Mr Hebditch said local farmers would prefer the money to be spent on dredging the rivers.
The Democrat responded that Sanford had years ago told her he supported trade and dredging.
If they don't make that, looking for positive trends is considered mere data dredging.
More than 3% of the Manx seabed is now protected from trawling and dredging.
Dredging will continue over the next few years, after which the river should be PCB-free.
Dredging rivers is the best option but it fails the "cost benefit analysis", the agency said.
The Marine Management Organisation (MMO) halted full-scale dredging, saying it could harm maerl beds.
Settling pond: man-made depression created to receive water and sand mixture directly from a dredging operation.
Dredging up opponents' past misdeeds from the stands is a staple of the matchday experience for fans.
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The Spanish national port authority completed a similar study for the Monkey Point dredging project in 2000.
Dredging: excavation, digging, scraping, draglining, suction dredging to emove sand, silt, rock or other underwater sea-bottom material.
Environmentalists have long been pressing for additional dredging of contaminated sections outside the Superfund site north of Albany.
The dredging of Falmouth Harbour could begin in early 2013, Chancellor of the Exchequer George Osborne has said.
However, protesters said they were worried about what dredging could mean for their livelihoods and local sea life.
Infrastructural works such as the construction of ports, dredging, pipelines and oil or mineral extraction may also damage sites.
"GE deserves praise for getting in front of this problem and exploring the benefits of additional dredging, " DiNapoli said.
Major dredging of the harbour is needed to accommodate the ships HMS Queen Elizabeth and HMS Prince of Wales.
Creating the zones would mean a ban on fishing, dredging and anchoring in all or some of the areas.
The Army Corps of Engineers also has being dredging in the area to deepen the channel and help navigation.
According to the Isle of Man government around 3% of the Manx seabed is now protected from trawling and dredging.
"My opponent voted against the dredging and voted against the bridge, " said Colbert Busch, the sister of comedian Stephen Colbert.
Before the go-ahead is given, a scientific trial will have to establish that dredging will not damage protected seaweed beds.
Under the proposal an area off Ramsey Bay would be closed to scallop dredging and queenie trawling to help replenish fisheries.
Olivier Blanchet, the owner skipper of the Brittany registered Le Cobbe, was fined for scallop dredging in the Granville Bay area.
It's a proxy war for settling old scores, dredging up past slights, supporting preferred teams and conferences and opposing despised ones.
Schoeffler owns a Cadillac dealership, but is worried about pollution, and about dredging and erosion that's turned native marsh into open water.
In California, the navy has long had an agreement with the Coastal Commission to send sand from dredging projects to sand-starved beaches.
Fisherman now use light mesh trawls instead of dredging the sea bed, while juvenile queenies are thrown back into the sea and protected.
Landowners in Somerset are to urge the government to fund the dredging of rivers to avoid long-term flooding in parts of the region.
BBC: Landowners call for dredging of flood-hit Somerset Levels
Dredging them up will lead to their proliferation in the water, and the fish will take in more of the stuff, not less.
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