~ Published Bright and Early Every Thursday Morn i at. “The Crossroads of the Kootenays" : CASTLEGARY ‘BRITISH ' (ob s Friday, Saturday andSundoy =.” THURSDAY: JULY: 19, 1979 Vo}. 42, No, 29 5 (A,B,C,D&E) ieee eines” ate ate 1200 Ye typi rae e0s ave "odectote, ‘iver moin polluter th ne section above Birchbank. Denoted Hi pollution control permit serial numbers'on the mop a ithe site of the company's effluent discharge (PE-1272) as well as Castlegor's. north sewage facilities (PE-80) ond CASTLEGAR fee atre =e | tite pewter sewage facilities: {PEO08) By RYON GUEDES CASNEWS EDITOR “Sublethal" and toxic effects of effluent: from CarCel’s focal ul} Ip and: sawmill operations on in the Columbia River - water" quality three separate sewers, through a submerged diffuser.“ Flow from the general sewer, mide’ up of clarified hydraulic debarker woodroom clari- fier as\ well as disch ined in.a'r ish highlighted problemi pend a pulp and its released. B.C. ministry study. The ‘study, which with data collected-in 1976 and 1977. is the.” ‘second stage of a water quality | surve River .of the Lower Columbia asin, discusses the stress, combined with the threat of gas bubble disease posed by air. supersaturation ‘by “the. Hugh Keenleyside Dam, placed on aquatic life in the. river in the Castiegar area by exposure to the tar| discharge. environment - recovery phases, amounts to about. 60,500 cubic metres per day. The .acid sewer, consisting mostly of wash water from th cuore and chlorine from he P black ‘liquor: ‘evaporators and digesters contain volatile reduced-sulphur compounds, .and are major sources of toxicity in kraft mill effluent.” But the report: notes objectives for the forest products industry, the study says. The company has also "requested 8 deadline extension to Dee. 91, 1982, it points out, to meet the “B” level suspended solids requirements of the permit for woodroom ‘ effluents, ca ec gas levels upstream from the of biological treatment .of the kraft pulp mill effluent, probably required after the Dec. $1, 1975 expiry of CanCel’s previous pollution contro] permit, hasbeen deferred until of the second pene of the study. about 25,000 while the stkaline ae sewer flow, mostly wash water from the caustic’ extraction stages, is 20,400. According to the report, effluent flow amounting to about 1.4 cuble metres per second and the minimum dilution ratio of river/water to the discharge is about 100 to one once mixing is complete. : The study names altered growth rates, respiratory changes, reduced food conversion f . efficiency. and 1 stress enhanced ‘by. dissolved The 238-page ‘study, whieh water quality in the Arrow Lakes basin and the effects of discharge from the Cominco re} smelter and fertilizer plant’ and from the municipalities Rossland and Trail on in the Columbia as. well, also notes the CanCel effluent’s effect on water taste and color and the insufficient chlorination in sewage from the City of Castlegar, ‘The report says CanCel's combined id Ele and ‘sawmill operations: discharge ily average of 120,000 cubic metres iy ‘effluents, gases lethal effects of .. effluent from ‘the CanCel operation. Phenols, resin acids, tannin and lignin-like compounds, sulphides, mercaptans and chlorine residual ‘ are listed as substances discharged by the CanCel’s to the Dam “were mostly in the satlafactory range” with a maximum of.110: per cent supersaturation, the study, says. 3 But dissolved gas levels were’ highest, it says, between the Hugh Keenleyside, Dam’: ' and. the Kootenay River with up to'144 Ber. cent The levels’ dé expired permit call ry deletion of standards for chlorine residual, mercaptans, settleable solids and sulphide because they have been deleted from revised pollution control company which'were at levels “that could :' [i make the effluent toxic to aquatic life.” . “Biological. treatment of-the total mill effluent is.‘one method of reducing .:the toxicity of Bleached kraft mill effluent Ay says i the ‘study. “Contaminated condensates from- the ae Trouble’ Honoring Pickets | - Here if Legal ae Called gar } ‘sought reductions in its regi- ‘onal planning levy’ onthe try. grounds. that:'the city: also its~own ‘ department,