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US Ecology Holdings, Inc. – ‘10-K’ for 12/31/14 – ‘EX-101.SCH’

On:  Monday, 3/2/15, at 1:39pm ET   ·   For:  12/31/14   ·   Accession #:  1047469-15-1480   ·   File #:  0-11688

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/02/15  US Ecology Holdings, Inc.         10-K       12/31/14   93:17M                                    Toppan Merrill-FA

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.18M 
 3: EX-21       Subsidiaries List                                   HTML     31K 
 4: EX-23.1     Consent of Experts or Counsel                       HTML     25K 
 2: EX-12.1     Statement re: Computation of Ratios                 HTML     50K 
 5: EX-31.1     Certification -- §302 - SOA'02                      HTML     29K 
 6: EX-31.2     Certification -- §302 - SOA'02                      HTML     29K 
 7: EX-32.1     Certification -- §906 - SOA'02                      HTML     25K 
 8: EX-32.2     Certification -- §906 - SOA'02                      HTML     25K 
64: R1          Document and Entity Information                     HTML     53K 
51: R2          Consolidated Balance Sheets                         HTML    158K 
62: R3          Consolidated Balance Sheets (Parenthetical)         HTML     35K 
66: R4          Consolidated Statements of Operations               HTML     92K 
85: R5          Consolidated Statements of Comprehensive Income     HTML     42K 
53: R6          Consolidated Statements of Comprehensive Income     HTML     27K 
                (Parenthetical)                                                  
61: R7          Consolidated Statements of Cash Flows               HTML    156K 
46: R8          Consolidated Statements of Cash Flows               HTML     26K 
                (Parenthetical)                                                  
36: R9          Consolidated Statements of Stockholders' Equity     HTML    109K 
86: R10         Consolidated Statements of Stockholders' Equity     HTML     27K 
                (Parenthetical)                                                  
68: R11         Description of Business                             HTML     31K 
67: R12         Summary of Significant Accounting Policies          HTML     65K 
73: R13         Use of Estimates                                    HTML     36K 
74: R14         Business Combinations                               HTML    144K 
71: R15         Disclosure of Supplemental Cash Flow Information    HTML     77K 
75: R16         Fair Value Measurements                             HTML    124K 
63: R17         Concentrations and Credit Risk                      HTML     32K 
65: R18         Receivables                                         HTML     69K 
70: R19         Property and Equipment                              HTML     57K 
93: R20         Goodwill and Intangible Assets                      HTML    161K 
81: R21         Employee Benefit Plans                              HTML     48K 
57: R22         Closure and Post-Closure Obligations                HTML     81K 
69: R23         Debt                                                HTML     84K 
59: R24         Income Taxes                                        HTML    202K 
27: R25         Commitments and Contingencies                       HTML     48K 
82: R26         Equity                                              HTML    132K 
89: R27         Earnings Per Share                                  HTML    107K 
41: R28         Segment Reporting                                   HTML    268K 
40: R29         Quarterly Financial Data (Unaudited)                HTML     93K 
44: R30         Subsequent Event                                    HTML     27K 
45: R31         Summary of Significant Accounting Policies          HTML    133K 
                (Policies)                                                       
47: R32         Summary of Significant Accounting Policies          HTML     31K 
                (Tables)                                                         
22: R33         Business Combinations (Tables)                      HTML    140K 
79: R34         Disclosure of Supplemental Cash Flow Information    HTML     83K 
                (Tables)                                                         
55: R35         Fair Value Measurements (Tables)                    HTML    117K 
