"May 1995 Ed Burke Project Manager This project is"
SOPAC Trip Report 198 May 1995 WATER AND SANITATION PROJECT VISIT TO RAROTONGA 22-29 March 1995 Ed Burke Project Manager This project is funded by the United Nations Development Program  21 March 1995 Warmly met by a delegation of Cook Island officials at the Rarotonga airport. 22 to 28 March 1995 The purpose of the visit was to attend the Third Coastal Protection Meeting. Attached is a Meeting Notice stating the background of the meeting (Annex 1). Also attached is the Meeting Agenda (Annex 2) and a List of Participants (Annex 3). A record of the meeting and its conclusions is documented in a SOPAC/SPREP report “REPORT ON THIRD COASTAL PROTECTION MEETING, 22- 29 March 1995, Rarotonga, Cook Islands.” Regarding the CPUs, it is my option that the units have contributed to the cessation of erosion and promotion of sand accumulation of the section of beach protected by them. However I can not agree to the claim that the CPUs were the sole reason for sand accumulation behind them. There appears to be an accretion of sand on the adjacent beach without being protected by CPUs. No design information was presented to enable an engineer to size and use the CPUs over a range of “storm” criteria. There are other factors that could have influenced the sand accumulation behind the CPUs. Thus I am unable to endorse the claims made by the developer of the CPU until they have been proven as set out in the report. 29 March 1995 Met with Ken Browne, Director of Water Supply. Ken (along with the Minister of Works) requested that we review Chapter 7: Liquid Waste Management, of the ADB Draft Final Report for the Integrated Urban Infrastructure Project - Rarotonga Cook Islands (March 1995). See copy of attached fax dated 4th April 1995 (Annex 4). I advised Ken that we could provide this service. I introduced Ken to Gerry Byme, Consulting Coastal Engineer, who was attending the coastal meeting. Gerry discussed location and installation of potential outfall pipes to discharge sewage into the sea with Ken. Ta kuava in e Stream On 31 January 1995 Ken and I visited the water supply intake on this stream and water was flowing over the intake weir. On this visit, some two months later, no water was flowing over the weir. The entire flow was entering the water supply system. Events like this should be documented and analysed thus helping to assess the capacity of the water resource of the catchment. Questions like, is this a common occurrence, or due to lack of rain, or increasing water consumption, or a combination of reasons, should be asked to better understand the catchment. Tupapa Stream I visited this catchment and water supply intake for the first time with Ken. This intake is similar to that located on the Ngatoe Stream. It consists of a weir structure across the stream with a coarse screen piping water a ‘filter” located about 50m downstream on the left bank. The filter consists of a concrete box structure with graded material placed over perforated pipes. The coarse screen requires cleaning to remove leaves and other debris that tends to block the s e e n [PR198 - Burke]  openings. The top layer of the filter also requires periodical cleaning to remove debris that has been deposited over time. A new water meter had recently been installed with a measured flow rate of 16.7 I/s. Suitable thrust and anchor blocks should be installed at each side of the meter. Downstream of the intake, near the water meter location, four ponds have been constructed for the farming of prawns. Turangi Stream This stream was re-visited. Comparing photographs of the intake, the water spilled over the intake weir appeared to be about the same as the last time I visited the country in January. Of all the water supply sources this stream catchment has least development in its upper reaches and has the best water quality. Water from this source is reticulated as far as the airport, [PR198 - Burke]  List of Reports that Mike Gourlay had with him at meeting Proceeding of the Engineering In Coral Reef Regions Conference Magnetic Island, Townsville, Australia 5 - 7 November 1990, Dept. of Civil Engineering , The University of Queensland, Australia June 1991. American Samoa Water Resource Study, American Samoa Shore Protection Manual, US Army Engineer District, Honolulu September 1980. Coastline Management Manual, New South Wales Government, September 1990 Coastal Hydraulics & Sediment Transport in a Coastal System by M.R. Gourlay & C.J. Apelt May 1978 report February 1985 Heron Island Spoil Dump, M.R. Gourlay & J.S. Fell Resource Publication #28. Great Barrier Reef Marine Park Authority. The Study on Coastal Protection & Port Improvement in the Cook Islands. August 1992, Japan International Cooperation Agency (JICA). [PR198 - Burke] Annex 1 MEETING NOTICE THIRD COASTAL PROTECTION MEETING RAROTONGA, COOK ISLANDS, 22-29 MARCH The background of this meeting is as follows. During 1994, at the request of the South Pacific Forum Heads of Governments Meeting, the SOPAC and SPREP regional organisations have held two earlier meetings on coastal protection. These meetings held in Apia and Suva were attended b y many geoscientists, engineers, coastal managers and environmental officers from seventeen countries and territories. New Zealand provided