TIM & CINDY CARLSON 293 LAMSON LANE NEW LONDON, NEW HAMPSHIRE MAY 2017 OWNER: TIM & CINDY CARLSON 6 IRONWOOD ROAD SANDY HOOK, CT (203)

Transcription

1 293 LAMSON LANE NEW LONDON, NEW HAMPSHIRE OWNER: 6 IRONWOOD ROAD SANDY HOOK, T (203) ENGINEER: 76 NEWPORT ROAD, PO BOX (603) SITE ARHITET: BONIN ARHITETS & ASSOIATES PLL 20 MAIN STREET, PO BOX (603) R:\ arlson Permitting\DWGS\Final\ arlson Final 06_22x34.dwg, over22x34, 5/9/207 3:00:59 PM, Hernick NEW LONDON NEW HAMPSHIRE SHEET LIST LOATION PLAN SALE: " = 2000' OVER EXISTING ONDITIONS PLAN SITE PLAN ENVIROFIN SYSTEM (SEPTI PLAN)

2 PLEASANT LAKE REFERENE SURFAE ELEVATION = (SEE NOTE 2) FEMA FLOOD ZONE A 00YEAR FLOOD ELEVATION = (SEE NOTE 4) Littleton NH New London NH Newport VT R:\ arlson Permitting\DWGS\Final\ arlson Final 06_22x34.dwg, Ex ond, 5/9/207 3:0:05 PM, Hernick GENERAL NOTES. SURVEYED PAREL IS LOATED IN ZONING DISTRIT R2 AS WELL AS THE SHORELAND OVERLAY DISTRIT. THE PROPERTY IS ON TAX MAP 62, LOT 8 IN NEW LONDON. 2. BASIS OF BEARINGS: THE BEARINGS SHOWN HEREON REFER TO MAGNETI NORTH, OBSERVED IN OTOBER OF 204. THE VERTIAL DATUM IS BASED ON A MEASUREMENT OF THE WATER LEVEL OF PLEASANT LAKE RELATIVE TO A BENH MARK OF ESTABLISHED ON A ONRETE ABUTMENT OF THE SPILLWAY OUTLET OF THE LAKE IN ELKINS. 3. THIS PLAN IS BASED ON A FIELD SURVEY ONDUTED ON OTOBER 2, 204, BY HORIZONS ENGINEERING, IN. USING ONVENTIONAL LEIA TOTAL STATION. 4. THE 00YEAR BASE FLOOD ELEVATION SHOWN IS FROM THE DUBOIS & KING IN. "PLEASANT LAKE DAM ALTERNATIVES SUMMARY REPORT", DATED JULY, 206. BASED ON THIS FLOOD ELEVATION, THE SUBSTAINAL IMPROVEMENTS TO THE SITE LIE OUTSIDE OF THE NEW LONDON FLOODPLAIN OVERLAY DISTRIT. 207 EXISTING ONDITIONS PLAN DATE REVISION DESRIPTION ENG DWG DATE: PROJET #: ENGIN'D BY: DRAWN BY: HEK'D BY: EJP ARHIVE #: H 0

3 LEGEND METAL STAKE FOUND BOLT IN BOULDER FOUND SEE STREAM OUTLET INSET (AT RIGHT) GRANITE MONUMENT FOUND UTILITY POLE EXISTING PROPERTY LINE EXISTING PROPERTY LINE EDGE OF GRAVEL ROAD STONE RETAINING WALL 0' ONTOUR INTERVAL STREAM OUTLET INSET 2' ONTOUR INTERVAL SALE: " = 0' TREE OUNT GRID BOUNDARY / LABEL FLOATING TURBIDITY BARRIER OHW TB ORDINARY HIGH WATER REFERENE LINE TB SPB50 TOP OF BANK 50' SHORELAND PROTETION BUFFER SPB50 SPB50 50' SHORELAND PROTETION BUFFER SPB250 SPB ' SHORELAND PROTETION BUFFER 60' SHORELAND PROTETION BUFFER TREE OUNT GRID BOUNDARY / LABEL EXISTING IMPERVIOUS OVER PROPOSED IMPERVIOUS OVER POSTONSTRUTION UNALTERED AREA RD RED OSIER DOGWOOD WH WITHHAZEL HB HIGH BUSH BLUEBERRY WITHIN 50' OF REFERENE LINE EXISTING PROPOSED 358 SF 263 SF 766 SF 464 SF HOUSE DEK Littleton NH New London NH NET AREA 95 SF 302 SF Newport VT GENERAL NOTES R:\ arlson Permitting\DWGS\Final\ arlson Final 06_22x34.dwg, Prop, 5/9/207 3:0:08 PM, Hernick. THE INTENT OF THIS PLAN IS TO DEPIT GRADING AND ONSTRUTION FOR NHDES SUBSURFAE AND NHDES SHORELAND PERMIT APPLIATIONS, LOAL REVIEWS, AND ONSTRUTION. 2. NOT DETERMINED DUE TO A RAKED ONRETE OVER ON FABRIATE THE PROPOSED MANHOLE. 