pcbs in building materials
DESCRIPTION
PCBs in Building Materials. Kim Tisa, PCB Coordinator - US EPA Region 1 Environmental Business Council – Connecticut Chapter March 30, 2011. Formulating PCBs into Aroclors (1016, 1221, 1232, 1242, 1248, 1254, 1260, 1262, 1268). Monsanto was only US producer - PowerPoint PPT PresentationTRANSCRIPT
PCBs in Building MaterialsPCBs in Building Materials
Kim Tisa, PCB Coordinator - US EPA Region 1Kim Tisa, PCB Coordinator - US EPA Region 1 Environmental Business Council – Connecticut ChapterEnvironmental Business Council – Connecticut Chapter
March 30, 2011March 30, 2011
Formulating PCBs into AroclorsFormulating PCBs into Aroclors (1016, 1221, 1232, 1242, 1248, 1254, (1016, 1221, 1232, 1242, 1248, 1254,
1260, 1262, 1268)1260, 1262, 1268) Monsanto was only Monsanto was only
US producer US producer Only about 130 of Only about 130 of
the 209 congeners the 209 congeners were used in were used in commercial commercial formulationsformulations
>50 different >50 different congeners were used congeners were used in an Aroclor mixturein an Aroclor mixture
Range from oily Range from oily liquids to waxy solids liquids to waxy solids at room temperatureat room temperature
Last two digit = % Last two digit = % Chlorine by massChlorine by mass
PCBs Chemical PropertiesPCBs Chemical Properties
– Attractive Properties to IndustryAttractive Properties to IndustryLow flammabilityLow flammabilityFire resistantFire resistantChemical stabilityChemical stabilityElectrical insulating propertiesElectrical insulating propertiesDurability Durability Resistant to degradationResistant to degradationSoftener and plasticizerSoftener and plasticizer
PCBs in Industrial ApplicationsPCBs in Industrial Applications
TransformersTransformers CapacitorsCapacitors Hydraulic fluidsHydraulic fluids Oil-based paintsOil-based paints Fluorescent light Fluorescent light
ballastsballasts Lubricating & cutting Lubricating & cutting
oilsoils Floor finishesFloor finishes Fire retardantsFire retardants
Thermal Insulation Thermal Insulation materials (foam, felt)materials (foam, felt)
Caulking & groutCaulking & grout PVC coatings for PVC coatings for
electrical wire & electrical wire & componentscomponents
Carbonless copy Carbonless copy paperpaper
Inks and dyesInks and dyes Adhesives/masticAdhesives/mastic
U.S. Industrial Use of PCBs U.S. Industrial Use of PCBs
PCB UsePCB Use Pounds (mil)Pounds (mil) % of Total% of Total
CapacitorsCapacitors 630630 50.350.3
TransformersTransformers 335335 26.726.7
Plasticizer usesPlasticizer uses 115115 9.29.2
Hydraulics/lubricantsHydraulics/lubricants 8080 6.46.4
Carbonless copy paperCarbonless copy paper 4545 3.63.6
Heat Transfer fluidsHeat Transfer fluids 2020 1.61.6
Petroleum additivesPetroleum additives 11 0.10.1
Miscellaneous usesMiscellaneous uses 2727 2.22.2
TotalsTotals 1,2531,253 100100
Uses of Aroclor by TypeUses of Aroclor by Type
What are the human health What are the human health effects from PCBs?effects from PCBs?
Acute (short-term) – Irritation/burning of eyes, face, Acute (short-term) – Irritation/burning of eyes, face, and chloracneand chloracne
Chronic (long-term) – Liver disorders, reproductive Chronic (long-term) – Liver disorders, reproductive effects, developmental effects, and probably cancereffects, developmental effects, and probably cancer
PCBs also have numerous well-documented health PCBs also have numerous well-documented health effects, including cancer, for animals. effects, including cancer, for animals.
