HomeMy WebLinkAboutSUB200900025 Review Comments Groundwater Assessment 2009-02-27Tier II Groundwater Assessment
TMP 6 — 28B
Application Number: SUB200900025 James Byrom- Family Division
Groundwater Reviewer: J. Rubinstein
Date: 27 February 2009
Description: 3 divisions — 4 lots
Water Quantity
The Albemarle County Database shows six wells within half a mile of the
lot. The wells range from 65 to 545 feet in depth with a median depth of
220 feet. The well yields range from 2 to 20 gallons per minute (gpm) with
a median yield of 6 gpm. The median yield for the entire county is 7 gpm.
Water Quality
As shown on the Virginia Department of Environmental Quality (DEQ) GIS
website, there is no leaking underground storage tank sites (LUST) within
two thousand feet of the parcel!
Buffers
According to the county GIS site, there are required buffers along the stream
on the parcel's northern border and along the tributary that runs from
southeast corner of the property to the stream.2 The GIS site shows a buffer
across the entire southeast border. This differs from the plat which only
shows a portion of the southeast border in the required buffer.
The parcel is in the Buck Mountain Creek watershed which serves the public
water supply at South Fork of the Rivanna Reservoir.
1 http: // gisweb. deq .virginia.gov /deqims /viewer.htm ?SERVICE= VA_DEQ
2 http: / /gisweb.albemarle.org/
Site Description
According to the Virginia Department of Mineral Resources 1993 Map, the
bedrock beneath the parcel is in the charnockite gneiss of the Blue Ridge
Basement Complex (Yc).
In a groundwater assessment done for the Albemarle County, ENSAT
Corporation divided the county into `hydrologic units'. Below is ENSAT's
description of the hydrologic unit which contains the parcel:
The Blue Ridge West unit lies primarily on the steep eastern slopes of the
Blue Ridge Mountain and is dominated by the Myersville and Parker
soils, and to a lesser extent the Chester. Slopes can be found to range
from 2 -60 %. These soils are residual in nature. The Myersville soils are
derived from weathered volcanic metamorphic rocks (greenstone) and the
Parker and Chester soil series are derived from weathered granite and
granite gneiss. These soils are considered to be relatively deep and well
drained.