HomeMy WebLinkAboutSUB201900176 Assessment - Groundwater 2020-05-12REVISED
Tier III Groundwater Assessment:
Albemarle County Parcel #45-59M
HydroGeo
ENVIRONMENTAL
for
Bella Signature Homes, LLC
Charlottesville, VA 22902-6348
434-960-3085
prepared by
HydroGeo Environmental, LLC
418 East Main St.
Charlottesville, Virginia 22902
HydroGeo Project #18-374
Issued: January 29, 2019
Revised: May 12, 2020
6 .:�tAuflf UFG �
ERXESTW1MLEY IV
No. 280 1974 '
�ntFSSi(RS°���
APPROVED
by the Albemarle County
Community Development Department
Date 5/27/2020
File SUB201900176
Ernest Beasley, MS, CPG
Geologist
Revised Tier/H Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
TABLE OF CONTENTS
Key Findings (Revisions to initial report noted as bold, underlined, AND italicized text)
1.0 Introduction..................................................................................................................
2.0 Site Overview................................................................................................................
3.0 Subject Property/Vicinity Description........................................................................
3.1 Site Description...............................................................................................................
3.2 Geologic Observations....................................................................................................
3.3 Nearby Features of Interest............................................................................................
4.0 Hydrogeologic Assessment and Review...................................................................
4.1 Hydrogeologic Setting.....................................................................................................
4.2 Site Geology, Geomorphology, and Soils.......................................................................
4.3 Hydrogeologic Unit..........................................................................................................
4.4 Groundwater Flow, Recharge, and Discharge................................................................
4.5 Existing Well Records.....................................................................................................
4.6 Groundwater Sensitivity and Contaminant Threats........................................................
4.7 Water Budget Calculations...............................................................................................
5.0 Groundwater Management Plan.................................................................................
5.1 Contingency Plan............................................................................................................
6.0 Assessment of Well Drilling and Testing..................................................................
7.0 Conclusions..................................................................................................................
rIr�l 1o=c
Figure 1: Site Location
Figure 2: Site Layout Map
Figure 3: Geologic Map
Figure 4: Inferred Well and Septic Locations within 1000' of Site
Figure 5: Inferred Groundwater Flow Map (shallow)
Figure 6: Inferred Groundwater Flow Map (deep)
Figure 7: Watershed Boundary
Figure 8: Fracture Trace Map with Test Well Location
ATTACHMENTS
Attachment A: Sketch of Proposed Subdivision Revised Plats with Test Well Location
Attachment B: NRCS Soils Mapping
Attachment C: VADEQ VEGIS Map
Attachment D: Water Budget Calculations
Attachment E: Engineering Review Comments
Attachment F: Commonwealth of Virainia Uniform Water Well Completion Report
Attachment G: Terms and Conditions
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2
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3
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Revised Tier /H Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
Key Findings (Revisions to initial report noted as bold, underlined, AND italicized text)
Albemarle County hydrogeologic unit: Piedmont Foothills (Hydrogeologic Unit III)
Groundwater availability zone: Class 2 (medium relative groundwater availability)
Hydrogeologic conditions favorable to proposed use? Yes. See attached calculations for pre- and post -
development groundwater surplus estimates. Precise well yields will remain unknown prior to drilling.
Virginia Department of Health (VDH) did not provided well completion reports for nearby properties (FOIA
request submitted 12/4/18 and followed up 1/9/19) — however, a review of the Virginia Department of
Environmental Quality's (VADEQ) database of available well records in Albemarle County returned one (1)
well with a yield of 2 gpm within the required 1000-foot search radius. The average well yield for 17 wells
within a 0.5-mile radius of the property boundary, and in the same hydrogeologic unit as the Site, is 12.9
gpm.
Site within groundwater sensitivity zone? No. Review of the VADEQ Virginia Environmental Geographic
Information Systems (VEGIS) viewer and Albemarle County GIS did not identify any open pollution
complaint cases within the required 1000-foot search radius.
Groundwater flow pattern: Groundwater recharge areas include vegetated land onsite and undeveloped,
permeable areas located upgradient of the Site; groundwater discharge areas occur along the southwestern
edge of the Site, along the intermittent streambed of the unnamed tributary to Schroeder Branch, a tributary
to the Rivanna River South Fork. General localized groundwater flow in the vicinity of the Site is assumed
to be influenced by topography and likely follows a net southwest- to southeast direction toward the
unnamed tributary to Schroeder Branch along the southwestern edge of the parcel and then flows southeast
to Schroeder Branch.
Contamination threats on record: One (1) VPDES outfall was located within the required 1000-foot search
radius from the parcel boundaries. Due to its location approximately 950 feet away and downgradient of
the Site, and the knowledge that registered VPDES permitted discharge is regulated and monitored by state
agencies, HydroGeo does not consider this to be likely contamination threat, nor a reason to place the Site
within a groundwater sensitivity zone.
Additional contaminant threats observed in field reconnaissance? No additional contaminant threats were
observed at the time of field reconnaissance.
Impacts of proposed use on existing users: Proposed groundwater use should be adequate for the
development's needs without unreasonably affecting users offsite.
BMP recommendations: Maintain vegetated stream buffer as much as possible during development;
implement runoff -neutral site plans insofar as practicable.
Recommendations:
• Implement fracture trace analysis and consider resistivity imaging to locate optimal well drilling
targets. (Fracture trace analysis was completed by HydroGeo personnel using available
LiDAR data. The test well does not appear to be drilled along a prominent fracture trace
lineament.)
• Install groundwater well(s) prior to commencement of other onsite construction activities to ensure
that the Site can produce adequate groundwater for the proposed use. (A test well, installed to
a depth of 225 feet below ground surface on Lot 1, had a blown yield of 20 _gallons per minute
after a one (1) hour test. The Site appears to lie in an area capable of producing adequate
groundwater for the proposed use based on test well results.)
• Abide by Virginia Department of Health standards in developing a new water source onsite.
• We recommend that the County approve this proposed development as contaminant potential
appears to be low, and hydrogeologic conditions are favorable for proposed use.
Revised Tier /H Groundwater Assessment HydroGeo Project #18-374
Albemarle Countv Parcel #45-59M Mav 12. 2020
1.0 Introduction
This Tier III Groundwater Assessment Report (Tier III) was prepared by HydroGeo Environmental
(HydroGeo) for Bella Signature Homes, LLC, who proposes to use groundwater supply for a proposed
residential development in Albemarle County, Virginia. The purpose of this report is to provide an
assessment of the potential groundwater resources in the vicinity of the proposed development. This Tier
III Report was completed in accordance with the requirements outlined in Section 1.2.D of the Albemarle
County Design Standards Manual for Engineering.
2.0 Site Overview
The proposed development is located approximately 3.25 miles north of the city of Charlottesville (Figure
1). The property is comprised of a single parcel identified as Albemarle County Parcel #45-59M (the "Site").
