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period exceeding fourteen (14) calendar days. Stabilization must be completed within a period of time determined by the VSMP Authority. In arid, semiarid, and drought-stricken areas where initiating vegetative stabilization measures immediately is infeasible, alternative stabilization measures must be employed as specified by the VSMP Authority; and 9. Utilize outlet structures that withdraw water from the surface, unless infeasible, when discharging from basins and impoundments. (b) The SWPP shall be amended by the operator whenever there is a change in design, construction, operation, or maintenance that has a significant effect on the discharge of pollutants to state waters which is not addressed by the existing SWPPP. (c) The SWPPP must be maintained by the operator at a central location onsite. If an onsite location is unavailable, notice of the SWPPP's location must be posted near the main entrance at the construction site. Operators shall make the SWPPP available for public review in accordance with Section II of the general permit, either electronically or in hard copy. Sec. 31.2-6. Stormwater management plan; contents of plans. (a) The Stormwater Management Plan, required in Section 31.2-4, must apply the Stormwater management technical criteria set forth in Section 31.2-9 to the entire land-disturbing activity. Individual lots I new residential, commercial, or industrial developments shall not be considered separate land-disturbing activities. A stormwater management plan that is approved for residential, commercial, or industrial subdivision shall govern the development of the individual parcels, including those parcels developed under subsequent owners. The stormwater management plan shall consider all sources of surface runoff and all sources of subsurface and groundwater flows converted to subsurface runoff, and include the following information: (1) Information on the type and location of stormwater discharges, information on the features to which Stormwater is being discharged including surface waters, and the pre-development and post-development drainage areas; (2) Contact information including the name, address, and telephone number of the owner and the tax reference map number and parcel number of the property or properties affected; (3) A narrative that includes a description of current site conditions and final site conditions;