THE DRAINAGE OF MASTERTON.

Wairarapa Age, Volume XXXII, Issue 10060, 4 June 1910, Page 5

THE DRAINAGE OF MASTERTON.

A COMPREHENSIVE SCHEME. PREPARED BY THE ENGINEER. AP?ROVED BY COUNCILLORS IN COMMITTEE. TOTAL COST £31,000. At a meeting of the Masfer!o-i Borough Council in committer, held on Thursday evening, last, the Borough Engineer, Mr W. T. Mansfkld, Fellow Institute Sanitary Engineers and Associate Member of the Royal Sanitary institute, submitted the following report, which, it is understood, was most favourably received:— Agreeably with the instruction contained in Minute 352 of tha 26th October last 1 now bep.after careful examination of the configuration of the Borough, to submit the following report for consideration. I find the mean grpund level ac the S.W. end of Nursery Road to be some six feet below the invert of the outfall sewer at the present works, a circumstance which, it will be seen, j is fatal to a gravity scheme which i will include the whole of tha exist- ; i

sng Borough. . That being the case, several cotirses or schemes are, open for conisderation:— 1. To determine, for the present at any rate, thai; it is not necessary to provide for lands in the Borough lying below River Road. In such event, a sewer could be taken with a very flat grade to the existing cutfajl \yorks, which would, with the exception of a very small area lying between Herbert Street extension and the bottom end of Kuripuni Street, provide a gravity scheme for all the other parts of the Borough. 2. To adopt the scheme outlined by my predecessor in office. 3. To extend the present works on to land the property' of Mr McPherson Cole, which would, again with a very flat grade, provide a scheme at gravity for the whole of the Boroutrh.

4 Abandon ths present works and establish other some chains below the S. W end of Nursery Road, and discharge the effluent into the Kuripuni Stream.

5. To concentrate the sewag? of the present unsewered area at Nursery Road, and lift by pumps or other means to the present work. In that event it would be necessary to enlarge the present plant end add to the area of land for purposes of purification.

6. To establish an outfall at a point lower down the banks'of the Ruamahanga below the present ojtfali and below the lands referred to in scheme 3.

Having .regard to the heavy expense, and so recently too, to which the Borough ha? been put in establishing the present works, it is to me a matter of deep concern to advise against the retention of the present site, if it is dfesired to place the sewerage of the Borough upon a permanent footing.

SCHEME I. • I This scheme does not commend it- j self to me mainly on the ground of \ its incompleteness. The present diffl- j cnlty, i.e., the want of sewerage facilities, is one which has been partly created by developments taking place along lines remote from the existing scheme, and it might well be that immediately following upon the completion of a scheme such as this, the land* excluded from the scheme would fall into the market foi building purposes thus giving rise to further difficulties.* SCHEME 2. I gather that the proposal to take a 15 inch outfall sewer som? three miles across fields and roads in part through wet ground at an estimated cost of £5,000 was regarded as compulsory owing to there being soother site with a suitable soil available nearer the Borough, if that be so nothing more need be said, but I retard the cost of constructing an i ou fall sewer at such a distance from town through difficult ground at so great a cost, as 'a step warranted only as a last resource. Furthermore, it must be borne in mind, assuming i the estimates t v be sound, that' j schem°, 2 does not provide the cost of I &eroering River Koad, Nursery Road, or the greater part of Johnson Street, It; provider for portions only of South Road, High Street, • Short Street, Walton's Avenue, Michael Dixon Street, arid Pownall Street. It makes no provision whatever forYcrk > Street, and thete are now besides to be considered Wrieht, Tararua, Fleet and York Street extension, all newly dedicated streets since the completion of the report; so that some thousands of pounds sterling must necessarily be added tD the estimated cost of the scheme to bring it down to the present requirements. Further, the scheme does not provide for the pur- " 1 - outfall site,- neither does it provide f <r easements along the three mile length of outfall sewer, so that.to obtain an approximation of the cost of the scheme for the purpose of comparison, it is necessary to further add purchase price of land and value ol easements. Estimating the additional sewers 1 due to the new streets referred to at