58: R36         Receivables (Tables)                                HTML     69K 
31: R37         Property and Equipment (Tables)                     HTML     54K 
92: R38         Goodwill and Intangible Assets (Tables)             HTML    160K 
15: R39         Employee Benefit Plans (Tables)                     HTML     35K 
48: R40         Closure and Post-Closure Obligations (Tables)       HTML     78K 
84: R41         Debt (Tables)                                       HTML     81K 
29: R42         Income Taxes (Tables)                               HTML    208K 
39: R43         Commitments and Contingencies (Tables)              HTML     41K 
43: R44         Equity (Tables)                                     HTML    130K 
52: R45         Earnings Per Share (Tables)                         HTML    106K 
21: R46         Segment Reporting (Tables)                          HTML    262K 
35: R47         Quarterly Financial Data (Unaudited) (Tables)       HTML     95K 
17: R48         Description of Business (Details)                   HTML     29K 
83: R49         Summary of Significant Accounting Policies          HTML     52K 
                (Details)                                                        
28: R50         Summary of Significant Accounting Policies          HTML     46K 
                (Details 2)                                                      
80: R51         Business Combination (Details)                      HTML    182K 
32: R52         Disclosure of Supplemental Cash Flow Information    HTML     71K 
                (Details)                                                        
49: R53         Fair Value Measurements (Details)                   HTML     55K 
16: R54         Concentrations and Credit Risk (Details)            HTML     42K 
20: R55         Receivables (Details)                               HTML     54K 
42: R56         Property and Equipment (Details)                    HTML     57K 
25: R57         Goodwill and Intangible Assets (Details)            HTML    158K 
87: R58         Employee Benefit Plans (Details)                    HTML     65K 
54: R59         Closure and Post-Closure Obligations (Details)      HTML     28K 
72: R60         Closure and Post-Closure Obligations (Details 2)    HTML     29K 
34: R61         Closure and Post-Closure Obligations (Details 3)    HTML     73K 
37: R62         Debt (Details)                                      HTML    137K 
78: R63         Income Taxes (Details)                              HTML     92K 
76: R64         Income Taxes (Details 2)                            HTML     79K 
56: R65         Income Taxes (Details 3)                            HTML     53K 
77: R66         Commitments and Contingencies (Details)             HTML     66K 
33: R67         Equity (Details)                                    HTML     39K 
60: R68         Equity (Details 2)                                  HTML    189K 
88: R69         Equity (Details 3)                                  HTML     49K 
19: R70         Earnings Per Share (Details)                        HTML     68K 
26: R71         Segment Reporting (Details)                         HTML    101K 
50: R72         Segment Reporting (Details 2)                       HTML     81K 
24: R73         Segment Reporting (Details 3)                       HTML     46K 
91: R74         Quarterly Financial Data (Unaudited) (Details)      HTML     61K 
30: R75         Subsequent Event (Details)                          HTML     39K 
90: XML         IDEA XML File -- Filing Summary                      XML    144K 
18: EXCEL       IDEA Workbook of Financial Reports                  XLSX    241K 
38: EXCEL       IDEA Workbook of Financial Reports (.xls)            XLS   3.37M 
 9: EX-101.INS  XBRL Instance -- ecol-20141231                       XML   3.83M 
11: EX-101.CAL  XBRL Calculations -- ecol-20141231_cal               XML    251K 
12: EX-101.DEF  XBRL Definitions -- ecol-20141231_def                XML    667K 
13: EX-101.LAB  XBRL Labels -- ecol-20141231_lab                     XML   1.75M 
14: EX-101.PRE  XBRL Presentations -- ecol-20141231_pre              XML   1.16M 
10: EX-101.SCH  XBRL Schema -- ecol-20141231                         XSD    182K 
23: ZIP         XBRL Zipped Folder -- 0001047469-15-001480-xbrl      Zip    234K

