Item5Appendix1bPlans20200077MSC

CAIRNGORMS NATION­AL PARK AUTHOR­ITY Plan­ning Com­mit­tee Agenda Item 5 Appendix Ib 26/02/2021

AGENDA ITEM 5

APPENDIX ТЬ

2020/0077/MSC

PLANS

BVZRE KAVEL Con­nec­tion to exist­ing field drain KEY 2380- 239.50 Site Bound­ary Topo­graph­ic­al Sur­vey Con­tours 0.50m Pro­posed Fin­ished Con­tour Pro­posed Sur­face Water Sew­er Pro­posed Foul Water Sew­er Pro­posed Sep­tic Tank Pro­posed Mound Fil­ter Sys­tem Pipe Pro­posed Fil­ter Strip Pro­posed Fil­ter Drain Pro­posed Fil­ter Trench ACO Chan­nel Pro­posed Ditch Pro­posed Reed Bed Sys­tem Pro­posed Ditch Align­ment OVER­HEAD CABLES Recyc­ling B Water Stor­age 241.53 4No. Feed Bins Sheep Build­ing Area 870m² 4241.00 enu­ation Basin Bas Level 239.00 Volume 596 m² TOP OF BOT­TOM OF BANK SUDS Basin Out­let Head­wall 239.000 IL CL 240,500 Flow Croatiel De Spill­way Level 240.30 AREA GOBEN­I­EROUS Park­ing Park­ing ASS FIELD Bull Pen Build­ing Area 251m³ 241.67 1675 Park­ing Park­ing Exist­ing Dry Ditch SW-S3 CL241.526 $1.001 128 SW1 1:34 Area 660m Store and Work­shop Equip­ment, Tract­or 1:58.5 225m SW2.000 SW-S2 CL241.391 Straw & Hay Shed Area 375m 1239.00 IL Cattle Build­ing Area 734m² 1 in 37 Chan­nel Catch­pit details refer to draw­ing 50499 – 403 Access Track High Point. Chain­age 207.847. Pro­posed Access Track Iraw­ing 50499 – 501 Klargester Alpha Sep­tic Tank, 3800L Capa­city Open Grill Silt Trap naber Note: for reed bed siz­ing refer to draw­ing ⁵⁰⁴⁹⁹⁄₄₀₅ Klargester Class 1 Bypass Oil-Water 40 (Inlet) Capa­city: 1000 litres Length: 1123mm Dia­met­er: 1225mm C.L 241.50 LL 241.00 (Inlet) L.L 240.90 (Out­let) L at Inlet 240.85 I.L at Out­let 240.35 CF3 240 230.60 Mound Fil­ter POST & WIRE FENCE Dis­tri­bu­tion Lay­er (for mound fil­ter sys­tem siz­ing refer to draw­ing ⁵⁰⁴⁹⁹⁄₄₀₄) BOT­TOM OF BANG ‑Mound Bas­al ‑233 tors 242.0 GRASS Fil­ter mater­i­al depth between e top of the exist­ing ground and the bot­tom of the dis­tri­bu­tion lay­er should be at east 300mm TOP OF BANK FIELD DRAIN­AGE DITCH TOP OF BANK POST & WIRE FENCE GRASS GRAVEL TRACK RAILS GRASS POST & WIRE FENCE CON­CRETE Out­fall to exist­ing field POST POST & GRASS FIELD Out­fall to exist­ing field drain GRAVEL TRACK POST & WRE PENCE Out­fall to exist­ing field drain Level 235.08 Ditch TOP OF DITCH Exist­ing Ditch GRASS GRASS POST TOM OF BANK TOP OF DENSE POST BOT GRAVEL TRACK BOT­TOM OF BA Table 2. SUDs Main­ten­ance Plan POST Com­pon­ent Π Main­ten­ance Sched­ule Inlet and Out­let Struc­tures Remov­al of silt and the clear­ance of grills, grat­ings of foliage, veget­a­tion, debris and the like and dis­pose of off site. GRASS GRASS POST & WIRE FENCE Fre­quency Sug­ges­ted Per­sonel Every 12 months Farm Oper­at­ives SUDs Basin Con­trol Structures/​Inspection Cham­bers Every 12 Farm Oper­at­ives 2. Remov­al of silt and debris and dis­pose of off site. months Drain­age Impact Assess­ment Notes:

