Client project details
IBM/Park Tower/Toll Brothers
EGGI was contracted to develop groundwater resources from fractured crystalline bedrock in Loudoun County of northern Virginia. Substantial water supplies were required to meet the irrigation water needs of a proposed golf course at a large scale development project. Sub-areas within the project site were identified (during a Phase I investigation) as favorable for groundwater development based on Emery & Garrett Groundwater Inc.’s (EGGI’s) remote sensing analyses, synthesis of bedrock fracture fabric data, and a series hydrogeological investigations. As a result, four favorable sub-zones for groundwater development were identified.
The project proceeded to Phase II of the investigation where detailed geophysical surveys were carried out within those four selected sub-areas. The result of that Phase II investigation led to the selection of a series of exploratory test well drilling targets. Four test wells were drilled (Phase III) and three of these wells yielded sufficient water to be considered as viable candidates for use as production wells. These three wells were converted to larger diameter production wells (Phase IV) and tested for yield and quality (Phase V). The results of groundwater exploration and development program led to the development of a collective ground water source that could produce 350 gpm (500,000 gal per day) in accordance to a managed groundwater useplan. In this case, the wells could be used to produce 500,000 gpd for 3.5 days a week….which was more than sufficient to meet the on-site water supply needs of the proposed golf course. This golf course has now been successfully irrigated and in operation for more than 15 years.
The results of groundwater exploration and development program led to the development of a collective ground water source that could produce 350 gpm (500,000 gal per day) in accordance to a managed groundwater useplan."