The URL can be used to link to this page

Home My WebLink AboutWD-41-85 Q File No'--... _. ' , e..._..__ CORPORATION OF THE TOWN OF NEWCASTLE PUBLIC WORKS DEPARTMENT R. DUPUIS, P. ENG., DIRECTOR HAMPTON,ONTARIO TEL.(416)263.2231 LOB 1 J 0 987.5039 REPORT TO THE GENERAL PURPOSE AND ADMINISTRATION COMMITTEE MEETING OF JUNE 17, 1985. REPORT NO. : WD-41-85 SUBJECT: STORM SEWER OUTFALL FOR RECONSTRUCTED PARKING LOT BOWMANVILLE MEMORIAL HOSPITAL EXPANSION RECOMMENDATION: It is respectfully recommended: 1. That this report be received; and, 2. That Bowmanville Memorial Hospital be advised that any upgrading of storm sewers on Prince Street between Liberty Street and Simpson Avenue to accommodate the needs of their reconstruction will be the responsibility of the hospital ; and, 3. That a copy of this report be forwarded to Bowmanville Memorial Hospital . . . . .2 Page 2 REPORT NO. WD-41-85 REPORT: During preliminary discussions between the Bowmanville Memorial Hospital 's architect and the Town, it was determined that an outfall on Prince Street for new on-site storm sewers would be required. The hospital expansion would include a larger paved parking lot with catchbasins and storm sewers, and other areas would be drained to these storm sewers. Through the more detailed site plan review process, specifics relating to such an outfall were examined. Based upon information contained in the Storm Drainage Study for Bowmanville, prepared for the Town in August, 1978, by Totten Sims Hubicki (see attached excerpt) it was determined that the existing storm sewer on Prince Street easterly to Frank Street, although not presently causing the Town or area residents problems, was deficient, and could not accept additional runoff. Accordingly, any outlet from the hospital would have to include reconstruction of this section and restoration of the road. Recognizing costs associated with this, Town staff investigated the possibility of a connection to the Region' s storm sewer on Liberty Street, however, that sewer was found to have insufficient capacity to carry the additional runoff. Thus, a storm sewer outfall on Prince Street from the hospital , easterly, became the most logical alternative to pursue. Information from the Bowmanville Storm Drainage Study was passed on to the hospital ' s architect with the caution that it should be verified through field investigation. . . . .3 Page 4 REPORT NO. WD-41-85 In light of the above, it is staff' s recommendation that the hospital be responsible for any necessary off-site improvements or upgrading to accommodate their expansion. Council may, however, wish to adopt one of the other two alternatives. Respectfully submitted, R.G. Dupuis,4P. Eng., Director of Public Works. RGD:jco June 5, 1985. cc: Bowmanville Memorial Hospital i l Page 3 REPORT NO. WD-41-85 Basically, the information given at that time showed that the storm sewer on Prince Street from the hospital to Frank Street would have to be replaced, but the section from Frank Street to Simpson Avenue was capable of handling the extra flows. Estimated cost for replacement to Frank Street is about $25,000. While the hospital and their architect felt that the Town might consider absorbing the cost of this work, it was staff's position that unless otherwise directed by Council , development of the expansion would be through normal site plan procedures which includes upgrading or oversizing of sewers to accommodate development of the site. As indicated previously, the existing storm sewers, although deficient, are not causing problems and, Prince Street , itself, is in relatively good condition. With more detailed investigations, certain other information relating to the storm sewers on Prince Street was discovered. It was found that the storm sewer between Frank Street and Simpson Avenue is not 27" as indicated in the Bowmanville Storm Drainage Study, but rather is 15" in diameter. Thus, that sewer also has insufficient capacity to accept the additional flows from the hospital and, if it is to be used for that purpose, will have to be enlarged. Costs for such enlargement are estimated at $20,000. The hospital is now requesting an indication of the Town' s position with respect to the storm sewer. If the hospital is permitted to connect to the existing deficient storm sewers, surcharging will occur and there may be flooding problems, even on private property. If the Town were to cover the cost of replacing the storm sewers it would be dealing with the matter in a way different than other cases and, would incur costs of about $50,000. , which under present circumstances, are not a justifiable expenditure. .. . .4 Q„ • EXISTING STORM SEWERS .......15....... DEFICIENT STORM SEWERS & RECOMMENDED REPLACEMENT SIZE A15 EXISTING MANHOLE INVENTORY No. ■ „ ■ PROPOSED STORM SEWERS & 12 RECOMMENDED SIZE -.A's ► - DIRECTION OF FLOW A EXISTING STORM SEWER OUTLET !A, 36” H6 36,• f m F4+;�ss4�f-�♦.ss as-s+t�-s++ta-tai I 1 N � 6; ^ Q29 m T N65 N67 N6. 12„ � /\ �- ( l QUEEN QUEEN ST. _ 050 m 0zB • ► 04• .T NGL �/ G �.4rzKlJG LOT m Ns 8 15 E STREET —v Nse Nss nz6 476 15 Qz4 15 % i Qz3 022 O 370/ z \ o ai os J� JANE_- STREET < I '�— 12 016 015 o,a 0,+ I C O o/2 m n NELSON S D Ut1 � o �— --- r- -I d d MEMORIAL HOSPITAL - BOWMANVILLE 47 LIBERTY STREET SOUTH, BOWMANVILLE, ONTARIO L1C 2N4 TELEPHONE 416-623.3331 40� May 22, 1985 Office of the Administrator Mr. Ron Dupuis `„ 1. Director of Planning Town of Newcastle C;1 ;( 2 Hampton, Ontario 'fOp� E ,, - '� Dear Mr. Dupuis : PUBL,� WORKS At a recent meeting to discuss site development for the Hospital, the Town representative present, Mr. Tony Connella, indicated that the previous expecta- tion of the existence of an appropriate storm sewer east of Frank Street does not exist. This , then, apparently means that new lines would be necessary from the Hospital through to Simpson Avenue. In the interest of the Hospital maintaining its momentum regarding the site plan approvals , it would be appreciated if your department could indicate exactly what steps we should now take and what require- ments would be necessary relative to appropriate storm drain needs . Details of the sewer specifications and estimates of the cost would be most helpful. Also, we were informed that the Town has some specifics relative to the development of parking lots . A copy of these recommended specifications would be useful to us in the final site plan development . An early reply will be most beneficial. Sincerely, E. Elston REE: rc Executive Director FULLY ACCREDITED BY THE CANADIAN COUNCIL ON HOSPITAL ACCREDITATION