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    <link:label id="lab_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5_label_en-US" xlink:label="lab_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial And Industrial [Member]</link:label>
    <link:label id="lab_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5_documentation_en-US" xlink:label="lab_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commercial And Industrial [Member]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5" xlink:to="lab_bmrc_CommercialAndIndustrialMember_63E36BEE540CE1D6FB9BB6AA1127DEB5" xlink:type="arc" />
    <link:label id="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E_terseLabel_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commercial real estate, owner-occupied</link:label>
    <link:label id="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E_label_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Real Estate Loan, Owner-Occupied [Member]</link:label>
    <link:label id="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E_documentation_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commercial Real Estate Loan, Owner-Occupied [Member]</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_CommercialRealEstateLoanOwnerOccupiedMember" xlink:label="loc_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:to="lab_bmrc_CommercialRealEstateLoanOwnerOccupiedMember_E3ECA5918C8925816787B6AA1127145E" xlink:type="arc" />
    <link:label id="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1_terseLabel_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commercial real estate, investor</link:label>
    <link:label id="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1_label_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Real Estate Loan, Investor [Member]</link:label>
    <link:label id="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1_documentation_en-US" xlink:label="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commercial Real Estate Loan, Investor [Member]</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_CommercialRealEstateLoanInvestorMember" xlink:label="loc_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:to="lab_bmrc_CommercialRealEstateLoanInvestorMember_083C2DF24133C0C6C0A3B6AA1127AAD1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction</link:label>
    <link:label id="lab_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B_label_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction Loans [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="loc_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B" xlink:to="lab_us-gaap_ConstructionLoansMember_74C4CE7D80A7C2EA3CB1B6AA1128AE0B" xlink:type="arc" />
    <link:label id="lab_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4_terseLabel_en-US" xlink:label="lab_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Home equity</link:label>
    <link:label id="lab_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4_label_en-US" xlink:label="lab_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Home Equity Loan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HomeEquityLoanMember" xlink:label="loc_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4" xlink:to="lab_us-gaap_HomeEquityLoanMember_4316E6CA6B3200FD10D0B6AA112842D4" xlink:type="arc" />
    <link:label id="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3_terseLabel_en-US" xlink:label="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Installment and other consumer</link:label>
    <link:label id="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3_label_en-US" xlink:label="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Installment And Other Consumer [Member]</link:label>
    <link:label id="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3_documentation_en-US" xlink:label="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Installment And Other Consumer [Member]</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_InstallmentAndOtherConsumerMember" xlink:label="loc_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:to="lab_bmrc_InstallmentAndOtherConsumerMember_63A5E004A099613B3076B6AA1128B1B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Impaired [Line Items]</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Impaired [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableImpairedLineItems" xlink:label="loc_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726" xlink:to="lab_us-gaap_FinancingReceivableImpairedLineItems_5931AF52F2569872224DB6AA11283726" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract_20BA818EDD37F2CAB859B6AA11285673_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract_20BA818EDD37F2CAB859B6AA11285673" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recorded investment in impaired loans:</link:label>
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract_20BA818EDD37F2CAB859B6AA11285673_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract_20BA818EDD37F2CAB859B6AA11285673" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, Recorded Investment [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract" xlink:label="loc_us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract_20BA818EDD37F2CAB859B6AA11285673" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_E644BE7895D8F228343AB6AA1129DF88_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_E644BE7895D8F228343AB6AA1129DF88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">With no specific allowance recorded</link:label>
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_E644BE7895D8F228343AB6AA1129DF88_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_E644BE7895D8F228343AB6AA1129DF88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, with No Related Allowance, Recorded Investment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_E644BE7895D8F228343AB6AA1129DF88" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">With a specific allowance recorded</link:label>
