(d) To the extent that there are 2 sediment standards for the same compound (in some instances
both human health and sediment-dwelling organism based standards) the lower standard shall
control.
(e) Response actions must also comply with the following narrative standards for sediments.
(f) In the case of a substance for which there is no numerical standard listed in the Table,
concentrations of hazardous substances in sediments must meet criteria described for
acceptable ecological risk
(g) These numerical sediment cleanup levels and narrative sediment cleanup levels shall remain in
effect until the Department of Natural Resources(“Department”) amends them.
(h) The Department may also establish more stringent cleanup levels for a specific site, when,
based on a site-specific evaluation, the Department determines that such levels are necessary to
protect human health and the environment.
Legislative History-Adopted 12/22/03, Resolu. 2004-085; Readopted 8/01/06, Resolu. 2006-524.
Table C1. Sediment Cleanup Levels Estimated to be Protective of Bottom Dwelling Organisms (after
Confederated Tribes of the Colville Reservation)
Hazardous Substance
CAS No.
Sediment Cleanup Levels
(μg/kg DW)
7440-38-2
7440-43-9
7440-47-3
7440-50-8
7439-92-1
7439-97-6
7440-02-0
7440-66-6
9.79
0.99
43.4
31.6
35.8
0.18
22.7
121
120-12-7
59756-60-4
91-20-3
85-01-8
56-55-3
50-32-8
218-01-9
206-44-0
129-00-0
NA
57.2
77.4
176
204
108
150
166
423
195
1610
1336-36-3
59.8
12789-03-6
60-57-1
NA
NA
NA
NA
72-20-8
1024-57-3
58-89-9
3.24
1.9
4.88
3.16
4.16
5.28
2.22
2.47
2.37
Metals
Arsenic
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Zinc
Polycyclic Aromatic Hydrocarbons
Anthracene
Fluorene
Naphthalene
Phenanthrene
Benz[a]anthracene
Benzo(a)pyrene
Chrysene
Fluoranthene
Pyrene
Total PAHs
Polychlorinated Biphenyls
Total PCBs
Organochlorine Pesticides
Chlordane
Dieldrin
Sum DDD
Sum DDE
Sum DDT
Total DDTs
Endrin
Heptachlor Epoxide
Lindane (gamma-BHC)
Legislative History-Adopted 12/22/03, Resolu. 2004-085; Readopted 8/01/06, Resolu. 2006-524.
306
Revised Spokane Law & Order Code, 5/14/2013