3. SITE PLAN THE OWNER SHALL MAINTAIN A NATURAL VEGETATIVE BUFFER TO BE 20' WIDE ENTERED ON THE PROPOSED STREAM HANNEL ALIGNMENT. MAINTENANE AND SELETIVE UTTING MAY OUR WITHIN THE BUFFER. THE INTENT IS TO ALLOW NATURALLY OURRING VEGETATION TO GROW WITHIN THE BUFFER. 4. FLOW SHALL NOT BE ROUTED TO THE PROPOSED HANNEL UNTIL ONSTRUTION OF THE HANNEL IS OMPLETE AND THE HANNEL IS FULL STABILIZED. 5. STREAM DAYLIGHTING AND RESTORATION HAS BEEN APPROVED BY NHDES UNDER WETLAND PERMIT # ALL WORK SHALL BE OMPLETED IN OMPLIANE WITH THE ONDITIONS OF THE PERMIT. DATE REVISION DESRIPTION DATE: ENG DWG PROJET #: ENGIN'D BY: DRAWN BY: JH HEK'D BY: ARHIVE #: 207 H 20

4 FRAME AND OVER LOAM AREA PAVED AREA EROSION ONTROL GENERAL NOTES A. KEEP SITE MODIFIATION TO A MINIMUM. ONSIDER FITTING THE BUILDINGS AND STREETS TO THE NATURAL TOPOGRAPHY. THIS REDUES THE NEED FOR UTS AND FILLS. AVOID EXTENSIVE GRADING THAT WOULD ALTER DRAINAGE PATTERNS OR REATE VERY STEEP SLOPES. 2. EXPOSE AREAS OF BARE SOIL TO EROSIVE ELEMENTS FOR THE SHORTEST TIME POSSIBLE. 3. SAVE AND PROTET DESIRABLE EXISTING VEGETATION WHERE POSSIBLE. ERET BARRIERS TO PREVENT DAMAGE FROM ONSTRUTION EQUIPMENT. 4. LIMIT THE GRADES OF SLOPES SO VEGETATION AN BE EASILY ESTABLISHED AND MAINTAINED. 5. AVOID SUBSTANTIAL INREASE IN RUNOFF LEAVING THE SITE. B. MINIMIZE POLLUTION OF WATER DURING ONSTRUTION ATIVITIES. STOKPILE TOPSOIL REMOVED FROM ONSTRUTION AREA AND SPREAD OVER ANY DISTURBED AREAS PRIOR TO REVEGETATION. TOPSOIL STOKPILES MUST BE PROTETED FROM EROSION. 2. PROTET BARE SOIL AREAS EXPOSED BY GRADING ATIVITIES WITH TEMPORARY VEGETATION OR MULHES. 3. USE SEDIMENT BASINS TO TRAP DEBRIS AND SEDIMENT WHIH WILL PREVENT THESE MATERIALS FROM MOVING OFF SITE. 4. USE DIVERSIONS TO DIRET WATER AROUND THE ONSTRUTION AREA AND AWAY FROM EROSION PRONE AREAS TO POINTS OF SAFE DISPOSAL. 5. USE TEMPORARY ULVERTS OR BRIDGES WHEN ROSSING STREAMS WITH EQUIPMENT. 6. PLAE ONSTRUTION FAILITIES, MATERIALS, AND EQUIPMENT STORAGE AND MAINTENANE AREAS AWAY FROM DRAINAGE WAYS.. PROTET AREA AFTER ONSTRUTION.. ESTABLISH GRASS OR OTHER SUITABLE VEGETATION ON ALL DISTURBED AREAS. SELET SPEIES ADAPTED TO THE SITE ONDITIONS AND THE FUTURE USE OF THE AREA. FINAL GRADES SHALL BE SEEDED WITHIN 72 HOURS. STABILIZATION SHALL BE DEFINED AS 85% VEGETATIVE OVER. 2. MAINTAIN VEGETATED AREAS USING PROPER VEGETATIVE 'BEST MANAGEMENT PRATIES' DURING THE ONSTRUTION PERIOD. 3. MAINTAIN NEEDED STRUTURAL 'BEST MANAGEMENT PRATIES' AND REMOVE SEDIMENT FROM DETENTION PONDS AND SEDIMENT BASINS AS NEEDED. OLD WEATHER SITE STABILIZATION REQUIREMENTS TO ADEQUATELY PROTET WATER QUALITY DURING OLD WEATHER AND DURING SPRING RUNOFF, THE FOLLOWING ADDITIONAL STABILIZATION TEHNIQUES SHALL BE EMPLOYED DURING THE PERIOD FROM OTOBER 5 THROUGH MAY :. THE AREA OF EXPOSED, UNSTABILIZED SOIL SHALL BE LIMITED TO ONE ARE AND SHALL BE PROTETED AGAINST EROSION BY THE METHODS DESRIBED IN THIS SETION PRIOR TO ANY THAW OR SPRING MELT EVENT. THE ALLOWABLE AREA OF EXPOSED SOIL MAY BE INREASED IF A WINTER ONSTRUTION PLAN, DEVELOPED BY A QUALIFIED ENGINEER OR A PES SPEIALIST, IS REVIEWED AND APPROVED BY NHDES. 