A darker side of pot growing Diesel, oil contamination a slippery, but serious problem By John Driscoll The Times-Standard The cost of a pound of marijuana on the street may not reflect the steep cost to the land where it was grown and to people living nearby. With the ongoing trend of moving big marijuana grows indoors, drug enforcement agents are frequently uncovering serious environmental contamination problems. Mostly, the pollution is from diesel generators used to power energy-hogging sodium lights and ventilation equipment needed to grow high potency marijuana indoors. A below-standard diesel storage tank, and improper disposal of...