Ridge To Reef Inc.


Ridge To Reef, with office in Davao City, Philippines, is an environmental consulting and construction group with a reputation of providing expert and customized environmental and construction products and services. It is composed of specialists providing advice and support on a wide range of strategic and site-specific environmental and construction issues, to a diverse and growing base of business and governmental clients. Ridge To Reef, Inc. solves and simplifies complex environmental and construction requirements to help our clients implement programs or build things with a peace of mind. A multi-disciplined environmental consulting, and construction firm, Ridge To Reef serves a variety of industries and project types. Ridge To Reef is committed to delivering excellence to local government units, civil society organization, industries and financial institutions by maintaining the highest standards of quality for environmental consulting and construction services. We assist our clients in overcoming complicated construction and environmental-related situations and accomplishing their project objectives through awareness of environmental requirements, practical environmental knowledge and technology experience. Ridge To Reef customizes services to meet each client’s particular needs in the management, oversight and compliance requirements various projects and or programs. Ridge To Reef’s environmental consultants and construction team work personally with each client to ensure that clients meet their project goals and environmental and construction requirements. Our focus on clients and proactivity- and synergy-oriented results consistently earns us respect and allows us to complete each project effectively and within our client’s specific parameters. Our number one source for business is repeat clients and referrals from current and previous clients.


A respected and in-demand environmental consulting, design, construction and development firm.


We are commited to

  • Offer value added and cost-effective services to improve our clients performance.
  • Commit to personal growth within a stable and rewarding working environment.
  • Improve current environmental practices and identify new means, methods and technologies for industry professionals to follow.
  • Seek opportunities to work for worthy causes within our communities.
  • Implement conscience minded decisions to mitigate the environmental impact of contracted projects.
  • Create opportunities for our alliance partners to grow along with us.

core values

We value Pro-activity, Focus, and Synergy

Pro-activity – We are anticipatory, change-oriented and self-initiated individuals.

Focus – We think of ourseleves as a point of convergence for local government units, civil society organization and industries in the pursuit of environmental compliance and management.

Synergy – We promote effectiveness by working together.


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Tree Nursery Seedlings

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Planted Trees

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Carbon Sequestered CO2 Tons

In the mountains of Davao City, a prospering tribe exists, known as the Matigsalug Tribe. These tribes formerly lived along the riverbanks, as a way to get food for their daily lives. Through time, due to the inevitable changes in the environment and influx of various groups that have migrated, the Matigsalug Tribe has shifted their activity to farming and planting trees from getting resources from the river (e.g., fish).

One of the sites the tribe has been focusing on is Mundo Hill. It is the highest peak in Marilog and is considered to be an attraction to tourists because of the scenic view that it offers at the summit. But now, Mundo Hill is already not in its prevalent condition, unlike before. Hence, the initiative of the tribe to have it rehabilitated.

With this, Ridge to Reef, Inc. has initiated to take part and established a relationship with the Matisalug Tribe through supporting the tribe in Tree Growing Activity. Currently, Ridge to Reef has existing contracts with the tribe–Seedling Supply Contract and Tree Growing Contract. Wherein Ridge to Reef has allocated a budget for the tribe to produce and procurement of endemic planting materials for tree growing and other needed expenses for the reforestation activities, as well as providing technical assistance the tribe needs relevant to the movement. Then, the Matigsalug Tribe will take part in taking responsibility for establishing the tree nursery and other actions required for the tree growing project.

Further, being a company where traveling from one place to another goes along with its nature of work, the activity will also benefit Ridge to Reef in managing their carbon footprint through the tree growing activity which will sequester the carbon footprint that will be generated by the company.

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Because the environment deserves our care


Coastal Resource Management

Water Quality

Water Quality Management

Air Quality

Air Quality Management

Hazardous Waste

Hazardous Waste Management

Solid Waste Management

Solid Waste Management

Green House Gas

Green House Gas Inventory



Geo Hazards




Envi Imact Ass


Forest Forestland





For every shirt you avail, we will plant and nurture a tree for you for three years in our planting site at Mundo Hill, Marahan, Davao City.

