HomeMy WebLinkAboutSUB200800164 Review Comments Groundwater Assessment 2008-07-16Tier II Groundwater Assessment
TMP 84 - 27A
Application Number: SUB200800164 Clausen Division - Rural Division
Groundwater Reviewer: J. Rubinstein
Date: 16 July 2008
Description: 1 division - 2 lots
Water Quantity
The Albemarle County Database shows 14 wells within half a mile of the
lot. The wells range from 61 to 305 feet in depth with a mean depth of 208
feet. The well yields range from zero to 100 gallons per minute with a mean
yield of 15 gallons per minute. The well on Parcel 2A is listed as having a
depth of 155 feet with a yield of 10 gallons per minute.
Water Quality
As shown on the Virginia Department of Environmental Quality (DEQ) GIS
website, the parcel within 2000 feet of a leaking underground storage tank
sites (LUST).' 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. a
Buffers
According to the county GIS site and as shown on the plat, there is a
required buffer along the southern boundary of Parcel 2B.3
The site is in the watershed for the Upper Mechums River which feeds the
public water supply of the South Fork of the Rivanna Reservoir.
1 http: // gisweb. deq .virginia.gov /deqims /viewer.htm ?SERVICE= VA_DEQ
2 for the volatile organic compounds Benzene, Toluene, Ethylbenzene and Xylenes
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 (Ybg) and charnokite gneiss (Yc)
of the Blue Ridge Basement Complex
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.