(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 Recommended preventive and mitigation measures regarding water pollution on dry land include: • do not drill explosion holes close to water reservoirs or ponds • if still some water pollution occurs: compensate for any damage due to reduced water quality • clean up any fuel, oil or grease pollution as soon as possible See table 28: Impact on water quality in wetland and dry land 5.8 VEGETATION Vegetation clearing The Eastern Wayambo Swamp will be reached using the seismic/drilling trail crossing the Western Wayambo Swamp up to the Van Dijk Canal that will be crossed. East of the Van Dijk Canal, the vegetation consists of open herbaceous swamp, swamp scrub and swamp wood. Such vegetations will have to be removed for the construction of explosion sites. Swamp excavators will have to clear peat and vegetation of: • seismic trails within that area will be on the lines as marked in Figure 1. • airboat trails will connect seismic lines location with a nearby landing stage on dryland; these trails will be created for transport of people (also in case of emergency), goods and services to the seismic sites All together these trails will have a length of about 51.3 km. Using the 2 m wide clearing and a new (minimum) area of about 10 ha will have to be cleared from vegetation and peat. The Eastern Wayambo Swamp (Wetland Area) measures 110 km² or 11,000 ha. In case10 ha are cleared, about 0.1 % of the natural ecosystems will be destroyed. The negative impact to the herbaceous swamp, swamp scrub and swamp wood is considered to be minor and on forests moderate. Prevention and mitigation measures recommended are: • limit damage to herbaceous vegetation by avoiding to establish unnecessary wide or deep trails or by the creation of parallel running trails • avoid areas with swamp wood as much as possible and use as much as possible open swamp for transportation purposes, even if this means traveling over a somewhat larger distance • where possible: use the already existing canal (fish hole) trajectories 78
P-all consultants Staatsolie Maatschappij Suriname N.V. PESIA Weg naar Zee 2D Seismic 2012 Impact of: vegetation clearing on forests Without Mitigation With Mitigation Impact of: vegetation clearing Without Mitigation With Mitigation Implementing these measures will reduce the impacts to minor negative on forests and to negligible on swamp vegetation. Table 29 Impact of: vegetation clearing on forests Magnitude/ Intensity /Size Geographical scale Medium Small Long term Low Small Short term Duration Probability Severity Overall significance Table 30 Impact of: vegetation clearing on swamp vegetation Magnitude/ Intensity /Size Geographical scale Low Small Short term Low Small Short term Vegetation and peat fires 79 High medium Moderate negative Medium Low Minor negative Duration Probability Severity Overall significance Medium Low Minor negative Low Low Negligible Vegetation fires may be a relatively common phenomenon in the Eastern Wayambo swamp. So close to inhabited areas it is to be expected that much land will be cleared for purposes of impoundments, agriculture and housing projects; land users will try to deforest wetlands as much as possible by fire, which is the cheapest method. Also oil exploration activities and carelessness of Staatsolie employees may cause fires, especially in the herbaceous swamps with the alwayspresent mass of dead dry grass between fresh grass. Vegetation fires may have catastrophic effects on the environment, may destroy equipment, and may threaten the life of people working in the area. During extremely dry seasons, when peat layers dry out, grass fires may become peat fires that destroy all present ecosystems, flora and fauna over a large area. The damage to the vegetation and flora due to fire is regarded as being of major negative significance. Preventive and mitigation measures regarding vegetation and peat fires include: • for operations: develop and implement strict fire control procedures and measures • implement a fire risk awareness program for Staatsolie personnel and contractors working in the project area
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(PESIA) Weg naar Zee 2D Seismic - Staatsolie

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