HomeMy WebLinkAboutSUB201500103 Approval - Agencies 2015-08-10 Noe Now'
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COMMONWEALTH of VIRGINIA
In Cooperation with the Thomas Jefferson Health District ALBEMARLE-CHARLOTTESVILLE
State Department of Health FLUVANNA COUNTY(PALMYRA)
1138 Rose Hill Drive GREENE COUNTY(STANARDSVILLE)
Phone(434)972-6219 LOUISA COUNTY(LOUISA)
Fax (434) 972-4310
P. O. Box 7546 NELSON COUNTY(LOVINGSTON)
Charlottesville, Virginia 22906
August 10,2015
J.T.Newberry, Planner
County of Albemarle
401 McIntire Road
Charlottesville, VA 22902
RE: Review of Proposed Subdivision Plat as part of Tax Map 45, Parcel 57A located in
Albemarle County,Virginia.
Dear Mr.Newberry:
On July 27,2015,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: Steve Gooch; Onsite Soil Evaluator Number 1940001284. 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,
St en . argo V
Environ ental Health S ecialist, Sr.
Onsite Sewage and Wat r Programs
Steve Gooch STEVE GOOCH spgooch.geologist @gmail.com
C.P.G./O.S.E CONSULTING GEOLOGIST, INC. Phone: 434-531-0487
703 Oliver Creek Rd. Troy, Virginia 22974
July 25, 2015
Mr. Bill Fritz
County Of Albemarle
Dept. Of Planning and Community Development
401 McIntire Rd Room 227
Charlottesville, VA 22902-4579
Re: Proposed Drain Field Sites
Tract A(Residue) and Tract A-1
A Family Division of Tax Map 45-57A
Albemarle County
Dear Mr. Fritz:
Enclosed are three (3) copies of the soils work associated with the proposed drain
field sites for the above-referenced property. We request that you forward two (2)
copies to the Charlottesville-Albemarle Health Department for their review. Also
enclosed is the application for subdivision review form.
If you have any questions,please do not hesitate to call.
Sincerely,
Steve Gooch Consulting Geologist, Inc.
17-b--Q-Ue -D7/k.--
Steve Gooch
Encl.
Commonwealth of Virginia VDH Use Only
Application for Subdivision Review Health Department ID#
(Page 1 of 2 to be filled out by the Owner or Agent) Due Date
Owner Herman and Stella Morris Phone (434)973-3490
Mailing Address 2470 Rio Mills Road Phone
Earlysville,VA 22936 Fax
Developer/Agent Steve Gooch Phone (434)531-0487
Mailing Address 703 Oliver Creek Road Phone
Troy,VA 22974 Fax
AOSE Steve Gooch Phone (434)531-0487
Mailing Address 703 Oliver Creek Road Phone
Troy,VA 22974 Fax
Directions to Property: From Charlottesville take Rt.29 North,left on Rio Mills Road to 2470 Rio Mills Road on left
Name of Proposed Subdivision
Tax Map 45-57A Other Property Identification Dimension/Acreage of Property 5.39 Ac.
Number of lots proposed 2 Proposed water source(note:new or existing,public or individual) existing-spring,new-individual well
General size of lots 2.39 Ac.and 3.0 Ac.
(give range if appropriate)
Additional description of subdivision
Overview of soils and geology(optional but encouraged)
In order for VDH to process a subdivision application you must attach a plat of the property showing the location of the proposed onsite
sewage disposal systems and the reserve absorption areas(if required)and the location of the water supply system on each lot, if applicable.
Each plat or subsection of a subdivision shall be accompanied by specific soil information for each lot(absorption area and reserve area). If
not provided by the local subdivision ordinance,the district or local health department may require the plat to show streets,utilities,storm
drainage,water supplies,easements, lot lines,and original topographic contour lines by detail survey or other information as required.
