Essentially, the change creates a new event from the ashes of the Calverton fest, with Radiohead, Beastie Boys, Beck, Blur, and Underworld among the confirmed acts for Giants Stadium. Others are expected to be added to the lineup.

Tickets for the original concert are being refunded and will not be honored in New Jersey. Instead, there is a new sale beginning today through fielddayfest.com and all Ticketmaster outlets. Those who had tickets to the Calverton fest will be automatically refunded to the credit card of purchase, including Ticketmaster per ticket convenience fee.

The move, just days before the originally two-day fest was to kick off at Enterprise Park June 7, signals an end to the negotiations by promoters and the city of Riverhead to secure additional police for the event. Field Day was denied a mass-gathering permit last week by Suffolk County on the grounds that Riverhead’s tiny police force would be insufficient for the tens of thousands of expected concert-goers.

Initially, Field Day organizers called the county’s decision premature, then began to talk with other local municipalities about lending a hand with police officers. According to Newsday, local police departments denied the assistance, as did the state police force.

On top of that, there was a lawsuit filed by an environmental group charging that the fest site, Enterprise Park, is the nesting place of the grasshopper sparrow, which just happens to be scheduled to lay its eggs that weekend. One of the few victories promoters had in organizing the event was that the state Supreme Court refused to issue a restraining order against the fest by the environmental groups.

The town of Riverhead tabled a vote of issuing its own permit June 3, potentially out of fear that a “no” vote would lead to a lawsuit by the festival producers.

Before the move to Giants Stadium, Field Day organizers were faced with the possibility of canceling the event, though the timing didn’t leave much room to get the word out.

Moving and scaling down compromises much of what Field Day was projected to be about – camping, arts and music. A single-day festival doesn’t lend itself well to tent life, and the speed with which equipment will have to be torn down and rebuilt means that some of the finesse will probably go missing.

And though a full listing of the modified lineup has yet to be announced, squeezing two days’ worth of artists into one day will be difficult, if not impossible.