Applies to contractors engaged in waterproofing buildings or structures not covered by another classification (N.O.C.). This classification includes the application of waterproofing or sealant material to surfaces or cracks and voids to eliminate leaks in all types of buildings or structures, regardless of height. Such structures may include, but are not limited to:

• Foundations and foundation walls;

• Walls;

• Floors;

• Decks;

• Fences;

• Walkways; and

• Driveways.

Waterproof material is applied to a variety of surfaces such as:

• Wood;

• Concrete;

• Asphalt;

• Steel;

• Metal;

• Plaster; or

• Stone.

There are several types of waterproof processes which may include:

• Membrane, which adheres long strips of rubber and pumice to exterior walls or foundations with the use of primer;

• Pressure injection, which uses a long wand inserted into the ground to fill cracks;

• Epoxy injection, which is performed on the interior or exterior with use of a caulk gun to inject a silicon material into cracks; or

• Application with use of a brush, roller or spray directly onto the surface.

This classification excludes:

• Excavation work performed in conjunction with a waterproofing contract which is to be reported separately in classification 0101;

• Waterproofing operations performed in connection with roofing or subaqueous work which are to be reported separately in the classification applicable to the work being performed;

• The application of asphalt sealant or waterproof materials to roadways and parking lots which is to be reported separately in classification 0219;

• Filling cracks or voids with like materials which is to be reported separately in the classification applicable to the repair work being performed; and

• The application of waterproof materials performed by a concrete contractor as part of the concrete construction project which is to be reported separately in the classification applicable to the work being performed.

Special note: If excavation work is performed (to remove dirt away from a foundation wall or to push it against the wall after the waterproofing material is applied) classification 0101 applies, regardless of the type of contractor performing the excavation work.

Applies to contractors engaged in pressure washing or sandblasting buildings or structures, not covered by another classification (N.O.C.). This classification includes cleaning, washing, pressure washing or sandblasting to remove dirt, moss, rust or old paint. Pressure washing involves a forced spray of air and water to remove unwanted surface materials. Sandblasting, or abrasive blasting, involves a forced spray of sand, steel, or glass. This classification includes the cleaning of roofs, gutters, and downspouts, and the removal of moss or snow from multiple story buildings.

This classification excludes:

• Contractors engaged in multimedia blasting in shop which is to be reported separately in classification 3402;

• Pressure washing or sandblasting by a painting contractor as a part of the preparation for painting exterior buildings, structures, or the interior/exterior of tanks which is to be reported separately in the classification 0504-21;

• Pressure washing as a part of interior building painting contracts which is to be reported separately in classification 0521;

• Cleaning or washing roofs, or removing snow from, single story buildings (when the cleaning or washing is not part of a painting or roofing contract) which is to be reported separately in classification 6602;

• Waterproofing buildings or structures, N.O.C. which is to be reported separately in classification 0504-06; and

• Pressure washing or sandblasting operations performed in conjunction with and as a part of another type of business such as a foundry, metal goods manufacturer, auto body repair shop, etc., which is to be reported separately in the applicable classification.

Applies to contractors engaged in lead abatement which is performed on structures where there are significant amounts of lead-based paint and lead dust. Contractors must comply with various governmental regulations. The first step in all lead abatement projects is the preliminary testing of the site to determine the presence of lead and the extent of the contamination. If the ground surrounding the proposed worksite is contaminated, it will require remediation, which is done by a soil remediation contractor who is to be reported separately in the appropriate classification. The next step is deciding which abatement procedure is right for the project such as:

• Encapsulation which is used on interior surfaces to seal the lead-based paint with a bonding material;

• Enclosure which is used on interior and exterior surfaces and involves constructing special airtight enclosures made out of gypsum wallboard, plywood paneling, aluminum, vinyl or wood exterior sidings;

• Component replacement which involves removing building components such as paneling, moldings, windows and doors which are coated with lead-based paint and replacing them with new components; and

• Chemical removal, abrasive removal or hand scraping which are methods to physically remove the lead paint.

This classification includes all preparation work and all cleanup work.

This classification excludes:

• Soil remediation work which is to be reported separately in classification 0101;

• Asbestos abatement which is to be reported separately in classification 0512; and

• Lead abatement as part of a painting contract for interior/exterior of buildings or structures, or the interior/exterior of tanks which is to be reported separately in the applicable classification.

Applies to contractors engaged in painting the exterior of all types of buildings or structures not covered by another classification (N.O.C.), regardless of height. Buildings and structures include, but are not limited to:

• Bridges;

• Towers;

• Smokestacks;

• Stadiums;

• Factories;

• Warehouses;

• Stores;

• Churches; and

• Residential or commercial single or multiple story buildings.

Paint is applied by brush, roller or spray to a variety of surfaces such as wood, concrete, steel, metal, plaster, stone, or other types of exterior surfaces. This classification includes all preparation work such as the set up of scaffolding or power lifts, pressure washing, removal of old paint or asbestos, sandblasting, taping or masking, and cleanup work. This classification also applies to cleaning, coating, or painting the interior/exterior of oil or gas storage tanks, beer vats, or sewage treatment tanks.

This classification excludes:

• Contractors engaged in waterproofing buildings or structures, N.O.C. which are to be reported separately in classification 0504-06;

• Pressure washing services or sandblasting of buildings or structures which are to be reported separately in classification 0504-18;

• Interior painting of buildings which is to be reported separately in classification 0521;

• Painting of murals or other artwork on the interior of buildings which is to be reported separately in classification 4109; and

• Painting of murals or other artwork on the exterior of buildings which is to be reported separately in classification 0403.

Special note: See asbestos certification and training requirements at www.lni.wa.gov.