I understand you are concerned about the large number of cones that your evergreen tree is producing this year. There may be two factors which might be contributing to the cone production being excessive: the climate and the cycles of cone production. At the end of last summer, we had a long drought period which can cause trees to produce an abundance of cones. That drought extended into the fall. Conifers or cone bearing trees are also cyclical in cone production with cycles running every two to three years. It sounds like this might be your year. From what you have indicated there are no other concerns about the health of the tree so I don’t think there will be any long-term effects due to this heavy cone crop. This appears to be a well-established tree so most likely does not need additional water when we are getting plenty of rainfall but in times of drought and into a dry fall like this last one you may want to give it additional water to insure it’s health. After my sprinkler system was turned off and into December I was still out with buckets watering my trees, esp. the new evergreens.  Here is some additional information on watering from the arbor day foundation: Winter Tree Watering Tips | Arbor Day Blog