Loading...
HomeMy WebLinkAboutSUB201700031 Study Final Plat 2017-02-21 �► APPIDIED Soils Study for Drain Field Sites Tract B-1 A Division of Tax Map 81-1OA Albemarle County Prepared for: Susan B. Johns and Michael Van Johns 396 Clarks Tract Keswick, VA 22947 Prepared by: Steve Gooch Consulting Geologist,Inc. 703 Oliver Creek Road Troy, Virginia 22974 February 21, 2017 Page 1 of 9 OSE/PE Report for: Construction Permit Certification Letter I I Subdivision Approval Property Location: 911 Address: 396 Clarks Tract City: Lot B-1 Section Subdivision GPIN or Tax Map# 81-10A Health Dept ID# Latitude Longitude Applicant or Client Mailing Address: Name: Susan B. Johns and Michael Van Johns Street: 396 Clarks Tract City:Keswick State VA Zip Code 22947 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 2/21/17 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 Forms Soil Profile Sheets Survey Plat Soil Information Summary Sheets Certification Statement 1 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. CThe 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): c nstruction permit❑ certification letters subdivision approval® v"r be(select one)issued denied Li. OSE/PE Signature --e Date 3'/zit 17 pos)e_ 2 c Soil Profile Primary Drain Field Tract B-1 A Division of Tax Map 81-10A Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 3 0-2 A Dark brown (7.5YR 3/3)loam, friable 2 2-7 EB Light brown (7.5YR 6/4) clay loam, friable 3 7-18 Bt Red (1OR 5/8) silty clay loam, firm 3 18-40 CB Reddish brown (2.5YR 5/4) silt loam, friable, red 3 (2.5YR 5/8) clay loam 40-84 C Light red (2.5YR 6/8) schist saprolite, crushes to silt loam 3 4 0-3 A Dark brown (7.5YR 3/3) loam, friable 2 3-10 EB Light brown(7.5YR 6/4) clay loam, friable 3 10-27 Bt Yellowish red (5YR 5/8)clay loam, friable 3 27-40 CB Reddish brown(2.5YR 5/4) silt loam, friable, red 3 (2.5YR 5/8) clay loam 40-84 C Reddish brown (2.5YR 5/4),yellowish red(5YR 5/8) schist 3 saprolite, crushes to silt loam, 10-20%deeply weathered schist fragments 5 0-3 A Dark brown(7.5YR 3/3) loam, friable 2 3-18 Bt Brown (7.5YR 5/4) clay loam, friable 3 18-41 BC Red(10R 5/8) silty clay loam, firm w/reddish brown 3 (2.5YR 5/4) schist saprolite (crushes to silt loam) 41-48 C Light red (2.5YR 6/8) schist saprolite, crushes to silt loam, 3 25%weathered schist fragments 48- Cr 6 0-7 A Brown(7.5YR 5/4) loam, friable 2 7-26 Bt Red (10R 5/8) silty clay loam, firm 3 26-60 C Light reddish brown (5YR 6/4) schist saprolite, crushes to 3 silt loam 7 0-4 A Dark brown (7.5YR 3/3) loam, friable 2 4-10 EB Light brown (7.5YR 6/4) clay loam, friable 3 10-35 Bt Red (2.5YR 5/8) clay loam, friable 3 35-60 C Light reddish brown(5YR 6/4) schist saprolite, crushes to 3 silt loam, 25%weathered schist fragments below 48" 8 0-7 A Brown (7.5YR 5/4) loam, friable 2 7-18 Bt Red(2.5YR 5/8) clay loam, friable 3 18-60 C Very pale brown(01YR 7/4) schist saprolite, crushes to 3 silt loam Noir Pc45e- 3 Soil Profile Primary Drain Field Tract B-1 A Division of Tax Map 81-10A Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 9 0-6 A Brown (7.5YR 5/4) loam, friable 2 6-30 Bt Red (10R 5/8) silty clay loam, firm 3 30-52 C Pale red (10R 6/4) schist saprolite, crushes to silt loam, 3 weathered schist fragments below 42" 52- Cr 10 0-4 A Dark brown(7.5YR 3/3) loam, friable 2 4-12 EB Light brown(7.5YR 6/4)clay loam, friable 3 12-26 Bt Yellowish red(5YR 5/8) clay loam,friable 3 26-60 BC Reddish brown(5YR 5/4) clay loam, friable