Appendix D Debris Disposal Documentation · loN! I cert i fy to the beet of NO HAZARDUS Totel FeeE Total T icket under p€nslt y of Periury 6y knowledge and bel ief. T]R UNRCCEFTAELE

AECOM Phase IV Status Report #3 Environment

W:\Concord\105627 - MBTA\PROJ\TO-1 Readville\Phase IV Status Report #3\Final Draft\Final Status Report #3.docx November 2011

Appendix D Debris Disposal Documentation

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Metal

Miscellaneous Solid Waste

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Appendix E Bills of Lading



Appendix F Air Monitoring Reports

AECOM 978.905.2100 tel 250 Apollo Drive 978.905.2101 fax Chelmsford, MA 01824

August 2011 Page 1 of 9

R:\AirDBase\Readville_Yard5_MBTA\Reports\2011-0718-0721-Baseline\MBTA_Readville_Baseline_AMP_Baseline_Report_2011-0718-0722.docx

Baseline Air Monitoring Summary Client: MBTA

Location: Yard 5, Readville, MA

Period: Baseline: July 18 – July 20, 2011

This baseline ambient data summary includes tabular summaries of the ambient air-quality data collected in accordance with the project’s Air Monitoring Plan (AMP) June 2010 at the MBTA Yard 5 Property in Readville, MA for the report period indicated above. Hand-Held PM10 Monitoring Summary During the reporting period there were no instances of elevated respirable particulate matter (i.e., particle sizes less than 10 microns in diameter - PM10) concentrations greater than the Action Level. The following tables summarize the real-time PM10 concentrations:

Table 1: Daily Average and Maximum PM10 Concentrations; and

Table 2: Elevated PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The results from the “worst-case”, i.e., highest compound concentrations, from each sampling period through July 20, 2011 were used to calculate a running average for lead and arsenic. The results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures:

Table 3: 8-Hour Lead and Arsenic Concentrations; Table 4: Prioritized Program Average Lead and Arsenic Concentrations; Figure 1: THI and TRI Based on the Prioritized Lead and Arsenic Concentrations; and Figure 2: Program-to-Date Average Prioritized Fenceline Lead and Arsenic Sampling Results.

Other Project Information The locations of the hand-held monitoring were conducted at various locations along the Site perimeter. The locations are shown in the following figure:

Figure 3: Site Map. Special Comments

Lead and arsenic samples were collected however, a laboratory error resulted in the samples being analyzed incorrectly using the wrong laboratory method. The results were reported with minimum detection limits significantly greater than those from the correct ambient air method. The arsenic concentration results were not representative of ambient air concentrations due to a high minimum detection limit, therefore, were not included in the air monitoring summary. Lead

AECOM Environment



concentrations results were, however, more representative of ambient air and are included herein. The laboratory method was corrected following the August 5, 2011 samples. No soil intrusive activities occurred during the sampling period. Baseline air monitoring took place from July 18, 2011 through July 20, 2011 to quantify the site’s existing pre-remedial conditions (i.e., “baseline levels”) of site-specific contaminants in addition to allowing a shake-down period for the AM operations.

Note that since no intrusive activities occurred during the sampling period, and due to issues with the arsenic analytical method, a THI and a TRI were not calculated. In addition, no samples were prioritized for lead and arsenic analysis to facilitate the timely evaluation of Site conditions. The THI and TRI will be calculated and sample will be prioritized for analysis once intrusive site activities begin and the proper analytical methods are used.

AECOM Environment



Table 1: Daily Average and Maximum PM10 Concentrations

Perimeter

Average (µg/m3)

Perimeter

Maximum (µg/m3)

Location of

Maximum

Comments

Mon 07/18/11 98 134 West Baseline monitoring

Tue 07/19/11 68 98 Northeast Baseline monitoring

Wed 07/20/11 60 108 Northeast Baseline monitoring

Thu 07/21/11 NA NA NA

Fri 07/22/11 NA NA NA

Definitions:

PM10 =

µg/m3 =

NA =

ND =

Respirable Particulate Matter

Micrograms per cubic meter

Not Applicable

No Data

Notes:

- Highlighted concentrations require further analysis based on background concentrations, onsite activities and offsite activities (see Table 5). - Daily average concentrations are estimated from the hand-held concentrations.

AECOM Environment



Table 2: Elevated PM10 Concentration Summary

Parameter Date Location Time Wind

Conditions Elevated

Concentration Background

Final Concentration

Explanation

NA NA NA NA NA NA NA NA

Definitions:

PM10 =

NA =

ND =

Respirable Particulate Matter measured in micrograms per cubic meter (µg/m3)

Not Applicable

No Data

Notes:

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Table 3: 8-Hour Lead and Arsenic Concentrations

Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

7/18/11:

Lead 0.37 0.40 0.38 0.40

Arsenic ND1 ND1 ND1 ND1

7/19/11:

Lead 0.38 0.38 0.38 0.37


7/20/11:

Lead 0.37 0.41 0.38 0.38


Definitions:

NA =

ND =

Bold =

Italics =

Not Applicable

No Data

Compound was analyzed for, and detected above the laboratory reporting limit.