When the AOSE site evaluations are reviewed,the property lines,building location and the proposed well and sewage system sites must be
clearly marked and the property sufficiently visible to see the topography,otherwise this application will be denied.
I give permission to the Virginia Department of Health(VDH)to enter onto the property described during normal business hours for the
purpose of processing this application and to perform quality assurance checks of evaluations and designs certified by an Authorized Onsite
Soil Evaluator(AOSE)or a Professional Engineer(PE)as necessary until the sewage disposal system has been constructed and approved.
Signature of Owner/Agent Date
Soils Study for Drain Field Sites
Tract A (Residue) and A-1
A Family Division of Tax Map 45-57A
Albemarle County
p otranin,‘
Prepared for:
Herman and Stella Morris
2470 Rio Mills Road
Earlysville, VA 22936
Prepared by:
Steve Gooch Consulting Geologist,Inc.
703 Oliver Creek Road
Troy, Virginia 22974
July 25, 2015
New
Soils Study for Drain Field Sites
Tract A (Residue) and A-1
A Family Division of Tax Map 45-57A
Albemarle County
trAl h U iiL
Prepared for:
Herman and Stella Morris
2470 Rio Mills Road
Earlysville,VA 22936
Prepared by:
Steve Gooch Consulting Geologist, Inc.
703 Oliver Creek Road
Troy, Virginia 22974
July 25, 2015
6
Page 1 of 5
OSE/PE Report for:
n IConstruction Permit n Certification Letter I Subdivision Approval 1
Property Location:
911 Address: 2470 Rio Mills Road
City:
Lot A Section Subdivision Morris Property
GPIN or Tax Map# 45-57A Health Dept ID#
Latitude Longitude
Applicant or Client Mailing Address:
Name: Herman and Stella Morris
Street: 2470 Rio Mills Road
City:Earlsyville
�' State VA Zip Code 22936
Prepared by:
OSE Name Steve Gooch
License# 1940001284
Address 703 Oliver Creek Road
City Troy State VA 22974
Zip Code
PE Name: License#
Nile+ Address
City State Zip Code
Date of Report 7/25/15 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.)
OSE Cover Page Abbreviated Design Form
Soil Profile Sheet Survey Plat
Soil Information Summary Sheet
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.
I I The 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 54.1-402.11
I recommend that a(select one): construction permit❑ certification letter subdivision approval 15
Nair be(select one)issued 0 denied El.
OSE/PE Signature JY".'.-eta it%Tip'` Date 7/Z51i6
P422- Z (IF—'
Soil Profile
Reserve Drain Field
Tract A
A Family Division of Tax Map 45-57A
ti..► Albemarle County
Hole Depth Horizon Material Description Soil Texture
(in.)
Group
9 0-5 A Dark gray(10YR 4/1) sandy loam, friable 2
5-24 E Very pale brown(10YR 8/3) sandy loam, friable 2
24- Cr
10 0-3 A Dark gray(10YR 4/1) sandy loam, friable 2
3-24 E Very pale brown(10YR 8/3) sandy loam, friable 2
24-53 BC Yellowish red(5YR 5/8) sandy clay loam, friable 2
53-72 Cl Reddish yellow(5YR 6/8) sandy loam, friable 2
72-84 C2 Yellow(10YR 7/8) loamy sand, friable 1
11 0-2 A Dark gray(10YR 4/1) sandy loam, friable 2
2-17 E Brown(10YR 5/3) sandy loam, friable 2
17-34 Bt Reddish yellow(5YR 6/8) sandy clay loam, friable 2
34-84 C Very pale brown (10YR 8/3) loamy sand 1
12 0-5 A Dark gray(10YR 4/1) sandy loam, friable 2
5-26 E Very pale brown(10YR 8/3) sandy loam, friable 2
New 26-48 BC Yellowish red(5YR 5/8) sandy clay loam, friable 2
48-84 C Yellow(10YR 7/8) sandy loam, friable 2
13 0-4 A Dark gray(10YR 4/1) sandy loam, friable 2
