Revised Final Environmental Study Report (24 MB) - Gold Canyon ...

All of the culvert sizes recommended in Table 2 can be successfully installed in winter, provided
the MNR guidelines appended to this report are followed. It is recommended that the pipe wall
thickness be 3.5mm, or preferably 4.2mm, for greater strength.
The recommended culvert length is 13m to provide a 6m trail surface, 0.5m cover over the pipe
and 1.75H:1V fill slope angles. When the trail is upgraded to a full-width forest access road the
culvert can be extended with pipe sections and couplers without disturbing the previous
installation.
All culverts should be installed to comply with the MNR guidelines:
CSP Culvert Installation at Water Crossings on Forest Access Roads, 1996
Guidelines for Culverts Installed in Winter, 1996
To achieve the design criterion of meeting engineering and fisheries objectives, it is important that
the culverts be embedded at the correct elevation below the stream bottom; backfilled with
compacted well-graded granular backfill material; have fill slopes trimmed to a stable angle; have
rock rip rap around the pipe ends; and, have black muck and seed stabilization on fill slopes.
With construction expected to occur in winter it will be difficult to identify some creek channels
under snow cover. It is recommended that an experienced forest worker visit each culvert site
before winter to confirm the channel widths are less than 1m and that streambed slopes are less
than 1 percent. The exact culvert ends must be marked with stakes that will project above
expected snow cover to avoid problems finding the channel.
As a contingency, it is recommended that Gold Canyon Resources have available at least one
portable bridge to install in case a culvert site proves unsuitable during construction of the trail (eg
bedrock, or if the channel is wider than expected). A recommended design is shown on following
drawing. It would be suitable as a clear span bridge for any of the 12 water crossings where
culverts are planned.
Drawing 1 of 1, Temporary Bridge - General Arrangement Drawing, Oct 14/12
Deaddog Creek Bridge, Xing #1, Km 4.35
The reach to be crossed is at the transition from a riffle section upstream to a meandering slow
moving reach downstream (Photo 1). Channel width is approximately 4m. The author has not
visited the site, however information has been provided by Len Hercun (laid out road alignment)
and Kyle Emslie (DST fisheries biologist). It is proposed to install a permanent 30-foot bridge at
this location. The channel is not considered navigable, therefore Transport Canada application
and clearances are not expected to apply.
The bridge is to be constructed in accordance with the following drawing:
Drawing 1 of 1, Deaddog Creek Bridge, General Arrangement Drawing, Oct 13/12
Construction of this crossing should be straight forward. As per the DFO Operational Statement for
Clear Span Bridges, access to the far shore will be by making one return ford crossing.
Water Crossing Report Adamson Consulting Page 4 of 14
Springpole Road October 21, 2012