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HomeMy WebLinkAboutSUB202000119 Soils Study 2020-06-17Soils Study for Drain Field Sites Parcel A and Residue A Rural Subdivision of Tax Map 114-31E Albemarle County SUB2020-119 Prepared for: Longwood Estate LLC c/o Wood Rogers PLC 123 East Main Street 5th Floor Charlottesville, VA 22902 Prepared by: Steve Gooch Consulting Geologist, Inc. 703 Oliver Creek Road Troy, Virginia 22974 June 12, 2020 Page 1 of 8 OSE/PE Report for: Construction Permit FI Certification Letter F] Subdivision Approval Q Property Location: 911 Address: 654 Buck Mountain Road Lot A Section GPIN or Tax Map # 19-9 Latitude City: Subdivision Health Dept ID # Longitude Applicant or Client Mailing Address: Name: Longwood Estate LLC c/o Wood Rogers PLC Street: 123 East Main Street, 5th Floor City: Charlottesville State VA Zip Code 22902 Prepared by: OSE Name Steve Gooch Address 703 Oliver Creek Road City Troy PE Name: Address City License # 1940001284 State VA Zip Code 22974 License # State Zip Code Date of Report 6/8/20 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 Soil Profile Sheets Soil Information Summary Sheets Abbreviated Design Forms Plat 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. The work attached to this cover page has been conducted under an exemption to the practice of engineering, specifically the exemption in Code of Virqinia Section 54.1-402.11 I recommend that a (select one). nstruction permit certification letter subdivision approval be (select one) issued denied . OSE/PE Signature �'✓�"�.l?�ll� .,� Date 6��1zo Soil Profile Q"13r- Z� Primary Drain Field Parcel A A Division of Tax Map 19-9 Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 6 0-2 A Dark gray (1 OYR 4/ 1) loam, friable 2 2-8 A2 Brown (7.5YR 4/2) clay loam, friable 3 8-32 Bt Red (I OR 5/8) silty clay loam, firm 3 32-60 Cl Yellowish red (5YR 5/8) sandy clay loam, friable 2 60-84 C2 Yellowish brown (I OYR 5/8) sandy loam, friable 2 7 0-2 A Dark gray (I OYR 4/ 1) loam, friable 2 2-12 A2 Brown (7.5YR 4/2) clay loam, friable 3 12-22 Bt Red (I OR 5/8) silty clay loam, firm 3 22-57 BC Red (2.5YR 5/8) clay loam, dark yellowish brown 3 (1 OYR 4/6) loam, 10-15% weathered schist fragments 8 0-2 A Dark gray (1 OYR 4/ 1) loam, friable 2 2-10 A2 Brown (7.5YR 4/2) clay loam, friable 3 10-27 Bt Red (I OR 5/8) silty clay loam, firm 3 27-84 C Yellowish red (5YR 5/8) sandy clay loam, friable 2 9 0-6 A Brown (7.5YR 5/4) clay loam, friable 3 6-14 EB Reddish yellow (7.5YR 6/8) clay loam, friable 3 14-35 Bt Red (I OR 5/8) silty clay loam, firm 3 35-84 C Reddish brown (2.5YR 5/4) sandy loam, friable 2 10 0-2 Al Light gray (I OYR 6/1) sandy loam, friable 2 2-10 A2 Light brown (7.5YR 6/4) clay loam, friable 3 10-32 Bt Reddish brown (2.5YR 5/4) clay loam, friable 3 32-48 BC Red (I OR 5/8) silty clay loam, yellowish red (5YR 5/8) 3 sandy loam, firm 48-77 C1 Yellowish red (5YR 5/8) sandy loam, friable 2 77-84 C2 Brownish yellow (I OYR 6/8) loamy sand, very friable 1 Page �7 of _7 Appendix 2 Soil Summary Report GENERAL INFORMATION Date 5/5/20 Submitted to Albemarle County Health Department Applicant Longwood Estate, LLC c/o Wood Rogers PLC Telephone Number (832) 