this portal has been placed incorrectly to be at the only point where the trail on one side of the highway can be reached from the parking lot on the other. It is approximately .06 miles from the 4.5 mile trail marker. The 4.5 mile trail marker is next to the blue portal here (Chester Valley Trail Marker). The misplaced 4.25 marker is visible in the background. Clearly it is way too close.
Fyi, Ingress is no longer part of Wayfarer. Any decision here will not reflect in that game. To get it moved in Ingress, I believe the correct way to report it is here: Reporting a Wayspot — Recon Help Center
should be moved/removed in all games. Submitted it through Ingress (after the split) and got the rejection which links to here. The link you provided (thank you) does not have an appeal section and tells me to submit through the game. Seems like an endless loop.
If you want to try to get the location corrected, then you could use help chat at Niantic Wayfarer . You can submit the geotagged photos there. But I would wait and see how they reply to this rejected removal report appeal before I would ask help chat to do it, since sometimes staff will uphold the rejection but make the correction.