After recovering 1,660 kilograms of oil-contaminated materials from the affected area as of Saturday, Nov. 7, the Philippine Coast Guard shifted to monitoring operations in Barangay Ipag, Mariveles, Bataan.
Coast Guard responds to oil spill in Barangay Ipag
Fishermen discovered approximately 25 liters of crude or used oil on Wednesday, Nov. 4, and alerted the Coast Guard Station in Bataan. The spill affected about 500 square meters of coastal waters at Sitio Naswe in Barangay Ipag. Following the alert, the Coast Guard deployed an oil boom to stop the oil from spreading to nearby coastal communities.
Cleanup efforts involved the Philippine Coast Guard and the Provincial Disaster Risk Reduction and Management Office. Crews deployed seven absorbent booms and 2,200 absorbent pads. By Thursday evening, response teams had collected 800 kilograms of oil-contaminated debris across 40 sacks. Operations continued through Friday and Saturday, bringing total recovered waste to 1,660 kilograms contained in 83 sacks, according to Coast Guard updates.
The 83 sacks of recovered waste were transported to a local transfer station in Mariveles for temporary storage. These materials will eventually be handed over to an accredited oily waste collector and a treatment, storage, and disposal facility.
Did You Know? The Municipal Environment and Natural Resources Office reported that the spill along the coastline had been reduced to an oil sheen as containment efforts took hold.
DENR orders rapid assessment of affected coastal area
The Department of Environment and Natural Resources directed its regional and environmental management teams to work closely with local government units and the Coast Guard. Secretary Juan Miguel Cuna ordered a rapid assessment of the affected coastal area and the implementation of necessary measures. The agency focused on ensuring that responsible parties comply with environmental laws and accountability measures.

Mariveles Municipal Environment and Natural Resources Office Officer-in-Charge Engr. Clay Aldrex Gomez stated in an interview that the situation was contained and reduced to an oil sheen. Gomez noted that local authorities coordinated with affected fisherfolk following the incident. Meanwhile, Guillermo Mangayao of the Mariveles Municipal Agriculture Office stated that the source of the oil slick remains unknown.
Joint Inspection and Future Outlook
At approximately 2 p.m. on Saturday, the Coast Guard and the Mariveles Municipal Disaster Risk Reduction and Management Office conducted a joint inspection of the waters surrounding the affected area. Officials found no visible traces of oil on the water’s surface. Coast Guard reports noted that any remaining oil would undergo natural weathering to gradually break down and disperse.
PCG contains Mariveles spill, collects 800 kg. oil-contaminated debris MANILA – The Philippine Coast Guard (PCG) has contained an oil spill in Mariveles, Bataan, and collected 800 kilograms of oil-contaminated debris from the affected shoreline. The spill involved 25 liters of… pic.twitter.com/PNDXsY8IdL
Authorities continue to investigate the exact source and type of oil involved in the incident. While initial findings suggested the substance came from washing activities, the Coast Guard stated that the origin requires further verification.
Questions about the oil spill and recovery efforts
When was the oil spill discovered?
Fishermen discovered approximately 25 liters of crude or used oil on Wednesday, Nov. 4, and alerted the Coast Guard Station in Bataan.
How much waste was recovered from Barangay Ipag?
Response efforts recovered 1,660 kilograms of oil-contaminated materials packed into 83 sacks as of Saturday, Nov. 7.

What is the current status of the affected waters?
During a joint inspection at 2 p.m. on Saturday, the Coast Guard and local disaster management officials found no visible traces of oil on the water’s surface.
How will local authorities ensure accountability for the unverified source of the spilled oil?
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