City of San Fernando, Pampanga - Landslides/debris flow in Sitio Malinta, Subic, Zambales, damanging two (2) houses near the creek banks. The two (20 landslides/debris flow happened on August 1 & 4, 2011.

Following the occurrence of landslides/debris flow, on August 5, 2011, Mines and Geosciences Bureau (MGB) 3 OIC, Regional Director Danilo U. Uykieng instructed the Geohazard Mapping and Assessment Team (GMAT) headed by OIC, Chief Geologist Noel Lacadin to conduct immediately an initial geohazard assessment in the said area.

The area and vicinity had been coveed by the READY Project (MGB-PAGASA-NAMRIA-PHIVOLCs-NDCC-OCD-CSC AND UDP- AUSAID) 1:50,000 Geohazard Mapping in 2008. Sitio Malinta was classified as low landslide susceptibility but is within a debris accumulation zone. The areas upslope to the west, northwest and north representing the slopes of Saddle Mt. have a moderate to high susceptibility.

During the conduct of the geohazard assessment, the GMAT observed 57 houses were already damaged due to the continuous debris-mudflows with boulders from the two creeks draining to the impact area. The GAMT together with the barangay officials ordered forced evacuation of the remaining residents of So. Malinta and nearby St. Mary Subdivision. A total of 76 families were already evacuated to the evacuation center. The debri-mudflows estimated volume is 20,000 cubic meters of remobilized landslide deposit composed of rock, soil and mud to the Manzano compound. Soldiers were posted at the impact area to secure and prevent any unauthorized entry.

The GAMT briefed Subic Mayor Jefferson F. Khonghun on the landslide/debris flow assessment and the recommended precautionary/mitigating measures to take to prevent loss of life and farther damaged to property. The Mayor in recognition to the technical assistance of the GAMT for the concern on the safety of their constituents issued a Certificate of Appreciation to the individual members of the GAMT.