Author Archives: GSD

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MGB RXIII carries out Groundwater Resource Mapping and Assessment on Siargao Islands

The Mines and Geosciences Bureau Regional Office No. XIII carried out the Groundwater Resource Mapping and Assessment in the Municipalities of General Luna and San Benito, Siargao Islands, Province of Surigao del Norte on April 18 to May 5, 2018.

The said assessment was conducted by a team of geologists, cartographer and on-the-job trainees from Negros Oriental State University.

The activity aims to establish the geology of the area and determine the general groundwater resource potential of the different lithologic units. It also aims to assess the vulnerability factors that could affect the water quality of the existing water supply sources in the study area and to identify possible areas for development and future extraction.

As for the mapping aspect of the activity, it was composed of an inventory of the existing groundwater resources (e.g. springs and wells) of each barangay within the municipality; identification of the lithologic unit and the overall geomorphologic characteristic of the groundwater locale; and in situ determination of the basic water chemistry of the groundwater.

For 2018, the MGB RXIII targets for the Groundwater Resource Mapping and Assessment are the Provinces of Surigao del Norte and Agusan del Sur.


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MGB RXIII conducts Vulnerability and Risk Assessment in Surigao del Sur

The Mines and Geosciences Bureau Regional Office No. XIII conducted the Vulnerability and Risk Assessment (VRA) on April 16 to 30, 2018 in the Municipalities of Marihatag, Cagwait and Bayabas, Province of Surigao del Sur.

The said assessment was conducted by a team of geologists and an on-the-job trainee from Negros Oriental State University. The team formed two groups that were assigned in every barangay to perform geotagging in order to tag the essential landmarks such as barangay halls, health centers, schools, multi-purpose buildings, purok centers and other establishments per purok, district or sitio in all barangays of the aforementioned municipalities. The purpose of tagging landmarks or establishments is to get their exact global positioning system (GPS) coordinates and plot them on the map. Moreover, building materials and road networks were noted for data gathering. The threat of any hazard or element of risk to landslide or flooding within those establishments was also verified. Interviews with some residents in the area were also made to note the scenario and details of any disaster they have experienced so as to update the geohazard maps generated by MGB RXIII.

All the municipalities were assessed and the elements at risk identified.  Similarly, the team took note of every road’s status (concrete or non-concrete) and building materials (light or concrete). The areas where flooding and landslide susceptibility occurs (rated from low, moderate, high and very high) were also observed.

The outputs of the VRA are technical reports and Risk Maps that incorporate the population, roads and infrastructures at risk of the said hazards. These reports and maps will essentially assist the Local Government Units in their planning and pre-disaster risk activities.


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MGB conducts Training Course on Measurement and Internal Quality Control in the Analytical Laboratory

The Lands Geological Survey Division of the Mines and Geosciences Bureau Central Office conducted a Training Course on Measurement of Uncertainty and Internal Quality Control in the Analytical Laboratory with the theme “Enhancing Capabilities and Bridging Gaps Towards Effective Laboratory Performance” on April 10-14, 2018 at the Greenhills Elan Hotel in San Juan, Metro Manila.

The said activity was participated by representatives from the Lands Geological Survey Division and Metallurgical Technology Division of MGB Central Office as well as Regional Offices with Analytical Laboratory including Cordillera Administrative Region (CAR), MGB Calabarzon, Regions V, VII and XIII. Region XII also participated in preparation for their forthcoming laboratory operation. Two laboratory personnel from MGB Regional Office No. XIII Geosciences Division took part in the training course.

The activity started with the Opening Remarks delivered by Mr. Antonio N. Apostol, Jr., OIC of LGSD, followed by Ms. Jocelyn C. Villanueva, Chief of Geological Laboratory Services Section who gave the Overview of the Training Course. Engr. Juancho Pablo S. Calvez, Chief of Metallurgical Technology Division, gave an Inspirational Talk.  Mr. Admer Rey C. Dabilo, Senior Science Research Specialist from the Standard and Testing Division, Industrial Technology Development Institute, Department of Science and Technology, was the Resource Speaker. The topics tackled during Day One were the  following: Introduction to Measurement of Uncertainty and Reliable Test Result in Analytical Chemistry;  The Basic Concepts of Errors in Measurement and Measurement Uncertainty (MU); Principles for Estimating the MU of the Analytical Test Result and Guide to Uncertainty Measurement (GUM) Principle.

