A boiler, hot-water heating and steam fitting contractor installs, services and repairs power boiler installations, hot-water heating systems and steam fitting, including fire-tube and water-tube steel power boilers and hot-water heating low pressure boilers,steam fitting and piping, fittings, valves, gauges, pumps, radiators, convectors, fuel oil tanks, fuel oil lines, chimneys, flues, heat insulation and all other equipment, including solar heating equipment, associated with these systems.

• C-4 – Boiler, Hot Water Heating and Steam Fitting Contractor

A framing and rough carpentry contractor performs any form work, framing or rough carpentry necessary to construct framed structures; installs or repairs individual components of framing systems and performs any rough carpentry or associated work, including but not limited to the construction or installation of: sub-flooring, siding, exterior staircases and railings, overhead doors, roof decking, truss members, and sheathing.

The amendments made to this section in 2002 shall become operative January 1, 2003, or as soon thereafter as administratively feasible, whereupon any licensee who has passed the C-5 Carpentry, Cabinet and Millwork trade examination on or after January 10, 2000, up to the effective date of this section, shall have the C-6 Cabinet, Millwork and Finish Carpentry classification added to the applicable license.

• C-5 – Framing and Rough Carpentry Contractor

A cabinet, millwork and finish carpentry contractor makes cabinets, cases, sashes, doors, trims, nonbearing partitions and other items of “finish carpentry” by cutting, surfacing, joining, gluing and fabricating wood or other products to provide a functional surface. This contractor also places, erects, and finishes such cabinets and millwork in structures.

The amendments made to this section in 2002 shall become operative January 1, 2003, or as soon thereafter as administratively feasible, whereupon the C-6 Cabinet, Millwork and Finish Carpentry classification shall replace the C-5 Carpentry, Cabinet and Millwork classification on any license unless the qualifier for the license has passed the C-5 Carpentry, Cabinet and Millwork trade exam on or after January 10, 2000, or held the C-5 classification prior to that date.

• C-6 – Cabinet, Millwork and Finish Carpentry Contractor

A communication and low voltage contractor installs, services and maintains all types of communication and low voltage systems which are energy limited and do not exceed 91 volts. These systems include, but are not limited to telephone systems, sound systems, cable television systems, closed-circuit video systems, satellite dish antennas, instrumentation and temperature controls, and low voltage landscape lighting. Low voltage fire alarm systems are specifically not included in this section.

• C-7 – Low Voltage Systems Contractor

A drywall contractor lays out and installs gypsum wall board and gypsum wall board assemblies including nonstructural metal framing members, and performs the taping and texturing operations including the application of compounds that adhere to wall board to produce a continuous smooth or textured surface.

• C-9 – Drywall Contractor

An electrical contractor places, installs, erects or connects any electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells or any part thereof, which generate, transmit, transform or utilize electrical energy in any form or for any purpose.

• C10 – Electrical Contractor

An elevator contractor fabricates, erects, installs and repairs elevators, including sheave beams, motors, sheaves, cable and wire rope, guides, cab, counterweights, doors (including sidewalk elevator doors), automatic and manual controls, signal systems, and all other devices and equipment associated with the safe and efficient installation and operation of electrical, hydraulic and manually operated elevators.

• C11 – Elevator Contractor

A fencing contractor constructs, erects, alters, or repairs all types of fences, corrals, runs, railings, cribs, game court enclosures, guard rails and barriers, playground game equipment, backstops, posts, flagpoles, and gates, excluding masonry walls.

• C13 – Fencing Contractor

A flooring and floor covering contractor prepares any surface for the installation of flooring and floor coverings, and installs carpet, resilient sheet goods, resilient tile, wood floors and flooring (including the finishing and repairing thereof), and any other materials established as flooring and floor covering material, except ceramic tile.

• C15 – Flooring and Floor Covering Contractors

A Fire protection contractor lays out, fabricates and installs all types of fire protection systems; including all the equipment associated with these systems, excluding electrical alarm systems.

• C16 – Fire Protection Contractor

A glazing contractor selects, cuts, assembles and/or installs all makes and kinds of glass, glass work, mirrored glass, and glass substitute materials for glazing; executes the fabrication and glazing of frames, panels, sashes and doors; and/or installs these items in any structure.

• C17 – Glazing Contractor

A warm-air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air-conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems. This classification shall include warm-air heating, ventilating and air-conditioning systems which utilize solar energy.