Compound was analyzed for, but not detected above the laboratory reporting limit (reported above as half the reporting limit).

Notes: 1 Arsenic samples were collected; however, a laboratory error resulted in the samples being incorrectly analyzed using the wrong analytical

method. Therefore, the arsenic concentration results were not representative of ambient air concentrations due to a high minimum detection

limit.

Samples collected for 8-10 hrs, Monday-Friday.

Laboratory results are reported between 7-10 days after sample collection.

At the end of each day one sample will be prioritized based on the meteorological conditions to be analyzed within 24-hours.

Analysis conducted in accordance with the requirements of the USEPA or NIOSH 7300 methods.

AECOM Environment



Table 4: Prioritized Program Average Lead and Arsenic Concentrations

Lead (mg/m3)

Arsenic (mg/m3)

Total Hazard Index4,5

(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)

8-Hour Program-to-date average 1 NA NA NA NA

8-Hour Predicted Concentration at the Nearest off-site Receptor 2,3

NA NA NA NA

Acceptable Ambient Concentration NA NA NA NA

Definitions:

THI =

The Hazard Index (HI) was calculated for lead and arsenic by dividing the constituent concentration by the appropriate risk-

based criteria for non-carcinogenic effects (C air-nc). The sum of the HIs for all non-carcinogenic constituents is defined as

the Total Hazard Index (THI). A THI value less than 1.0 indicates that the combined effect of lead and arsenic is not likely to

pose a significant health risk.

TRI =

The Risk Index (RI) was calculated for the arsenic by dividing the predicted concentration by the appropriate risk-based criteria associated with a 1 x 10-6 excess cancer risk (C air-c). The sum of the RIs for constituents is defined as the Total Risk Indiex (TRI). A TRI value less than 1.0 indicates that arsenic is not likely to pose an excess cancer risk greater than 1x10-6.

Notes:

1 Using results from prioritized samples (i.e. worst-case from each sampling period). 2 Represents data from various locations at varying times and is not appropriate for comparison to the AAC. 3 Using dispersion factor (0.09) for the closest receptor (assumed to be 50 meters from the fenceline). 4 Estimates combined effect of each constituent at receptor location over the duration of the program (potential risk if > 1) 5 Assumes exposure 8 hrs/day, 5 days/week over the duration of the remediation program (assumed to be 6-months).

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Figure 1: THI and TRI Based on the Prioritized Lead and Arsenic Concentrations

Notes:

1 A THI and TRI will be calculated once intrusive remedial activities begin.

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Figure 2: Program-to-Date Average Prioritized Fenceline Lead and Arsenic Sampling Results

Notes: 1 Samples will be prioritized for expedited sample analysis once intrusive activities begin.

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Figure 3: Site Map

Legend N – North Air Monitoring Location NE – Northeast Air Monitoring Location S – South Air Monitoring Location SW – Southwest Air Monitoring Location Met – Meteorological Tower



R:\AirDBase\Readville_Yard5_MBTA\Reports\2011-0725-0729\MBTA_Readville_Weekly_AMP_Report_2011-0725-0729.docx

Weekly Air Monitoring Summary Client: MBTA


Period: July 25 – July 29, 2011

This weekly ambient data summary includes tabular summaries of the ambient air-quality data collected in accordance with the project’s Air Monitoring Plan (AMP) June 2010 at the MBTA Yard 5 Property in Readville, MA for the report period indicated above. Hand-Held PM10 Monitoring Summary During the reporting period there were no instances of elevated respirable particulate matter (i.e., particle sizes less than 10 microns in diameter - PM10) concentrations greater than the Action Level. The following tables summarize the real-time PM10 concentrations:


Table 2: Elevated PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The results from the “worst-case”, i.e., highest compound concentrations, from each sampling period through July 29, 2011 were used to calculate a running average for lead and arsenic. The results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures:




Lead and arsenic samples were collected however, a laboratory error resulted in the samples being analyzed incorrectly using the wrong laboratory method. The results were reported with minimum detection limits significantly greater than those from the correct ambient air method. The arsenic concentration results were not representative of ambient air concentrations due to a high minimum detection limit; therefore, were not included in the air monitoring summary. Lead

AECOM Environment



concentrations results were; however, more representative of ambient air and are included herein. The laboratory method was corrected following the August 5, 2011 samples. No ground intrusive activities occurred during the monitoring and sampling period. Onsite activities included grubbing (or clearing trees and scrubs). Note that since no intrusive activities occurred during the sampling period and due to issues with the arsenic analytical method, a THI and a TRI were not calculated. The THI and TRI will be calculated and samples will be prioritized for analysis once intrusive site activities begin and the proper analytical methods are used.

AECOM Environment




Perimeter

Average (µg/m3)

Perimeter

Maximum (µg/m3)

Location of

Maximum

Comments

Mon 07/25/11 23 41 Southwest

Tue 07/26/11 NA NA NA No dust monitoring conducted due to heavy rain the night before.

Wed 07/27/11 18 45 North

Thu 07/28/11 19 42 Southwest

Fri 07/29/11 38 90 Northeast

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:

Highlighted concentrations require further analysis based on background concentrations, onsite activities and offsite activities (see Table 5). Daily average concentrations are estimated from the hand-held concentrations.

