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SHA employs a multi-disciplinary approach to meet the needs of our solid waste clients. Solid waste related services provided to industrial and municipal clients include:
- Hydrogeologic and Geotechnical Studies
- Groundwater Monitoring Programs
- Landfill Design and Permitting
- Landfill Leachate Pump Station, Storage, and Recirculation Design
- Landfill Gas Extraction and Treatment System Design
- Stormwater Management and Erosion and Sediment Control System Design and Permitting
- Supervisory Control and Data Acquisition (SCADA) System Design and Integration
- Air Emission Permitting
- Construction Monitoring
- Geosynthetics Quality Assurance Programs
Our multi-disciplinary team of civil and geotechnical engineers and hydrogeologists has a proven track record designing, permitting, and providing construction quality assurance services for projects ranging from capping small municipal landfills to permitting new and expansions to Subtitle D-compliant landfills using the latest design technologies. We work with our clients to develop innovative means to optimize disposal capacity using mechanically stabilized earth (MSE) berms, leachate recirculation and bioreactor technology, and alternative daily and final covers. Using computer-aided drafting and design software, we are able to efficiently provide airspace capacity estimates, develop and model landfill development sequence plans, and provide construction layout information. We can also integrate with GPS-based grading systems used by contractors on grading equipment, and by landfill operators on compactors to monitor filling and compaction.
We also design and install SCADA systems to monitor and control removal of leachate from landfills, storage and transfer of leachate, extraction and treatment of landfill gas, and monitor meteorological conditions. The systems not only provide stand-alone distributed control, but also include datalogging capability and remote monitoring and reporting. These features allow operators to automatically collect data for regulatory or internal reporting, and to be informed about operating conditions 24 hours a day.
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New England Waste Services of Vermont, Inc. (NEWSVT)
Coventry, Vermont
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 SHA has been providing design, permitting and construction phase engineering services at the NEWSVT facility since 1994. We were responsible for preparing the design and permit applications for the Phase III and Phase IV expansions, and the Phase V expansion that is currently under regulatory review. SHA's design incorporated an underdrain system allowing base grades to be established as much as 50 feet below predevelopment groundwater levels. Prior to SHA's involvement at the site, the entire base area beneath Phases I and II had been excavated to allow for the installation of the underdrain system. Following installation, it was necessary to replace 6 feet of soil material in compacted lifts across the base of the landfill to establish the vertical separation between the liner system and the groundwater table as required by the Vermont Solid Waste Management rules (VSWMRs). For the Phase III and IV expansions, SHA was able to demonstrate that it was not necessary to over excavate the entire base area of the landfill to install an effective underdrain groundwater collection system. Furthermore, we incorporated directional drilling techniques into the design for the installation of the underdrain discharge pipe eliminating the need for a cut and cover excavation. These changes resulted in significant cost savings for our client.
In addition to solid waste facility certification applications, we have prepared Act 250 Land Use permit applications and represented our clients throughout the solid waste and Act 250 hearing process. For both expansions, variances were required from the regulations, and SHA assisted with the preparation of the variance applications and testified at hearings before the Solid Waste and Air Variance Board.
SHA has also provided resident engineering and construction quality assurance (CQA) services for the various phases of construction at the facility. These services have involved contract administration, as well as monitoring the geotechnical, geosynthetic and mechanical aspects of construction for conformance with the approved plans and specifications. For these projects we prepared Record Drawings and developed CQA reports documenting our observations during construction.
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Turnkey Landfills Of Rochester I, II and III
Waste Management of New Hampshire, Inc.
Rochester, New Hampshire
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 SHA principals and technical staff have been responsible for the hydrogeologic consulting and landfill permitting services provided relative to the three landfill units at the Turnkey facility for over 20 years. For the 46-acre TLR-I, SHA staff prepared construction plans and specifications incorporating both compacted clay and composite (compacted clay overlain by 60-mil HDPE) liner systems. Our staff also provided CQA services during liner construction and capping of the facility. We evaluated clay borrow sources and performed sampling and testing during construction of the clay cap for conformance with the project specifications.
SHA staff also had primary responsibility for the hydrogeologic assessment and design in support of the permit application for the 50-acre dual-lined TLR-II Landfill. Because a large portion of the footprint of the landfill is located over soft sensitive marine clays, extensive settlement and stability evaluations were performed. SHA staff had primary responsibility for the CQA services provided during initial construction of each of the four phases of facility.
The TLR-III facility is a 100-acre landfill unit located south of, and partially atop of, TLR-I. SHA staff was responsible for hydrogeologic site characterization and preparation of the solid waste permit application documents for the facility, which receives more than 1,000,000 tons of waste per year. This facility was the first to be permitted in New Hampshire following promulgation of Subtitle D and a seismic assessment was considered in the design. Based on stability analyses, a textured 60-mil HDPE liner with a double-sided drainage geocomposite was incorporated in the design to improve overall stability. The permit application also included development of landfill operating and closure plans. The operating plan addressed leachate management, general methods of fill segregation and cover placement. The final cap design includes textured geomembrane in conjunction with drainage geocomposite for stability. SHA developed a comprehensive stormwater management system design that includes a number of detention and infiltration basins to limit off-site discharge and contain sediment on-site. SHA developed construction plans for Phases 6 through 8 of the facility and provided CQA services during installation of landfill gas and leachate collection system modifications in that portion of TLR-I located beneath the TLR-III liner system. Recently, we prepared solid waste permit application documents for a 70 acre expansion of this facility.
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North Country Environmental Services, Inc.
