Nathan Gay wants to see a driver in the field with the vacuum pump working overtime rather than standing over a propped-open truck hood in the shop.The owner of A-1 Environmental Services in Wells, Maine, figures that his company is generating income whenever pumps are whirring, and blowing out profits whenever a truck is down and out of service. So a solid truck maintenance program and regular vehicle replacement are keys to the success of Gay’s diverse company, which offers septic-pumping, portable restrooms and roll-off containers in Maine’s more populated southern region. A-1 continually rotates service vehicles out of its