244-5033 Address 123 East Main Street 5th Floor Charlottesville, VA 22902 Owner same Address same Location 654 Buck Mountain Road Tax Map 19-9 Subdivision Block/Section Lot A SOIL INFORMATION SUMMARY - nmcA 1. Position in landscape satisfactory? Ix Yes F- No Describe shoulder 2. Slope 10 % 3. Depth to rock or impervious strata: Max. Min. None x 4. Depth to seasonal water table (gray mottling or gray color) IX No r Yes inches 5. Free water present [X No I— Yes range in inches 6. Soil percolation rate estimated FX- Yes Texture group I II Ili IV f No Estimated rate 50 min/inch 7. Permeability test performed F Yes r No If yes, note type of test performed and attach Ix Site Approved: Drainfield to be placed at 60" depth at site designated on permit. f Site Disapproved: Reasons for rejection: 1 • F- Position in landscape subject to flooding or periodic saturation. 2. r Insufficient depth of suitable soil over hard rock. 3. r Insufficient depth of suitable soil to seansonal water table. 4• F- Rates of absorption too slow. 5. F- Insufficient area of acceptable soil for required drainfield, and/or Reverse Area. 6. I— Proposed system too close to well. 7. I— Other Specify (attach additional pages if necessary) F,4"N,&-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 letter or subdivision approval. This abbreviated design covers the ❑ primary and reserve area, manly the primary area, ❑ only the reserve area (check one) for Parcel A — A Division of Tax Map 19-9 Design Basis Total length of available area: 70' Total width of available area: 110, Estimated Pere. Rate: �50 at 60" in. (depth) Number of bedrooms (or GPD): 5 1 2 Conveyance Method : Pump Distribution method (specify): Pump 3c Dispersal system basis Table 5.4 Effluent quality required: Primary Square feet per bedroom: 376 _ Area Calculations Number of trenches 9 Width of trenches: 3' Reserve required? Yes LGMI required? No (Yes/No) (Primary, Secondary, Advanced Secondary) Total trench bottom area required: 1880 Length of trenches: 70' Center to center spacing: 9' Percent reserve area required: 100 Total width of absorption area required 75' Total trench bottom area provided: 1890 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 Soil Profile JJ Reserve Drain Field Parcel A A Division of Tax Map 19-9 Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 1 0-2 A Dark gray (I OYR 4/ 1) loam, friable 2 2-9 A2 Brown (7.5YR 4/2) clay loam, friable 3 9-36 Bt Red (I OR 5/8) silty clay loam, firm 3 36-52 C1 Yellowish red (5YR 5/8) sandy clay loam, friable 2 52-84 C2 Reddish yellow (7.5YR 6/8), yellowish brown 2 (I OYR 5/8) sandy loam, friable 2 0-3 A Dark gray (1 OYR 4/ 1) loam, friable 2 3-20 EB Reddish yellow (7.5YR 6/8) sandy loam, friable 2 20-46 Bt Red (1 OR 5/8) silty clay loam, firm, yellow (I OYR 7/8) 3 mottles 46-62 Bt2 Red (2.5YR 5/8) sandy clay loam, friable 2 62- - Quartz 3 0-3 A Dark gray (1 OYR 4/ 1) loam, friable 2 3-9 E Light brown (7.5YR 6/4) sandy clay loam, friable 2 9-36 Bt Red (I OR 5/8) silty clay loam, firm 3 36-72 BC Red (2.5YR 5/8) clay loam, yellowish red (5YR 5/8) sandy 3 loam, friable 72-84 C Olive (5Y 5/4) schist saprolite, crushes to loam, 25% 2 weathered schist fragments 