HomeMy WebLinkAboutSUB201500104 Approval - Agencies Final Plat 2015-07-23 ),
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COMMONWEALTH of VIRGINIA
In Cooperation with the Thomas Jefferson Health District ALBEMARLE-CHARLOTTESVILLE
State Department of Health FLUVANN TY(STAY(PALMYRA)
1138 Rose Hill Drive GREENE COUNTY(STA
LOUISA COUNTY(LOUISA)
Phone(434)972-6219 P. O. Box 7546 NELSON COUNTY(LOVINGSTON)
Fax (434) 972-4310
Charlottesville, Virginia 22906
July 23,2015
J.T Newberry
County of Albemarle
Department of Community Development eii ►4 P P ROU ED
401 McIntire Road
Charlottesville,Virginia 22902-4596
RE: Review of Proposed Subdivision Plat and attached Soils Information for Individual Onsite
Sewage Systems as part of a division of Tax Map 78A Parcel 1 located in Albemarle
County,Virginia.
Dear Mr.Newberry:
On July 9,2015,the County of Albemarle requested the Virginia Department of Health(via the Albemarle
County Health Department)review the proposed subdivision plat identified above.This letter is to inform you
that the above referenced subdivision plat is approved for individual Onsite Sewage Systems in
accordance with the provisions of the Code of Virginia,the Sewage Handling and Disposal Regulations,
and local ordinances.
This request for subdivision review was submitted pursuant to the provisions of§32.1-163.5 of the Code of
Virginia which requires the Health Department to accept private soil evaluations and designs from an
Authorized Onsite Soil Evaluator(AOSE)or a Professional Engineer working in consultation with an AOSE for
residential development. This subdivision was certified as being in compliance with the Board of Health's
Regulations by:Joseph Mark Acors OSE#1940001097. This subdivision approval is issued in reliance
upon that certification.
Pursuant to §360 of the Regulations this approval is not an assurance that Sewage Disposal System
Construction Permits will be issued.for any lot in the subdivision identified above unless that lot is specifically
identified on the above referenced plat as having an approved site for an onsite sewage disposal system,and
unless all conditions and circumstances are present at the time of application for a permit as are present at the
time of this approval. This subdivision may contain lots that to do not have approved sites for onsite sewage
systems.
This subdivision approval does pertain to the requirements of local ordinances.
Sincerely,
NI j „4,___„,
Travis T.Davis,OSE
Environmental Health Specialist, Sr.
s-
8 Clja *a'tr:, S °
�IRGINIP Tr°
COUNTY OF ALBEMARLE
Department of Community Development
401 Mclntire Road,Room 227
Charlottesville,Virginia 22902-4596
Phone(434)296-5832 Fax(434)972-4126
Date: 7/9/2015
Teresa Batten
Virginia Department of Health Eil APPEND
1138 Rose Hill Drive
Charlottesville, VA 22906
Regarding:
Project Name: SUB201500104 Ashcroft Phase II, Section VIII—Final
Date Submitted: 7/7/15
Dear Ms. Batten:
The County of Albemarle has received application to develop/subdivide Tax Map 78A Parcel 1.
This project requires Health Department approval prior to receiving final County approval. The
applicant has provided a soils report, which is attached. Please review the proposal for suitable
subsurface drainfields that comply with the provisions of Chapter 18, Sections 4.2.2, 4.2.3, 4.2.4,
and Chapter 14, Section 310 of the Albemarle County Code.
Please contact me if you have any questions or comments.
