(September 08, 2020) – The environment department on Tuesday defended the rehabilitation project in Manila Bay, assuring lawmakers the material use in filling in the half kilometer stretch is safe for the public.
Retired general Roy Cimatu told a congressional budget hearing that dolomite might be harmful only during the crushing process as dust particles could be inhaled by people but the pulverized product is safe for use.
He also assured lawmakers there would be no health and environmental problems when the seven tons of crushed dolomite were shipped to Manila Bay and submerged in the water.
“Nakakatakot lang ang dust particles, pero ngayon wala nang dust particles dyan,” Cimatu told congressmen in the budget hearing for the Department of Environment and Natural Resources (DENR).
Cimatu said the environment department has selected the crushed dolomite to be thrice the size of a sand granule.
“Bigger than sand, mas mabigat sa sand, at mas malaki,” Cimatu said.
Several sectors had questioned the use of dolomite as artificial sand in a partial stretch of the Manila Bay, as it was primarily used for construction and glassmaking. They also cited studies which showed harmful effects to the lungs with prolonged exposure.
But Cimatu said crushed dolomite was already used as artificial sand in some resorts in Mactan, Cebu.
He explained they had several choices for the beautification project.
The first was lahar, or the slurry produced from volcano ashes, pyroclastic material, and water. The environment secretary though said it was too fine and looked like mud.
The second option was clean sand. However, Cimatu said they could not find enough quantity from rivers as getting sand from shorelines was banned.
This was when they considered dolomite, or calcium magnesium carbonate, which was also used as nourishment and cleansing in aquariums.
“Malnourished na po yung ilalim ng tubig na yan,” Cimatu said, sharing that they already cleaned up the tonnes of garbage that ended up underwater.
They would also place geotubes to ensure that the dolomite artificial sand would not be completely washed away.
Cimatu said this was the culmination of an effort to clean Manila Bay, after building a treatment plan to rid the three esteros around the area of its garbage and dirty water.
He also clarified that the project cost 28 million pesos, and not 389 million pesos as some groups claimed.
They plan to open it up to the public in time for the International Coastal Clean-up Day on September 19.
(Reports from Ria Fernandez | Katrina Elaine Alba/MM)
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