Regulation No. 55 of the Minister of Environment establishing the Requirements for Discharging Dangerous Substances into Public Sewage System

Establishment of the Requirements for Discharging Dangerous Substances into Public Sewage System Regulation No. 55 of 4 June of 1999 of the Minister of Environment Pursuant to section 10(2) of the Public Water Supply and Public Sewerage Act (RT (State Gazette) I 1999, 25, 363) and taking account of Council Directive 76/464/EEC on the Requirements for Discharging Dangerous Substances into the Aquatic Environment (OJ No. L 129. 18. 05. 1976) and of the Convention on Protection of the Marine Environment of the Baltic Sea Region (RT II 1995, 11/12, 57), I hereby establish: 1. to approve “Requirements for Discharging Dangerous Substances into Public Sewage System” Dangerous substance Limit values for concentrations of dangerous substances in waste water Remarks 1.1. Heavy metals The limit value for a heavy metal is the concentration of the heavy metal and the compounds thereof (calculated on heavy metal) in waste water mercury 0.05 mg/l argentum 0.2 mg/l cadmium 0.2 mg/l total chromium 0.7 mg/l chromium compounds (Cr6+) 0.04 mg/l copper 1.0 mg/l lead 0.5 mg/l nickel 1.0 mg/l zinc 2.0 mg/l tin 0.5 mg/l arsenic 0.2 mg/l 1.2 Organic substances CAS No.a DDT (1,1,1-trichloro-2,2 bischlorophenylethane) and its derivates DDE and DDD 50-29-3 Concentrations not allowed in waste water PCB–s (polychlorinated biphenils) PCT–s (polychlorinated tetraphenils) aldrin 309-00-2 2 m g/l dieldrin 60-57-1 2 m g/l endrin 72-20-8 2 m g/l isodrin 46-57-36 2 m g/l benzene trichloride 120-82-1 0.05 mg/l hexachlorocyclohexane 608-73-1 1.0 mg/l benzene hexahloride 118-74-1 1.0 mg/l hexachlorobutadiene 87-68-3 1.0 mg/l tetrachlorometane (carbon tetrachloride) 56-23-5 1.5 mg/l pentachlorophenol (2,3,4,5,6 pentachloro-1-hydroxybenzene and its salts ) 87-86-5 1.0 mg/l chloroform 67-66-3 0.5 mg/l 1,2-dichloroethane 107-06-2 1.0 mg/l trichloroethene 79-01-6 0.5 mg/l perchloroethene 127-18-4 0.5 mg/l other organohalogen compounds 1.0 mg/l Notes: a CAS number indicates the number of a chemical substance on the list of the information service of the periodical “Chemical Abstracts”. 2. The requirements established by clause 1 of this Regulation must be complied with by 31 December 2000, at the latest. Heiki Kranich, Minister of Environment Sulev Vare, Secretary General