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Table 3. Threshold Comparison Results for Mashpee Sewer Commission Scenarios: Popponesset Bay <br /> Comparison of TN concentrations for present conditions,threshold loading, and three modeled buildout loading scenarios for the Popponesset <br /> Bay system. TMDL/MEP threshold concentrations for Popponesset Bay are 0.380 mg/L TN for eelgrass(primary),and between 0.400 and <br /> 0.500 mg/L TN for infauna(secondary). The TMDL for all components of the Popponesset Bay system is 0.38 mg/1 total nitrogen. All <br /> scenarios meet the TMDL/MEP Thresholds. <br /> Habitat Present TMDL/MEP Scenario Option IA Scenario Option 1B Scenario Option 1C <br /> TMDL section threshold Threshold <br /> mg/L m m m mg/L <br /> Popponesset Bay-head eel ass 0.464 0.38 0.359 0.366 0.381 <br /> Mash pee River-mid to lower infauna 0.712 0.4-0.5 0.447 0.474 0.492 <br /> Shoestring Bay-upper to lower infauna 0.631 0.4-0.5 0:433 0.440 0:481 <br /> Ockwa Bay-upper infauna 0.567 0.4—0.5 `0.413 0.436 0.451 <br /> Note: shaded cells indicate Scenarios that meet TMDL/MEP thresholds for eel ass or infauna. <br />