A Flagstaff Transit Agency Can't Document 5% of Its Draws

The Northern Arizona Intergovernmental Public Transportation Authority (NAIPTA) -- the regional agency that runs Flagstaff's Mountain Line bus system⧉ -- reported $23,012,542 in Federal Transit Cluster expenditures for the fiscal year ended June 30, 2025.▸ Its own independent auditor could not verify $1,148,672 of it: the Authority kept no documentation showing that money was actually spent on what it claimed when requesting federal reimbursement. That finding earned NAIPTA a qualified opinion -- auditor-speak for 'we cannot vouch for compliance in this specific area' -- on its federal transit compliance, and it is the single largest dollar figure in a U.S. Department of Transportation Inspector General review⧉ of every single audit filed nationwide from January through March 2026.

NAIPTA is a small operation by federal standards -- a regional transit authority serving one Arizona city and its surrounding county, not a state department of transportation.▸ But under the Single Audit Act⧉, any entity spending more than $750,000 in federal funds in a year (raised to $1,000,000 for fiscal years starting after October 1, 2024) must submit to an independent compliance audit, and NAIPTA's federal transit spending clears that bar many times over.

When NAIPTA's auditor reviewed 11 of the Authority's reimbursement requests⧉, 5 had not been recorded in the correct fiscal year on the Authority's own federal-spending schedule, and 5 had never been reviewed and approved by a second, authorized manager -- the basic internal check meant to catch exactly this kind of gap.▸ The auditor also found $1,487,236 in prior-year federal revenue that NAIPTA never recorded in the year it belonged, forcing a restatement of the Authority's opening books.

$1,148,672 against $23,012,542 works out to about 5.0 percent of NAIPTA's federal transit money for the year -- this outlet's own calculation from the auditor's two directly reported figures.▸ NAIPTA has not been accused of misusing that money; the finding is that it cannot prove how the money was used, which under federal grant rules is treated as its own compliance failure regardless of whether the underlying spending was legitimate. NAIPTA's corrective action plan, filed with the same audit, says the Authority has already put a second-reviewer sign-off in place for reimbursement requests and set a March 31, 2026 target date to finish training staff on the documentation federal grants require.

NAIPTA's finding surfaced because DOT's Inspector General runs this check every quarter: it pulls every single audit report uploaded to the federal Audit Clearinghouse⧉ that touches a DOT-funded program, and flags the ones serious enough to demand the Department's attention.▸ For January through March 2026, OIG pulled reports from 62 grantees, found 106 DOT-related findings among them, and judged 26 of those -- spread across 17 grantees -- significant enough to require action.

A finding counts as significant when the grantee received $250,000 or more in direct DOT money and drew a qualified, adverse, or disclaimer audit opinion, or when questioned costs topped $25,000.▸ Eight of the 26 significant findings, at 6 grantees, were repeats of problems auditors had already flagged the year before.

Only five of the 17 flagged grantees had an actual dollar figure attached, and together those five accounted for all $2,703,783 in questioned costs OIG counted nationwide.▸ Behind NAIPTA, the second-largest amount -- $971,676 -- belongs to the Confederated Tribes of the Colville Reservation⧉ in north-central Washington state, which runs road construction under the Federal Highway Administration's Indian Reservation Roads program. Unlike NAIPTA's finding, the Tribes' two findings -- $499,782 for procurement lapses including missing Buy America contract clauses, and $471,894 for unsupported project costs -- were both repeats of problems identified in the prior year's audit.

Three smaller findings round out the list: $383,445 at the City of Montgomery, Alabama, also a repeat, where 5 of 7 sampled vendors lacked documented procurement procedures; $152,120 at the RMI Ports Authority in the Marshall Islands, over unverified matching-fund contributions on airport-improvement money; and $47,870 at the Connecticut Department of Transportation, for an unauthorized extra-work payment to a rail consultant.

A questioned cost is not automatically a lost one.▸ OIG's recommendation is that the Office of the Secretary of Transportation (OST) -- the Department's top administrative office, which the Inspector General answers to on these matters -- now determine whether each of these costs was actually allowable under the grant terms, and recover the money if it was not: $1,732,107 in non-tribal questioned costs directly, and the Colville Tribes' $971,676 through a separate process coordinated with the Federal Highway Administration, since tribal transportation grants run through that agency. OST has 30 days from the report's May 20, 2026 issue date to tell OIG what it plans to do and by when; OIG says it will keep tracking the recommendation as open until OST documents that the questioned amounts have been resolved one way or the other.