The parcel has no known physical address and is bordered to the northwest by Earlysville Road. The Site
and surrounding parcels are zoned rural with land use consisting of primarily residential and open/forested
undeveloped land. Site elevation ranges from approximately 490 feet above mean sea level (amsl) to 580
feet amsl. The Site is located in the Rivanna River watershed with intermittent Schroeder Branch, a tributary
to the south fork of the Rivanna River, located approximately 750 feet to the southeast (Figure 2).
Five (5) residential lots ranging from 2.353- to 6.181 acres are planned on the Site. The lots will be served
by private wells and individual onsite subsurface drainfields. The Virginia Department of Health (VDH)
requires a minimum yield of 3 gallons per minute (gpm) for a private residential supply well. A copy of the
proposed development is included as Attachment A Revised Plats (April 2020).
3.0 Subject Property/Vicinity Description
HydroGeo personnel conducted a Site reconnaissance visit on January 10, 2019. The Site visit included
geologic observations and visual inspections for hydrologic features and potential contaminant sources.
3.1 Site Description
The Site comprises approximately 18.29 acres, which appears to be entirely undeveloped wooded land.
No existing onsite wells were observed during Site reconnaissance. Site topography generally slopes to
the south- to southwest, along the northern flank of a northwest/southeast trending swale. A small portion
of the Site, the northwestern edge, slopes to the east-southeast. Surface water drainage and shallow
groundwater flow likely follow Site topography, discharging along the unnamed intermittently flowing
tributary to Schroeder Branch River along the western/southwestern edge of the parcel. The mapped
intermittent tributary was not flowing at the time of Site reconnaissance, but areas of saturated ground along
the stream channel and channel degradation from previously flowing water were observed.
3.2 Geologic Observations
A single, massive, outcrop was observed near the southern corner of the parcel during field activities. Strike
and dip of the outcrop were recorded as 100°E and 60°S. respectively. The presence of metamorphosed
outcrops and boulders observed onsite supports existing geologic mapping which indicates that the Site is
underlain by Blue Ridge Basement rocks including porphyoblastic biotite-plagioclase augen gneiss and the
Robertson River suite. (Figure 3).
3.3 Nearby Features of Interest
Precise residential well and septic locations on nearby parcels were difficult to pinpoint during site
reconnaissance due to access limitations so for the purposes of this assessment, most well and septic
locations are inferred based on the presence of homes. No contaminant threats were identified during
field reconnaissance activities. Stormwater runoff channels from offsite were observed in several locations along the
northeastern property boundary. See Figure 4 for nearby features of interest identified during site
reconnaissance, records review, and GIS mapping activities.
4.0 Hydrogeologic Assessment and Review
4.1 Hydrogeologic Setting
The Site lies within the Blue Ridge geologic Province, a region dominated by fractured bedrock aquifer
Revised Tier 111 Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
systems, consisting of a mantle of soils and saprolite (or overburden) overlying fractured and faulted
igneous and metamorphic bedrock. Groundwater in the Blue Ridge province of Virginia is stored in the
porous overburden zone. Unlike overburden, the bedrock in the Blue Ridge province has minimal primary
porosity, so deeper groundwater flow relies largely on the secondary porosity provided by the bedrock
fracture network:
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(Heath, 1980)
Standard practice for development of water supply wells involves drilling into water bearing zones in the
fractured bedrock and sealing off the overburden with a solid well casing. Thus, the ultimate performance
of individual water wells in the Blue Ridge Province typically depends on the borehole encountering
sufficiently interconnected bedrock fractures:
LeGrand, 1988)
A dry hole results if a well is drilled into bedrock with insufficient fracturing. Fracture occurrence and density
depend on a number of factors including specific location, rock type, and site -specific geologic conditions.
Because groundwater occurs in discrete fractured zones, it is not unusual to find variability in yields for
wells in close proximity to each other. Because the regolith provides groundwater storage, a thicker
mantle of overburden usually suggests more favorable conditions for sustainable long-term groundwater
withdrawals.
4.2 Site Geology, Geomorphology, and Soils
According to 1:500,000-scale state geologic mapping (Virginia Division of Mineral Resources, 1993), Site
bedrock consists of Proterozoic age Robertson River igneous suite underlying the southeastern half of
the parcel and Porphyoblastic biotite-plagioclase augen gneiss underlying the northwestern half. At the
Site, this crystalline igneous and metamorphic bedrock is overlain by moderately deep- to deep soils that
have weathered in place from the underlying bedrock ("residuum"). According to Natural Resource
Conservation Service (NRCS) soils mapping, soils underlying the Site consist primarily of Louisburg and
Wedowee series, with lenses of the Pacolet and Hayesville series mapped on the northwestern edge of
3
s
(Heath, 1980)
Standard practice for development of water supply wells involves drilling into water bearing zones in the
fractured bedrock and sealing off the overburden with a solid well casing. Thus, the ultimate performance
of individual water wells in the Blue Ridge Province typically depends on the borehole encountering
sufficiently interconnected bedrock fractures:
LeGrand, 1988)
A dry hole results if a well is drilled into bedrock with insufficient fracturing. Fracture occurrence and density
depend on a number of factors including specific location, rock type, and site -specific geologic conditions.
Because groundwater occurs in discrete fractured zones, it is not unusual to find variability in yields for
wells in close proximity to each other. Because the regolith provides groundwater storage, a thicker
mantle of overburden usually suggests more favorable conditions for sustainable long-term groundwater
withdrawals.
4.2 Site Geology, Geomorphology, and Soils
According to 1:500,000-scale state geologic mapping (Virginia Division of Mineral Resources, 1993), Site
bedrock consists of Proterozoic age Robertson River igneous suite underlying the southeastern half of
the parcel and Porphyoblastic biotite-plagioclase augen gneiss underlying the northwestern half. At the
Site, this crystalline igneous and metamorphic bedrock is overlain by moderately deep- to deep soils that
have weathered in place from the underlying bedrock ("residuum"). According to Natural Resource
Conservation Service (NRCS) soils mapping, soils underlying the Site consist primarily of Louisburg and
Wedowee series, with lenses of the Pacolet and Hayesville series mapped on the northwestern edge of
3
Revised Tier 111 Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
the parcel. These soils are all reported to be deep- to very deep, well drained, residual soils derived from
igneous and metamorphic bedrock. See Attachment B for NRCS soils mapping.
4.3 Hydrogeologic Unit
Certain geologic landscapes in Albemarle County are known to possess more favorable characteristics
for the development of groundwater resources than others. A 2003 study completed for Albemarle County
ranked different hydrogeologic units across the County based on their potential as groundwater
resources. Factors such as degree of bedrock fracturing, overburden thickness, and saprolite
permeability were considered in determining the relative groundwater availability potential of different
units.
