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        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <ReturnReference>PART III</ReturnReference>
        <Explanation>SCH.J, PART II: THE EXECUTIVE DIRECTOR'S SALARY AND BENEFITS ARE ADMINISTERED BY THE UNIVERSITY OF MARYLAND CENTER FOR ENVIRONMENTAL SCIENCE, AND REIMBURSED BY THE ORGANIZATION. DURING 2010, UMCES PAID SALARIES TOTALING $128,912, DEFERRED COMPENSATION TOTALING $9,440 AND BENEFITS TOTALING $15,281 TO THE EXECUTIVE DIRECTOR. THE EXECUTIVE DIRECTOR'S SALARY AND BENEFITS ARE REPORTED ON FORM 990, PART VII, SECTION A, AND ALSO SCHEDULE J. BEGINNING 4/1/10, THE TREASURER'S SALARY AND BENEFITS WERE ADMINISTERED BY ADMINISTAFF COMPANIES II, L.P., AND REIMBURSED BY THE ORGANIZATION. DURING 2010, ADMINISTAFF PAID SALARIES TOTALING $49,251 AND BENEFITS TOTALING $6,750 TO THE TREASURER. THE TREASURER'S SALARY AND BENEFITS ARE REPORTED ON FORM 990, PART VII, SECTION A.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 3</Identifier>
        <Explanation>EFFECTIVE 4/1/10, THE ORGANIZATION TRANSFERRED THE MANAGEMENT OF PAYROLL AND BENEFIT SERVICES TO ADMINISTAFF COMPANIES II, L.P. THE ORGANIZATION LEASES ALL EMPLOYEES.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 6</Identifier>
        <Explanation>MEMBERSHIP IS COMPOSED OF REPRESENTATIVE SCIENTISTS FROM SIX INSTITUTIONS: UNIVERSITY OF MARYLAND, THE JOHNS HOPKINS UNIVERSITY, THE VIRGINIA INSTITUTE OF MARINE SCIENCE OF THE COLLEGE OF WILLIAM AND MARY, THE SMITHSONIAN INSTITUTION, OLD DOMINION UNIVERSITY AND PENN STATE UNIVERSITY. EACH INSTITUTION IS ALOTTED ONE VOTE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION B, LINE 11</Identifier>
        <Explanation>FORM 990 WAS SENT TO BOARD MEMBERS WHO WERE ASKED TO REVIEW AND COMMENT, PRIOR TO FILING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>THE EXECUTIVE DIRECTOR AND FINANCE DIRECTOR REVIEW ALL ACTIVITIES FOR POTENTIAL CONFLICTS OF INTEREST. CONFLICT OF INTEREST POLICIES ARE DISCUSSED ANNUALLY WITH ALL BOARD MEMBERS. TRUSTEES ARE POLLED AT THE ANNUAL MEETING, REGARDING ANY CONFLICTS OR POTENTIAL CONFLICTS OF INTEREST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>TRUSTEES REVIEW COMPENSATION LEVELS FOR COMPARABLE POSITIONS WITHIN THIER SIX INSTITUTIONS, AND THE SCIENFTIFIC COMMUNITY AT LARGE, TO DETERMINE APPROPRIATE SALARY LEVELS FOR THE ORGANIZATION'S MANAGEMENT POSITIONS. SALARIES ARE DELIBERATED BY ALL TRUSTEES, IN CLOSED SESSION. WRITTEN MINUTES OF ALL SESSIONS ARE MAINTAINED BY THE CORRESPONDING SECRETARY.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 18</ReturnReference>
        <Explanation>THE ORGANIZATION MAKES FORMS 1023 AND 990 AVAILABLE TO THE PUBLIC UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE ORGANIZATION MAKES GOVERNING DOCUMENTS, CONFICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CONTACT ADDRESSES FOR OFFICERS, DIRECTORS, ETC</Identifier>
        <ReturnReference>FORM 990, PART VII</ReturnReference>
        <Explanation>DR. JOHN T. WELLS - VIRGINIA INSTITUTE OF MARINE SCIENCE, GLOUCESTER POINT, VA 23062. DR. BRIAN A. DEMPSEY - PENN STATE UNIVERSITY, UNIVERSITY PARK, PA 16802. DR. THEODORE O. POEHLER - THE JOHNS HOPKINS UNIVERSITY, BALTIMORE, MD 21218. DR. DONALD F. BOESCH - CENTER FOR ENVIRONMENTAL SCIENCE UNIVERSITY SYSTEM OF CAMBRIDGE, MD 21613. DR. H. RODGER HARVEY - OLD DOMINION UNIVERSITY, NORFOLK, VA 23529. DR. JOHN M. KLINCK - OLD DOMINION UNIVERSITY, NORFOLK, VA 23529. DR. ROBERT P. BROOKS - PENN STATE UNIVERSITY, UNIVERSITY PARK, PA 16802. DR. ROGER L. MANN - VIRGINIA INSTITUTE OF MARINE SCIENCE, GLOUCESTER POINT, VA 23062. DR. WILLIAM P. BALL - JOHNS HOPKINS UNIVERSITY, BALTIMORE, MD 21218. DR. RONALD J. KLAUDA - DEPARTMENT OF NATURAL RESOURCES, ANNAPOLIS, MD 21401. MR. JOHN MURTHA - BUREAU OF WATER STANDARDS AND FACILITY REG., HARRISBURG, PA 17105. DR. DENISE BREITBURG - SMITHSONIAN ENVIRONMENT RESEARCH CENTER, EDGEWATER, MD 21037. DR. ANSON HINES - SMITHSONIAN ENVIRONMENT RESEARCH CENTER, EDGEWATER, MD 21037.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Explanation>THE AUDIT PROCESS HAS NOT CHANGED FORM THE PRIOR YEARS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>GENERAL EXPLANATION</Identifier>
        <Explanation>THIS RETURN IS BEING FILED BETWEEN MARCH 1, 2012, AND MARCH 30, 2012, AS DIRECTED BY THE IRS IN NOTICE 2012-4, BECAUSE ELECTRONIC FILING WAS NOT AVAILABLE JANUARY 1, 2012 THROUGH FEBRUARY 29, 2012. WE REQUEST THAT PENALTIES BE WAIVED BECAUSE IT WOULD BE INEQUITABLE TO IMPOSE A PENALTY ON US DUE TO THE UNUSUAL CIRCUMSTANCES REQUIRING US TO DELAY THE FILING OF THIS RETURN.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>