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    <p>The power plant I ran had an emergency release valve which
      generically was called a hollow cone valve.  Properly it was a
      Howel-Bunger Valve.  I suspect that is what they are talking
      about.  for us it opened automatically whenever there was a power
      outage so as to maintain instream flows, and also as the only
      mechanism to drain down the lake in an emergency situation other
      than through the generators, which by themselves couldn't release
      enough water to do the job.  Making repairs to such an item is
      difficult if it must be available for service at all times.  I
      have no idea if tht is the case with TR Dam.</p>
    <p>Dave<br>
    </p>
    <div class="moz-cite-prefix">On 5/1/2019 10:08 AM,
      <a class="moz-txt-link-abbreviated" href="mailto:Rukim1259@sbcglobal.net">Rukim1259@sbcglobal.net</a> wrote:<br>
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    <blockquote type="cite"
      cite="mid:6A5A425C-4C4D-40AF-B1D0-245C477B1512@sbcglobal.net">
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      What are the “Hallow jet structures”?<br>
      <br>
      <div id="AppleMailSignature" dir="ltr">Sent from my I-phone</div>
      <div dir="ltr"><br>
        On May 1, 2019, at 9:54 AM, Tom Stokely <<a
          href="mailto:tstokely@att.net" moz-do-not-send="true">tstokely@att.net</a>>
        wrote:<br>
        <br>
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      <blockquote type="cite">
        <div dir="ltr">
          <div class="ydp74296e5dyahoo-style-wrap"
            style="font-family:garamond, new york, times,
            serif;font-size:16px;">
            <div>
              <div><span style="color: rgb(38, 40, 42); font-family:
                  Helvetica Neue, Helvetica, Arial, sans-serif;
                  font-size: 13px;">----- Forwarded Message -----</span><br>
              </div>
            </div>
          </div>
          <div id="ydp324b9788yahoo_quoted_7568638828"
            class="ydp324b9788yahoo_quoted">
            <div style="font-family:'Helvetica Neue', Helvetica, Arial,
              sans-serif;font-size:13px;color:#26282a;">
              <div><b>From:</b> 'SANDBERG, JEFFERY' via trinity-releases
                <<a href="mailto:trinity-releases@googlegroups.com"
                  moz-do-not-send="true">trinity-releases@googlegroups.com</a>></div>
              <div><b>To:</b> </div>
              <div><b>Sent:</b> Wednesday, May 1, 2019, 8:51:11 AM PDT</div>
              <div><b>Subject:</b> [Trinity Releases] Change Order -
                Lewiston Dam</div>
              <div><br>
              </div>
              <div>
                <div id="ydp324b9788yiv4499956092">
                  <div dir="ltr"><br>
                    <div>Project:  Lewiston Dam</div>
                    <div><br>
                    </div>
                    <div>Date     Time          From (cfs)    To (cfs)</div>
                    <div><br>
                    </div>
                    <div>4/30/19 18:00        8500             8000</div>
                    <div>4/30/19  20:00       8000             7500</div>
                    <div>4/30/19  22:00       7500            7000</div>
                    <div><br>
                    </div>
                    <div>5/01/19  00:01       7000             6500</div>
                    <div>5/01/19  02:00       6500             6000</div>
                    <div>5/01/19  04:00       6000             5500</div>
                    <div>5/01/19  06:00       5500             5000</div>
                    <div>5/01/19  08:00       5000             4500</div>
                    <div>5/01/19  10:00       4500             4000</div>
                    <div>5/01/19   12:00      4000             3500</div>
                    <div><br>
                    </div>
                    <div><br>
                    </div>
                    <div>Comment:  Emergency Reduction in Trinity Flow
                      rates due to signficant oil leak detected in
                      Hollow Jet Value release structures.</div>
                    <div><br>
                    </div>
                    <div>Issued By.  J. Sandber</div>
                  </div>
                  -- <br>
                  View online at <a
                    href="http://www.trrp.net/restore/flows/release-email/"
                    rel="nofollow" target="_blank"
                    moz-do-not-send="true">http://www.trrp.net/restore/flows/release-email/</a><br>
                  --- <br>
                  <br>
                </div>
              </div>
            </div>
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      </blockquote>
      <blockquote type="cite">
        <div dir="ltr"><span>_______________________________________________</span><br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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