The fate of the future of dredging at the former Sparrows Point Shipyard has been placed in the hands of Gov. Robert L. Ehrlich Jr., according to a Baltimore County spokesman.In an attempt to halt a proposed liquefied natural gas site from being built at the 60-acre plot of land owned by Boston-based Barletta-Willis LLC, Baltimore County Executive James T. Smith Jr. sent a letter Tuesday to Ehrlich asking the governor to close Hart-Miller Island to dredge material that would result from clearing space for the plant, according to county spokesman Don Mohler III.“Until the issue of the proposed LNG plant is resolved," Smith wrote in the letter, “I am requesting that [Ehrlich] place the much-needed capacity of Hart-Miller Islands off-limits to [the LNG] project."Hart-Miller began as an Army Corps of Engineer project to create an area for dredge material taken from the bottom of Baltimore's inner and outer harbors.