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HomeMy WebLinkAboutLandscapePlan_PasseroRidge5_V2LAWN PHASE FOUR PHASE SIX PHASE SIX PHASE SIX 6' HT SOLID VINYL FENCE. (TYP.) SEE DETAIL 1 ON SHEET 3 6' HT SOLID VINYL FENCE. (TYP.) SEE DETAIL 1 ON SHEET 3 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 (3) HL (6) PE (7) EK (7) EK (8) PE (4) HL (3) PH (5) HL (3) PE (5) PH (3) HL (3) PH (5) HL (3) PH (2) PY (3) CP (5) SR(9) EK (5) SR (2) AT (3) AT (6) TC (3) EK (3) CD (5) EK (4) CD (3) EK (4) CC (4) CC (3) QS (5) SR (5) HL (5) HL (3) EK (2) PY (2) PY (7) AT (9) AT (6) SR (6) EK (2) AT (1) QS (6) SR (19) PE (10) PH (9) PH (17) PE (5) EK (6) CD (5) EK (4) CD (1) EK (1) EK (4) CD (5) EK (6) CD (5) EK (5) AT (14) CD (28) RO LAWN LAWN LAWN LAWN PLAY STRUCTURE WITH PICNIC TABLES (TYP.) SYMBOL CODE COMMON NAME ORNAMENTAL TREES - CLASS I PY YOSHINO CHERRY SHADE TREES - CLASS III QS SHUMARD OAK SHADE/ STREET TREES - CLASS II CO COMMON HACKBERRY TC CORINTHIAN LITTLELEAF LINDEN AT CRIMSON SUNSET MAPLE CP PERKINS PINK YELLOWWOOD CC RISING FIRE AMERICAN HORNBEAM SINGLE-TRUNK SHRUBS PE CASSIAN FOUNTAIN GRASS CD DARK KNIGHT BLUEBEARD HL LITTLE QUICK FIRE HYDRANGEA EK MANHATTAN EUONYMUS RO PINK DRIFT GROUNDCOVER ROSE SR PRAIRIE WINDS LITTLE BLUESTEM PH TINY WINE NINEBARK PLANT SCHEDULE LS-1 1 6' SOLID VINYL FENCE ALONG PROPERTY PERIMETER, BETWEEN LOTS AND ARTERIAL/COLLECTOR STREETS & BLOCK ENDS. SEE DETAIL ON SHEET LS-3 OF LANDSCAPE SET 6' VINYL FENCE WITH LATTICE TOP AT ALL OTHER COMMON LOT AREAS ADJACENT TO LOTS. SEE DETAIL ON SHEET LS-3 OF LANDSCAPE SET LEGEND LAWN 1 inch = ft.GRAPHIC SCALE 40 0 20 40 80 40 FEET NOTES: 1)THIS PLAN IS FOR LANDSCAPE PURPOSES ONLY. 2)REFER TO SHEET LS-3 FOR NOTES AND DETAILS.MATCHLINE SHEET LS-2MATCHLINE SHEET LS-13 PHASE TWO PHASE TWOPHASE THREE 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 (2) PY (3) PH (8) EK (5) PH(5) EK (5) CD (5) PH (7) CO (2) PY (3) HL (3) PE (1) QS (3) RO (9) EK (1) PY (1) PY (1) PY (1) QS (7) EK (3) HL (3) PE (6) RO (6) PE 6' HT SOLID VINYL FENCE WITH LATTICE TOP. (TYP.) SEE DETAIL 2 ON SHEET 3 (5) AT (5) CO (7) CO LAWN LAWN LAWN SYMBOL CODE COMMON NAME ORNAMENTAL TREES - CLASS I PY YOSHINO CHERRY SHADE TREES - CLASS III QS SHUMARD OAK SHADE/ STREET TREES - CLASS II CO COMMON HACKBERRY TC CORINTHIAN LITTLELEAF LINDEN AT CRIMSON SUNSET MAPLE CP PERKINS PINK YELLOWWOOD CC RISING FIRE AMERICAN HORNBEAM SINGLE-TRUNK SHRUBS PE CASSIAN FOUNTAIN GRASS CD DARK KNIGHT BLUEBEARD HL LITTLE QUICK FIRE HYDRANGEA EK MANHATTAN EUONYMUS RO PINK DRIFT GROUNDCOVER ROSE SR PRAIRIE WINDS LITTLE BLUESTEM PH TINY WINE NINEBARK PLANT SCHEDULE LS-2 2 1 inch = ft.GRAPHIC SCALE 40 0 20 40 80 40 FEET NOTES: 1)THIS PLAN IS FOR LANDSCAPE PURPOSES ONLY. 2)REFER TO SHEET LS-3 FOR NOTES AND DETAILS. 