4-18 E Very pale brown(10YR 8/3) sandy loam, friable 2
18-40 Bt Yellowish red(5YR 5/8) sandy loam, friable 2
40-60 BC Yellowish red(5YR 5/8) sandy clay loam, friable 2
60-67 C Yellow(10YR 7/8) sandy loam, granite fragments 2
67- Cr
14 0-6 A Dark gray(10YR 4/1) sandy loam, friable 2
6-23 E Very pale brown(10YR 8/3) sandy loam, friable 2
23-48 Bt Yellowish red(5YR 5/8) sandy clay loam, friable 2
48-84 C Yellowish brown(10YR 5/8) sandy clay loam, friable 2
Page 3 of c
Appendix 2
Soil Summary Report
GENERAL INFORMATION
Date 7/25/15 Submitted to Albemarle County
Health Department
Applicant Herman and Stella Morris Telephone Number
Address 2470 Rio Mills Road Earlysville, VA 22936
Owner same Address same
Location 2470 Rio Mills Road
Tax Map 45-57A Subdivision
Block/Section Lot A(Residue)
SOIL INFORMATION SUMMARY
1. Position in landscape satisfactory? IX Yes No
Describe side slope
2. Slope 11 %
3. Depth to rock or impervious strata: Max. 84"+ Min, 24" None
4. Depth to seasonal water table(gray mottling or gray color) X No Yes inches
Free water present X No Yes range in inches
445'.`Soil percolation rate estimated X Yes Texture group I II CIO IV
No Estimated rate 55 min/inch
7. Permeability test performed Yes
X No
If yes, note type of test performed and attach
X Site Approved: Drainfield to be placed at 12" depth at site designated on permit.
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 depth of suitable soil to seansonal water table.
4. Rates of absorption too slow.
5. Insufficient area of acceptable soil for required drainfield, and/or Reverse Area.
6. Proposed system too close to well.
Other Specify
(attach additional pages if necessary)
Pay_ Y -
Abbreviated Design Form
This form is for use with gravity,pump to gravity,enhanced flow,and low pressure distribution(LPD)sewage system
designs and when applying for a certification letter or subdivision approval.
Nr
This abbreviated design covers the ❑ primary and reserve area, ❑ only the primary area, lily the reserve
area(check one)for Tract A—A Family Division of Tax Map 45-57A(Property ID).
Design Basis
Total length of available area: 50' Total width of available area: 90'
Estimated Perc.Rate: 55 at 12! in. (depth) Number of bedrooms(or GPD): 4
I 2
Conveyance Method : Pump Distribution method (specify): Pump
3c
Dispersal system basis Table 5.4 LGMI required? No (Yes/No)
Effluent quality required: Secondary (Primary, Secondary,Advanced Secondary)
Square feet per bedroom: 309 Total trench bottom area required: 4338*
* includes 17% increase for slope
Area Calculations
Number of trenches 44 Length of trenches: 50'
Width of trenches: 1' Center to center spacing: 2'
Reserve required? This is reserve Percent reserve area required: 100
Total width of absorption area required 86' Total trench bottom area provided: 4400
The required width is calculated by multiplying the center-to-center spacing by one less than the number
of trenches and adding 1 trench width plus any required reserve area. If the topography is not uniform
across the length of the site the trenches will need to flare apart on one end to maintain contour. When
this occurs it is necessary to use a center-to-center spacing that accounts for the flair or the installer will
not be able to fit the system within the approved area. It is perfectly acceptable to have more area
available,especially up and down the slope,than is required.
