HomeMy WebLinkAboutSUB200800252 Review Comments Groundwater Assessment 2008-10-22Tier II Groundwater Assessment
TMP 97 - 24A
Application Number: SUB200800252 David Metcalf (Lot A) -Rural Division
Groundwater Reviewer: J. Rubinstein
Date: 22 October 2008
Description: 1 division - 2 lots
Water Quantity
The Albemarle County Database shows four wells within half a mile of the
lot. The wells range from 145 to 305 feet in depth with a mean depth of 223
feet. The well yields range from 2 to 12 gallons per minute with a mean
yield of 10 gallons per minute. The median well yield for the County is 7
gallons per minute.
Water Quality
As shown on the Virginia Department of Environmental Quality (DEQ) GIS
website, Lot A and a southeastern portion of the residue is within 2000 feet
of a leaking underground storage tank sites.' Therefore Section 500 through
503 of Albemarle County Code requires that the well be tested for the
volatile organic compounds Benzene, Toluene, Ethylbenzene and Xylenes
before a building permit can be issued for Lot A or the portion of the residue
covered by the 2000 foot polygon. Z
Buffers
According to the county GIS site and as shown on the plat, there is a
required buffer along the southwestern boundary of Lot A.3
The parcel is in the watershed for the Hardware River. This watershed does
not contribute to the public water supply.
1 http: // gisweb. deq .virginia.gov /deqims /viewer.htm ?SERVICE= VA_DEQ
2 http: / /www.albemarle.org /department. asp ?department= ctyatty &relpage =2784
3 http: / /gisweb.albemarle.org/
Site Description
According to the Virginia Department of Mineral Resources 1993 Map, the
bedrock beneath the parcel is in the gneiss of the Blue Ridge Basement
Complex (Ybg).
In a groundwater assessment done for the Albemarle County, ENSAT
Corporation divided the county into `hydrologic units'. Below is ENSAT's
description of the unit containing the parcel:
The Ragged Mountain unit is characterized by mountainous terrain
located in the southwestern portion of the County and is underlain by
the metagranitic rocks of the Blue Ridge Basement Complex. The
soils in the area are dominated by the Chester, Hayesville, Ashe, and
Parker soil series. These soils are derived from weathered granite and
granite gneiss and are deep and excessively well drained. These soils
range in slope from 2 -45% with some slopes up to 60 percent in the
Parker soils.