The URL can be used to link to this page

Home My WebLink AboutSD-474-124" OBSERVATION PORT WIN CAP (PERFORATED BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) FROM AREA DRAIN 5" SCH 40 PVC ROOF DRAIN LEADER 6" SCH 40 - PVC LATERAL (TYP.) FROM ROOF DRAIN 4 OZ NON - WOVEN FILTER /FABRIC TO ENCLOSE TOP AND SIDES OF THE SYSTEI 0 ^(rQla —AJ - (NOT TO SCALE) IN CULTEC RECHARGER 150XLHD (33 "Wx 10: 25'L x l S 5 °H) 1" TO 2" DIA. WASHED CRUSHED. STONE (DOUBLE WASHED PREFERRED) FOUNDATION 1" TO 2" DIA. DOUBLE WASHED CRUSHED STONE OBSERVATION PORT WITH CAP (PERFORATED BELOW STONE — INSTALL A MINIMUM OF TWO DER (2) PORTS IN EACH FIELD) .—SURCHARGE PIPE 4" LOAM & SEED MIN. FINISHED 4 OZ NON —WOVEN FILER FABRIC TO ENCLOSE CHAMBERS EL OVER CHAMBERS= X959 COMPACTED FILL TOP AND SIDES OF THE SYSTEM NOES: - C C IS CENTER TO CENTER - PROVIDE 6" M1N SEPARATON BETWEEN ROWS OF CHAMBERS PROPOSED SUBSURFACE INRL A77ON S)97rM --A (PSIS: - CROSS SEC7701V (NOT TO SCALE) NOTE.• CONTRACTOR SHALL REMOVE ALL TOPSOIL, SUBSOIL, FILL MATERIAL AND OTHER IMPERVIOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFILTRATION SYSTEM: EXCAVATION SHALL BE FILLED WITH MATERIAL SPECIFIED IN SECTION 75.255 (3) OF THE STATE ENVIRONMENTAL CODE, T17LE 5 UP TO THE PROPOSED ELEVATION OF THE WASHED STONE. DRAINAGE NOTES: 1 THE PROPOSED STORM DRAINAGE DESIGN FOR THIS SUBDIVISION INCLUDES SUBSURFACE INFILTRATTON SYSTEM DESIGNS FOR LOTS A, C, D, E AND F TO CAPTURE A PROPOSED ROOF RUNOFF UP TO 3,000 SF OF ROOF AREA AND UP TO AN ADDITIONAL 200 SF OF MISCELLANEOUS IMPERVIOUS AREAS (PA.ROS, WALKS, ETC.) FROM THE REAR OF LOTS A, C, D, E AND F. IF ANY OF THE PROPOSED DWELLINGS FOR LOTS A, G E, AND F EXCEED 3,000 SF OF ROOF AREA THE PROPOSED SUBSURFACE INFILTRATION SYSTEM DESIGN SHALL BE REVISED BY THE DESIGN ENGINEER PRIOR TO THE SUBMITTAL OF THE BUILDING PERMIT APPLICA77ON FOR EACH INDIVIDUAL LOT 2. AN ADD177ONAL PROPOSED SUBSURFACE INFILTRATION SYSTEM HAS BEEN INCLUDED WITHIN THE SUBDIVISION STORMWAER DESIGN TO CAPTURE UP TO 925 SF OF MISCELLANEOUS IMPERIOUS (DRIVEWAY, WALKS, ETC.) FROM THE FRONT OF PROPOSED LOT A. IF THE PROPOSED IMPERVIOUS AREA IN THE FRONT OF LOT A EXCEEDS 925 SF, THE PROPOSED SUBSURFACE INFIL IRA TION SYSTEM DESIGN SHALL BE REVISED BY THE DESIGN ENGINEER PRIOR TO THE SUBMITTAL OF THE BUILDING PERMIT APPLICATION FOR LOT A. 4" 08SERVATION PORT WITH CAP (PERFORATED BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FELD) FROM AREA DRAIN 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE TOP AND SIDES OF THE SYSTEM CULTEC RECHARGER 330XLHD (52 "Wx8.5'Lx30.5•H) (- 1" TO 2" DIA. WASHED CRUSHED STONE (DOUBLE WASHED PREFERRED) 6" SCH 40 O PVC LATERAL (TYP.) T- ».- _. -. - „�..