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EPA's Vessel General Permit and Small Vessel General

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Table 26. Estimated Receiving Water Concentrations Resulting from <strong>Vessel</strong> Discharge Pollutant Loadings Under Estuary Mixing<br />

Conditions.<br />

Polutant<br />

Class<br />

Analyte Units<br />

Pre VGP <strong>and</strong> sVGP Receiving<br />

Water Average (range)<br />

Post VGP <strong>and</strong> sVGP Receiving<br />

Water<br />

Average (range)<br />

Percent Reduction<br />

Average Scenario Loading<br />

(worst-best case scenarios)<br />

Classicals Biochemical Oxygen<br />

Dem<strong>and</strong> (BOD)<br />

mg/L 0.195 (0.00629-0.915) 0.162 (0.0053-0.676) 17% (16%-26%)<br />

Classicals Hexane Extractable<br />

Material (HEM)<br />

mg/L 0.0264 (0.00146-0.0656) 0.013 (0.000701-0.0324) Approximately 50% a<br />

Classicals Silica Gel Treated<br />

HEM (SGT-HEM)<br />

mg/L 0.00684 (0.000438-0.0169) 0.00343 (0.000215-0.0089) Approximately 50%<br />

Classicals Total Residual<br />

Chlorine<br />

mg/L 0.000281 (0.0000032-0.00214) 0.000103 (0.00000238-0.00066) 63% (26%-69%)<br />

Classicals Total Suspended<br />

Solids (TSS)<br />

mg/L 0.0435 (0.00335-0.202) 0.0281 (0.0015-0.13) 35% (36%-55%)<br />

Metals Aluminum, Total μg/L 0.405 (0.0542-1.28) 0.293 (0.0357-1.02) 28% (20%-34%)<br />

Metals Arsenic, Dissolved μg/L 0.681 (0.0483-1.94) 0.68 (0.0476-1.94) Minimal change (

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