say £l,lOO, lands for disposal works at £1,600, and easements at £4BO, ! and assuming the estimates to be soucd, the cost of the scheme would then approximate to £HO,OOO, to which must be further added the estimated cost of the additional j sewers included in scheme 6 but I Sjlti included in scheme 2. SCHEME 3. By the adoption of scheme 3 an ex-

pmsive flat sewer is involved, and, J seeing that it would necessitate the purchase of additional lards and ail the other expenses incidental to hew works, I do not advisa its adoption ! SCHEME 4. ' To establish works discharging an ! effluent into the Kuripuiri Stream of j a character equal to the- requirement lof the home river authorities for { "non-tidal waters" is one which would present no difficulty, provided the works were properly _ designed and intelligently supervised. SCHEME 5. A pumping scheme need only be , entertained, except upon questions of I relative cost, if a gravity scheme be found impossible. SCHEME 6. At this stage I think it advisable' to direct the Council's attention to what is said in the report on scheme 2 bearing upon the subject of the suitability or otherwise of the lands on the banks of the Ruamabanga for purposes of sewage purification. Th 3 Council are aware of what has been accomplished at the existing works by the comparatively inexpensive expedient introduced by me, at a cost of some £250, and that the methods then employed have proved so satisfactory as td v call for adoption by the Health Department elsewhere. I have examined the lands below

the site of the present works and am satisfied that a field thereabouts 40 acres, the property of Messrs McGregor Bros., bounded on one of its sides by the Makora Greek is in every respect suitable as a site for outfall works, and is remote from any dwelling houses. I accordingly recommend the Council to acquire the site under their statutory powers or otherwise, and so soon as the scheme has been carried to completion to abandon and dispose of the existing outfall area. The site in question can be reached from the Borough boundary inside of one and a half miles at an estimated cost £3,016, including every expanse as against £5,084 plus £4BO ease- 5 ments involved in the adoption of ncheme 2. Having formed a conclusion that the scheme for the Borough Sb that herein befcre referred to as scheme 6, I have prepared drawings for a scheme which will on the basis of 50 gallons per capita per dl?m and excluding storm water provide for the sewage of a population of 47,000 persons reaching the outfall works in each 24 hours, and in such a manner as will enable the whole of the Borough to discharge its sewage at gravity at the site. ' The scheme briefly consists of tour lines of intercepting sewers, capable of etxension, into which the subsidiary of branch sewers can be led. 1. A 13-incb pipe sewer from the outfall sewer at the foot ot Johnstone Street, along to the S.W. end of Nursery' Road, thence by a 15-inch pipe across fields to the intersection of Kuripuni Street and Columba Road, thence a 12-inch pipe up Kuripuni Street, along South Road, through Short Street extension, across High Street, along Snort Street, and terminating at York Street at a depth which will permit of its convenient extension to Railway Road. 2. A 9-inch pipe sewer from, the intersection of Columba Road with Kuripuni Street, along Columba Road for some distance, «up fields into Cashel Street, up Dixon Street to Princes Street, there intercepting the pipe sewers leading from Chapel and Cornwall Streets. This arrangement will relieve the work on the existing system. V 3. A 9-inch pipe from Kuripuni Street, along Crayne Street into Chapei Street, thence along Michael Dixon Street and Pownall to Renall btreet. This latter sewar wi'l intercept all sewage N.W. of and between Kenall and Short Street 9.