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, with Related Allowance, Recorded Investment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C" xlink:to="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_76C1D7938E16ED5B27A7B6AA11291C7C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_01407ECD0BED1BE65B6CB6AA112980D3_totalLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_01407ECD0BED1BE65B6CB6AA112980D3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total recorded investment in impaired loans</link:label>
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_01407ECD0BED1BE65B6CB6AA112980D3_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_01407ECD0BED1BE65B6CB6AA112980D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, Recorded Investment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableRecordedInvestment_01407ECD0BED1BE65B6CB6AA112980D3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_1BBA637D84CADA19F885B6AA1129C031_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_1BBA637D84CADA19F885B6AA1129C031" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unpaid principal balance of impaired loans</link:label>
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    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79_verboseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Specific allowance</link:label>
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Financing Receivable, Related Allowance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79" xlink:to="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_1EEEC068B825D3F80785B6AA112A0D79" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_FCAF9FBD02E492B67B82B6AA112A7061_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_FCAF9FBD02E492B67B82B6AA112A7061" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average recorded investment in impaired loans during the period</link:label>
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    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_DF4638BB57CD2F84098DF80D0E0DBE15_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_DF4638BB57CD2F84098DF80D0E0DBE15" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Service charges on deposit accounts, wealth management and trust services, debit card interchange fees net, and merchant interchange fees net</link:label>
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    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_95F3D077F9BBA328F4EBF80D0C6A9569_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_95F3D077F9BBA328F4EBF80D0C6A9569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Asset, Fair Value, Amount Offset Against Collateral</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_95F3D077F9BBA328F4EBF80D0C6A9569" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_95F3D077F9BBA328F4EBF80D0C6A9569" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_95F3D077F9BBA328F4EBF80D0C6A9569" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_DAFD90EB70D46181BF27485FEECEF748_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_DAFD90EB70D46181BF27485FEECEF748" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_DAFD90EB70D46181BF27485FEECEF748" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_DAFD90EB70D46181BF27485FEECEF748" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_DAFD90EB70D46181BF27485FEECEF748" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Operating Activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_3AE61341EF71D8449B45485FEED0792E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_D5E9EE667DB27B219B1C485FEED4A33A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProvisionForLoanAndLeaseLosses_6ED54FC7EEA6BC899462485FEED42531_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForLoanAndLeaseLosses_6ED54FC7EEA6BC899462485FEED42531" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for loan losses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="loc_us-gaap_ProvisionForLoanAndLeaseLosses_6ED54FC7EEA6BC899462485FEED42531" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForLoanAndLeaseLosses_6ED54FC7EEA6BC899462485FEED42531" xlink:to="lab_us-gaap_ProvisionForLoanAndLeaseLosses_6ED54FC7EEA6BC899462485FEED42531" xlink:type="arc" />
    <link:label id="lab_bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments_BC29E7F9A19C20BCEA87485FEED48DF7_terseLabel_en-US" xlink:label="lab_bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments_BC29E7F9A19C20BCEA87485FEED48DF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for losses on off-balance sheet commitments</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments" xlink:label="loc_bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments_BC29E7F9A19C20BCEA87485FEED48DF7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments_BC29E7F9A19C20BCEA87485FEED48DF7" xlink:to="lab_bmrc_ProvisionForReversalOfLossesOnOffBalanceSheetCommitments_BC29E7F9A19C20BCEA87485FEED48DF7" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncash contribution expense to employee stock ownership plan</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Ownership Plan (ESOP), Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense" xlink:label="loc_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC" xlink:to="lab_us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense_4AC64E7335B8D0905D14485FEED41CBC" xlink:type="arc" />
    <link:label id="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A_terseLabel_en-US" xlink:label="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncash director compensation expense</link:label>
    <link:label id="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A_label_en-US" xlink:label="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Expense Common Stock For Director Fees</link:label>
