At the posted coordinates, you will find a memorial to a tragic event that happened in Martinez back in 1976. The first responders - fire-fighters, were just as traumatized over the deaths, that they needed to grieve as well. Go to the posted coordinates, enjoy the view and
Solve for the final coordinates as follows:
N 38 01.XYZ
W 122 08.QRS
X= first letter of surname of the 11th name listed in first column
Y= Month of event minus 5
Z= Middle Initial of fifth name in right column
Q= First letter of first word in top plaque
R= Year accident occurred minus year Martinez founded minus 100
S= Second number in day (date) that event happened.
The final cache is nearby. Use stealth when retrieving the cache.