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Gisborne Times, Volume XXVII, Issue 2542, 1 July 1909, Page 2

anks/',t least;; al sum ues,”: V/bev :■■■. :?•# rnitted d final ;me of illy clothe work kind of , ■; on strict the sign bo over ill trouble and dis-> nsue if these coii-,\ tod. hons.—l will now ' lie questions under r first quoted, caters : ’ .■A system' of pumping [r. Marchant the boat .Board’s requirements' ..v circumstances, yes. r ill the system of syiphonage as gested betweon Whataupoko . and ti work satisfactorily P—Yes, under conditions: recommended. Will the excess of water from hath i, wash-houses, etc., interfere with uccessfal . working :of the septic P—No, septic' tanks take the orsewage discharge of towns, include the -foregoing. _ /•,.// the cost allowed for mainten- i TicientPr-I dliilik this amount y somewhat /increased to allow, ipjoyment of one man to look system .generally, to underlushing and minor repairs, ho’ suggested drainage of ough the pipes affect the •tru-ction ?—-There- ..is noth--rl in Mr. Merchant's rein- drainage of trenches, oned to mo that lie prong through shingle into low, .after. the . joints, had; s no objection to this, but ) that temporary pumping be resorted to if the water eg.omc ie dqal with by the ust named. ... lore . am/. danger froiii a sain-.: of view from putting the u the septic tanks into the whatever. \ -c-heme so designed as to be xtpnsion as the population r^O' as propounded boV- serve the avnole of , the 1 I am informed further'ex>t likely to be required for m, y time. •' It .is not 'capable, of - any considerable the- suggested gradients suffi-* es. *,-/•• ■'..-• ; ■ absence of filter beds any to the .scheme?—No,- these .pessary • under existing conyou: Consider ,'that the work rrigd out for the estimated at is^Yhy'/opinion. '//m/ y of course*, be recognised that art arid the • foregoing replies sed on. tho information furnished ae by Mr.. ■Marcliant,- and on tho ’m.ptioh that* suph. information, leviafe correct ; -just as Mr. Marist assume that the. levels fur-, him are- correct. 5 nodoubt /.whatever that such se. ,", •- - > ; ’ . ted to . state that when - the ave, been plotted and finally >, hi ay be necessary to some-, -.e the length of the 9-igcli ■ <•'/ to such .. an extent as ' -f the estimated cost 7 .point in which elf. cleafj I shall cO any further m my power to TUTHBERT, Mem. San. Inst. 26, 1908. . was read at the "h Council last r, pending the om the other ../a of Experts v. oouncil. onneetion -a . letter was 'alintine, Chief Health, that an officer of his Id visit Gisborne at an .port on the drainage NDUM BY MR. RCIIANT. / ;/./ reliant, M. Inst. C.E., jllcwing addendum to sewerage scheme preiorne Bordough Coun--1909:. nste.ad' of the septic osed to use/ in cono. 5/1 now propose ge into the sewer root..' e departed in a few minimum gradient decrease of velocity phis'flatter gradient per,Second less than toTa/gradient of 1 in .'desirable to keep the Y.,gradients, as possible; deep-.cuttings in wet -t lately examined a •adient of 1 in 455. •lege:velocity than •if 570 gradient, boh./in use for 3J •ewage of several ss, perfectly clear /proposed to inwer .of the Peliqwer . Nothing Nyill at present theoretical : Yh: the.gr eatjjUOjOOO pere'mtefowcr;. about 5 pi. the ■ machinery ’e more‘than that ; ■ed,' and can always be nver output to begin ised as required without } additional -machinery. -ated -cost of power s under:;.One 21in Felton , wheel and .Vestinghouso genPelton, £l2O - "one , engine and genas, £7oo'; one West--18 •horse-power, out-: .11 accumulator, work- ;

.//// : •" / /..../,, . : ' ,r ; v : .. ■_/ ; I ing at 440 volts, with fittings, £1100; switch board meters/ tools/ and erection of plant, £760: building/. £500:: Total, £3610. _ : :/, / _ : / . . Small pumping. station, having - two 3iu , centrifugal. piintps, one working, \ono stand-by. Maximum lift loft, including friction; collecting tank, pipes, etcyi/pump-hquse aud; sundries. Total, .0015^5 1 Main pumping station, having two sin cenirifugal pumps, maximum lilt 15ft, including friction jcollocting tank, etc., pump house, and sundries. Total, £9OO. : Electric line transmission, 2} miles, at £250. Total, £025. Total estimate of power, plant, etc. — Central power station, ns per details on page 2 hereof, £36-10; throe small pumping stations at £ GOO,/ £ 1800; two mam pumping ’station, at ;£9O0 7 ~£lßoo.electric line,; £625. Total/.. £7865: (or, say £8000). / : :/ / '/;,: ''' y ' £ Stoneware sewers main Gis- • borne, Gin, 9in boro and up- / ; wards; 1450 chains at £l3 average .... ... ... 18,850 Stoneware sewers North Gisborne and Kaiti, Gin bore, and upwards, 1050 chains,.. at. £9 ■ average ' ... ... ... ••• 9450 Cast iron pipes priced at £l2 / . per toil laid : 12in, 63 chains; i 9in,. 113 chains ;6iu, 4 chains; i; ; oin, 18 chains; 4-in, 11 chains. ' Total, 209 chains - ... 3877 Add cost of laying east iron' sy-./ ; phon under Waiihata/ river,; - .. with manholes at each end... 600 Man holes, No. 200 at £l4 ... 2800 Inspection pits, No/ 100 at £5 SUU .Vent pipes, No. 200 at £lO ... . 2uoo Two septic tanks at £I3OO each 2000 Two small tanks for areas 7 and 8 ... ... ... ... 250 Two sea outfalls, one on' iron- : bark piling, and.one laid and ■concreted' in papa rock trench ; 600 power and pumping plant, as : previously detailed ... .... 8e Engineering, Supervision, and , sundries- , ... ... ... 4000 Contingencies ... ... .... 4473

Total estimated cost less than £58,000

Cost of Working.—Felton wheel driving ele-ctric generator day and night, requiring no supervision beyond oiling and cleaning; gas plant used as standby only, worked lor 8 'hours once a week, to keep in running order; one skilled electrician, only required in charge of plant, salary £250 per annum/allowance for use of gas plant occasionally, £l5O per annum, including oil and stores. Total. estimated cost of running the.- power station as proposed, £4OO -per annum. Repairs and depreciation of plant would probably be covered by £l5O per annum.

I consider tho estimate given for all the plant and works are very full. The electrical estimates were cheeked for me by an electrical export, whose estimate was very much below -hat i gave—viz., £BOOO. F. W. MARCHANT, M. Inst. C.E. Timaru, 17th June, 1909.