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Lot 4 -51A Plan Review 2016 PLAN REVIEW- SYSTEM COMPONENTS �lofrr� 0 ,f Application No. ,20/6—/ City/Town Lot Number I.pf f Address 7 73 OWNER NAME A e, 747 OWNERT / 5 Of ADDRESS / �C TELEPHONE# ( H/3 ) 3�6 "Y6 DESIGN /e PW�.y ENGINEER\SANITARIAN _ FACILITY DESIGNED FOR A, Single or Multifamily dwelling NORTHAN BOARD OF HEALTH 212 MAIN PMPTOO E MA 01060 #Bedrooms Garbage Disposal yes NOR.THAM no f Total Design Flow '77 D gallons per day ! M F FI•-!f B. Other(describe) Design Basis Total Design Flow y20 gpd ``// COMMENTS or PROBLEMS: kit/ C©A)51ThiA4 Pager I of 16 BUILDING SEWER ITEMS TO NOTE: Pipe diameter /n Schedule of pipe �1 D r �� V Watertight joints Ve Slope(min for 4" pipe is 0.01 or 1/8" per foot; desired slope is 0.02 or 'A"per foot) p �^ Invert elevation at building I i c. 42 }—� y�✓j/, no / >io 11 y9 96 Length 8.7 ///7 O0l) % re I. 7'(1 . Alignmentand grad$ (manholess required et anges in both ligament and grade.) Manhole (Must have metal frame and cover at grade) Pager 2 of 16 SEPTIC TANK Tank size at least 200 % of design flow (minimum tank size is 1,500 gal) ,;() 11 /.0 2"-3"drop from inlet to outlet 9y Minimum 4' liquid depth 1/9/1/ r 66 6✓ A. Tees extend 6" above flow line . Inlet tee 10"below flow line(minimum) b"--- Air space(3"above tees,9" above flow line) Depth of outlet tee(minimum 14") � / V Access manhole over center of tank and each tee ler Number of compartments= 2 Gas baffle on new construction Septic tank detail provided Buoyancy calculation (if necessary) /qa D�i iO/o5 • On 6" crushed stone Pager 3 of 16 DISTRIBUTION BOX ITEMS TO NOTE: r G� •� Inlet elevations 2 3 /-0 Outlet elevations X39 5 /0 Drop (inlet- outlet) I 20 Sump (6" minimum) Baffle or inlet tee All outlets at same elevation ventilation Manhole cover to grade ft of outlets size of outlets (diameter) Distribution laterals: No. Size Detail Provided Pager 4 of 16 LEACH FIELD Items to note: 4 ' Dimension of field(s): Length , Width Number of fields / Field separation (10 ft. min) se Total area provided for disposal c O 3 (sq. ft.) (1 x w x no. of fields) "Gallons of treatment provided: /' Bottom area x loading factor(from 15.242)= T IMO gal. (must be egdhl or greater than design flow) 77i /' PP X CC Note: Leaching area must be increased if garbage grinder is used. /07LO Elevation of bottom of the field /` r: 6'95 6'G L 6 ) (must be 4 ft/or 5 ft above max.high groundwater depending on perc rate.) 6✓ Number of distribution pipes 4 1(1. 5 ✓Type 44~ ?VC /Length (100'max.) Slope(min. 0.005) .02 593 s7-7 Spacing(6' max.) Depth of stone beneath pipe a�s5 /JJ Plan n 6") ��� V o f 3r6.-9) ��states stone is double washed � T(/ > _ 2" cover of 1/8" to %"stone over pipe crown v beEnds capped Pr/Aggregate depth 6"minimum and 12"maximum „ /Depth of cover material above stone (min.9") '' /0 /{/ Construction of leaching facility in fill? Yes No V V Fill is specified as Titley on plan /� Certification on fill submitted Fill is specified for 5' around entire system reparation between lines (6 ft maximum) Separation between lines and edge of bed- four feet maximum. Pager 5 of 16 /� LEACHING TRENCHES ✓ tuber of trenches ,length (max.100')width_(min.24) !/ Depth of stone beneath pipe (6"min) /teaching area available bottom=length x width x no. trenches= sides=length x depth (2'max)x w x# of trenches sq ft. TOTAL= rlD3 sq ft. note: the effective depth shall be equal to the depth of the trenches below the invert of the distribution pipe up to maximum of 2 ft. Leaching are requirements: Total leaching area(bottom plus sides) x loading factor= gallons treated Loading factor is based on perc rate(see 15.242) Total gallons treated by system design must be>design flo�y for system LEACHING AREA REQUIREMENTS SATISFIED?Yes t_/ ,No (note: leaching area must be increased if garbage grinderinis used) ?en ea- Ground water elevation: 4 feet or 2(5 feet separatioi [d</pt rr fr„7bEtSceen trench bottom and max. high gro dwater. Trspacing 3 x effective width or depth whichever is greater reach width 4 ft maximum ota pe slope (min.0.005 slope, or 6"per 100 feet) zV)ackfill depth (min. of 9") ✓ Ends capped �stribution lines exceeding 50 ft are vented. �ameter of distribution pipe_(min.3") virisbution line orifice (min. 3/8, max ") ✓The area between trenches shall be designated as reserve area only where separation distance between the excavation sidewalk is at least six feet. fill is specified as Title V on plan [cation on Fill submitted is specified for 5" around entire system _viPager 6 of 16 PLAN REVIEW CHECKLIST GENERAL INFORMATION CHECK TO VERIFY THAT THE PLAN INCLUDES THE FOLLOWING REQUIRED INFORMATION: /M�ASS.REG. SANITARIAN,or MASS. P.E. stamp and sign e // of 1"=40' for plot plan 7l__ Scale of 1"=20' for system component details !i Legal boundaries of the facility being served including easements which could affect the impact the system installation/performance. Ail dwellings,buildings existing and proposed impervious areas � Location of all existing and proposed impervious areas Z Location and dimensions of the system including reserve area !