In a former life I might have been a pharmacist. In the word sleuth are a lot of words all having a connection to pharmacy. There are some diseases, some remedies, some subjects a student pharmacist has to study and some other words that just have a nice sound.
All the words are found in a standard dictionary, but some are rather old fashioned and probably not used much today..... and oh yes...each word starts with P.
Most are in straight lines, up, down, across or diagonal, but some turn corners and some double back on themselves. I have been kind and given you a start... see the shaded words POISON and PHYSIC.
There are 44 words altogether. Once you have crossed out all of those, you will be left with 8 spare letters. These are the coordinates going from Left to Right row by row in the form
s32 0*.*** e115 5*.***
The cache is a nano, but it is inside special packaging. Keep looking until you find the log. The outermost container is a regular size plastic cliplock container.
You can check your answers for this puzzle on GeoChecker.com.