Protocol for the Derivation of Environmental and Human ... - CCME

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Part C, Section 5 based soil quality guideline, then the latter guideline is considered acceptable by the CCME and will be the recommended SQC HH . If, however, the contaminant soil concentration determined through the groundwater check is less than the preliminary human health-based guideline, then the former guideline is recommended to protect groundwater sources of human drinking water. 106
Part C, Section 5 5.3.3 Evaluation for Contamination of Produce, Milk, and Meat Humans can be indirectly exposed to contaminants in soil through food-chain contamination of produce, meat, and milk. For agricultural land use, it is likely that some meat, produce, and milk will be produced and consumed on-site. Fruits and vegetables grown in residential gardens may also be a source of human exposure to contaminants. To ensure that soil remediation guidelines do not result in an unacceptable contribution to total daily intake of contaminants via homegrown produce, meat, and milk, it is necessary to compare the expected intake of contaminants from these sources with the total daily intake. The procedure and assumptions for estimating the daily intake of contaminants in food grown on a contaminated site are described in Appendix B. The procedure relies on the use of bioconcentration factors. The identification of foods of concern with regard to bioconcentration will depend on the contaminant's physio-chemical properties. For the remediated agricultural site, estimates of contaminant concentrations in food are compared to the Maximum Residue Limits (MRLs) found in the Food and Drug Act (1985). Where MRLs are exceeded, the soil quality guideline will be lowered to ensure that unacceptable contamination of meat, milk, or produce will not occur at the remediated agricultural site. Where MRLs are not available and food chain effects are considered likely to occur on agricultural sites, the SEQCCS recommends further assessment of the potential extra exposure via foods grown or produced on soil at the soil quality guidelines. For this purpose, the SEQCCS assumed that for agricultural lands, 50% of meat and produce, and 100% of milk consumed by residents was produced on site (Appendix B). This approach reflects the variations in growing seasons and dependence on other food sources. For residential lands, it is assumed that 10% of produce (no meat or dairy products) is grown in a backyard garden. Where calculations indicate that this exposure from foods grown on a site remediated to the preliminary agricultural guideline is greater than the background food exposure plus 20% of the difference between the TDI and the EDI, the generic soil quality guideline will be lowered. Generic guidelines for an agricultural setting will therefore be protective of exposure from local produce consumption. Acknowledging potential variations in lifestyle, geographical considerations, and frequency of garden produce consumption, the SEQCCS has some reservations about considering local food consumption in generating generic guidelines for a residential setting. The SEQCCS therefore recommends that generic guidelines for residential sites not take into account exposure from local produce consumption. However, residential guidelines values calculated on a 10% consumption of homegrown produce will be available in each contaminant assessment document. For residential sites with homegrown produce, the SEQCCS recommends that the modification of generic residential guidelines to include this exposure pathway be considered in determining a site-specific remediation objective. 5.3.4 Evaluation for Contamination of Indoor Air by Volatilization 107
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A Protocol for the Derivation of En
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Readers' Comments The Canadian Coun
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Overview In response to growing pub
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mechanisms for migration of soil co
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procédures d'élaboration des reco
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• être absorbés par les plantes
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PART B Section 1 Derivation of Envi
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Section 2 Investigation of Contamin
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PART D Section 1 Derivation of the
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List of Figures 1 National Framewor
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Acknowledgements The CCME Subcommit
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Document Organization This document
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Bioaccumulation: The process by whi
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Denitrification: The gaseous loss o
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GGG Guidelines: Generic numerical l
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Mutagenicity: The ability of a chem
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xxxiv human exposure. Risk estimati
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Soil: Normally defined as the uncon
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VVV Volatilization: The chemical pr
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Section 1 The National Contaminated
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Part A, Section 1 6
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Part A, Section 1 1.2.2.2 Remediati
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Part A, Section 1 of, and establish
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Part A, Section 2 Section 2 Nationa
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Part A, Section 2 2.2 Limitations o
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Part A, Section 2 17
