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HomeMy WebLinkAbout04-13• RESOLUTION No. 04-13 A RESOLUTION to adopt and approve an amendment to the Clallam County Comprehensive Solid Waste Management Plan Update 2006. WHEREAS, in 2005 Clallam County and the Cities of Forks, Sequim, and Port Angeles entered into an Interlocal Agreement for the purpose of updating a comprehensive solid waste management plan as required by RCW Chapter 70.95; and WHEREAS, the county and the three cities did jointly prepare a Comprehensive Solid Waste Management Plan Update 2006 (the 2006 Plan Update); and WHEREAS, the 2006 Plan Update was adopted by each of the four jurisdictions in 2007 and it currently is in effect; and WHEREAS, Section 3.4.3 of the 2006 Plan Update provides that the Plan may be amended by agreement of the jurisdictions that participated in the interlocal agreement and subsequently formally adopted the 2006 Plan Update; and WHEREAS, an unanticipated change has occurred in one closed cell of the Port Angeles landfill; and WHEREAS, that change should be promptly investigated and remedial action, if any, should be considered; and WHEREAS, the 2006 Plan Update should be amended to reflect the changed condition and response to it; and WHEREAS, the City of Port Angeles agrees that the amendment process should be undertaken and the 2006 Plan Update should be amended to address the unanticipated changed conditions; and WHEREAS, the other three jurisdictions have stated their concurrence that the amendment process should be undertaken and the 2006 Plan Update should be amended, NOW, THEREFORE, BE IT RESOLVED 1. The City of Port Angeles agrees and confirms that the Clallam County Solid Waste Management Plan Update 2006 should be amended, and that the • • amendment process should be undertaken, for the purpose of adopting the attached amendment, which adds to the 2006 Update Plan provisions relating to the Port Angeles landfill stabilization project. 2. The City of Port Angeles does hereby approve and adopt the attached as an amendment to the Clallam County Comprehensive Solid Waste Management Plan Update 2006. PASSED by the City Council of the City of Port Angeles at a regular meeting of said Council held on the 1 "1' day of March, 2013. ATT fre- irra Janessa Hurd, C. Clerk kie/A i eat, j IA:41(d., SolidWasteMgmtPlan 02 04 13 wpd -2- 00,,L-g,ilL Cherie Kidd, Mayor APPROVED AS TO FO William E. Bloor, Ci y Attorney • CLALLAM COUNTY COMPREHENSIVE SOLID WASTE MANAGEMENT PLAN Amendment to Address Port Angeles Landfill Stabilization • The Comprehensive Solid Waste Management Plan Update 2006 is amended by adding to it the following: 7. DISPOSAL 7.1A introduction The purpose of this amendment is: To identify the needs and opportunities presented by the continuing erosion of the marine bluffs at the north margin of the closed Port Angeles Municipal Landfill. The City of Port Angeles Public Works and Utilities Department is evaluating alternatives to reduce or eliminate the risk of refuse entering the marine environment and to slow down the rate of bluff erosion. 7.3. IN- COUNTY LANDFILLING (Closed Landfill Oversight) 7.3.1.1A City of Port Angeles Landfill The City of Port Angeles Public Works and Utilities Department has lead oversight responsibilities for the Port Angeles Landfill. Clallam County Environmental Health Services works with Ecology to provide regulatory and technical oversight. The Port Angeles landfill was originally a regional dumping site purchased by the City in 1947. See Figure 1A, Vicinity Map, and Figure 2A, Site Map. The WAC 173 -304 compliant cell is located adjacent to the coastal bluff, and contains approximately 750,000 cubic yards (CY) of municipal solid waste. The west and east portions of the cell differ in important characteristics, and are referred to as the West 304 Cell and the East 304 Cell. The WAC 173- 351 compliant cells (351 Cell),which includes subcells 1, 2, and 3 lies south (inland) of the 304 Cell. The Port Angeles Municipal Landfill was closed in 2007 according to the requirements of the State's Criteria for Municipal Solid Waste Landfills (WAC 173 -351) and Clallam County Solid Waste Regulations. Since closure of the landfill, the Port Angeles Transfer Station was constructed on the site in 2006 and is currently in operation. Reserve accounts for closure and post- closure costs for the closed landfill are being funded by a portion of the landfill tipping fee. Since 2001, there has been concern with bluff retreat and erosion migrating into the Port Angeles Landfill facility. In conjunction with the landfill closure, a seawall was constructed in 2006/2007 at the base of the West 304 Cell to prevent pollution to the Strait and to protect the landfill from further erosion. The slope above the wall was graded back to 1.25:1 (slightly flatter than 45 degrees), and was stabilized with erosion control plantings and geotextile fabric. Waste from the bluff and the beach was relocated to the 351 Cell, which was still open at that time. Since the installation of the wall, bluff erosion along the unprotected eastern half has continued, further threatening slope failure and the uncontrolled release of refuse into marine waters. In the summer of 2011 during maintenance inspections, City of Port Angeles staff observed that the bluff face had experienced localized failure at one location along this • unprotected eastern half that had exposed some waste at the top of the bluff and had broken a • perimeter drain pipe that was left dangling over the edge. 7.3.2A Needs and Opportunities Port Angeles Landfill Localized failure that had exposed parts of the cell lining and waste refuse is a water quality and human health threat. In addition, analysis shows that, due to highly erosive wave impacts and inherently unstable vertical bluffs, the portions of the landfill shoreline not protected by the seawall are experiencing continued high rates of erosion. Erosion to date has reached the extent that the City of Port Angeles needs to undertake actions to reduce or eliminate the risk of refuse from entering the marine environment. The City of Port Angeles Public Works and Utilities Department is evaluating the alternative methods necessary to remove exposed refuse, repair drainage facilities, and to slow down the rate of bluff erosion. As part of the ongoing evaluation, the City is also assessing mechanisms to reduce the cost of the alternative corrective actions, including the impact on utility ratepayers; and assessing alternative funding for the corrective action. 