4 0-2 A Dark gray (1 OYR 4/1) loam, friable 2 2-8 E Light brown (7.5YR 6/4) sandy clay loam, friable 2 8-24 BC Reddish brown (2.5YR 5/4) clay loam, 40% hard, 3 weathered schist fragments 24- R 5 0-2 A Dark gray (1 OYR 4/ 1) loam, friable 2 2-10 E Light brown (7.5YR 6/4) sandy clay loam, friable 2 10-48 Bt Red (I OR 5/8) silty clay loam, firm 3 48-84 C Yellowish red (5YR 5/8) sandy clay loam, friable 2 Page (a of (� Appendix 2 Soil Summary Report GENERAL INFORMATION Date 5/5/20 Submitted to Albemarle County Health Department Applicant Longwood Estate, LLC c/o Wood Rogers PLC Telephone Number (832) 244-5033 Address 123 East Main Street 5th Floor Charlottesville, VA 22902 Owner same Address same Location 654 Buck Mountain Road Tax Map 19-9 Subdivision Block/Section Lot A SOIL INFORMATION SUMMARY - fle 1. Position in landscape satisfactory? fx Yes F- No Describe shoulder 2. Slope 14 % 3. Depth to rock or impervious strata: Max. 84�1+ Min. 24" None 4. Depth to seasonal water table (gray mottling or gray color) FX- No f- Yes inches 5. Free water present fx No f- Yes range in inches 6. Soil percolation rate estimated IX Yes Texture group 1 II III IV F- No Estimated rate 120 min/inch 7. Permeability test performed f- Yes fx No If yes, note type of test performed and attach IX Site Approved: Drainfield to be placed at 12" depth at site designated on permit. I- Site Disapproved: Reasons for rejection: 1 - F- Position in landscape subject to flooding or periodic saturation. 2- F- Insufficient depth of suitable soil over hard rock. 3. I— Insufficient depth of suitable soil to seansonal water table. 4. f Rates of absorption too slow. 5• f- Insufficient area of acceptable soil for required drainfield, and/or Reverse Area. 6• f Proposed system too close to well. 7. I- Other Specify (attach additional pages if necessary) 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, ❑ only the primary area, G"only the reserve area (check one) for Parcel A — A Division of Tax Map 19-9 Design Basis Total length of available area: 100, Total width of available area: 130' Estimated Perc. Rate: 120 at 12" in. (depth) Number of bedrooms (or GPD): 5 Conveyance Method: Pump Distribution methodZ (specify): Pumn 3c Dispersal system basis AOSS reps LGMI required? No (Yes/No) Effluent quality required: Advanced Secondary (TL 3) (Primary, Secondary, Advanced Secondary) Square feet per bedroom: 1364 Linear loading rate — 0.11 gpd/sq.ft Area Calculations Number of trenches 35 Width of trenches: 1" Reserve required? This is reserve Total width of absorption area required 68' Total trench bottom area required: 6818 Length of trenches: 100' Center to center spacing: 2' Percent reserve area required: 100% Total trench bottom area provided: 7000 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 gpC � p^5 GRZO NOgtH W � Ma J � .Q m 5N Q 0 mV ¢eat r1-H�WYm'1N-` W ��L�iJYm �i" mo N 00 O W Fa RM , OAmm¢ v•„� dW >H F O W NZN m / ,g6 96 �� q•0�_lg� o n<o 6� •'J� W g h O1- N I•l i•o; m N� n 4i mn N m .• 4 O I .•� Z , ' '\hh it, m v ¢i t-I � I d l to do �/I I .m t 1 e9t ti��ti ¢i¢m y U :•-� W QG�Q�y J2JP � M O Q?QG 00 �N 4. Q '� �•jaP L �Y rl vCC W ¢¢!! 