A concrete-testing firm formerly based in New Hyde Park was charged Thursday with running a massive criminal scheme to falsify results on some of the biggest projects in the New York City area for 12 years.

American Standard Testing and Consulting Laboratories Inc. and six of its executives were accused of submitting fake tests at sites ranging from Yankee Stadium and LaGuardia Airport to the Javits Center, the Intrepid Museum and Memorial Sloan-Kettering Cancer Center.

Officials said the company worked on projects in all five boroughs, as well as a few on Long Island and in Westchester County, but said there were no immediate concerns about structural integrity at sites American Standard was supposed to test.

"Government agencies and private companies paid thousands of dollars for test results that were no more than worthless pieces of paper," said Manhattan District Attorney Cyrus Vance, whose office brought the charges.

The company and executives Alan Fortich, Alvaro Fortich, Bruce Pomo, Shamim Akond, Michael Rabkin and Richard Kasparian, of Manhasset, pleaded not guilty in State Supreme Court in Manhattan Thursday.

Richard Leff, a lawyer for American Standard, and owner Alan Fortich, 44, said after the hearing "They vehemently deny the allegations contained in the indictment. We will fight this." He described the issues in the case as "an interpretive thing" but refused to elaborate.

No Nassau or Suffolk sites were listed in the indictment, but a source said the firm had worked on projects that included Stratford Elementary School in Garden City, an apartment project in Stony Brook and a state Department of Transportation-Office of General Services facility on Long Island.

Vance said steps had been taken to assure the "safety and stability" of the major public projects, which also included some New York City schools and the Second Avenue subway. Garden City's school superintendent said he would investigate.

Several years ago, American Standard replaced another concrete-testing firm, Testwell Labs, whose results had been questioned on some major projects. Thursday's indictment said American Standard's fraudulent moneymaking scheme operated from 1997 until 2009.

"Defendants regularly skipped vital safety tests and created false reports to create the impression that the tests were performed," the indictment said. "Professional engineers throughout New York . . . relied on the results to assess the quality of building materials in hundreds of private and public construction projects."

Prosecutors said they believed that none of more than 3,000 test reports in American Standard's database contained legitimate results.

American Standard has been investigated since 2009, and Leff said its operations were considerably diminished from its heyday. Prosecutors said the firm's headquarters is now in Whitestone, Queens.

With Matthew Chayes

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