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WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS P RESENTED AT : TBAEP A PRIL L UNCHEON April.

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Presentation on theme: "WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS P RESENTED AT : TBAEP A PRIL L UNCHEON April."— Presentation transcript:

1 WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS P RESENTED AT : TBAEP A PRIL L UNCHEON April 17, 2013

2 P RESENTATION O VERVIEW Introduction Drivers Project Considerations Relevant Project 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 2 4/17/2013

3 I NTRODUCTIONS Sean Rome – Vice President, Energy Waste Program Responsible for Tetra Techs Energy Waste Program In 2012, managed >100 related projects at ~$300M Industry Subject matter Expert and serves on numerous technical advisory panels for EPRI, USWAG, etc. 1/16/20133 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 3

4 WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY D RIVERS

5 M ARKET D RIVERS Coal = ~$2.472 per Million Metric British Thermal Units (mmbtu) NG = ~$2.343 per mmbtu Coal = ~$2.472 per Million Metric British Thermal Units (mmbtu) NG = ~$2.343 per mmbtu 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 54/17/2013

6 R EGULATORY D RIVERS Federal Regulatory Foundations for Waste Disposal: Solid Waste Disposal Act (SWDA) in 1965 Resource Conservation and Recovery Act (RCRA) in 1976 Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) in 1980 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 64/17/2013

7 P ENDING R EGULATORY D RIVERS Proposed Federal Regulations - The Game Changers: USEPA CCR Rule* (Subtitle D, D 1 or Subtitle C) HR 2273 / 3409 SB 1571 / 3512* *Active Drivers 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 7

8 H IGHLIGHTS OF S UBTITLE D O PTION Effective Date 6 months Enforcements by State Self-Implementing Corrective Actions No Permit Required No Liner Required for Existing Landfills Groundwater Monitoring Requirements Liner and Groundwater Monitoring Requirements for New Landfills Closure and Post-Closure Care Requirements 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 8 4/17/2013

9 Effective Date 1 year State and Federal Enforcements Corrective Actions Monitored by States and EPA Requires Permits Issued by States No Liner Requirements for Existing Landfills Groundwater Monitoring Requirements Liner and Groundwater Monitoring Requirements for New Landfills Closure and Post-Closure Care Requirements 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 9 H IGHLIGHTS OF S UBTITLE C O PTION 4/17/2013

10 More Stringent Requirements on Design of Bottom Liner and Leachate Collection Systems. Tighter Provisions on Groundwater Quality Monitoring. More Extensive Material Characterization and Leachate Studies. A NTICIPATED P ROVISIONS OF F EDERAL CCR R ULE 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 10 4/17/2013

11 WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY P ROJECT C ONSIDERATIONS

12 Location Restrictions Design and Operating Criteria Groundwater and Gas Monitoring Requirements Corrective Action Requirements Financial Assurance Requirements Closure and Post-Closure Care Requirements 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 12 4/17/2013

13 D ESIGN R EQUIREMENTS : B OTTOM L INER Composite Liner System Geomembrane Liner 2 Feet of Compacted Soil Liner with a Hydraulic Conductivity of 1x10 -7 cm/sec Leachate Collection System 12 Inches of Leachate Head on Top of Bottom Liner System 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 13 Subtitle D Double Liner System with Two Components Top Component: Geomembrane Liner Bottom Component: Geomembrane Liner on Top of 3 Feet of Compacted Soil Liner with a Hydraulic Conductivity of 1x10 - 7 cm/sec Leachate Collection System above Top Component Leak Detection System between components Subtitle C 4/17/2013

14 C OMPOSITE L INER S YSTEM Compacted Soil Liner (1 to 3 thick depending on saturated hydraulic conductivity and design hydraulic head above liner system) 60-mil HDPE Geomembrane Geocomposite 2-foot Drainage Sand/Protective Soil Layer Gravel Drain Leachate Collection Pipe Leachate Collection System 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 14 4/17/2013

15 D OUBLE G EOMEMBRANE L INER S YSTEM GCL or Low Permeability Sub-base 60-mil Secondary HDPE Geomembrane Leak Detection System 60-mil Primary HDPE Geomembrane Geocomposite 2-foot Drainage Sand/Protective Soil Layer Gravel Drain Leachate Collection Pipe Leachate Collection System 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 15 4/17/2013

16 D ESIGN R EQUIREMENTS : F INAL C OVER Infiltration Barrier: 18 Inches of Soils with a Hydraulic Conductivity of 1x10 -5 cm/sec Erosion Layer: 6 inches of Soils to Support Vegetation Cover 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 16 Subtitle DSubtitle C 24 Inches of a Topsoil and Drainage Layer 24 Inches of a Compacted Soil Liner with a Hydraulic Conductivity of 1x10 -7 cm/sec Geomembrane Liner on top 4/17/2013

17 I NVERTED C OMPOSITE L INER S YSTEM FOR P HOSPHOGYPSUM S TACKS Compacted Gypsum (2 thick) 60-mil HDPE Geomembrane Gravel Drain Drainage Pipe 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 17 4/17/2013