Sincerely,
J.T. Newberry, Planner
County of Albemarle
Department of Community Development
Division of Zoning and Current Development
401 McIntire Road
Charlottesville, VA 22902
j newberrva,albemarle.org
(434)296-5832, ext 3270 phone
✓ 'Nod Page 1 of 8
OSE/PE Report for:
Construction Permit n Certification Letter n Subdivision Approval I• I
Property Location:
911 Address: On Summit Ridge Trail off of Lego Drive in Ashcroft Sub. City: Albemarle
Lot Lot 182 Section Phase II, Sec. VIII Subdivision Ashcroft
GPIN or Tax Map# 78A-1 Health Dept ID#
Latitude Longitude
Applicant or Client Mailing Address:
Name: R. L. Beyer
Street: 660 Hunters Place, Suite 101
City: Charlottesville State VA Zip Code 22911
Prepared by:
OSE Name Joseph Mark Acors License# 1940 001097
Address 6030 Haleys Mill Road
City_ Spotsylvania State VA Zip Code 22551
PE Name: n/a License#
Address
City State Zip Code
Date of Report June 23,2015 Date of Revision#1
OSE/PE Job# Date of Revision#2
Contents/Index of this report(e.g.,Site Evaluation Summary,Soil Profile Descriptions,Site Sketch,Abbreviated Design, etc.)
Soil Summary/Soil Profile Primary (2,3) Abbreviated Design Reserve Area(7)
Abbreviated Design Primary (4) Site Sketch (8)
Soil Summary/Soil Profile Reserve Area (5,6)
Certification Statement
I hereby certify that the evaluations and/or designs contained herein were conducted in accordance with the Sewage Handling and
Disposal Regulations(12 VAC5-610),the Private Well Regulations(12 VAC5-630)and all other applicable laws,regulations and
policies implemented by the Virginia Department of Health. I further certify that I currently possess any professional license required
by the laws and regulations of the Commonwealth that have been duly issued by the applicable agency charged with licensure to
perform the work contained herein.
ElThe work attached to this cover page has been conducted under an exemption to the practice of engineering.specifically the
exemption in Code of Virginia Section 54.1-402.A.11
1 recommend that a(select one): construction permits certification letters subdivision approval Zbe(select one)issued enied
OSE/PE Signature Date June 23, 2015
Seise Page 2. of
Soil Summary Report
General Information
Date: March 18, 2015 Submitted to Albemarle Co. Health Department
Applicant: R. L. Beyer Phone: (434) 977-0778
Address: 660 Hunters Place, Suite 101, Charlottesville, VA 22911
Owner: same as above
Address:
Location: On Summit Ridge Trail off of Lego Drive in Ashcroft Subdivision.
Tax Map: 78A-1 Subdivision: Ashcroft
Phase II, Section VIII Lot: Lot 182 (Site#1-ASC)
Primary Drainfield-Conventional Trench System
SOIL INFORMATION SUMMARY
1. Position in landscape satisfactory Yes X No
Describe Wooded Piedmont Sideslope
2. Slope 19 0/0
3. Depth to rock or impervious strata Max. Min. None X
4. Depth of seasonal water table (gray mottling or gray color)
Yes inches
No X
5. Free water present Yes No X
6. Soil percolation rate estimated Yes X Texture Group III
No *Estimated Rate: 70mpi
*All applicable regulations as well as the
specific soil and site conditions (including
the trench sidewalls) were taken into
7. Permeability test performed Yes account when the estimated percolation
No X rate was assigned.
If yes, note type of test performed and attach:
'Site Approved: Primary drainfield to be placed at 36" inch depth at site
designated on permit Site#1-ASC
If required, reserve drainfield to be place at 36" depth as
designated on permit Site#2-ASC
_Site Disapproved
Reasons for rejection:
1. Position in landscape subject to flooding or periodic saturation
2. Insufficient depth of suitable soil over hard rock
3. _Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
4. Rates of absorption too slow
5. Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
6. Proposed system too close to well
7. _Other, Specify
(attach additional pages if necessary)
Acors Soil Consulting, Inc. 6/3/2015
Page S of
Soil • rofile Description Report
Date of Evaluation March 18, 2015
Ashcroft Lot 182-Primary D/F, Site#1
Where the local health department conducts the soil evaluation, the location of profiles holes may be shown on the schematic
drawing on the construction permit or the sketch submitted with the application. If soil evaluations are conducted by a private soil
scientist, location of profile holes and sketch of the area investigated including all structural features, i.e., sewage disposal
systems, wells, etc., within 100 feet of site (See Section 4) and reserve site shall be shown on the reverse side of this page or
prepared on a separate page and attached on this form.