    <link:label id="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A_documentation_en-US" xlink:label="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncash director fees payable in common stock expensed by the entity during the period. As noncash, this element is added back to net income when calculating net cash generated by operating activities using the indirect method.</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_CompensationExpenseCommonStockForDirectorFees" xlink:label="loc_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:to="lab_bmrc_CompensationExpenseCommonStockForDirectorFees_ADE4C5325D8757A4DCCA485FEED4146A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Payment Arrangement, Noncash Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F" xlink:to="lab_us-gaap_ShareBasedCompensation_29BC9C758C6DC34E2093485FEED5C24F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2_negatedLabel_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amortization of investment security premiums, net of accretion of discounts</link:label>
    <link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2_label_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accretion (Amortization) of Discounts and Premiums, Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2" xlink:to="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_01741FC23F2970769176485FEED554B2" xlink:type="arc" />
    <link:label id="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA_negatedLabel_en-US" xlink:label="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accretion of discount on acquired loans</link:label>
    <link:label id="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA_label_en-US" xlink:label="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accretion Of Discount On Acquired Loans</link:label>
    <link:label id="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA_documentation_en-US" xlink:label="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The sum of the periodic adjustments of the difference between the contractual amounts due (principal amount) and the fair value accounted for subsequent to acquisition through accretion.</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_AccretionOfDiscountOnAcquiredLoans" xlink:label="loc_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:to="lab_bmrc_AccretionOfDiscountOnAcquiredLoans_878BA0D80365C696EBA8485FEED529CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_E3E460AF5440AFBFBF82485FEED50CC8_negatedLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_E3E460AF5440AFBFBF82485FEED50CC8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net change in deferred loan origination costs/fees</link:label>
    <link:label id="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_E3E460AF5440AFBFBF82485FEED50CC8_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_E3E460AF5440AFBFBF82485FEED50CC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Deferred Loan Origination Fees, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:label="loc_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_E3E460AF5440AFBFBF82485FEED50CC8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtAndEquitySecuritiesGainLoss_9F7CFB5A26B2F260E9BE485FEED638FC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesGainLoss_9F7CFB5A26B2F260E9BE485FEED638FC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">(Gain) loss on sale of investment securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtAndEquitySecuritiesGainLoss" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesGainLoss_9F7CFB5A26B2F260E9BE485FEED638FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndEquitySecuritiesGainLoss_9F7CFB5A26B2F260E9BE485FEED638FC" xlink:to="lab_us-gaap_DebtAndEquitySecuritiesGainLoss_9F7CFB5A26B2F260E9BE485FEED638FC" xlink:type="arc" />
    <link:label id="lab_us-gaap_BankOwnedLifeInsuranceIncome_45A0E6176764D2451326485FEED6F06C_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsuranceIncome_45A0E6176764D2451326485FEED6F06C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Earnings on bank-owned life insurance policies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BankOwnedLifeInsuranceIncome" xlink:label="loc_us-gaap_BankOwnedLifeInsuranceIncome_45A0E6176764D2451326485FEED6F06C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BankOwnedLifeInsuranceIncome_45A0E6176764D2451326485FEED6F06C" xlink:to="lab_us-gaap_BankOwnedLifeInsuranceIncome_45A0E6176764D2451326485FEED6F06C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_73B24C948BB1B09D8027485FEED6FC46_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_73B24C948BB1B09D8027485FEED6FC46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net change in operating assets and liabilities:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_73B24C948BB1B09D8027485FEED6FC46_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_73B24C948BB1B09D8027485FEED6FC46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_73B24C948BB1B09D8027485FEED6FC46" xlink:type="locator" />
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    <link:label id="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_B3D89FB7C9D689A26A5853C5871BA5DE_label_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_038A6C2827E35064B94A0AA27177FD57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_038A6C2827E35064B94A0AA27177FD57" xlink:type="locator" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_9D67F43D513A5458AEBA2D43CAE4749D" xlink:to="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_9D67F43D513A5458AEBA2D43CAE4749D" xlink:type="arc" />
    <link:label id="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_C60AE26A88DA778825A753C5871CE6A4_terseLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_02B12D88E140557695F4F5DC6928576A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After ten years</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_02B12D88E140557695F4F5DC6928576A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_02B12D88E140557695F4F5DC6928576A" xlink:to="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_02B12D88E140557695F4F5DC6928576A" xlink:type="arc" />
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    <link:label id="lab_us-gaap_HeldToMaturitySecuritiesFairValue_1E157EBEA62EF7557A0553C5871C0F07_label_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesFairValue_980927BF5BE959D2956199E04722BF99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Held-to-maturity, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_980927BF5BE959D2956199E04722BF99" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_980927BF5BE959D2956199E04722BF99" xlink:to="lab_us-gaap_HeldToMaturitySecuritiesFairValue_980927BF5BE959D2956199E04722BF99" xlink:type="arc" />