Page of
AOSE Form E Revised July 18,2007
1
1
P64 e_ 6--Of A
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4, � fen:posed
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p' UTILITY
0Q °"n ytreti,, , -ItN,;;�e, 4 �`R/V,4T LINES zQ
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•,• y 11m (••�8•55, 3 IRON . AD
100 FT.SEPTIC `32 p N - �'L'� ► , ` /2 �� , l
IRON` , s __Ta C4 $t is 39/S (G�� . s5NCE� � •ss' ii ,
SET 1.* '�� ''4 20.00 ,- • 'e '
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2470 �/ Co 50.
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• .L.'3°5-815411W /S ,, ? f L= 02°!
IRON FOUND AT A 79' 2 ap• IRON if,TALL WOOD POST DEVELOP SET i ,�_�R = 230
i'50.SPRtIVC 20.00 / I/ L = 114. 1
Scale 1"= 100' .4- Soil Profile Hole 9 i 2g> Ilia //Q• CS = SI18°
Reserve Drain Field Site LA L. MORR IS �3 00' / / �' PROPERTY L
Tract A(Residue) 04, 27.02' / CENTERLINE
64'' 1(/) PRESCRIPTIV
A Family Division of TM 45-57A ESC. 1 i�
Albemarle County,Virginia
IRON N..
Steve Gooch Consulting Geologist FOUND ' �
703 Oliver Creek Road TO U.S. R T. 291 /��
Troy, Virginia 22974 r I /Q.,/.)
,� SHEET TWO OF TWO /oat
Page 1 of 8
OSE/PE Report for:
Construction Permit 1-7 Certification Letter 1-1 Subdivision Approval I r l
Property Location:
911 Address: 2470 Rio Mills Road City:
Lot A-1 Section Subdivision Morris Property
GPIN or Tax Map# 45-57A Health Dept ID#
Latitude Longitude
Applicant or Client Mailing Address:
Name: Herman and Stella Morris
Street: 2470 Rio Mills Road
City:Earlsyville State VA Zip Code 22936
Prepared by:
OSE Name Steve Gooch License# 1940001284
Address 703 Oliver Creek Road
City Troy State VA Zip Code 22974
PE Name: License#
fir.► Address
City State Zip Code
Date of Report 7/25/15 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.)
OSE Cover Page Abbreviated Design Form
Soil Profile Sheets Survey Plat
Soil Information Summary Sheets
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.
VIThe 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 54.1-402.11
I recommend that a(select one): construction permits certification letter subdivision approval ig
be(select one)issued Q denied❑.
us►
OSE/PE Signature Date 7/Zs-1/5-
1 Z 1/7
Pet 5e_ z T
Soil Profile
Primary Drain Field
Tract A-1
A Family Division of Tax Map 45-57A
'view Albemarle County
Hole Depth Horizon Material Description Soil Texture
(in.)
Group
1 0-2 A Dark gray(10YR 4/1) sandy loam, friable 2
2-17 E Very pale brown(10YR 7/4) sandy loam, friable 2
17-50 Cl Yellowish brown (10YR 5/8) sandy loam, friable 2
50-72 C2 Pale brown(2.5Y 8/2) loamy sand, granite saprolite, 1
lithochromic
2 0-3 A Dark gray(10YR 4/1) sandy loam, friable 2
3-7 E Light brown(7.5YR 6/4) sandy loam, friable 2
7-32 Bt Red(1OR 4/6) silty clay loam, firm 3
32-72 CB Strong brown(7.5YR 5/80 silt loam, red(2.5YR 4/6) clay 3
loam, friable
3 0-4 A Dark gray(10YR 4/1) sandy loam, friable 2
4-14 E Light brown(7.5YR 6/4) sandy loam, friable 2
14-37 Bt Red(1OR 4/6) silty clay loam, firm 3
37-72 BC Light red (2.5YR 6/6) clay loam, yellowish brown 3
(10YR 5/8) loam, friable
4 0-2 A Dark gray(10YR 4/1) sandy loam, friable 2
2-8 E Light brown(7.5YR 6/4) sandy loam, friable 2
8-30 Bt Light reddish brown(5YR 6/4) clay loam, friable 3
30-48 Cl Yellowish red (5YR 5/8) sandy clay loam, friable 2