w/light red 3 (2.5YR 6/8) schist saprolite, crushes to silt loam Page of Appendix 2 Soil Summary Report GENERAL INFORMATION Date 1/7/16 Submitted to Albemarle County Health Department Applicant Michael Johns Telephone Number (434)960-0589 Address P.O. Box 166 Keswick, VA 22947 Owner same Address same Location 396 Clarks Tract Tax Map 81-10A Subdivision Block/Section Lot Tract B-1 SOIL INFORMATION SUMMARY~ p<-wa^� ,a U 1. Position in landscape satisfactory? R. Yes [- No Describe shoulder 2. Slope 9 % 3. Depth to rock or impervious strata: Max. 84"+ min. 48" None 4. Depth to seasonal water table (gray mottling or gray color) No [- Yes inches Free water present IR No F- Yes range in inches "s� I Soil percolation rate estimated fR yes Texture group I II C) |V [- No Estimated rate 75 min/inch 7. Permeability test performed [— Yes [g No If yes, note type of test performed and attach 5-<- Site Approved: Drainfield to be placed at 30" depth at site designated on permit. r Site Disapproved: Reasons for rejection: 1. } Position in landscape subject to flooding or periodic saturation. 2. r Insufficient depth of suitable soil over hard rock. 3. E 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. G. [- Proposed system too close to well. ' F- Other Specify (attach additional pages if necessary) PC/ R? 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 Ci primary and reserve area, EiK;nly the primary area, 0 only the reserve area(check one) for Tract B-1 - A Division of TM 81-10A Design Basis Total length of available area: 60' Total width of available area: 85' Estimated Pere. Rate: 75 at 30" in. (depth) Number of bedrooms(or GPD): 3 1 2 Conveyance Method : Pump Distribution method (specify): Pump 3c Dispersal system basis Table 5.4_ LGMI required? No (Yes/No) Effluent quality required: (Primary, Secondary, Advanced Secondary) Square feet per bedroom: 596 Total trench bottom area required: 1788 Area Calculations Number of trenches 10 Length of trenches: 60' Width of trenches: 3' Center to center spacing: 9' Reserve required? Yes Percent reserve area required: 100 Total width of absorption area required 84' 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 Pc.1 0 f" Soil Profile Reserve Drain Field Tract B-1 A Division of Tax Map 81-10A Nisr Albemarle County Hole Depth Horizon Material Description Soil Texture (in.) Group 1 0-3 A Dark brown (7.5YR 3/3) loam, friable 2 3-15 Bt Brown(7.5YR 5/4) clay loam, friable 3 15-30 Cr Yellowish brown(10YR 5/8) clay loam, friable, 50%+ 3 schist channers 2 0-2 A Dark brown (7.5YR 3/3) loam, friable 2 2-13 Bt Brown(7.5YR 5/4) clay loam, friable, 25% schist 3 channers 13-24 Cr Light olive brown (2.5Y 5/3) silt loam, 50%+ schist 3 charmers 24- Cr 5 0-3 A Dark brown (7.5YR 3/3) loam, friable 2 3-18 Bt Brown(7.5YR 5/4) clay loam, friable 3 18-41 BC Red(10R 5/8) silty clay loam, firm w/reddish brown 3 (2.5YR 5/4) schist saprolite (crushes to silt loam) 41-48 C Light red (2.5YR 6/8) schist saprolite, crushes to silt loam, 3 25% weathered schist fragments 48- Cr 10 0-4 A Dark brown(7.5YR 3/3) loam, friable 2 4-12 EB Light brown (7.5YR 6/4) clay loam, friable 3 12-26 Bt Yellowish red(5YR 5/8) clay loam, friable 3 26-60 BC Reddish brown (5YR 5/4) clay loam, friable w/light red 3 (2.5YR 6/8) schist saprolite, crushes to silt loam Page _2_ of Appendix 2 Soil Summary Report GENERAL INFORMATION Date 1/7/16 Submitted to Albemarle County Health Department Applicant Michael Johns Telephone Number (434) 960-0589 Address P.O. Box 166 Keswick, VA 22947 Owner same Address same Location 396 Clarks Tract Tax Map 81-10A Subdivision Block/Section Lot Tract B-1 SOIL INFORMATION SUMMARY- 93.00)ext,..e_ (0(241,4. 