1. The sur­face water drain­age sys­tem to be dis­charge to the exist­ing ditch to the south of the site. The net­work has been designed to accom­mod­ate no flood­ing up to and includ­ing the 200year event + 30% Cli­mate Change. Mound Fil­ter Updated, Foul Water Sew­er Updated and Feed Drain­age Lit­ter Remov­al Sur­face Water Drain­age Para­met­ers: Table 1. SUDs Pol­lu­tion Haz­ard and Mit­ig­a­tion Indices Every 12 Type of Total Total hard­stand­ing area: Treat­ment Haz­ard & Mit­ig­a­tion Hydro- Routine col­lec­tion and remov­al of lit­ter from the basin and inlet and out­let. Farm Oper­at­ives months
2. In accord­ance with the SUDs manu­al C753, the simple index approach has been util­ised to ascer­tain the total poten­tial pol­lu­tion haz­ard. 23.01 For cli­ent is Descrip­tion Con­tri­bu­tion Sus­pen­ded Metals Roof­ing = 2,954 m² Com­pon­ent Index car­bons Grass Cut­ting As noted Area Solids Farm Oper­at­ives The grassed basin is to be cut in April and Septem­ber. Yard areas 5,933 m² Haz­ard 0.5 0.4 0.4 Out­let Head­wall Structures
3. Treat­ment has been provided as per the mit­ig­a­tion indices from Table 26.3 of the SUDs manu­al C753. The mit­ig­a­tion provided equals or exceeds the poten­tial pol­lu­tion index (See Table 1). Iron­side Far­rar Total = 8,887 m² Roads (low Fil­ter Strip Mit­ig­a­tion Index 1 0.4 0.4 0.5 Manu­ally remove silt, foliage, con­struc­tion debris, rub­bish and the like Every 12 Green­field run-off (Qbar) = 5.38 I/’s Traffic Roads) Fil­ter Drain Mit­ig­a­tion Index 2 (Note 0.4 0.4 0.5 Farm Oper­at­ives and dis­pose off site in a con­trolled manner.
4. Mit­ig­a­tion treat­ment is provided through fil­ter Strips, fil­ter drains and a basin for the yard area and roof. Envir­on­ment­al Con­sult­ants 111 McDon­ald Road, EDIN­BURGH, EH7 4NW 0131 550 6500 | mail@ironsidefarrar. months 6. Atten­u­ation required = 580 m³ Total Mit­ig­a­tion Provided (Note 3) 0.6 0.6 0.75 Atten­u­ation provided: Mit­ig­a­tion treat­ment is provided through fil­ter strip and fil­ter drain for the access track. EDIN­BURGH BELL­SHILL MANCHESTER Pro­ject Name Indus­tri­al Haz­ard 0.3 0.2 0.05 Basin = 611m³ Roof­ing: Inert Basin Mit­ig­a­tion Index 1 0.5 0.5 0.6 Inspec­tion Cham­bers Total = 611 m³ > 580 m³ Mater­i­al Total Mit­ig­a­tion Provided (Note 3) Manu­ally remove silt, foliage, con­struc­tion debris, rub­bish and the like 0.5 0.5 0.6 Every 12 Haz­ard 0.8 0.8 0.9 Fil­ter Strip Mit­ig­a­tion Index 1 0.4 0.4 0.5 Oth­er Indus­tri­al Fil­ter Drain and dis­pose off site in a con­trolled man­ner. Main­tain clear of ground cov­er and scrub veget­a­tion at least 1m off­set around the cham­bers to ensure that they are read­ily iden­ti­fi­able and access­ible. Farm Oper­at­ives months Foul Water Drain­age Para­met­ers: Fil­ter Drain Mit­ig­a­tion Index 2 (Note 0.4 0.4 0.5 Site Area Basin Mit­ig­a­tion Index 3 (Note 0.5 0.5 0.6 Fil­ter Drain Veget­a­tion Clear­ance Mound Fil­ter Dis­tri­bu­tion Lay­er Area: 63.00m² Total Mit­ig­a­tion Provided (Note 3) 0.85 0.85 >0.95 Main­tain clear of ground cov­er and scrub veget­a­tion