2. ALL PROPOSED VEGETATED AREAS HAVING A SLOPE OF LESS THAN 5% WHIH DO NOT EXHIBIT A MINIMUM OF 85% VEGETATIVE GROWTH BY OTOBER 5, OR WHIH ARE DISTURBED AFTER OTOBER 5, SHALL BE SEEDED AND OVERED WITH 3 TO 4 TONS OF HAY OR STRAW MULH PER ARE SEURED WITH ANHORED NETTING OR TAKIFIER, OR 2 INHES OF EROSION ONTROL MIX MEETING THE RITERIA OF ENVWQ (D) THROUGH (H). 3. ALL PROPOSED VEGETATED AREAS HAVING A SLOPE OF GREATER THAN 5% WHIH DO NOT EXHIBIT A MINIMUM OF 85% VEGETATIVE GROWTH BY OTOBER 5, OR WHIH ARE DISTURBED AFTER OTOBER 5, SHALL BE SEEDED AND OVERED WITH A PROPERLY INSTALLED AND ANHORED EROSION ONTROL BLANKET OR WITH A MINIMUM 4 INH THIKNESS OF EROSION ONTROL MIX MEETING THE RITERIA OF ENVWQ (D) THROUGH (H). 4. INSTALLATION OF ANHORED HAY MULH OR EROSION ONTROL MIX, MEETING THE RITERIA OF ENVWQ (D) THROUGH (H), SHALL NOT OUR OVER SNOW OF GREATER THAN ONE INH IN DEPTH. 5. INSTALLATION OF EROSION ONTROL BLANKETS SHALL NOT OUR OVER SNOW OF GREATER THAN ONE INH IN DEPTH OR ON FROZEN GROUND. 6. ALL PROPOSED STABILIZATION IN AORDANE WITH NOTES 2 OR 3 ABOVE, SHALL BE OMPLETED WITHIN A DAY OF ESTABLISHING THE GRADE THAT IS FINAL OR THAT OTHERWISE WILL EXIST FOR MORE THAN 5 DAYS. 7. ALL DITHES OR SWALES WHIH DO NOT EXHIBIT A MINIMUM OF 85% VEGETATIVE GROWTH BY OTOBER 5, OR WHIH ARE DISTURBED AFTER OTOBER 5, SHALL BE STABILIZED TEMPORARILY WITH STONE OR EROSION ONTROL BLANKETS APPROPRIATE FOR THE DESIGN FLOW ONDITIONS, AS DETERMINED BY THE OWNER S ENGINEERING ONSULTANT. 8. AFTER NOVEMBER 5, INOMPLETE ROAD OR PARKING AREAS WHERE ATIVE ONSTRUTION OF THE ROAD OR PARKING AREA HAS STOPPED FOR THE WINTER SEASON SHALL BE PROTETED WITH A MINIMUM 3 INH LAYER OF BASE OURSE GRAVELS MEETING THE GRADATION REQUIREMENTS OF NHDOT STANDARD SPEIFIATION FOR ROAD AND BRIDGE ONSTRUTION, 2006, ITEM 304. OR ONSTRUTION SEQUENE. PREPARE AN EROSION ONTROL PLAN IN AORDANE WITH LOAL, STATE, AND FEDERAL REQUIREMENTS. 2. UT AND LEAR TREES WITHIN THE LEARING LIMITS. 3. INSTALL SILT FENES, ROK HEK DAMS, AND OTHER APPROPRIATE EROSIONS ONTROL MEASURES AT LOATIONS SHOWN ON THE PLANS AND AS NEEDED. 4. GRUB SITE WITHIN GRADING LIMITS. 5. STRIP AND STOKPILE TOPSOIL AND INSTALL ADDITIONAL EROSION ONTROL MEASURES AS NEEDED. 6. PROEED WITH DEMOLITION WORK, LIMITING THE DURATION OF DISTURBANE. THE MAXIMUM LENGTH OF TIME THAT A WORK UNIT MAY BE LEFT UNSTABILIZED IS 30 DAYS. 7. ONSTRUT PROPOSED STREAM HANNEL PRIOR TO DEMOLITION OF EXISTING ULVERT. 8. ONSTRUT PERMANENT DRAINAGE FEATURES AS SOON AS POSSIBLE TO ALLOW STABILIZATION BEFORE DIRETING FLOWS TO FEATURES. 9. BEGIN SEEDING AND MULHING IMMEDIATELY AFTER GRADING. ALL DISTURBED AREAS SHALL BE STABILIZED WITH APPROVED METHODS WITHIN 4 DAYS OF AHIEVING FINISHED GRADE. AN AREA SHALL BE ONSIDERED STABLE IF ONE OF THE FOLLOWING HAS OURRED: A) BASE OURSE GRAVELS HAVE BEEN INSTALLED IN AREAS TO BE PAVED; B) A MINIMUM OF 85% VEGETATED GROWTH HAS BEEN ESTABLISHED; ) A MINIMUM OF 3" OF NONEROSIVE MATERIAL SUH AS STONE OR RIPRAP HAS BEEN INSTALLED; OR D) EROSION ONTROL BLANKETS HAVE BEEN PROPERLY INSTALLED. 