3MATCHLINE SHEET LS-2MATCHLINE SHEET LS-16' SOLID VINYL FENCE ALONG PROPERTY PERIMETER, BETWEEN LOTS AND ARTERIAL/COLLECTOR STREETS & BLOCK ENDS. SEE DETAIL ON SHEET LS-3 OF LANDSCAPE SET 6' VINYL FENCE WITH LATTICE TOP AT ALL OTHER COMMON LOT AREAS ADJACENT TO LOTS. SEE DETAIL ON SHEET LS-3 OF LANDSCAPE SET LEGEND LAWN SYMBOL CODE QTY BOTANICAL NAME COMMON NAME CONT SIZE ORNAMENTAL TREES - CLASS I PY 13 PRUNUS X YEDOENSIS YOSHINO CHERRY B & B 2" CAL. SHADE TREES - CLASS III QS 5 QUERCUS SHUMARDII SHUMARD OAK B & B 2" CAL. SHADE/ STREET TREES - CLASS II AT 33 ACER TRUNCATUM 'CRIMSON SUNSET'CRIMSON SUNSET MAPLE B & B 2" CAL. CC 8 CARPINUS CAROLINIANA 'UXBRIDGE' SINGLE-TRUNK RISING FIRE AMERICAN HORNBEAM B & B 2" CAL. CO 19 CELTIS OCCIDENTALIS COMMON HACKBERRY B & B 2" CAL. CP 3 CLADRASTIS KENTUKEA 'PERKINS PINK'PERKINS PINK YELLOWWOOD B & B 2" CAL. TC 6 TILIA CORDATA 'CORZAM' TM CORINTHIAN LITTLELEAF LINDEN B & B 2" CAL. SYMBOL CODE QTY BOTANICAL NAME COMMON NAME CONT.SIZE SHRUBS CD 46 CARYOPTERIS X CLANDONENSIS `DARK KNIGHT`DARK KNIGHT BLUEBEARD 3 GAL. EK 94 EUONYMUS KIAUTSCHOVICUS `MANHATTAN`MANHATTAN EUONYMUS 5. GAL. HL 36 HYDRANGEA PANICULATA `LITTLE QUICK FIRE`LITTLE QUICK FIRE HYDRANGEA CONT.3 GAL. PE 65 PENNISETUM ALOPECUROIDES 'CASSIAN'S CHOICE'CASSIAN FOUNTAIN GRASS 2 GAL. PH 46 PHYSOCARPUS OPULIFOLIUS 'SMPOTW' TM TINY WINE NINEBARK 3 GAL. RO 37 ROSA X `MEIJOCOS` TM PINK DRIFT GROUNDCOVER ROSE 3 GAL. SR 27 SCHIZACHYRIUM SCOPARIUM `BLUE PARADISE` TM PRAIRIE WINDS LITTLE BLUESTEM 2 GAL. PLANT SCHEDULE LS-3 3 NOTES: 1)THIS PLAN IS FOR LANDSCAPE PURPOSES ONLY. FOOTING PER MFG RECOMMENDATIONS 5" x 5" POST 78" x 13 78" PANELS 1 12" x 5 12" RAIL POST CAP TURF FINISHED GRADE CUT EDGE TOP SOIL 3" MULCH PER SPEC LATTICE PANEL PANELS 112" x 512" BOTTOM & CENTER RAIL 5" x 5" POST W/ CAP FOOTING PER MFG RECOMMENDATIONS 1 3/4" x 312" TOP RAIL NOTES: 1. LATTICE TOP FENCE TO BE USED ADJACENT TO INTERIOR OPEN SPACES. 2. FENCE TO STEP DOWN TO 3' HEIGHT 20' FROM ROW. 3. 