at least 1m Every 12 Farm Oper­at­ives (A max­im­um pop­u­la­tion equi­val­ent of 6 people) 1. Dis­tri­bu­tion Lay­er: 6.0m wide and 10.5m long with 5 per­for­ated pipes Sep­tic Tank Siz­ing 2000 L + (180 x pe) + 2000 + (180 x 6) = 3080 litre There­fore choose 3800 Litre Klargester Alpha Sep­tic Tank or sim­il­ar approved. Pol­lu­tion Haz­ard and Mit­ig­a­tion Indexes Notes: Table 1 shows the total mit­ig­a­tion provided is great­er than the Hazard
5. In accord­ance with the SUDS Manu­al C753 the entire run­off area has been assessed, the SUDS Manu­al states that where land use var­ies across the run­off area, the highest pol­lu­tion haz­ard with­in the area shall be used. In this instance the highest pol­lu­tion haz­ard is taken as ​“Oth­er Indus­tri­al Site Area”
6. A factor of 0.5 is used to account for the reduced per­form­ance of sec­ond­ary or ter­tiary com­pon­ents asso­ci­ated with already reduced inflow con­cen­tra­tions. off­set at either side of the drain to provide a main­ten­ance cor­ridor, and mit­ig­ate root­lets pen­et­rat­ing the filer drain geo-tex­tile. Lit­ter Remov­al months As noted Farm Oper­at­ives Routine col­lec­tion and remov­al of lit­ter from the fil­ter strip sur­face. Inspec­tion Sur­face Inspect fil­ter strip sur­face to identi­fy evid­ence of erosion, poor Fil­ter Strip veget­a­tion growth, com­pac­tion, pond­ing, sed­i­ment­a­tion and con­tam­in­a­tion. Inspect silt accu­mu­la­tion rates and stab­lish appro­pri­ate remov­al frequencies
7. Atten­u­ation provided to con­trol the dis­charge from the devel­op­ment to Green­field Run­off (QBar) of 5.38 l/​s.
8. A HR Walling­ford Stor­age estim­a­tion assess­ment of the poten­tial atten­u­ation volume required has been car­ried out using IH124 Meth­od and the volume required assessed as 580 m³.
9. A review of the Water Envir­on­ment (Con­trolled Activ­it­ies) (Scot­land) Reg­u­la­tions 2011 demon­strates that this devel­op­ment shall not require SEPA licence to dis­charge, as the sur­face water is installed and main­tained in accord­ance with GBR 18, 19, 20 and 21 of the CAR Regulations.
10. There are no Scot­tish Water foul, sur­face water or com­bined sew­ers in the vicin­ity of the proposal.
11. Office facil­ity WC and asso­ci­ated facil­it­ies foul drain­age to be dis­charged to sep­tic tank with out­fall to drain­age field sized in accord­ance with BS 6297:2007. Cli­ent Pro­posed Drain­age Plan & SUDS PPP Con­di­tion 2‑M and 2‑N Farm Relo­ca­tion Bal­avil Bal­avil Estate Date 23.01.20 A1 Scale 1:500 Scale Qual­ity Assur­ance Every 12 months Farm Operatives
12. Build­ing roof area water to be col­lec­ted and dis­charged dir­ectly to the SUDs basin LGB Checked by HR SGS UKAS Cer­ti­fic­ate GB02/54539 Copy­right Acknow­ledge­ment Copy­right 2019 No. AL100017966 Grass Cut­ting As noted Farm Oper­at­ives Cut grass, man­age oth­er veget­a­tion and remove nuis­ance plants and atten­u­ation provided with­in the basin to Green­field Run Off equivalent.