We are growing 3500 trees in collaboration with the association of Matigsalug Council of Elders (MACOEMADDACI).
Because the environment deserves our care.



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Air Coastal Resource and Management

Description: Building efficient and effective community, Ridge to Reef engages in promoting conservation of coastal resource through integrated and adaptive approach of management. The team has been involved in utilizing evidence-base policy recommendation with its partner institution. Services includes, but not limited to:

Establishment of Marine Protected Area

The team have capable technical experts to conduct biophysical (coastal resource inventory) and social assessment to assess the viability of the site for the establishment of marine protected area. The team with its pools of experts can facilitate coastal resource management planning. Monitoring and evaluation are essential in every program being implemented to verify and further improve the system. Conduct of Management Effectiveness Tracking Tool (METT) is also being provided by the company.

Coastal Zoning

Coastal Delineation is crucial to resolved and avoid possible use conflict. Ridge to Reef provides services specifically to local government units to clearly define coastal resource utilization through crafting of coastal resource zonation.

Vulnerability Assessment in Coastal Communities

Building Climate-smart ecosystem, the conduct of vulnerability assessment is essential in linking environmental, social and economic data and this will be utilizing as strong policy recommendation in managing vulnerable coastal ecosystem. The company through its team of experts provides the assessment and directs local government units to establish mitigation opportunities adapting to climate change.

Integrated Coastal Resource Management

Building resilient and resistant community, ridge to reef approach of management engages long-term planning of coastal resources to increase productivity thereby alleviate income for coastal communities. As the company name stands, resource person provides technical expertise to package integrated coastal resource management from planning to monitoring and evaluation.


Ridge To Reef provides professional services to Water Quality Management (WQM) sector.
Our team have been involved in providing technical assistance in Preparing Wastewater Management (WWM) Strategic Plans, Developing Low Cost and Sustainable Wastewater Treatment Systems, and Preparation of Compliance Documents for Permitting Requirements. 

Our key WQM sector services include:

  1. Wastewater Management Strategic Plans
  • Preliminary/Mobilization activities;
  • Presentation of WWM Assessment Result;
  • Assessment results; objective setting, technical options Workshop;
  • Finalization of Strategic /Implementation plans; and
  • Identification of specific project
  1. Developing Low Cost and Sustainable Wastewater Treatment Systems
  • Preparation of engineering designs and cost estimates;
  • Technical assistance in the redesigns and revisions of existing wastewater treatment facilities (WWTF);
  • Technical assistance in the development of WWTF operations manual and training of staff;
  • Assist in project contracting;
  • Develop waste minimization and conservation initiatives for the users of the facilities;
  • For LGUs: Assist LGUs develop WWM projects and prepare technical and financial/business plans; Organize study tour of LGU officials to functional WWM facilities;
  1. Preparation of Documents needed for Permitting Requirements
  • Preparation of Wastewater Discharge Permit Applications (Old and New Sources);
  • Preparation of Engineering Reports; and
  • Preparation of Compliance Monitoring Reports (CMR) and Self-Monitoring Reports (SMR);


Ridge To Reef provides professional services to Air Quality Management (AQM) sector.   Our specialist team have been involved in providing technical assistance in designing Air Pollution Control Devices (APCDs), Air Dispersion Models, and Preparation of Compliance Documents for Permitting Requirements. 

Our key AQM sector services include:

  1. Design of APCDs
  • Gravity settling chambers (GSC);
  • Cyclones;
  • Filtration units – baghouse filters; and
  • Wet scrubbers.
  1. Preparation of Air Dispersion Models
  • Presents the background information that puts atmospheric dispersion models into a wider context and highlights the issues that should be considered before using them;
  • Provide review of the Gaussian-plume and advanced models that are commonly used for regulatory applications;
  • Provide review of the more specialized applications of dispersion modelling;
  • Provide information that should go into an atmospheric dispersion model to ensure good quality information is obtained;
  • Acquire reliable and representative meteorological input for air quality modelling purposes.
  • Presentation of modelling results clearly and simply, including the interpretation of modelling results.
  1. Preparation of Compliance Documents for Permitting Requirements
  • Preparation of Permit to Operate Air Sources (POAS) for old and new sources;
  • Preparation of Engineering Reports; and
  • Preparation of Compliance Monitoring Reports (CMR) and Self-Monitoring Reports (SMR);


Ridge To Reef provides professional services to Hazardous Waste Management (HWM) sector.   Our specialist team have been involved in providing technical assistance in the conduct of Hazard Risk Assessments and Preparation of Compliance Documents for Permitting Requirements. 