0. INSPET ALL EROSION ONTROL MEASURES ON A DAILY BASIS AND AFTER EVERY 0.5 INHES OF PREIPITATION. MAINTAIN SILT FENE, SEDIMENT TRAPS, HAY BALES, ET., AS NEESSARY.. PAVE DRIVEWAY AND/OR PARKING AREAS. 2. PLAE TOPSOIL, SEED AND MULH. 3. OMPLETE ALL REMAINING PERMANENT EROSION ONTROL STRUTURES. 4. MONITOR THE SITE AND MAINTAIN STRUTURES AS NEEDED UNTIL FULL VEGETATION IS ESTABLISHED. DRAIN PIPE, SEE PLAN FOR SIZE 2'0" MINIMUM 4'0" MAXIMUM 6" MIN. UNDISTURBED EARTH OR LEDGE 30" 6'0" FLEXIBLE WATERTIGHT BOOT (TYP) 3 4 " RUSHED STONE 8" MINIMUM DEPTH NOTE: ONTRATOR SHALL PROVIDE SHOP DRAWINGS TO ONFIRM ADEQUATE DIAMETER AND INVERTS. EXISTING GROUND OR FINISH GRADE DRAIN MANHOLE DETAIL NOT TO SALE BRIK AS REQUIRED TO ADJUST FRAME AND OVER TO GRADE, FIVE OURSES MAXIMUM EENTRI ONE SETION (REINFORED ONRETE SLAB RATED FOR H20 LOADING MAY BE USED WHERE MANHOLE DEPTH IS LESS THAN 6') OVERLAPPING TYPE JOINT SEALED WITH DOUBLE ROW OF BITUMASTI (TYPIAL) PREAST ONRETE BARREL SETIONS AS REQUIRED PREAST ONRETE BASE 4" OMPATED LOAM AND SEEDED SUITABLE BAKFILL UNDISTURBED SOIL SEURELY ATTAH TO BANK PER MFGR'S INSTRUTIONS ABLE D 3'0" MIN. OR D+2 (WHIHEVER IS GREATER) INTEGRAL FLOATATION PAVEMENT PER TYPIAL SETION 6" RUSHED GRAVEL 2" GRAVEL TYPIAL DRAINAGE TRENH DETAIL NOT TO SALE ROADWAY BAKFILL SHALL ONFORM TO TOWN REQUIREMENTS 2" MIN. SAND USHION 3/4" RUSHED STONE BEDDING FOR FULL WIDTH OF THE TRENH UP TO SPRING LINE OF PIPE 6" BELOW PIPE IN EARTH 2" BELOW PIPE IN LEDGE WATER LEVEL ROK 4. DETERMINE RESPONSIBILITY FOR LONG TERM MAINTENANE OF PERMANENT 'BEST MANAGEMENT PRATIES'. 5. IF ONSTRUTION IS ANTIIPATED DURING WINTER MONTHS, GRADED AREAS ARE TO BE STABILIZED WITH NORTH AMERIAN GREEN DS50 MATTING OR EQUAL. 4" LOAM, MULH AND SEED MIRAFI FILTERWEAVE FW 700 GEOTEXTILE FABRI, OR EQUAL EXTEND TO GROUND SURFAE 24" (TYP.).5 WEIGHTED BOTTOM LAKE BED. FLOATING TURBIDITY BARRIER SHALL BE TYPE I FLOATING TURBIDITY BARRIER AS MANUFATURED BY AF ENVIRONMENTAL OR APPROVED EQUAL. 2. INSTALL PER MANUFATURER'S REOMMENDATIONS. 3. TURBIDITY BARRIER SHALL BE DEPLOYED DURING ATIVITIES WHIH HAVE THE POTENTIAL TO AUSE TURBIDITY. BARRIER SHALL BE TEMPORARILY REMOVED WHEN SIGNIFIANT IE OR FLOATING DEBRIS IS EXPETED AND NO WORK IS TAKING PLAE. STONE FILL, SEE STONE SPEIFIATIONS FLOATING TURBIDITY BARRIER DETAIL NOT TO SALE 3'0" (TYP) STONE SPEIFIATIONS FOR STREAM RESTORATION 9'0" (TYP) R:\ arlson Permitting\DWGS\Final\ arlson Final 06_22x34.dwg, Detail, 5/9/207 3:0: PM, Hernick STONE FOR STONE FILL SHALL BE AN APPROVED OMBINATION OF QUARRY STONE, ROUNDED STONE OR BROKEN ROK OF A HARD, SOUND, AND DURABLE QUALITY. THE STONES AND SPALLS SHALL BE SO GRADED AS TO PRODUE A DENSE FILL WITH A MINIMUM OF VOIDS.. STREAM RESTORATION STONE SHALL BE IRREGULAR IN SHAPE WITH AT LEAST 75% OF