ESee application sketch page ESee construction permit QX See sketch attached to this form
Depth Texture
Hole Horizon (inches) Description of color, texture, etc. Group
1 A 0-7 10YR4/3 Loam, Friable IIB
Bt 7-55 2.5YR4/6 Silty Clay Loam, Friable to Firm III
C 55-60 2.5YR4/6 with many 10YR6/6, 7/6, 6/8 (parent), Silt Loam, III
Friable
2 A 0-6 10YR4/3, 5/3 Loam, Gravelly, Friable IIB
Bt1 6-22 5YR4/6 Silty Clay Loam, Friable to Firm III
Bt2 22-60 2.5YR4/6 with few 10YR6/6, 6/8 (parent), Silty Clay Loam, III
few channers 50"-60", Friable to Firm
3 A 0-6 •5YR4/4 Light Clay Loam, Friable III
Bt 6-52 2.5YR4/6 Silty Clay Loam, Friable to Firm III
C 52-60 2.5YR5/6 with many 10YR6/6, 6/8 (parent) and few III
7.5YR6/6 (parent), Silt Loam, Friable
These profile descriptions were evaluated from backhoe pits.
Acors Soil Consulting, Inc. 6/3/2015
Page 14 of 5
Abbreviated Design Form
Ashcroft Lot 182, Site#1-ASC
Primary Drainfield-Conventional Trench System
Design Basis
1. A. Estimated Percolation Rate(minutes per inch) 70mpi
B. Recommended trench bottom (inches) 36"
C. Depth to restrictive feature or to limit of evaluation (inches) 60"
D. Minimum separation distance required 18"
E. Separation distance in inches provided in design (1C-1B) 24"
F. Minimum trench bottom due to slope [(% slope-8)/2 + (1 or 18)] (inches) 24"
G. Is the slope greater than 10%? yes
H. If slope is greater than 10%, does greater than 24"to rock exist below trench bottom? yes
I. If slope is greater than 10%, and there is greater than 24"to trench bottom,
add 1'to the minimum center to center spacing, beginning at 20% slope and continue
for each 10%slope increase above 20%. If trench bottom is less than 24"above
rock, add 1'to the minimum center to center spacing beginning at 10% slope and
continue for each 10% slope increase above 10%. (For center to center spacing
increase above the minimum, see the box at right.) n/a
2. Trench bottom square feet required RE bedroom
from Table 4.6 based on: XX Gravity 0 LPD 544
3. Number of bedrooms 3
Area Calculations
4. Trench length 60'
Length of available area 60'
5. Trench width 3'
6. Number of trenches 10
7. Center-to-center spacing 9'
8. A. Width required (#of trenches- 1)*(center spacing)+(trench width) 84'
B. Width of available area 84'
9. Total square footage required(trench bottom s.f./bedroom)*(# of bedrooms) 1632
10. Square footage in design (trench length)*(trench width)*(#of trenches) 1800
11. Is a reserve area required? ❑X Yes fNo
Percent required: 100%
Percent available: 148%
Notes: 100%Reserve is satisfied with 7-40'(3'wide)AdvanTex Trenches in Site#2-ASC Area.
Acors Soil Consulting, Inc. 6/3/2015
Slope
Page S of D
Soil Summary Report
General Information
Date: March 18, 2015 Submitted to Albemarle Co. Health Department
Applicant: R. L. Beyer Phone: (434) 977-0778
Address: 660 Hunters Place, Suite 101, Charlottesville, VA 22911
Owner: same as above
Address:
Location: On Summit Ridge Trail off of Lego Drive in Ashcroft Subdivision.
