Hanson, JimMcConnell, TedJim Hanson and Ted McConnell looked at whether decreasing nutrients into the Bay could cost less if trading is permitted. Rather than having the sewage treatment plants install new technology (high cost), these sewage plants could pay farmers to plant more cover crops (low cost) to meet the nitrogen loading goals.en-USnutrient pollutioncover cropsMarylandnutrient tradingcover cropsFlush TaxTechnical Report