THE MASS HAVING A MINIMUM DIMENSION OF 8INHES. STONE SIZE SHOULD VARY FROM A MINIMUM OF 6 INHES TO 24 INHES. STONE SHALL BE A OMBINATION OF ROUNDED AND ANGULAR STONE. STONE SHALL MATH THE STONE FOUND IN THE STREAM HANNEL UPSTREAM FROM THE LAMSON LANE ULVERT TO THE GREATEST EXTENT POSSIBLE. ONTRATOR MAY USE EXISTING STONE AND BOULDERS ON SITE INLUDING RETAINING WALL STONE. LARGE STONE VOIDS SHOULD BE FILLED WITH SPALLS. STONE SHALL BE PLAE 8" THIK. STONES LARGER THAN 8" ARE INTENDED TO PROJET INTO HANNEL SETION. THE INTENT IS TO MIMI THE UPSTREAM HANNEL 2. SPALLS FOR FILLING VOIDS SHALL ONSIST OF A MIXTURE OF STONES OR ROK FRAGMENTS AND PARTILES WITH 95 TO 00% PASSING THE 3INH SIEVE AND 25 TO 70% PASSING THE 4 SIEVE. REFERENE ELEVATION = " THIK STREAM RESTORATION STONE (SEE STREAM HANNEL SIMULATION DETAIL) 3'x3'xHANNEL WIDTH STONE STABILIZATION KEY 2' MINIMUM STONE LINED OUTLET DETAIL NOT TO SALE 6" GRAVEL BEDDING MIRAFI FILTERWEAVE FW 700 GEOTEXTILE FABRI, OR EQUAL. EXTEND TO GROUND SURFAE. STAKE WITH 8" GROUND STAPLES PER MANUFATURER'S REOMMENDATION. KEY GEOTEXTILE IN TO STONE AT 40' INTERVALS. NATIVE GROUND STABILIZE ENTIRE PILE WITH VEGETATION OR OVER MINIMUM SLOPE SOIL STOKPILING IS TO BE USED WHERE TOPSOIL IS NEESSARY FOR REGRADING AND VEGETATING DISTURBED AREAS. TEMPORARY STOKPILE STABILIZATION MEASURES INLUDE VEGETATIVE OVERS, MULH, NONVEGETATIVE OVERS, AND PERIPHERAL SEDIMENT TRAPPING BARRIERS. THE STABILIZATION MEASURE(S) SELETED SHOULD BE APPROPRIATE FOR THE TIME OF YEAR, SITE ONDITIONS, AND REQUIRED PERIOD OF USE. STRAWBALES OR SILT FENE NOT TO SALE 2 MAXIMUM SOIL STOKPILING DETAIL MINIMUM SLOPE INSTALLATION. AREA HOSEN FOR STOKPILING OPERATIONS SHALL BE DRY AND STABLE. 2. MAXIMUM SLOPE OF STOKPILE SHALL BE 2:. 3. UPON OMPLETION OF SOIL STOKPILING, EAH PILE SHALL BE SURROUNDED WITH EITHER SILT FENING OR STRAWBALES AND THEN STABILIZED WITH VEGETATION OR OVERED. ONSTRUTION NOTES FOR SEDIMENT FENE. WOVEN WIRE FENE, IF REQUIRED, TO BE FASTENED SEURELY TO FENE POSTS WITH WIRE TIES OR STAPLES. 2. FILTER LOTH TO BE FASTENED SEURELY TO WOVEN WIRE FENE WITH TIES SPAED EVERY 24" AT TOP, MID SETION, AND BOTTOM. 3. WHEN TWO SETIONS OF FILTER LOTH ADJOIN EAH OTHER, THEY SHALL BE OVERLAPPED BY 6 INHES, FOLDED AND STAPLED. 4. MAINTENANE SHALL BE PERFORMED AS NEEDED AND MATERIAL REMOVED WHEN "BULGES" DEVELOP IN THE SILT FENE, OR 50% OF ITS STORAGE IS USED. STREAM HANNEL SIMULATION WOVEN WIRE FENE (4/2 GA. MIN., MAX. 6" MESH SPAING) WITH FILTER LOTH OVER UNDISTURBED GROUND FLOW NOT TO SALE FLOW SEDIMENT FENE NO SALE 36" MIN. FENE POSTS, DRIVEN MIN. 6" INTO GROUND 0' MAX.. TO. FLOW EMBED FILTER LOTH MIN. 8" INTO GROUND HEIGHT OF FILTER 8" = 6" MIN. 6" 20" 207 Littleton NH New London NH Newport VT DATE REVISION DESRIPTION DATE: ENGIN'D BY: HEK'D BY: 30 ENG PROJET #: DRAWN BY: JH ARHIVE #: H DWG

