Year Assessment Complete 
] 2006 
2010 
J 2007 
2011 
Hi 2008 
2012 
2009 
2014 
Segments 
BACOH 
BIGMH 
BOHOH 
BSHOH 
MATTF 
MIDOH 
] C&DOH 
] CBlTF 
] CB20H 
] CB3MH 
] CB4MH 
1 CB5MH 
CHOMH1 
CHOMH2 
CHOOH 
CHOTF 
CHSMH 
CHS OH 
CHSTF 
EASMH 
elkoh 
FSBMH 
GUNOH 
HNGMH 
LCHMH 
MAGMH 
MANMH 
| | NANMH 
| | NANOH 
[ | NANTF 
I I NORTF 
] PATMH 
1 PAXMH 
| | PAX OH 
| | PAXTF 
PISTF 
IPOCMH 
j POCOH 
3 POCTF 
gffgg POTMH 
POTOH 
J POTTF 
] RHDMH 
] SASOH 
] SEVMH 
] SOUMH 
J TANMH 
1 WBRTF 
I I WICMH 
I WSTMH 
Figure VII-4. Schedule for shallow-water monitoring of Maryland's Chesapeake Bay segments. 
Source: Maryland Department of Natural Resources 
ASSESSMENTS BASED ON REDUCED MONITORING 
The three-year assessment period was established to account for inter-annual variations 
in weather and hydrologic conditions (U.S. EPA 2003a). If conditions are seriously 
degraded, a state having fewer than three years of data can establish noncompliance by 
applying the CFD-based criteria assessment methodology as follows. 
First, at the start of a segment’s shallow-water monitoring, assume 100 percent 
compliance in all three years of the coming assessment period. Second, after the first 
year of monitoring, a state should develop a CFD based on the collected data, 
assuming all other planned sampling dates for the next two years had 100 percent 
compliance with the applicable criterion. Finally, if the resultant assessment CFD 
indicates that the segment will be in violation (compared to the applicable reference 
CFD) no matter what happens in the following two years, then conclude that the 
segment is out of compliance for the full assessment period and move the Shallow- 
water Monitoring Program to another segment. 
Shallow water Monitoring and Application for Criteria Assessment 