Tax Map: 78A-1 Subdivision: Ashcroft
Phase II, Section VIII Lot: Lot 182 (Site#2-ASC)
100% Reserve Area-AdvanTex Trench System
SOIL INFORMATION SUMMARY
1. Position in landscape satisfactory Yes X No
Describe Wooded Piedmont Sloping Ridge
2. Slope 16 0/0
3. Depth to rock or impervious strata Max. Min. None X
4. Depth of seasonal water table (gray mottling or gray color)
Yes inches
No X
5. Free water present Yes No X
6. Soil percolation rate estimated Yes X Texture Group 111
No *Estimated Rate: 70mpi
*All applicable regulations as well as the
specific soil and site conditions (including
the trench sidewalls) were taken into
7. Permeability test performed Yes account when the estimated percolation
No X rate was assigned.
If yes, note type of test performed and attach:
Site Approved: Primary drainfield to be placed at 36" inch depth at site
designated on permit Site#1-ASC
If required, reserve drainfield to be place at 36" depth as
designated on permit Site#2-ASC
=Site Disapproved
Reasons for rejection:
1. _Position in landscape subject to flooding or periodic saturation
2. _Insufficient depth of suitable soil over hard rock
3. _Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
4. _Rates of absorption too slow
5. _Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
6. Proposed system too close to well
7. _Other, Specify
(attach additional pages if necessary)
Acors Soil Consulting, Inc. 6/3/2015
Page (g) of 6
Soil-Profile Description Report
Date of Evaluation March 18, 2015
100% Reserve Area-Site#2-ASC
Where the local health department conducts the soil evaluation, the location of profiles holes may be shown on the schematic
drawing on the construction permit or the sketch submitted with the application. If soil evaluations are conducted by a private soil
scientist, location of profile holes and sketch of the area investigated including all structural features, i.e., sewage disposal
systems, wells, etc., within 100 feet of site (See Section 4) and reserve site shall be shown on the reverse side of this page or
prepared on a separate page and attached on this form.
ESee application sketch page fSee construction permit See sketch attached to this form
Depth Texture
Hole Horizon (inches) Description of color, texture, etc. Group
1 A 0-6 2.5YR4/4 Light Clay Loam, Friable III
Bt 6-49 2.5YR5/6 Silty Clay Loam, Friable to Firm III
C 49-60 2.5YR5/6 with common 10YR6/6, 6/8, 7.5YR6/6 (parent), III
Silt Loam, Friable
2 A 0-7 5YR4/3 Light Clay Loam, Friable III
Bt1 7-21 5YR5/6 Silty Clay Loam, Friable to Firm III
Bt2 21-60 2.5YR4/6 with few 10YR6/6, 2.5Y5/6 (parent), Silty Clay Loam, III
few channers, Friable to Firm
3 A 0-6 5YR4/4 Light Clay Loam, Friable III
Bt 6-50 2.5YR5/6 Silty Clay Loam, Friable to Firm III
C 50-60 2.5YR5/6 with common 10YR6/6, 6/8 (parent), Silt Loam, III
Friable
These profile descriptions were evaluated from backhoe pits.
Acors Soil Consulting, Inc. 6/3/2015
°j d Page I of e'
Abbreviated Design Form
Ashcroft Lot 182, Site#2-ASC
Reserve Area-AdvanTex Trench System
Design Basis
1. A. Estimated Percolation Rate(minutes per inch) 70mpi
B. Recommended trench bottom (inches) 36"
C. Depth to restrictive feature or to limit of evaluation if none encountered (inches) 60"
D. Minimum separation distance required (may be impacted by perc rate) 12"
E. Separation distance in inches provided in design (1C-1B) 24"
F. Minimum trench bottom is 10 inches, unless slope is > 10%, then [(% slope x .01 x
trench width in inches)+ 10 inch minimum] 16"
G. Is the slope greater than 10%? yes
H. If slope is greater than 10%, does greater than 24"to rock exist below trench bottom? yes
I. If slope is greater than 10%, and there is greater than 24"to trench bottom,
add 1'to the minimum center to center spacing, beginning at 20% slope and continue
for each 10% slope increase above 20%. If trench bottom is less than 24"above
rock, add 1'to the minimum center to center spacing beginning at 10% slope and
continue for each 10%slope increase above 10%. (For center to center spacing
increase above the minimum, see the box at right.) n/a
2. Square feet required:
Puraflo/Advantex loading rate: 0.8 gpd/sq.ft. 188
Square footage required per bedroom: (150 gpd/bedroom)I( 0.8 gpd/sq.ft.)