Bethlehem, New Hampshire
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 SHA has been providing comprehensive hydrogeologic assessment, landfill design, and solid waste and air permitting services for this double-lined landfill facility. We prepared a permit modification necessary for the development of Stage II, which had originally been permitted prior to the promulgation of the Federal Subtitle D regulations. We modified the Design and Operating Plan as required and then prepared the required demonstration that the design satisfied the federal and state requirements.
We prepared the hydrogeologic reports, design plans and permit applications for Stages III and IV, two lateral expansions of the facility that provide more than 2,500,000 cubic yards of additional capacity. We also prepared an application for a permit modification that allowed the use of a combination of soil and mechanically stabilized earth berms to increase capacity of the facility without a lateral expansion.
In addition to permitting new capacity, SHA has prepared landfill gas extraction system plans for the facility as well as construction plans for closure of portions of the facility filled to final grades. We have provided Resident Engineering and CQA services for construction of new landfill phases, the final cover system, and the landfill gas extraction system.
SHA has performed water quality monitoring and associated reporting for this facility since 1993. In addition, we have prepared several applications for permit modifications including a modification to allow stockpiling of construction and demolition debris for subsequent processing with the processed material used as an Alternate Daily Cover.
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Hyland Facility Associates Landfill
Angelica, New York
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SHA developed the solid waste permit application documents for a 48 acre expansion to this double-lined MSW landfill. The proposed expansion will provide an additional 11,200,000 cubic yards of waste disposal capacity, which includes an underdrain system to suppress groundwater levels. SHA developed interim grading plans and evaluated site stability and settlement for a variety of conditions. The extensive excavation required for the underdrain will provide excess soil material that will subsequently be used as cover material and for construction. SHA developed stockpile management plans to manage the excess soils created during construction. For this facility, SHA also developed landfill gas extraction system design plans, conducted air emissions modeling and developed the air permitting components of the application. We also provided CQA services during installation of landfill gas extraction system components.
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Confidential Client
Vermont
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SHA provides landfill consulting, design, and permitting services to an industrial client in Vermont. For this project, SHA evaluated a greenfield site for potential use as a solid waste management facility, prepared certification applications for existing facilities, evaluated the stability of impounded industrial byproducts, designed stormwater management features, and prepared grading plans for a proposed plant expansion.
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New England Waste Services of ME, Inc. (NEWSME)
Hampden and West Old Town, Maine
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 SHA has been NEWSME's landfill gas consultant for the Pine Tree Landfill since 2001 and the West Old Town Landfill since 2003. At each of these facilities, SHA has worked with NEWSME and their landfill consultant of record to design, permit, and construct landfill gas extraction systems. At the Pine Tree Landfill, SHA is working to optimize landfill gas extraction from the lined facilities to control odors and fuel a proposed landfill gas-to-energy facility.
At the West Old Town Landfill, SHA prepared the landfill gas extraction system master plan along with the design and permit documents for the facility's landfill gas system. SHA is preparing a sequential construction plan for the installation of the landfill gas extraction system during operations as well as an Operations and Maintenance Manual.
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Landfill Expansion and Closure Design and Permitting
New England and New York
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 SHA has a broad range of experience in the northeastern United States designing and permitting landfill expansions and closures. Senior partners in the firm were instrumental in the design and permitting of a 100-acre landfill, which involved not only providing phased grading development plans, but also included design of the leachate and landfill gas handling infrastructure, as well as providing a piggyback fill over an existing closed, clay capped facility.
SHA has provided design and permitting services at various facilities ranging from a 1-acre municipal landfill soil cap closure and 70-acre expansion in northern New England, to a 48-acre Subtitle D landfill expansion in western New York State. Many of the projects have included design of the leachate and landfill gas handling systems, including design of Supervisory Data Acquisition and Control (SCADA) systems.
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Piggyback Landfill Expansion
New England
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 The project involved permitting the construction plans for a 16.5-acre piggyback landfill expansion. The existing landfill gas wells and infrastructure in the portion of the landfill to be covered with the expansion had to be modified to provide the ability to continue to extract landfill gas from the older facility. SHA designed a series of gas extraction trenches that were constructed beneath the new liner system to extract gas from the existing wells, as well as from beneath the new liner system. The facility was required to monitor settlement as part of the permit conditions. SHA designed an innovative system to use available technology to monitor the settlement of the liner system between the existing facility and the new expansion.
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Landfill Gas Extraction and Treatment System Design
New England
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 SHA designed a 500 cubic feet per minute gas extraction and transmission system to address odor control concerns. The system was installed in an unlined landfill, and includes 5 drilled gas extraction wells, 6 connections to an existing subliner vent system beneath a piggybacked landfill expansion, and gas extraction from a perimeter collection drain system. Condensate is removed from the gas in a below-grade condensate knockout, and at a skid-mounted knockout, and the gas is burned at a utility flare. SHA also designed the control system that automatically operates the equipment, records the operating data, and provides remote notification of alarm conditions.
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Leachate Consolidation System
Solid Waste Disposal Facility - New England
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SHA was commissioned to design a system to consolidate the leachate at a central location to simplify the transfer of leachate into tank trucks for off-site disposal. SHA included batch controllers in the design to provide the ability to blend leachate from the various sources in proportions necessary to keep up with variable leachate production from each location. The system includes 18 discrete inputs, 14 analog inputs, and 22 discrete outputs that monitor and control 8 electric submersible pumps, 7 electromagnetic flow meters, liquid levels in 7 USTs, the batch controllers, and overfill protection for the tank truck. Datalogging and remote access to monitoring and control functions was included in the control system.
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