/ Design calculations: Sewage flow gpd Septic tank size required gpd " .. "provided gpd t✓ North arrow,existing and proposed contours _ Locati n and log of deep hole observation test 6��� date test •existing grade elevations for each test Pager 7 of 16 PLAN REVIEW CHECKLIST(cont.).)� >) _y Name of approving authority representative • Wa6•✓ 1.---Name& approval no.of soil evaluator . 4 I BW /Location and results of perc test 4 Date of perc test I/ Location of water lines and other subsurface utilities on facility "Observed groundwater elevation in vicinity of the system complete profile of the system Z.../X note on the plan listing all variances to the provisions of 310 CMR 15.00 and local requirements sought in conjunction with the plan PA Location and elevation of benchmark within 50 to 75 feet of the facility ,/// which is not subject to dislocation or loss during conjunction of the facility If dosing system is proposed: complete design and specifications of the system _ dosing chamber capacity; required , provided number of dosing cycles, depth of cycles Pager 8 of 16 PLAN REVIEW CHECKLIST (CON'T) Recirculating Sand Filters Complete plans and specifications hydraulic profile location of the treatment works and nearest existing street _ street and lot number Pager 9 of 16 DOSING TANK Dimensions L x W x D=Vol. Number/size of siphons _ Number and size of pumps (No. ,Capacity gpm Discharge size Manholes to grade Groundwater elevation(min. 1 ft below inlet) Pump controls Alarm(on separate power circuit) Buoyancy calculations (if needed) Pump system calculations Pager 10 of 16 LEACHING CHAMBERS/PITS ITEMS TO NOTE Manufacturer Installation Bed Formation Number of beds of trenches Length Width Depth Leaching area available: bottom: (length x width x no.of pits)= sides: (2 x (length x depth (2'max.)+(2 x(width x depth (2'max)x#of pits. Total leaching area available= sq. ft. LEACHING AREA REQUIREMENTS: Total leaching area(bottom+sides)x loading factor from 15.242 = gals. This must be greater than or equal to the design flow for the system. Increase leaching area if garbage grinder is used. Distribution Trenches: every 20 feet Beds: area for pipe not to exceed 60 x 60 feet Spacing Trenches: 2 x effective depth or width Beds: 4 feet between excavation sidewalls. Manholes (min -one 20"access per unit; a 24" diam for> 2,000 gal units) Stone around chamber('12"to 48" of''" to 1 %"stone) 2" cover of 1/8"to 'A"stone 4' separation between max. high GW and trench bottom? Yes_No Pager II of 16 PLAN REVIEW- SYSTEM SITING Performed By Approval# Witnessed By Date Location Address or Owner's Name, Lot Number: Address and Telephone No. Office Review Published Soil Survey: NO YES Year Published Publication Scale Soil Map Unit Drainage Class Soil Limitations Surficial Geologic Report Available: No Yes Year Published Publication Scale Geologic Material(Map Unit) Landform Flood Insurance Rate Map: Above 500 year flood boundary No_ Yes Within 500 year boundary No_ Yes Within 100 year flood boundary No_ Yes Pager 12 of 16 Wetland Area: National Wetland Inventory Map (map unit) Wetlands Conservancy Program Map(map unit) Current Water Resource Conditions(USGS): Month Range: Above Normal_ Normal Below Normal_ Other References Reviewed: Minimum setback distances (where applicable)shall be shown on the plan for the proposed disposal facility(septic tank and soil absorption system.) Soil Absorption Septic Tank System (SAS) Property line 10 10 Cellar waWinground swimming pool 10 20 Slab Foundation 10 25 Water supply pressure line 10 10 Surface waters (except wetlands) 25 50 Pager 13 of 16 Septic Tank SAS Bordering vegetated wetlands,salt marshes, inland and coastal banks 25 50 SURFACE WATER SUPPLY Reservoirs and impoundments 400 400 Tributaries to SWS 200 200 Wetlands bordering SWS or tributaries thereto 100 100 Certified Vernal Pools 100 100 Private water supply well or suction line 50 100 PUBLIC WATER SUPPLY WELL _Gravel packed 400 400 _Tubular 250 250 Irrigation well 10 25 Open,subsurface, or surface drains which discharge to SWS or tributaries thereto 50 100 Pager 14 of 16 Soil Absorption Septic Tank System _Other open,surface or subsurface drains(ex- cluding foundation drains) which intercept seasonal high groundwater 25 50 _Other open,surface of subsurface drains(ex- cluding foundation drains 5 10 _Leaching and catch basins& drywells 10 25 _Downhill slope N/A 15' (min) to top of 3:1 slope Inspection Port(s) _Magnetic Tape _Correct#of deep bole per code revision Note: slope stabilization shall be provided(including retaining walls)when an adjacent downhill slope to a disposal facility is greater than 3:1. Pager 15 of 16 EFFLUENT LOADING RATES (gpd/sq. ft./day) PERC.RATE SOIL CLASS (min./in.) CLASS I CLASS II CLASS III CLASS IV <5 0.74 0.60 - - 6 0.70 .0.60 - - 7 0.68 0.60 - - 8 0.66 0.60 - - 10 - 0.60 - - 15 0.56 0.37 - - 20 0.53 0.34 - - 25 - 0.40 0.33 - 30 - 0.33 0.29 - Loading criteria listed below apply only to the upgrade of existing systems pursuant to 310 CMR 15.405 (1)(c)or systems constructed pursuant to 310 CMR 15.417 40 - - - 0.25 60 - - - 0.15 Pager 16 of 16