° 6" SCH 40 PVC ROOF 225 DRAIN LEADER FROM 24 5' ROOF DRAIN PROPOSED SUBSURFACE INFIL7RAT10N USE 9 CULTEC RECHARGER SYSTEM C D E. F 6PS/S G & E F) - PLAN VIEW 330XL HEAVY DUTY CHAMBERS (NOT TO SCALE) FOUNDATION 1" TO 2" DIA. DOUBLE WASHED CRUSHED STONE OBSERVATION PORT WITH CAP (PERFORATED f,i BE LOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) GE PIPE 4" LOAM & SEED /r4 OZ NON -WOVEN FILTER CHAMBERS EL. OVER CHAMBERS= +4.54 rr959 COMPACTED FILL 7 ASRIC TO ENCLOSE OF THE SYSTEM BLOCK TO PROPOSED 6" INLET SUBSURFACE INFILTRA7ON SYSTEM ' HOT. CHAMBER BOTTOM EL. USE 9 CULTEC RECHARGER 330XL HEAVY DUTY CHAMBERS PROVIDE MINIMUM 4 FEET SEPARA77ON BETWEEN 7HE BOTTOM OF THE 6 INCH WASHED STONE LAYER AND THE ES77MA7ED SEASONAL HIGH GROUNDW47ER TABLE OR LEDGE. V OCCURRING SOIL (DEPTH VARIES) SEC77ON DETAIL NO 7ES• - C -C IS CENTER TO CENTER - PROVIDE 6" MIN. SEPARATION BETWEEN ROWS OF CHAMBERS - PROVIDE 4' MIN. SEPARATION FROM BOTTOM OF STONE TO E. S.H. G. W. L (NOT TO SCALE) 6' S H 40 PVC FROM AREA DRAIN (SWE,_ CONTRACTOR SHALL REMOVE ALL TOPSOIL, SUBSOIL, FILL MATERIAL AND OTHER IMPERVIOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFIL IRA 77ON SYSTEM. EXCAVATION SHALL BE FILLED WITH MATERIAL SPECIFIED IN SECTION 15.255 (3) OF THE STATE ENVIRONMENTAL CODE, TITLE 5 UP TO THE PROPOSED ELEVATION OF THE WASHED STONE r— Magi y 4" OBSERVATION PORT WITH CAP (PERFORATED BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) FROM AREA DRAIN MIN. 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE TOP 0 21.25' 1" TO 2" DIA. WASHED - CRUSHED STONE (DOUBLE WASHED PREFERRED) - CULTEC RECHARGER 150XLHD (33 "WX I D. 25'L X I B. 5 "H) PROPOSED SUBSURFACE INALTRA770M USE 2 CULTEC RECHARGER SYSTEM -A2 (PSIS -A2,) - PLAN VIEW 150XL HEAVY DUTY CHAMBERS (NOT TO SCALE) 1" TO 2" DIA. DOUBLE WASHED OBSERVATION PORT WITH CAP (PERFORATED CRUSHED STONE BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) 4" LOAM & SEED 95% COMPACTED FILL 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE L. OVER CHAMBERS +354 SIDES OF THE SYSTEM 7777777 ,; 6„ USE 2 CULTEC RECHARGER 750XL HEAVY DUTY CHAMBERS PROVIDE MINIMUM 4 FEET SEPARATION BETWEEN THE BOTTOM OF THE 6 INCH WASHED STONE LAYER AND THE E577MA70 SEASONAL HIGH GROUNDWATER TABLE OR LEDGE w e,R OCCURRING SOIL (DEPTH VAR[ES)�� SEC77ON DETAIL 61 : ®? !sa 6" SC-- H 4- 0. PVC FROM -- --AREA DRAIN NOTE.