Birdhill Meadows Subdivision in Jefferson Orchards

Background

What is happening

The Issues

Why is there increased risk? (click to read the full detail)

This development is located in a karst area of the county with a high sinkhole rate and such high bedrock permeability that it there are no surface streams. Currently all water that falls to the ground on this property during normal rainfalls immediately infiltrates into the groundwater.
 
This development is designed at urban level density. This density is allowed by the zoning but this has real consequences for the water resources in the surrounding rural zone and beyond.
 
While this development is in the Residential Growth Zone, which allows urban level density, it is nearly completely surrounded by the rural zone. All the residences and businesses (except Rockwool) in the surrounding area rely on well water for all uses including drinking.
 
This juxtaposition of urban level housing with rural and village properties on wells poses a water quality issue for the surrounding well users. The urban density community creates more stormwater pollution because there are more sources of pollutants (cars, people, houses) per acre than in a less dense development. The stormwater from this development is expected to have increased levels of petroleum contamination for example.
 
In higher population areas stormwater is required to be treated before it is discharged to protect the downstream user of the water. This is what is required in area’s designated MS4 (Municipal Separate Storm Sewer System). This high density development should be treated the same to protect groundwater users.
 
Most MS4 discharge into surface waters like rivers and that water is treated again before it is used for drinking. However, here the water will infiltrate with little treatment (a few bioretention basins) into the groundwater, which will be used by all surrounding properties in the county untreated. So, it is even more necessary that the stormwater from this location be treated before it is allowed to infiltrate.
 
In this case, it is not clear if all of the water from the development is being treated and the treatment of the water is insufficiently especially for times of increased rainfall. It is also not clear if the stormwater structures are appropriately designed for this area of advanced karst terrain.  
 
The Karst Mitigation Plan is insufficient. While the Karst mitigation plan has some good features that protect the houses that are being built, it fails to protect the groundwater quality long term. All of the mitigation that has been added is to prevent damage to homes being built not to protect Groundwater quality.

Public Comment - APPLICATION FOR COVERAGE UNDER THE GENERAL WEST VIRGINIA NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM WATER POLLUTION CONTROL PERMIT NO. WV0115924 - Jefferson County - Lennar

Dear Mr. Shirley,

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