According to the Albemarle County Hydrogeologic Assessment Summary (2003), the site is located within
Hydrogeologic Unit III (Piedmont Foothills), a unit with medium relative availability compared to other landscapes in
Albemarle County. Landscapes are dominated by rolling uplands of the Piedmont to relatively steep slopes of the eastern Blue
Ridge foothills. Soils in this hydrogeologic unit are residual, or weathered in place, and formed from the
weathered granites and metagranites of the Blue Ridge Basement complex. State geologic mapping, NRCS
soils mapping, and onsite observations for this work support this interpretation of Site hydrogeology.
4.4 Groundwater Flow, Recharge, and Discharge
The general groundwater flow direction in the vicinity of the Site is assumed to be influenced by
topography. Shallow, localized groundwater flow within the overburden is interpreted to follow a pattern
similar to that shown on Figure 5. Groundwater flow on a more regional scale, more representative of
net flow through the deeper bedrock fracture network, is interpreted to follow a pattern similar to that
shown on Figure 6. Based on this assessment, general localized groundwater flow in the vicinity of
the Site likely follows a net southwest- to southeast direction toward the unnamed intermittent
tributary to Schroeder Branch along the southwestern edge of the parcel and then flows southeast
to Schroeder Branch.
Groundwater recharge areas include vegetated land onsite and undeveloped, permeable areas located
upgradient of the Site; groundwater discharge areas occur along the southwestern edge of the Site, along
the intermittent streambed of the unnamed tributary to Schroeder Branch, a tributary to the Rivanna River
South Fork.
4.5 Existing Well Records
On December 4, 2018, and again on January 9, 2019, HydroGeo submitted a request to the Environmental
Health (EH) division of the Virginia Department of Health for well and septic records from the Site and from
parcels located up to 1000-feet beyond property lines as outlined in Section 1.2.D of the Albemarle County
Design Standards Manual for Engineering. VDH did not respond to HydroGeo's request for records.
HydroGeo reviewed the VADEQs database of available well records for Albemarle County. A search within
a 1000-foot radius beyond property lines returned only one (1) well record. The search was expanded to a
0.5-mile radius beyond property lines in order to obtain a more significant amount of well records, and
seventeen (17) well records were returned. A summary of available information is included as Table 1
below. The well listed in BOLD is the only one recorded within the 1000-foot search radius.
Table 1: Summary of Available Well Records
Parcel ID
Total Depth (ft)
Depth to Bedrock (ft)
Yield (gpm)Water
Bearing Zone (ft)
45-50B
205
55
8
N/A
45-50136
205
20
15
N/A
45-50137
205
56
4
N/A
45-53/54A
305
10
8
N/A
45-56/57
200
28
8
N/A
45-58
460
68
7
N/A
45-59E1
305
26
2
N/A
45-63A
265
20
6
N/A
45F-10
180
52
15
N/A
45F-11
200
52
10
N/A
Revised Tier 111 Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
45-49D 1
260
50
35
200-220
45-49J
310
67
10
140-142
45-49J
405
25
0
45-50
45-118
305
N/A
50
N/A
45A-01-3
205
67
10
N/A
45E-01-OD-10
125
33
6
100-101
45E-01-OF-4
275
50
25
60-61/150-151
These wells are believed to be located within the same hydrogeologic unit as the Site based on NRCS soils
mapping and Virginia Division of Mineral Resources geologic mapping. The yield of the well within 1000-
feet of the property boundary is 2 gpm. The average yield of wells within a 0.5-mile radius of the property
is 12.9 gpm. It must be noted that records for dry wells and septic records in the Site vicinity were not
available for review.
4.6 Groundwater Sensitivity and Contaminant Threats
Based on a review of Virginia Department of Environmental Quality (VADEQ) Virginia Environmental
Geographic Information Systems (VEGIS) viewer, Albemarle County GIS and observations made during
field reconnaissance, the Site does not appear to be located in an area of groundwater sensitivity.
One (1) Virginia Pollution Discharge Elimination System (VPDES) permitted outfall was identified within the
required 1,000-foot search radius from property boundaries. It is located approximately 950 feet due east
of the eastern most corner of the Site. The VPDES outfall (ID# VAG840204002) is registered with the
VADEQ to the Luck Stone Rivanna Plant, under a Non -Metallic Mineral Mining General Permit. A general
permit holder is described by the VADEQ as an entity that discharges "typically small volumes of low
potency pollutants."
HydroGeo does not consider the Site to be located in an area of groundwater sensitivity due to the presence
of a VPDES outfall within the 1000-foot search radius, as the outfall is registered and potentially discharged
pollutants are monitored by a state agency. The outfall is also located downgradient of the Site. Attachment
C presents a graphic depiction of VPDES outfall locations in the immediate Site vicinity. VEGIS also
displays current and historic petroleum release cases, registered tank facilities within the Site vicinity,
though none fall within the required search radius.
4.7 Water Budget Calculations
Quantitative analysis helps evaluate the impact to local groundwater resources due to the creation of
impervious surfaces and increased groundwater pumping as a result of Site development. See Attachment
D for calculations relating to current groundwater recharge to Site and pre- and post -development estimated
groundwater withdrawals.
Based on these calculations the proposed usage of groundwater post -development, overall recharge post -
development will be more than adequate to supply groundwater usage without long-term degradation of
groundwater resources.
5.0 Groundwater Management Plan
The proposed development will attempt to minimize degradation of groundwater recharge, and
groundwater and surface water quality, by preserving existing vegetation where practicable and by
implementing stormwater strategies to minimize offsite runoff. The development plan includes standard
stormwater Best Management Practices and sediment and erosion control measures.
5.1 Contingency Plan
Actual yield of future onsite supply wells cannot be known until wells are drilled and tested. Based on
actual yield of newly drilled wells, a groundwater pumping and management plan may be developed to
meet the demands of the proposed onsite water use. If a newly drilled well does not produce sufficient
yield to meet the user's demands, a supplemental well may be drilled to augment the user's onsite
groundwater supply.
New Site wells must be constructed to meet Virginia Department of Health (VDH) standards and wellhead
Revised Tier/// Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M May 12, 2020
protection measures should be implemented to prevent the wells from becoming contaminated in the
event of a future spill or release.
6.0 Assessment of Well Drilling and Testing
New onsite wells will be permitted by the Environmental Health division of the Charlottesville -Albemarle
Health Department. VDH regulations require a minimum yield of 3 gpm for private water supply wells. It
must also be noted that the Albemarle County Building Office requires the installation of groundwater
wells prior to issuance of building permits.
Based on this study, the Site lies in an area capable of producing groundwater yields sufficient to meet
the demands of the proposed Site development; however, the actual yields of future onsite supply wells
cannot be known until the wells are drilled and properly tested.