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Part A, Section 2 Industrial: where
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• the sensitivity of the test con
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Part A, Section 3 23
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Section 2 Level of Ecological Prote
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Part B, Section 2 2.3 Endpoint Defi
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Part B, Section 2 There is consiste
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Part B, Section 4 Section 4 Potenti
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Part B, Section 4 Figure 4 Simplifi
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Figure 5 Key Receptors and Exposure
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Part B, Section 5 grazing herbivore
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Part B, Section 5 5.2.2 Maintenance
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Part B, Section 5 5.4 Industrial La
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Section 6 Uncertainty in Guidelines
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Section 7 Guidelines Derivation Pro
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Part B, Section 7 (SQG SG = soil qu
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Part B, Section 7 a soil quality gu
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Where: NPER = no to Potential Effec
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Part B, Section 7 7.5.2.1 Using Mic
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Part B, Section 7 data, the Median
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Part B, Section 7 EC 50 LC 50 UF =
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Where: ERL = Effects Range Low, ECL
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Part B, Section 7 Where: EC 50 = Me
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Part B, Section 7 Where the ECL lie
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Part B, Section 7 4. Fewer than thr
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Page 117 and 118: Section 8 Derivation of the Final E
Page 119 and 120: Part C, Section 1 65
Page 121 and 122: Part C, Section 1 various sites acr
Page 123 and 124: Part C, Section 1 Geographical unce
Page 125 and 126: preferred for the assessment, but s
Page 129 and 130: Part C, Section 2 Environmental con
Page 131 and 132: Part C, Section 2 extent, the steep
Page 133 and 134: Section 3 Exposure to Contaminants
Page 137 and 138: Part C, Section 4 Section 4 Exposur
Page 139 and 140: Part C, Section 4 within limits, th
Page 141 and 142: Part C, Section 4 Figure 19 Concept
Page 143 and 144: Part C, Section 4 4.2 Absorption of
Page 145 and 146: Part C, Section 4 In the case of no
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Page 150 and 151: Part C, Section 4 Commercial Land U
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Page 155 and 156: Part C, Section 5 these data are av
Page 157 and 158: Part C, Section 5 GEOCHEM (Mattigod
Page 159: Part C, Section 5 • K oc (sorptio
Page 163 and 164: Part C, Section 5 parameters, and s
Page 165 and 166: Section 6 Derivation of the Final H
Page 167 and 168: Part D, Section 1 101
Page 169 and 170: does not apply to the commercial or
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Page 174 and 175: References Aldenberg, T., and W. Sl
Page 176 and 177: References -dwelling Organisms", Ab
Page 178 and 179: References 112
Page 180 and 181: References Hill, E.F., and D.J. Hof
Page 182 and 183: References Paustenbach, D.J., (1989
Page 184 and 185: References Summers, J.K., H.T. Wils
Page 186 and 187: Appendix A Appendix A Nutrient and
Page 188 and 189: Appendix A Figure A.1 Simplified Te
Page 190 and 191: Appendix A 4.1 Agricultural and Res
Page 192 and 193: Appendix A References Bååth, E.,
Page 194 and 195: The Subcommittee considers that exp
Page 196 and 197: Appendix B P l P r BW = percent pro
Page 198 and 199: Appendix B Substituting equation 5
Page 200 and 201: Appendix B Where no MRL exists, the
Page 202 and 203: Appendix B Then, the remainder (T R
Page 204 and 205: Appendix B For carcinogens, total i
Page 206 and 207: Appendix C Rearranging [2] and subs
Page 208 and 209: Appendix C References Chiou, C.T.,
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Appendix D uncontaminated organic m
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Appendix D R = recharge, m/yr A = a
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Appendix D 2.3.3 Hydraulic Gradient
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Appendix D 2.3.5 Site Length The le
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Appendix D Table D.2 Lower Quantile
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Figure D.2 Conceptual Model of Dilu
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Appendix D Figure D.3 Recharge Esti
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Appendix D 159
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Smith, A.E., P.B. Ryan, and J.S. Ev
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Appendix E C K L V is the climate f
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Appendix E contaminant concentratio
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Appendix F Appendix F Multi-media E
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Appendix F example, fish BCFs are t
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Appendix G 2.2 Contaminant Vapour T
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Appendix G Table G.1 Equations Used
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Appendix G at the outset that, rath
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Appendix G 4.4 Application of the R
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Average outdoor summer temperature
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Appendix G References Alberta Envir
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