Appendix F Risk Calculations: Other BIP Sources

Transcription

1 Appendix F Calculations: Other BIP Sources Consolidated Human Health Assessment

2 Table of Contents F1.0 Introduction... F-1 F2.0 Calculation of Exposure and : Workers, Residents and General Public... F-2 Consolidated Human Health Assessment

3 F1.0 Introduction This appendix presents the calculations undertaken to characterise risks to human health for all relevant receptors and exposure pathways associated with other sources on the BIP considered in the 2017 CHHRA. The methodology adopted for the characterisation of risk is presented in Appendix A, and details relevant to the risk issues that require evaluation and exposure concentrations are presented in the main report. Consolidated Human Health Assessment F-1 P age

4 F2.0 Calculation of Exposure and : Workers, Residents and General Public Consolidated Human Health Assessment F-2 P age

5 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Residents Denison St (Adults and children) Exposure Time (ET, hr/day) 24 Assume adults and children spend all day at home where concentrations are the same indoors and outdoors Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assessment based on annual average concentrations Exposure Frequency (EF, days/yr) 365 Assume residents at home all days of the year (NEPC 2013) Exposure Duration (ED, years) 35 Duration of time at any one residence (enhealth 2012b) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-9 6% -- Vinyl chloride 8.8E E E E E-8 34% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-8 59% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) FCAP remediation 2.0E-04 10% 1.8E E E E TOTAL (excluding FCAP remediation) 1.3E Consolidated Human Health Assessment F-3 P age

6 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Residents - Denison St near CPWE (Adults and children) Exposure Time (ET, hr/day) 24 Assume adults and children spend all day at home where concentrations are the same indoors and outdoors Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assessment based on annual average concentrations Exposure Frequency (EF, days/yr) 365 Assume residents at home all days of the year (NEPC 2013) Exposure Duration (ED, years) 35 Duration of time at any one residence (enhealth 2012b) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-9 6% -- Vinyl chloride 8.8E E E E E-8 40% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-8 54% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) 2.0E-04 10% 1.8E E E E % TOTAL 4.4E Consolidated Human Health Assessment F-4 P age

7 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Residents - Western Margin (Adults and children) Exposure Time (ET, hr/day) 24 Assume adults and children spend all day at home where concentrations are the same indoors and outdoors Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assessment based on annual average concentrations Exposure Frequency (EF, days/yr) 365 Assume residents at home all days of the year (NEPC 2013) Exposure Duration (ED, years) 35 Duration of time at any one residence (enhealth 2012b) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-9 33% -- Vinyl chloride 8.8E E E E E-9 35% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-9 32% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) 2.0E-04 10% 1.8E E E E % TOTAL 1.3E Consolidated Human Health Assessment F-5 P age

8 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Recreational Users of Athletics Field (Adults and children) Exposure Time (ET, hr/day) 4 Assume use of field for 4 hours each day Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assesment based on annual average concentrations Exposure Frequency (EF, days/yr) 208 Assume use of field 4 days per week Exposure Duration (ED, years) 35 Assumed duration of time using field (enhealth 2012) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-10 6% -- Vinyl chloride 8.8E E E E E-9 40% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-9 54% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) 2.0E-04 10% 1.8E E E E % TOTAL 4.2E Consolidated Human Health Assessment F-6 P age

9 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Recreational Users of Athletics Field - Grandstand (Adults and children) Exposure Time (ET, hr/day) 8 Assume patrons spend up to 8 hours in grandstand Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assesment based on annual average concentrations Exposure Frequency (EF, days/yr) 208 Assume use of field 4 days per week Exposure Duration (ED, years) 35 Assumed duration of time using field (enhealth 2012) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-10 6% -- Vinyl chloride 8.8E E E E E-9 40% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-9 54% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) 2.0E-04 10% 1.8E E E E % TOTAL 8.4E Consolidated Human Health Assessment F-7 P age

10 Conc V C a ET FI EF ED (mg/m 3 ) Parameters Relevant to Quantification of Exposure by Workers in Areas off the BIP Exposure Time (ET, hr/day) 8 Working day as per enhealth (2012b) Fraction Inhaled from Contaminated Source (FI, unitless) 1 Assesment based on annual average concentrations Exposure Frequency (EF, days/yr) 240 Working 5 days per week for 48 weeks of the year Exposure Duration (ED, years) 30 Working lifetime as per enhealth (2012b) Averaging Time - Non (Atc, hours) USEPA 2009 Averaging Time - (Atn, hours) USEPA 2009 Concentration Daily Exposure Calculated in Air, Maximum from receptors 9 and 10 (Ca) Non Hexachlorobenzene (HCB) 5.6E E E E E % Hexachlorobutadiene (HCBD) 7.0E E E E E % Hexachloroetrhane (HCE) 3.0E E E E E % 1,1-Dichloroethene 2.0E E E E E % 1,2-Dichloroethane (EDC) 2.8E E E E E-9 4% -- Vinyl chloride 4.4E E E E E-9 11% -- Dichloromethane 3.5E-01 20% 2.8E E E E % Trichloroethene (TCE) 4.0E E-03 10% 1.8E E E E E-8 84% % Tetrachloroethene (PCE) 2.0E-01 10% 1.8E E E E % Mercury (as elemental) - FCAP remediation 2.0E-04 10% 1.8E E E E TOTAL (excluding mercury from FCAP remediation) 8.0E Consolidated Human Health Assessment F-8 P age