5 GENERAL NOTES ROKERY WALL. THE WALL DETAIL(S) DEPITED ON THESE PLANS ARE ONEPTUAL. SITE SPEIFI DESIGN SHOULD BE OMPLETED BY A GEOTEHNIAL ENGINEER BASED ON SITE SPEIFI SOIL AND GROUNDWATER ONDITIONS AT THE WALL LOATIONS. 2. WALL ONSTRUTION AND INSPETION SHOULD BE OMPLETED IN AORDANE WITH ROKERY DESIGN AND ONSTRUTION GUIDELINES, FHWAFL/TD06006, NOVEMBER EXAVATIONS SHALL BE EXTENDED TO AT LEAST 2.5 FEET BELOW FINISH GRADE TO ALLOW FOR WALL EMBEDMENT AND LEVELING OURSE. THE BASE OF THE EXAVATION SHALL BE INLINED BAK AWAY FROM THE FAE OF THE ROKERY, AT 5 PERENT. 4. ROKS SHOULD BE PLAED IN ROWS SUH THAT BASE ROKS ONSIST OF LARGEST DIAMETER AND WEIGHT ROKS AND EAH SUEEDING ROW ONSISTS OF SMALLER DIAMETER ROKS. BASE ROKS SHALL BE EQUAL TO ABOUT ½ THE WALL HEIGHT AND NOT LESS THAN 4 FEET IN DIAMETER. AP ROKS SHALL BE EQUAL TO ABOUT /3 THE WALL HEIGHT AND NOT LESS THAN 9 INHES IN DIAMETER. 5. ROKS SHALL BE HARD, ANGULAR AND DURABLE. THEY MUST BE ABLE TO RESIST PHYSIAL, LIMATI, AND HEMIAL DEOMPOSITION. ROKS SHOULD BE ROUGHLY RETANGULAR, TABULAR OR UBI IN SHAPE. ROUNDED OBBLES OR BOULDERS MUST NOT BE USED. 6. ROKS SHOULD BE PLAED WITH LONGEST DIMENSION PERPENDIULAR TO ROKERY FAE. THE ROKS SHOULD BE PLAED SUH THAT THEY SLOPE DOWNWARD AT LEAST 5 PERENT TOWARDS THE BAK OF THE ROKERY. 7. THE ROKERY FAE BATTER SHOULD BE 4V:H OR FLATTER. o EAH ROK SHOULD BEAR ON AT LEAST TWO OTHER ROKS. o EAH ROK SHOULD HAVE AT LEAST THREE BEARING POINTS TWO IN FRONT AND ONE IN BAK. o THE FRONTMOST BEARING POINTS FOR EAH ROK SHOULD BEWITHIN 50MM (6IN) OF THE AVERAGE FAE OF THE ROKERY. o THE REAR OF THE ROKS SHOULD BE ALIGNED ALONG AN IMAGINARY VERTIAL PLANE. IF ROKS LARGER THAN THE MINIMUM SPEIFIED BASE WIDTH (B) ARE USED, THEY AN EXTEND BEYOND THIS IMAGINARY PLANE PROVIDED THEY DO NOT INTERFERE WITH ROKERY DRAINAGE OR REINFORED ZONE. 8. THERE SHOULD BE NO VERTIAL OLUMNS OF ROK OR ONTINUOUS VERTIAL JOINTS BETWEEN MULTIPLE ROWS OF ROKS. 9. ROK WIDTH SHALL BE LARGE ENOUGH TO EXTEND FROM THE FRONT FAE TO THE BAK OF THE ROKERY AT EAH LEVEL. 0.PLAE BASE, FAING AND AP ROKS SO THAT THEIR HEIGHT DIMENSION IS NOT GREATER THAN THEIR WIDTH. THE LONGEST DIMENSION OF THE BASE, FAING, AND AP ROKS IS PERPENDIULAR TO FAE OF ROKERY..VOIDS BETWEEN ROKS SHOULD BE AVOIDED AS MUH AS POSSIBLE. HOWEVER, IN AREAS WHERE VOIDS EXIST, THE VOIDS SHALL BE HINKED. HINK ROKS SHOULD ONSIST OF SPALLS FROM THE PARENT (FAING) ROK. HINK ROKS SHOULD NOT BE MOVABLE BY HAND AND SHOULD BE GROUTED IN PLAE WHERE APPROPRIATE. HINKING ROKS SHOULD NOT BE USED AS A MEANS OF SUPPORT FOR OVERLYING FAING ROKS. 2.AP ROKS ARE THE TOP ROW OF FAING ROKS FOR ROKERIES. AP ROKS ARE TYPIALLY SMALLER AND FLATTER THAN THE OTHER FAING ROKS USED IN THE ROKERY. AP ROKS SHALL HAVE A WEIGHT OF AT LEAST 200 POUNDS. AP ROKS SHOULD NOT BE MOVABLE BY HAND. REGARDLESS OF SIZE, AP ROKS SHALL BE GROUTED IN PLAE TO REDUE THE POTENTIAL FOR DISLODGING. 