<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0000802492</cik>
        <entityName>EA ENGINEERING SCIENCE &amp; TECHNOLOGY INC</entityName>
        <issuerAddress>
            <street1>11019 MCCORMICK RD</street1>
            <city>HUNT VALLEY</city>
            <stateOrCountry>MD</stateOrCountry>
            <zipCode>21031</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>4105847000</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Loren</firstName>
                <middleName>D</middleName>
                <lastName>Jenson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick Road</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ian</firstName>
                <middleName>D</middleName>
                <lastName>MacFarlane</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick Road</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Geirge</firstName>
                <lastName>O'Brien</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Nicholas</firstName>
                <lastName>Masucci</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>412 Mt. Kemble</street1>
                <city>Morristown</city>
                <stateOrCountry>NJ</stateOrCountry>
                <zipCode>07960</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Larry</firstName>
                <middleName>D</middleName>
                <lastName>Walker</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2445 M Street NW</street1>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <zipCode>20037</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Michael</firstName>
                <middleName>S</middleName>
                <lastName>Battle</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Pater</firstName>
                <middleName>A</middleName>
                <lastName>Ney</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Frank</firstName>
                <middleName>J</middleName>
                <lastName>Aquino</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>H.</firstName>
                <middleName>Lee</middleName>
                <lastName>Becker</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>221 Sun Valley Blvd.</street1>
                <city>Lincoln</city>
                <stateOrCountry>NE</stateOrCountry>
                <zipCode>68526</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <lastName>Boltz</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jon</firstName>
                <middleName>B</middleName>
                <lastName>Brownstein</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>William</firstName>
                <middleName>L</middleName>
                <lastName>Goodfellow</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Brenda</firstName>
                <middleName>L</middleName>
                <lastName>Herman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <middleName>W</middleName>
                <lastName>Hills</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Steven</firstName>
                <middleName>H</middleName>
                <lastName>Kuhr</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Joel</firstName>
                <middleName>J</middleName>
                <lastName>Lazzeri</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Frederick</firstName>
                <middleName>W</middleName>
                <lastName>Meyer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>P</middleName>
                <lastName>Newman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>H.</firstName>
                <middleName>Gordon</middleName>
                <lastName>Porter</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Daviv</firstName>
                <middleName>S</middleName>
                <lastName>Santoro</lastName>
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            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Richard</firstName>
                <lastName>Waterman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Roger</firstName>
                <middleName>W</middleName>
                <lastName>Place</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>405 S. Highway 121</street1>
                <city>Lewisville</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75067</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Anwer</firstName>
                <middleName>J</middleName>
                <lastName>Hasan</lastName>
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                <street1>11019 McCormick</street1>
                <city>Hunt Valley</city>
                <stateOrCountry>MD</stateOrCountry>
                <zipCode>21031</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$25,000,001 - $100,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-01-26</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>None</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>None</street1>
                    <city>None</city>
                    <stateOrCountry>MD</stateOrCountry>
                    <zipCode>None</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <state>MD</state>
                    <state>NE</state>
                    <state>NY</state>
                    <state>PA</state>
                    <state>RI</state>
                    <state>TX</state>
                    <state>WA</state>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>110121</totalOfferingAmount>
            <totalAmountSold>110121</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>7</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>EA ENGINEERING SCIENCE &amp; TECHNOLOGY INC</issuerName>
                <signatureName>FJA</signatureName>
                <nameOfSigner>Frank J. Aquino</nameOfSigner>
                <signatureTitle>Vice President &amp; General Counsel</signatureTitle>
                <signatureDate>2010-02-05</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
