This chart falls entirely within the limits of a No-Discharge 
Zone (NDZ). Under the Clean Water Act, Section 312, all vessels
operating within a NDZ are completely prohibited from discharging
any sewage, treated or untreated, into the waters. Commercial
vessel sewage shall include graywater. All vessels with an
installed marine sanitation device (MSD) that are navigating,
moored, anchored, or docked within a NDZ must have the MSD
disabled to prevent the overboard discharge of sewage (treated
or untreated) or install a holding tank. Regulations for the NDZ
are contained in the U.S. Coast Pilot. Additional information
concerning the regulations and requirements may be obtained from
the Environmental Protection Agency (EPA) website:
http://www.epa.gov/vessels-marinas-and-ports.