AECOM Environment





Conditions Elevated


Final Concentration

Explanation


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

7/25/11:

Lead 0.40 0.40 0.39 0.39


7/26/11

Lead NA2 NA2 NA2 NA2

Arsenic NA2 NA2 NA2 NA2

7/27/11:

Lead 0.44 0.44 0.44 0.41


7/28/11:

Lead 0.42 0.41 0.41 0.42


7/29/11:

Lead 0.41 0.41 0.41 0.41


Definitions:

NA =

ND =

Bold =

Italics =

Not Applicable

No Data





limit. 2 No data collected due to heavy rains the night before.





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)

8-Hour Program-to-date average 1 0.41 NA - -


0.037 ND ND ND

Acceptable Ambient Concentration 1.5 0.182 - -

Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes:

1 A TRI will be calculated once the laboratory corrects the analysis method.

AECOM Environment





AECOM Environment



Figure 3: Site Map







Period: August 1 – August 5, 2011

This weekly ambient data summary includes tabular summaries of the ambient air-quality data collected in accordance with the project’s Air Monitoring Plan (AMP) June 2010 at the MBTA Yard 5 Property in Readville, MA for the report period indicated above. Hand-Held PM10 Monitoring Summary During the reporting period there were no instances of elevated respirable particulate matter (i.e., particle sizes less than 10 microns in diameter - PM10) concentrations greater than the Action Level. The following tables summarize the real-time PM10 concentrations:


Table 2: Elevated PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The results from the “worst-case”, i.e., highest compound concentrations, from each sampling period through August 3, 2011 were used to calculate a running average for lead and arsenic. The results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures as they become available from the laboratory:




Lead and arsenic samples were collected; however, a laboratory error resulted in the samples being analyzed incorrectly using the wrong laboratory method. The results were reported with minimum detection limits significantly greater than those from the correct ambient air method. The arsenic concentration results were not representative of ambient air concentrations due to a high minimum detection limit; therefore, were not included in the air monitoring summary. Lead

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concentrations results were; however, more representative of ambient air and are included herein. The laboratory method was corrected following the August 5, 2011 samples. No ground intrusive activities occurred during the monitoring and sampling period. Onsite activities included moving debris into separate piles. Note that since no intrusive activities occurred during the sampling period and due to issues with the arsenic analytical method, a THI and a TRI were not calculated. The THI and TRI will be calculated and samples will be prioritized for analysis once intrusive site activities begin and the proper analytical methods are used.

AECOM Environment




Perimeter

Average (µg/m3)

Perimeter

Maximum (µg/m3)

Location of

Maximum

Comments

Mon 08/01/11 35 65 Northeast

Tue 08/02/11 50 142 Northeast

Wed 08/03/11 28 46 Southwest

Thu 08/04/11 26 30 Southwest

Fri 08/05/11 22 38 Southwest

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:

Highlighted concentrations require further analysis based on background concentrations, onsite activities and offsite activities (see Table 2). Daily average concentrations are estimated from the hand-held concentrations.

AECOM Environment





Conditions Elevated


Final Concentration

Explanation

NA NA NA NA NA NA NA NA NA

Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/01/11:

Lead 0.42 0.41 0.41 0.40*


08/02/11

Lead 0.40 0.39 0.39 0.39*


08/03/11:

Lead 0.41* 0.40 0.40 0.40


Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data



Indicates that the sample was prioritized.



limit.





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)

8-Hour Program-to-date average 1 0.407 ND - -


0.037 ND ND ND


Definitions:

THI =





TRI =


Notes:


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Notes:

1 A TRI and TRI will be calculated once the laboratory corrects the analysis method.

AECOM Environment





AECOM Environment



Figure 3: Site Map








This weekly ambient data summary includes tabular summaries of the ambient air-quality data collected in accordance with the project’s Air Monitoring Plan (AMP) June 2010 at the MBTA Yard 5 Property in Readville, MA for the report period indicated above. Hand-Held PM10 Monitoring Summary During the reporting period there were no measured instances of elevated respirable particulate matter (i.e., particle sizes less than 10 microns in diameter - PM10) concentrations greater than the Action Level. The following tables summarize the real-time PM10 concentrations:


Table 2: Elevated Hand-Held PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The lead and arsenic sample results collected between August 4 and August 10, 2011 are included herein. Additionally, the results from the prioritized or “worst-case”, i.e., highest lead and arsenic concentrations, from each sampling period through August 12, 2011 were used to calculate a running average for lead and arsenic. The analytical results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures on a weekly basis as they become available from the laboratory:


Other Project Information Additional information related to the air monitoring activities during the report period are included in following table and figure:

Table 5: Site activities; and Figure 3: Site Map

AECOM Environment



Special Comments

Lead and arsenic samples were collected; however, a laboratory error resulted in the samples being analyzed incorrectly using the wrong analytical method. The results were reported with reporting limits significantly greater than those from the appropriate analytical air method. The arsenic concentration results were not representative of ambient air concentrations due to a high reporting limit; therefore, were not included in the air monitoring summary. The lead concentration results were however, more representative of ambient air and are included herein. The laboratory analytical method was corrected on August 8, 2011 and the results of both lead and arsenic analysis are included herein. THI and TRI values were calculated for samples collected on and after August 8, 2011.

