Schedule B1: Guideline on investigation levels for soil & groundwater

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Table 1A(1) Health investigation levels for soil contaminants Chemical Residential A Health-based investigation levels (mg/kg) Residential B Recreational 1 C Commercial/ industrial D Metals and Inorganics arsenic 2 100 500 300 3000 beryllium 70 100 100 500 boron 5000 40000 20000 300000 Cadmium 20 140 100 800 chromium (VI) 100 500 240 3000 Cobalt 100 600 300 4000 Copper 7000 30000 20000 250000 lead 3 300 1200 600 1500 manganese 3000 8000 9000 40000 methyl mercury 4 7 30 10 200 mercury (inorganic) 200 600 400 4000 Nickel 400 900 800 4000 Selenium 200 1500 700 10000 Zinc 8000 60000 30000 400000 cyanide (free) 250 400 350 2000 Polycyclic Aromatic Hydrocarbons (PAHs) benzo(a)pyreneTEQ 3 4 4 40 PAHs 300 400 400 4000 Phenols Phenol 3000 50000 45000 250000 pentachlorophenol 100 150 140 700 Cresols 400 5500 4700 27000 Organochlorine Pesticides DDT+DDE+DDD 260 700 400 4000 aldrin and dieldrin 7 10 9 50 chlordane 50 100 80 560 endosulfan 300 460 400 2000 Endrin 10 20 20 100 heptachlor 7 10 9 50 HCB 10 20 15 85 methoxychlor 400 550 500 2700 Mirex 10 20 20 100 toxaphene 20 35 30 170 Phenoxyacetic Acid Herbicides 2,4,5-T 700 1000 900 5000 2,4-D 1000 2000 1400 9500 MCPA 700 1000 900 5000 MCPB 700 1000 900 5000 mecoprop 700 1000 900 5000 Picloram 5000 8000 6500 37000 Other Pesticides Atrazine 360 550 500 3000 chlorpyrifos 170 400 300 2000 Bifenthrin 600 900 750 4000 Other Organics PCBs 1 2 2 8 PBDE Flame Retardants (Br1- Br9) 1 2 2 10 Notes: (1) HIL A Standard residential with garden/accessible soil (home grown produce
(3) HIL for lead based on blood lead models (IEUBK for HILs A, B and C and adult lead model for HIL D where 50% oral bioavailability has been considered. Site-specific bioavailability may be important and should be considered where appropriate. (4) Assessment of methyl mercury should only occur where there is evidence of its potential source. It may be associated with inorganic mercury and anaerobic microorganism activity in aquatic environments. In addition the reliability and quality of sampling/analysis should be considered. (5) HIL for B(a)P TEQ is based on the 8 carcinogenic PAHs and TEFs (potency relative to B(a)P) adopted by CCME 2008 (refer ScB7). The B(a)P TEQ is calculated by multiplying the concentration of each carcinogenic PAH in the sample by its B(a)P TEF, given below, and summing these products. Benzo(a)anthracene = 0.1 Benzo(a)pyrene = 1 Benzo(b+j)fluoranthene = 0.1 Benzo(k)fluoranthene = 0.1 Benzo(g,h,i)perylene = 0.01 Chrysene = 0.01 Dibenz(a,h)anthracene = 1 Indeno(1,2,3-c,d)pyrene = 0.1 Where the B(a)P occurs in bitumen fragments it is relatively immobile and does not represent a significant health risk. (6) HIL for total PAH is based on the sum of the 16 PAHs most commonly reported for contaminated sites (WHO 1998). The application of the total PAH HIL must consider the presence of carcinogenic PAHs and naphthalene (the most volatile PAH). Carcinogenic PAHs reported in the total PAHs must meet the B(a)P. TEQ HIL. Naphthalene reported in the total PAHs must be addressed on the basis of the relevant HSL. Table 1A(2) compounds Interim health investigation levels for volatile organic chlorinated Residential A Residential B Recreational C Commercial / Industrial D Chemical Interim soil gas HIL ** (mg/m 3 ) Interim soil gas HIL** (mg/m 3 ) Interim soil gas HIL** (mg/m 3 ) Interim soil gas HIL** (mg/m 3 ) TCE 2 2 - 15 1,1,1-TCA 260 260 - 1800 PCE 10 10 - 70 cis-1,2- dichloroethene 2 2 - 10 vinyl chloride 0.3 0.3 - 2 Note: Land use settings areequivalent to those described in Table 1A(1) Footnote 1. ** Interim soil gas HILs are conservative soil gas concentrations that can be adopted for the purpose of screening sites where further investigation is required on a site-specific basis. They are based on the potential for vapour intrusion indoors using a conservative indoor air to soil gas attenuation factor of 0.01. <strong>Schedule</strong> B (1) - <strong>Guideline</strong> on Investigation Levels for Soil and Groundwater 37
Page 1 and 2: National Environment Protection (As
Page 3 and 4: Contents Investigation levels for s
Page 5 and 6: 1 Introduction The purpose of site
Page 7 and 8: Petroleum hydrocarbon ‘management
Page 9 and 10: The HSLs have been developed to be
Page 11 and 12: 2.2.3.3 Biodegradation The modellin
Page 13 and 14: In contrast, soil contamination by
Page 15 and 16: Judgemental sampling is preferred a
Page 17 and 18: EC30 data are the concentrations of
Page 19 and 20: In many cases, sites assessed for T
Page 21 and 22: 3 Application of investigation and
Page 23 and 24: Site-specific health and ecological
Page 25 and 26: Step 2: Tier 1 risk assessment Ques
Page 27 and 28: 3.4 Case study 2: Use of soil gas H
Page 29 and 30: Similarly a site with lead (Pb) and
Page 31 and 32: Results Contaminant Depth CEC pH Cl
Page 33 and 34: 3.6 Groundwater assessment The <str
Page 35 and 36: • large monolithic deposits of ot
Page 37: In situations where these materials
Page 41 and 42: Table 1A(3) HSLs soil (continued) C
Page 43 and 44: Table 1A(4) HSLs groundwater (conti
Page 45 and 46: Table 1A(5) HSLs soil gas (continue
Page 47 and 48: Table 1B(1) ACL for aged Zn Soil-sp
Page 49 and 50: Table 1B(3) ACL for aged CrIII and
Page 51 and 52: Table 1B(5) ESLs for TPH fractions
Page 53 and 54: Non-metallic inorganics Organic alc
Page 55 and 56: Pesticides Acephate 10 Aldicarb 1 A
Page 57 and 58: Surfactants Promecarb 30 Propachlor
Page 59 and 60: NHMRC & NRMMC 2004, National water
Page 61: 7 Glossary Ecological investigation

Schedule B1: Guideline on investigation levels for soil & groundwater

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