Environmental impact assessment Essay


Itogon Water District is proposed to the shortage in water along municipality. However, this positive intention will be accompanied by impending hazards for the ecosystem. An evaluation on various parameters about Itogon, Benguet is presented.

Land Distribution

Itogon, the gold haven of Cordillera, is located at 16°22′N 120°41′E at the southeast end of the Benguet. Comprising a land area of 16.24% of the province’s total area, Itogon sums up to 4497300 meters squared. (Philippine Statistics Office).It is surrounded by several municipalities like the city of Baguio on its west, La Trinidad on its north-west bound, San Manuel and San Nicolas under south on the province of Pangasinan.Given below is a table depicting the percentage and land area the municipality encompasses based on the slope of the terrain. Almost 75% of the land domains above 50% slope and the rest cover the topography of the land.


  • Above 50% 37150.00 74.60;
  • 30-50% 9163.20 18.40;
  • 18-30% 1842.60 3.70;
  • 8-18% 597.60 1.20;
  • 3-8% 199.20 0.4;
  • 0-8% 448.20 0.9;
  • Waterbodies 398.40 0.8.

Natural Environment

“Itogon is set at the southern end of the Central Cordillera Mountain Range and forms into an irregularly shaped area oriented along north-south direction. It's mountainous and comprised of valleys as well as slopes of certain angles.” (Province of Itogon)

Archaeological & Historic Sites

As the Philippine Commission Act No.33 was enacted on 1946, the town of Itogon slowly emerged as the government built military camps. This eventually progressed as the First Civil Government along the country. Throughout the years, the municipality silently creep to its advancement. Known for Binga Hydroelectric Plant, a part of the hydroelectric power plants operated by SN-Aboitiz. It has a capacity of 140 MW and supplies electricity to most of the Cordillera Region.Itogon were also part of towns that highlights and promotes mining as part of their livelihood. With its rich-mineral lands, various large mining companies are operating and includes Benguet Corporation, Philex Mining Company, Atok Big Wedge Mining Company (Now Atok Gold), Itogon Suyoc Mining Company.

Socio-Economic Environment

As forecasted by Philippine Statistics Authority (2015), given a land area of 449.73 square kilometers, 59",820 residents total the current population of Itogon. Different ethnicities compose this number and 60% of which are Ibalois and the rest are Kankanaey such other ethnicities.

Barangay Citizenry

2015 2010

  • Ampucao 18.6% 11",118 10",450;
  • Dalupirip 5.1% 3",058 2",578;
  • Gumatdang 3.6% 2",163 1",895;
  • Loacan 12.9% 7",740 7",714;
  • Poblacion (Central) 6.1% 3",663 3",267;
  • Tinongdan 6.0% 3",596 4",216;
  • Tuding 13.5% 8",082 7",703;
  • Ucab 15.7% 9",410 7",870;
  • Virac 18.4% 10",990 10",267;
  • TOTAL 59",820 55",960.
Above tabulates the barangays all over their municipality with their citizenry that accompanies each for 2015 as well as 2010. Vivid change in citizenry results a trend with a minimal value. A more detailed illustration for the projected increase of population within the years is discussed in Table 8.3.

Population census of Itogon

  • 1918 3",167 +36.74%;
  • 1939 35",179 +12.15%;
  • 1948 16",970 −7.78%;
  • 1960 32",742 +5.63%;
  • 1970 39",834 +1.98%;
  • 1975 41",081 +0.62%;
  • 1980 47",605 +2.99%;
  • 1990 61",773 +2.64%;
  • 1995 47",781 −4.70%;
  • 2000 46",705 −0.49%;
  • 2007 48",778 +0.60%;
  • 2010 55",960 +5.13%;
  • 2015 59",820 +1.28%.
Source: Philippine Statistics Authority


With its topography along Cordilleran mountain ranges, its climate is largely affected by the altitude. It gives a chill and cold climate within the area and the seasons are classified as either wet or dry. Dry season is predominant within the months of December unto March while the rest of the year is under the wet season. The average monthly rainfall ranges from 17.0mm for February to 1",432.9mm for August.

Noise Quality

“Pumps add another noise source leading to higher noise levels unless noise control measures are installed.” (Gerges) Under some specifications applied to industries, the noise level for a water treatment plant must range at a value of 92 dB up to 104 dB in the morning and from 42 dB to 56 dB for the evening. “Noise usually comes from pumps as well as motors which operate in facility.” (United States Environmental Protection Agency) Upon provision on Environment Protection Act 2002 as well as Wastewater Authority Act 2000, monitoring regarding allowable noise for a plant is implemented.

Water Quality

Several parameters are emphasized upon analysis of the quality of a water sample. Turbidity, bacteriological test, total dissolved solids, hardness, and pH are expected to meet the standards set by the Environmental Protection Agency.

Noise Control

To limit the noise produced, the following actions shall be followed:
  • part of the Proper Protective Equipment or PPEs of an operator is an earplug or earmuffs to protect one’s eardrum;
  • applying soundproofing to some areas where certain equipment contributes to noise pollution;
  • using technology such as variable frequency drives (VFD). This technology can adjust the speed of most rotating devices including pumps giving it an average of 6 dB reduction.

Waste Disposal

Sludge is the main waste that will be produced in water treatment. Sludge will be kept in sludge storage tanks and will be delivered and disposed of in a landfill by a third party company.

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