It is common for soaring conditions to be favourable during calm, West or Northwest wind conditions. In all of these cases it can be expected that Ottawa Intl will be using runway 25 and 32 for arriving and departing aircraft. As such, the VNC chart has overlays only for Rwy 25 and 32. Reference can be made to the actual STAR Lanrk 1 chart for Rwy 07 and 14.
The STAR Lanrk 1 is a common arrival routing into Ottawa Intl from the West for non-FMS equipped aircraft, such as B737-200 or Dash-8. This STAR services all of the runways and has a common routing up to the ASHTN intersection, at which point headings and/or vectors will be assigned to the arriving aircraft depending on the runway assigned.
If an aircraft were to remain on this arrival routing, the closest point of proximity to the centre of Pendleton Airport not be any factor to local traffic.
Sailplanes are not necessarily seen on ATC radar. ATC may have no awareness of your presence! If you are seen on ATC radar, the raw radar returns from a sailplane are often confused as a flock of birds. It is always considered to be superior airmanship to use the radio to contact the Ottawa TCA periodically to inform them of your position, altitude and intentions should you be approaching any airspace boundary or if you suspect you may be a potential conflict for other aircraft.
All descents will occur West of Ottawa. No conflict will be encountered with local Pendleton flying, however flights from Rideau Valley Soaring School (Kars) can have IFR traffic descend just North of the CYR534 (S) training area that is capped at 2500' ASL. Arriving aircraft may be cleared to approximately 6000' when approaching the ASHTN intersection when landing on Rwy 25.
Ottawa TCA assumes control of inbound IFR aircraft prior to the ASHTN intersection but typically not before the LANRK intersection. Should an IFR aircraft request to be cleared directly to an approach fix for a particular runway (ie. direct TEXAN for runway 32) while still with Toronto Centre control, Toronto Centre first must ask Ottawa TCA. Ottawa TCA will only approve clearing an aircraft directly to an intersection if there is no known traffic.
For aircraft arriving on runway 32, it is possible to see aircraft that have been cleared direct the TEXAN intersection when landing on runway 32 at any time inside the LANRK intersection! Potential for collision exists with RVSS local traffic during VFR conditions if Ottawa TCA is unaware of RVSS operations!