New Single-family Housing Construction (Except For-Sale Builders)

New Multifamily Housing Construction (except For-Sale Builders)

Commercial and Institutional Building Construction

Water and Sewer Line and Related Structures Construction

Oil and Gas Pipeline and Related Structures Construction

Power and Communication Line and Related Structures Construction

Other Heavy and Civil Engineering ConstructionGeneral $39.50m Small Business Size Standard: [Yes]Special $32.50m Dredging and Surface Cleanup Activities: [Yes] (4)

Poured Concrete Foundation and Structure Contractors

Structural Steel and Precast Concrete Contractors

Other Foundation, Structure, and Building Exterior Contractors

Electrical Contractors and Other Wiring Installation Contractors

Plumbing, Heating, and Air?Conditioning Contractors

All Other Specialty Trade ContractorsGeneral $16.50m Small Business Size Standard: [Yes]Special $16.50m Building and Property Specialty Trade Services: [Yes] (4)

Unlaminated Plastics Film and Sheet (except Packaging) Manufacturing

Laminated Plastics Plate, Sheet (except Packaging), and Shape Manufacturing

Aluminum Sheet, Plate and Foil Manufacturing

All Other Miscellaneous Electrical Equipment and Component Manufacturing

Surgical and Medical Instrument Manufacturing

Sporting and Athletic Goods Manufacturing

Automobile and Other Motor Vehicle Merchant Wholesalers

Motor Vehicle Supplies and New Parts Merchant Wholesalers

Motor Vehicle Parts (Used) Merchant Wholesalers

Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers

Brick, Stone, and Related Construction Material Merchant Wholesalers

Roofing, Siding, and Insulation Material Merchant Wholesalers

Other Construction Material Merchant Wholesalers

Photographic Equipment and Supplies Merchant Wholesalers

Computer and Computer Peripheral Equipment and Software Merchant Wholesalers

Other Commercial Equipment Merchant Wholesalers

Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers

Other Professional Equipment and Supplies Merchant Wholesalers

Metal Service Centers and Other Metal Merchant Wholesalers

Coal and Other Mineral and Ore Merchant Wholesalers

Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers

Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers

Other Electronic Parts and Equipment Merchant Wholesalers

Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers

Warm Air Heating and Air?Conditioning Equipment and Supplies Merchant Wholesalers

Refrigeration Equipment and Supplies Merchant Wholesalers

Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers

Farm and Garden Machinery and Equipment Merchant Wholesalers

Industrial Machinery and Equipment Merchant Wholesalers

Service Establishment Equipment and Supplies Merchant Wholesalers

Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers

Sporting and Recreational Goods and Supplies Merchant Wholesalers

Toy and Hobby Goods and Supplies Merchant Wholesalers

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers

Other Miscellaneous Durable Goods Merchant Wholesalers

Engineering ServicesGeneral $22.50m Small Business Size Standard: [Yes]Special $41.50m Military and Aerospace Equipment and Military Weapons: [Yes]Special $41.50m Contracts and Subcontracts for Engineering Services Awarded Under the National Energy Policy Act of 1992: [Yes]Special $41.50m Marine Engineering and Naval Architecture: [Yes] (4)

Geophysical Surveying and Mapping Services

Surveying and Mapping (except Geophysical) Services

Other Computer Related ServicesGeneral $30.00m Small Business Size Standard: [Yes]Special 150 Employees Information Technology Value Added Resellers: [Yes] (4)

Administrative Management and General Management Consulting Services

All Other Professional, Scientific and Technical Services

Other Services to Buildings and Dwellings

Remediation ServicesGeneral $22.00m Small Business Size Standard: [Yes]Special 750 Employees Environmental Remediation Services: [Yes] (4)

Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

Code	Description	Primary
238290	Other Building Equipment Contractors
221320	Sewage Treatment Facilities
236115	New Single-family Housing Construction (Except For-Sale Builders)

KEYSTONE SPECIALTY CONSTRUCTION LLC

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