13. Farm yard area sur­face water to be col­lec­ted in fil­ter strips/​filter drains and dis­charged to the SUDs basin and with atten­u­ation provided with­in the basin to Green­field Run Off equi­val­ent. FOR APPROV­AL 50499 – 401 P03 Note: Please do not scale from this draw­ing S2 241.391 1.375 E. 278243.378 N. 802041.448 S3 241.526 2 1.786 E. 278234.949 Ν. 802055.176 240.000 235.000 DATUM 232.000 PRO­POSED GROUND LEVEL STORM­WA­TER COV­ER LEVEL STORM­WA­TER INVERT 241.675 241.675 240.075 Pipe 1.000 Dia 225 STORM­WA­TER DETAILS Cir­cu­lar CLAY 19.072 STORM­WA­TER LENGTHS 241.587 S 35 239.515 241.526 241.500 239.365 MAN­HOLE SCHED­ULE Sheet 1 of 1 241.239 241.172 241.172 241.142 239.150 240.500 240.500 S4 239.150 239.000 24 1.085 Pipe 1.001 Pipe 1.002 Dia 375 Dia 375 Cir­cu­lar CONC 1 in 45 1 in 288 61.923 6.141 239.000 239.000 240.500 S5 239.000 239.039 Basin Pipe 1.003 Dia 375 1 in 11 14.385 237.615 239.000 Out­fall 240.000 DATUM 236.000 PRO­POSED GROUND LEVEL STORM­WA­TER COV­ER LEVEL STORM­WA­TER INVERT 241.391 241.391 239.791 Pipe 2.000 Dia 225 STORM­WA­TER DETAILS Cir­cu­lar CLAY 16.109 STORM­WA­TER LENGTHS 241.483 239.515 241.526 Man­hole Num­ber Cov­er Level Pipe Man­hole Size Types STORM Net­work 1 Pipe Dia­met­er Gradi­ent Pipe Upstream Man­hole Down­stream Man­hole Coordin­ates Depth To Sof­fit Con­nec­tions Code Inverts Diams Inv-soff Man­hole Cov­er Code (mm) (1:) Length Num­ber Invert Cov­er Num­ber Invert Cov­er 1.000 225 34 19.072 S1 240.08 241.68 S3 239.52 241.53 1.001 375 288 61.923 S3 239.37 241.53 S4 239.15 240.50 S1 241.675 1.375 E. 278225.001 N. 802071.448 1.002 375 156 23.418 S4 239.15 240.50 S5 239.00 240.50 1.003 375 11 15.070 S5 239.00 240.50 S 237.61 239.00 1200 B Unspec 2.000 225 58 16.109 S2 239.79 241.39 S3 239.52 241.53 0 1.000 240.075 225 0 2.000 239.791 225 1 2.000 239.515 225 2 1.000 239.515 225 0 1.001 239.365 375 1 1.001 239.150 375 S4 1 240.500 0.975 E. 278181.595 N. 802023.747 0 1.002 239.150 375 1 1.002 239.000 375 S5 240.500 1.125 E. 278176.124 N. 802000.977 0 1.003 239.000 375 1200 B Unspec 1350 B Unspec 1350 B Unspec Con­trol 1350 Cham­ber Unspec For cli­ent issue Descrip­tion Iron­side Far­rar Pro­ject Envir­on­ment­al Con­sult­ants 111 McDon­ald Road, EDIN­BURGH, EH7 4NW 0131 550 6500 | mail@ironsidefarrar. EDIN­BURGH BELL­SHILL MANCHESTER Farm Relo­ca­tion Bal­avil Cli­ent Bal­avil Estate Pro­posed Drain­age Lon­git­ud­in­al Sec­tions PPP Con­di­tion 2‑M and 2‑N Scale 1:500 Scale 23.01.20 A1 Checked by LG HR Qual­ity Assur­ance SGS UKAS Cer­ti­fic­ate GB02/54530 Copy­right Acknow­ledge­ment Sur­vey Crown Copy­right 2019 No. AL100017966 FOR APPROV­AL 50499 – 402 P01 Note: Please do not scale from this draw­ing 75mm BLIND­ING CON­CRETE 500mm MIN 700mm MAX JO FIRST STEP IRON JOINTS/LIFTING EYES SEALED WITH APPROVED BITU­MIN­OUS MATER­I­AL DUCTILE IRON MAN­HOLE COV­ER AND FRAME TYPE D400. MOR­TAR