Ana səhifə

Federal Republic of Nigeria Federal Ministry of Agriculture and Rural Development Staple Crop Processing Zones Support Project (scpz)


Yüklə 11.44 Mb.
səhifə12/40
tarix26.06.2016
ölçüsü11.44 Mb.
1   ...   8   9   10   11   12   13   14   15   ...   40


3.5 Comparison between Nigeria EIA Guidelines and World Bank EA Guidelines


The Nigerian Environmental Impact Assessment Act (No. 86 of 1992) requires that all development projects be screened for their potential impacts. Based on the screening, a full, partial, or no Environmental impact assessment may be required. Guidelines issued in 1995 direct the screening process.

According to these guidelines:



  • Category I projects require a full EIA. Such projects include large-scale activities like agriculture development on 500 hectares or more, land reclamation of 50 hectares or more, fisheries that establish land based aquaculture of 50 hectares or more, forestry projects that converts more than 50 hectares, etc.

  • Category II projects require only a partial EIA that focuses on mitigation and environmental planning measures, unless the project is located near an environmentally sensitive area, in which case a full EIA is required.

  • Category III projects are those considered to have “essentially beneficial impacts” on the environment and for which the Federal Ministry of the Environment will prepare an Environmental Impact Statement, but which do not need an EIA.

With regard to EA, the World Bank categorized projects into:



  • Category A: These projects are those whose impacts are sensitive, diverse, and unprecedentedly, felt beyond the immediate project environment and are potentially irreversible over the long term. Such projects require full EA. The proposed project

  • Category B: These are projects that involve site specific and immediate project environment interactions. Specifically, they do not significantly affect human populations, alter natural systems and resources, consume much natural resources (e.g., ground water) or have adverse impacts that are not sensitive, diverse, unprecedented and are mostly reversible. Category B projects will require partial EA, and environmental and social action plans.

  • Category C: These are projects that are mostly benign in nature and are likely to have minimal or no adverse environmental impacts. Beyond screening, no further EA action is required, although some may require environmental and social action plans.

  • Category FI:  A proposed project is classified as Category FI, if it provides funds through a financial intermediary to subprojects that may result in adverse environmental impacts. Here the financial intermediate is responsible for setting up an Environmental and Social Management Framework that supervises the establishment of EIAs in line with the World Bank System.

The World Bank Categorization (A, B, & C) corresponds in principle with the Nigeria EIA requirements of Category I, II and III as both use the level of impacts associated with a given project as trigger for the required environmental assessment. However, in the event of divergence between the two with regard to investments within the SCPZ and ABIR, the more stringent safeguard policy shall take precedence.


Thus, for the SCPZ and ABIR in Kogi State which is considered to be a category 1 project, the Nigeria’s EIA requirements and World Bank operational procedures both apply and require:

  • Early consideration of environmental and social issues (starting at the screening stage);

  • Identification and early consultation with stakeholders;

  • Prevention of adverse impacts through the consideration of feasible alternatives; and

  • Incorporation of mitigation measures into planning and (engineering) design.


3.6 Adequacy of the existing Institutional Framework for Addressing Potential Environmental & Social Issues in the SCPZ and ABIR in Kogi State


It is generally agreed that despite significant efforts at Federal, State and Local Government Level, the implementation of the existing environmental and social legislation is wanting as the capability in particular at state and local level to assure the sustainable management of natural resources and the enforcement of rules and regulations leaves room for improvement. The SCPZ Support Project therefore provides and opportunity for a significant investment into the enhancement of capabilities as well as the acquisition of equipment to enable the implementation of the provisions outlined in the ESMF and subsequent emanating instrument (ESIA/ESMP).

CHAPTER FOUR DESCRIPTION OF BIOPHYSICAL AND SOCIO-ECONOMIC ENVIRONMENT



4.1 Location

The Kogi State SCPZ and ABIR is located in the old Kabba region in Kogi State of North Central Nigeria and covers parts of five Local Governmental Areas (LGA): Adavi,Ijumu, KabbaBunu, Lokoja and Okehi(Fig 4.1).