Our key HWM sector services include:

  1. Conduct of Hazard Risk Assessments
  • Hazard Identification and Analysis
  • Consequence Analysis
  • Accident Frequency Analysis
  • Risk Characterization
  • Risk Management Recommendations
  1. Establishment of safety management system and guides for emergency responses
  2. Compliance Documents for Permitting Requirements.
  • Registration of hazardous waste per type;
  • Securing transport permits; and
  • Securing transport, storage and disposal (TSD) facility permits.


Ridge To Reef provides professional services to Solid Waste Management (SWM) sector.   Our specialist team have been involved in providing technical assistance in the preparation of SWM capability workshops and preparation of Integrated Solid Waste Management Planning (ISWM) and design of disposal facilities.

Our key SWM sector services include:

  1. Preparation of ISWMP
  • Conduct SWM Orientation;
  • Conduct SWM Assessment and Waste Analysis and Characterization Study;
  • Facilitate the conduct of study tours/cross visit to successful SWM learning sites;
  • Conduct of workshop on ISWMP formulation – engineering component, IEC support, policy support and enforcement, etc.; and
  • Management and financing.
  1. Preparation of sanitary landfill (SLF) designs;
  • Prepare SLF categorized designs based on the WACS projection of each LGU; and
  • Prepare manual of operations and project profile.


Climate Change has been considered one of the significant adversities that progressing cities are experiencing due to the limited adequacy in addressing its various implications towards a country’s advancement.

Based on the United Nations Office for Disaster Risk Reduction (UNISDR), the Philippines is one of the top ten most vulnerable countries affected by climate change. Being geographically located in a calamity-prone area, the country, and its people have suffered from the damages these natural calamities have brought.

With the situation mentioned above, the Philippines has initiated to participate in international climate negotiations, determining the outgrowths of inaction in reducing carbon emissions internationally. Wherein the Philippines will primarily strategize the appropriation and mitigation through persevering low-carbon development and lessening energy emissions, transport, industry, agriculture, forestry, and waste sectors.

With this, Ridge to Reef can help the LGUs succeed in the timely and cost-effective implementation of the GHG Inventory. Ridge to Reef will support the staff of the LGUs and provide recommendations that are in the best interests of the GHG Inventory. Our project implementation approach will be fulfilled through the deployment of a highly qualified and experienced Team, the application of strong teamwork, sensitivity to the needs of the LGUs’ access to the home office support and resources of Ridge to Reef, close attention to detail, and high commitment to professionalism.

A pre-defined spreadsheet that encompasses all the categories of the emission sources will be used to encode the inventory data. The primary reference document for the conduct of this type of inventory is the IPCC Guidelines for Community-Level GHG inventories. In some cases, the Global Protocol for Community-Scale GHG Emissions (GPC) is also used.


Land surveying is identified as one of the significant activities needed to be done before any development through measuring and mapping the land, which is then utilized by the architects and engineers to comprehend better and make the best design of the facility or structures in the proposed site.


Ridge to Reef offers this kind of service by using the state-of-the-art surveying equipment like GNSS and RTK that are operated and facilitated by highly-competent surveyors and engineers.


The Philippines has a high rate of vulnerability to natural hazards because of the country’s geographical location in the Southeast Asia. Natural hazards such as typhoons, landslides, volcanic eruptions, and earthquakes are the major calamities that generate disruption to the country. Along with, prevalence and severity of such adversities are also caused by the reality of climate change wherein major livelihood activities in the Philippines are greatly affected.

Ridge to Reef is capable of conducting an Engineering Geology and Geohazard Assessments (EGGA) through using different methods in order describe the geology of the proposed project site as it relates to the suitability of the area to the planned land development. These includes preliminary literature research prior to field scoping, interpretation of available remotely-sensed data including available aerial photographs, satellite imagery and topographic map, and actual field inspections.


