The cache is not at the posted coordinates. You'll need to solve the word search below. The answer for this puzzle and the 7 other word list puzzles will be a single word. Enter the word in Certitude to get the final coordinates. When finding words, make sure to look before or after to make them as long as possible. After finding all 31 words with length and first letter given below, read the leftover letters for instructions.
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You can validate your puzzle solution with certitude.