6" WIDE SOIL TRENCH STRIP TO BE INSTALLED AT BASE OF FENCE ON COMMON LOT SIDE. SEE DETAIL. NOTES: 1. FENCE TO STEP DOWN TO 3' HEIGHT 20' FROM ROW. 2. 6" WIDE SOIL TRENCH STRIP TO BE INSTALLED AT BASE OF FENCE ON COMMON LOT SIDE. SEE DETAIL. TREE PLANTING/ STAKING NOT TO SCALE4 SHRUB PLANTING NOT TO SCALE6 VINYL LATTICE PRIVACY FENCE NOT TO SCALE2 VINYL PRIVACY FENCE NOT TO SCALE1 PLANTER CUT BED EDGE NOT TO SCALE3 DO NOT CUT CENTRAL LEADER. TREES WITH DAMAGED/CUT/BROKEN CENTRAL LEADERS WILL BE REJECTED. ALL DAMAGED BRANCHES TO BE REMOVED 3" MULCH WITH NO MULCH AGAINST TRUNK 3" EARTH SAUCER BACKFILL MIXTURE: 1 PART TOPSOIL, 1 PART PEAT MOSS, 1 PART COURSE SAND REMOVE BURLAP FROM TOP 1/3 OF BALL. NO BURLAP SHALL BE SEEN ABOVE SOIL LINE. ROPE & TWINE TO BE REMOVED FROM PIT. CUT WIRE BASKET IN 4 PLACES, FOLD DOWN 8" INTO HOLE. TOP OF BALL TO BE LEVEL WITH GRADE. ROOT FLARE EXPOSED. NOTE: 1. IF SYNTHETIC WRAP/BURLAP IS USED, IT MUST BE COMPLETELY REMOVED. 2. THE DEPTH OF ROOTBALL SHALL BE NO LESS THAN 60% ITS WIDTH WIDTH 2 X BALL DIA. MIN. 3" DEPTH MULCH AS SPECIFIED. BRUSH AWAY FROM STEM. 3" EARTH SAUCER BACKFILL MIXTURE: 2 PARTS NATIVE SOIL, 1 PART TOP SOIL, 1 PART PEAT MOSS REMOVE BURLAP FROM TOP 1/3 OF BASE, TOP OF BALL TO BE LEVEL WITH GRADE NOTE: 1.SHRUB ROOTBALLS SHALL BE TYPICALLY 12" WIDE. THE DEPTH OF THE ROOTBALL SHALL BE NO LESS THAN 65% ITS WIDTH. 2.DIG HOLE TWICE THE SIZE OF ROOTBALL. WOOD STAKE INTO PREVAILING WIND. SECURE W/ COTTON WEBB'G TYP SIM FOR CONIFER TREE. AVOID END OF STAKE PROTRUDING INTO PEDESTRIAN USE AREAS DEPTHFENCE POST LAWN RESIDENTIAL SIDECOMMON AREA SIDE FENCE LINE DETAIL NOT TO SCALE7 COMPACT SUBGRADE NOTE: SOIL TRENCH TO BE MAINTAINED ON COMMON AREA SIDE OF FENCE ONLY. FENCE SECTION3"CL TOPSOIL FINISHED GRADE 3" FINISHED BARK MULCH SPACING AS SPECIFIED SEE PLANT SCHEDULE COMPACTED SUBGRADE 12" TOP SOIL MIX ANNUAL/PERENNIAL/GRASSES/GROUNDCOVER BEDS NOT TO SCALE5 PHASE FIVE LANDSCAPE CALCULATIONS: STREET LANDSCAPE BUFFER REQUIRED PROVIDED One tree per 35 linear feet and one shrub per 7 linear feet Street landscape buffers along residential streets are measured at common lot areas only. BOATWATCH DR: 112 L.F. PROPOSED TREES: 112 LF / 35 LF = 3 TREES REQUIRED 3 TREES PROVIDED PROPOSED SHRUBS:112 LF / 7 LF = 16 SHRUBS REQUIRED 16 SHRUBS PROVIDED WATER WILLOW AVE: 270 L.F. PROPOSED TREES: 270 LF / 35 LF = 8 TREES REQUIRED 8 TREES PROVIDED PROPOSED SHRUBS:270 LF / 7 LF = 40 SHRUBS REQUIRED 40 SHRUBS PROVIDED LAZY LAGOON