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A Northwest Industry Roundtable Report

Appendix D: Glossary

Anti-foulant Coatings: Bottom paints that retard the buildup of barnacles and other marine organisms on hulls, through the use of pesticides, coating surface characteristics or other physical or chemical methods.

Best Management Practices (BMPs): Physical, structural, and/or managerial practices that, when used singularly or in combination, prevent or reduce pollutant discharges.

Boatyard: A facility which builds or repairs boats less than 65 feet in length.

Cuprous Oxide: A copper-based pesticide used in anti-foulant coatings to retard the buildup of barnacles and other marine organisms on hulls.

Floating Drydock: A work area consisting of a bottom and wing walls that raises ships above the water level by means of ballast tanks.

Hydroblasting: The use of pressurized water to remove coatings from hulls.

Industrial Waste: Any liquid, gaseous, solid or radioactive waste material, or combination of such materials, resulting from any process of industry, manufacturing, trade or business, or from the development and recovery of natural resources.

Marine Railway: A platform with keel blocks that is positioned on a railway located next to a shoreline and extending into the water.

Non-point Source: Pollution that enters any waters of the state from any dispersed land-based or water-based activities; surface water runoff from agricultural lands, urban areas or forest lands; subsurface or underground sources.

Permit: A document issued pursuant to Oregon Revised Statutes and Oregon Administrative Regulations specifying waste treatment and control requirements, and waste discharge conditions.

pH: A numerical measure of a liquid’s acidity or alkalinity, expressed on a scale of 0-14, in which numbers less than 7 signify acidity, numbers greater than 7 signify alkalinity, and 7 signifies a neutral liquid.

Port Authorities: Public agencies authorized by state law to carry out improvements, provide services and establish regulations that facilitate the movement of commercial goods and passengers.

Pressure Washing: The use of a water pressure washer to remove dirt and marine organisms from hulls. The process may include hand scrubbing and rinsing with low-pressure water from a hose.

Shipyard: A facility which builds or repairs vessels longer than 65 feet in length.

Stormwater: Stormwater runoff, snow melt runoff, surface runoff, and pavement runoff and drainage.

Tributyltin (TBT): A tin-based pesticide used in anti-foulant coatings to retard the buildup of barnacles and other marine organisms on hulls.

Turbidity: Clarity of water expressed as nephelometric turbidity units (NTU) and measured with a calibrated turbidimeter. Turbidity in water is caused by suspended matter, such as clay, silt, fine sediments, and micoscopic organisms.

Water Pollution: Such contamination, or other alteration of the physical, chemical or biological properties, of any waters of the state, including changes in temperature, taste, color, turbidity, or odor of the waters, or such discharge of any liquid, gaseous, solid, radioactive, or other substance into any waters of the state as will or is likely to create a nuisance or render such waters harmful, detrimental, or injurious to the public health, safety or welfare, or to domestic, commercial, industrial, agricultural, recreational, or other legitimate beneficial uses, or to livestock, wild animals, birds, fish or other aquatic life.

Waters of the State: Lakes, bays, ponds, impounding reservoirs, springs, wells, rivers, streams, creeks, estuaries, marshes, inlets, canals, underground ocean waters, natural or artificial, inland or coastal, fresh or salt, public or private (except private waters that do not combine or effect a junction with natural surface or underground waters) that are wholly or partially within the state of Oregon or within its jurisdiction.


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This report was developed with grant funding from the U.S. Environmental Protection Agency, and was a joint project of the Business Assistance Programs in Alaska, Idaho, Oregon and Washington.

© 1999, Pacific Northwest Pollution Prevention Resource Center
phone: 206-352-2050, e-mail: office@pprc.org, web: www.pprc.org