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      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleO documentId="R000002" softwareId="21013178" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>White Papers: How the US Moves Hazardous Materials A side by Side Comparison of Transportation Methods for Critically Needed Materials. Improving Upon Our Dig Laws: Evaluating an Anomalous Year, Incorporating Technology and Applying Lessons from the Past Decade. ESG in the Oilfield: Understanding the Impact of Nationwide incidents and Improving Reporting Practices. Policy Briefs: Building Back Better and Protecting What We've Built. America's Top Infrastructure Challenges. Aii Energy Month Educational Campaign: Overview, Natural Gas, Nuclear, Coal, Wind Energy, Hydropower, Solar Energy, Petroleum. 68 Policy Blogs, 6 Op Eds in national media outlets, 8 national media citations to Aii. Educational Campaigns: Launched original Aii educational campaign for general public, Monthly Newsletter to 1000+ subscribers, 15 educational YouTube videos, Joined American Flood coalition; Hosted Summer internship with two full-time communications interns. Participated in university graduate level research panel. Travel: Cross country driving trip to conduct interviews, provide education, and observe state of American infrastructure. To TX, SC, NC, VA, DC. To VA and Washington DC for technology demo to learn about infrastructure innovation in the field.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Financial data is kept in Quickbooks by the bookkeeper and made available to the executive director and board. The Form 990 is prepared and received by at least one board member prior to submission.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>The pay for Director of Public Policy was discussed and agreed upon by the board at a directors meeting.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NISF provides copies of the 3 most recently filed annual information returns (Form 990) as well as the organization's application for tax exemption upon request. These documents are in PDF and are stored within our document management system in order to afford easy access upon request. Board members are provided financial information and NISF has adopted a conflict of interest policy to improve financial transparency.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Developed and articulated public policy for services.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <ReasonableCauseExplanation documentId="R000003" softwareId="21013178" softwareVersionNum="v1.00">
      <ExplanationTxt>We are not late. With our granted extension, this 990 is due November 15, 2022. Thank you.</ExplanationTxt>
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