United States of America, et al. v. Tetra Tech EC, Inc., et al.
Plaintiff: UNITED STATES OF AMERICA, ex rel., DONALD K. WADSWORTH, ROBER MCLEAN and SAVITH IYENGAR, ASSISTANT U.S. ATTORNEY
Defendant: TETRA TECH EC, INC., RADIOLOGICAL SURVEY & REMEDIAL SERVICES, LLC and IO ENVIRONMENTAL & INFRASTRUCTURE, INC.
Petitioner: STEPHEN C. ROLFE
Interested Party: LINDA PARKER PENNINGTON
Case Number: 26-6456
Filed: October 1, 2026
Court: U.S. Court of Appeals, Ninth Circuit
Nature of Suit: Other Statutes - False Claims Act
Docket Report

This docket was last retrieved on October 1, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
October 1, 2026 Filing 2 SCHEDULE NOTICE. Corporate Disclosure Statement due (Appellant) 10/15/2026, Appeal Answering Brief (No Transcript Due) (Appellee) 12/10/2026, Mediation Questionnaire due (Appellant) 10/6/2026, Corporate Disclosure Statement due (Appellee) 10/15/2026, Appeal Opening Brief (No Transcript Due) (Appellant) 11/10/2026. For appeal no. 26-6456, 3:16-cv-01107-JD. All briefs shall be served and filed pursuant to FRAP 31 and 9th Cir. R. 31-2.1. Failure of the petitioner(s)/appellant(s) to comply with this briefing schedule will result in automatic dismissal of the appeal. See 9th Cir. R. 42-1. [Entered: 10/01/2026 03:59 PM]
October 1, 2026 Filing 1 CASE OPENED. A copy of your notice of appeal / petition filed in 3:16-cv-01107-JD has been received in the Clerk's office of the United States Court of Appeals for the Ninth Circuit. The U.S. Court of Appeals docket number 26-6456 has been assigned to this case. All communications with the court must indicate this Court of Appeals docket number. Please carefully review the docket to ensure the name(s) and contact information are correct. It is your responsibility to alert the court if your contact information changes. Resources Available For more information about case processing and to assist you in preparing your brief, please review the Case Opening Information (for #attorneys and #pro se litigants) and review the #Appellate Practice Guide. Attorneys should consider contacting the court's #Appellate Mentoring Program for help with the brief and argument. [Entered: 10/01/2026 03:53 PM]

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Search for this case: United States of America, et al. v. Tetra Tech EC, Inc., et al.
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Plaintiff: UNITED STATES OF AMERICA, ex rel.
Represented By: Caroline Stanton
Represented By: Leslie Marie Hill
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Plaintiff: DONALD K. WADSWORTH
Represented By: Mr. David C. Anton
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Plaintiff: ROBER MCLEAN
Represented By: Mr. David C. Anton
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Plaintiff: SAVITH IYENGAR, ASSISTANT U.S. ATTORNEY
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Defendant: TETRA TECH EC, INC.
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Defendant: RADIOLOGICAL SURVEY & REMEDIAL SERVICES, LLC
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Defendant: IO ENVIRONMENTAL & INFRASTRUCTURE, INC.
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Petitioner: STEPHEN C. ROLFE
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Interested party: LINDA PARKER PENNINGTON
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