7.3.3A Alternative Methods Port Angeles Landfill The City of Port Angeles Public Works and Utilities Department has developed a number of alternatives to reduce or eliminate the risk of refuse entering the marine environment. Some alternatives also would decrease the rate of bluff erosion. To reduce or eliminate the risk of refuse from entering the marine environment, waste would be removed from the East 304 Cell, in part or completely, and relocated on -site or transferred off -site. Reconsolidated onto the East Cell 304 (south end). The preferred location for relocating waste onsite would involve re- opening the existing 351 - compliant cell on the Port Angeles Municipal Landfill industrial property, and relocating waste within the existing permitted footprint and height. All relocated waste cells will meet current solid waste landfill standards under WAC 173 -351 and address engineering and regulatory challenges of placing a new cell onto an existing landfill cell. Off -site relocation would include transfer to an approved RCRA Subtitle D landfill. The alternatives for removal of 304 Cell waste and relocation on -site would require some or all of the 750,000 cubic yards of waste in the 304 Cell, to be moved within the permitted footprint and maximum height of the existing 351 Cell. Depending on the proportion removed, the remaining East Cell 304 may be required to have an updated landfill cover system installed with gas collection. The expanded 351 Cell would provide capacity within the existing landfill to accommodate the amount of refuse removed from East Cell 304, with the exact dimensions of the new cell to be determined by the amount re- located. The location of the new cell could be in or on top of existing cells. The cell would be constructed within standard landfill waste placement /compaction requirements. Once final grades are achieved, the disposal cell will be closed in compliance with current landfill WAC 351 standards. Bluff stabilization strategies include both short-term and long -term approaches to address multiple issues such as dynamic hydrologic and climatologic forces, inherent bluff instability, worker safety and constructability of shoreline and bluff stabilization measures, and landfill proximity. Five conceptual alternatives have been identified which address the range of protective structures that could be considered on the shoreline, and the waste removal /relocation that would be needed in conjunction with each alternative: L Maintain the seawall in its current location, 2. Remove the seawall, 3. Install limited scour protection at the ends of the seawall, 4. Stabilize the shoreline to the landfill extent, 5. Stabilize the shoreline to the property extent To address funding of corrective actions, the City plans to pursue a combination of appropriate state and federal grants and loans, and to utilize the Solid Waste Utility's bonding capacity for debt financing. Revenue bonds will be paid by revenue from the transfer station. To the extent debt financing is utilized, tipping fees will be increased and customers in the County will be affected. 7.3.4A Recommendations The following recommendations are made for closed landfill oversight in Clallam County: • Consider the range of alternatives necessary to reduce or eliminate the risk of refuse from entering the marine environment and to slow down the rate of bluff erosion at the Port Angeles Landfill. • Maximize the development of appropriate state and federal grant funding to reduce impacts to utility ratepayers when implementing corrective actions at the Port Angeles Landfill. The following recommendations are made for in- county landfilling in Clallam County: • Consider reopening the existing WAC 351- compliant MSW disposal cell at the Port Angeles Landfill necessary to accommodate partial or complete removal of waste from the 304 - compliant cell to reduce or eliminate the risk of refuse from entering the marine environment. 12. COST ASSESSMENT QUESTIONNAIRE Introduction 12.1 Demographics (NA) 12.2 Waste Stream Generation (NA) 12.3A System Component Costs Port Angeles Landfill Stabilization To address corrective actions, the City of Port Angeles has estimated the costs of the Conceptual Alternatives for waste removal and shoreline protection options to range from $6M to $41M, assuming on -site waste relocation. If off -site disposal is required, estimated costs increase to a maximum of $70M. These costs do not reflect the ability to obtain permits, project phases, the longevity of the solution, or the ability to obtain financing. Taking environmental impacts, affordability, and durability into consideration, the most likely alternative at this time involves installing limited scour protection at the ends of the existing seawall, and removing waste to allow an embayment to form at the East 304 Cell. The estimated cost is $24M, to be done in multiple phases. The cost of the initial phase, to be constructed as soon as possible, is estimated at $15M, with subsequent phases to be constructed in 25 and 50 years. Phasing the project facilitates financing the work, and also enables shoreline movement to be monitored and the project design to be adjusted based on the data. This is especially appropriate in view of the uncertainties surrounding estimates of sea level rise and Elwha River sediment over multiple decades. 12.4A Funding Mechanisms Port Angeles Landfill Stabilization To address funding of corrective actions, the City plans to pursue a combination of appropriate state and federal grants and loans, and to utilize the Solid Waste Utility's bonding capacity for debt financing. Revenue bonds will be paid by revenue from the transfer station. To the extent debt financing is utilized, tipping fees will be increased and customers in the County will be affected. As amended, the comprehensive Solid Waste Management Plan Update 2006 is confirmed and ratified. ip ........ O Boring, 0 I Pat tate V+ ell I.,. j Currant Landtill Ha undary ,:;',/ am- ....: Rldtt Removal - &eel 4,,a—r"L'd GravIng Yard Did ■ as Extraction Well $ Monitoring Well — Cell • ' Constru.ttion Debris ; , 1' : 118f3nher Mill _ .., P:t Nepali'', Bourn% n.,' .. 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