Hemlockiana Mystery Cache
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The cache is NOT at the posted coordinates.
This cache honors that great NorCal Reviewer, Hemlock. Make sure you jot down that code at the top of the logbook. You'll need it for another cache in the future.
He has done more for geocaching than I'll likely ever know about. I do know that he is incredibly patient with newbies, and that he will work with cache owners to see what changes they could make to get their caches published. He also has a good sense of humor, which I'm sure has got to be an asset if you're a reviewer. He has been cache-honored before--check out some quality hides from 47Dad47.
To solve this puzzle, you'll want to keep in mind that magic distance of 528 feet. Keep your distance! Hemlock knows why it's important, and you should too!
I'll start you out with N38, W121, but you will have to find the other 10 digits yourself. You may find Hemlock not far from these 10 spots:
N 33° 20.788 W 105° 40.873
N 39° 57.306 W 075° 36.389
N 43° 10.314 W 070° 52.977
N 31° 03.788 W 097° 23.346
N 38° 04.546 W 077° 47.960
N 44° 55.008 W 092° 58.024
N 52° 58.214 W 122° 27.367
N 44° 03.810 W 070° 53.042 (forget Ridge Road)
N 41° 10.780 W 073° 47.764
N 30° 26.196 W 088° 54.842

You can validate your puzzle solution with certitude.
FTF prize reused from a JN hide!
Additional Hints
(Decrypt)
CHM: tb jvgu Tbbtyr sbe fgerrg znccvat, engure guna Tnezva ZncFbhepr; nppbeqvat gb bar pnpure, Tnezva tvirf gur jebat nafjre!
UVQR: ehfgl, abegu bs chmmyr fbyhgvba
Treasures
You'll collect a digital Treasure from one of these collections when you find and log this geocache:

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