This report presents the importance of best management practices for mitigating erosion from resource roads and preventing sediment from entering a watercourse. Key to achieving these goals is the understanding of erosion from the road surface and the level of connectivity from the delivery point of the sediment-laden water onto the forest floor and the watercourse. This report provides a list of best management practices that is specific to resource roads.
Debris management at logging sites and handling facilities is of increasing concern due to the volume of accumulated material and the constrained options for disposal. In March 2014, B.C. Timber Sales (BCTS) provided a timber sale on Maurelle Island that produced a large quantity of detached bark which originated from a 132-ha harvest area. Harvesting was during March 2014, and the predominant source of bark was from 41 150 m3 of Douglas-fir which accounted for approximately half the harvested volume (88 050 m3 total harvest volume). The bark accumulated at both a log storage area and on a transport barge during loading and unloading. The bark was disposed of along two dead-end spur roads (Figure 1). One of the spur roads has a small S6 stream (non-fish bearing) crossing through it. The disposal of logging debris (bark) along spur roads had not been considered or tried before by the Strait of Georgia Business Area of BCTS. The bark for Douglas-fir accounts for 30% by volume, which is the highest overall volume of bark for all softwood species (on average bark accounts for 10 to 15%).
The Forest Engineering Research Institute of Canada (FERIC) and the B.C. Ministry of Forests’ Resource Tenures and Engineering Branch surveyed users of closed-bottom corrugated-steel embedded culverts to find installations that generally conform to the Fish-stream Crossing Guidebook that was released in 2002 under the Forest Practices Code of British Columbia Act. This report describes seven sites that were visited, and includes the installation procedures and costs for each of the sites.
The Forest Engineering Research Institute of Canada (FERIC) surveyed users of closed-bottom corrugated-steel embedded culverts within British Columbia and visited selected sites. This report presents information about the installations visited, including the installation procedures and costs. This report also provides suggestions for the implementation of future embedded culverts.
Forest managers in western Canada are now treating old forest roads and harvested sites to mitigate environmental concerns. This Compendium has been developed to assist practitioners in western Canada in selecting and implementing restoration measures appropriate to their needs and conditions. Watershed restoration activities, techniques and research trials in western North America are described and contacts for further information are given. Additions to the Compendium will be made on an ongoing basis.
Wetlands are a critical and valued component of boreal landscapes in northeastern Alberta, and they comprise a significant proportion of operational tenures within the in-situ oil sands region. While companies have made progress on avoidance and mitigation strategies to reduce their impacts to wetlands, they also face many common challenges, including pad, road, and culvert settlement; culvert bowing and failure; and tree mortality or other vegetation changes in wetlands adjacent to roads. This
document compiles a toolbox of shared practices currently in use by COSIA companies, or which have been used but were found to be unsuccessful.
Logging operations conducted during the spring may encounter a greater amount of bark sloughing from cut trees than during other times of the year. The sap flow in a tree during the spring can loosen bark, and depending on the tree species, it can result in bark becoming detached more easily during machine handling. In March 2014, B.C. Timber Sales (BCTS) provided a sale on Maurelle Island that produced a large quantity of detached bark. The bark accumulated at both the log storage area and on the transport barge during loading and unloading. The amount of bark on the barge was too much for the offload facility to accept, so it was left on the barge for the return trip to Maurelle Island. The bark was disposed of along two dead-end spur roads.
Galvanized steel (zinc coated) culverts have been used extensively as conduits for water management along resource roads. Practitioners have become accustomed to using galvanized culverts for many applications. There are, however, alternative coatings that may be better suited for local site and environmental conditions, thereby helping extend a culvert’s expected life. Although abrasion, culvert wall thickness, and coatings are all important considerations for determining the life expectancy of a culvert, this research note focuses on the site parameters identified in water samples that can be used as indicators to help avoid corrosion.
This handbook is a compilation of erosion and sediment control practices aimed at aiding the forest industry, and includes background information to support such practices. These practices are often termed Best Management Practices (BMPs). The handbook will offer guidance for erosion prevention and sediment containment along forest roads where the driving forces are rain and moving water; erosion from wind and mass wasting processes will not be covered.