During the monitoring and sampling period, no ground intrusive activities were conducted. Onsite activities included moving debris into separate piles for removal from the site.

AECOM Environment




Perimeter Average

Concentration (µg/m3)

Perimeter Maximum


Location of Maximum Daily Concentration

Comments


Tue 08/09/11 24 34 Southwest


Thu 08/11/11 15 51 Northeast

Fri 08/12/11 15 23 West

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:

Highlighted concentrations require further analysis based on background concentrations, onsite activities and offsite activities. Daily average concentrations are estimated from the hand-held concentrations.

AECOM Environment



Table 2: Elevated Hand-Held PM10 Concentration Summary


Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:

PM10 concentrations remained below the Action Level (<150 µg/m3).

AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/04/11

Lead 0.40 0.39 0.39* 0.39


08/05/11

Lead 0.41 0.40 0.41* 0.41


08/08/11:

Lead 0.085 0.085 0.085 0.085*

Arsenic 0.085 0.085 0.085 0.085*

08/09/11

Lead 0.080 0.080* 0.085 0.085

Arsenic 0.080 0.080* 0.085 0.085

08/10/11

Lead 0.090* 0.090 0.090 0.085

Arsenic 0.090* 0.090 0.090 0.085

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data

Compound was analyzed for, and detected above the laboratory Reporting Limit.

Compound was analyzed for, but not detected above the laboratory reporting limit (reported above as half the Reporting Limit).


Notes: 1 Arsenic samples were collected; however, a laboratory error resulted in the samples being analyzed using the wrong analytical method.

Therefore, the arsenic concentration results were not representative of ambient air concentrations due to a high Reporting Limit.


Laboratory results are reported approximately 7-10 days after sample collection.

At the end of each day one sample will be prioritized based on the meteorological conditions and analyzed within 24-hours.

Analysis conducted in accordance with the requirements of NIOSH 7300 method on samples collected on and after August 8, 2011.

AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)

8-Hour Program-to-Date Average 1 0.291 0.084 - -


0.026 0.008 0.059 0.016


Definitions:

THI =





TRI =

The Risk Index (RI) was calculated for arsenic by dividing the predicted concentration by the appropriate risk-based criteria associated with a 1 x 10-6 excess cancer risk (C air-c). The sum of the RIs for constituents is defined as the Total Risk Indiex (TRI). A TRI value less than 1.0 indicates that arsenic is not likely to pose an excess cancer risk greater than 1x10-6.

Notes:

1 Using results from prioritized samples (i.e. worst-case from each sample day) beginning August 8, 2011. 2 Represents data from various locations at varying times and is not appropriate for comparison to the AAC. 3 Using dispersion factor (0.09) for the closest receptor (assumed to be 50 meters from the fenceline). 4 Estimates combined effect of each constituent at receptor location over the duration of the program (potential risk if > 1) 5 Assumes exposure 8 hrs/day, 5 days/week over the duration of the remediation program (assumed to be 6-months).

AECOM Environment




Notes:

THI and TRI remain below the end-of-program goal of 1.0.

AECOM Environment




Notes: Prioritized samples are evaluated to ensure they represent the “worst-case” sampling and are updated as necessary.

AECOM Environment



Table 5: Site Activities

Site Activities

Mon 8/8/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Finish pile S21-A Area. Continue making large piles of wood and concrete debris. Start picking and screening pile S22-A after condensing it. Set screener next to pile S22-A. Use large front end loader Cat 980G for moving concrete, metal debris to stock piles and dumpsters. Water truck not used based on wet conditions from recent rain event.

Grub the end of S20-A so we can see how large the pile is.

Tue 8/9/11 Air monitoring and sampling. Waste stream sampling. Segregate material, wood, concrete, metal in separate piles. Finish screening pile S22-A Area. Continue making large piles of wood and concrete debris. Start picking pile S20-D. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and

dumpsters. Water truck not used based on wet conditions from recent rain event. Tape off Pile S20 to evaluate each individual pile for future reference. Also isolate S20-A since this is the

“dirty section”

Close up end on soil containment area.

Wed 8/10/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-D Area. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and

dumpsters. Water truck not used based on wet conditions from recent rain event. Finish taping off Pile S20 to evaluate each individual pile for future reference. Finish poly on the sides of the soil containment area.

Reagent conf call

Thu 8/11/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-D and C, finish picking

S20-D. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and

dumpsters. Water truck used during reagent mixing and transporting material back and forth to soil storage area. Start blending reagent into Stock S10B and C in soil handling area.

Collect a wipe sample from the junk metal dumpster for lead, Arsenic and PCB.

Fri 8/12/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-C. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and

dumpsters. Water truck used during reagent mixing and transporting material back and forth to soil storage area. Still blending reagent into Stock S10B and C in soil handling area and S22-A. Collects confirmatory samples and disposal samples from TSP1 (200-400)(400-600)(600-700). This soil

is from S10-B, C and S22-A.