The Albemarle County Department of Community Development Engineering Division
recommended a test well be located in an area with low, if not the lowest, potential well yield
based on initial review of this Tier 111 Groundwater Report. (See Attachment E, Comment 5a). It
should be noted that HydroGeo was not involved with test well location selection, drillin_q, lo_pping,
or testin_q; however, a post-drillin_g fracture trace analysis was completed by HydroGeo personnel
using available LiDAR data to identify lineaments on the _ground surface that could indicate zones
of high bedrock fracture density. The test well does not appear to be located along a prominent
fracture trace lineament (Fiaure 8).
The test well was installed in the vicinity of the proposed well site location on Lot 1 on March 31,
2020 by Matheny Well Drilling and Pump Service, Inc. (Attachment A). Test well geographic
coordinates are 38007'02.37'W, 78°28'17.50"W (WGS 1984) — collected by HydroGeo via
differential GPS on April 29, 2020. A 10-inch borehole was drilled to a total depth of 225 ft, via an
air rotary drill ri_g. The depth to bedrock was recorded as 30 feet below __ground surface (bps) and
PVC casing was set from a depth of +2 feet- to 30 feet bgs. Hydrated bentonite grout was placed
from 0- to 20 feet b_qs. The driller's log noted a water bearing zone from 148- to 150 feet bgs. The
complete Commonwealth of Virginia Uniform Water Well Completion Report is included as
Attachment F_
A one -hour duration, blown yield test performed by Matheny Well Drilling and Pump Service, Inc.
resulted in a yield of 20 gallons per minute (gpm). A consistent 20 qpm yield is likely not
sustainable for this well location, however it is a good indication that the Site appears to lie in an
area capable of producing adequate groundwater for the proposed use.
7.0 Conclusions
This Tier III Groundwater Assessment was prepared on behalf of Bella Signature Homes, LLC by HydroGeo
Environmental for the proposed development on an approximately 18.29-acre Site in Albemarle County
identified as Parcels #45-59M. The Site is located in the Class 2 (medium) ranked hydrogeologic unit for
relative groundwater availability in Albemarle County based on the Albemarle County Hydrogeologic
Assessment Summary Report (2003).
VDH regulations require a minimum yield of 3 gpm for private residential water supply wells. Based on this
study, and the 20 gpm blown yield of a test well drilled on Lot 1, the Site aquifer appears to have the
potential of producing sufficient yields for the proposed use as long as water -bearing fractures are
encountered during drilling. The estimated collective groundwater withdrawals would not be expected to
interfere with the performance of offsite wells.
Finally, the Site is not located in a groundwater sensitivity zone.
Figures
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NORTH Scale:
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Albemarle County Parcel
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Earlysville, Virginia 22936
HydroGeo Environmental, LLC
418 East Main St. Charlottesville, VA
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Date:
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BASEMAP: Google Earth 10/19/2017
ELEVATION DATA: Chesapeake Bay UDAR Project - July 2016
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Attachment A:
Revised Plats with Test Well Location
(updated April 2020)
O wer's Appmvaf
41ep -ftB 9 or dedfcattan of the follosing de nribed
,&.d, TM 4559M aoatalnfag 18.276 esrrca rs with &e
fr oomseat of end is ce wi* the desire of
the und.,-9-d ownors, pr its, -wd br &ees,
ifany.
8&temetrt Of Title
V-faadshownraro,"" '6pBelfaSAW&-N-,LW
ie DE SO461S9 & to fhe ,dent of my�o a mrr6 �l1c
rcgaire®esd+eff dieB a&&
Co fyofAD-de, PA
CountyAoprorrtl
Dc g. Aft tAlbeme J (:minty Deco
Bc ff. S-¢ant- Lr.a LLC DAen
-%Luke 1fltelurger
tuvanna
Bryea J. Qenrbcrs Date '� .��', �'\
NofaryPu6lic - �,4.s - - ti eR�/f +`L •/.
it
7hcfargoiag fnstr-unrent rvnv ackne%d9.d Adore me '� LJ 1. l :H
-Iris .l .•of 2039 4`�y; �•• � Q
!f '
29
Notes:
1- This boundaryis based on a current field surveywith limes established i.aw- physical evidence and recorded deeds and plats- An inconsistency found in the
research of common boundaries of adjoining tracts is as noted per l)POR Reg's Sect 18 VAC 10-20-370:
The eastern bo rndary of this tract was established as a straight lino per the plat recorded in DB 587 378- The plat recorded in DB 2619 Pgs- 123 & 129
shows a break in that line at the iron found at 62-OZ SE of the intersection of the nor& boundary of Lot 3 with the east boundary of Olivia Court. The lines
along this boundary to the irons found are hereby agreed to as witnessed by the followirrg signatures:
Bella.5iyratu.-cDow , LLC Dot A-d eyftninefy Date IV eyfGriocly
-0o Luke IGteD-g- - TM 45 Par. 59M TM45 P _ 59EZ 79f 45 Par 59E1
Notalyl'rrblrc NotaryP hk NotaryAhk
7}ref g�g;ns6,�ent was aokoonfedged before we 7hcfo9-9 mrtr—t was s*k owledged before me Meforg-9-sh-arrtw ackno idged before we
fhe dayof 2019 da depor 2019 dzi, dQy. a019
Myoonuuk-ion erpires . Myoanrmission exphes . Myoom...r«:on asp"res
2- This parcel is in Flood Zone X (..W& the 0.2% chance annual flood plain) per Mood Insurance Race Map Community Panes 51003CO2$OA £or A,ll�emarle
County w/ Effective Date 2/4/2005.
3- Tax Map 45 Parcel 59M was assigned 5 development rids and is being divided into Lots 1 through 5 each of which. N assigned 1 development right and
may not be further divided- The development rights used are within the limits of the 1930 boundary of their parcel of origin.
4. Corner monnmentation is as noted on Sheets 2 through 4.
S. These lots are zoned RA- I fininnmr lot size is 2 acres. Minmmum road floc{;,fie is 259 on Rte- 743 & 150' on Olivia Court- The -i-i-um building setbacks
are 75from the edge of the S(Y R/W for Rtr- 743, 25' from the edge of the 54' R/W for Olivia Court, 25, sides, and 35' rear- Accessory structures can be
a n rantr •m of 6' fmm side and rear lot lines per Sect 4112 (b) of the Albemarle County honing Ord- Lot width can not be less than 290' at th. 75' setback
from Rte. 743 & 150' in a building area adjoining Olivia Court.
6- The septic setback is 100' from all streams & the strewn buffers shown hereon will be manag d in accordance with the Alb- Co- Water Protection Ordinance -
The dminfields shown on Lots 1 th- 5 were locak:d by a current field survey and will be submitted for approval to the Alb_ County Environmental Health Dept -
by Mr- Tom Hogg. CAME #1940001091, Blue Ridge Sort Consulting, inc)- The stream buffers shown hereon were tal;en from Alb- County CIS infornation-
7. Lots 1 through 5 each contain a building site that complies with Sect 42-1 of the Alb- County Zooing Ordinance-
& The NW corner of TM 45-59M is within the South Fork Rivanna Water Supply Watershed (per Alb- County GIB information) and is as delineated on Sheet 2,
TM 45.-S9M does not he within an agriculturalforestal district.