On the second day of the training course, Mr. Dabilo continued with the discussions about Alternative sources for starting MU on Analytical Results and decision making based on the results with a given uncertainty; Measurement Uncertainty and Method Validation; Computation of Uncertainty from Certified Reference Material and Proficiency Testing; Introduction to Analytical Chemistry and the Need for Quality Control and Statistical tools needed for Dealing with Quality Control.  After all the topics were discussed, Catching Up/Summary of remaining issues were entertained.

On the third day, Mr. Dabilo continued with the remaining topics which included the Basic Concepts in Statistically-based Quality Control and Establishment of Quality Control Chart; Evaluating Control Data on both Short-Term and Long-Term Use of Decision Rules; Preparation of In-house Reference Materials and Conduct of Homogeneity Test.

The fourth day of the training course was devoted to the Workshop on topics discussed during the three-day lecture.  The Central and Regional Offices were required to bring a laptop with installed MS Excel Program with Data Analysis Toolpak for hands-on computation purposes.

The last day of the training course was all about organizational concerns. Each Regional Offices and Central Office prepared a PowerPoint Presentation on the Updates of their Laboratory Operations and Application for Permit to Operate Chemical Laboratories.  The Chemical Laboratory Service Section of Metallurgical Technology Division of MGB Central Office, CAR and Region XIII also gave their Updates on the Application for ISO 17025:2017 The Standard for Laboratory Competence.

The training course concluded with the closing remarks of Ms. Josephine R. Uyaco, Chief of Geological Laboratory Services Section, in which she expressed her gratitude to the management for the support given to make the training a complete success. She also expressed her appreciation for the participants and the resource speakers.


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MGB conducts 2018 Geoscience Workshop

The Mines and Geoscience Bureau conducted the 2018 Geoscience Workshop on February 1 to 7, 2018 at Patio de San Jose Resort and Convention Center in Malilipot, Albay.

The workshop was jointly organized by MGB Central Office and MGB Regional Office No. V.  It was attended by key personnel from the Lands Geological Survey Division of MGB Central Office, technical and support staff from MGB RV as the host region, and six geologists from each of the Regional Offices.

Geosciences Division Chief Romeo Dalodado; Supervising Geologists Melvin Mantilla and Elaine Galido; Senior Geologists Liza Pacete and Beda Louie Cagampang; and Geologist II Ralph Angelo Plaza represented MGB Regional Office No. XIII in the workshop.

The main focus of the activity are as follows:

  1. Reporting of the MGB Central and Regional Offices status of accomplishments on the major programs of MGB for 2017 particularly the Geologic Quadrangle Mapping carried out in Regions V (Bicol Region) and IV A (CALABARZON), Vulnerability and Risk Assessment, Groundwater Resource and Vulnerability Assessment, Mineral Reservation, Ground Subsidence Hazard Assessment and IEC on 10K Geohazard Maps;
  2. Merging and consolidation of the Geologic Quadrangle Maps generated by each region with the targets of the neighboring quadrangles generated by other regions;
  3. Discussion on standardization of ArcGIS-generated map symbols, color schemes, attributes and databases;
  4. Methodologies and standardization of presentation templates and forms for the IEC on VRA activities for 2018;
  5. Issues in the implementation of the above-stated various programs and concerns on laboratory matters; and
  6. Finalization of target areas, province and/or municipalities/cities for 2018.

Accomplishments for MGB RXIII were presented by Liza Pacete for the Geologic Quadrangle Mapping and Ground Subsidence Hazard Assessment; Melvin Mantilla for the Vulnerability and Risk Assessment; Elaine Galido for the Groundwater Resource and Vulnerability Assessment and Romeo Dalodado for the Mineral Reservation Program. Liza Pacete, Melvin Mantilla, Beda Louie Cagampang and Ralph Angelo Plaza also actively participated in the seamless integration of the region’s geologic quadrangle map outputs in Region V with the boundary quadrangle maps generated by other Regional Offices.


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MGB conducts Strategic Planning for Marine Geological Survey and Research

The Marine Geological Survey Division (MGSD) of the Mines and Geosciences Bureau Central Office conducted a Seminar-Workshop on Strategic Planning for Marine Geological Survey and Research on January 22-26, 2018 at the Bali Village Hotel Resort in Tagaytay City.

The said activity was participated by representatives of all Regional Offices. Two geologists from MGB Regional Office No. XIII Geosciences Division took part in the seminar-workshop.