48-72 C2 Olive brown(2.5Y 4/4) schist saprolite, crushes to silt loam 3
5 0-3 A Dark gray(10YR 4/1) sandy loam, friable 2
3-14 E Light brown(7.5YR 6/4) sandy loam, friable 2
14-36 Bt Red(1OR 4/6) silty clay loam, firm 3
36-48 BC Red(2.5YR 5/8) clay loam,yellowish red(5YR 5/8) sandy 3
loam, friable
48-72 C Very pale brown(10YR 8/3) sandy loam 2
Page of 7
Appendix 2
Soil Summary Report
GENERAL INFORMATION
Date 7/25/15 Submitted to Albemarle County Health Department
Applicant Herman and Stella Morris Telephone Number
Address 2470 Rio Mills Road Earlysville, VA 22936
Owner same Address same
Location 2470 Rio Mills Road
Tax Map 45-57A Subdivision
Block/Section Lot A-1
SOIL INFORMATION SUMMARY- 1�6 tJ1AG DICLAk„ Ftdd
1. Position in landscape satisfactory? X Yes No
Describe side slope
2. Slope 11
3. Depth to rock or impervious strata: Max. Min. None x
4. Depth to seasonal water table(gray mottling or gray color) X No Yes inches
Free water present X No Yes range in inches
Not Soil percolation rate estimated 'X Yes Texture group I II III IV
No Estimated rate 55 min/inch
7. Permeability test performed Yes
X No
If yes, note type of test performed and attach
X Site Approved: Drainfield to be placed at 48" depth at site designated on permit.
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 depth of suitable soil to seansonal water table.
4. Rates of absorption too slow.
5. Insufficient area of acceptable soil for required drainfield, and/or Reverse Area.
6. Proposed system too close to well.
Other Specify
(attach additional pages if necessary)
Pco,c_ ( L
Abbreviated Design Form
This form is for use with gravity,pump to gravity,enhanced flow,and low pressure distribution(LPD)sewage system
designs and when applying for a certification letter or subdivision approval.
This abbreviated design covers the ❑ primary and reserve area, EYonly the primary area, ❑ only the reserve
area(check one)for Tract A-1 —A Family Division of TM 45-57A(Property ID).
Design Basis
Total length of available area: 70' Total width of available area: 70'
Estimated Perc. Rate: 55 at 48" in.(depth) Number of bedrooms(or GPD): 4
1 2
Conveyance Method : Gravi Distribution method (specify): Gravity
3c
Dispersal system basis Table 5.4 LGMI required? No (Yes/No)
Effluent quality required: Primary (Primary, Secondary,Advanced Secondary)
Square feet per bedroom: 412 Total trench bottom area required: 1648
Nor
Area Calculations
Number of trenches 8 Length of trenches:_70'
Width of trenches: 3' Center to center spacing: 9'
Reserve required? Yes Percent reserve area required: 100
Total width of absorption area required 66; Total trench bottom area provided: 1680
The required width is calculated by multiplying the center-to-center spacing by one less than the number
of trenches and adding 1 trench width plus any required reserve area. If the topography is not uniform
across the length of the site the trenches will need to flare apart on one end to maintain contour. When
this occurs it is necessary to use a center-to-center spacing that accounts for the flair or the installer will
not be able to fit the system within the approved area. It is perfectly acceptable to have more area
available,especially up and down the slope,than is required.