9_ Cruder current policy public water and sewer will not be available to these lots-
10- TM 4559M is subject to an easement for ov arhead electric lines (no width given, along Rte 743, 35' east of its center line and 300' long) to the Vo ginia
Public Service Company as recorded in DB 232-395 (Doninion Energy; 1860 Commerce Road, Richmond VA 23224); and is subject to an easement for a
guy stub & anchor on VEPCO Pole A-131X as recorded in DR 272 l56 {Dominion Energy, prior address); and is mlrjer:t to an easement for overhead electric
& h_lephone lines (no width given, at a location to be designated by VEPCO) ic VEPCO as recorded in. DR 284-298 ('Dominion Energy, prior address); and is
subject to a 20' ease- for oveidiead telephone lines (adjoining Rte 743) to V TO, & Tel. as recorded in DU 314-179 (Sprint, 6200 Sprint Parkway, Overland
Park IS 66251). Bella, Signature Hones, LLC is hereby dedicating the Public Drainage Easements (0-028 Ac- & 0-019 A.c.) to the County of Albemarle for
public use togedier with required drainage ditelr4 Bella_ Sigua nr a Homes, LLC is hereby dedicating 25' fxo,m the center of Rte 743 (0.327 Aa) into theprop-
erty,
& the 54' R/W for Olivia Court (1252 Ao ), and the VDOT Sight'+' -•-•sr =n% (0 018 Ac-) to the Coumyof Albe- ale for use to drainage ditches- The sight ea wment areas shown on Sleets 2 & 3 were established by surveying a SW longline of sight'from
di center
of t e V required
entr-
ance for Olivia Court at 14-5' off Hie edge of the pavenxmt for Route 743 to the center of both laves of ching traffic- £Clearing is rate the center required the VDOT properly from those established suit lines- Theyembend to the edge of the 30' preseripti a easement on Rte 74 r TM 45 Parcels 59C & 59E1 and to the
edge of tho 0.327 acre road dedication for TM 45 Par_ S91vI (Lot 1)- A deed from Soscp4. Huff and the Knieelys to die County of Albernado for public use will
be acquired to cover the sight easements (0-035 Ail & 0.017 AP.) required by M30T on their properties. Those easements are agreed to by Joseph Huff and
the Knfcely's as not. -caved oil Sheet 3. The SWM FaciW F s.ments (0.285 Aa & 0-020 Ao.) and the S'U M Porest & Mien Space Easement (6-72 Ae- +/-) will
be managed L-w Hie Alb- Co. Water- Protection Ordinance- The SWM Forest and Open Space FAsement is subject to the guidance set forth by DRQ, in the VA
Stormwater Manag.mcn( Program- The areas will � - ' in a natiu-al, vegetabed state, esoept for actives as approved by the local program auth-
ority, such as £)rest management, eontrol of invasive species, replanting and revege+_=ee passive recreation (e.g„ traa13), and limited bush hogging to maintain
desired vegetative eontmnnity (but no more than four times a year)-
11- All subsequent division of the residue shall enter only onto such street(s) shown on the approved final plat and ��
shall have no immediate access onto any other public street.
12. Critical slopes crest on Lois 3, 4, & 5- _41MIl Op A
Plat Showing Subdivision Of TasMap 45Parcel59M�"
Pa•ope,rfy Of B ff. Su.. iu� Hones, LL o Sr}aa ]. C6stahers
Charlottesville Mag- Dist, Alfemarle Co �-w& a No. 0403002141
Dat-e 111712019, Revs_ 11.3112020, 411512020
Chambers - Laird ,Surveying
Located at 112 Crofton Plana- Suite $ Palmyra Pa. C
Office Phone: (434) 589-5139 kD gel
Email- cbamberslandscrveying�yahoo-core 100' `� 0 a, s UBV
Ma&,g,g Address_ 253 Willow Dr, Aesrvick Va- 22947 Sheet Of4
I m 45 var. �91zl A
1 , anter Of Rio 743.
lyaviiledZead 5fa€ R( 7$3 25.1U
3o- Proscriptive Ease. Per 1932 Byrd Road Act -
15" CM
Centel Overhead LIM.
-
- - -
_Holes- _
�. Ref: Note 1U. Iron Fnd
247.60' I.S.
44'44'4T3 D°40'49"
'E
Sight Ease. RRoF. p; �V'
25' From The Center OfRoule �.1.51'
107.95' 25' Fram The Otr. Hereby
^ _L-1�= ;
-
Note 10 & Sh, 3 tj N m
-
741 Was Dedicated To TheCo, SE I
�~
Ced. To The Couldy Fer
a 1
M
11)
W
VAlb. For Public Use For
1, gd
TM45-59f.Ref:DB319220PIa1SKK�j
'� Public Use. Ref: Nate 10.
,
oa
w rn m
ate�s�+
cnN m Nita---_____-----
1 Building
------------
-
-- -- -
outnF uQp\Y
rp1>7 un�1
Setbacks
' Drainfidd 1
Rt ef, Note 6.
i
� m
rn m m o j. I40 Rd. Note 5.
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o
Z
=g8-g 'mo
TM 45 mar. 59M Ref: Detail Sh. 3 } �
m
0 Q
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(Am
R&. Detail Sh. 3
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N45'18'42"E 494.26'�r°
NO.BEARING DISTANCE
AA S44'41'18-E 50,00,
AB N45'18'42"E 41.49'
AC S46.08'00-E 38.60'
AD N43'52'00"E 54.00'
O
m
]osier I' ng Trani
c/o R ...la &
Del,or" Foster
DR 1914-555
DR 6719-220 ]Plat
TM 415 Par. 591L
North is based
on NAD'83
US State Plane
..&VGA..
VA South
N�;sTx Or .1
'i
Bryan J. CbmrJxn
No. 0403002141
45 Par- w)p '1
V6
Plat Showing Subdivision Of
Tax Mgp 45 Parcel 59M
Pxwperfy OfBdla Sixna&m lloj es, LLC
Charlottesville Hag. Dist., A&emarle Co, IDilglnia
• Date.• 111712019 , Revs.- 113112020, 41JSIMW
Chambers - Land Sw-veyrog
Located at 112 Crofton Plana - Suite K Palmyra Pa.
Office Phone_ (434) 589-5139
Email- aharerberslandsurveYin$yahoo-com
Mazbng Address_ 253 Wz-How Dr, Keswick Va- 22947
. Ir ` I1/ iron zie
r'---------
R
O / a
C 0� n R D:rifield 2 i , 0
t,Q 'O �O 1 . Ref. Noe 6.
