An environmental engineer is proposing a new approach for monitoring high colony counts of E. coli and other bacteria in watershed area hot spots. Estimates are tabulated, and the MARR is 8% per year. What is the present worth of the proposed project? Cash Flows Initial cost, $ -100,000 Annual operating cost, -30,000 in year 1; costs $ per year increase by 5000 each year Life, years 5