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_77EA68E0D8E20AFBBF4C53C5871CB450_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_B6638C242AC25377A01AA4459B6D0FFA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_B6638C242AC25377A01AA4459B6D0FFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_B6638C242AC25377A01AA4459B6D0FFA" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_B6638C242AC25377A01AA4459B6D0FFA" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_4A530977DFE91C1CE05D53C5871C316E_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04B077FD2CCF5AC8AF4E9F83CB77E387" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Within one year</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04B077FD2CCF5AC8AF4E9F83CB77E387" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04B077FD2CCF5AC8AF4E9F83CB77E387" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04B077FD2CCF5AC8AF4E9F83CB77E387" xlink:type="arc" />
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_87E62ECFA34A01DB56D953C5871CA754_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_97E23C96028F5B8E82ED0F1F0EDE39C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_97E23C96028F5B8E82ED0F1F0EDE39C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_97E23C96028F5B8E82ED0F1F0EDE39C6" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_97E23C96028F5B8E82ED0F1F0EDE39C6" xlink:type="arc" />
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EF325D36189F9F31406353C5871D7114_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_956B8D3288C85B5FB857AB27392ABFED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_956B8D3288C85B5FB857AB27392ABFED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_956B8D3288C85B5FB857AB27392ABFED" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_956B8D3288C85B5FB857AB27392ABFED" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_FF32244A94210977329953C5871DCE82_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_FF5B3BF6AD075514A0089DEB52BB5546" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After ten years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_FF32244A94210977329953C5871DCE82_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_FF5B3BF6AD075514A0089DEB52BB5546" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_FF5B3BF6AD075514A0089DEB52BB5546" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_A4704EFA4E314F0C6B0F53C5871D21CB_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_96B6F104806554CC9D16E6C55A10B572" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Amortized Cost</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAbstract_F639D26576F65CF9A54C9A586F059AF0" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_449271AE514156FB9AE09C5338F83953" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_449271AE514156FB9AE09C5338F83953" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_449271AE514156FB9AE09C5338F83953" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1" xlink:label="loc_us-gaap_IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1_EAFA1B3FD317871F172AF80D0C77A9E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1_EAFA1B3FD317871F172AF80D0C77A9E4" xlink:to="lab_us-gaap_IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1_EAFA1B3FD317871F172AF80D0C77A9E4" xlink:type="arc" />
    <link:label id="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851_negatedTerseLabel_en-US" xlink:label="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Payment on interest rate swaps</link:label>
    <link:label id="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851_label_en-US" xlink:label="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Payment on Interest Rate Derivative</link:label>
    <link:label id="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851_documentation_en-US" xlink:label="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payment on interest rate swaps recorded in interest income.</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_DerivativePaymentOnInterestRateDerivative" xlink:label="loc_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:to="lab_bmrc_DerivativePaymentOnInterestRateDerivative_45934446D1A44E897060F80D0C77C851" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in value of hedged loans</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1" xlink:label="loc_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C" xlink:to="lab_us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1_D1FCDD44B179FA8B95BEF80D0C77883C" xlink:type="arc" />
    <link:label id="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F_terseLabel_en-US" xlink:label="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease in value of yield maintenance agreement</link:label>
    <link:label id="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F_label_en-US" xlink:label="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Increase (Decrease) in Value of Yield Maintenance Agreement</link:label>
    <link:label id="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F_documentation_en-US" xlink:label="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in value of yield maintenance agreement recognized against interest income.</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement" xlink:label="loc_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:to="lab_bmrc_DerivativeIncreaseDecreaseInValueOfYieldMaintenanceAgreement_08EFA6E71C5F6EA57B7DF80D0C77BE7F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net losses on fair value hedging relationships recognized in interest income</link:label>
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127_label_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Gain (Loss) on Derivative, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127" xlink:to="lab_us-gaap_DerivativeGainLossOnDerivativeNet_680F81A4187C41B93E6FF80D0C774127" xlink:type="arc" />
    <link:label id="lab_bmrc_OperatingLeasesAbstract_C2FDFC1DDE12B91ECC0C5CE49A0D87BD_terseLabel_en-US" xlink:label="lab_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating leases:</link:label>
