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原文传递 Environmentally Sensitive Maintenance for Dirt and Gravel Roads.

题名：	Environmentally Sensitive Maintenance for Dirt and Gravel Roads.
作者：	gesford, a. l. anderson, j. a.
关键词：	rural roads, design criteria, dirt, gravel, crushed stone, aggregates, natural systems, innovative technologies, sediment, dust pollution
摘要：	This is a nonpoint source pollution project that identifies, documents, and encourages the use of environmentally sensitive maintenance of dirt and gravel roads. Specifically, this project involved the development of a reference manual and related technical information sheets on 'Environmentally Sensitive Maintenance of Dirt and Gravel Roads' for national use. The manual will provide insight into using natural systems and innovative technologies to reduce erosion, sediment and dust pollution while more effectively and efficiently maintaining dirt and gravel roads. The manual will address the environment of forests, mountainous terrain, and rolling hills. Various states already employ some of the more common practices, particularly forestry departments. These states and their local governments are prime targets for deploying the additional practices to be addressed in the manual. The manual will give the users a 'tool box' full of environmentally sensitive maintenance tools or practices, recognizing that not one tool can fit every situation or site or solve all their problems in maintaining their dirt and gravel roads and protecting the environment. / NOTE: Technical ref. manual. / Supplementary Notes: See also PB2002-101136. Prepared in cooperation with Pennsylvania State Univ. Capitol Campus, Middletown. Inst. of State and Regional Affairs. Sponsored by Pennsylvania Dept. of Transportation, Harrisburg. Bureau of Maintenance and Operations. and Environmental Protection Agency, Washington, DC. / Availability Note: Available on CD-ROM and in color paper copy only. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0822；340p
报告类型：	科技报告