4. It is necessary, concurrently with the abandonment of the present works, to carry a pipe line the full length of Johnstone Street, and seeing that the depth of the existing sewer is inconvenient for a considerable length, T propose to make the pips line a 15-inch and to carry it to Bannister Street at a depth some 3ft lower than the present sewer so as to provide a sharper gradient for the eastern , end of Columba Road, and give better facilities for the sewerage of Jean's estate. Scheme 6, including the sewers hereinbefore described, provides for the construction of 1356.47 chains to 17 miles of various Bizes of pipe sewers, 263 manholes and 256 lampholes, these latter being spaced at(.convenient dietances apart so as to furnish efficient meins of control in the working of the system, 3,100 junction?, and up cast shafts at the termination of lines for purposes of ventilation. In order that the Council may fully appreciate the relative works involved in schemes 2 and 6, I hav6 pre pared tha following comparative table, showing the distances covered by the schemes, and the provision made for control.

<The table referred to is too lengthy for insertion in our present issue, but will be pubiisbed at a ater tiau. -Ed. W,A.) ABSTRACT OF THE TABLE REFERRED TO.

It will be at once evident that tl c two schemes differ materially in three respects:— *" In the length of the sewers, In the size of pipes, and In the provision for control. With regard to the sizes *of the pipes I am looking to future requirements, and witb respect to the control I have provided what I deem necessary only -in view of the importance of prompt and ready success to the public sewers. The provision of junctions at 50 feet apart will, la most cases, permit of connection with the pipe sewers without fracture or displacement, as is now invariably the case. I have made no provision for aofomatie flushing, preferring to perfozm that service by hard. Notwithstanding that Scßeme 6 shortens the [outfall sewer by some

120 chains, it will be sean from the foregoing table" that Scheme 6 (inclusive of re-constructive works) provides for 265 in excess of that provided by Scheme 2. The following statement will explain how the excess is brought abuur. contrast:*tie two schemes. Scheme 2. Scheme K. £3,650 Disposal works £2,000 £5,084 Outfall sewer £z,yao £13,256 Varous sizes of „:a,3 sewer manholes, lampholes, etc. £19,300 i £1,200 Re-construction £!,SCB £2,310 Contingencies £1,242 £1,275 Professional eeri < vices £745 ! £26.775, £27.742 x v Add—£l;6oo., Purchase of land £1,600 j £4BO Valtie of • •j.aisd* on outfall u c £2 £l,-100 1 Cost of sewering ■~K*j-t*~sa- new,v dedicated streets £l,lOO £29,955 Total estimated coat £30,542 Say £3l,ouu Although the comparative cost of the two schemes appear to be abouc equal, the Council should not lose sight of the fact that Scheme 6 places at least 3 miles of sewers in Borough highways in excess of the eewers in Scheme 2. The reference of this matter to m calls for a report not only upon treatment and carriage, but •f suggestions as to in fthat direct! > i arid to what points pipe lines shoul 1 be tec 1 . The Council will therefore understand that in outlining the present scheme I had regard only to its extension in such directions as Eeemed to be likely earlier to require it, and so as to top the present and immediately prospective areas. It may well be that the ramifications of the subsidiary or branch sewers could for financial reasons suffer curtailment without impairing the general efficiency of the scheme, but having rearard to the vagaries of land development for building purposes, the unknown quantity of what Mastertqn may become in the near future by the development of new industries and other circumstances, and the practical illustration before the Council that in some.two years the burden of sewering no less than 79 chains of " new streets al an'estimated coat of £l,lOO has been thrown upon /the ratepayers. I cannot but regard trie safer course to pursue to be that of considering the expenditure I outline as a minimum, leaving the Council to decide (if it so elects) what further amount should be added to cover the cost of any additional sewers likely to become necessary during the period of construction. This report is accompanied by a plan of the Borough showing the routes of the several Imes and by longitudinal sections showing dephts, grades, and sizes. I propose to design the works so as to be capable of dealing with the sewage of a population of 10,000 per diem, and to effect purification by passing the effluent over the land in manner not dis-sim-ilar to tha principle at present employed. The works will be so planned as to be capable of extension when the growth of the town demands it. I regard it is necessary that the sewers in Cole Street extension and Lincoln Koad be re-laid owing to the large volume of sub-soil water winch obtains access to the pipe lines, and provision has been made in the estimates to meet the cost of so doing* For some months past a very great difficulty has been experienced with the sewer in Cole Street, so much su, that in order to prevent the lower portion discharging it 3 sewag around and under the houses it was, and is. daily found necessary to hold back the discharge from the upper level by means of stoppers so afford ing th-j necessary relief. It is hew-