1 o— oU•cV'2 v c y r Qj m'• N a �\ O N NS W h FP N O Z U O a m 1 � \ \ice � r j au a Q J G a0 m v ZF / O ti eiaWtiN 'O W m. 5 W m m !; n fLY �m m o >: m p Z JN O O m Z Z ¢fdmm M O my m v O y '�• i I Omm" , 0 Nu� N 2P^% •`�V PO ��o Q tl3:jjn9 WV3tl15 OOt WV3815 NDI1tl�0� 31tlW1xOkiddtl� N e3j'-'netl � N tljW 3 S.00ti O1 QwNoaalx � a�H mlOnmO~ WUW".2NMww ' ~Q x a Ino I dui¢ W H +omopmo 'n"aoo� UQ ND m LL J m WO m ¢W O Y m •SAM `mS.o42P a¢yo� pt4-.Y.- rtC- 8 Page 1 of 6 OSE/PE Report for: Construction Permit 0 Certification Letter El Subdivision Approval 17 Property Location: 911 Address: 654 Buck Mountain Road Lot Residue Section GPIN or Tax Map # 19-9 Latitude City: Subdivision Health Dept ID # Longitude Applicant or Client Mailing Address: Name: Longwood Estate LLC c/o Wood Rogers PLC Street: 123 East Main Street, 5th Floor City: Charlottesville State VA Zip Code 22902 Prepared by: OSE Name Steve Gooch License # 1940001284 Address 703 Oliver Creek Road City Troy State VA Zip Code 22974 PE Name: License # Address City State Zip Code Date of Report 6/8/20 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 Soil Profile Sheet Soil Information Summary Sheet Abbreviated Design Form Plat Albemarle County GIS Map 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. ❑ The work attached to this cover page has been conducted under an exemption to the practice of engineering, specifically the exemption in Code of Virqinia Section 54.1-402.11 I recommend that a (select one): nstruction permit certification letter subdivision approval❑✓ be (select one) issued denied U . OSE/PE Signature 6� ./, =& Date 6/z12o Soil Profile Reserve Drain Field �4ye- Residue Z air - A Division of Tax Map 19-9 Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 1 0-5 A Dark gray (1 OYR 4/ 1) loam, friable 2 5-29 Bt Red (I OR 5/8) silty clay loam, firm 3 29-67 C1 Yellowish red (5YR 5/8) sandy clay loam, red (2.5YR 5/8) 3 clay loam, friable 67-84 C2 Reddish yellow (7.5YR 6/8) sandy loam, friable 2 2 0-4 A Brown (7.5YR 4/2) clay loam, friable 3 4-23 Bt Red (I OR 5/8) silty clay loam, firm 3 23-40 C1 Yellowish red (5YR 5/8) sandy clay loam, friable 2 40-84 C2 Very pale brown (I OYR 8/3) loamy sand, very friable 1 3 0-3 A Brown (7.5YR 4/2) clay loam, friable 3 3-27 Bt Red (I OR 5/8) silty clay loam, firm 3 27-60 Bt2 Red (2.5YR 5/8) clay loam, friable 3 60-84 C Yellowish red (5YR 5/8) sandy loam, friable 2 4 0-4 A Brown (7.5YR 4/2) clay loam, friable 3 4-32 Bt Red (I OR 5/8) silty clay loam, firm 3 32-84 C Yellowish red (5YR 5/8) sandy clay loam, friable 2 5 0-4 A Dark gray (1 OYR 4/ 1) loam, friable 2 4-31 Bt Red (I OR 5/8) silty clay loam, firm 3 31-84 C Brownish yellow (1 OYR 6/8) sandy loam, friable 2 Page —L of (a Appendix 2 Soil Summary Report GENERAL INFORMATION Date 5/5/20 Submitted to Albemarle County Health Department Applicant Longwood Estate, LLC Telephone Number (832) 244-5033 Address c/o Wood Rogers PLC 123 East Main Street, 5th Floor Charlottesville, VA 22902 Owner same Address same Location 654 Buck Mountain Road Tax Map 19-9 Subdivision Block/Section Lot Residue SOIL INFORMATION SUMMARY 1. Position in landscape satisfactory? rx Yes r- No Describe shoulder 2. Slope 8 % 3. Depth to rock or impervious strata: