pogo-wh-letter-20110125-attachment-c

8/7/2019 pogo-wh-letter-20110125-attachment-c

1/6

Attachment C


2/6

007759

From:ark MilterTo:11023ELHAZEILL5K; William Conner Glen Watabayashi; John Tarpley; Debbie Payton; Amy Merteri;,01J1 Lehr; Doug H elton; Alan MearnSubject:P ie Chart" DocDate:hursday, July 29, 2010 9:30;29 PMAttachments:i l Budget description 7 29 v7.docThe OH Budget document has just started clearance by the White House.It is positioned as a public information document and contains generaldescription of the oil fate. If there are changes I will route the finalversion. obviously not for release u ntil after clearance.Mark


3/6

Deepwater Horizon Oil BudgetBased on 60,000 barrels/day flow rate

*Remaining oil iseither at the surfaceas light sheen orweathered tar batts,has beenbiodegraded, or hasalready comeashore.

ChemicalJlyDispersed

8%Burned

5%kimmed

3%

007760

Deepw ater Horizon/BP O il Budget Calculator:W here did the oil go?The Na tional Incident Comma nd has assembled the best scientific minds in the government andindependent scientific comm unity to produce an estimate of just how m uch oil has been skimmed,burned, contained, evaporated and dispersed. They have de veloped a tool, called the O il BudgetCalculator to determine where the oil has gone. The numbers are based on best estimates of how muchoil was released and how this oil is moving and degrading.

Figure 1: Oil Budget Ca lculator- Shows what has happened to the oil.Explanation of FindingsThe Flow Rate Tec hnical Group (FRTG), assembled by the National Incident Comma nd, estimates thatas of July 15, between 3-5 m illion barrels of oil had been released from the D eepwater H orizon/BPwellhead.As shown in the pie chart (Figure 1), aggressive response efforts have been successful in recovering asignificant portion of the spilled oil. 16 percent of the oil was captured directly from the wellhead by theriser pipe insertion tube and top hat systems. In addition, burning and skimming operations collectedapproximately 11 perce nt of the oil.It is estimated that 25 percent of the oil volume quickly evaporated or dissolved into the w ater column.The volatile components of oil evaporate, while the components that a re not volatile dissolve into thewater column or form residues such as tar balls. The evaporation rate estimate is based on scientificresearch and observations conducted during the De epwater Ho rizon incident. A different evaporationrate is used for fresh and weathered oil to provide the most accurate num ber.


4/6


5/6

007762

Appendix A: Deepw ater Horizon Gulf Incident Budget Tool Report from July 28, 2010, containsdetailed explanation of calculation methods. The tool was created by the U S Geological Survey incollaboration with US Coast Guard, NOAA, and NIST.Appendix B: Acknowledgements


6/6

007763

Deepwater Horizon/BP Oil Budget Calculator:Where did the oil go?Appendix B: Acknowledgements

AuthorsJane Lubchenco, NOAA, DOCMarcia McNutt, USGS, DOIWilliam Conner, NOAA, DOCMark Sogge, USGS, DOISteven Hammond, USGS, DOICreditsThe following scientists were involved in de veloping the Oil Budge t Calculator tool:

David Mack (U SGS) Lead application developerJeff Allen (USGS) Interface designerBill Lehr (NOAA ) Lead m ass balance and oil budget scientistLCD R Lance Lindgren and CDR Peter Hoffman (USC G) A pplication requirementsSteve Hale, Kent Morgan, Kevin Laurent, and Jerry McFaul (US GS) Technical advisorsSky Bristol and Tim Kern (U SGS) Project vision and managementKevin Gallagher and Martha Garcia (USGS) Executive sponsorsThe Following Scientists created and reviewed the calculation m ethods used in the oil budget calculator:

Federal ScientistsBill Lehr, NOAARobert Jones, NOAAAlbert Venosa, EPAAntonio Possolo, NISTIndependent S cientistsRon Goodman, U. of CalgaryAI Allan, SpilTecJames Payne, Payne Env.Tom Coolbaugh, Exxon MobilEd Overton, LSUJuan Lasheras, UCSDMery Fingas, Env. Canada(ret)Ali Khelifa, Env. CanadaPat Lambert, Env. CanadaPer aging, SINTEFDavid Usher, ISCOPeter Carragher, BPMichel Boufadel, Temple Univ.

pogo-wh-letter-20110125-attachment-c

Documents