• C20 – Warm-Air Heating, Ventilating and Air-Conditioning Contractor

A building moving/demolition contractor raises, lowers, cribs, underpins, demolishes and moves or removes structures, including their foundations. This classification does not include the alterations, additions, repairs or rehabilitation of the permanently retained portions of such structures.

• C21 – Building Moving/Demolition Contractor

An ornamental metals contractor assembles, casts, cuts, shapes, stamps, forges, welds, fabricates and installs, sheet, rolled and cast, brass, bronze, copper, cast iron, wrought iron, monel metal, stainless steel, steel, and/or any other metal for the architectural treatment and ornamental decoration of structures. This classification does not include the work of a sheet metal contractor.

• C23 – Ornamental Metal Contractor

A landscape contractor constructs, maintains, repairs, installs, or subcontracts the development of landscape systems and facilities for public and private gardens and other areas which are designed to aesthetically, architecturally, horticulturally, or functionally improve the grounds within or surrounding a structure or a tract or plot of land. In connection therewith, a landscape contractor prepares and grades plots and areas of land for the installation of any architectural, horticultural and decorative treatment or arrangement.

• C27 – Landscaping Contractor

A lock and security equipment contractor evaluates, sets-up, installs, maintains and repairs all doors and door assemblies, gates, locks and locking devices, panic and fire rated exit devices, manual and automatic operated gate and door closures and releases, jail and prison locking devices and permanently installed or built in safes and vaults. This classification includes but is not limited to master key systems, metal window guards, security doors, card activated and electronic access control systems for control equipment, motion and other types of detectors and computer systems for control and audit of control systems and other associated equipment. Fire alarm systems are specifically not included in this section.

• C28 – Lock and Security Equipment Contractor

A masonry contractor installs concrete units and baked clay products; concrete, glass and clay block; natural and manufactured stone; terra cotta; and fire brick or other material for refractory work. This classification includes the fabrication and installation of masonry component units for structural load bearing and non-load bearing walls for structures and fences installed with or without mortar; ceramic veneer (not tile) and thin brick that resembles full brick for facing; paving; and clear waterproofing, cleaning and caulking incidental to masonry construction.

• C29 – Masonry Contractor

A construction zone traffic control contractor prepares or removes lane closures, flagging, or traffic diversions, utilizing portable devices, such as cones, delineators, barricades, sign stands, flashing beacons, flashing arrow trailers, and changeable message signs, on roadways, including, but not limited to, public streets, highways, or any public conveyance.

• C31 – Construction Zone Traffic Control Contractor

A parking and highway improvement contractor applies and installs protective coatings, vehicle stops, guard rails and mechanical devices, directional lines, buttons, markers, signs and arrows on the horizontal surface of any game court, parking facility, airport, highway or roadway constructed of concrete, asphalt or similar material. This classification includes the surface preparatory work necessary for the application of protective coatings but does not include the re-paving of these surfaces.

• C32 – Parking and Highway Improvement Contractor

A painting and decorating contractor prepares by scraping, sandblasting or other means and applies any of the following: paints, papers, textures, fabrics, pigments, oils, turpentines, japans, driers, thinners, varnishes, shellacs, stains, fillers, waxes, adhesives, water and any other vehicles, mediums and materials which adhere by evaporation and may be mixed, used and applied to the surfaces of structures and the appurtenances thereto for purposes of decorating, protecting, fireproofing and waterproofing.

• C33 – Painting and Decorating Contractor

A pipeline contractor fabricates and installs pipelines for the conveyance of fluids, such as water, gas, or petroleum, or for the containment or protection of any other material, including the application of protective coatings or systems and the trenching, boring, shoring, backfilling, compacting, paving and surfacing necessary to complete the installation of such pipelines.

• C34 – Pipeline Contractor

(a) A lathing and plastering contractor coats surfaces with a mixture of sand, gypsum plaster, quick-lime or hydrated lime and water, or sand and cement and water, or a combination of such other materials that create a permanent surface coating, including coatings for the purpose of soundproofing and fireproofing. These coatings are applied with a plasterer’s trowel or sprayed over any surface which offers a mechanical means for the support of such coating, and will adhere by suction. This contractor also installs lath (including metal studs) or any other material prepared or manufactured to provide a base or bond for such coating.

(b) A lathing and plastering contractor also applies and affixes wood and metal lath, or any other material prepared or manufactured to provide key or suction bases for the support of plaster coatings. This classification includes the channel work and metal studs for the support of metal or any other lathing material and for solid plaster partitions.

