KAIKORAI DRAINAGE

Evening Star, Issue 14490, 15 February 1911, Page 8

KAIKORAI DRAINAGE

The following report from Mr Slinger, the Hoard's engineer, was read at last night's meeting of the Drainage Board :

"On January 17, 1911, a deputation from tho Rodlyn Borough Council waited on the Board to reopen tho question of sewering th.it part of their borough within tho Kaikorai watershed, and as per your instructions I have tho honor to report that I most strongly adhere to my report which vv.ii placed before tho Board in July, 1907, dealing with the drainage of the" Kaikorai Valley north of tho Oversham railway tunnel. I am well acquainted with tho natural features and existing conditions of the whole of dio Kaikorai watershed, and that the serious nuisances, which are being set up for want of a drainage system, could be done awav with if a definite course is followed. "The Mornington and Roslyn areas within the Kaikorai watershed are not excluded from the Board's district, but are excluded from the Board's rating area only. Thus, tho question arises as to whether the Board are going to be a party to any scheme which may be put forth to deal with this area.

"My views are that a comprehensive scheme should oe formulated to deal with the whole of the Kaikorai drainage area, and plans and sections prepared, along with detailed estimates, this to be definitely considered as an ultimate sthenic, and "agreed to by all the local bo-lies concerned. Portions of this scheme emiid bo constructed and temporary measures taken to deal with the sewerage which would effectively deal with the insanitary conditions within that area.

"The Kaikorai Stream is chiefly polluted by dischaiges from the abattoirs and I'lom places north thereof, and if liie.se disclnras eor.M he dealt with ; t would be within easy range to deal in a temporary way with the sewerage of the Abl>otsford tvid firoen Island portion. I wish to n:ake it tj"ite clear that 1 could rot leeommond the Board to take the Kaikorai Valley drainage north of the tunnel into their scheme as a permanency ; but 1 aI--o wish to indicate that the 80-aid could take in the diy-wenther flow only from that area. ; ; s a temporary measure, until such lime as the general scheme dealing w'th the Kaikorai a:ea had reached such a st.ige as to permit of this upper airt !>'. ing connected thereto. At the intake to the tunnel sewer a leaping weir could be constructed, so that during wet writ her the sewers from the upper area would discharge direct into the Kaikorai Stream No nuiwince would be caused durnv; the fiesh, which would occur but a few tiu.es a vear.

•'The question again arises as to whether the Board would rate this area or -nake an annual charge for this temporary discharge of towage into their scheme. Temporary ariaiiLjcmcnts could be made to -ake into this intake the abattoirs, Christchureh Meat Company's, and Kempthorne, Profiler's discharges. The stream below theso places would then only be polluted by household drainage, which could, if found necessary, be dealt with by constructing that portion of the permanent scheme to serve such premises, and temporary filtr.t.vion works provided about the edge of tho lagoon. "The chairman of works, Mr Small, and I this day went over the Kaikorai Valley from the abattoirs to the ocean, and I have pointed iv.it approximately the lines of sewers and ocean outlet which could bo put into operation to deal with tho Kaikorai watershed.'' Mr Small moved that the matter be held over for a fortnight, and that a copy of the report be sent to each member. He thought, from the fact that tho Roslyn people were unable to get Parliament to iiifiec to the separate tank system, that it would be useless to deal in an isolated I'uirmcr with that portion of the district. The Hoard must first have power to deal with ilie whole area, and then a proper

and comprehensive scheme would have to be planned. .Mr Arkle said he understood that this was a new scheme altogether. They should lir-it u'> t an idea of what it would co>t. and who and what they were going to rate, and what the Poard were going to get .out- of the outlay.

Mr Sn; :11: This is not to be a Dunedin drainage scheme, but a Kaikorai scheme, and tiiev will have to lincl the monev.

Sov.'i.'l questions having been asked, The Chairman wid the position was that the 1 !•>;'.rfl had Leon asked to remedy r' : tiiiu and this was the outr.,\rv. R<->lyn to he taken b:iek into the fold. Th. v engineer had gone over the grui'iid with the chainr.an of the Works r<:inn'.iit.'v, and luul devised a scheme to give relief

.Mr Siimyr said it was a very simple matter. ir<l if the representatives of the l.jc.'l ho'ii n s were shown over the whole work. :: T i-| his projiosal were put before them, !:•"• thought they would fall into line ;::\d give relief to the Kaikorai drainage a.ica It need not he an expensive job. After discussion it whs resolved to hold a special meeting on Tuesday, the 21st.