The activity started with a program wherein Engr. Glenn Marcelo C. Noble, Chief of Planning, Policy and International Affairs Division of MGB Central Office, delivered his opening remarks followed by the discussion of Philippine Development Plan (PDP), General Appropriations Act (GAA), Program Expenditure Classification (PRExC) and National Expenditure Program (NEP).

On the second day of the seminar-workshop, the discussion was about Project Life Cycle. Engr. Noble explained the stages of a project from Situation Analysis Stage all through the end stage which is the Project Impact Evaluation Stage. The discussion of the Rationale, Accomplishments, Plans and Ways Forward of the Coastal Geohazard Assessment Project as well as other projects and research such as the Offshore Exploration of the Philippine Rise was tackled on the third day of the seminar-workshop. Ms. Eloisa L. Legaspi, Chief of Finance Management Division of MGB Central Office discussed about Financial Considerations and Concerns. On the last day of the activity, there was a finalization of the 2019 Project Proposals of MGSD and ROs. The MGB Central Office will pilot the reassessment of high erosion and high accretion coastlines of 20 different municipalities in the country which will start in 2019. Regional Offices will follow the standardized activity in 2020 until 2023. The programming for the RPS Explorer and Marine Geodatabase was discussed among the CO participants.

The seminar-workshop concluded with closing remarks from Dr. Yolanda M. Aguilar, Chief-OIC of Marine Geological Survey Division, in which she expressed her gratitude for the cooperation and sharing of ideas among the participants for the strategic planning for Marine Geological Survey and Research.


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MGB RXIII conducts Geologic Quadrangle Mapping in Bicol Region

The Mines and Geosciences Bureau Regional Office No. XIII conducted the Geologic Quadrangle Mapping on May 2 to June 11, 2017 in Bicol Region.

A team of three geologists and one GIS Operator from MGB RXIII conducted the Geologic Quadrangle Mapping in two quadrangles, namely Polangui and Ligao. The Polangui Quadrangle comprises five municipalities and one city ‒ Balatan and Bato, Camarines Sur and Libon, Polangui, Oas, and Ligao City, Albay. On the other hand, the Ligao Quadrangle has 7 municipalities and 3 cities ‒ Polangui, Oas, Guinobatan, Camalig, Daraga, Santo Domingo, Malilipot, Ligao City, Legazpi City and Tabaco City.

The updating of Polangui Quadrangle which has an unpublished geologic map was done on the first phase of the fieldwork (May 2-May 19). The team subsequently proceeded to work on Ligao Quadrangle on the second phase of the fieldwork (May 22-June 11). Methodologies used were river/creek traversing, examining outcrops, exposures, contacts, rock sampling, and using the unpublished geologic map and other literatures to correlate the lithologies observed during the fieldwork.

The accomplishment of the team during the fieldwork are as follows: mapped/identified different lithologies within the Ligao and Polangui Quadrangles; gathered and documented data using a digital camera, handheld GPS, Brunton compass, geologic mapping data sheets and other basic mapping equipment; and obtained 37 rock samples from different locations with proposed 23 samples subject to petrography and paleontology analysis in MGB Central Office.

Geologic maps are important because they provides geologic information that can help reduce death and damage caused by geologic hazards such as earthquakes and landslides. Similarly, they are used to better find and protect or safely extract geologic resources. The said maps support our ability to locate and develop mineral and water resources; assess and protect groundwater quality; safely site solid and hazardous waste disposal facilities; and construct, restore, maintain, and protect sensitive ecosystems. Geologic maps enhance our ability to site and build the nation’s infrastructure of roads and highways, railroads, pipelines, utilities, dams and locks, buildings, and foundations as well as make more informed land‐use and planning decisions to meet societal needs.

 


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MGB RXIII carries on with its Coastal Geohazard Assessment

The Mines and Geosciences Bureau Regional Office No. 13 carried on with its Coastal Geohazard Assessment under the National Geohazard Assessment and Mapping Program.

For the first quarter of 2017, the target municipalities of MGB RXIII are Barobo, Lianga, Hinatuan and Bislig in the Province of Surigao del Sur. As for the second quarter, the Municipality of Del Carmen in the Province of Surigao del Norte was assessed on May 31 to June 7, 2017. The Municipality of Socorro in the Province of Surigao del Norte will be assessed by the third week of June 2017.

The Philippines has one of the longest coastlines in the world with an estimated extent of 36,289 kilometers. Approximately 46% of the total population in the Philippines resides in coastal areas, directly or indirectly relying on coastal resources as source of livelihood, habitation, and recreation. Many of the coastal areas are inherently vulnerable to coastal hazards – geographically or by geologic setting.

