You may have noticed the backhoes and water tanks visiting Chesebro National Park recently. Southern California Gas is conducting tests to check the structural integrity of their high transmission line that intersects the park and the Old Agoura neighborhood.
It takes the Gas Co about a month to get a permit since the county requires a biologist and an archeologist be present, and to monitor the safety of the park patrons who may be in the vicinity. The testing was purposely near where there is public activity - in this case, on trails popular with horseback riders and hikers.
A core sample is taken from the pipe to check for any deterioration.
The testing is not related to the mandated hydro-pressure testing required since the San Bruno pipeline explosion, nor is it related to the Porter Ranch leak.