1. Position in landscape satisfactory? Yes r No Describe shoulder 2. Slope 9 °A 3. Depth to rock or impervious strata: Max. 60"+ Min. 13" None 4. Depth to seasonal water table(gray mottling or gray color) ig No E Yes inches - Free water present rg No E Yes range in inches •Ner Soil percolation rate estimated fg Yes Texture group I II i3 IV No Estimated rate 75 min/inch 7. Permeability test performed E Yes fg No If yes, note type of test performed and attach ig Site Approved: Drainfield to be placed at 6" depth at site designated on permit. Site Disapproved: Reasons for rejection: 1. E Position in landscape subject to flooding or periodic saturation. 2. 1- Insufficient depth of suitable soil over hard rock. 3. 1- Insufficient depth of suitable soil to seansonal water table. 4. E Rates of absorption too slow. 5. r" Insufficient area of acceptable soil for required drainfield, and/or Reverse Area. 6. 1- Proposed system too close to well. r 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, 0 only the primary area, [ ,only the reserve area(check one)for_Tract B-1 —A Division of Tax Map 81-10A). Design Basis Total length of available area: 90' Total width of available area: 40' Estimated Perc. Rate: 75 at 6" in. (depth) Number of bedrooms(or GPD): 3 1 2 Conveyance Method : Pump Distribution method (specify): Pump 3c Dispersal system basis Table 5.4(LPD) LGMI required? No_(Yes/No) Effluent quality required: Advanced Secondary (TL 3) (Primary, Secondary, Advanced Secondary) Square feet per bedroom: 375 Total trench bottom area required: 3375 Area Calculations Number of trenches 19 Length of trenches: _90' 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 36' Total trench bottom area provided:_3420 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 I ' 415 II PLAT NOT FOR RECORDATION HEALTH DEPARTMENT COPY wWINC CONTROL POINTS NOT FOR RECORDATION TO SUBMETER ACCURACY TIED TO NORTH AMERICAN DATUM OF 1983 (NAO83? , VIRGINIA SOUTH SPC TIE LINE N81 '11123"E fee, . 9.54' s North 11832276 FUND \ -4024o STATE ROUTE 648 \ \ CLARKS TRACT - (30'PRESCRIPTIVE EASEMENT) ",A \ . 'STRIP �`,� (D.8.166527 4 PLAT) .,/°' EXISTING � \` �i ,� . ENTRANCE \ �\ T.M.81-6 IRON\ \\ GERALD 0.KNIGHT 8 SET .CAROLYN L.KNI3HT .��,s • � 0.6.522-33 .., ,r. �, 4 D.8.450-444 PLAT T.M.8i—iQA a ��,N a° ti. TRACT B D.8.823-633. 636 PLAT w ' +r DAVID 81-8F RR B.JOHNS 6 MICHAEL V.JOHNS \ T.M. M.BERRY 6 'SIDUE= 23.00+/- ACRES , k. b0. �S t`0\ '' ;'\*\ p,p 39 B. BERRY23 CTION FROM TAXATION RECORDS) '. „s30• TRACT B—i `P 40N `t 0,8.809-448 PLAT ACRES �a.B.80s 56 North 3698081 IRON Fa ,AA c - ti 4 N East 11532164 SET ` 4 IRON \\\ 1Ns\ 5>, ! sET �r ���, � �� FLAG ® U1, a North 3898094 �, w• a East /1532603 N. \ 474 ,7 1 isi i Primal? FLA,; 1 l �' k •'.i'9 ..t. A. `i f1iSr[L( V y© FLAQ' N ' Scale 1"= 100' Soil Profile Hole '.� � � c � �' '. House, Well and Drain Field Sites Tract B-1 ©ON TE '• • , IRON Clarks Tract SAO DION �, Albemarle County,Virginia North 3897684 Steve Gooch ConsultingGeologist 'I it`G� East 1153233.8 gi 703 Oliver Creek Road i ... :" / Troy, Virginia 22974 Soil Profile Tract B (Residue) A Division of Tax Map 81-10A Albemarle County Health Department Permit ID#SD-86-0014 shows a reserve area for the drain field for the existing house.