funding for the Apia Meeting and Australia supported the Suva meeting, In the report, submitted from these meetings to the 1994 Forum Meeting held in Brisbane, were several recommendations. The report and the recommendations were endorsed b y the Forum and SPREP and SOPAC were directed to draw up and implement an action plan in respect of the recornmendations and report back to the 1995 Forum. SPREP and SOPAC whilst working on a draft action plan in respect of the recommendations and report to the 1995 Forum, agreed that the proposed meeting in Rarotonga will be a restricted one of technical experts convened specifically to address two of the issues: . The Forum endorses the establishment of guidelines for sound engineering practice in coastal zones of the Pacific Island region. . The Forum endorses the need for detailed engineering assessment, including economic evaluations, of new coastal protection systems. The Cook Islands Government has agreed to host this meeting which is planned to be held 22-29 March and once again will be a joint SOPAC-SPREP endeavour. Annex 2 THIRD COASTAL PROTECTION MEETING (A Small Meeting of Experts) RAROTONGA, COOK ISLANDS 22-29TH March, 1995 DRAFT PROVISIONAL AGENDA Chairman, George Cowan, Secretary Public Works, Cook Islands Tuesday 21 March 23.10 Arrive from Fiji NZ 46 Wednesday 22 March AM Free 2.00pm Opening (MC Tony Utanga) Prayer Takamoa Theological College Address Director of SOPAC Address Minister of Works Afternoon Tea Appointment of Drafting Committees State of the Art and Current Practices in the Island Countries Thursday 23 March Consideration of guidelines for sound engineering practice Presentations by individuals on general, thematic and case study issues (Drafting Committee 1 ) to prepare report) Friday 24 March Procedures for engineering assessment and economic evaluation of new-protection systems Presentations by individuals on general, thematic and case study issues (Drafting Committee 2) to prepare report) 7-30pm Cocktail hosted by Minister of Works and Minister of Marine Resources Saturday 25 March Field Trip: Avarua Foreshore, Airport, Rarotongan Hotel Sunday 26 March Drafting Committees prepare reports Monday 27 March AM Drafting Committee 1 Reports: Discussion PM Drafting Committee 2 Reports: Discussion Tuesday 28 March AM Field Trip - Free PM Consideration of Draft Final Record and Documents Wednesday 29 March AM Adoption of Record and Documents Closing PM Free 19.25 Depart for Fiji NZ 47 Annex 3 LIST OF PARTICIPANTS Tony Utanga Director of Scientific Research Tenga Mana Ministry of Marine Resources Civil Engineer PO Box 85 Ministry of Works Rarotonga, Cook Islands PO Box 102 Ph. 28721 Rarotonga, Cook Islands Fax. 29721 Ph (682) 20034 Fax (682) 21134 Don Dorrel Coastal Environmental International Ltd Nooroa Ben Parakoti Coastal Consultants Acting Harbour Engineer PO Box 74 Ministry of Trade, Labour & Shipping Rarotonga PO Box 61 PH (682) 22055 Rarotonga, Cook Islands Fax (682) 21040 Ph (682) 28810 Fax (682) 23880 Filipo Taulima Acting Director of Works Godfred Shuma Public Works Department Regional Adviser Vaiaku ESCAP Pacific Operations Centre Funafuti, Tuvalu Private Mail Bag 004 Ph (0688 - 20 300) Port Vila, Vanuatu Fax (0068 - 20 301) Ph (678) 23458 Fax (678) 23921 Clive Simpson Senior Engineer Projects/Planning Dr Michael Gouday Ports Authority of Fiji Senior Lecturer in Civil Engineering Suva, Fiji The University of Queensland Ph (304833) Queensland, 4072 Fax (30055) Australia Ph (617) 3653913 Philipp Muller Fax (617) 3654599 Director SOPAC Ed Burke Private Bag Engineer Suva, Fiji Project Manager Water & Sanitation Project Ph (679 381-377) SOPAC Fax (679) 370-040 Private Mail Bag €-Mail Philipp @ sopac.orstom.fr Suva, Fiji Ph (679) 381377i381139 Stuart G Kingan Fax (679) 37004 Scientific Research Officer E/-mail Ed@sopac.orstom.fr Ministry of Marine Resources National Representative to SOPAC John Bell Rarotonga, Cook Islands Engineering Consultant Ph (23 687) 93a Wai-iti Rd Fax (29 721) Timaru, New Zealand Ph/Fax 64.36845272 Donald Forbes Coastal Geologist Samuel W. B r o w SOPAC Acting Director Private Bag Planning & Design Services Suva, Fiji Ministry of Works Ph (679) 381 139 PO Box 102 Fax (679) 370040 Rarotonga, Cook Islands E-Mail Don@sopac.orstom.fr Ph (682) 29427129428 or Forbes @ Agc.bio.ns.ca Fax (682) 21 134 Annex 3 (Cont'd) C George o w a n Teni Tipokoroa Technical Consultant to Government Building Inspector attached to Dept. of Civil Aviation Project Co-ordinator Rarotonga, Cook Islands Ministry of Works Ph (682) 20034 PO Box 222 Fax (682) 2 1 134 Rarotonga, Cook Islands Ph 20034129999 Hm RussellHoworth Fax (682) 2 1 134 Training Co-ordinator SOPAC David C Ngatupuna Private Bag Civil Engineer Suva, Fiji Ministry of Works Ph (679) 381-377 PO Box 102 Fax (679) 370040 Rarotonga, Cook Islands E-mail Russell @ sopac.orstom.fr Ph (682) 20034 Fax (682) 21 134 Vaitoti Tupa Senior Conservation Officer John Tini Conservation Services Chief Mechanical Training Officer Rarotonga, Cook Islands National Disaster Management Committee PO Box 371 Representative Ph 21 256 Ministry of Works PO Box 102 Fax 22256 Rarotonga, Cook Islands Ph (682) 20034 Fax (682) 21 I34 Gerry Byme Consulting Coastal Engineer 125 Nelson Rd South Melbourne 3205 Australia Ph (613)6992819 Fax (613) 6820297