• CONTRACTOR SHALL REMOVE ALL TOPSOIL, . SUBSOIL, FILL MATERIAL AND OTHER IMPERVOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFIL IRA TION SYSTEM. EXCAVATION SHALL BE FILLED WIN MATERIAL SPECIFIED IN SECTION 15.255 (3) OF THE STATE ENVIRONMENTAL CODE, TITLE 5 UP TO THE PROPOSED ELEVA7ON OF THE WASHED STONE. &am. FOR DETAILS NOT DEPICTED HEREON, REFER TO STANDARD DETAILS AS PROVIDED BY THE TOWN OF LEXINGTON ENGINEERING DEPARTMENT. WILLARD CIRCLE 'AP .ql - T.nTq .'QA a LOCK BLOCK �6" SCH 40 pVC TOP STONE EL. = +2.54 B.. (MIN) 39 C -C --- -. CHAMBER TOP - +2.04 TO PROPOSED 6" INLET +0.50 SUBSURFACE 1 INFILTRATION SYSTEM ROT CHAMBER +0.50 BOTTOM EL. 0-0 '.. , 1 11 L ' 6 USE 12 CULTEC RECHARGER 12" (MIN} _ 33' 6 " 33 ". 150XL HEAVY DUTY CHAMBERS '; (TYP} - E.SKG.W. NATURALLY PROVIDE MIN /MUM 4 FEET SEPARATON OCCURRING SOIL BETWEEN THE BOTTOM OF THE 6 INCH (DEPTH VARIES) WASHED STONE LAYER AND THE ES77MA -TED - -- - -- SEASONAL HIGH GROUNDW47ER TABLE OR LEDGE. SEC77ON DETAIL NOES: - C C IS CENTER TO CENTER - PROVIDE 6" M1N SEPARATON BETWEEN ROWS OF CHAMBERS PROPOSED SUBSURFACE INRL A77ON S)97rM --A (PSIS: - CROSS SEC7701V (NOT TO SCALE) NOTE.• CONTRACTOR SHALL REMOVE ALL TOPSOIL, SUBSOIL, FILL MATERIAL AND OTHER IMPERVIOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFILTRATION SYSTEM: EXCAVATION SHALL BE FILLED WITH MATERIAL SPECIFIED IN SECTION 75.255 (3) OF THE STATE ENVIRONMENTAL CODE, T17LE 5 UP TO THE PROPOSED ELEVATION OF THE WASHED STONE. DRAINAGE NOTES: 1 THE PROPOSED STORM DRAINAGE DESIGN FOR THIS SUBDIVISION INCLUDES SUBSURFACE INFILTRATTON SYSTEM DESIGNS FOR LOTS A, C, D, E AND F TO CAPTURE A PROPOSED ROOF RUNOFF UP TO 3,000 SF OF ROOF AREA AND UP TO AN ADDITIONAL 200 SF OF MISCELLANEOUS IMPERVIOUS AREAS (PA.ROS, WALKS, ETC.) FROM THE REAR OF LOTS A, C, D, E AND F. IF ANY OF THE PROPOSED DWELLINGS FOR LOTS A, G E, AND F EXCEED 3,000 SF OF ROOF AREA THE PROPOSED SUBSURFACE INFILTRATION SYSTEM DESIGN SHALL BE REVISED BY THE DESIGN ENGINEER PRIOR TO THE SUBMITTAL OF THE BUILDING PERMIT APPLICA77ON FOR EACH INDIVIDUAL LOT 2. AN ADD177ONAL PROPOSED SUBSURFACE INFILTRATION SYSTEM HAS BEEN INCLUDED WITHIN THE SUBDIVISION STORMWAER DESIGN TO CAPTURE UP TO 925 SF OF MISCELLANEOUS IMPERIOUS (DRIVEWAY, WALKS, ETC.) FROM THE FRONT OF PROPOSED LOT A. IF THE PROPOSED IMPERVIOUS AREA IN THE FRONT OF LOT A EXCEEDS 925 SF, THE PROPOSED SUBSURFACE INFIL IRA TION SYSTEM DESIGN SHALL BE REVISED BY THE DESIGN ENGINEER PRIOR TO THE SUBMITTAL OF THE BUILDING PERMIT APPLICATION FOR LOT A. 4" 08SERVATION PORT WITH CAP (PERFORATED BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FELD) FROM AREA DRAIN 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE TOP AND SIDES OF THE SYSTEM CULTEC RECHARGER 330XLHD (52 "Wx8.5'Lx30.5•H) (- 1" TO 2" DIA. WASHED CRUSHED STONE (DOUBLE WASHED PREFERRED) 6" SCH 40 O PVC LATERAL (TYP.) T- ».- _. -. - „�..