(c) Effective January 1, 1998, or as soon thereafter as administratively feasible, all C-26 licensees will be merged into the C-35 Lathing and Plastering classification. On and after January 1, 1998, no application for the C-26 classification will be accepted and no new C-26 Lathing licenses will be issued.

• C35 – Lathing and Plastering Contractor

A plumbing contractor provides a means for a supply of safe water, ample in volume and of suitable temperature for the purpose intended and the proper disposal of fluid waste from the premises in all structures and fixed works. This classification includes but is not limited to:

(a) Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems;

(b) Piping, storage tanks and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air and gases for medical, dental, commercial and industrial uses;

(c) All gas appliances, flues and gas connections for all systems including suspended space heating units. This does not include forced warm air units;

(d) Water and gas piping from the property owner’s side of the utility meter to the structure or fixed works;

(e) Installation of any type of equipment to heat water, or fluids, to a temperature suitable for the purposes listed in this section, including the installation of solar equipment for this purpose; and

(f) The maintenance and replacement of all items described above and all health and safety devices such as, but not limited to, gas earthquake valves, gas control valves, back flow preventors, water conditioning equipment and regulating valves.

• C36 – Plumbing Contractor

A refrigeration contractor constructs, fabricates, erects, installs, maintains, services and repairs refrigerators, refrigerated rooms, and insulated refrigerated spaces, temperature insulation, air-conditioning units, ducts, blowers, registers, humidity and thermostatic controls for the control of air, liquid, and/or gas temperatures below fifty degrees Fahrenheit (50 ), or ten degrees Celsius (10 ).

• C38 – Refrigeration Contractor

A roofing contractor installs products and repairs surfaces that seal, waterproof and weatherproof structures. This work is performed to prevent water or its derivatives, compounds or solids from penetrating such protection and gaining access to material or space beyond. In the course of this work, the contractor examines and/or prepares surfaces and uses the following material: asphaltum, pitch, tar, felt, glass fabric, urethane foam, metal roofing systems, flax, shakes, shingles, roof tile, slate or any other roofing, waterproofing, weatherproofing or membrane material(s) or a combination thereof.

• C39 – Roofing Contractor

A sanitation system contractor fabricates and installs cesspools, septic tanks, storm drains, and other sewage disposal and drain structures. This classification includes the laying of cast-iron, steel, concrete, vitreous and nonvitreous pipe and any other hardware associated with these systems.

• C42 – Sanitation System Contractor

A sheet metal contractor selects, cuts, shapes, fabricates and installs sheet metal such as cornices, flashings, gutters, leaders, pans, kitchen equipment, duct work (including insulation, patented chimneys, metal flues, metal roofing systems and any other installations requiring sheet metal).

• C43 – Sheet Metal Contractor

A sign contractor fabricates, installs, and erects electrical signs, including the wiring of such electrical signs, and non-electrical signs, including but not limited to: post or pole supported signs, signs attached to structures, painted wall signs, and modifications to existing signs.

• C45 – Sign Contractor

A solar contractor installs, modifies, maintains, and repairs thermal and photovoltaic solar energy systems.

A licensee classified in this section shall not undertake or perform building or construction trades, crafts, or skills, except when required to install a thermal or photovoltaic solar energy system.

• C46 – Solar Contractor

(a) A general manufactured housing contractor installs, alters, repairs, or prepares for moving any type of manufactured home as defined in Section 18007 of the Health and Safety Code, any type of mobilehome as defined in Section 18008 of the Health and Safety Code, and any type of multifamily manufactured home as defined in Section 18008.7 of the Health and Safety Code, including the accessory buildings or structures, and the foundations. A manufactured home does not include any recreational vehicle, commercial coach, or factory-built housing as defined in Section 19971 of the Health and Safety Code.

(b) A general manufactured housing contractor may provide utility services on a single-family individual site placement. Utility services mean the connection of gas, water, sewer, and electrical utilities to the home.

• C47 – General Manufactured Housing Contractor

A reinforcing steel contractor fabricates, places and ties steel mesh or steel reinforcing bars (rods), of any profile, perimeter, or cross-section, that are or may be used to reinforce concrete structures.

• C50 – Reinforcing Steel Contractor

A structural steel contractor fabricates and erects structural steel shapes and plates, of any profile, perimeter or cross-section, that are or may be used as structural members for buildings and structures, including the riveting, welding, rigging and metal roofing systems necessary to perform this work.

• C51 – Structural Steel Contractor

A swimming pool contractor constructs swimming pools, spas or hot tubs, including installation of solar heating equipment using those trades or skills necessary for such construction.