AECOM Environment



Figure 3: Site Map














AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 08/15/11 32 35 West

Tue 08/16/11 6 10 North and West

Wed 08/17/11 35 121 North


Fri 08/19/11 75 128 North

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:


AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/11/11

Lead 0.080 0.080 0.080 0.080*

Arsenic 0.080 0.080 0.080 0.080*

08/12/11

Lead 0.085* 0.085 0.085 0.085

Arsenic 0.085* 0.085 0.085 0.085

08/15/11:

Lead 0.080 0.080 0.080* 0.080

Arsenic 0.080 0.080 0.080* 0.080

08/16/11

Lead 0.080 0.085 0.085 0.080*

Arsenic 0.080 0.085 0.085 0.080*

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.021 0.007 0.052 0.015


Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes:


AECOM Environment





AECOM Environment




Site Activities

Mon 08/15/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-C up to valley. Lots of small re-bar and plastic chunks, piping in pile S20-C. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles

and dumpsters. No water truck today based on rain. Concrete being trucked off by 3 triaxles making round trips to P.A. Landers, Inc located at 351

Winter Street in Hanover MA. Work on breaking large concrete with mini JCB.

Tue 08/16/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-C up to valley

between S20-C and B. Lots of small re-bar and plastic chunks, piping in pile S20-C. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles

and dumpsters. No water truck today based on rain. Concrete being trucked off by 3 tri-axles making round trips to P.A. Landers, Inc located at

351 Winter Street in Hanover MA. Work on breaking large concrete with mini JCB in AM.

Wed 08/17/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles. Finish picking S20-C. Lots of small re-bar and plastic chunks and piping in pile S20-C. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles

and dumpsters. Start pile S20-B. Place Wiggle waggle (hay bale) along truck loading and wash area.

Thu 08/18/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles from S20-B. Lots of metal and RR ties within pile S20-B. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles

and dumpsters. Place stakes within Wiggle waggle (hay bale) strip along truck loading and wash area.

Also place gravel behind the wiggle waggle for additional support.

Fri 08/19/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles from S20-B. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles

and dumpsters. Make a stare case leading in and out of the soil handling area. Makes it easier once we use

the boot brush to walk over to the stairs and exit the soil handling area. Hydrate the haul road several times.

AECOM Environment



Figure 3: Site Map



September 2011 Page 1 of 9











AECOM Environment




Perimeter Average


Perimeter Maximum



Comments


Tue 08/23/11 16 58 Southwest

Wed 08/24/11 40 75 North

Thu 08/25/11 33 51 North

Fri 08/26/11 25 53 North

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:


AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/17/11

Lead 0.080 0.080 0.080* 0.080

Arsenic 0.080 0.080 0.080* 0.080

08/18/11

Lead 0.080 0.080* 0.080 0.075

Arsenic 0.080 0.080* 0.080 0.075

08/19/11:

Lead 0.080 0.080 0.080* 0.080

Arsenic 0.080 0.080 0.080* 0.080

8/22/11

Lead 0.085 0.085 0.085 0.080*

Arsenic 0.085 0.085 0.085 0.080*

08/23/11

Lead 0.080* 0.080 0.080 0.080

Arsenic 0.080* 0.080 0.080 0.080

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.020 0.007 0.054 0.016


Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes:


AECOM Environment




Notes:

Prioritized samples are evaluated to ensure they represent the “worst-case” sampling and are updated as necessary.

AECOM Environment




Site Activities

Mon 08/22/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-C up to valley. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and dumpsters. No water truck today based on rain. Concrete being trucked off by 3 triaxles making round trips to P.A. Landers, Inc located at 351 Winter Street in

Hanover MA. Work on breaking large concrete with mini JCB.

Tue 08/23/11 Air monitoring and sampling. Segregate material, wood, concrete, metal in separate piles. Picking pile S20-C up to valley between S20-C and B. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and dumpsters. No water truck today based on rain. Concrete being trucked off by 3 tri-axles making round trips to P.A. Landers, Inc located at 351 Winter Street in

Hanover MA. Work on breaking large concrete with mini JCB in AM.

Wed 08/24/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles. Finish picking S20-C. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and dumpsters. Start pile S20-B. Place Wiggle waggle (hay bale) along truck loading and wash area.

Thu 08/25/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles from S20-B. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and dumpsters. Place stakes within Wiggle waggle (hay bale) strip along truck loading and wash area.

Place gravel behind the wiggle waggle for additional support.

Fri 08/26/11 Air monitoring and sampling. Segregate material, wood, concrete into separate piles from S20-B. Continue making large piles of wood and concrete debris. Use large front end loader Cat 980G for moving concrete, Granite, metal debris to stock piles and dumpsters. Make a stare case leading in and out of the soil handling area. Hydrate the haul road several times.

AECOM Environment



Figure 3: Site Map







Period: August 29 – September 2, 2011



Table 2: Elevated Hand-Held PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The lead and arsenic sample results collected between August 24 and August 26, 2011 are included herein. Additionally, the results from the prioritized or “worst-case”, i.e., highest lead and arsenic concentrations, from each sampling period through September 2, 2011 were used to calculate a running average for lead and arsenic. The analytical results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures on a weekly basis as they become available from the laboratory:




AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 08/29/11 8 13 Northeast and North



Thu 09/01/11 41 70 North

Fri 09/02/11 ND1 ND1 ND1

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data 1 No on site work performed due to broken excavator.