° 6" SCH 40 PVC ROOF 225 DRAIN LEADER FROM 24 5' ROOF DRAIN PROPOSED SUBSURFACE INFIL7RAT10N USE 9 CULTEC RECHARGER SYSTEM C D E. F 6PS/S G & E F) - PLAN VIEW 330XL HEAVY DUTY CHAMBERS (NOT TO SCALE) FOUNDATION 1" TO 2" DIA. DOUBLE WASHED CRUSHED STONE OBSERVATION PORT WITH CAP (PERFORATED f,i BE LOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) GE PIPE 4" LOAM & SEED /r4 OZ NON -WOVEN FILTER CHAMBERS EL. OVER CHAMBERS= +4.54 rr959 COMPACTED FILL 7 ASRIC TO ENCLOSE OF THE SYSTEM BLOCK TO PROPOSED 6" INLET SUBSURFACE INFILTRA7ON SYSTEM ' HOT. CHAMBER BOTTOM EL. USE 9 CULTEC RECHARGER 330XL HEAVY DUTY CHAMBERS PROVIDE MINIMUM 4 FEET SEPARA77ON BETWEEN 7HE BOTTOM OF THE 6 INCH WASHED STONE LAYER AND THE ES77MA7ED SEASONAL HIGH GROUNDW47ER TABLE OR LEDGE. V OCCURRING SOIL (DEPTH VARIES) SEC77ON DETAIL NO 7ES• - C -C IS CENTER TO CENTER - PROVIDE 6" MIN. SEPARATION BETWEEN ROWS OF CHAMBERS - PROVIDE 4' MIN. SEPARATION FROM BOTTOM OF STONE TO E. S.H. G. W. L (NOT TO SCALE) 6' S H 40 PVC FROM AREA DRAIN (SWE,_ CONTRACTOR SHALL REMOVE ALL TOPSOIL, SUBSOIL, FILL MATERIAL AND OTHER IMPERVIOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFIL IRA 77ON SYSTEM. EXCAVATION SHALL BE FILLED WITH MATERIAL SPECIFIED IN SECTION 15.255 (3) OF THE STATE ENVIRONMENTAL CODE, TITLE 5 UP TO THE PROPOSED ELEVATION OF THE WASHED STONE r— Magi y 4" OBSERVATION PORT WITH CAP (PERFORATED BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) FROM AREA DRAIN MIN. 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE TOP 0 21.25' 1" TO 2" DIA. WASHED - CRUSHED STONE (DOUBLE WASHED PREFERRED) - CULTEC RECHARGER 150XLHD (33 "WX I D. 25'L X I B. 5 "H) PROPOSED SUBSURFACE INALTRA770M USE 2 CULTEC RECHARGER SYSTEM -A2 (PSIS -A2,) - PLAN VIEW 150XL HEAVY DUTY CHAMBERS (NOT TO SCALE) 1" TO 2" DIA. DOUBLE WASHED OBSERVATION PORT WITH CAP (PERFORATED CRUSHED STONE BELOW STONE - INSTALL A MINIMUM OF TWO (2) PORTS IN EACH FIELD) 4" LOAM & SEED 95% COMPACTED FILL 4 OZ NON -WOVEN FILTER FABRIC TO ENCLOSE L. OVER CHAMBERS +354 SIDES OF THE SYSTEM 7777777 ,; 6„ USE 2 CULTEC RECHARGER 750XL HEAVY DUTY CHAMBERS PROVIDE MINIMUM 4 FEET SEPARATION BETWEEN THE BOTTOM OF THE 6 INCH WASHED STONE LAYER AND THE E577MA70 SEASONAL HIGH GROUNDWATER TABLE OR LEDGE w e,R OCCURRING SOIL (DEPTH VAR[ES)�� SEC77ON DETAIL 61 : ®? !sa 6" SC-- H 4- 0. PVC FROM -- --AREA DRAIN NOTE.• CONTRACTOR SHALL REMOVE ALL TOPSOIL, . SUBSOIL, FILL MATERIAL AND OTHER IMPERVOUS LAYERS WITHIN THE FOOTPRINT (AND TWO (2) FEET BEYOND) OF THE PROPOSED SUBSURFACE INFIL IRA TION SYSTEM. EXCAVATION SHALL BE FILLED WIN MATERIAL SPECIFIED IN SECTION 15.255 (3) OF THE STATE ENVIRONMENTAL CODE, TITLE 5 UP TO THE PROPOSED ELEVA7ON OF THE WASHED STONE. &am. FOR DETAILS NOT DEPICTED HEREON, REFER TO STANDARD DETAILS AS PROVIDED BY THE TOWN OF LEXINGTON ENGINEERING DEPARTMENT. WILLARD CIRCLE 'AP .ql - T.nTq .'QA