3. Number of bedrooms 3
Area Calculations
4. Trench length 40'
Length of available area 40'
5. Trench width 3'
6. Number of trenches 7
7. Center-to-center spacing 9'
8. A. Width required [(#of trenches - 1)*(center spacing)] + (trench width) 57'
B. Width of available area 70'
9. Total square footage required(trench bottom s.f./bedroom)*(# of bedrooms) 564
10. Square footage in design(trench length)*(trench width)*(#of trenches) 840
11. Is a reserve area required? QYes El No
Percent required: 100% Notes:Reserve is satisfied with 7-40'(3'wide)
Percent available: 148% AdvanTex Trenches in Site#2-ASC D/F Area.
Acors Soil Consulting, Inc. 6/3/2015
{ Page B of 6
SITE SKETCH
(Sanitary Survey)
On &off site features
noted within 200 ft. of
Owner: R. L. Beyer proposed drainfield and
Subdivision: Ashcroft Lot 182 well areas are shown.
County: Albemarle Scale: 1"= 50'
Soil Boring: #
House: H
Well: ►JIR
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Acors Soil Consulting, Inc. - 6/3/2015
sow/ '`"/ Page 1 of 6
OSE/PE Report for:
Construction Permit t J Certification Letter Ft Subdivision Approval I I
Property Location:
911 Address: On Summit Ridge Trail off of Lego Drive in Ashcroft Sub. City: Albemarle
Lot Lot 183 Section Phase II, Sec. VIII Subdivision Ashcroft
GPIN or Tax Map# 78A-1 Health Dept ID#
Latitude Longitude
Applicant or Client Mailing Address:
Name: R. L. Beyer
Street: 660 Hunters Place, Suite 101
City: Charlottesville State VA Zip Code 22911
Prepared by:
OSE Name Joseph Mark Acors License# 1940 001097
Address 6030 Haleys Mill Road
City Spotsylvania State VA Zip Code 22551
PE Name: n/a License#
Address
City State Zip Code
Date of Report June 23,2015 Date of Revision#1
OSE/PE Job# Date of Revision#2
Contents/Index of this report(e.g.,Site Evaluation Summary,Soil Profile Descriptions,Site Sketch,Abbreviated Design,etc.)
Soil Summary/Soil Profile (2,3)
Abbreviated Design (4,5)
Site Sketch (6)
Certification Statement
I hereby certify that the evaluations and/or designs contained herein were conducted in accordance with the Sewage Handling and
Disposal Regulations(12 VAC5-610),the Private Well Regulations(12 VAC5-630)and all other applicable laws, regulations and
policies implemented by the Virginia Department of Health. I further certify that I currently possess any professional license required
by the laws and regulations of the Commonwealth that have been duly issued by the applicable agency charged with licensure to
perform the work contained herein.
111 The work attached to this cover page has been conducted under an exemption to the practice of eneineerina.specifically the
exemption in Code of Virginia Section 54.1-402.A.11
I recommend that a(select one): nstruction permit certification letters subdivision approval0
be(select one)issued denied U U.
OSE/PE Signature Date June 23, 2015
Page 1 of I
Soil Summary Report
General Information
Date: March 18, 2015 Submitted to Albemarle Co. Health Department
Applicant: R. L. Beyer Phone: (434) 977-0778
Address: 660 Hunters Place, Suite 101, Charlottesville, VA 22911
Owner: same as above
Address:
Location: On Summit Ridge Trail off of Lego Drive in Ashcroft Subdivision.
Tax Map: 78A-1 Subdivision: Ashcroft
Phase II, Section VIII Lot: Lot 183 (Site#1-ASC)
Conventional Trench Installation-Upper D/F Area
SOIL INFORMATION SUMMARY
1. Position in landscape satisfactory Yes X No
Describe Wooded Piedmont Sloping Ridge
2. Slope 17 0/0
3. Depth to rock or impervious strata Max. Min. None X
4. Depth of seasonal water table (gray mottling or gray color)
Yes inches
No X
5. Free water present Yes No X
6. Soil percolation rate estimated Yes X Texture Group III
No *Estimated Rate: 75mpi
*All applicable regulations as well as the
specific soil and site conditions (including
the trench sidewalls) were taken into
7. Permeability test performed Yes account when the estimated percolation
No X rate was assigned.