Notes:


AECOM Environment





Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:


AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/24/11

Lead 0.080 0.080 0.080* 0.080

Arsenic 0.080 0.080 0.080* 0.080

08/25/11

Lead 0.080 0.080 0.48* 0.080

Arsenic 0.080 0.080 0.085* 0.080

08/26/11

Lead 0.080* 0.080 0.085 0.080

Arsenic 0.080* 0.080 0.085 0.080

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.018 0.008 0.054 0.017


Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes:


AECOM Environment





AECOM Environment




Site Activities

Mon 08/29/11 Air monitoring and sampling. Wash metal scrap with water truck. Continue screening S20-C Picking S20-B and moving concrete from this area to stock pile. Use large front end loader Cat 980G for moving soil to and from the screener. Today is the day after hurricane Irene, no damage to speak of; tarps were loose but fixed this AM. Water truck not used because the site is wet from Hurricane Irene. Fill dumpster #257 with Junk steel for disposal at Grants.

Tue 08/30/11 Air monitoring and sampling. Use large front end loader Cat 980G for moving granite and concrete to and from the debris piles. Hydrate the area several times with the water truck.

Wed 08/31/11 .Air monitoring and sampling. Use large front end loader Cat 980G for moving soil to be screened from pile S20-C. Hydrate the area several times with the water truck. Continue picking S20-B.

Thu 09/01/11 Air monitoring and sampling. Use large front end loader Cat 980G for moving soil to be screened from pile S20-C and finish screening this pile. Hydrate the area several times with the water truck.

Continue picking S20-B and Finish picking this pile.

Fri 09/02/11 No work at the Readville Yard 5 Project today.

AECOM Environment



Figure 3: Site Map







Period: September 5 – September 9, 2011



Table 2: Elevated Hand-Held PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The lead and arsenic sample results collected between August 29 and September 1, 2011 are included herein. Additionally, the results from the prioritized or “worst-case”, i.e., highest lead and arsenic concentrations, from each sampling period through September 9, 2011 were used to calculate a running average for lead and arsenic. The analytical results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorogical conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures on a weekly basis as they become available from the laboratory:




AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 09/05/11 NA NA NA Site closed for Labor Day Holiday.


Wed 09/07/11 ND ND ND Hand-held monitoring not conducted due to heavy rain. Integrated, Lead and Arsenic sampling were collected.

Thu 09/08/11 17 22 North

Fri 09/09/11 28 54 West

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:


AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

08/29/11

Lead 0.080 0.080 0.085* 0.080

Arsenic 0.080 0.080 0.085* 0.080

08/30/11

Lead 0.080* 0.080 0.085 0.080

Arsenic 0.080* 0.080 0.085 0.080

08/31/11

Lead 0.135* 0.135 0.135 0.135

Arsenic 0.135* 0.135 0.135 0.135

09/01/11

Lead 0.085 0.085* 0.085 0.085

Arsenic 0.085 0.085* 0.085 0.085

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.017 0.008 0.054 0.017


Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes:


AECOM Environment





AECOM Environment




Site Activities

Mon 09/05/11 Site closed for Labor Day Holiday (no site activities).

Tue 09/06/11 Replace hydraulic piston on excavator that broke last Friday. Decon and wash excavator in order to segregate concrete out of the soil piles in the parking lot area. This material came

from the Bridge work. Remove concrete from exclusion zone and haul to PA Landers. Start to screen S20-B in between waiting for concrete trucks. Haul out 6 truckloads of concrete totaling 118.22 tons. No water truck used today based on rain recently. NSTAR works on the west perimeter of the property to repair a power line.

Wed 09/07/11 Continue to segregate concrete out of the soil piles in the parking lot area. This material came from the Bridge work. Continue to screen S20-B. No water truck used today based on rain recently. NSTAR works on the west perimeter of the property to repair a power line. Pick up small piles of debris and place them in appropriate piles.

Thu 09/08/11 Remove granite and steel debris from perimeter of S20-A. No water truck used today based on heavy rain.

Fri 09/09/11 Remove 3 trailer dumps of rail road ties to be disposed of at Norridgewock ME. Screen S20-B using excavator and front end loader.

AECOM Environment



Figure 3: Site Map










Table 2: Elevated Hand-Held PM10 Concentration Summary. On-Going Data Evaluation Results for the THI and TRI The lead and arsenic sample results collected between September 6 and September 9, 2011 are included herein. Additionally, the results from the prioritized or “worst-case”, i.e., highest lead and arsenic concentrations, from each sampling period through September 16, 2011 were used to calculate a running average for lead and arsenic. The analytical results of the integrated sampling for lead and arsenic were incorporated into a Total Hazard Index (THI) and Total Risk Index (TRI) model. This model determines the potential effect of ambient conditions (changes in wind direction, and atmospheric stability) to estimate the airborne concentration for lead and arsenic at the nearest off-site receptor as a function of distance from the ground-level emission source, varying meteorological conditions, and duration of the monitoring period. The results of the integrated sampling and THI and TRI are included in the following tables and figures on a weekly basis as they become available from the laboratory:




AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 09/12/11 41 51 Northeast

Tue 09/13/11 71 182 North See Table 2



Fri 09/16/11 8 13 North

Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions

Elevated Concentrati

on Background

Final Concentration

Explanation

Hand-Held PM10

Tue

9/13/11 West 6:48AM

SSE

1.0 mph 160 140 20

No site activity. Elevated concentrations were caused by atmospheric conditions (high relative humidity).