Max. Min. None x 4. Depth to seasonal water table (gray mottling or gray color) rx No F Yes inches 5. Free water present X No I- Yes range in inches 6. Soil percolation rate estimated fx Yes Texture group 1 II III IV f No Estimated rate 55 min/inch 7. Permeability test performed I- Yes FX No If yes, note type of test performed and attach Site Approved: Drainfield to be placed at 48„ depth at site designated on permit. f- Site Disapproved: Reasons for rejection: 1. F_ Position in landscape subject to flooding or periodic saturation. 2. i— Insufficient depth of suitable soil over hard rock. 3. i— Insufficient depth of suitable soil to seansonal water table. 4. f Rates of absorption too slow. 5. F Insufficient area of acceptable soil for required drainfield, and/or Reverse Area. 6. F_ Proposed system too close to well. 7. r Other Specify (attach additional pages if necessary) ?G'r- y U� (.0 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, ❑ only the primary area, u4nly the reserve area (check one) for Residue — A Division of Tax Map 19-9 Design Basis Total length of available area: 100, Total width of available area: 11.0, Estimated Perc. Rate: 55 at 48" in. (depth) Number of bedrooms (or GPD): 2 1 2 Conveyance Method : _Pump_ Distribution method (specify):__ PumR_ 3c Dispersal system basis Table 5.4 Effluent quality required: Primary Square feet per bedroom: 412 _ Area Calculations Number of trenches 6 Width of trenches: 3' Reserve required? This is reserve LGMI required? No (Yes/No) (Primary, Secondary, Advanced Secondary) Total trench bottom area required: 1648 Length of trenches: 100' Center to center spacing: 9' Percent reserve area required: 200 Total width of absorption area required 48' Total trench bottom area provided: 1800 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 H W o Ua N aa� cc� ��p �Mos �. (n °Cnowt, �m / z NN wH o ZINC, o u)u... �� v,.., ozw F... o. 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NOTE: SEE PAGE 6 OF 6 FOR LOCATION OF RESERVE DRAIN FIELD WITH RESPECT TO EXISTING HOUSE Scale 1"= 100' •- Soil Profile Hole Proposed Reserve Drain Field Site 654 Buck Mountain Road Residue A Division of Tax Map 19-9 Albemarle County, Virginia Steve Gooch Consulting Geologist 703 Oliver Creek Road Troy, Virginia 22974 0 W 0 0 -i -A. N W ... m L) N Q CA O.F- M w `D~aX QCD M < M ocnHw CL(D <�' Mx0CCa QH Ho zCn W4 " i)Q> "C9dCL Wt'n�"� inz~4 >W> HH 1���F- H� Xz�-WU)� mM2Fa44~�V 60—"w zmxw U o M J.J ccwa�-- Unwmo N J � Nx aka CO3: 1 WQ W� e-1 Cn H cQ W U a -J En w r a r Ua W D 0 0 x Ca z 0 J co LL 0 r w w O rnul N �+ N M .°czmo ` cr�'m caYew_wL! �Cr -j�"Vn 3toWdQ cc cc wD�—w 0 a x h a x U cal 6/6/2020 County of Albemarle - GIS-Web - Map Help (Help,aspx?application=GISWEBApp&functiontabs=search,selection,legend,location,markup,share) L i cn J N 5300 S wner. % & N N N 113 e EXISTING WELL (APPROX.) Vilatet Z_ ti s Sri rr 4 b EXISTING DRAIN FIELD (APPROX.) -j PROPOSED 200% RESERVE DRAIN FIELD AREA 1.4 Buck Mountain Rd 5, (580 45r W. 7--o' n19 --17 33 � i�554 v Not to scale - *IV Proposed Reserve Drain Field Site 654 Buck Mountain Road B 2 5 501L 5.1.0 1 (production) hftps://gisweb Leaflet (http://leafletjs.com) I Albemarle County OF 1/2