• C53 – Swimming Pool Contractor

A ceramic and mosaic tile contractor prepares surfaces as necessary and installs glazed wall, ceramic, mosaic, quarry, paver, faience, glass mosaic and stone tiles; thin tile that resembles full brick, natural or simulated stone slabs for bathtubs, showers and horizontal surfaces inside of buildings, or any tile units set in the traditional or innovative tile methods, excluding hollow or structural partition tile.

• C54 – Ceramic and Mosaic Tile Contractor

A water conditioning contractor installs water conditioning equipment with the use of only such pipe and fittings as are necessary to connect the water conditioning equipment to the water supply system and to by-pass all those parts of the water supply system within the premises from which conditioned water is to be excluded.

• C55 – Water Conditioning Contractor

A well drilling contractor installs and repairs water wells and pumps by boring, drilling, excavating, casing, cementing and cleaning to provide a supply of uncontaminated water.

• C57 – Water Well Drilling Contractor

A welding contractor causes metals to become permanently attached, joined and fabricated by the use of gases and electrical energy, which creates temperatures of sufficient heat to perform this work.

• C60 – Welding Contractor

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7058.5. (a) No contractor shall engage in asbestos-related work, as defined in Section 6501.8 of the Labor Code, which involves 100 square feet or more of surface area of asbestos containing materials, unless the qualifier for the license passes an asbestos certification examination. Additional updated asbestos certification examinations may be required based on new health and safety information. The decision on whether to require an updated certification examination shall be made by the Contractors’ State License Board, in consultation with the Division of Occupational Safety and Health in the Department of Industrial Relations and the State Department of Health Services.

No asbestos certification examination shall be required for contractors involved with the installation, maintenance, and repair of asbestos cement pipe or sheets, vinyl asbestos floor materials, or asbestos bituminous or resinous materials.

“Asbestos” as used in this section, has the same meaning as defined in Section 6501.7 of the Labor Code.

(b) The Contractors’ State License Board shall develop, and deliver to all applicants with the request for bond and fee, a booklet containing information relative to handling and disposal of asbestos, together with an open book examination concerning asbestos-related work. All applicants for an initial contractor’s license and all applicants filing a delinquent renewal application who have not previously completed the open book examination shall complete and sign the open book examination and submit it to the Contractors’ State License Board with the required renewal or bond and fee.

• ASB – Asbestos Certification

7058.7. (a) No contractor shall engage in a removal or remedial action, as defined in subdivision (d), unless the qualifier for the license has passed an approved hazardous substance certification examination.

(b) (1) The Contractors’ State License Board, the Division of Occupational Safety and Health of the Department of Industrial Relations, and the Department of Toxic Substances Control shall jointly select an advisory committee, which shall be composed of two representatives of hazardous substance removal workers in California, two general engineering contractors in California, and two representatives of insurance companies in California who shall be selected by the Insurance Commissioner.

(2) The Contractors’ State License Board shall develop a written test for the certification of contractors engaged in hazardous substance removal or remedial action, in consultation with the Division of Occupational Safety and Health, the State Water Resources Control Board, the Department of Toxic Substances Control, and the advisory committee.

(c) The Contractors’ State License Board may require additional updated approved hazardous substance certification examinations of licensees currently certified based on new public or occupational health and safety information. The Contractors’ State License Board, in consultation with the Department of Toxic Substances Control and the State Water Resources Control Board, shall approve other initial and updated hazardous substance certification examinations and determine whether to require an updated certification examination of all current certificate holders.

(d) For purposes of this section “removal or remedial action” has the same meaning as found in Chapter 6.8 (commencing with Section 25300) of Division 20 of the Health and Safety Code, if the action requires the contractor to dig into the surface of the earth and remove the dug material and the action is at a site listed pursuant to Section 25356 of the Health and Safety Code or any other site listed as a hazardous waste site by the Department of Toxic Substances Control or a site listed on the National Priorities List compiled pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (42 U.S.C. Sec. 9601 et seq.). “Removal or remedial action” does not include asbestos-related work, as defined in Section 6501.8 of the Labor Code, or work related to a hazardous substance spill on a highway.

(e) (1) A contractor shall not install or remove an underground storage tank, unless the contractor has passed the hazardous substance certification examination developed pursuant to this section.

(2) A contractor who is not certified may bid on or contract for the installation or removal of an underground tank, as long as the work is performed by a contractor who is certified pursuant to this section.

(3) For purposes of this subdivision, “underground storage tank” has the same meaning as defined in subdivision (x) of Section 25281 of the Health and Safety Code.