BED­DING AND HAUNCH­ING TO COV­ER AND FRAME TO CLAUSE 4.6.7 675mm min IN ACCORD­ANCE WITH SCOT­TISH WATER POLICY 1 TO 3 COURSES OF 215mm THICK CLASS B ENGIN­EER­ING BRICK TYPE 1 OR TYPE 2 CON­CRETE COV­ER SLAB BED­DED ON MOR­TAR. SHAFT DIA­MET­ER AS NOTED IN MAN­HOLE SCHED­ULE AND IN ACCORD­ANCE WITH SCOT­TISH WATER POLICY TOP AND BOT­TOM RINGS TO BE PLAIN ENDED. GRAN­O­LITH­IC CON­CRETE TOP­PING TO BE BROUGHT UP TO A DENSE SMOOTH FACE NEATLY SHAPED AND FIN­ISHED TO ALL BRANCH CON­NEC­TIONS (MIN THICK­NESS 50mm) 300mm ‑MAN­HOLE RUNGS PRECAST CON­CRETE MAN­HOLE SEC­TIONS AND COV­ER SLAB TO BE BED­DED WITH MOR­TAR, PLASTO­MER­IC OR ELAST­O­MER­IC SEAL CON­FIRM­ING TO BS EN 1917 AND BS 5911 – 3 100 min CON­STRUC­TION JOINT SELF-CLEAN­ING TOE HOLES O BE PROVIDED WHERE CHAN­NEL EXCEEDS 600mm WIDE INVERTS TO BE FORMED USING CHAN­NEL PIPES IIN­TEG­RAL IN-SITU ST4 CON­CRETE BASE WALLS BENCH­ING & BASE SLAB WITH PRECAST CHAN­NEL AS SHOWN OR IN-SITU FORMED INVERT AS ALTERN­AT­IVE. WALLS TO EXTEND 50 BEY­OND OUT­ER FACES OF CHAM­BER RING. ALTERN­AT­IV­LEY PRECAST CON­CRETE CHAM­BER RINGS MAY BE BED­DED IN MOR­TAR ON AN IN-SITU ST4 CON­CRETE BASE SLAB 300 GREAT­ER IN DIA­MET­ER THAN INTERN­AL DIA­MET­ER OF CHAM­BER RINGS. ALL CON­CRETE MUST USE SULPH­ATE RES­IST­ANT CEMENT. DETAIL 1 BAR­REL OF PIPE, 200mm TO PC CON­CRETE MAN­HOLE TYPE B DEPTH UP TO 3.0m (1:20) ‑THE BOT­TOM PRECAST MAN­HOLE RING TO BE BUILT INTO BASE CON­CRETE MIN­IM­UM 75mm 150 x 150 mm GRADE ST4 VOR­TEX FLOW CON­TROL AS PER MICRODRAIN­AGE CAL­CU­LA­TIONS TO BE INSTALLED AT OUT­LET PIPE. 1002 3750 mm DIA PIPE INLET PIPE 3750 mm DIA PIPE OUT­LET PIPE 1.003 DETAIL 2 CON­TROL MAN­HOLE 2400mm INTERN­AL DIA. 675mm x 675mm SQUARE ACCESS POINTS (STEP IRONS OMIT­TED FOR CLAR­ITY) WITH CLASS D400 COV­ERS CON­TROL CHAM­BER MHS6 — PLAN (1:50) CENT­RAL WEIR 200mm THICK TO BE KEYED INTO P.C.C. UNITS. 10mm DOW­ELS AT 300mm CENTRES TO BE PROVIDED TO TIE INTO REIN­FOR­CING MESH IN WEIR WALL & KEYED INTO THE BASE WITH 10mm DOW­ELS AT 300mm CENTRES BENCH­ING SLOPE ΤΟ ΒΕ 1:10 ΤΟ 1:30 75mm BLIND­ING CON­CRETE 3750 mm OUT­LET PIPE 239.000mg 250mm THICK COM­PACTED GRAN­U­LAR MATER­I­AL. 240.500m DOUBLE ENCAP­SU­LATED STEP RUNG 239.953 PEN­STOCK VALVE/DRAIN DOWN 239.00m0 500mm 3750 mm Base Level INLET PIPE 150mm MIN. MASS CON­CRETE SUR­ROUND TO PIPE­WORK. GRADE ST4 CON­CRETE 75mm THICK. QUAL­ITY CON­TROL THROTTLE, HYDRO­BRAKE FLOW CON­TROL DEVICE. 5.381/s DIS­CHARGE, 1.2m HEAD CON­TROL MAN­HOLE MHS6 SEC­TION (1:50) Notes:
14. Refer to ​“Sew­ers for Scot­land, 4^th Edi­tion” for typ­ic­al details of man­holes with depths from cov­er level to sof­fit of pipe not exceed­ing 6m. No sig­ni­fic­ant depar­ture from these shall be made without the approv­al of High­land Coun­cil. Types D&F need the agree­ment of Scot­tish Water. Man­holes should be designed and con­struc­ted in accord­ance with BS EN 752 – 3.