The basic steps in designing SLFs are the following:

  1. Establishing of the site boundary and topo-mapping at 1:500 scale with 1 meter contour interval
    1. The produced map should also indicate the land uses/owners of adjacent properties. With an NTP issued to the surveyor, this work should be completed within a month.
  1. Generation and analysis of basic design data to include
    a. WACS analysis and projections on the residual wastes
    b. Permeability (hydraulic conductivity) of the natural soil-on site.
    c. Borehole to determine soil formation
    d. Hydrometeorological studies on rainfall, flood occurrence, groundwater, and other related parameters of significance at the site
    e. Access to the site
    f. After use of the landfill site
  1. Drafting of the Site Development Plan

There are three major events in a conventional landfill operation which should be considered in site development planning- subsidence, gas generation, and leachate generation.

The other consideration in site development planning is the functionality of the landfill facility components such as the access gates, cells, internal road network for efficient flow of traffic within the facility, maintenance and operations buildings/equipment such as the guardhouse/weigh bridge, admin and maintenance building, utilities—water, electricity and communication, and the possible inclusions of SWM related facilities such as MRF with or without composting, and the THW facility. And majorly, the size requirement for the landfill area.


The permits required towards establishing SLFs are as follows

1. Letter of Endorsement

    1. Once the site is suitable, the LGU will request a LOE from the DENR for them to proceed with the next steps. This will open the gates for FS and later on the preparation of the OEE documents. The FS will have the general design of the SLF facility and this will be subjected to impact assessment
  1. ECC
    1. Is not technically a permit but a planning tool. Using a checklist the IEE document could be drafted by an in-house group (TWG) or with the help of a service provider. The IEE document is submitted to the Regional EMB for review and evaluation. An ECC is issued with conditionalities once the document is found to merit such an issuance. Else, the document will literate between the prepared and EMB until all requirements are satisfied. With the ECC the project can now proceed at full speed.
  2. The other permits are issued by the LGU—building permits for the construction of the facility, sanitation permits, among others.
  3. With the operation of the leachate collection and treatment component, the SLF operator needs to get a DISCHARGE PERMIT for the discharge of the treated leachate to a receiving body of water or land.


There are generally 3 phases of constructing a SLF Facility:


  1. With the contract, permits, and NTP, the contractor mobilizes its resources for the construction of the SLF
  2. Temporary construction camp is set-up inside the SLF site. The location of the camp should be strategically located for ease of transport of materials and workers. It should be located in a place which is not designated for the construction of any SLF components. The camp should be able to accommodate the full complement of key construction personnel, materials, and equipment.
  3. To maintain sanitation and prevent localized environmental degradation. Sanitary facilities will also be temporarily established.
  4. Basic utilities such as water supply, electric power and communications should also be set-up.


Based on the site development plan, design specifications and approved timetable, the contractor will commence with the actual construction of the facility with the following proposed sequence:

  1. Establishment of control gate and perimeter fence. Together with this activity is the delineation and initial planting of the vegetative buffer strip.
  2. Land grading and construction of internal road network from the gate of the remotest facility component. Land grading for the landfill cell
  3. Simultaneous or phase construction of facility components
    1. Landfill cells
    2. Leachate collection, storage, and treatment
    3. Storm drainage
    4. Guard house
    5. Admin and Maintenance building
    6. Water supply system
    7. Electric power system


Once the facility is completed, demobilization commences with the demolition of temporary structures and facilities. Clean-up of the site of any debris and proposer closure of temporary sanitary facilities and utilities like pit toilets and dug wells.


The following summarizes the operations of SLFs:

A. SLF Cell Operation

  1. Delivery inspection and data logging at the entrance gate. Access to the SLF facility requires the following inspection and validation:
    1. The accreditation of the delivery vehicle and the delivery crew.
    2. The source. Volume/weight of the wastes should be recorded.
    3. The quality of the waste is inspected
    4. All other pertinent data on delivery are properly logged
  1. Delivery of the wastes to the working face of the SLF is closely coordinated and directed by a SLF spotter. Proper sequencing of delivery vehicles that are queuing for delivery is a must to avoid accidents and traffic jams. The location of the working face is determined by the road access to the cell. The working face could start at the toe of the cell or at the heel.
  1. After delivery, the vehicles are cleaned at the wash bay before leaving the facility.