Figure 4.1: Kogi State showing the affected LGAs



4.2 Physical Environment




4.2.1 Climate


The climate in the Kogi State SCPZ and ABIR is classified as ‘tropical savannah’ with two clearly marked seasons; wet (between April and October) and dry (between November and March). It is located within the humid tropical climatic region with rainfall being the single most important element for defining the climatic seasons. Average annual rainfall in the SCPZ and ABIR is about 1,140 mm, with the highest monthly rainfall occurring in September (on average, around 210 mm) and the lowest in December (on average, less than 3 mm).

Table 4.1 Annual Rainfall in Lokoja (2002-2011).

Year

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

Rainfall Amount (mm)

1276

923.6

1335

939.4

1684

1501

1312

1632

1071

931.5

Source: Nigeria Meteorological Agency (NIMET)

Average temperatures remain fairly consistent throughout the year (fig 4.2), and these range from around 26oC in July to 32oC in March, with a pronounced dry season extending from November through to March. During this time, the climate is dominated by the dry north-eastern wind (‘Harmattan’).



Figure 4.2: Temperature Characteristics


The relative humidity value is high and correlates with the rainfall. Overall, an average of 75.08% and 57.42% are recorded at 10:00hrs and 16:00hrs local time. Further assessment shows that the highest values are recorded in the early mornings. The lowest value of 68% in the region is recorded in February. During the dry season, values between 65% and 75% are common, while 90% humidity can be recorded in the raining season.

Figure 4.3: Characteristics of Relative Humidity within the Project Area

The predominant wind direction in the dry season is in north eastern directions, while in the wet season, the wind generally blows in a south-western direction. The wind speed is generally 2.4-4.5 knot.

The intensity of the sunshine lasts longer in the dry season ranging between 7-9 hrs/day, while it is between 5-7 hrs/day in the wet season. The mean annual sunshine hour in the area is about 1,740 hours, with mean monthly values between 46 and 182 hours in July and January respectively (Fig 4.4).



Figure 4.4: Monthly Daily Sunshine Pattern in the Study Area



4.2.2 Air Quality


Generally, air quality in the SCPZ and ABIR complies with the standards of the Federal Ministry of Environment (FMEnv) and of the WHO. Existing data suggests low concentration of carbon monoxide (CO), hydrogen sulphide (H2S), sulphur dioxide (SO2), nitrogen oxide (NO2), dust, suspended particulate matter (SPM), volatile organic carbon (CH4) and total hydrocarbon (THC). This may be explained by the low population density and absence of industrial development with the exception of Lokoja town, where the cement factory in Obajana has elevated dust levels along the main roads in the region.
4.2.3 Geology

Kogi state has two main rock types, namely, basement complex rocks of the Precambrian age in the western half of the state and extending slightly eastwards beyond the lower Niger valley and the older sedimentary rocks in the eastern half.

The various sedimentary rock groups extend along the banks of Rivers Niger and Benue and southeastwards through Enugu and Anambra states, to join the Udi Plateau.
4.2.4 Relief and Drainage

The physical features of the State are largely mountainous. It covers very large part of the State, most of which are rocky and of undulating high lands to average height of about 1,400m above sea level.The land rises from a about 300 metres along the NigerBenue conflute, to the heights of between 300 and 600 metres above sea level in the uplands. Agbaja Plateau, which ranges from 335 to 366 metres above sea level, and the much higher OkoroAgbo hills at Ogidi in ljumu LGA are some of the predominant to landforms of the state. The state is drained by the Niger and Benue rivers and their tributaries.