15. Man­hole dia­met­er to be as fol­lows: 1200mmØ (Pipe Ø up to 375mm.) 1500mmØ (Pipe Ø > 375mm up to 700mm.) 1800mmØ (Pipe Ø > 750mm up to 900mm.)
16. Man­hole con­struc­tion to be in accord­ance with ​“Sew­ers for Scot­land, Fourth Edi­tion”, (SFS4).
17. Man­hole cov­ers and frames to be in accord­ance with SFS4 sub-sec­tion 5.2.30.
18. Rock­er pipes shall be provided at entry to and exits from man­holes. Their length shall be as shown in the Table in sub-sec­tion 5.6.6 of SFS4.
19. Where step rungs and lad­ders are to be used top-step rungs are to be loc­ated not less than 500mm and not great­er than 700mm from the fin­ished man­hole cov­er level with a min­im­um of two courses of brickwork.
20. Cham­bers more than 450mm in depth have to have one or more step rungs or toe holes and 25mm dia­met­er sol­id bar hand­rail to be provided to the benching.
21. Where no step rungs are to be used, there shall be between two and four courses of brick­work under cover.
22. Refer to SFS4 sub-sec­tion 2.20.7 for min­im­um clear access open­ing sizes and require­ments for fittings.
23. Pipes of dif­fer­ent dia­met­ers enter­ing man­holes shall be installed with sof­fits at the same level.
24. Clause num­bers to the Spe­cific­a­tion for High­way Works (S.H.W.)
25. Pipe mater­i­als shall be in accord­ance with part 4 Sew­ers for Scot­land 4^th Edition.
26. The use of per­fect man­hole or sim­il­ar precast base units shall be pre­cluded without the express con­sent of the engin­eer. OUT­LET 200mm 500mm MIN 700mm MAX TO FIRST STEP IRON 300mm DUCTILE IRON MAN­HOLE COV­ER AND FRAME TYPE D400. 675mm DES­IG­NA­TION (1) MOR­TAR BED TO GRAT­ING & FRAME (10 MIN 20 MAX) TO ‑SHW SERIES 2400 BRICK­WORK TO SHW SERIES 2400 OR PRECAST CON­CRETE ADJUST­ING UNIT TO BS EN 1917 AND BS 5911 – 3 150mm THICK SPE­CIAL SEAT­ING SLAB TO BE USED WITH TYPE1 & TYPE 2 COV­ER SLABS. MAN­HOLE RUNGS DIA­MET­ER AS NOTED IN MAN­HOLE SCHED­ULE CAPPED PIPE END TOP AND BOT­TOM RINGS TO BE PLAIN ENDED. PRECAST COV­ER SLAB BED­DED ON 10 MIN BED DES­IG­NA­TION (i) TO SHW SERIES 2400 INLET PRECAST CON­CRETE CHAM­BER RINGS. CAPPED PIPE END 50mm 300mm 150mp DETAIL 3 FIL­TER TRENCH CATCH­PIT DETAIL SCALE (1:20) INLET ‑JOINTS SEALED WITH APPROVED TROW­EL­LING GRADE BITU­MIN­OUS MATER­I­AL OR PRE­FORMED JOINT­ING STRIP AS PER MAN­U­FAC­TUR­ERS INSTRUC­TIONS. 