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3
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T9-1
T8-2T8-1
T7-2T7-1
T6-2T6-1T4-3T4-2
T2-5T2-4T2-3T1-5T1-4
T10-1
QB01
MB05
MB03
MB02MB01
BH03
BH02
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NF24
NF22
NF21
NF20NF18
NF17NF16
NF10NF08
NF07
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NF02
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FF13
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FF11
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FF09
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70°15'W
70°15'W
70°30'W
70°30'W
70°45'W
70°45'W
71°0'W
71°0'W
42°30
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42°30
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42°15
'N
42°15
'N
42°0'
N
42°0'
N
41°45
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41°45
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Boston Harbor
Massachusetts Bay
Benthic Monitoring Constituents-- Discharge Period, September 6, 2000 - December 2003
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T9-1
T8-2
T8-1
T7-2T7-1
T6-2T6-1
T4-3T4-2 T4-1
T2-5T2-4T2-3T2-2T2-1
T1-5T1-4T1-3
T1-2T1-1
T10-1
T4/T6-1DIFFUSER44
MB03
MB02
MB01
NF24
NF23
NF22
NF21
NF20
NF19
NF18
NF17NF16
NF15
NF14
NF13NF12NF10
NF09
NF07
NF04
0 0.5 1 Kilometers
Nearfield benthic stations
Cape Cod Bay
N Sediment nutrient fluxW Contaminants3 Grain Size» Hardbottom fauna[c Softbottom fauna
) MWRA Outfall DiffusersMWRA water column nearfield
Water Depth(meter)
> 70 40 - 70 < 40
0 2.5 5 7.5 10Kilometers
Constituents sampled at Benthic Softbottom Stations
CHLOR AluminumDDT IronLAB LeadPAH MercuryPCB NickelPEST Silver
CadmiumTotal organic carbon ChromiumPercent dry weight Copper
Zinc
Constituents sampled at Benthic Nutrient Flux stationsAmmonium Efflux of dissolved inorganic carbonChlorophyll a Ammonium fluxDissolved oxygen Nitrate fluxHydrogen sulfide O2 fluxNitrate plus nitrite PO4 fluxPhaeophytin silica fluxPhosphate Urea fluxSilicateTotal nitrogen AlkalinityTotal organic carbon Redox potential discontinuityUrea Standard redox potential
Ratio of porewater mass to sedimentvolumeSalinityTemperaturePH
Clostridium perfringens
±