If yes, note type of test performed and attach:
'Site Approved: Primary drainfield to be placed at 30" inch depth at site
designated on permit Upper D/F
If required, reserve drainfield to be place at 30" depth as
designated on permit Lower D/F
Site Disapproved
Reasons for rejection:
1. _Position in landscape subject to flooding or periodic saturation
2. Insufficient depth of suitable soil over hard rock
3. _Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
4. _Rates of absorption too slow
5. _Insufficient area of acceptable soil for required drainfield, and/or Reserve Area
6. Proposed system too close to well
7. `Other, Specify
(attach additional pages if necessary)
Acors Soil Consulting, Inc. 6/3!2015
Page 3 of (,
Soi • rofile Description Report
Date of Evaluation March 18, 2015
Ashcroft Lot 183, Site#1-ASC
Where the local health department conducts the soil evaluation, the location of profiles holes may be shown on the schematic
drawing on the construction permit or the sketch submitted with the application. If soil evaluations are conducted by a private soil
scientist, location of profile holes and sketch of the area investigated including all structural features, i.e., sewage disposal
systems, wells, etc., within 100 feet of site (See Section 4) and reserve site shall be shown on the reverse side of this page or
prepared on a separate page and attached on this form.
ESee application sketch page ESee construction permit ESee sketch attached to this form
Depth Texture
Hole Horizon (inches) Description of color, texture, etc. Group
1 A 0-6 2.5YR4/4 Light Clay Loam, Friable III
Bt 6-46 2.5YR5/6 Silty Clay Loam, Friable to Firm III
BC 46-60 2.5YR5/6 with common 7.5YR6/6, 10YR6/8 (parent), III
Silty Clay Loam with pockets of Silt Loam, Friable
2 A 0-7 5YR4/4 Light Clay Loam, Friable III
Bt 7-44 2.5YR4/6 with few 10YR6/6 (parent), Silty Clay Loam, Firm III
C 44-60 Multi-colored 10YR6/6, 5/4, 6/4, 2.5Y6/6, 5/6 Silt Loam, III
few channers, Friable
3 A 0-6 5YR4/3 Light Clay Loam, Friable III
Bt 6-42 2.5YR4/6 with few 10YR6/8, 7/6 (parent), Silty Clay Loam, Firm III
C 42-60 2.5YR5/6 with many 10YR/6/6, 6/4, 2.5Y6/6 (parent), III
Silt Loam, few channers, Friable
4 A 0-6 2.5YR4/4 Light Clay Loam, Friable III
Bt 6-50 2.5YR4/6 Silty Clay Loam, Friable to Firm III
C 50-60 Multi-colored 5YR4/6, 5/4, 10YR6/6, 2.5Y5/4, 5/6 Silt Loam, III
Friable
5 A 0-6 5YR4/4 Light Clay Loam, Friable III
Bt 6-48 2.5YR4/6 with few 7.5YR6/6 (parent), Silty Clay Loam, III
Friable to Firm
C 48-60 Multi-colored 10YR6/6, 6/8, 5YR5/4, 5/8 Silt Loam, III
few clay flows, Friable
These profile descriptions were evaluated from backhoe pits.