The objectives of the Coastal Geohazard Assessment Program are as follows:

  • To determine/identify coastal areas that are susceptible to coastal erosion/accretion; measure coastal profiles and conduct coastline characterization that will be combined with historic data sets to generate a coastal geohazard map.
  • To provide vital information to policymakers and the public in order to make them understand the risk of these hazards; enhance preparedness; reinforce response; foster resilience; and minimize the adverse impacts of these events (baseline record).
  • To produce erosion and accretion susceptibility maps of coastal areas to serve as important references in disaster mitigation and adaptation and in crafting land-use, coping mechanisms and development and management plans of affected communities and stakeholders.

During the actual field assessment, the following activities are undertaken:

  • Shoreline mapping

The objective is to determine coastal shift and retreat or advance of coastline through time. With the use of GPS tracking and tape measure, the shoreline is measured and tracked.

  • Beach Profiling

It aims to survey the shape (morphology) of a beach and investigate the seasonal changes in the beach profile as well as examine relationships between the beach profile and other factors such as rock type, cliff profile, sediment size or shape. Beach sampling is also done on the area where the team conducts the beach profile.

  • Longshore Drift

The objective is to determine the wave direction and where the sediment supply takes place.

  • Historical/Anecdotal Record Gathering

It involves interviews with local government officials and coastal residents (mostly the eldest residents) on the subjects of coastal flooding, coastal erosion, tsunami and other coastal geohazard occurrences in the area. The historical data gathered are used to validate and augment existing and newly acquired field data and selectively factored in the geohazard assessment.

The outputs of the Coastal Geohazard Assessment are shoreline shift maps that will give the public substantial information on coastal areas or shorelines that are prone to erosion and accretion. Threat advisories per purok and technical reports are also included in the expected outputs.


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MGB RXIII conducts Vulnerability and Risk Assessment

The Mines and Geosciences Bureau Regional Office No. 13 is currently conducting the Vulnerability and Risk Assessment (VRA) under the National Geohazard Assessment and Mapping Programme.

For the first quarter of 2017, the target municipalities of MGB RXIII are Magallanes and Las Nieves in the Province of Agusan del Norte. As for the second quarter, the Municipalities of Sibagat and Sta. Josefa in the Province of Agusan del Sur were assessed last April until the second week of May. For the rest of May until June, MGB RXIII will conduct VRA in the Municipalities of San Miguel and Tago in the Province of Surigao del Sur.

The Vulnerability and Risk Assessment is an activity following the 1:10,000 Scale Geohazard Mapping and Assessment which was concluded in 2015. The primary objective of VRA is to evaluate the existing vulnerability conditions within a municipality/city from rain-induced landslide and flood that could potentially harm the elements at risk such as people and infrastructures. The VRA could also provide technical support and information to the local government units (LGUs) in updating their Comprehensive Land Use Plan (CLUP) as well as for disaster preparedness and management.

The VRA is composed of both field assessment and table mapping analysis. Prior to the field assessment, the team pays a courtesy call on the LGUs in order to explain the objectives and methodologies of VRA for proper coordination and planning of the said activity. In addition, data needed for the output of the activity such as the administrative boundaries, road networks database and demographic profile, among others, are requested from the LGUs.

During the actual field assessment, GPS readings of the prominent structures like government facilities, school locations, churches, evacuation sites and establishments are gathered. Tracking of the existing road networks and trails are also recorded. Proposed barangay sites and evacuation centers, if present, are also assessed and located and information supplemented by interviews with the locals of the barangay. An important component of the VRA is the enhancement of the geohazard maps to render the exposure to hazard maps more up-to-date. The table mapping analysis utilizes ArcGIS software in generating the exposure maps. In the said maps, analysis is identified indicative of the vulnerability of the exposed elements at risk. These elements at risk include population, built-up areas and road networks.

The outputs of the Vulnerability and Risk Assessment are exposure maps (population at risk, built-up areas at risk and road networks at risk) and technical reports. An Information, Education and Communication (IEC) Campaign of the results of the said assessment will be conducted in the future.


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MGB RXIII conducts Groundwater Resource and Vulnerability Assessment

The Mines and Geosciences Bureau Regional Office No. XIII conducted Groundwater Resource and Vulnerability Assessment from January to April 2017 in four (4) municipalities of Agusan del Norte and Province of Dinagat Islands.