AVE: 133 L.F. PROPOSED TREES: 133 LF / 35 LF = 4 TREES REQUIRED 4 TREES PROVIDED PROPOSED SHRUBS:133 LF / 7 LF = 19 SHRUBS REQUIRED 19 SHRUBS PROVIDED 3 6" WIDE SOIL TRENCH STRIP ALONG FENCE LINE LANDSCAPE NOTES: 1. STREET TREES, BUFFER PLANTINGS SHALL BE PLANTED BY PHASE ACCORDING TO THE PHASE IN WHICH IT IS LOCATED. IN LIEU OF PLANTTING DUE TO SEASONAL CONSTRAINTS, THE LOCATIONS OF REQUIRED PLANTS SHALL BE STAKED AND THE DEVELOPER WILL BE REQUIRED TO SUBMIT TO THE CITY/TOWNSHIP A MEMORANDUM SIGNED BY THE PURCHASER AT THE TIME OF SETTLEMENT. THIS MEMORANDUM WILL INDICATE THAT THE PURCHASER UNDERSTANDS AND ACKNOWLEDGES THAT THE STAKES INDICATE THE LOCATION OF REQUIRED TREES TO BE PLANTED BY THE DEVELOPER. 2. GUARANTEE: ALL PLANT MATERIAL SHALL BE GUARANTEED FOR TWELVE (12) MONTHS FROM THE DAY OF FINAL APPROVAL BY THE TOWNSHIP/ CITY ARBORIST OR TOWNSHIP/ CITY ENGINEER. ANY PLANT MATERIAL TWENTY-FIVE PERCENT (25%) OR MORE OF WHICH IS DEAD SHALL BE CONSIDERED DEAD. A TREE SHALL BE CONSIDERED DEAD WHEN THE MAIN LEADER HAS DIED OR TWENTY-FIVE PERCENT (25%) OF THE CROWN IS DEAD. IF THE PLANT FAILS TO SURVIVE DURING THIS PERIOD, REPLACEMENT SHALL BE MADE AT THE BEGINNING OF THE FIRST SUCCESSIVE PLANTING SEASON. ALL REPLACEMENTS SHALL HAVE A GUARANTEE EQUAL TO THAT STATED ABOVE. ANY DEAD PLANT MATERIAL SHALL BE REPLACED AND INSTALLED ACCORDING TO THE APPROVED PLANTING PRACTICES. 3. THE DEVELOPER SHALL CONTACT THE TOWNSHIP/ CITY IN WRITING TO REQUEST A FINAL INSPECTION FOR THE ACCEPTANCE AT THE END OF GUARANTEE PERIOD. THESE INSPECTIONS WILL BE PERFORMED WHEN THE PLANT MATERIALS ARE IN FULL LEAF (MAY 1ST- THROUGH NOVEMBER 15TH). ALL GUARANTEE ESCROW FUNDS WILL BE RELEASED UPON ACCEPTANCE AT THE END OF THE GUARANTEE PERIOD. THE GUARANTEE PERIOD WILL BE EXTENDED UNTIL THIRTY (30) DAYS AFTER THE RECEIPT OF THE REQUESTED LETTER AFTER MAY 1ST. SHOULD THE END OF GUARANTEE PERIOD OCCUR AFTER NOVEMBER 15TH, THE GUARANTEE PERIOD SHALL EXTEND TO MAY 15TH. 4. ALL PLANT MATERIAL SHALL BE STAKED IN THE FIELD AND LOCATIONS APPROVED BY THE LANDSCAPE ARCHITECT PRIOR TO PLANTING. 5. PROPOSED PLANT MATERIAL MAY BE SUBSTITUTED WITH A SIMILAR PLANT PRIOR TO INSTALLATION BASED ON AVAILABILITY, SUBJECT TO APPROVAL BY THE LANDSCAPE ARCHITECT OR TOWNSHIP/CITY ARBORIST. 6. IN THE EVENT THAT ANY DISCREPANCIES BETWEEN THE QUANTITIES OF PLANTS INDICATED ON THE PLANT SCHEDULE AND THOSE INDICATED ON THE PLAN, THE QUANTITIES INDICATED ON THE PLAN SHALL GOVERN. 