3.RUSHED ROK SHOULD ONSIST OF RUSHED, WASHED, HARD, DURABLE ROK MEETING THE FOLLOWING GRADATION REQUIREMENTS: RUSHED ROK SIEVE SIZE PERENT FINER BY WEIGHT 50MM (6IN) 00 00MM (4 IN) MM (3/4 IN) MM ( 4) MM ( 200) IMPERMEABLE LAY OR LOAM AP RUSHED ROK (6INH MINUS) DRAINAGE SWALE (SEE SITE PLANS) GEOTEXTILE WRAP (MIRAFI 60N OR EQUAL) 4" (PV OR HDPE) PERFORATED DRAIN PIPE 2 5% 0.3 H (MIN. 9") 0.5 H (MINIMUM 4 FT.) ROKERY WALL DETAIL NOT TO SALE 4 MAX. 2" MIN. H (8 FT. MAX) EMBEDMENT 8" MIN. EDGE OF PAVEMENT 2'4" 36" BEAM GUIDE RAIL / WOOD POSTS 4'6" 2" 4x8 PRESSURE TREATED WOOD RAIL (REESS INTO POST) 0x0 PRESSURE TREATED WOOD POST SEE PLAN FOR SLOPE 2" BANK RUN GRAVEL SEE TYPIAL PAVEMENT SETION. WOOD POST SHALL BE SPAED 6'3" ENTER TO ENTER ROUGH UT LUMBER 2. SEE ROUGH UT ARPENTRY AND HEAVY TIMBER ONSTRUTION SPEIFIATIONS 3. ONTRATOR SHALL SUBMIT SHOP DRAWING PRIOR TO FABRIATION. NOT TO SALE " 6" RUSHED RUN GRAVEL SEE TYPIAL PAVEMENT SETION GALVANIZED BOLT ASSEMBLY BOTTOM EL= SURROUNDING GRADE ELEV: " MULH MEDIA BOTTOM EL= NATIVE SOIL LOAM & SEED (TYP.) PLANTINGS AS SPEIFIED BY BONIN ARHITETS 8" NYLOPLAST BASIN W/ GRATE GRATE ELEV. = " PV OUT INV. = YR STORM EL= FILTER MEDIA 8" DEEP SETION AA 2: A PLAN VIEW 6" PV OUTLET PIPE L=36', S=0.02 6" MIN. SUMP BIORETENTION AREA # A PROPOSED HOUSE. BIORETENTION AREA PLANTINGS SHALL BE SPEIFIED BY BONIN ARHITETS IN OMPLIANE WITH NEW HAMPSHIRE STORMWATER MANUAL GUIDANE FOR BIORETENION AREAS. 2. FILTER MEDIA SHALL MEET ONE OF THE FOLLOWING SPEIFIATIONS: A. 50% TO 55% BY VOLUME SAND ALSO IDENTIFIED AS ASTM 33 ONRETE SAND, 20% TO 30% BY VOLUME OF LOAMY SAND TOPSOIL WITH 5% TO 25% FINES PASSING THE NUMBER 200 SIEVE, AND 20% TO 30% BY VOLUME MODERATELY FINE SHREDDED BARK OR WOOD FIBER MULH WITH LESS THAN 5% PASSING THE NUMBER 200 SIEVE; B. 20% TO 30% BY VOLUME OF MODERATELY FINE SHREDDED BARK OR WOOD FIBER MULH THAT HAS NO MORE THAN 5% FINES PASSING THE NUMBER 200 SIEVE, WITH 70 TO 80% BY VOLUME LOAMY OARSE SAND USED IN THE MIXTURE MEETING THE FOLLOWING SIEVE ANALYSIS SPEIFIATION:. FROM 85 TO 00 PERENT BY WEIGHT SHALL PASS THE NUMBER 0 SIEVE; 2. FROM 70 TO 00 PERENT BY WEIGHT SHALL PASS THE NUMBER 20 SIEVE; 3. FROM 5 TO 40 PERENT BY WEIGHT SHALL PASS THE NUMBER 60 SIEVE;AND 4. FROM 8 TO 5 PERENT BY WEIGHT SHALL PASS THE NUMBER 200 SIEVE. DIRET ROOF DOWNSPOUTS TO BIORETENTION AREA. 2. THE BIORETENTION AREA FUNTIONS BY INFILTRATING STORMWATER. ENSURE THAT ADJAENT FOUNDATION WALLS ARE ADEQUATELY WATERPROOFED FOR ONTINUAL ONTAT WITH SATURATED SOIL. SEE PLANS AND BY OTHERS 4.WHERE LOOSE, SOFT, OR OTHERWISE UNSUITABLE FOUNDATION SOIL ONDITIONS ARE ENOUNTERED, ONTAT THE ENGINEER FOR SUPPLEMENTAL REOMMENDATIONS. 5.DISHARGE OUTLET PIPES TO A PROTETED OUTLET OR OTHER PERMANENET DRAINAGE STRUTURE AT LOW POINTS IN THE ROKERY. DRAIN OUTLETS SHOULD NOT EMPTY INTO STORM DRAINS THAT ARE DESIGNED TO BAKUP DURING HEAVY FLOWS. 6.STABILITY OF TEMPORARY UT SLOPES IS THE RESPONSIBILITY OF THE ONTRATOR. 7.DO NOT ONSTRUT ROKERIES OR SLOPES EXEEDING THE HEIGHTS SHOWN ON THE PLAN. NATIVE MATERIALS ON SLOPED SUBGRADE NONWOVEN FILTER FABRI SHALL BE USED IN SLOPED SETIONS; MIRAFI 60N OR APPROVED EQUAL 2808AG X () DUTILE IRON GRATE (3,4) 6" PV SDR 35 OUTLET ADAPTERS 8" USTOM DRAIN BASIN (2) 34.75".50" 6" MIN. 6.50" (2) 40.75" NYLOPLAST BASIN DETAIL DETAIL BY NYLOPLAST, FOR REFERENE ONLY GRATES/SOLID OVER SHALL BE DUTILE IRON PER ASTM A536 GRADE , WITH THE EXEPTION OF THE BRONZE GRATE. 