A team of geologists, geologic aide, and laboratory technician from the MGB RXIII Geosciences Division conducted the said assessment in the following municipalities covering forty-seven (47) barangays:

Municipality                                     No. of Barangays
Las Nieves, Agusan del Norte                             20
Magallanes, Agusan del Norte                              8
Loreto, Province of Dinagat Islands               10
Tubajon, Province of Dinagat Islands              9

One of the functions of the Mines and Geosciences Bureau is the conduct of specialized researches and assessment of the country’s groundwater resources. The Groundwater Resource and Vulnerability Assessment Program is a major activity that the Mines and Geosciences Bureau has initiated to conduct as its contribution to the implementation of one of the provisions of the Clean Water Act (2004) stipulated in Chapter 3 Section 19-D which is to prepare and publish a national groundwater vulnerability map incorporating the prevailing standards and methodologies.

Theobjectives of the Groundwater Resource and Vulnerability Assessment Program are as follows:

  1. Assess the availability of groundwater on the various geologic formations in the entire country;
  2. Establish the quality/chemistry of groundwater in groundwater basins;
  3. Establish the potentials and limitations of available groundwater in the various groundwater basins; and
  4. Assess groundwater vulnerability of aquifers in the country.

Before conducting the said activity, the team paid a courtesy call on the Local Government Unit (LGU) – Municipal Disaster Risk Reduction Management Office (MDRRMO) and the Office of the Mayor of every municipality.

The team is tasked to make an inventory of all the water sources of every barangay during fieldwork.  Similarly, the team must geotag and document the water sources. Primary field data such as geology, geomorphology and the type of water source were gathered. The source of water could either be well type (shallow or deep), spring type, sinkhole, or river. Water samples were also collected per water source for the analysis of physical and chemical properties. The said properties were analyzed within 24 hours after the samples were collected. In addition, interviews were also conducted by the team in every barangay to gather secondary field data such as date of well construction, puroks supplied, location of the water source and other details in order for the team to note the past and present situation of the water sources.


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MGB RXIII joins the conduct of CY 2017 1st Quarter National Simultaneous Earthquake Drill

The Mines and Geosciences Bureau Regional Office No. XIII joined the conduct of the CY 2017 1st Quarter National Simultaneous Earthquake Drill (NSED) on March 31, 2017 at 2:00 P.M. The primary purpose of the earthquake drill is to test the response capacity and capability of MGB RXIII employees to earthquake incidents.

Mr. Romeo M. Dalodado, MGB RXIII Geosciences Division Chief, gave a brief presentation on “How to Conduct an Earthquake Drill” that serves as a guide for employees to what should be done before, during and after an earthquake.  He also discussed the different stages in conducting the earthquake drill which include Planning/Organizing an Earthquake Drill, Developing the Earthquake Evacuation Plan, Orientation Prior to the Conduct of an Earthquake Drill and Actual Conduct of an Earthquake Drill.  Since the earthquake drill is performed quarterly every year, Mr. Dalodado reminded the employees of the established evacuation route and muster point/assembly area of the MGB RXIII Office.  A week before the earthquake drill, Mr. Dalodado gave a lecture on Earthquake and Seismic Hazards to MGB RXIII employees on March 20, 2017 in the aftermath of the magnitude 6.7 earthquake that hit Surigao City and some municipalities in the Province of Surigao del Norte.

The drill started with the one-minute buzzer alarm that indicates earthquake or ground shaking.  Everyone moved away from windows, glass or light fixture and performed the duck, cover and hold under desks, tables or chairs while the siren/bell sounded. After the “shaking” has stopped, everyone evacuated the office building and proceeded to go to identified evacuation areas using pre-determined routes.  Every division has an assigned observer who is tasked to take note of how the participants performed. When everyone has already settled in the muster point, headcount was then undertaken.

MGB RXIII employees diligently performed the earthquake drill to ensure that utmost consciousness, preparedness and response to disasters are achieved.

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Surigao City Weather…

Chance of a Thunderstorm
Ngayon 05/23 30%
High 31° / Low 24°
Chance of a Thunderstorm
Bahagyang maulap na maaaring may pagkulog at pagkidlat. Mataas 31celsius. ENE na hangin sa 10 hanggang 15 kilometro kada oras. Uulan 30%.
Chance of a Thunderstorm
Bukas 05/24 60%
High 31° / Low 24°
Chance of a Thunderstorm
Kalat-kalat na pagkulog at pagkidlat. Mataas 31celsius. ENE na hangin sa 10 hanggang 15 kilometro kada oras. Uulan 60%.

Pusong MINERO (Quake Crises)

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