7. NOTIFY ALL UTILITY COMPANIES PRIOR TO EXCAVATING PLANT PITS. PLANT LOCATIONS MAY BE ADJUSTED IN FIELD TO AVOID INTERFERENCE WITH UTILITIES. 8. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PLANTING AT CORRECT GRADES AND ALIGNMENT. 9. PLANTS SHALL BE TYPICAL OF THEIR SPECIES AND VARIETY; HAVE NORMAL GROWTH HABITS; WELL DEVELOPED BRANCHES, DENSELY FOLIATED, VIGOROUS ROOT SYSTEMS AND BE FREE FROM DEFECTS AND INJURIES. 10.THE CONTRACTOR SHALL REPORT ANY SOIL OR DRAINAGE CONDITION CONSIDERED DETRIMENTAL TO THE GROWTH OF PLANT MATERIAL. 11.QUALITY AND SIZE OF PLANTS, SPREAD OF ROOTS AND SIZE OF BALLS SHALL BE IN ACCORDANCE WITH "AMERICAN STANDARDS FOR NURSERY STOCK" ANSI 260 (MOST RECENT EDITION) AS PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, INC. 12.B & B PLANTS SHALL BE HANDLED FROM THE BOTTOM OF THE ROOT BALL ONLY. PLANTS WITH BROKEN, SPLIT OR DAMAGED ROOT BALLS SHALL BE REJECTED. 13.TREES SHALL BE LOCATED IN A MANNER WHICH WILL NOT OBSTRUCT ACCESS TO FIRE HYDRANT OR VISIBILITY OF STREET OR TRAFFIC SIGNS. NO TREES OR SHRUBS SHALL BE PLANTED IN A SIGHT TRIANGLE. NO TREES SHALL BE PLANTED IN ANY UTILITY OR MUNICIPAL EASEMENTS. 14.PLANTING OPERATIONS SHALL BE PERFORMED DURING PERIODS WITHIN THE PLANTING SEASON WHEN WEATHER AND SOIL CONDITION ARE SUITABLE. SPRING PLANTING SEASON SHALL BE: MARCH 1ST TO JUNE 1ST. FALL PLANTING SEASON SHALL BE: AUGUST 15TH TO DECEMBER 15TH FOR EVERGREEN PLANTS AND SEPTEMBER 15TH TO DECEMBER 15TH, FOR DECIDUOUS PLANTS. 15.SET ALL PLANTS PLUMB AND STRAIGHT. SET AT SUCH LEVEL THAT, AFTER SETTLEMENT, A NORMAL OR NATURAL RELATIONSHIP TO THE CROWN OF THE PLANT WITH THE GROUND SURFACE WILL BE ESTABLISHED. LOCATE PLANTS IN THE CENTER OF THE PLANTING PIT. 16.TREES SHALL BE SUPPORTED IMMEDIATELY AFTER PLANTING IN ACCORDANCE WITH THE PLANTING DETAILS. 17.THE CONTRACTOR SHALL GIVE ALL NOTICES AND COMPLY WITH ALL LAWS, ORDINANCES, RULES, REGULATIONS AND LAWFUL ORDERS OF ANY PUBLIC AUTHORITY BEARING UPON THE PERFORMANCE OF THE WORK. 18.TREE PROTECTION DURING CONSTRUCTION: TREE PROTECTION AREAS SHALL BE DELINEATED TO IMPLEMENT THE STANDARDS CONTAINED IN THE LOCAL ZONING ORDINANCE AND THIS ORDINANCE REGARDING PRESERVATION OF TREES, WOODLANDS, AND FORESTS DURING THE DEVELOPMENT AND CONSTRUCTION PROCESS. 