Hand-Held PM10

Tue

9/13/11 North 6:52AM

SSE

1.0 mph 182 140 42


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:


AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

09/06/11

Lead 0.085 0.090 0.090* 0.085

Arsenic 0.085 0.090 0.090* 0.085

09/07/11

Lead 0.085 0.085 0.090 0.085*

Arsenic 0.085 0.085 0.090 0.085*

09/08/11

Lead 0.100 0.100* 0.105 0.090

Arsenic 0.100 0.100* 0.105 0.090

09/09/11

Lead 0.085 0.085 0.090* 0.085

Arsenic 0.085 0.085 0.090* 0.085

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.016 0.008 0.053 0.017


Definitions:

THI =





TRI =


Notes:


AECOM Environment




Notes: THI and TRI remain below the end-of-program goal of 1.0.

AECOM Environment





AECOM Environment




Site Activities

Mon 09/12/11 Remove 3 trailer dumps of rail road ties to be disposed of at Norridgewock, ME. Weight slips to be returned in near future. Continue to screen S20-B using excavator and front end loader. Excavator starts to Grub S7-A and B. Routine air monitoring and sampling conducted.

Tue 09/13/11 Screener not operating. Excavator not operating. Deacon excavator so S&R can get the machine off site and repaired. Bull dozer and front end loader used to clean around piles out in the field. Makes haul roads. Limited work done based on equipment down. Routine air monitoring and sampling conducted.

Wed 09/14/11 New excavator delivered (Cat 325 BL) and they are using that to load the screener with soil from S20-B. Hydrate area several times, things drying up quick.

Fill dumpster for waste management with plastic pipe and poly waste. Shake loose dirt off. End of day wash a small amount of metal. Routine air monitoring and sampling conducted.

Thu 09/15/11 Continue screening S20-B using both machines. Hydrate area several times. Waste Management picks up the 30 Yard dumpster # 179 that was filled with white plastic pipe and poly debris. Waste Management drops another dumpster #30272. Bill washes additional #1 metal and places into the dumpster. Grants picks up a dumpster of #1 steel in dumpster # 293. They drop a replacement #295, get weight slips in the AM. Crew finishes screening S20-B. Pick tires up around site, place in dumpster. Routine air monitoring and sampling conducted.

Fri 09/16/11 Start picking S20-A and piling soil. Hydrate area several times. Try to dig S20-A so we are matching the surrounding topography. Placing metal into pile to be washed, took the metal from the tailings pile from S20-B. Routine air monitoring and sampling conducted.

AECOM Environment



Figure 3: Site Map














AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 09/19/11 21 37 North


Wed 09/21/11 54 308 North See Table 2



Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions

Elevated Concentrati

on Background

Final Concentration

Explanation

Hand-Held PM10

Wed

9/21/11 Northeast 6:49AM

Light and

Variable 158 145 13


Hand-Held PM10

Wed

9/21/11 West 6:56AM

Light and

Variable 213 145 68


Hand-Held PM10

Wed

9/21/11 North 7:01AM

Light and

Variable 308 145 163


Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:

PM10 concentrations remained below the Action Level (<150 µg/m3) during periods of ground intrusive activities.

AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

09/12/11

Lead 0.085 0.085 0.085 0.085*

Arsenic 0.085 0.085 0.085 0.085*

09/13/11

Lead 0.080 0.080 0.080* 0.080

Arsenic 0.080 0.080 0.080* 0.080

09/14/11

Lead 0.080 0.105 0.250* 0.080

Arsenic 0.080 0.105 0.085* 0.080

09/15/11

Lead 0.085 0.085 0.080* 0.080

Arsenic 0.085 0.085 0.080* 0.080

09/16/11

Lead 0.090 0.090 0.090* 0.090

Arsenic 0.090 0.090 0.090* 0.090

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.015 0.008 0.052 0.017


Definitions:

THI =





TRI =


Notes:

1 Using results from prioritized samples (i.e. worst-case from each sample day) beginning August 8, 2011. 2 Represents data from various locations at varying times and is not appropriate for comparison to the AAC. 3 Using dispersion factor (0.09) for the closest receptor (assumed to be 50 meters from the fenceline). 4 Estimates combined effect of each constituent at receptor location over the duration of the program (potential risk if > 1). 5 Assumes exposure 8 hrs/day, 5 days/week over the duration of the remediation program (assumed to be 6-months).

AECOM Environment





AECOM Environment





AECOM Environment



Table 5: Site Activities Site Activities

Mon 09/19/11 Start screening S20-A and continue picking pile. Hydrate area several times. Finish grubbing pile S7. Haul soil out to Waste Mgt in Rochester NH from pile S21-A, total 6 trailer dumps.