150 x 150 mm GRADE ST4 PRECAST CON­CRETE RINGS BED­DED ON CEMENT MOR­TAR. IN-SITU ST4 CON­CRETE BASE SLAB DEPTH VAR­IES 600mm 150mm TOP­SOIL ‑FIN­ISH BACK­FILL TO TRENCH IN ACCORD­ANCE WITH S.H.W. CLAUSE 505.2 DETAIL 4 FIL­TER DRAIN SCALE (1:20) TYPE B MATER­I­AL TO S.H.W CLAUSE 503.3 (ii) TER­RAM 700 MEM­BRANE 150mm POR­OUS PIPE PER­FOR­A­TIONS LAID UP TYPE A MATER­I­AL TO S.H.W CLAUSE 503.3 (1) DEPTH VAR­IES 600mm 150mm TOP­SOIL FIN­ISH BACK­FILL TO TRENCH IN ACCORD­ANCE WITH S.H.W. CLAUSE 505.2 TYPE B MATER­I­AL TO S.H.W CLAUSE 503.3 (ii) TER­RAM 700 MEM­BRANE DETAIL 5 EMBANK­MENT FIL­TER TRENCH SCALE (1:20) TYPE A MATER­I­AL TO S.H.W CLAUSE 503.3 (i) 2 No. 50mmØ Per­for­ated Pipes with fil­ter mater­i­al sur­round (single sized gran­u­lar mater­i­al, 14mm no Lime­stone) 600mm DETAIL 6 MAIN ​“LOW FLOW” CHAN­NEL SCALE 1:10 For cli­ent issue Descrip­tion Iron­side Far­rar Pro­ject Envir­on­ment­al Con­sult­ants 111 McDon­ald Road, EDIN­BURGH, EH7 4NW 0131 550 6500 | mail@ironsidefarrar. EDIN­BURGH BELL­SHILL MANCHESTER Farm Relo­ca­tion Bal­avil Cli­ent Bal­avil Estate Pro­posed Drain­age Drain­age Details PPP Con­di­tion 2‑M and 2‑N Scale 1:500 Scale Date 23.01.20 A1 LG Checked by HR Qual­ity Assur­ance SGS UKAS Cer­ti­fic­ate GB02/54539 Copy­right Acknow­ledge­ment FOR APPROV­AL 50499 – 403 Crown Copy­right 2019 No. AL100017966 P01 Note: Please do not scale from this draw­ing Mound Fil­ter Sys­tem Cal­cu­la­tions to BRE Digest No. 478, Mound Fil­ter Sys­tems for the Treat­ment of Domest­ic Wastewa­ter Vp from per­col­a­tions text res­ults = 186.9 Min­im­um Bas­al Area Res­ult­ant Mound Dimen­sion The res­ult­ant dimen­sion meet the crit­ic­al dimen­sion for dis­tri­bu­tion lay­ers bed as per BRE 478 — Fig 14 and Fig­ure. At = P x Vp x 0.25 A = Dis­tri­bu­tion lay­er width B = P = Dis­tri­bu­tion lay­er length 6.00 m C = Downslope taper 10.50 m Vp = At = Per­col­a­tion value of the nat­ive soil (s/​mm) 6 D = Area 186.9 E = Depth of fil­ter mater­i­al at the upslope edge 9.61 m 280.3 m² F = Min­im­um Dis­tri­bu­tion Lay­er Area G = Depth of gravel in the dis­tri­bu­tion lay­er Depth of fil­ter mater­i­al at the downslope edge 0.33 m 1.14 m H = Depth of the cov­er at the upslope and downslope 0.20 m Ad = P x Vf x 0.25 J = Upslope taper Depth of cov­er at the centre of the dis­tri­bu­tion lay­er 0.30 m 1.40 m P = K = Pop­u­la­tion Equi­val­ent Sideslope taper 1.50 m Vf = Ad = Dis­tri­bu­tion lay­er area (m²) Per­col­a­tion value of fil­ter mater­i­al (s/​mm) 6 L = 35 W = Total length of mound [B+2K] 5.75 m 52.5 m² X = Total Width of the Mound [A+C+J] 21.90 m Length of Pipe­work with­in Dis­tri­bu­tion Lay­er Total height of mound H+J+[(D+E)/2] 17.11 m 2.34 m Ad = Ad = Pipes = Adopt 5 pipes Length = Length of each pipe Dis­tri­bu­tion Lay­er Area At = 52.5 Mound Bas­al Area (L X w) 63.0 m² X = Height 371.5 m² 5 2.3 m² 241.00 10.5 m Assum­ing 6.0m dis­tri­bu­tion lay­er width. There­fore Width between pipes 1.2 m There­fore