18 Coal Ash Landfill Relatively homogenous/inert industrial waste stream Waste is not biodegradable; no landfill gas; minimal settlement Waste is sometimes stabilized or conditioned No daily or intermediate cover required Does not attract vectors Dense waste compacted with vibratory compactors Leachate contains primarily metals and inorganics MSW Landfill Heterogeneous residential/ commercial waste stream Waste decomposes, settles and produces landfill gas. Waste is usually landfilled as received Requires daily and intermediate soil or alternative cover Attracts birds, rodents, etc. Compaction with specialized steel- wheeled compactors Leachate contains a wide variety of potential contaminants, including organics 4/24/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 18 D IFFERENCES BETWEEN C OAL A SH AND MSW L ANDFILLS 4/17/2013

19 WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY C ASE H ISTORY : P ERMIT, D ESIGN AND C ONSTRUCTION S UBTITLE D A SH L ANDFILL C ONFIDENTIAL U TILITY C LIENT

20 P ROJECT O VERVIEW Design/Permit: 90-acre RCRA Subtitle D, Double lined, 3 cell landfill with leachate collection system (LCS) with leak detection system (LDS); 22-acre stormwater pond. Construct: Cell 1 (~30 acres), 22-acre SW Pond and associated MEP Systems and; 2-acre decant cell 1/16/2013 Q UALIFICATIONS FOR P ERMITTING, D ESIGN, AND C ONSTRUCTION S ERVICES 20 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 4/17/2013

21 P ROJECT O BJECTIVES Expedite and Satisfy Regulatory Permitting Requirements Optimize Air Space ($$$) Meet Compressed Permitting and Construction Schedules Conduct all work safely Minimum or No Impact to Plant Operations High Quality End Product Protect Clients Investment without Cutting Corners No Change Orders (Firm Fixed Price) 1/16/2013 Q UALIFICATIONS FOR P ERMITTING, D ESIGN, AND C ONSTRUCTION S ERVICES 21 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 4/17/2013

22 1/16/2013Qualifications for Permitting, Design, and Construction Services22

23 Bedrock Clay Sand Existing Landfill Sand Proposed Extension $$$ 1/16/201323 Max Airspace - $$$

24 C ONSTRUCTION S COPE OF S ERVICES Clear and Grub (including burning of vegetation onsite) Top soil stripping/stockpiling – 40,000cy Stormwater Pond (22 acres) – earthwork – cut 400,000cy Pond drainage structures with 36 HDPE double-barrel pipes Landfill expansion (30 acres) – earthwork and culverts – Fill 400,000cy Clay placement and compaction – 24,500cy Piggyback tie-in at existing slope Leachate collection system (including laterals, sumps, collection, riser, and sumps) Top soil and permanent erosion 1/16/2013 Q UALIFICATIONS FOR P ERMITTING, D ESIGN, AND C ONSTRUCTION S ERVICES 24 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 4/17/2013

25 C ONSTRUCTION H IGHLIGHTS Cut from Pond and fill/compact cell subgrade Protective sand layer (24) – landfill cell Leachate pads and forcemain (including cleanout and video inspection) – 6,000lf Decanting/General storage cell (2 acres) – earthwork Construct and fine grade perimeter berms Place, grade, compact, and finish clay subbase Install 6, 000 lf force main Substantial completion – November 2012 Total SAFE hours worked onsite incident free – >130,000 hrs (avg. crew 24 workers/over 9 months) Successful Work led to new projects (D/B 10 Acre Ash Pond and 2,800lf S/B Cutoff Wall. 1/16/2013 Q UALIFICATIONS FOR P ERMITTING, D ESIGN, AND C ONSTRUCTION S ERVICES 25 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 4/17/2013

26 WATERNATURAL RESOURCESENVIRONMENTINFRASTRUCTUREENERGY P ROJECT T IMELINE

27 N OTICE TO P ROCEED : M AY 2011 1/16/2013Qualifications for Permitting, Design, and Construction Services27

28 F IELD E XPLORATION : M AY – J ULY 2011 1/16/2013Qualifications for Permitting, Design, and Construction Services P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS 4/17/201328

29 Design Phase 1/16/201329 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS Basic Design Phase: –June to December 2011 Detailed Design Phase: –August – December 2011

30 R EGULATORY A PPROVAL : J ANUARY 2012 1/16/2013Qualifications for Permitting, Design, and Construction Services3030 4/17/2013 P ROJECT C ONSIDERATIONS FOR N EW C OAL A SH L ANDFILLS

31 February 2012 1/16/2013Qualifications for Permitting, Design, and Construction Services31 C ONSTRUCTION S TART D ATE : J ANUARY 2012

32 April 2012 1/16/2013Qualifications for Permitting, Design, and Construction Services32 M ARCH 2012

33 1/16/2013Qualifications for Permitting, Design, and Construction Services33 M AY 2012

34 1/16/2013Qualifications for Permitting, Design, and Construction Services34 A UGUST 2012

35 October 2012 1/16/2013Qualifications for Permitting, Design, and Construction Services35 O CTOBER 2012

36 Questions?


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