Section 5.05

Site grading, including any fill or berm placement, must maintain natural drainage patterns.

Blasting within LOD is subject to Section 6.157 of the FSM.

Community water supply systems are required for all subdivisions of 15 or more lots approved after February 17, 2010, except for subdivisions in which each lot of the subdivision contains 10 or more acres of land.

The following or similar language must be contained in all deeds of conveyance and on all subdivision plats and Site Plans applicable to land in the LOD: 'In addition to the requirements of any underlying zoning district(s) and any other applicable overlay districts, this property also is subject to the requirements of the Limestone Overlay District (LOD).'

Disturbed areas must be limited to what is necessary to locate the use, and any disturbed areas that are not covered by paving, stone, or other solid materials must be revegetated.

Irrigation systems are prohibited unless the water for such system is supplied from a source that is not dependent on groundwater, such as, but not limited to, cisterns and stormwater management ponds.

Storage of hazardous substances in an aggregate amount greater than 55 gallons (or the dry weight equivalent) on site at any one time

Land disturbing activities are not permitted within 20 feet of a Karst/Sensitive Environmental Feature;

Surface water runoff must not be redirected or concentrated to enter a Karst/Sensitive Environmental Feature identified in Table 5.05-1.

No land disturbing activity is permitted on soil mapping units 59 or 88 except for local access roads and driveways when no alternatives exist.

Structures are prohibited in all areas where a Geophysical Study indicates that potential subsidence may occur that would cause property damage, physical injury, or harm to the public or future residents, unless there are no alternative locations within a given lot of record, and a subsequent Geotechnical Report indicates that such potential harm can be mitigated.

Public sewer or community wastewater systems designed in accordance with applicable Loudoun Water standards are required for all subdivision of 15 or more lots approved after February 17, 2010, except for subdivisions in which each lot of the subdivision contains 10 or more acres of land

The above limits of land disturbing activity are reduced by 50% in the following soil conditions: 27, 50, 52, 55 and 89.

The Karst/Sensitive Environmental Feature Setback may be reduced by up to 50% if the Geophysical Study concludes that the risks of collapse and groundwater contamination are non-existent or insignificant

Underground solution channels within 45 feet of the surface;

setback a minimum of 25 feet from each Karst/Sensitive Environmental Feature.