So, what to do with all the unused I's?
This is a small series of caches on a mostly unknown fire road. Parking is on pavement along a fenced off road. After parking, take the sidewalk along the right side of the fence to the trailhead. Those living in the housing development below use this trail frequently, but very few others in town knows this road exists. If you grab all of the caches in the series it's about 1 1/4 miles one way with about 600' in elevation. However, it is not a gradual climb. The first 1/3 of the trail is all uphill, the 2nd 1/3 roller coasters, and the final 1/3 is all uphill again. The road is in good condition and can be hiked or biked if you have good low gearing and good stamina. There is no shade along this trail and it can be sheltered from any breeze, so take plenty of water on hot days. As always, keep an eye out for wildlife and watch where you reach.
The last cache of the series will end at a gate. You can continue through the gate, but will be on private property where there is an easment. About another 1/4 mile up you will exit another gate to the SW and connect back up with the Runkle Fire Road. If you continue up the Runkle Fire Road you can end up at the back entrance to the old Santa Susana Field Labratory.