Transcript
Page 1: Benthic Monitoring Constituents -- Discharge Period ...MB02 MB01 NF24 NF23 NF22 NF21 NF20 NF19 NF18 NF17 NF16 NF15 NF14 NF12 NF13 NF10 NF09 NF07 NF04 0 0.5 1 Kilometers Nearfield benthic

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

3

3

3

3

3

N

N

N

N

N

»

»»»»

»

»

»»»»»»»

»»»»

»»

»»

»

3

3

3

3

3

3

3

3

3

3

3

3

3

3

W

W

W

W

W

W

W

W

W

W

W

W

W

W

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

BH08A

NF24

NF22

NF21

NF20NF18

NF17NF16

NF10NF08

NF07

NF05

NF02

FF14

FF13

FF12

FF11

FF10

FF09

FF07

FF06

FF05

FF04

FF01A

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

'N

42°30

'N

42°15

'N

42°15

'N

42°0'

N

42°0'

N

41°45

'N

41°45

'N

Boston Harbor

Massachusetts Bay

Benthic Monitoring Constituents-- Discharge Period, September 6, 2000 - December 2003

[c

[c

[c

[c

[c

[c [c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

[c

3

3

3

N

N

N

»

»»

»»

»

»

»»

»»

»

»»

»»

»

»

»»

»

»

»

3

3

3

3

3 3

3

3 3

3

3

3

3

3

3

3

3

3

3

3

W

W

W

W

W W

W

W W

W

W

W

W

W

W

W

W

W

W

W

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

±

Recommended