Coutinued fr.im Page 5. ever a somewhat questionable pro. ceeding inasmuch as at all othertimes of the 24 hours the several pipe lines un the lower portions are recep-1 tacles for the retention of the severa discharges, a condition of things which utrJer any circumstances the Council is bound to remedy. The financial effect of the proposal upon the present rateable values -would be as follows, i.e.: For clearoess the drainage area has been bordered in sepia on the plan. Per cent. Unimproved rateable value in drainage area not connected with sewers £72,342 .134 Unimproved rateable area in drainage area connected with sewers ' £377,651 .701 Unimproved rateable value outside drainage area £88,446 .165 Total unimproved rateable value at. 31st March, 1910 £538,439 If the proposal is given effect to the 'expenditure involved wuuld be applied thus: In extension of sewers in the drainage area £20,666 .667 In providing sewers outside of the drainage area £10,334 .333 It will be seen, therefore, that the cost is about equally divided in relation to the value of ihe areas and to the needs. For the purpose of illustration I assume the Loan will be raised at 6 per cent interest and sinking fund combined, repayable over a period of 32 years. The annual payment would then amount to £1,860 on a Loan of £31,000 (there is some reason to anticipate that the State Loan Board will advance the money at a less rate). £1,860 per annum is equal to a rate of .82d in the £ on the whole of the present unimproved rateable va ue. Taking the average dwelling house to have an unimproved vatee of £l9O, a rate of .821 in the £ represents an ! annual payment, by that property uf 12s llfd as against at Jeast £2 12s per anr.um paid' by occupiers outside the drainanu :ire t « fir the removal of night soil; m>d in miny instances' a payment of 3* lljd per annum by occupiers in the drainage area (the existing loan) who receive no convenience whatever from the

sewers. For some years past an annual | levy of £2OO equal to .09d in the 1 £ (the cost of lemoving niglit-3oil in the drainage area where sewage are not available) has been made in the general rate. So soon as the scheme has been carried to completion this levy will cease; it follows, 1 therefore, that the nett cost of the scheme on the present unimproved value is reduced to .73d in the £. The present drainage loan charge is equal on the existing unimproved value to a rate of .25d in the £ over the drainage area, and as it would appear improbable that a loan could not be raised on similar .terms, i.e., 3& per cent interest and sinking fuud, Ido not advise a conversion as previously proposed but to furnish the nceessary equity by means of a Special Order by casting the burden of all the drainage rates over the whole of the Uurougb. * The greatest effect will then become .25dplus ,73d in the £, equal to say Id in the £, and equalling an annual charge of 15s lOd for a period of 32 years on a property having an unimproved value of £l9O.

