• Do not use asphalt or other petroleum based materials.
• Do not construct a hard surface crossing on streams where the bottom is mucky, muddy or otherwise unstable, or if down-stream water quality standards violations occur under normal operating conditions.
• Do not use logs or logging slash as a permanent hard surface crossing material. Logs may be used to facilitate temporary crossings but must be removed from the channel upon completing the operation.
• Keep the height of the surfacing material at a minimum; hard surface crossings must not significantly restrict normal streamflow.
Note: Make sure that crossings are in compliance with other standards and regulations that apply - all types of stream crossings may be subject to permitting by regulatory agencies.
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