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CaliBamboo6675MesaRidgeRd.#100SanDiegoCA92121(888)788-2254Aminimumof120squarefeet(ft2)eachofsolidstrandbambooplankflooringandsheetcorkunderlaymentweresubmittedtothislaboratoryforSoundTransmissionClass(STC)andImpactInsulationClass(IIC)testing.Additionalsampledetailsareasfollows:• Flooring:CaliBambooAntiqueJavaFossilizedWideClickBambooFlooring,5-5/16”Widex9/16”Thickx72-7/8”Long,ModelNumber7004001100

• CorkUnderlayment:GreenClaimed®Premium+CorkUnderlayment,2.5mm,107.25squarefeet(ft2)perroll,ModelNumber1102002300

AtCaliBamboorequest,BenchmarkInternational,LLC(BMI)independentlycommissionedtestingbyalaboratoryaccreditedinaccordancewiththerequirementsdefinedorreferencedinISO/IEC17025:2005GeneralRequirementsforthecompetenceoftestingandcalibrationlaboratoriestoperformthespecifiedtestmethodsasfollows:• SoundTransmissionClass(STC):ASTME90-09,StandardTestMethodforLaboratoryMeasurementofAirborneSoundTransmissionLossofBuildingPartitionsandElements.TestresultswerethenclassifiedinaccordancewithASTME413-10,Classification for Rating Sound Insulation.

• ImpactInsulationClass(IIC):ASTME492-09,StandardTestMethodforLaboratoryMeasurementofImpactSoundTransmissionthroughFloor-CeilingAssembliesUsingtheTappingMachine.TestresultswerethenclassifiedinaccordancewithASTME989-06(Reapproved2012),StandardClassificationforDeterminationofImpactInsulationClass(IIC).

Thesubmittedflooringandunderlaymentsampleswereassembledpermanufacturerinstructionsandtestedtogetherasasystem.Testresults,toincludeadditionaldetailsregardingthetestmethodsusedandtestconditions/parametersapplied,isattachedinAppendixAandAppendixBofthisreport.• AppendixA:SoundTransmissionClass(STC),LaboratoryReportNumber102497488CRT-001c• AppendixB:ImpactInsulationClass(IIC),LaboratoryReportNumber102497488CRT-001d

Testresultsapplyonlytothereferencedflooringandunderlaymentsystemusingthespecifiedtestmethodsandconditionsidentifiedinthetestreport.Testresultsmaynotbeappliedtootherproducttypesorflooring/underlaymentsystemsunlessotherwisespecified.

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ThisreporthasbeenproducedfortheexclusiveuseofCaliBamboo,andmaynotbereproducedexceptinitsentirety,andonlywiththeexpressed,writtenapprovalofBenchmarkInternational(BMI).NooneotherthanBMI’sclientshallbeentitledtorelyuponthisreportortheinformationcontainedherein;anysuchunauthorizedrelianceonoruseofthisreportwillbeatthethirdparty’ssolerisk.Servicesperformedforthisprojecthavebeenconductedwithalevelofcareandskillordinarilyexercisedbymembersoftheprofessioncurrentlypracticinginthisareaundersimilarconditionsandrestraints.Nowarranty,expressedorimplied,ismade.RespectfullySubmitted,

ChrisBattinManagingDirector,CertificationandTestServicesBenchmarkInternational,LLC(BMI)2710West5thAve.Eugene,Oregon97402

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APPENDIXA:SOUNDTRANSMISSIONCLASS(STC)

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APPENDIXB:IMPACTINSULTATIONCLASS(IIC)

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