Improper Oil Spill Disposal

An oil pimping jack is in service located along the bike path near where the new extension (to Taft Highway) begins. We (my riding partner and I) have observed a significant and progressing spill accumulating over the prior weeks (6 weeks or more); the berm was full of spilled oil the week before. However, on June 5th, I noticed a nonsensical spreading of fertilizer along the bike path (no plants, grass, or watering system) that extended for nearly a mile. I also noticed the spill was removed and could see the evidence of heavy equipment operations at the pump-jack site. On this day (Saturday) the odor of the fertilizer was prominent, but the odor of hydrocarbons was also noticeable.
I believe the spill I observed prior was recovered and mixed into the fertilizer, then spread along the path leading to a much bigger and harmful environmental issue.