• HAZ – Hazardous Substance Removal Certification

A central vacuum systems contractor installs, modifies, maintains or repairs central vacuum systems, pneumatic tube dispatching systems or any other type of pipeline which operates systems of reduced pressure for any purpose.

• D04 – Central Vacuum Systems

A concrete related services contractor installs reusable steel concrete form sections or interlocking precast pavers. Performs post-tensioning work, concrete sawing, breaking, curing, floor hardening treatment, coloring concrete, concrete restoration, coring work or operates a concrete pumping service; also includes the application of gunite, but does not include the installation of reinforcing steel.

• D06 – Concrete Related Services

A drilling contractor does core and post hole drilling, horizontal drilling (no piping) and drilling for placement of charges and performing blasting work; performs drilling for site dewatering, oil well drilling and other oil field related specialty work. (DOES NOT INCLUDE WATER WELL DRILLING)

• D09 – Drilling, Blasting and Oil Field Work

An elevated floors contractor installs wood or metal framed elevated computer flooring systems. This work does not include the construction of mezzanines.

• D10 – Elevated Floors

• D12 – Synthetic Products

A hardware, locks and safes contractor installs, modifies or repairs power and/or manually activated door and window locks with related hardware, built-in safes and vaults.

• D16 – Hardware, Locks and Safes

A machinery and pumps contractor installs, removes, modifies or repairs:

(a) Pumps; conveyors; cranes; dock levelers; various hoisting and material handling equipment and meters.

(b) Dumb waiters; handicap lifting and assistance equipment; automated speedrail trolley systems for garment hanging.

(c) Automatic car washing racks and auto body paint finishing booth equipment.

NOTE: Construction of buildings and/or roof structures for this equipment is not included.

• D21 – Machinery and Pumps

A metal products contractor installs, modifies or repairs the following:

(a) Metal cabinets, lockers, modular storage structures, mail chutes, cable racks; and aluminum or vinyl storm doors and windows.

(b) Metal wall tiles; aluminum fascia covers; and metal gutters.

(c) Aluminum studs and trusses; metal railings and turnstiles; metal prison cell accessories such as welded-to-structure cell furniture; grills and cabinets.

• D24 – Metal Products

A metal products contractor installs, modifies or repairs the following:

(a) Metal cabinets, lockers, modular storage structures, mail chutes, cable racks; and aluminum or vinyl storm doors and windows.

(b) Metal wall tiles; aluminum fascia covers; and metal gutters.

(c) Aluminum studs and trusses; metal railings and turnstiles; metal prison cell accessories such as welded-to-structure cell furniture; grills and cabinets.

• D24 – Metal Products

A doors, gates and activating devices contractor installs, modifies or repairs all types of residential, commercial or industrial doors including overhead or sliding door assemblies. This includes but is not limited to: wood and screen doors, metal-clad doors, glass sliding/stationary doors and frames, automatic revolving doors, hospital cubical doors and related installations, power activated doors, gates, movable sun shades/shutters, card activated equipment and other access control device and any low voltage electronic or manually operated door hardware/ device.

• D28 – Doors, Gates and Activating Devices

A paperhanging contractor applies all types and varieties of decorative wall coverings, except painting or paneling, including paper and vinyl goods, cork, burlap and carpet-type wall coverings.

• D29 – Paperhanging

A pile driving and pressure foundation jacking contractor provides a pile driving and/or caisson drilling or auger service. This work also includes but is not limited to the injection of concrete or mortar into foundations for stabilization purposes.

• D30 – Pile Driving and Pressure Foundation Jacking

A prefabricated products/equipment contractor performs installations of prefabricated products/equipment, including but not limited to the following:

(a) Theater stage equipment, school classroom equipment, playground equipment, bleacher bench/seat component parts (no installation or renovation of any supporting or structural member); store fixtures, and display cases (either prefabricated or modular form); all forms and types of toilet/shower room partitions/accessories; and prefabricated closet systems.

(b) Laboratory and medical equipment, dust collecting systems; factory built fireplaces and accessories (no masonry facing); major appliance installations and ventilating hoods in connection with existing fuel and energy lines which are installed by others.

(c) Bus stop shelters, prefabricated phone booths; prefabricated sound proof environmental clean rooms; panelized refrigerated walk-in boxes (not to include the work of refrigeration contractor); all types of modular office, institutional or home improvement systems including, but not limited to all types of pre-finished and/or UL listed pre-wired wall panels.