    B. Leachate Collection, Conveyance, and Storage/Treatment
  1. A network of perforated pipes laid at the bottom of the cell collects the leachate and convey this gravity to the leachate collection and storage tank which is located at the toe of the landfill. The tank is provided with a submersible pump operated on an auto cycle or manually to recirculate the leachate to the cell or the leachate is used to water plants in and around the SLF. The accumulated solids at the bottom of the tank is pumped out periodically using a sludge pump. Before the effluent out fall, a simple wooden flashboard with concrete guide is places to trap floating solids which are removed manually and disposed of properly of the SLF cell.
  2. The tank provides some treatment like settling of heavy carryover particles, exposure to the UV Radiation from the Sun and stabilization of trace organizes by microorganisms growing in the wastewater.
  1. Emissions Control
  1. To mitigate further emissions, the leachate collection pipes can be extended up to the top of the side slopes of the cell with an elbow-cap with screen. This will make the SLF semi-aerobic and this will allow partial treatment of the leachate while it is still in the cell.



This should be monitored periodically to avoid ponding in some filled sections of the facility. Ponding will induce more rainfall infiltrating and percolating into the waste pile hence leachate generation is increased. Ponded sections could also become breeding places for pathogenic microorganisms. The softening of the cell section with ponded water could start the breaching of the compacted soil cover.


Monitoring of the quality of the groundwater from a monitoring well downstream should be dine on a quarterly basis while the treated leachate and the receiving body of water should be monitored for pH and TSS on a weekly basis. A combination of pH, TDS, and TSS electronic analyzer could be used for this activity


The side slopes of the rising mound of covered waste in SLF should be monitored for stability. Any damage should be repaired immediately to reduce danger of collapse or severe erosion


Ridge To Reef provides professional services to Environmental Impact sector.   Our specialist team have been involved in providing technical assistance in the application for ECC (i.e. Environmental Performance Report and Management Plan and new applications)

Our key EIS sector services include:

  1. Primary and secondary data gathering (i.e. baseline environmental conditions for air and water quality);
  2. Site visit and assessment;
  3. Documentations
  • Integration of all data and assessments;
  • Preparation of project write up;
  • Accomplishment of Project Environmental Monitoring and Audit Prioritization Scheme (PEMAPS);
  • Notarization of ECC application documents and PEMAPS;
  1. Finalization and reproduction of Environmental Impact Study and Initial Environmental Examination Report (IEER);
  2. Submission of final ECC application documents to EMB-DENR XI;
  3. Payment of the corresponding application fees; and
  4. Follow-up of ECC release.



Ridge To Reef provides professional services to Forest and Forestland Management (FFM) sector.   Our specialist team have been involved in providing technical assistance in the preparation of FFM capability building workshops and preparation of Forest Land Use Plan (FLUP).

Our key FFM sector services include:

Preparation of FLUP

  • Workshop on the FLUP Process and Data Gathering Tools;
  • Conduct of strategic planning workshops (i.e. vision, mission, goals and objectives); and
  • Finalization of FLUP


  1. Organize an assessment team composed of a Liaison Officer, Civil Engineer, Architect and Environmental Planner.
  2. Primary and secondary data gathering (i.e. baseline environmental traffic conditions, review of Environmental Impact Statement/Initial Environmental Examination, Environmental Compliance Certificate, etc.);
  3. Site visit and assessment (i.e. conduct of traffic impact analysis such as Intersection/Arterial Capacity Analysis, and Assessment of Infrastructure);
  4. Preparation of traffic impact mitigation write up (i.e. Identify mitigation measures and traffic management plans);
  5. Documentations
  • Integration of all data and assessments;
  • Preparation of Traffic Impact Assessment (TIA)write up; and
  • Concurrence of TIA team on the output.
  1. Presentation of output to proponent.
  2. Finalization and reproduction of TIA; and
  3. Submission of output to proponents.