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New Bedford Harbor

Air Monitoring During PCB Sediment Cleanup of Acushnet River in Wood / Slocum Street Area

No airborne PCB levels were detected that posed a health risk to cleanup workers or area residents during the five months of excavation work in the Acushnet River. The cleanup of PCB contaminated sediment in the Wood / Slocum Street and Sawyer Street areas is complete, resulting in 6.5 acres cleaned to EPA’s standards.

From 11/18/03 to 2/10/03: results from 51 individual PCB air samples (listed below) ranged from 0.2 to 100 ng/m3 (nanograms per cubic meter of air - a nanogram is one-billionth of a gram).

Airborne PCB concentrations below 1,000 ng/m3 for adult workers are considered safe by the National Institute for Occupational Safety and Health.

In addition to this work-place standard, EPA tracks the amount of measured airborne PCBs over time and compares these amounts to an action level. Because the airborne PCB levels are extremely low, even the highest results fall far below the level requiring any corrective action.

Sample Location Date Airborne PCB Levels*
New Bedford - Sawyer Street Cell 1: North
03/19/03
15 ng/m3
New Bedford - Sawyer Street Cell 1: East
03/19/03
24 ng/m3
New Bedford - Sawyer Street Cell 1: West
03/19/03
35 ng/m3
* Airborne PCB concentration (in billionths of grams per cubic meter of air, or ng/m3)
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
02/25/03
0.2 ng/m3
Acushnet - River View Park
02/25/03
1 ng/m3
Acushnet - River Street Parking Lot
02/25/03
2 ng/m3
New Bedford - Former Lumberyard
02/25/03
0.3 ng/m3
New Bedford - Near Wood Street Bridge
02/25/03
1 ng/m3
New Bedford - Sawyer Street Cell 1: North
02/25/03
1 ng/m3
New Bedford - Sawyer Street Cell 1: East
02/25/03
100 ng/m3
New Bedford - Sawyer Street Cell 1: West
02/25/03
1 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
02/10/03
3 ng/m3
Acushnet - River View Park
02/10/03
5 ng/m3
Acushnet - River Street Parking Lot
02/10/03
6 ng/m3
New Bedford - Former Lumberyard
02/10/03
5 ng/m3
New Bedford - Near Wood Street Bridge
02/10/03
12 ng/m3
New Bedford - Sawyer Street Cell 1: North
02/10/03
14 ng/m3
New Bedford - Sawyer Street Cell 1: East
02/10/03
30 ng/m3
New Bedford - Sawyer Street Cell 1: West
02/10/03
4 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
01/23/03
0.2 ng/m3
Acushnet - River View Park
01/23/03
3 ng/m3
Acushnet - River Street Parking Lot
01/23/03
13 ng/m3
New Bedford - Former Lumberyard
01/23/03
0.3 ng/m3
New Bedford - Near Wood Street Bridge
01/23/03
3 ng/m3
New Bedford - Sawyer Street Cell 1: North
01/23/03
0.3 ng/m3
New Bedford - Sawyer Street Cell 1: East
01/23/03
46 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
01/08/03
7 ng/m3
Acushnet - River View Park
01/08/03
21 ng/m3
Acushnet - River Street Parking Lot
01/08/03
16 ng/m3
New Bedford - Former Lumberyard
01/08/03
8 ng/m3
New Bedford - Near Wood Street Bridge
01/08/03
9 ng/m3
New Bedford - Sawyer Street Cell 1: North
01/08/03
8 ng/m3
New Bedford - Sawyer Street Cell 1: East
01/08/03
23 ng/m3
New Bedford - Sawyer Street Cell 1: West
01/08/03
3 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
12/30/02
1 ng/m3
Acushnet - River View Park
12/30/02
1 ng/m3
Acushnet - River Street Parking Lot
12/30/02
2 ng/m3
New Bedford - Former Lumberyard
12/30/02
2 ng/m3
New Bedford - Wood Street Bridge
12/30/02
2 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
12/12/02
1 ng/m3
Acushnet - River View Park
12/12/02
3 ng/m3
Acushnet - River Street Parking Lot
12/12/02
5 ng/m3
New Bedford - Former Lumberyard
12/12/02
2 ng/m3
New Bedford - Wood Street Bridge
12/12/02
6 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
11/26/02
1 ng/m3
Acushnet - River View Park
11/26/02
2 ng/m3
Acushnet - River Street Parking Lot
11/26/02
3 ng/m3
New Bedford - Former Lumberyard
11/26/02
1 ng/m3
New Bedford - Wood Street Bridge
11/26/02
6 ng/m3
 
Sample Location Date Airborne PCB Levels
Acushnet - Main Street
11/18/02
1 ng/m3
Acushnet - River View Park
11/18/02
3 ng/m3
Acushnet - River Street Parking Lot
11/18/02
5 ng/m3
New Bedford - Former Lumberyard
11/18/02
1 ng/m3
New Bedford - Wood Street Bridge
11/18/02
4 ng/m3
* Airborne PCB concentration (in billionths of grams per cubic meter of air, or ng/m3)