Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:5:p3
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 5 (pt 3/4)
Character Range: 1553159–1558108

(expressed in terms of added Zn) for soil invertebrate species.
Invertebrate species  Geometric means (mg/kg added Zn)
Common name           Scientific name                   EC10 or NOEC  EC30 or LOEC  EC50
Earthworm             A. caliginosa                     669           823           1172
Earthworm             A. rosea                          1172          1221          1308
Earthworm             E. fetida                         602           888           1726
Earthworm             L. rubellus                       659           855           1328
Earthworm             L. terrestris                     3187          3771          5026
Nematode              Acrobeloides sp.                  663           995           1989
Nematode              C. elegans                        366           550           1099
Nematode              C. elegans (dauer larval stage)   2068          3103          6205
Nematode              Community nematodes               919           1378          2756
Nematode              Eucephalobus sp.                  404           605           1210
Nematode              Plectus sp.                       70            105           210
Nematode              Rhabditidae sp.                   597           896           1791
Potworm               E. albidus                        363           544           1088
Potworm               E. crypticus                      828           1241          2483
Springtail            F. candida                        566           848           1696

Table 23. The geometric mean values of the aged and age-corrected zinc (Zn) toxicity data (expressed in terms of added Zn) for plant species.
Species                Scientific name    Geometric means (mg/kg added Zn)
                                          EC10 or NOEC                      EC30 or LOEC  EC50
Alfalfa                M. sativa          595                               892           1784
Barley                 H. vulgare         110                               306           652
Beet                   B.vulgaris         595                               892           1784
Black or white lentil  V. mungo           284                               426           852
Canola                 B. napus           230                               328           409
Common vetch           V. sativa          127                               190           380
Cotton                 Gossypium sp.      272                               288           293
Fenugreek              T. foenum graecum  318                               477           953
Lettuce                L. sativa          793                               1189          2379
Maize                  Z. mays            460                               694           1324
Millet                 P. milaceum        540                               1580          2026
Oats                   A. sativa          667                               1000          2000
Onion                  A. cepa            198                               297           594
Pea                    P. sativum         793                               1189          2379
Peanuts                A. hypogaea        140                               224           280
Red clover             T. pratense        117                               176           351
Sorghum                Sorghum sp.        256                               528           924
Spinach                S. oleracea        396                               595           1189
Sugar cane             Sacharum           3220                              4830          9661
Tomato                 L. esculentum      793                               1189          2379
Triticale              Tritosecale sp.    998                               1364          1658
Wheat                  T. aestivum        640                               928           1172

For each urban residential/public open space land use, soil-specific ACL(NOEC & EC10) values were derived separately for soil processes, soil invertebrate species and plant species (data not shown). Within each land use type, the soil-specific ACL(NOEC & EC10) values for each organism group were then merged so that the lowest ACL(NOEC & EC10) value for each combination of soil pH and CEC was adopted (Table 24). These should theoretically protect 99%, 80% and 60% of all soil processes, soil invertebrate species and plant species that are exposed to aged Zn contamination in soils that  are in an area of ecological significance, or have an urban residential/public open space, commercial/industrial land use, respectively.
Table 24. Soil-specific added contaminant limits based on no observed effect concentration and 10% effect concentration toxicity data (ACL(NOEC & EC10), mg/kg) for aged zinc (Zn) contamination that should theoretically provide the appropriate level of protection (i.e. 99, 80 or 60%