. Between these two barriers is a space for monitoring. The release detection part of secondary containment is a method of monitoring the space between the inner and outer barriers for a leak or release of regulated substances from the underground tank and/or piping (called interstitial monitoring). This term includes containment sumps when used for interstitial monitoring of piping.
"Secondary containment tank" is a shop-fabricated AST that includes a steel or reinforced concrete secondary shell that will provide containment of the entire capacity of the inner tank in case of leaks or ruptures of the inner tank and having means for monitoring the interstitial space for a leak.
"Sensitive environment" is an area of particular environmental value where regulated petroleum contamination could pose a greater threat than in other less sensitive areas. Sensitive environments include: critical habitat for federally endangered or threatened species, national parks, national monuments, national recreation areas, national wildlife refuges; national forests, campgrounds; recreational areas, game management areas, wildlife management areas, designated federal wilderness areas, wetlands, wild and scenic rivers, state parks, state wildlife refuges, habitat designated for state endangered species, fishery resources, state designated natural areas, wellhead protection areas, classified groundwater areas, and county or municipal parks.
"Septic tank" is a water-tight covered receptacle designed to receive or process, through liquid separation or biological digestion, the sewage discharged from a building sewer where the effluent from such receptacle is distributed for disposal through the soil and settled solids and scum from the tank are pumped out periodically and hauled to a treatment facility.
"Service station" is a place where motor fuels are sold to the general public for cash or credit and are dispensed into the fuel tanks of motor vehicles or approved containers. This does not include unattended cardlock system facilities at bulk plants which only use proprietary cards specific to the cardlock system in question.
"Significant violation" means the failure of a person to comply with any requirement of Article 2 of 7 C.C.R. 1101-14, which includes any of the following:
"Site check" means collecting soil and/or groundwater samples for laboratory analysis from locations most likely to demonstrate the presence of a release from a regulated storage tank system.
"Source concentration" is the highest concentration, in soil and/or groundwater and /or vapor, of the chemicals of concern.
"State inspector" is a person who is employed or authorized by the division to perform inspections of facilities storing regulated substances.
"Storm-water or wastewater collection system" means piping, pumps, conduits, and any other equipment necessary to collect and transport the flow of surface water run-off resulting from precipitation, or domestic, commercial, or industrial wastewater to and from retention areas or any areas where treatment is designated to occur. The collection of stormwater and wastewater does not include treatment except where incidental to conveyance.
"Subsurface soils" are all soils located at a depth of greater than one meter below the ground surface.
"Surface impoundment" is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although it may be lined with man-made materials) that is not an injection well.
"Surficial soils" are all soils located from the ground surface to a depth of one meter below the ground surface.
"System test" means a test of tank system components, including any associated delivery piping, secondary containment, or spill control component, to identify releases of regulated substances. Specifically, for underground tanks, underground piping, spill prevention equipment, and containment sumps. Owners and operators must conduct tests according to the requirements for tank tightness testing (2-3-4-2(c)), line tightness testing (2-3-4-3(a)(2)(i)), and spill prevention equipment and containment sumps (2-3-5(a)).
"Temporary closure" means a period of time that a storage tank is empty but is not permanently closed or has not changed service to store a non-regulated substance. This term does not apply when a tank system is emptied for repair.
"Training program" means any program that provides information to and evaluates the knowledge of a Class A, Class B, or Class C operator through testing, practical demonstration, or another approach acceptable to the implementing agency regarding requirements for UST systems that meet the requirements of Section 2-3-1.
"Transportation-related facilities" as used in these regulations means facilities where all ASTs with capacities from 660 to 39,999 gallons are regulated by the USDOT.
"Trustee" is a member of a Trust that is an applicant to the Fund. A trustee can be an individual or a company that acts on behalf of the Trust.
"Ullage" is the portion of a storage tank that does not contain liquid.
"Unattended cardlock system" is a vehicle fueling facility, which uses a mechanical or electronic method of tracking fuel deliveries using an identification card.
"Under-dispenser containment (UDC)" means containment underneath a dispenser that will prevent leaks from the dispenser and piping within or above the UDC from reaching soil or groundwater.
"Underground storage tank" (UST) means any one or combination of tanks, including underground pipes connected thereto, except those exempted in statute and these regulations, that is used to contain an accumulation of regulated substances and the volume of which, including the volume of underground pipes connected thereto, is ten percent or more beneath the surface of the ground and is not permanently closed.
"Underground storage tank (UST) system" refers to an underground storage tank, connected underground piping, underground ancillary equipment, and containment system, if any.
"Upgrade" means the addition or retrofit of some systems (such as cathodic protection, lining, modification of the system piping, or spill and overfill controls, etc.) to improve the ability of an UST or AST system to prevent the release of product.
"Vault" means an enclosure (other than a secondary containment tank), either above- or below-grade, that completely encloses an AST.
"Wastewater treatment tank" means a tank that is designed to receive and treat influent wastewater through physical, chemical, or biological methods.
"Working days" means consecutive days, excluding weekends and nationally recognized holidays.
7 CCR 1101-14-1-5