Mount Majura Solar Farm - the National Capital Authority

Figure 4.8 Majura Parkway EIS mapGiven that the installation of the ground mounted solar panels has such a small footprint, the proposedimpacts relating to construction is minimal and is not comprehensive and extensive. The Proposed Worksdo not require extensive earthworks or ground disturbance.As the NGH Report highlights, a small circular area named MV167 lies within RB707 with a moderatesignificance rating. To err on the side of protection, the Proponent commits to excluding MV167 andproviding fencing around MV167 to ensure this feature isn’t disturbed.4.7Soil and ErosionThe PV array would be supported by steel posts driven or screwed into the ground or concrete gravityfoundations resting on (or shallowly below) the surface, resulting in little direct disturbance to soils andvegetation. The tracks at the PV array site would generally be constructed over low gradient and low reliefterrain and would not create unacceptable risks to soil and water values at the site.Construction and decommissioning impacts are expected to be temporary and localised. With best practice,these works are not likely to represent unacceptable risks to soil values at the subject site.The runoff from the panel rows would cause a concentration of rain-splash and potential soil erosion in astrip below the lower edge of the rows during heavy rainfall events. The erosion risk would be affected by:The type nature, density, vigour and persistence of vegetation coverPhysical and chemical properties of the soilSoil structural condition, infiltration rate and capacitySoil organic matter contentFrequency and intensity of storm eventsTopography (particularly aspect, slope degree and slope continuity, existing flow and erosionlines).If concentrated rain-splash and runoff below the panel rows result in localised erosion, treatment of thesplash zone may include hardening with gravel or organic mulch, reseeding and covering with an open49Mount Majura Solar Farm – Works Approval Submission