Tenders are invited for Provision for Operation and Maintenance of Phalaborwa Waste Landfill Site for a Period of Three Years (36 Months) LANDFILL MANAGEMENT FORUM During the execution of the contract, the contractor, the employer, and other operators shall meet at approximately monthly intervals, arrangements for the O&M Landfill Management Committee (LMC) meeting being made by the /employer. The contractor shall ensure that a member of his/her staff, who is sufficiently senior to be able to make operating decisions and commitments, as well as being familiar with the operation of the disposal site, is always in attendance at these meetings. The meetings will be held to discuss all and any matters relating to the operation of the site, and to up-date and review the overall plan of operation. Decisions made, recorded and agreed upon at these meetings will be binding on the parties Periodic (initially monthly) site inspections or audits will be undertaken by the employer. During this exercise a specially designed pro-forma audit checklist will be filled out, which will numerically assess important aspects of the operation. This, together with appropriate recommendations, will be submitted to both the municipality and the contractor. These inspections may or may not be conducted in conjunction with the contractor at the monthly meetings. The frequency of meetings and audits will be increased if operational standards are not acceptable. At the discretion of the employer, such periodic site inspections can later be undertaken quarterly 14. SALVAGE RIGHTS 10 Sorting or recovery of other recyclable waste will only be done by an already appointed recycling company under a controlled condition at the recycling yard area. The contractor will be responsible for recyclers. 15. OPERATION OF THE SITE The contractor shall operate the landfill in accordance with the landfill permit and other agreements over and above the license condition agreed to between the contractor and the municipality The operation of the site by the contractor will involve the following major functions: access to the site and access control Waste generation reports maintenance of access roads and controlling of traffic within the site waste deposition and compaction provision and placement of cover material control of nuisances provision and maintenance of fire breaks construction and maintenance of site drainage leachate control, pumping of all sumps (leachate and sub-soil) and leachate dams record keeping general maintenance of grass and groundwater monitoring boreholes repair and or replace any damaged infrastructure The principles regarding the above are discussed below, with a view to providing the prospective contractor with a clear concept of what is expected of him/her. a. Access to the site and access control The Contractor shall be responsible for keeping the entrance to the site via the main access road in a clean and neat state. This includes the removal of all mud and refuse deposited on the road in the vicinity of the site entrance (particularly during wet weather) and the picking up of all windblown or scattered refuse and litter emanating from the waste delivery and disposal operation. This activity must be performed daily. The section of road to be cleaned stretches from the entrance of the site to 700m. Access control shall at all times be performed in a responsible manner, thus ensuring that only vehicles with waste loads permitted in accordance with the permit conditions and the Minimum Requirements for Waste Disposal by Landfill, 1998, will be allowed on site. Records of all vehicles entering the sit shall be maintained at all times. b. Maintenance of access roads and controlling of traffic within the site The contractor shall construct and maintain gravel/building rubble access roads to the disposal area on site as and when required during the contract period. The roads must be: usable in both wet and dry conditions. comfortably able to accommodate two large passing vehicles. sufficiently smooth and even without potholes to enable large loaded vehicles to travel at 20km/h, without damage or discomfort. 11 flat enough to enable vehicles to stop and move off without undue difficulty and slipping. All gradients shall not be steeper than 1 in 10 on downhill and 1 in 15 for uphill. watered during dry weather for dust suppression and have sufficient surface drainage for wet weather. The road along the perimeter of the fence must be maintained, at all times, for maintenance and security patrol purposes. Clear and easily understandable speed limit, traffic control and direction signs must be provided from the site entrance to the off-loading point at the working face. c. Waste deposition and compaction Waste deposition will be conducted in adherence with the proven sanitary landfill principles (as per Minimum Requirements for Waste Disposal by Landfill, 1998) of spreading, compacting and daily covering of waste. In order to expose as little waste as possible to rainfall and the environment and to afford the best compaction. Waste shall be deposited at the toe of the disposal area and worked upwards by spreading in approximately 250 mm thick layers, and compacted by using three passes of a landfill compactor per layer of waste to a density of at least 750kg/m3 . In order to maximize compaction effort, the slope of the working face shall be at an appropriate angle of between 1:3 and 1:4 to enable the plant to spread and compact the waste deposited, upwards upon the working face. The slope shall, however, not be so steep as to induce slipping of the driving wheels or tracks of the plant. Slopes that are too flat, on the other hand, result in excessive use of daily cover. Cover material shall be deposited above the disposal area at the top of the ramp so as to enable exposed refuse to be covered as soon as required and not necessarily only at the end of the operating day. At the end of an operating day all waste must be contained within the disposal area. The entire waste surface area shall then be enclosed by cover material having a minimum compacted thickness of 150mm and a maximum compacted thickness of 250mm above the mean surface of the waste. Intermediate cover, in areas not utilised for an extended period of time, shall be placed at a thickness of 300 mm. Builders rubble may not be used as cover material, except for the preparation of wet weather cells, or with permission from the employer/engineer. The finished cover surface shall have a minimum slope of 3% and a maximum slope of 5% and shall be sufficiently uniform to ensure that runoff is encouraged and that the ponding of water cannot take place. In order to maintain the required surface gradients, level profile boards shall be erected and used for finishing off of each disposal area. Maneuvering space at working face Space must be available at the working face to enable vehicles to maneuver and reverse without causing excessive congestion. A disposal area width determined by the number of vehicles disposing simultaneously must be maintained to enable vehicles to work alongside each other, while the waste is compacted. In order to avoid overturning 12 of vehicles, the working face area must also be located and graded so that the vehicles operate on level ground. Animal carcasses Animal carcasses are to be disposed of at the toe of the working face. The carcass must be covered immediately by disposing the next load of waste onto the carcasses, allowing for a minimum of 0,75m of waste and cover material. The contractor shall pay special attention to ensuring that the whole carcass is covered, with no protrusions of feet/hooves, tails, heads/horns etc. Notwithstanding the above, stricter regulations may be enforced by the Environmental Health unit within Ba-Phalaborwa Municipality. Spoilt foodstuff / Liquor / Beverages Spoilt foodstuffs of condemned products may be disposed of on the landfill by the method of Safe Disposal. The foodstuff/liquor must be disposed of at the toe of the working face where after it must immediately be destroyed beneath the compactor and covered by disposing the next load of waste onto the foodstuff, allowing for a minimum of 0,75m of waste and cover material. Extreme care should be taken that none of these foods/liquor/beverages are salvaged by any of the vehicle drivers or operating staff. Notwithstanding the above, stricter regulations may be enforced by regulatory authorities concerned. Allowance for safe disposal, by appointment, shall be seven days a week. Bulky waste The contractor shall reduce the volume of items of bulky waste, as far as is practical, by the use of his/her plant. Wet weather Vehicles may become stuck in the mud when the site is wet. In view of this, the contractor shall ensure that temporary access roads are passable in most situations, with a suitable contingency plan available for continuing the operation in the extreme situation where the access roads are impassable. A wet weather cell on the main disposal site shall be kept available which has a surface of coarse well drained material, such as builders rubble or coarse ash, which can be used as the disposal area when conditions become too wet in other areas. A wet weather cell to accommodate at least one weeks waste during adverse weather conditions must be maintained. Vehicles stuck on site The contractor shall have available on site at all times (during normal operating hours) heavy-duty towropes or towbars, and he/she shall assist any vehicle that becomes stuck on the Site with minimal delay. Stuck vehicles must be towed out and under no circumstances may they be pushed out. Tender Link : http://www.phalaborwa.gov.za/tenders/tenders.php
