House Oversight and Government Reform Committee chairman Rep. Darrell Issa will question IRS commissioner John Koskinen at a Capitol Hill hearing Monday night at 7 p.m. entitled “IRS Obstruction: Lois Lerner’s Missing Emails.”

Just 72 hours after Rep. Paul Ryan scolded Koskinen and barked “I don’t believe you. … Nobody believes you,” Issa is gearing up for his own showdown with Koskinen, who refused to provide Issa’s staff this weekend with information about the loss of Lois Lerner’s emails and IRS email storage policies.

Issa’s Oversight Committee requested that the IRS make available IRS deputy chief counsel for procurement and administration Thomas Kane for a transcribed interview about the destruction of Lerner’s emails, but the IRS refused. Oversight Committee staff next requested a briefing from the IRS on its email retention programs, but the IRS did not provide it.

Koskinen testified before the House Ways and Means Committee Friday that some of Lerner’s emails from the period 2009 to 2011 were destroyed after her computer allegedly crashed and that six other IRS employees related to the conservative targeting scandal also experienced computer crashes. The Daily Caller reported that the IRS canceled its relationship with its email-archiving contractor Sonasoft just weeks after Lerner’s crash.

The current IRS commissioner’s claims to technical incompetence are undermined by the fact that he led President Clinton’s much-celebrated President’s Council on Y2K Conversion, successfully updating all of the federal government’s computer systems for the new millennium. And Issa is making known that he does not plan to let Koskinen off the hook. (VIDEO: Paul Ryan Goes Ballistic On IRS Commissioner Over Lost Emails)

Issa prepared 15 specific questions for Koskinen, giving him no later than 5 p.m. Monday, two hours before the hearing, to answer all of them in full. Those questions, provided to TheDC, are summarized below (The following is not the exact text from Issa, but rather our own summary of the questions):

1. Explain, in detail, Lois Lerner’s 2011 hard drive failure, including the date it happened, and give the names of all employees who worked on retrieving data from it.

2. When did you learn that the hard drive failure affected the Oversight Committee’s subpoena into the IRS targeting scandal, and which IRS staffers realized that the subpoena could not be fulfilled?

3. Explain all the steps the IRS took to retrieve data from Lerner’s hard drive.

4. Name all IRS employees that worked on agency email servers between 2009 and 2014.

5. Name all IRS contractors that worked on agency email or hard drive systems.

6. Give the names of the IRS employees most knowledgeable about email servers and data retention.

7. Identify the IRS employees that last had possession of Lerner’s computer, cell phones, hard drive, backup email tapes and information about errors in IRS electronic hardware.

8. Give us all relevant information about IRS document retention policies.

9. Name the type of email service the IRS uses and the type of email exchange server and tell us whether any email is stored on an IRS shared drive.

10. Explain in detail the IRS’ electronic data restoration and archival systems.

11. How many forensic images from Lerner’s failed hard drive still exist?

12. How many forensic images from Lerner’s failed hard drive still existed on August 31, 2011 (when the IRS’ contract with Sonasoft expired)?

13. List all the software and hardware malfunctions that occurred at the agency between January 1, 2011 and June 30, 2011.

14. Give us Lerner’s computer barcode.

15. Give us Lerner’s cell phone barcode.

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