Jenpeg Weather Station

Objective

To broaden the exisiting network, ECCC intends to install a new automatic weather station at the Jenpeg Airport. In order to facilitate this, some aspects of the installation will be performed by contractor. These include:

• Earth work for pad foundation
• Excavation and installation of new concrete piles
• Trenching and installation of new cabling
• Installation of power distribution equipment

2.0 Reference Documents:

Site map, drawings, and photos are included as references

3.0 Tasks:

3.1 Pad:

1. Supply and deliver suitable fill-soil
   1. Estimated to be 300 yards
2. Construct raised pad and approach
   1. Pad Dimensions
      1. 30m x 30m width
      2. 0.25m depth
   2. Approximate Approach Dimensions
      1. 10m length
      2. 3m width
      3. 0.25m depth
3. Level and grade the pad/approach, tapering edges

   3.2 Concrete:

1. Excavation of 8’ depth
   1. 13 holes, to accommodate 24” dia. form tube
   2. 2 holes, to accommodate 18” dia. form tube
   3. 4 holes, to accommodate 12” dia. form tube
2. Concrete Forms
   1. 24” dia. form tube, as required
   2. 18” dia. form tube as required
   3. 12” dia. form tube as required
3. Concrete
   1. 25 MPa
   2. Fill 19 cylindrical piles, listed above
   3. Trowel finished surface, slightly domed to encourage water runoff
4. Additional Materials
   1. Rebar for three piles as detailed in drawing GT-C-S2
      1. 20 m (or equivalent), vertical
      2. 10 m (or equivalent), square ring
5. Installation of threaded rods/anchors & conduit

   Note:

   The composition of the ground may not allow excavation to the prescribed depths. If shallower than 3’, threaded rod should be anchored to the bedrock.

   3.3 Electrical:

1. Install Electrical Service
   1. Supply and install 100 amp 120V distribution panel with a minimum of 12 breaker positions housed within appropriate outdoor enclosure.
   2. Panel to be mounted behind main instrumentation junction box.
   3. Apply for electrical permit with Manitoba Hydro on ECCCs behalf.
   4. Supply and install meter socket, and connection to distribution panel. Meter socket must be able to support 100 amp service.
   5. Supply and install suitable vertical conduit to accommodate underground service feed.
   6. If required, trench and backfill from meter to Hydro feed.
      Estimated to be 50m.

2. Install Weather Station Cabling

1. Excavate approximately 150 metres of trench for cable installation
2. All trenches to be at least 24” deep or as per electrical code
   1. Area is a non-vehicular area
3. Apply flagging and warning tapes to mark signal and power cable when backfilling
4. If required, supply and install screened sand in trenches, as per electrical code
5. One electrical cable to be pulled from the distribution panel, and one run of instrumentation cable from Main Junction Box to each instrument base
   1. 8" minimum electrical power and signal cable separation for parallel cable run
   2. 4" minimum electrical power and signal cable separation for perpendicular cable crossing
6. One electrical cable to be installed from electrical distribution panel to Main Junction Box terminal strip
7. All power cables to be terminated at each end. Each power cable to be terminated on a separate 15 amp breaker in the distribution panel, and a duplex receptacle housed in an ECCC supplied enclosure at each instrument base.

3. Snow Target Excavation

Three holes to be excavated at locations shown in attached drawing (Black Squares). Holes to be 50”x50”x8” deep.