(PESIA) Weg naar Zee 2D Seismic - Staatsolie

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P-all consultants Staatsolie Maatschappij Suriname N.V. PESIA Weg naar Zee 2D Seismic 2012 With Mitigation Low Small Medium term 5.4 GEO(HYDRO)LOGY, GEOMORPHOLOGY AND SOILS Geo(hydro)logy (operation phase) 72 Medium Low Minor Negative Impacts on geo(hydro)logy could arise from exploration activities. These (potential) impacts comprise groundwater pollution. The potential impact is not known. But with Staatsolie General Field Instructions, in place these impacts are regarded to be negligible at most, and no additional mitigation measures are necessary. Geomorphology and soils (construction and closure phase) The impact on land and soil will be limited to the use of small portions of land for airboat and swamp carrier trails and for drill sites. Wetland Area In the Wetland Area vegetation clearing and preparation of the trails will result in the removal of peat, if present, and some of the upper layer of the clay, loam or sand soil. Apart from this disturbance of the soil profile and also some soil compaction will occur due to the weight and vibration of the used machinery. Also traveling of the swamp carrier will contribute to soil compaction. The overall impacts during the construction and operation phase will be minor negative given that the land is currently not used, or a small portion of land is being used and the fact that the impacts are, to a large degree, temporary. One mitigation measure is recommended. • do not create unnecessary deep trails, thus limiting soil disturbance to a minimum Dry land Area Also in the Dry land Area some degree of soil disturbance will occur, when the sites are prepared for explosions. Earth moving and soil compaction will result in a reduced soil quality at the explosion sites. As such the impact to the soil is considered to be minor, because the explosion sites are relatively small (about 1500 m²) and the impact is reversible on the short term. In order to minimize the impact some measures are recommended below. But the impact will be significant when the explosion site is located on a highly productive horticulture soil in the area. The standing crop will be destroyed. Soil pollution may occur when the drilling waste of the explosion holes is released on-site. But it will only affect a small area and it will be very temporary, so that the overall impact is
P-all consultants Staatsolie Maatschappij Suriname N.V. PESIA Weg naar Zee 2D Seismic 2012 considered to be minor negative. Nevertheless some recommendations for prevention / minimization are presented. • select the least productive soils in the area of the seismic trails • limit earth moving and soil disturbance to the minimum • restore the site upon termination of the drilling and explosion • compensate owners for damages With these measures the impacts will be negligible both for the wetlands and the dryland areas. Table 23: Impact on geomorphology, geohydrology and soil for wet and dry land areas. Impact on: geomorphology, geohydrology and soil for wet and dryland areas Without Mitigation With mitigation measures Magnitude/ Intensity /Size Geographical scale Duration Probability Severity Overall significance Low Small medium Medium Low Minor negative Low Small Short Low Low Negligible 5.5 VISUAL RESOURCES, TOPOGRAPHY AND LANDSCAPE The project area is characterized by a low relief and has no prominent landscape features. The project will not involve essential alterations of landscape and topography. However, seismic trails in the Wetland Area will be visible from the air and clearing within the project area will surely draw the attention of people flying over the area. It is considered essential that the footprint of the project is limited to the minimum. A potentially moderate negative impact could arise and some prevention and mitigation measures are recommended that will result in a minor negative impact. • plan trails and explosion sites in such a way that a minimum of forest clearing is required • use only the initial trails and do not widen the trails during operation • where possible: use the already existing trails and canal (fish hole) trajectory Table 24 Impact on visual resources Impact on: visual resources Without Mitigation With Mitigation Magnitude/ Intensity /Size Geographical scale Medium Small Long term Low Small Short term No impact to the visual resources will occur in the Dry land Area. Duration Probability Severity Overall significance 73 High medium Moderate negative Medium Low Minor negative
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(PESIA) Weg naar Zee 2D Seismic - Staatsolie

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