EPA - PCBs a probable human carcinogenEPA - PCBs a probable human carcinogen
Why the Concern - RegulatoryWhy the Concern - Regulatory
Courtesy of Weston & Sampson
CURRENT REGULATIONSCURRENT REGULATIONS
Section 6(e) of the Toxic Substances Control Act Section 6(e) of the Toxic Substances Control Act of 1976 (TSCA) generally bans the manufacture, of 1976 (TSCA) generally bans the manufacture, processing, distribution in commerce, and use ofprocessing, distribution in commerce, and use of PCBs after 1978, but provides for exceptions PCBs after 1978, but provides for exceptions based on an EPA finding of “no unreasonablebased on an EPA finding of “no unreasonable risk of injury to health or the environment.” risk of injury to health or the environment.”
Most of the exceptions take the form of Most of the exceptions take the form of authorizations, which include conditions, suchauthorizations, which include conditions, such as location restrictions, repair restrictions, andas location restrictions, repair restrictions, and concentration limits.concentration limits.
40 CFR Part 76140 CFR Part 761
REGULATORY CONSIDERATIONSREGULATORY CONSIDERATIONS
PCB regulations include owners and/or operators PCB regulations include owners and/or operators of PCB-contaminated property where the PCB of PCB-contaminated property where the PCB contamination exceeds allowable concentrations contamination exceeds allowable concentrations under the regulationsunder the regulations
TSCA authority has not been delegated to any of TSCA authority has not been delegated to any of the states, thus both EPA and state regulations the states, thus both EPA and state regulations will applywill apply
IssuesIssues
The use of PCBs in building products is prohibited under TSCA. The use of PCBs in building products is prohibited under TSCA.
Manufactured products containing PCBs have been found in Manufactured products containing PCBs have been found in many buildings and structuresmany buildings and structures
Caulk typically contains PCBs at very high levels - %Caulk typically contains PCBs at very high levels - %
The PCBs in the caulk migrate to a limited extent to The PCBs in the caulk migrate to a limited extent to surrounding materials (air, soil, masonry).surrounding materials (air, soil, masonry).
Typical renovation procedures can increase exposures to Typical renovation procedures can increase exposures to workers and building residents, including children.workers and building residents, including children.
Renovation/DemolitionRenovation/DemolitionConsiderationsConsiderations
Do I need to look for PCBsDo I need to look for PCBs
If I find PCBs, is my site regulated If I find PCBs, is my site regulated under TSCAunder TSCA
What are my cleanup optionsWhat are my cleanup options
PCBs in Building MaterialsPCBs in Building Materials
Bulk Product Waste (761.62)Bulk Product Waste (761.62)examples: caulk, applied dried paints, varnishes, other examples: caulk, applied dried paints, varnishes, other similar coatings or sealants, Galbestossimilar coatings or sealants, Galbestos
Performance-based disposalPerformance-based disposal
Disposal in Solid Waste LandfillDisposal in Solid Waste Landfill
Risk-based Disposal ApprovalRisk-based Disposal Approval
Daily Cover/RoadbedDaily Cover/Roadbed
Source RemovalSource RemovalPCBPCB Bulk Product WasteBulk Product Waste
Caulk removalCaulk removal– Strip outStrip out
Paint removalPaint removal– AbrasivesAbrasives– ChemicalsChemicals– HydroblastHydroblast
Management in PlaceManagement in Place
Not acceptable for Not acceptable for PCBPCB bulk product bulk product waste waste (§ 761.62)(§ 761.62)
May be acceptable for surrounding May be acceptable for surrounding materials (§ 761.61)materials (§ 761.61)
Possible Possible short-term interim measureshort-term interim measure– Consultation with EPAConsultation with EPA– Sampling may be requiredSampling may be required
PCBPCB Remediation WasteRemediation WasteOptionsOptions
Self-Implementing Option– § 761.61(a)
Performance-Based Option- § 761.61(b)
Risk-Based Option - § 761.61(c)
Adjacent Surfaces Adjacent Surfaces PCB Remediation WastePCB Remediation Waste
Grind/cut out areas Grind/cut out areas of contamination of contamination beyond “source beyond “source material”material”
EncapsulationEncapsulation
Clean non-porousClean non-porous
CTDEP Caulk GuidanceCTDEP Caulk Guidance
Caulk Guidance, cont’d.Caulk Guidance, cont’d.
