DOES DIGGING UP YOUR LANDFILL MAKE SENSE? Wyoming Solid Waste & - PowerPoint PPT Presentation

DOES DIGGING UP YOUR LANDFILL MAKE SENSE? Wyoming Solid Waste & Recycling Association Casper, Wyoming August 22, 2018 Ken Schreuder, P.E., P.G.

Ken Schreuder, P.E., P.G . Senior Engineer/Geologist Senior Engineer/Geologist Trihydro Corporation kschreuder@trihydro.com

Overview Cost & Ranking Landfill Closure Options Project Example Lessons Learned Questions Feasibility Study asibility Study

Landfill Closure Options 1. 1. Close in place (cap) Close in place (cap) 2. 2. Close on-sit Close on-site in ne in new landf w landfill (liner & ll (liner & cap) cap) 3. 3. Clean closure (dig & Clean closure (dig & haul) haul)

Project Example  Sit Site se settin tting  Other considerations Other considerations  Regulat gulatory options options

Feasibility Study  Preliminar Preliminary re y revie view of of  Feasibility Crit asibility Criteria eria hydr drogeologic conditions ogeologic conditions Im Implementability plementability   Me Methodology f thodology for e r evaluating aluating Reduction o Re of Risk  alternativ alt rnatives es Short-Term Shor rm  Ef Effectiv ctiven eness ess Prepared prelimin Prepa ed preliminary cost y cost  estimates estimat Long- Long-Term R erm Reliability liability  Identified adv Identi fied advantages & ages &  Cost Cost  disadv disadvantages antages Regulat gulatory Suppor Support  Ranked f Rank ed feasibility crit asibility criteria ria  to c to compare alte ternatives

Alternatives and Cost

10 Alternatives and Ranking

Lessons Learned  Charact Characterize sit ze site Delineat Delineate aerial & e aerial &  ve vertical ex exte tent Test w st wast ste/soil e/soil 

Lessons Learned  Estimat Estimate w wast ste/soil e/soil ratios ratios Dif Difficult t icult to  segregat segregate e wast ste/co e/cover soil r soil Im Impract practical t cal to w work  ar around trench ound trench walls lls

Lessons Learned  Identify back Identify back-hall -hall borr borrow sour source ce  Plan f Plan for contingencies r contingencies Field screening Field screening  Lab testi Lab t sting  St Stori oring, hauling, & g, hauling, &  disposal (asbest disposal (asbestos, s, liq liquids, HW ids, HW, NORM) , NORM)

Questions? WHA WHAT WHY WHY WHERE WHERE WHEN WHEN WHO WHO HO HOW