The confluence of the Niger and Benue rivers which could be viewed from the top of Mount Patti is located within the state. of The Benue river is navigable as far as Garua in the rainy season floods, but up to Makurdi in Benue State in the dry season (lloeje, 1979). The Mabolo (Anambra) is the biggest river in Igalaland. Mabolo, Okura, Ubele and Ofu rivers run off the DekinaAnkpaOturkpo watershed. Osome ra Falls at Kilometre Four on OkeneAjaokuta Road, of Ofejiji Falls in OkuraOlafia and Egeneja Warm id Spring in Bassa Local Government Area are other drainage features (Benue State, 1985). Areas such as Ajaokuta, Okene. Kabba and Lokoja are generally hilly and rocky, while areas such as Ankpa. Dekina. Ofu are fairly plain. The confluence of rivers Niger and Benue created alluvial fertile soil, which is very goal for crop production. Other smaller Fivers cover most parts of the State and empty into the Niger and Benue rivers.
The bigger rivers have wide flood plains such as the portion of the lower Niger in Kogi state, which is more than 1,600 metres wide at Lokoja, while the in small streams have narrow valleys. The general rain is undulating and characterised by high hills, Jos plateaus and numerous inselbergs and elongated a ridges.

4.2.5 Soils Characteristics


The flood plains of the Niger and Benue river valleys in Kogi State have the hydromorphic soils which contain a mixture of coarse alluvial and colluvial deposits (Areola, 1985). The alluvial soils along the valleys of the rivers are sandy, while the adjoining laterite soils are deeply weathered and grey or reddish in colour, sticky and permeable.
Available data suggests that six soil types can be found within the SCPZ and ABIR: lithosols, cambisols, luvisols, eroded soils, alluvial soils and arenosols. The soils are mostly coarse textured, ranging from loamy to sandy loam in the surface horizons and from sandy loam to clay in the subsurface horizon. The soil pH ranges from 5.3 to 7.0 and the organic matter content is generally low (0.46 to 1.54%), which reduces soil fertility. The Cation Exchange Capacity is generally low from within 1.44-16.07 meq/100g in the surface horizon and 1.61-24.18meq/100g at the subsurface horizons, which means that the soil has low potentials for retaining plant nutrients. During the dry season, the soils reduce in terms of plant nutrients, water holding capacity, moisture content, fertility etc and become generally more acidic.

4.2.6 Hydrology


The Kogi State SCPZ and ABIR is traversed from west to east by a network of seasonal (non-perennial) streams which converge to form the Oinye River, which further flows to the Obajana cement plant area where it is impounded for water supply purposes. Downstream of this dam, the river flows in a south-eastern direction as River Adankolo. To the extreme north of the ABIR one finds the River Epu, which flows in an eastward direction and empties into the River Niger. The extreme south of the ABIR is demarcated by the Osara River, which is regulated through a dam (Osara Dam) and could serve as alternative source of water supply to the Kogi Stage ABIR and SCPZ.

Based upon regional information there are indication of two types of aquiferin in the ABIR: an unconfined aquifer in the weathered Precambrian basement complex rocks with a water table approximately 20 to 30 m below the surface and an overburden aquifer in the younger sedimentary rocks and alluvium along the riverbeds. The overburden aquifer would typically consist of 2 to 3 layer sequences made up of sands, gravel, silts and clays. The groundwater resources are relatively undeveloped for community water supply purposes as the local settlement rely on 1 or 2 boreholes in the lower unconfined basement aquifer. They were constructed in recent years by the Kogi State Community and Social Development Agency (KGCSDA) with financial support from the World Bank. Other communities source their water from shallow, hand-dug wells, the semi-perennial Oinye river system and/or rainwater harvesting.



Apart from turbidity, studies have shown that other parameters for measuring water quality were found to be much lower than the Federal Ministry of Environments’ limits. These parameters include total dissolved solids (TDS), chemical oxygen demand (COD), total alkanity, total hardness, chloride, phosphates, sulphates and nitrates and macro and trace minerals. Staphylococcus aureus and Pseudomonas fluorescens are the most abundant micro-organisms in the surface waters.

1   ...   8   9   10   11   12   13   14   15   ...   40


Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©atelim.com 2016
rəhbərliyinə müraciət