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1、1Whats New with In Situ Chemical OxidationWelcome Thanks for joining us. ITRCs Internet-based Training ProgramThis training is co-sponsored by the EPA Office of Superfund Remediation and Technology InnovationITRC Technical and Regulatory Guidance: In Situ Chemical Oxidation of Contaminated Soil and
2、Groundwater Second Edition2ITRC (www.itrcweb.org) Shaping the Future of Regulatory AcceptanceuNetwork State regulators Federal government Industry Consultants Academia Community stakeholdersuDocuments Technical and regulatory guidance documents Technology overviews Case studiesuTraining Internet-bas
3、ed ClassroomITRC State MembersFederal PartnersHost OrganizationDOEDODEPAITRC Member State3 ITRC Course Topics Planned for 2006uCharacterization, Design, Construction and Monitoring of Bioreactor LandfillsuDirect-Push Wells for Long-term MonitoringuEnding Post Closure Care at LandfillsuPlanning and P
4、romoting of Ecological Re-use of Remediated SitesuRads Real-time Data CollectionuRemediation Process Optimization Advanced TraininguMore in development.uAlternative Landfill CoversuConstructed Treatment WetlandsuEnvironmental Management at Operational Outdoor Small Arms RangesuDNAPL Performance Asse
5、ssmentuMitigation WetlandsuPerchlorate Overview uPermeable Reactive Barriers: Lessons Learn and New DirectionuRadiation Risk AssessmentuRadiation Site CleanupuRemediation Process OptimizationuSite Investigation and Remediation for Munitions Response ProjectsuTriad ApproachuWhats New With In Situ Che
6、mical Oxidation New in 2006Popular courses from 2005Training dates/details at www.itrcweb.org Training archives at http:/cluin.org/live/archive.cfm4Whats New with In Situ Chemical OxidationPresentation OverviewIntroduction and regulatory issuesISCO technologyQuestions and answersDesign consideration
7、sApplication considerationsProcess monitoringRegulatory evaluationLinks to additional resourcesYour feedbackQuestions and answersLogistical RemindersPhone line audience Keep phone on mute *6 to mute, *7 to un-mute to ask question during designated periods Do NOT put call on holdSimulcast audience Us
8、e at the top of each slide to submit questionsCourse time = 2 hours5 Meet the ITRC InstructorsIan Osgerby USACE-New England District Concord, MA (978) 318-8631 ian.t.osgerbyusace.army.milDoug Carvel MECX, LLC Bellaire, TX (713) 585-7003 Jeff Lockwood Florida DEP Tallahassee, FL (850) 245-7504 jeff.l
9、ockwooddep.state.fl.us6 What you will learnuWhat regulators are looking for in ISCO applicationsuUnderstand how ISCO works so you can select the right oxidantuImportance of a thorough design to ensure successful implementationuImportance of health and safetyuWhat, where, and why to monitoruRegulator
10、y evaluation goals 7Section I: What is ISCO and Regulatory IssuesuDefining in situ chemical oxidationuGeneral applicabilityuRegulatory review8 What is In Situ Chemical Oxidation?uDefinition: A technique whereby an oxidant is introduced into the subsurface to chemically oxidize organic contaminants c
11、hanging them to harmless substances Rapidly emerging technology Still subject of academic research as well as applied routinely as a commercialized process Several options for selection of oxidant chemicals Requires good understanding of contaminant and site characteristics to ensure effective treat
12、ment9Advantages and Disadvantages of ISCOuAdvantages Fast treatment (weeks to months) Temporary facilities Treatment to low levels Effective on some hard -to-treat compoundsuDisadvantages Requires earlier spending commitment Involves handling powerful oxidants, and carries special safety requirement
13、s10 General Applicability of ISCOuISCO has been successfully used in every stateuAddresses organic contaminants Including hydrocarbons, pesticides, and PCBsuAddresses contaminant phases High soil/groundwater concentrationStandard application Low soil/groundwater concentrationPossible, but may not be
14、 cost-effective Mobile NAPL (free product)Applicable, but requires more knowledge/control Residual NAPL (sorbed)Applicable, but requires a high oxidant dose11 Regulatory ApprovaluHow it used to be Inconsistent, bureaucratic permitting Resource Conservation and Recovery Act (RCRA) often caused delays
15、 Fear of liability on the part of contractors, stakeholders, etc. uToday Underground Injection Control (UIC) program To protect drinking water Resource Conservation and Recovery Act (RCRA) Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Emergency Planning and Community
16、Right to Know Act (EPCRA)12 State Regulatory RequirementsuStates that require an Underground Injection Control (UIC) permit/registration include AL, CT, DE, FL, GA, KS, LA, MD, MO, NE, NV, NH, NJ, NM, NC, OK, OR, RI, SC, WV, WYuAll other states require other approvals See Table 4-1: Regulatory permitting requirements for oxidant inject
