About 10 years ago, Johnny On the Spot (JOTS), a portable restroom operator based in Old Bridge, New Jersey, retooled an existing on-site transfer station so it could send waste directly into a local municipal sewer line. The result: A dramatic dip in operating expenses, such as fuel and labor costs; reduced dumping fees; and less wear and tear on vehicles.While former JOTS owner Jesse Thompson declined to disclose exactly what the company invested in revamping the transfer station, he says it paid for itself after just 22 months in operation. (Thompson recently sold the firm to equity investors and