Excluded PCB ProductsExcluded PCB Products
Must meet all criteria under § 761.3Must meet all criteria under § 761.3
May be left in place without further May be left in place without further restrictions/requirementsrestrictions/requirements
ANALYTICAL CONSIDERATIONS ANALYTICAL CONSIDERATIONS AND PITFALLSAND PITFALLS
1) Analytical and extraction requirements
2) Expected
concentration range
3) Required reporting limits
4) Special Instructions
Chain Of CustodyChain Of Custody
Concentration RangeRequired Detection
Limits
Lab Instructions
Methods
Quality Assurance/ Quality ControlQuality Assurance/ Quality Control
A properly planned analytical program with A properly planned analytical program with adequate QA/QC samples is criticaladequate QA/QC samples is critical
QA/QC Program should include:QA/QC Program should include: Field and Lab Duplicates Field and Lab Duplicates Method blanksMethod blanks Temperature blanksTemperature blanks Field Blanks and MS/MSDs Field Blanks and MS/MSDs Laboratory PEs – similar matricesLaboratory PEs – similar matrices
COMMUNICATION ISSUESCOMMUNICATION ISSUES
Project RequirementsProject Requirements
– MethodsMethods
• Sample extraction methods – Soxhlet extraction preferredSample extraction methods – Soxhlet extraction preferred• Extraction by sonication not preferred Extraction by sonication not preferred
– Inefficient, low PCB concentrationsInefficient, low PCB concentrations– Not applicable/appropriate to all matricesNot applicable/appropriate to all matrices– Not allowed under many state QA programsNot allowed under many state QA programs
• Alternative techniques require correlation study Alternative techniques require correlation study – – – Subpart QSubpart Q
-- Reporting limitsReporting limits
EPA Activities to DateEPA Activities to Date September 2009 (caulk guidance)
(fact sheets, Q’s and A’s, and a Schools Information Kit)
Steps to Safe Renovation and Abatement of Buildings that have PCB-Containing Caulk
Developed public health levels for PCBs in indoor air for schools
Conducting research on mitigation and exposures assessment on PCB sources in buildings (ORD)
ANPR - use and distribution in commerce of certain classes of PCBs and PCB items and certain other areas of the PCB regulations under the Toxic Substances Control Act
December 2010 (ballast guidance)
http://www.epa.gov/epawaste/hazard/tsd/pcbs
EPA RecommendationsEPA Recommendations
For buildings built between 1950 and 1978For buildings built between 1950 and 1978
– Minimize exposure (e.g. ventilation, cleaning)Minimize exposure (e.g. ventilation, cleaning)– Take care when renovatingTake care when renovating– Take care when abatingTake care when abating
If you think you may have a problemIf you think you may have a problem
– Test for elevated air levelsTest for elevated air levels– Test for source of air contaminationTest for source of air contamination
Evaluate duct systemsEvaluate duct systems Sample deteriorating caulkSample deteriorating caulk
Renovation and Abatement Renovation and Abatement BrochureBrochure
Information for contractors and building Information for contractors and building owners for characterizing, remediating, and owners for characterizing, remediating, and disposing of PCB-contaminated building disposing of PCB-contaminated building materials (e.g., masonry, wood, or brick), materials (e.g., masonry, wood, or brick), soils or sand, and caulk when conducting a soils or sand, and caulk when conducting a renovation/repair or abatement projectrenovation/repair or abatement project
Contacts and PCB InfoContacts and PCB Info Kimberly Tisa – EPA Kimberly Tisa – EPA
617-918-1527617-918-1527 [email protected]
Gary Trombly – CTDEP Gary Trombly – CTDEP 860-424-3486860-424-3486
Caulk Hotline: 888-835-5372Caulk Hotline: 888-835-5372
http://www.epa.gov/pcb