2 USTOM DRAIN BASIN TO BE USTOM MANUFATURED AORDING TO PLAN. RISERS ARE NEEDED FOR BASINS OVER 84" DUE TO SHIPPING RESTRITIONS. SEE DRAWING DRAINAGE ONNETION STUB JOINT TIGHTNESS SHALL ONFORM TO ASTM D322 FOR ORRUGATED HDPE (ADS & HANOR DUAL WALL) & SDR 35 PV 4 STANDARD DRAIN BASIN HAS FIXED ADAPTER LOATIONS OF 0 & 80. USTOM DRAIN BASIN ADAPTERS AN BE MOUNTED ON ANY ANGLE 0 TO 360. TO DETERMINE MINIMUM ANGLE BETWEEN ADAPTERS SEE DRAWING DIMENSIONS ARE FOR REFERENE ONLY ATUAL DIMENSIONS MAY VARY BEDDING OURSE USED TO SET PAVERS AND TO FILL SPAES BETWEEN PAVERS ONRETE FLOW BARRIERS, HEK DAMS OR SOIL BERMS ONRETE PAVERS APPROVED BY THE INTERLOKING PAVEMENT INSTITUTE 6" PERFORATED PV OBSERVATION WELL WITH THREADED AP RISER TO GRADE 6" SOLID PV RELIEF OUTLET PIPE WITH PERFORATED SETION WITHIN THE LIMITS OF DRYWELL STONE; ONNET TO PERFORATED RISER ABOVE TOP OF INLET PIPE (SEE PLAN FOR LOATION) 4" THIK HOKER OURSE 2" THIK BEDDING OURSE 6" LOAM, SEED, AND MULH ENTER ON DRIPLINE 2' 4" MIN THIKNESS BANK RUN GRAVEL FILTER OURSE 6" Littleton NH New London NH Newport VT FILTER BLANKET: INTERMEDIATE SETTING BED: 3" THIKNESS OF 3/8" PEA GRAVEL R:\ arlson Permitting\DWGS\Final\ arlson Final 06_22x34.dwg, Detail (2), 5/9/207 3:0:5 PM, Hernick NOT TO SALE 8" 4" FOUNDATION DRAIN STONE DRIP EDGE DETAIL 3/4" /2" RUSHED WASHED STONE 40% VOID SPAE GEOTEXTILE FABRI (MIRAFI FW 700 OR EQUAL) U.S. STANDARD SIEVE SIZE 6" (50mm) 2 /2" (63mm) 2" (50mm) /2" (37.5mm) " (25mm) 3/4" (9mm) /2" (2.5mm) 3/8" (9.5mm) #4 (4.75mm) #8 (2.36mm) NOTE: RESERVOIR OURSE: 8" THIKNESS OF 3/4" RUSHED STONE FOR FROST PROTETION BEDDING OURSE (ASTM No. 8) TO 00 0 TO 30 0 TO 0 NATIVE MATERIALS HOKER OURSE (AASHTO No. 57) PERENT PASSING (%) FILTER OURSE (NHDOT 304.) RESERVOIR OURSE (AASHTO No. 3) RESERVOIR OURSE ALT.* (AASHTO No. 5) *ALTERNATE GRADATION (e.g. AASHTO No. 5) FOR RESERVOIR OURSE MAY BE AEPTED ENGINEER'S APPROVAL. THE ONTRATOR AND OWNER ARE ADVISED TO REFERENE THE "UNHS DESIGN SPEIFIATIONS FOR POROUS ASPHALT PAVEMENT AND INFILTRATION BEDS" FOR ONSTRUTION AND MAINTENANE OF THE PAVEMENT SETION. TYPIAL PATIO SETION PERVIOUS PAVERS NOT TO SALE 6" SOLID PV FROM ROOF DRAINS (SEE PLAN); ONNET TO PERFORATED SETION WITHIN THE LIMITS OF DRY WELL STONE; ONNET TO PERFORATED RISER NON WOVEN GEOTEXTILE FABRI (MIRAFI 35N OR APPROVED EQUAL) ON TOP AND SIDES LEAN 2" 3" STONE BOTTOM OPEN TO NATIVE SOIL (NO FABRI) REBAR ANHOR. SEE PLAN FOR LOATION OF DRYWELLS. 2. PLAE ONE OBSERVATION WELL IN THE ENTER OF EAH DRYWELL. LENGTH WIDTH STONE BOTTOM STONE TOP E.S.H.W.T INLET INV. OUTLET INV. DRY WELL # 5' 2' DRY WELL #2 0' 6' DRY WELL DETAIL NOT TO SALE 24" 6" 207 DATE REVISION DESRIPTION DATE: ENGIN'D BY: HEK'D BY: 302 ENG PROJET #: DRAWN BY: JH ARHIVE #: H DWG

6 TO BE FILLED IN AFTER REORDING