N45 18'42"E 476.6fi' -- `�- Iron&
-----------------
11 % 0
- 58. 3'-
Prop+d
o Well I o
U1 9+ t
n i m
P
Drainfield 3 ,
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J M. Note 6. 1 -1
N45'18 42"E 4605.
L - - - - Iron Set
12"x 24' CMP-Ke-q-d
------------- -
Prop'd ,t
Lot 4 - aaA Of � A
M .45 Par_ 59M
m
2.W-3 AcreN
C Drainfield 4
------�` Ref. Note 6. \�
N45 18'42"E 433.13' ^ ^ ^ -
393.40' y
-------- - --- I D l
I
Ll AB I
Public Dr, Ease, Ref: Detail %.4
�l =I�`INole10&Sh.3
ar CenlerG[Re.743ong Bsi
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zl icl 3-; By Byrd Ad
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DB 5046-189 DB 87 378 P&C
s
TM 45 P—,cel 59M
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°-1.352Aa. Oiivrn C-. f
= 16.597A
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QL
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A
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113 O
Ref. Note 6_ 1
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ED
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to
lsons Found
° rrt
w
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Iron 9y gin' S 36'32"� TM 46 P.-5eD)Eji[
��' 100' 50, 0 100
Fnd. Sheet 2Of4
Well Location
'07'02.UM
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69- fro DB 2619 Pgs. 128-129 Plat - —
6ZSL,O S46-34.45-E
• e� � mob— = ='I� _-'�
Pipe Fnd. VEPCQ overhead Uhl. Poles 15 GMP Rodney or ��nopnaeby
,ci �•_ p ----
FHB 2486-626
-----------------------------
B 129 Plat
EAstingEntrance &Gravel Rd. ----------fW-
-------_----___-----
TM 45 Par. 597ET1
S46'01'47"E 257.22'
n 8 Iron Fnd. 18" HDPE Culver4 74' L.---J
wl ES-1 8 EW-1 @ Ends
m i9 1 , Olivl,a Court Dedicated To'ihe County For k4' W W For Aublic Use
a O rn jw, 1.352 Ac. Is Hereby
To Be Paved --
m m -� ! Iron Set 546`01'07"E 257.73'
U o Public Drainage 21. 2' Fr-29.02'
(15) A=32°03'15" L=8.39' I(
Easement 0.028 Ac_- iCM !
n- _ u? , (14) A=57"3T51" L=14.04' Ref: Note 10 $51°4509E 2
v I 23.00' o I mCA
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DB 4175-475, DB 2619 ,
Pg.. 128-129 P1a1=, TI�iL 45 Par- 591i r
--------------------------
919.19'
845"08.00-E---�---
J`-' 225-06-
W 3
g7.00
oZ m� �o1,4
®�d
-----------------------
To The
Olivia Court 1.352Ac. 15 Hereby➢edicated
To Be Paved County For A 64' W W For Public Use
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0"-100' Stream Buffer
• - Loc`n Based On
Albemarle GIS
W 0
This SWM Forest & Open Space Ease.
N
Is Owned By The Bella Signature Homes
Home Owners Assoc. And Runs With The
North Side Of The 100' Stream Buffer
m
As it Meanders Along The Existing
Stream (8,72 Ac. +I- Ref: Note 10)
Z
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i
Attachment B:
NRCS Soils Mapping
3 Soil Map —Albemarle County, Virginia
a (Albemarle County Parcel #45-59M Tier III Groundwater Assessment)
!b
721000 721100 721200 721300 721400 721500 721600 721700 721800 721900 722000 722100 722200 722300 722400
38° 713" N
g
v
222
v
�
a
�
*M
�;y
v
R
�
R
fir.~y
- .�•* 5,c
,
V
V
38° 640" N
721000
721100 721200 721300 721400 721500
721600 721700 721800 721900
3
fn
Map Scale: 1:7,170 if printed on A landscape (11" x 8.5") sheet.
Mebers
N 0 100 200 400
600
Feet
0 300 600 1200
1800
Map projection: Web Mentor Comer coordinates: WGS84 Edge tics: LF M Zone 17N WGS84
G}DA
Natural Resources
Web Soil Survey
Conservation Service
National Cooperative Soil Survey
722000 722100 722200 722300 722400
3
N
!b
722500 RR
38° 7' 13" N
8
DS
v
r�
8
NV_
N
$V$
38° 640" N
a
722500
3
v
N
1 /28/2019
Page 1 of 3
Soil Map —Albemarle County, Virginia
(Albemarle County Parcel #45-59M Tier III Groundwater Assessment)
MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
0
Soil Map Unit Polygons
rwr
Soil Map Unit Lines
0
Soil Map Unit Points
Special
Point Features
Vo
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
.14
Gravelly Spot
0
Landfill
Lava Flow
Marsh or swamp
+
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
4
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
oa
Sodic Spot
MAP INFORMATION
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:15,800.
Stony Spot
Very Stony Spot
Warning: Soil Map may not be valid at this scale.
Wet Spot
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
Other
line placement. The maps do not show the small areas of
.-
Special Line Features
contrasting soils that could have been shown at a more detailed
scale.
Water Features
Streams and Canals
Please rely on the bar scale on each map sheet for map
measurements.
Transportation
Rails
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
rwr
Interstate Highways
Coordinate System: Web Mercator (EPSG:3857)
US Routes
Maps from the Web Soil Survey are based on the Web Mercator
L
Major Roads
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Local Roads
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
Background
.
Aerial Photography
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Albemarle County, Virginia
Survey Area Data: Version 12, Aug 29, 2018
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Apr 22, 2015—Mar
10, 2017
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
USDA Natural Resources Web Soil Survey 1/28/2019
Conservation Service National Cooperative Soil Survey Page 2 of 3
Soil Map —Albemarle County, Virginia
Albemarle County Parcel #45-59M
Tier I I I Groundwater Assessment
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
7B
Braddock loam, 2 to 7 percent
0.5
0.2%
slopes
Chester loam, 2 to 7 percent
14B
3.3
1.4%
slopes
36B
Hayesville loam, 2 to 7 percent
43.5
18.2%
slopes
36C
Hayesville loam, 7 to 15
25.3
10.6%
percent slopes
36D
Hayesville loam, 15 to 25
0.2
0.1 %
percent slopes
47C
Louisburg sandy loam, 7 to 15
23.5
9.8%
percent slopes
47D
Louisburg sandy loam, 15 to
49.1
20.6%
25 percent slopes
65B
Pacolet sandy loam, 2 to 7
26.4
11.1 %
percent slopes
65C
Pacolet sandy loam, 7 to 15
8.0
3.4%
percent slopes
94B
Wedowee sandy loam, 2 to 7
24.5
10.3%
percent slopes
94C
Wedowee sandy loam, 7 to 15
33.9
14.2%
percent slopes
W
Water
0.6
0.2%
Totals for Area of Interest
238.8
100.0%
USDA Natural Resources Web Soil Survey 1/28/2019
Conservation Service National Cooperative Soil Survey Page 3 of 3
Attachment C:
VADEQ VEGIS Map
VADEQ VEGIS Map
Export
Leggy
AL Petroleum Releases (Daily),.
