Officials who oppose the 91st St. Marine Transfer station want Mayor de Blasio to launch a probe into the increase, like he has with the 911 overhaul.

The controversial proposed Upper East Side garbage dumping spot has ballooned from an initial estimate of $44 million to a whopping $215 million, according to the most recent city budget.

The huge yet little-noticed price increase from 2002 to the 2015 budget estimate is nearly four times the rate of inflation.

In a letter to City Hall, officials who oppose the 91st St. Marine Transfer station ask Mayor de Blasio to investigate the hikes in a probe similar to the one he announced of the new 911 system. That project was $1 billion over budget and six years over due.

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