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  <xsd:element abstract="true" id="awx_OtherRevenueMember" name="OtherRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_OutsideDirectorAccreditedInvestorMember" name="OutsideDirectorAccreditedInvestorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_PredeterminedVestingPrice" name="PredeterminedVestingPrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="awx_RelatedPartyTransactionPercentageOfTotalInvestment" name="RelatedPartyTransactionPercentageOfTotalInvestment" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="awx_RevenueFromContractWithCustomerExcludingAssessedTaxPercentage" name="RevenueFromContractWithCustomerExcludingAssessedTaxPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_RoomRentalMember" name="RoomRentalMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_SalesRevenueNetToExternalCustomersMember" name="SalesRevenueNetToExternalCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_SalonAndSpaServicesMember" name="SalonAndSpaServicesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_ScheduleOfCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsTableTextBlock" name="ScheduleOfCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_ScheduleOfPeriodAndPredeterminedStockPriceNeededForVestingTableTextBlock" name="ScheduleOfPeriodAndPredeterminedStockPriceNeededForVestingTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_SharebasedCompensationAwardTrancheFiveMember" name="SharebasedCompensationAwardTrancheFiveMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_SharebasedCompensationAwardTrancheFourMember" name="SharebasedCompensationAwardTrancheFourMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_StockOptionsBeginsVestingPeriodDescription" name="StockOptionsBeginsVestingPeriodDescription" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_StockOptionsEndsVestingPeriodDescription" name="StockOptionsEndsVestingPeriodDescription" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_SuspendedInjectionWellCostsDisclosureTextBlock" name="SuspendedInjectionWellCostsDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_TenPercentShareholdersMember" name="TenPercentShareholdersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_TermLoanAgreementMember" name="TermLoanAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_The2019LongtermIncentivePlanMember" name="The2019LongtermIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_The2019TermLoanAgreementMember" name="The2019TermLoanAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_TheLineOfCreditAgreementMember" name="TheLineOfCreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_ThreeDayTreasuryRateTwoDaysPriorToResetMember" name="ThreeDayTreasuryRateTwoDaysPriorToResetMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_TwoCustomersMember" name="TwoCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_WasteBrokerageAndManagementServicesMember" name="WasteBrokerageAndManagementServicesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_WasteManagementServicesMember" name="WasteManagementServicesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="awx_WeightedAverageNumberOfSharesOutstandingAssumingDilution" name="WeightedAverageNumberOfSharesOutstandingAssumingDilution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-11-longterm-incentive-plan-period-and-predetermined-stock-price-needed-for-vesting-details" name="statement-statement-note-11-longterm-incentive-plan-period-and-predetermined-stock-price-needed-for-vesting-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-11-longterm-incentive-plan-stock-option-activity-details" name="statement-statement-note-11-longterm-incentive-plan-stock-option-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-11-longterm-incentive-plan-tables" name="statement-statement-note-11-longterm-incentive-plan-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-13-business-segment-information-segment-reporting-information-details" name="statement-statement-note-13-business-segment-information-segment-reporting-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-13-business-segment-information-segment-reporting-information-details0C4D34BE-0419-4C60-9561-DCE7FCFD445D" name="statement-statement-note-13-business-segment-information-segment-reporting-information-details0C4D34BE-0419-4C60-9561-DCE7FCFD445D" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-13-business-segment-information-segment-reporting-information-details4D3858C0-6A6B-41D0-AA7F-6AC817F2B09B" name="statement-statement-note-13-business-segment-information-segment-reporting-information-details4D3858C0-6A6B-41D0-AA7F-6AC817F2B09B" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-13-business-segment-information-tables" name="statement-statement-note-13-business-segment-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-4-cash-cash-equivalents-and-restricted-cash-cash-cash-equivalents-and-restricted-cash-details" name="statement-statement-note-4-cash-cash-equivalents-and-restricted-cash-cash-cash-equivalents-and-restricted-cash-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-4-cash-cash-equivalents-and-restricted-cash-tables" name="statement-statement-note-4-cash-cash-equivalents-and-restricted-cash-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-5-revenues-allowance-for-doubtful-accounts-details" name="statement-statement-note-5-revenues-allowance-for-doubtful-accounts-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-5-revenues-contract-assets-and-liabilities-details" name="statement-statement-note-5-revenues-contract-assets-and-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-5-revenues-contract-assets-and-liabilities-details226922F2-C5E8-451B-866C-967510DAD5B4" name="statement-statement-note-5-revenues-contract-assets-and-liabilities-details226922F2-C5E8-451B-866C-967510DAD5B4" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-5-revenues-disaggregation-of-revenue-details" name="statement-statement-note-5-revenues-disaggregation-of-revenue-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-5-revenues-tables" name="statement-statement-note-5-revenues-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-6-property-and-equipment-summary-of-property-and-equipment-details" name="statement-statement-note-6-property-and-equipment-summary-of-property-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-6-property-and-equipment-tables" name="statement-statement-note-6-property-and-equipment-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-7-leases-future-commitments-under-longterm-leases-details" name="statement-statement-note-7-leases-future-commitments-under-longterm-leases-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-7-leases-lease-cost-details" name="statement-statement-note-7-leases-lease-cost-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-7-leases-operating-leases-assets-and-liabilities-details" name="statement-statement-note-7-leases-operating-leases-assets-and-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-7-leases-operating-leases-assets-and-liabilities-details6DFFDC3B-C50D-4177-A993-85D9E4C5C895" name="statement-statement-note-7-leases-operating-leases-assets-and-liabilities-details6DFFDC3B-C50D-4177-A993-85D9E4C5C895" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-7-leases-tables" name="statement-statement-note-7-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-9-term-loans-and-line-of-credit-agreements-future-maturities-of-longterm-debt-details" name="statement-statement-note-9-term-loans-and-line-of-credit-agreements-future-maturities-of-longterm-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-9-term-loans-and-line-of-credit-agreements-summary-of-term-loan-and-line-of-credit-agreements-details" name="statement-statement-note-9-term-loans-and-line-of-credit-agreements-summary-of-term-loan-and-line-of-credit-agreements-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-9-term-loans-and-line-of-credit-agreements-summary-of-term-loan-and-line-of-credit-agreements-details9F64F183-475A-4496-B796-F4F29CE0C897" name="statement-statement-note-9-term-loans-and-line-of-credit-agreements-summary-of-term-loan-and-line-of-credit-agreements-details9F64F183-475A-4496-B796-F4F29CE0C897" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="awx_statement-statement-note-9-term-loans-and-line-of-credit-agreements-tables" name="statement-statement-note-9-term-loans-and-line-of-credit-agreements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