Acors Soil Consulting, Inc. 613/2015
ti.✓ Page of
Abbreviated Design Form
Ashcroft Lot 183, Site#1-ASC
Conventional Trench Installation-Upper D/F Area
Design Basis
1. A. Estimated Percolation Rate(minutes per inch) 75mpi
B. Recommended trench bottom (inches) 30"
C. Depth to restrictive feature or to limit of evaluation (inches) 60"
D. Minimum separation distance required 18"
E. Separation distance in inches provided in design (1C-1B) 30"
F. Minimum trench bottom due to slope [(% slope-8)/2 + (1 or 18)] (inches) 23"
G. Is the slope greater than 10%? yes
H. If slope is greater than 10%, does greater than 24"to rock exist below trench bottom? yes
I. If slope is greater than 10%, and there is greater than 24"to trench bottom,
add 1'to the minimum center to center spacing, beginning at 20% slope and continue
for each 10% slope increase above 20%. If trench bottom is less than 24"above
rock, add 1'to the minimum center to center spacing beginning at 10% slope and
continue for each 10%slope increase above 10%. (For center to center spacing
increase above the minimum, see the box at right.) n/a
2. Trench bottom square feet requireder bedroom
from Table 4.6 based on: XX Gravity f LPD 596
3. Number of bedrooms 3
Area Calculations
4. Trench length 100'
Length of available area 100'
5. Trench width 3'
6. Number of trenches 6
7. Center-to-center spacing 9'
8. A. Width required (#of trenches- 1)*(center spacing) + (trench width) 48'
B. Width of available area 48'
9. Total square footage required(trench bottom s.f./bedroom)*(# of bedrooms) 1788
10. Square footage in design (trench length)*(trench width)*(#of trenches) 1800
11. Is a reserve area required? EYes f No
Percent required: 100%
Percent available: 106%
Notes: 100%Reserve is satisfied with 2-100'(3'wide)AdvanTex Trenches in lower D/F Area.
Acors Soil Consulting, Inc. 6,3/2015
410110. 'Nod
Page S of (p
Abbreviated Design Form
Ashcroft Lot 183, Site#1-ASC
Reserve Area-AdvanTex Trench System
Reserve Area-Lower Drainfield Area
Design Basis
1. A. Estimated Percolation Rate (minutes per inch) 75mpi
B. Recommended trench bottom (inches) 30"
C. Depth to restrictive feature or to limit of evaluation if none encountered (inches) 60"
D. Minimum separation distance required (may be impacted by perc rate) 12"
E. Separation distance in inches provided in design(1C-1B) 30"
F. Minimum trench bottom is 10 inches, unless slope is > 10%, then [(% slope x .01 x
trench width in inches)+ 10 inch minimum] 17"
G. Is the slope greater than 10%? yes
H. If slope is greater than 10%, does greater than 24"to rock exist below trench bottom? yes
I. If slope is greater than 10%, and there is greater than 24"to trench bottom,
add 1'to the minimum center to center spacing, beginning at 20% slope and continue
for each 10% slope increase above 20%. If trench bottom is less than 24"above
rock, add 1'to the minimum center to center spacing beginning at 10% slope and
continue for each 10% slope increase above 10%. (For center to center spacing
increase above the minimum, see the box at right.) n/a
2. Square feet required:
Puraflo/Advantex loading rate: 0.8 gpd/sq.ft. 188
Square footage required per bedroom: (150 gpd/bedroom)/( 0.8 gpd/sq.ft.)
3. Number of bedrooms 3
Area Calculations
4. Trench length 100'
Length of available area 100'
5. Trench width 3'
6. Number of trenches 2
7. Center-to-center spacing 9'
8. A. Width required [(#of trenches- 1)*(center spacing)]+ (trench width) 18'
B. Width of available area 18'
9. Total square footage required(trench bottom s.f./bedroom)*(# of bedrooms) 564
10. Square footage in design (trench length)*(trench width)*(#of trenches) 600
11. Is a reserve area required? QX Yes fl No
Percent required: 100% Notes:Reserve is satisfied with 2-100'(3'wide)
Percent available: 106% AdvanTex Trenches in Lower D/F Area.
Acors Soil Consulting, Inc. 6/3/2015
Page ( of
SITE SKETCH
(Sanitary Survey)
On & off site features
noted within 200 ft. of
Owner: R. L. Beyer proposed drainfield and
Subdivision: Ashcroft Lot 183 well areas are shown.
County: AlbemarleScale: 1"= 50'
Soil Boring: #
House: H
Well: NlA
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