HomeMy WebLinkAboutSUB200800280 Review Comments Groundwater Assessment 2008-11-17Tier II Groundwater Assessment
TMP 75 - 59 and TMP 75 - 59A
Application Number: SUB200800280 William Hurtt Properties - Family Div
Groundwater Reviewer: J. Rubinstein
Date: 17 November 2008
Description: 1 boundary line adjustment - 1 division - 2 lots
Water Quantity
The Albemarle County Database shows ten wells within half a mile of the
lot. The wells range from 45 to 300 feet in depth with a median depth of
202 feet. The well yields range from 0 to 20 gallons per minute with a mean
yield of 5.5 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, all of TMP 75 — 59A and the northern half of TMP 75 — 59 which
includes the proposed Lot B are all within 2000 feet of a leaking
underground storage tank sites.' Therefore Section 500 through 503 of
Albemarle County Code requires that the well in this area be tested for the
volatile organic compounds; Benzene, Toluene, Ethylbenzene and Xylenes
before a building permit can be issued. 2
Buffers
According to the county GIS site, there is a required buffer along an
intermittent creek on the southwestern boundary of the parcels, including a
small section that runs along the western boundary of Lot B and is not
shown on the plat.3
The parcel is in the watershed for the Moores Creek. This watershed does
not contribute to the public water supply.
' 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 parcels is in the gneiss of the Blue Ridge Basement
Complex (Ybg). At the southern tip of TMP 75 — 59 is some fanglomerate
of the Lynchburg Group (Zlf).
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.