City Attorney John Mullen on Tuesday denied a citizens group's challenge to the San Diego Chargers' "credibility," saying that a reference to "noise data calculations" made by the National Football League team's lead negotiator, Mark Fabiani, during a TV interview last month referred only to a general primer prepared for the city of Chula Vista.

The football team is considering Chula Vista and Oceanside as possible locations for a new stadium.

The citizens group Go Away Chargers made the challenge in a news release Tuesday that states activist and Go Away Chargers supporter Nadine Scott submitted a public records request for the "calculations" mentioned by Fabiani and "the city denied that any noise reports had been given, viewed or discussed by the city and the Chargers."

"If I referred to a document, it would have been this one," Fabiani said Tuesday, citing the list of answers to questions from the Chula Vista planning department including general requirements for parking, seating, and the number of car trips generated by an NFL stadium.

"We have not done noise, acoustical or traffic studies and given them to the city," Fabiani said. "The document you have is what we gave to the city, pure and simple."

Neither Go Away Chargers spokesperson attorney David O'Connell nor Scott returned calls for comment Tuesday.