Registered Tank Facilities (Daily)
r
VPDES Outfalls (Daily)
General Permits
Individual Permits
Rivers (2016)
— Fully Supporting
— Insufficient Information
— Not Supporting
Reservoirs (2016)
■ Fully Supporting
■ Insufficient Information
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DEQ Regions 2016"
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DISCLAIMER: Information contained on this map is to be
used for reference purposes only. The VA Dept. of
Environmental Quality makes no representation of warranty
as to this map's accuracy, and in particular, its accuracy in
labeling, dimensions, contours, property boundaries, or
placement or location of any map features thereon. No
responsibility is assumed for damages or other liabilities due
to the accuracy, availability, use or misuse of the information
herein provided. Title: 1000' Buffer
Date: 12/3/2018
Attachment D:
Water Budget Calculations
Tier III Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M January 29, 2019
Attachment D:
Water Budget Calculations for Tier III GW Assessment (Albemarle Co. Parcel #45-59M)
Quantitative analysis helps evaluate the impact to local groundwater resources due to creation of
impervious surface and increased groundwater pumping as a result of site development. Existing
recharge to the site's local watershed (38.9 acres of undeveloped forest and cleared residential land) can
be modelled as follows:
Annual regional precipitation: 43 inches
Conservative estimate for the percentage of precipitation contributing to groundwater recharge,
subtracting runoff and evapotranspiration: 15%
Annual regional groundwater recharge: 6.45 inches
Average regional daily groundwater recharge:.0179 inches = .0015 feet
Daily recharge per acre:.0015 feet X 43560 square feet per acre = 65.6 cubic feet recharge per
acre
Gallons recharge per day per acre: 65.6 cubic feet X 7.48 gallons per cubic foot = 491 gallons per
day per acre
Gallons per day natural recharge to site: 491 gallons per acre X 38.9 acres = 19,100 gallons per day
(gpd)•
Gallons per day recharge lost due to existing impervious cover: 491 gallons per acre X 2.28 acres =
1,120 gallons per day.
Existing recharge = 19,100 gpd —1,120 gpd = 17,980 gpd
And considering current withdrawals from existing residences:
Average water usage per day: 100 gallons per day
Average People Per Household: 4 people
Current Households in watershed: 5 households
100 gallons per day per person X 4 people x 5 households= 2,000 gallons per day
Based on these calculations, the current (pre -development) groundwater surplus for the local watershed
can be expressed as:
Inputs (recharge) — Outputs (GW pumped) = Surplus
17,980 gpd — 2,000 gpd = 15,980 gpd surplus (pre -development)
Tier III Groundwater Assessment HydroGeo Project #18-374
Albemarle County Parcel #45-59M January 29, 2019
Post -Development Calculations:
Our current estimate is that the project will result in a net increase of impervious surface of 1.5 acres. The
impact on post -development groundwater recharge is estimated below:
Annual regional precipitation: 43 inches
Conservative estimate for the percentage of precipitation contributing to groundwater recharge,
subtracting runoff and evapotranspiration: 15%
Annual regional groundwater recharge: 6.45 inches
Average regional daily groundwater recharge:.0179 inches = .0015 feet
Daily recharge per acre:.0015 feet X 43560 square feet per acre = 65.6 cubic feet recharge per
acre
Gallons recharge per day per acre: 65.6 cubic feet X 7.48 gallons per cubic foot = 491 gallons per
day per acre
Gallons per day recharge lost due to new impervious cover: 491 gallons per acre X 1.5 acres = 736
gallons per day.
Existing recharge — Recharge Lost Due to New Impervious Surfaces = Post-Dev. Recharge
17,980 gpd - 736 gpd = 17,244 gpd
And considering projected withdrawals from new and existing residences:
Average water usage per day: 100 gallons per day
Average People Per Household: 4 people
Current Households in watershed: 5 households
Proposed Households in watershed: 5 households
100 gallons per day per person X 4 people x 10 households= 4,000 gallons per day
Based on this set of calculations and assumptions, the estimated post -development groundwater surplus
for the local watershed can be expressed as:
Inputs (recharge) — Outputs (GW pumped) = Surplus
17,244 gpd — 4,000 gpd = 13,244 gpd surplus (post -development)
Relative to the proposed usage of groundwater post development, overall recharge post -development will
be more than adequate to supply groundwater usage without long-term degradation of groundwater
resources.
Attachment E:
Engineering Review Comments
Xh
A- .
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
Tier III GW report review
Project:
Property of Bella Signature Homes, LLC — Tier III GW Assessment Report
Tier III preparer:
Earnest W. Beasley IV, CPG, HydroGeo Environmental, LLC
418 E. Main St. Charlottesville, VA 22902
Owner or rep.l :
Bryan Chambers, Chambers Land Surveying[chamberslandsurveving(a,yahoo.com ]
253 Willow Drive, Keswick, VA 22947
Owner or rep.2:
Clint Shifflett, Timmons Group [clint.shifflett(&timmons.com]
680 Preston Ave., Suite 200, Charlottesville, VA 22903
Applicant:
Luke Kitelinger, Bella Signature Homes, LLC [kitelingerlgyahoo.com]
1410 Rialto Street, Charlottesville, VA 22902
Plan received date:
31 Jan 2019
Date of comments:
7 Mar 2019
Reviewer:
John Anderson
Planning Reviewer: Paty Saternye
Engineering review of Tier III GW Assessment report is complete.
SUB2018-00177
1. Tier III Groundwater Assessment: Albemarle County Parcel #45-59M for Bella Signature Homes, LLC,
dated 1/29/19, is comprehensive, but is not approved.
2. Findings detail efforts to obtain well data from VDH, but VDH, as of report date, has been non -responsive
to FOIA request for detailed well and septic records for parcels located up to 1000-feet beyond the property
lines (ref. ACDSM, Sec. 2.13. La. l.d.). Table 1 (p. 5, report), Summary of Available Well Records,
indicates the average yield of seventeen (17) well records for wells located within a 0.5 mile radius of the
property is 12.9 gpm. Sec. 7.0, Conclusions (p. 6, report) states, "VDH regulations require a minimum
yield of 3 gpm for private residential water supply wells, while Sec. 6.0, Assessment of Well Drilling and
Testing, states, "Based on this study, the Site lies in an area capable of producing groundwater yield
sufficient to meet the demands of the proposed Site development; however, the actual yields of future onsite
supply wells cannot be known until the wells are drilled and properly tested." [Emphasis added.]
