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metroPCs DECLARATION FOR METROPCS RECORDS b6 -8 Security Compliance b7C -8 $144 Walnut Hill Lane Suite 800 Dallas, Texas 75231 b6 -3 Re: CASE NO: 31E-MM-108062 b7c -3 TARGET NUMBER] b3 -1 Y | hereby declare: b6 -8 b7c -8 I am employed by MetroPCS Inc. and have been designated as Custodian of Records with responsibility for MetroPCS’ compliance with the subpoena duces tecum, search warrant or court order. The attached records are true copies of all the records described in the legal process (subpoena, search warrant, or court order), I personally have conducted or supervised compliance by MetroPCS with the subpoena duces tecum, search warrant or court order. The records are either call detail or subscriber records, employee records, or other wireless records, depending upon the legal process (subpoena duces tecum, search warrant, or court order) request. The subscriber records were prepared by MetroPCS personnel in the ordinary course of business at or near the time of the act, condition, or event. Account information is entered into the MetroPCS Billing System where the data is stored. The Custodian of Records retrieves the stored data from the MetroPCS Billing System via billing software for compliance purposes. MetroPCS allows its customers’ unlimited use of their services and therefore does not need call detail records for billing purposes. Call detail records are maintained solely for the purpose of complying with legal processes as mandated by CALEA. MetroPCS selected Verisign to store call detail records for the purpose of complying with legal processes as mandated by CALEA. Verisign is a secure third-party provider and is an active consultant to federal agencies and the Office of Homeland Security. Cali detail is recorded at the MetroPCS switch at the time of the event. MetroPCS makes it a regular business practice to have the records stored for the purpose of meeting requirements for assisting government agencies with lawful subpoena requests for subscriber records. The call detail is electronically transnnitted to Verisign where the data is stored. Verisign provides a static IP address through a dedicated secure circuit for retrieval of these records. The cali detail files are maintained for approximately 6 months depending on size and quantity, after which they are automatically purged. : E] Certification of No Records: That a thorough search of our files revealed no documents, records or other material called for in the subpoena. X Requested call detail records existed at one time but all or some of the records have since been purged. I declare, under penalty of perjury, that the foregoing is true and correct. Executed at Dallas, Texas on 9/24/06 b6 -8 b7c -8 Compliance Analyst 03956-10392 ~DOJ-OGR-00030146