• D34 – Prefabricated Equipment

A pool and spa maintenance contractor installs, replaces or repairs pool motors, pumps, filters, gas heaters and any above ground piping in connection with pools; includes electrical switches, breakers, pool lights, diving boards, existing solar systems that heat pools, pool and spa acid baths and applies vinyl liners to existing surfaces.

• D35 – Pool and Spa Maintenance

A sand and water blasting contractor uses the force of compressed air in conjunction with abrasive materials or water to clean or prepare surfaces for any protective, decorative and/or functional treatment.

• D38 – Sand and Water Blasting

A scaffolding contractor erects metal or wood scaffolding including temporary sidewalk sheltered construction work barricades.

• D39 – Scaffolding

A service station maintenance contractor installs and/or removes underground fuel storage tanks up to 20,000 gallons which have been or are to be used for dispensing gasoline, diesel fuel, waste oil or kerosene (no chemicals). This work involves the installation and/or removal of all incidental tank related piping, electrical work, including the installation of vapor probes in back fill areas of the tanks and any associated calibration work, including but not limited to the testing and adjustment of leak detection and vapor recovery equipment, such as automatic tank gauges, leak line detectors, vapor recovery lines, and in-station diagnostics. This contractor also performs the installation of auto hoisting equipment, grease racks, compressors, air hoses, and other service station equipment.

Note: Licensees holding this classification prior to January 18, 2001, may perform all the work as described above. Licenses issued after this date may perform the “calibration” work only.

• D40 – Service Station Equipment and Maintenance

A siding and decking contractor applies or installs all types of exterior siding including wood, wood products, vinyl, aluminum and metal siding to new or existing buildings. This contractor also constructs wooden decks and related handrails. This work shall not include the construction or installation of covers or enclosures of any kind.

• D41 – Siding and Decking

A non-electrical sign installation contractor fabricates and installs all types of non-electrical signs, including but not limited to: post or pole supported signs, signs attached to structures, painted wall signs and modifications to existing signs.

• D42 – Non-Electrical Sign Installation

A tree service contractor prunes trees, removes trees, limbs or stumps (including grinding) and engages in tree or limb guying.

• D49 – Tree Service

A suspended ceilings contractor installs, modifies or repairs all types of suspended ceilings, including but not limited to the following: lay-in-grid and other types of systems involving solid, perforated or translucent ceiling panels (no electrical work).

• D50 – Suspended Ceilings

A window coverings contractor installs or applies decorative, architectural/ functional window/glass treatment or covering products, including but not limited to the following: all types of materials and fabrics that make up louvers, shutters, Venetian and mini-blinds; residential or commercial draperies and screens; expanded metal window and door guards; plastic film window treatment and/or any other window treatment applied for temperature control or as a screening device.

• D52 – Window Coverings

A wood tanks contractor erects or repairs elevated wooden storage tanks and related cooling towers. (Hot tubs are not included.)

• D53 – Wood Tanks

A trenching contractor is a limited specialty contractor whose contracting business is trenching only for foundations, pipelines, conduit and related trenching work.

• D56 – Trenching Only

A hydroseed spraying contractor applies seeds through any liquid media to any type of surface that has been prepared or contoured by others.

• D59 – Hydroseed Spraying

An air and water balancing contractor installs any device and performs any work related to providing a specified flow of air in all types of existing heating and cooling systems and/or related to providing a specified flow of water in water piping systems.

• D62 – Air and Water Balancing

A construction cleanup contractor cleans up and/or removes from building grounds or structures any debris resultant from any construction project including but not limited to: concrete, dirt, scrap lumber, plaster, drywall, any paint or adhesive products from windows, floors, ceramic tile and bathroom fixtures.

• D63 – Construction Clean-up

A nonspecialized contractor installs, modifies, maintains and repairs new products and/or new installations which are not defined in any section herein or defined in any license classification authorized by the Board under Chapter 9, Division 3 of the Business and Professions Code (Contractors License Law).

• D64 – Non-specialized

A weatherization and energy conservation contractor installs, removes, modifies or repairs or provides maintenance services for energy conservation products limited to the following: door and window weather stripping, caulking, water heater pipe wrap, water heater blankets, insulating gaskets for electrical outlet covers, shade screens, shutters, storm windows, tinted window film, residential water flow restricting devices installed onto existing fixture. (DOES NOT INCLUDE INSULATION, GLAZING OR HEATING VENTILATING AND AIR CONDITIONING WORK)

• D65 – Weatherization and Energy Conservation