Tue 09/20/11 Continue screening S20-A and continue picking pile. No hydrating area based on rainy weather conditions. Receive a 30 yard roll off dumpster from United waste (no Identification numbers Blue) for trees that were grubbed. Fill the 30 yard dumpster with trees that were grubbed. Pick metal out of the tailings pile. Prep excavator to be swapped out with the one that was repaired. Millennium collects additional samples from S20-B, C & D for disposal.

Wed 09/21/11 Continue picking S20-A , no screening. Hydrate haul areas. Remove #2 steel in dumpster #273 and replaced empty dumpster #248. Management site audit performed by Tim Markey of AECOM. Mechanic fixed screen on screener, some welds broke loose. Have weekly safety meeting. Tape off S7 and S9 locations. Locate 600 piles.

Thu 09/22/11 Continue picking S20-A , no screening. Waste management took the first dumpster of tree debris to Stoughton landfill. Start moving tailings today, truck off 2 trailer dumps of tailings to Caruso Northgate recycling center. Construction meeting and then did a site walk around. Pick metal out of tailings pile. Empty dumpster dropped for grubbed material. Collected disposal samples from 600 area.

Fri 09/23/11 Continue picking S20-A, no screening. Load out 2 trailer dumps of soil from S21-A (weight slips pending).

AECOM Environment



Figure 3: Site Map



October 2011 Page 1 of 9











AECOM Environment




Perimeter Average


Perimeter Maximum



Comments

Mon 09/26/11 37 70 West

Tue 09/27/11 85 240 North See Table 2

Wed 09/28/11 32 58 North

Thu 09/29/11 51 66 West


Definitions:

PM10 =

µg/m3 =

NA =

ND =



Not Applicable

No Data

Notes:


AECOM Environment





Conditions Elevated


Final Concentration

Explanation

Hand-Held PM10

Tues

9/27/11

Northeast

North

West

Southwest

6:59AM

7:05AM

7:08AM

7:13AM

Light and

Variable

152

240

190

227

152

0

88

38

75

Elevated concentrations were caused by atmospheric conditions (high relative humidity).

Definitions:

PM10 =

NA =

ND =


Not Applicable

No Data

Note:

PM10 concentrations remained below the Action Level (<150 µg/m3) during periods of ground intrusive activities.

AECOM Environment




Southwest (µg/m3)

West (µg/m3)

North (µg/m3)

Northeast (µg/m3)

09/19/11

Lead 0.090* 0.090 0.090 0.090

Arsenic 0.090* 0.090 0.090 0.090

09/20/11

Lead 0.085 0.085* 0.080 0.085

Arsenic 0.085 0.085* 0.080 0.085

09/21/11

Lead 0.085 0.080 0.080* 0.080

Arsenic 0.085 0.080 0.080* 0.080

09/22/11

Lead 0.085 0.085 0.085 0.080*

Arsenic 0.085 0.085 0.085 0.080*

09/23/11

Lead 0.085 0.085 0.085 0.095*

Arsenic 0.085 0.085 0.085 0.095*

Definitions:

NA =

ND =

Bold =

Italics =

* =

Not Applicable

No Data




Notes:





AECOM Environment




Lead (mg/m3)

Arsenic (mg/m3)


(Hazard > 1.0)

Total Risk Index4,5

(Risk > 1.0)



0.014 0.008 0.052 0.017


Definitions:

THI =





TRI =


Notes:

1 Using results from prioritized samples (i.e. worst-case from each sample day) beginning August 8, 2011. 2 Represents data from various locations at varying times and is not appropriate for comparison to the AAC. 3 Using dispersion factor (0.09) for the closest receptor (assumed to be 50 meters from the fenceline). 4 Estimates combined effect of each constituent at receptor location over the duration of the program (potential risk if > 1). 5 Assumes exposure 8 hrs/day, 5 days/week over the duration of the remediation program (assumed to be 6-months).

AECOM Environment





AECOM Environment





AECOM Environment



Table 5: Site Activities Site Activities

Mon 09/26/11 Continue picking S20-A. Finish picking S20-A. Continue screening S20-A. Load out 6 trailer dumps of treated soil from S10-B and C and S22-A.

Tue 09/27/11 Worked on screening S20-A pile. Load out 10 trailer dumps of treated soil from S10-B and C.

Wed 09/28/11 Worked on screening S20-A pile. Continue to pick metal out of tailings pile. Load out 8 trailer dumps of treated soil from S10-B and C.

Thu 09/29/11 Load out 6 trailer dumps of treated soil from S22-A, S10-B and C. Finish grubbing S16, S17 and S18 piles. Start picking S7 pile. No hydrating, due to wet conditions. Haul out 1 dumpster of grubbed trees and leave one empty one.

Fri 09/30/11 Load out 4 trailer dumps of treated soil from S22-A, S10-B and C. Picking S7 pile. No hydrating, due to wet conditions. Rinse metal with water truck and place in dumpsters.

AECOM Environment



Figure 3: Site Map


Documents

Appendix D Debris Disposal Documentation · loN! I cert i fy to the beet of NO HAZARDUS Totel FeeE Total T icket under p€nslt y of Periury 6y knowledge and bel ief. T]R UNRCCEFTAELE