3. The only well listed in Table 1 located within one thousand feet of the parcel yields 2 gpm. The Tier III
report states, "Standard practice for development of water supply wells involves drilling into water bearing
zones in the fractured bedrock and sealing off the overburden with a solid well casing. Thus, the ultimate
performance of individual water wells in the Blue Ridge Province typically depends on the borehole
encountering sufficiently interconnected bedrock fractures. A dry hole results if a well is drilled into
bedrock with insufficient fracturing. Fracture occurrence and density depend on a number of factors
including specific location, rock type, and site -specific geologic conditions. Because groundwater occurs in
discrete fractured zones, it is not unusual to find variability in yields for wells in close proximity to each
other. Because the regolith provides groundwater storage, a thicker mantle of overburden usually suggests
more favorable conditions for sustainable long-term groundwater withdrawals." (p. 3; emphasis added).
4. Attachment D, Water Budget Calculations for Tier III GW Assessment (Albemarle Co. Parcel #45-59M),
rounding difference: If use .0015 feet vs .00147 as average regional daily groundwater recharge value, this
Engineering Review Comments
Page 2 of 2
increases the post -development groundwater surplus report value by a negligible amount (z2%).
Attachment D projects 13,244 gpd surplus (post -development). For comparison, a household of five is
estimated to consume 500 gpd, and the proposed five additional households in the watershed are included
(subtracted) when calculating the 13,244 gpd surplus (if use .00147, surplus value decreases slightly to
z12,851 gpd). Attachment D calculations may assume 1,000' x 20' principal access /road, may apportion
9,068 ft2 new impervious area per lot. Even allowing 100' x 12' stone or paved driveway allows 7,868 ft2
of impervious roof, walk, etc., per lot, which is conservative. Attachment D appears reasonable and
accurate, and is accepted.
5. Report assessment of well drilling and testing, spatial variability of well yields, the relative lack of yield
data within 1,000' radius of the parcel, requires test well results:
a. Engineering recommends HydroGeo Environmental coordinate with Applicant, select a test drill
location coincident with the proposed well site location evaluated (for reasons HydroGeo should
outline for Engineering) to have low if not lowest potential well yield, and provide well test results
in accord with VDH well test protocol. Should this test well yield at least 3 gpm, Engineering will
approve the Tier III Groundwater Assessment. The only VDH available data within 1,000 of the
parcel to be subdivided yields 2gpm, which is insufficient for VDH permitting purposes.
Additional site -specific data is required to advance the final subdivision plat.
b. Alternative to item 5.a.: If proposed location rated least likely to yield 3 gpm does not yield 3 gpm,
Applicant should test a second of the five well sites for this 5-lot subdivision (ref. report /sketch —
Attachment A), and may choose a proposed well site evaluated most favorable, perform well test,
and average the two well test values. If this approach does not yield an average > 3 gpm, then
Applicant may persuade Albemarle that each of the proposed subdivided lots has reasonable
chance of encountering subsurface flow sufficient to support required 3 gpm, but this would seem
doubtful. Water budget calculations have little to do with peril faced by property owners unable to
establish a well supply that yields 3 gpm. Yields are influenced by chance, and additional site -
specific information is required prior to Tier III GW Assessment Report approval.
6. Minor: Reduced -size plat /sketch scales are inaccurate. Include note that defines accurate scale, or revise
plat sketches included with report using hand -notation to indicate an accurate scale so that a reader may
refer to scale, and acquire accurate length or distance information from plats included with the report.
Please call Engineering at 434.296-5832 -0069 if any questions.
Thank you
SUB201800177 Bella Signature GWA 030719
Attachment F:
Commonwealth of Virginia Uniform Water Well Completion Report
Commonwealth of Virginia
Uniform Water Well Completion Report
Owner: Bella Signature Homes LLC
Address: 1410 Rialto Street
Charlottesville, VA 22911
Phone:
Location: Earlysville Road
*Well Data
General Information
Drilling Method Rotary _ Date Completed 3/31/2020
Depth to Bedrock 30ft Yield 20 (GPM)
Static Water Level 25ft Stabilized Water Level
Well Disinfected (Y or N) Disinfectant Used
Casing
From +2ft to 30ft
Size 6 %" Material PVC
Weight/schedu[e
Gravel Pack
From to
Grout
From 0 to 20ft
Bore Hole Size 10 inch.
Type Bentonite
Method Poured
Water Zones or Screened Intervals
From 148
to 150ft
Mesh Size
Diam
From
To
Mesh Size
Diam
From to
Size Material
Weight/Schedule
From to
From To
Bore Hole Size
Type
Method
From To
Mesh Size Diam
From To
Mesh Size Diam
*Use Date*
Tax Map ID 45-59M
VDH Permit 101-20-0043
VWCB Permit
VWCB ID
County Albemarle
Total Depth of well 225ft
Length of Test 1 hour
Natural Flow (Rate)
Amount Used
From To_
Size Material
Weight/Schedule-
From to
From to
Bore Hole Size
Type
Method
From
To
Mesh Size
Diam
From
To
Mesh Size
Diam
Private well: Domestic X Agricultural Industrial
Publie well: Community Non -community
*Abandonment information*
Bored of Dug Wells
Casing Removed, Y or N?
If Y, Depth to which casing was removed
Depth and Type of'rill:
Source of Fill
Bentonite Plugs: From —to —From To
Method of permanently marking location:
Monitoring
Wells other than Bored Wells
Casing removed, Y or N?
Depth to which casing was removed
Applicalbe, depth(s), and type of gravel/sand fill:
Source of gravel or sand:
Cement: From To From To
*Drillers Log*
Depth Description of Formation or Sediment Remarks
0 — 30 dirt, soft rock
30 — 225 gray rock
C`3
(Use Additional Sheets if necessary)
I certify that the information contained here is true and that this well was installed and constructed in accordance with the
permit and further that the well complies with all applicable state and local regulations, ordinances and laws.
Name Matheny Well Drilling and Pump Service, Inc_
Address 2797 KaceV Lane
Afton VA 22920
Phone 434-760-4090
Drillers Signature P/vb
Date 3 31 2020 Representi
Virginia Contractors License Number 017282 & 2719000083
Attachment G:
Terms and Conditions
Xh
A- .
Revised Tier/H Groundwater Assessment HydroGeo Environmental, LLC
Albemarle County Parcel #45-59M May 12, 2020
Attachment G: Terms and Conditions
The work performed in conjunction with this project, and conclusions presented in this report, are intended
as a description of available information based upon work conducted by HydroGeo staff trained in the
performance of hydrologic field data collection in accordance with industry standards in place at the time
the work was performed. HydroGeo was not involved with test well location selection, drilling, logging, or
testing.
The findings and conclusions of this work are based upon the professional judgment of HydroGeo personnel
in light of the quality and quantity of data collected during the performance of this assessment. This report
does not warrant against future operations or conditions, nor does it warrant against operations or
conditions present of a type or at a specific location not investigated. Stated opinions and conclusions are
not intended as a guarantee. The only reliable way to confirm whether a sustainable groundwater resource
is present is to drill a well and test it for quality and quantity.