dis­tri­bu­tion lay­er area = 10.5 m x 6.0m = 63.00 m² 240.50 240.00 + 239.50 ‑K-5.7m- 239.00 238.50 238.00 Back­fill with selec­ted excav­ated mater­i­al free from large objects 100mmØ Per­for­ated pipe Per­meable Geo­tex­tile H= 1.4m G= 0.65m D= 0.33m 240.000 A= 6m F=0.2m 1.2m E=1.14m J= 1.5m DATUM 235.000 Exist­ing Ground Level Pro­posed Level Dis­tri­bu­tion Lay­er Vf = 35s/​mm Per­col­a­tion Rate 4.000 6.000 8.000 C= 9.61m W= 17.11m Mound Fil­ter Cross Sec­tion A‑A’ Scale H 1:50 V 1:50 239.178 237.680 12.000 Pro­posed Fin­ish Level 238.398 237.410 14.000 Usable Fill 5 – 30 min / 25mm Per­col­a­tion Rate 3 1 237.622 237.131 16.000 236.845 236.787 18.000 236.741 236.741 18.269 237.50 237.00 KEY ‑240.0 1 in 3 3 2397 CL 240.50 L 239.50 ‑K-5.7m- + ‑239.0- Dis­tri­bu­tion Lay­er ‑237.0 238.58 Mound Bas­al Mound Fil­ter Sys­tem Plan Scale 1:100 For cli­ent issue Descrip­tion Iron­side Far­rar Envir­on­ment­al Con­sult­ants 111 McDon­ald Road, EDIN­BURGH, EH7 4NW 0131 550 6500 | mail@ironsidefarrar. EDIN­BURGH BELL­SHILL MANCHESTER Pro­ject Name Farm Relo­ca­tion Bal­avil Cli­ent Bal­avil Estate Title Pro­posed Mound Fil­ter Sys­tem Notes Pro­posed Fil­ter Strip
27. The area required for the mound shall be fenced to avoid traffic and con­struc­tions. This will pre­vent dis­turb­ance, scalping or Pro­posed Fil­ter Drain com­pac­tion of the mound.
28. The sep­tic and infilt­ra­tion sys­tem shall be inspec­ted annu­ally. Pro­posed Reed Bed Sys­tem Date PPP Con­di­tion 2‑M and 2‑N Scale 1:500 Scale 07.05.20 A1 LG Checked by HR Qual­ity Assur­ance SGS UKAS Cer­ti­fic­ate GB02/54530 Copy­right Acknow­ledge­ment FOR APPROV­AL 50499 – 404 Crown Copy­right 2019 No. AL100017966 P02 ‑238.0- 237.44 Note: Please do not scale from this draw­ing Wash Bay Reed Bed Siz­ing Cal­cu­la­tions Siz­ing based on the Recom­mend­a­tions from BRE Pub­lic­a­tion ​‘Reed Beds for the Treat­ment of Domest­ic Wastewa­ter’ Recom­men­ded size of reed bed = 5m²/​PE Cal­cu­la­tion of Flow Pres­sure wash­er with a flow rate of 10 litres per minute. Assume 5 minutes per wash There­fore flow = 10 x 5 = 50 litres per wash Hose with a flow rate of 20 litre per minute Assume 5 minutes per wash There­fore flow = 20 x 5 = 100 litre per wash There­fore size for hose wash Assume 3 Wash per day There­fore flow per day = 3 x 100 = 300 litre per day Cal­cu­la­tion of Pop­u­la­tion Equi­val­ent Flow for one per­son = 180 litre per day There­fore PE equi­val­ent = ³⁰⁰⁄₁₈₀ = 1.7 = 2 Per­sons Siz­ing of Reed Bed Recom­mend­a­tion Size = 5m² / PE There­fore min­im­um reed bed area = 5 x 2 = 10m² Recom­men­ded length to width ratio for a reed bed 4:1 for PE ≤ 30