THE "WAIBARAPA AGE, SATURDAY. JUNE 4, 1910, -5 ' ■ PERICLES WRECK. £200 NOT ENOUGH. | BOXING. | Telegraph Handicap, 5 furlongs.-— Ascalon 8.11, Repeat 8.9, Moree 1 SOUTH WAIRARAPA TROTTING CLUB. THE DRAINAGE OF MASTE8T0N. A COMPREHENSIVE 1 say £1,100, lards for d.sposal works <™ e to " e referred t0 IS too taigtby . n . ' , .._ for insertion in our present issue, at £1,600, and easements at £480, but will be published at a aterdak. SALVAOK. COMPANY %y ' FORMED. FOR WEST AUSTRALIAN M,'SP. JOHNSON-JWFFRIES FIGHT. 3 8.1. Celebrity 7.8, Rqngomai 7.6, jHimona 6.7. Seawind 6.10, Kimrmrian 6,7, Fighting Maid 6.7, CleBy "Zetland." Beautifully fine weather again favJ and assuming the estimates to be —Ed. W,A.) sound, the cost of the scheme would ABSTRACT 0F THE TABLE RE . then approximate to £HO,000, to PERRED TO. ——— -*" Received June 3, P.30 p.m. Received June 8, 9.30 p.m. SENSATIONAL STATEMENT. ver 6.7, Kitapo 6.7, Suiiroae 6.7, oured the Club yesterday, and the SCHEME. ■ which must be further added the Original Scheme 6,, PERTH, June 3. PERTH, June 3. Torpoint 6.7. attendance of the public was consid- , estimated cost of the additional J Scheme. as now ' Tno "Pericles Salvage Company" has been formed with a capital of .£6,000. Operations at the scene of the wreck will be commenced next The Labour Congress has resolved United Proas Association—By Electric Telegraph Hurdles Hack Handicap, ljj mile. ered the largest yet recorded at PREPARED BY THE ENGINEER. sewers included in scheme 6 but j details. Scheme 2. submitter. in favour of raising the salari?s of Copyngh -Pikapo 11.6, Niah'-ita 11.2, Rosethe Moroa CouiEeJj The arrangements Jp included in scheme 2. j Pipe Fewers. Chains. Chains. members of the West Australian Parliament to £400, as it considers Received June 3, 10.15 p.m. | NEW YORK, June 3. grove 9.8, Beeiine 9.3, Gaelic 9.0. Maimai 9.0. in can' ection j?i h the meeting were very satisfactory, and the racAP?ROVED BY COUNCILLORS IN COMMITTEE. SCHEMES. J JS* «?' By the adoption of scheme 3 an ex- * 2 ,ncn 262 31 714 58 llfi 03 "week. the present salary yf £200 totally A representative of the Chicago AUCKLAND R.C. MEETING. ' ing interesting throughout The race a * • - i j i 15 inch 280 pensive flat sewer is involved, and, 10 . . . v ' ' 18 men j seeing that it would necessitate the purchase of additional lards and ail Total r"L-tir.c-H. T.0D1 »7.<!«> MAST^Ol^OlfflKG inadequate as a livi.ier wage. "Examiner" interviewed Governor Gillette of California, who declared "that the result of the JohnsonWIMMEKA WINS THE1UURDLES. between Bingana and Moa 'Dillon in the principal event, the Gray-town Handicap, was one of the most excitTOTAL COST £31,000. lfiC.hG 1,256 47 r & PJG*03F CIAJB. AEEUSEIflOTTS. Jeffries fight had been pre-arranged. By Telegraph—Press Association. ing ever seen in the district, and At a meeting of the Masferloi Borthe other expenses incidental to hew Manhole- 1 73 f 63 _ _- c Johnson is to win £i!0.000 or more if AUCKLAND, June 3. there was a considerable amount of oujrh Uoancil in commuter, held on [ works, 1 do not adviss its adoption | Lamphoie- 137, 25>i The fallowing nimiinttio.ia have .'been receive:! fnv the Indies' tfrace■i«i- frnm Kaitoke. ti be fiown AMY CASTLES AS '"'MADAM BUTTERFLY." he loses, owing to the greater val;e of 1hi> moving pictures. In any The Auckland Racing Club inaugurated its Great Northern Steeplechase enthusiasm evinced over it. Three bookmakers were kept busy laying Thursday evening, last, the Borough Engineer, Mr W. T. Mansfk'ld, Fellow TnR-hitnt.fi SunitsVfV Flncv'inpprs find ' nusnmg cnauunrs y.x bUHtiDflto 4. Connections 400 To establish works discharging an Junctions — 3,100