‘EX-101.SCH’   —   XBRL Schema — ecol-20141231

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<xsd:element name="AcquiredEntityNumberOfYearsInService" id="ecol_AcquiredEntityNumberOfYearsInService" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="EntityAndThermalRecyclingOperationOwnerOperatorMember" id="ecol_EntityAndThermalRecyclingOperationOwnerOperatorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PermitsAndLicensesMember" id="ecol_PermitsAndLicensesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisposalCellAccountingPolicyTextBlock" id="ecol_DisposalCellAccountingPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TreasuryStockPolicyTextBlock" id="ecol_TreasuryStockPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisposalFacilityAndEquipmentMember" id="ecol_DisposalFacilityAndEquipmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PeriodOfFinancialAssuranceForClosureAndPostClosureMonitoringForEachFacility" id="ecol_PeriodOfFinancialAssuranceForClosureAndPostClosureMonitoringForEachFacility" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ScheduleOfDefinedContributionPlanDisclosuresTable" id="ecol_ScheduleOfDefinedContributionPlanDisclosuresTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SavingsAndRetirementPlanMember" id="ecol_SavingsAndRetirementPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SimplifiedPensionPlanMember" id="ecol_SimplifiedPensionPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="StablexFacilityMember" id="ecol_StablexFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="GuaranteeObligationTerm" id="ecol_GuaranteeObligationTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="FairValueAssumptionsExpectedInflationRate" id="ecol_FairValueAssumptionsExpectedInflationRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AssetRetirementObligationTable" id="ecol_AssetRetirementObligationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AssetRetirementObligationLineItems" id="ecol_AssetRetirementObligationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ClosureAndPostClosureAssetsRollForward" id="ecol_ClosureAndPostClosureAssetsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ClosureAndPostClosureAssets" id="ecol_ClosureAndPostClosureAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="ClosureAndPostClosureAssetsAdditionsOrAdjustments" id="ecol_ClosureAndPostClosureAssetsAdditionsOrAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ClosureAndPostClosureAssetsAmortization" id="ecol_ClosureAndPostClosureAssetsAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="ClosureAndPostClosureAssetsForeignCurrencyTranslation" id="ecol_ClosureAndPostClosureAssetsForeignCurrencyTranslation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="AmendedAndRestated2005NonEmployeeDirectorCompensationPlanMember" id="ecol_AmendedAndRestated2005NonEmployeeDirectorCompensationPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RestrictedStockPlan2006Member" id="ecol_RestrictedStockPlan2006Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NonEmployeeDirectorMember" id="ecol_NonEmployeeDirectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockValueAssigned" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockValueAssigned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRequirementsConditionPercentageOfAttendanceInBoardMeetings" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRequirementsConditionPercentageOfAttendanceInBoardMeetings" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ScheduleOfChangeInClosureAndPostClosureAssetsTableTextBlock" id="ecol_ScheduleOfChangeInClosureAndPostClosureAssetsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisposalCellAccountingAbstract" id="ecol_DisposalCellAccountingAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="UnionNameAxis" id="ecol_UnionNameAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="UnionNameDomain" id="ecol_UnionNameDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PaperAlliedIndustrialChemicalAndEnergyWorkersInternationalUnionMember" id="ecol_PaperAlliedIndustrialChemicalAndEnergyWorkersInternationalUnionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CommunicationsEnergyAndPaperworkersUnionMember" id="ecol_CommunicationsEnergyAndPaperworkersUnionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIntrinsicValueAbstract" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIntrinsicValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="InsurancePolicyTextBlock" id="ecol_InsurancePolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RevenueRecognitionNumberOfPrimarySources" id="ecol_RevenueRecognitionNumberOfPrimarySources" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AllowanceForDoubtfulAccountsReceivablePeriodAdjustments" id="ecol_AllowanceForDoubtfulAccountsReceivablePeriodAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="UnrecognizedTaxBenefitsWithAccruedInterest" id="ecol_UnrecognizedTaxBenefitsWithAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="EmployeeAndDirectorsStockOptionsMember" id="ecol_EmployeeAndDirectorsStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TreatmentAndDisposalMember" id="ecol_TreatmentAndDisposalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CommonStockIssuanceCost" id="ecol_CommonStockIssuanceCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="StockIssuedDuringPeriodSharesIssuedPursuantToUnderwritersOptionToPurchaseAdditionalShares" id="ecol_StockIssuedDuringPeriodSharesIssuedPursuantToUnderwritersOptionToPurchaseAdditionalShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ScheduleOfBusinessAcquisitionPurchasePriceAllocationTableTextBlock" id="ecol_ScheduleOfBusinessAcquisitionPurchasePriceAllocationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OneSignificantCustomerMember" id="ecol_OneSignificantCustomerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DeferredTaxAssetsEnvironmentalComplianceAndOtherSiteRelatedCosts" id="ecol_DeferredTaxAssetsEnvironmentalComplianceAndOtherSiteRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="IncreaseInRestrictedCashAndInvestments" id="ecol_IncreaseInRestrictedCashAndInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="DecreaseInRestrictedCashAndInvestments" id="ecol_DecreaseInRestrictedCashAndInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="RestrictedCashCashEquivalentsAndInvestmentsPolicyTextBlock" id="ecol_RestrictedCashCashEquivalentsAndInvestmentsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TheEnvironmentalQualityCompanyMember" id="ecol_TheEnvironmentalQualityCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ScheduleOfMaximumConsolidatedSeniorSecuredLeverageRatioTableTextBlock" id="ecol_ScheduleOfMaximumConsolidatedSeniorSecuredLeverageRatioTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DebtInstrumentPeriodAxis" id="ecol_DebtInstrumentPeriodAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DebtInstrumentPeriodDomain" id="ecol_DebtInstrumentPeriodDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DebtInstrumentPeriodOneMember" id="ecol_DebtInstrumentPeriodOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DebtInstrumentPeriodTwoMember" id="ecol_DebtInstrumentPeriodTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DebtInstrumentPeriodThreeMember" id="ecol_DebtInstrumentPeriodThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NumberOfMultiemployerPlans" id="ecol_NumberOfMultiemployerPlans" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="DebtInstrumentEarlyTerminationPenalties" id="ecol_DebtInstrumentEarlyTerminationPenalties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="AssetRetirementObligationLiabilitiesAcquired" id="ecol_AssetRetirementObligationLiabilitiesAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="AmountOfDebtHedgedByInterestRateDerivatives" id="ecol_AmountOfDebtHedgedByInterestRateDerivatives" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="NumberOfEmployeesUnderUnionContractsThatHaveExpired" id="ecol_NumberOfEmployeesUnderUnionContractsThatHaveExpired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AssetAcquiredInEqAcquisition" id="ecol_AssetAcquiredInEqAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ServicesMember" id="ecol_ServicesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IntersegmentMember" id="ecol_IntersegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AdjustedEbitda" id="ecol_AdjustedEbitda" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="ReconciliationOfAdjustedEbitdaToNetIncomeTableTextBlock" id="ecol_ReconciliationOfAdjustedEbitdaToNetIncomeTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<element id="ecol_NumberOfEmployeesUnderUnionContracts" name="NumberOfEmployeesUnderUnionContracts" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema"/>
<xsd:element name="PermitsAndLicensesNonamortizingMember" id="ecol_PermitsAndLicensesNonamortizingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsIncludingAccruedInterest" id="ecol_UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsIncludingAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRequirementsConditionPercentageOfAttendanceInCommitteeMeetings" id="ecol_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRequirementsConditionPercentageOfAttendanceInCommitteeMeetings" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="Local324OperatingEngineersUnionMember" id="ecol_Local324OperatingEngineersUnionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AccretionAndNonCashAdjustmentOfClosurePostClosureLiabilities" id="ecol_AccretionAndNonCashAdjustmentOfClosurePostClosureLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DynecolIncMember" id="ecol_DynecolIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
</xsd:schema>

3 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

10/21/15  SEC                               UPLOAD9/24/17    1:166K US Ecology Holdings, Inc.
10/15/15  SEC                               UPLOAD9/24/17    1:127K US Ecology Holdings, Inc.
 7/22/15  SEC                               UPLOAD9/24/17    1:41K  US Ecology Holdings, Inc.
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