HomeMy WebLinkAboutSUB200800229 Review Comments No Submittal Type Selected 2008-12-05Tier II Groundwater Assessment
TMP 55 -15A
Application Number: SUB200800229
(Loose) Parcel X — Two Lot Subdivision
Groundwater Reviewer: J. Rubinstein
Date: 8 December 2008
Description: 1 division — 2 lots
Water Quantity
The Albemarle County Database shows eleven wells within half a mile of
the lot. The wells range from 83 to 425 feet in depth with a median depth of
165 feet. The well yields range from 1 to 65 gallons per minute with a
median yield of 15 gallons per minute. The median yield for the county is 7
gallons per minute.
Water Quality
As shown on the Virginia Department of Environmental Quality (DEQ) GIS
websitel, there is no leaking underground storage tank sites (LUST) within
two thousand feet of the parcel.
Buffers
According to the county GIS site, there is a required buffer (not shown on
the plat) in the southwest corner of Lot 3 along perennial stream.2 The
parcel is in the Mechunk Creek watershed which does not serve a public
water supply.
Site Description
According to the Virginia Department of Mineral Resources 1993 Map, the
bedrock beneath the parcel is in the metasiltstone (Ccas), phyllite and schist
of the Chandler Formation (Cca).
1 http: // gisweb. deq .virginia.gov /deqims /viewer.htm ?SERVICE= VA_DEQ
2 http: / /gisweb.albemarle.org/
In a groundwater assessment done for the Albemarle County, ENSAT
Corporation divided the county into `hydrologic units'. Below is ENSAT's
description of the Chandler Unit which contains most of the parcel:
Soils underlying the area are dominated by the Manteo and Nason
series. Manteo soils are shallow and somewhat excessively drained.
The Manteo soils are formed in the weathered products of sericitic
schist/phyllite. The Nason soils are formed on uplands and range in
slope from 2-25%
The unit containing the northern portion of Lot 2 is described below:
The Blue Ridge East unit overlies "greenstone" and represents the eastern
limb of the Blue Ridge Anticlinorium. The area is characterized by the
presence of a prominent ridge which rises and trends generally northeast
within the otherwise rolling piedmont landscape. Portions of this ridge
are known locally as Green Mountain, Carters Mountain and the
Southwest Mountains. This area is dominated by the Rabun and
Myersville soils and to a lesser extent, the Catoctin. The Rabun soil
series is deep and well drained and like the Myersville soil series is
formed from weathered greenstone. The Catoctin soil series is
considered to be moderately deep and well drained and is also formed
from weathered greenstone.