4"' Page of
AOSE Form E Revised July 18,2007
Soil Profile
Reserve Drain Field
Tract A-1
A Family Division of Tax Map 45-57A
Albemarle County
Hole Depth Horizon Material Description Soil Texture
(in.) Group
6 0-4 A Dark gray(10YR 4/1) sandy loam, friable 2
4-17 E Very pale brown(10YR 7/4) sandy loam, friable 2
17-54 C Yellow(10YR 7/8) sandy loam w/granite fragments 2
below 40"
54- Cr
7 0-4 A Dark gray(10YR 4/1) sandy loam, friable 2
4-16 E Very pale brown(10YR 7/4) sandy loam, friable 2
16-43 Cl Reddish yellow(7.5YR 6/8) sandy loam, friable 2
43-66 C2 Light yellowish brown(10YR 6/4) loamy sand w/granite 1
fragments
66- Cr
8 0-4 A Dark gray(10YR 4/1) sandy loam, friable 2
4-12 E Very pale brown(10YR 7/4) sandy loam, friable 2
12-42 C Yellow(10YR 7/8) sandy loam w/granite fragments 2
below 30"
�., 42- Cr
Page 0 of
Appendix 2
Soil Summary Report
Now
GENERAL INFORMATION
Date 7/25/15 Submitted to Albemarle County Health Department
Applicant Herman and Stella Morris Telephone Number
Address 2470 Rio Mills Road Earlysville, VA 22936
Owner same Address same
Location 2470 Rio Mills Road
Tax Map 45-57A Subdivision
Block/Section Lot A-1
SOIL INFORMATION SUMMARY - e t,e.- Q2tt'c Bea
1. Position in landscape satisfactory? X Yes No
Describe side slope
2. Slope 11 %
3. Depth to rock or impervious strata: Max. 66" Min. 42" None
4. Depth to seasonal water table(gray mottling or gray color) X No Yes inches
- Free water present X No ; Yes range in inches
`ufr Soil percolation rate estimated 'X Yes Texture group I �I III IV
No Estimated rate 45 min/inch
7. Permeability test performed Yes
X No
If yes, note type of test performed and attach
X Site Approved: Drainfield to be placed at 24" depth at site designated on permit.
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 depth of suitable soil to seansonal water table.
4. Rates of absorption too slow.
5. Insufficient area of acceptable soil for required drainfield, and/or Reverse Area.
6. Proposed system too close to well.
Other Specify
(attach additional pages if necessary)
?u ht 7 (S--F
Abbreviated Design Form
This form is for use with gravity,pump to gravity,enhanced flow,and low pressure distribution(LPD)sewage system
designs and when applying for a certification Ietter or subdivision approval.
This abbreviated design covers the ❑ primary and reserve area, ❑ only the primary area, -nly the reserve
area(check one)for Tract A-1 –A_Family Division of TM 45-57A(Property ID).
Design Basis
Total length of available area: 50' Total width of available area: 50'
Estimated Pere.Rate: 45 at 24'_' in.(depth) Number of bedrooms(or GPD): 4
2
Conveyance Method : Gravity Distribution method (specify): Gravity
3c
Dispersal system basis GMP 118A LGMI required? No (Yes/No)
Effluent quality required: Secondary (Primary, Secondary,Advanced Secondary)
Square feet per bedroom: – _ 152 Total trench bottom area required: 608
Area Calculations
Number of trenches 5 Length of trenches: 50'
Width of trenches: 3' Center to center spacing: 9'
Reserve required? This is reserve Percent reserve area required: 100
Total width of absorption area required 39' Total trench bottom area provided: 750
The required width is calculated by multiplying the center-to-center spacing by one less than the number
of trenches and adding 1 trench width plus any required reserve area. If the topography is not uniform
across the length of the site the trenches will need to flare apart on one end to maintain contour. When
this occurs it is necessary to use a center-to-center spacing that accounts for the flair or the installer will
not be able to fit the system within the approved area. It is perfectly acceptable to have more area
available,especially up and down the slope,than is required.
Page of
AOSE Form E Revised July 18,2007
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o • Tract A-1
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2 _ w w j'` Albemarle County,Virginia Zi
? 3 _ _ !'� Steve Gooch Consulting Geologist
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H w U 2 c _ c ti o Troy, Virginia 22974
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