    <link:label id="lab_bmrc_OperatingLeasesAbstract_C2FDFC1DDE12B91ECC0C5CE49A0D87BD_label_en-US" xlink:label="lab_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases [Abstract]</link:label>
    <link:label id="lab_bmrc_OperatingLeasesAbstract_C2FDFC1DDE12B91ECC0C5CE49A0D87BD_documentation_en-US" xlink:label="lab_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Leases [Abstract]</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_OperatingLeasesAbstract" xlink:label="loc_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:to="lab_bmrc_OperatingLeasesAbstract_09EAE1FA0C435FE49C6075AACF68611D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_13DC388E3D93697A09EA5CE49A0D6D57_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_510CD9C68A055FF7A56DF71B04D08F22" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating lease right-of-use assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_510CD9C68A055FF7A56DF71B04D08F22" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_510CD9C68A055FF7A56DF71B04D08F22" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_510CD9C68A055FF7A56DF71B04D08F22" xlink:type="arc" />
    <link:label id="lab_bmrc_FinanceLeasesAbstract_BBFF3F510D225FD0B7F75CE49A0D0C29_terseLabel_en-US" xlink:label="lab_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance leases:</link:label>
    <link:label id="lab_bmrc_FinanceLeasesAbstract_BBFF3F510D225FD0B7F75CE49A0D0C29_label_en-US" xlink:label="lab_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Leases [Abstract]</link:label>
    <link:label id="lab_bmrc_FinanceLeasesAbstract_BBFF3F510D225FD0B7F75CE49A0D0C29_documentation_en-US" xlink:label="lab_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance Leases [Abstract]</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_FinanceLeasesAbstract" xlink:label="loc_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:to="lab_bmrc_FinanceLeasesAbstract_3BB9DCA277B15707AD1BA4DB9DA6774D" xlink:type="arc" />
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetGross_813E6B3DE6D422E7AB8B5CE49A0E1CC8_terseLabel_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance lease right-of-use assets</link:label>
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetGross_813E6B3DE6D422E7AB8B5CE49A0E1CC8_label_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-Of-Use Asset, Gross</link:label>
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetGross_813E6B3DE6D422E7AB8B5CE49A0E1CC8_documentation_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-Of-Use Asset, Gross</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_FinanceLeaseRightOfUseAssetGross" xlink:label="loc_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:to="lab_bmrc_FinanceLeaseRightOfUseAssetGross_7D4BDABCBB7254B08EEBF7EC416F83F7" xlink:type="arc" />
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_E530F51F9D6A9F72C28C5CE49A0E3890_negatedTerseLabel_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated amortization</link:label>
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_E530F51F9D6A9F72C28C5CE49A0E3890_label_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-Of-Use Asset, Accumulated Depreciation</link:label>
    <link:label id="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_E530F51F9D6A9F72C28C5CE49A0E3890_documentation_en-US" xlink:label="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-Of-Use Asset, Accumulated Depreciation</link:label>
    <link:loc xlink:href="bmrc-20190930.xsd#bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation" xlink:label="loc_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:to="lab_bmrc_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_D8B5CFF77CD751578C49D84D08BD750E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_3916744DC20F3DD5733B5CE49A0E8B8C_totalLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_AFF5BE5835C65177ACC7CAE74E62B8D8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Finance lease right-of-use assets, net</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_3916744DC20F3DD5733B5CE49A0E8B8C_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_AFF5BE5835C65177ACC7CAE74E62B8D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-of-Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_AFF5BE5835C65177ACC7CAE74E62B8D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseRightOfUseAsset_AFF5BE5835C65177ACC7CAE74E62B8D8" xlink:to="lab_us-gaap_FinanceLeaseRightOfUseAsset_AFF5BE5835C65177ACC7CAE74E62B8D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiability_063CA3856F101AE8F1085CE49A0E06DE_netLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_C2F4F04DB84B5623A246E43F8673A565" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Finance lease liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_C2F4F04DB84B5623A246E43F8673A565" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiability_C2F4F04DB84B5623A246E43F8673A565" xlink:to="lab_us-gaap_FinanceLeaseLiability_C2F4F04DB84B5623A246E43F8673A565" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_24D5ED0968288AF973109B7239F72A2A_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_24D5ED0968288AF973109B7239F72A2A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Weighted average basic shares outstanding (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_24D5ED0968288AF973109B7239F72A2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_24D5ED0968288AF973109B7239F72A2A" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_24D5ED0968288AF973109B7239F72A2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_FD6C00B58E61146D5BA39B7239F7C64A_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_FD6C00B58E61146D5BA39B7239F7C64A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Potentially dilutive common shares related to:</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_FD6C00B58E61146D5BA39B7239F7C64A_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_FD6C00B58E61146D5BA39B7239F7C64A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]</link:label>
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