19.TREE PROTECTION AREA: AN AREA THAT IS RADIAL TO THE TRUNK OF A TREE. THE TREE PROTECTION AREA SHALL BE 15 FEET FROM THE TRUNK OF THE TREE TO BE RETAINED, OR THE DISTANCE FROM THE TRUNK TO THE DRIP LINE (THE LINE MARKING THE OUTER EDGE OF THE BRANCHES OF THE TREE) WHICHEVER IS GREATER. WHERE THERE IS A GROUP OF TREES OR WOODLANDS, THE TREE PROTECTION AREA SHALL BE THE AGGREGATE OF THE PROTECTION AREAS FOR THE INDIVIDUAL TREES. 20.ALL LANDSCAPE SHALL BE INSTALLED IN ACCORDANCE WITH THE CITY ORDINANCE REQUIREMENTS. 21.ALL PLANTING AREAS TO BE WATERED WITH AN AUTOMATIC UNDERGROUND IRRIGATION SYSTEM. 22.TREES SHALL NOT BE PLANTED WITHIN THE 10-CLEAR ZONE OF ALL STORM DRAIN PIPE, STRUCTURES, OR FACILITIES. SEEPAGE BEDS MUST BE PROTECTED FROM ANY AND ALL CONTAMINATION DURING THE CONSTRUCTION AND INSTALLATION OF THE LANDSCAPE IRRIGATION SYSTEM. ALL SHRUBS PLANTED OVER OR ADJACENT TOSEEPAGE BEDS TO HAVE A ROOT BALL THAT DOES NOT EXCEED 18" IN DIAMETER. NO LAWN SOD TO BE PLACED OVER DRAINAGE SWALE SAND WINDOWS. 23.NO TREES SHALL IMPEDE THE 40' VISION TRIANGLES AT ALL INTERSECTIONS. NO CONIFEROUS TREES OR SHRUBS OVER 3' HIGH AT MATURITY WILL BE LOCATED WITHIN THE VISION TRIANGLE OR ROW. AS TREES MATURE, THE OWNER SHALL BE RESPONSIBLE FOR PRUNING TREE CANOPIES TO MEET REQUIREMENTS FOR MAINTAINING CLEAR VISIBILITY WITHIN 40' STREET AND DEPARTURE VISION TRIANGLE. TREES SHALL BE PLANTED NO CLOSER THAN 50' FROM INTERSECTION STOP SIGNS. 24.LANDSCAPE AND TREES IN FRONT OF BUILDING LOTS ON INTERIOR STREETS TO BE COMPLETED DURING CONSTRUCTION OF THESE LOTS. TREE LOCATIONS MAY BE ALTERED TO ACCOMMODATE DRIVEWAYS AND UTILITIES. TREES SHALL NOT BE PLANTED WITHIN 5' OF WATER METERS OR UTILITY LINES. 25.PLANT LIST IS REPRESENTATIVE AND SUBJECT TO ADDITIONS AND/OR SUBSTITUTIONS OF SIMILAR SPECIES THAT ARE SUBJECT TO CITY FORESTER'S PRE-APPROVAL. BURLAP AND WIRE BASKETS TO BE REMOVED FROM ROOT BALL AS MUCH AS POSSIBLE, AT LEAST HALFWAY DOWN THE BALL OF THE TREE. ALL NYLON ROPES TO BE COMPLETELY REMOVED FROM TREES. 26.MULCHING: MULCH SHALL BE USED IN ALL REQUIRED PLANTING AREAS. APPROVED MULCHES MAY BE ORGANIC, SUCH AS BARK OR SOIL AID, OR THEY MAY INCLUDE ROCK PRODUCTS, SUCH AS "PERMABARK" OR SIMILAR PRODUCTS. USE OF MULCH, ORGANIC OR ROCK, AS THE ONLY GROUND COVER IN REQUIRED PLANTING AREAS IS PROHIBITED. PEA GRAVEL, DRAIN ROCK, ROAD BASE GRAVEL, AND SIMILAR PRODUCTS SHALL NOT BE USED AS MULCH. ALL MULCH SHALL BE CONTAINED BY A CURB OR OTHER EDGING MATERIAL, SUCH AS EDGKING TO CONTAIN THE MULCH AND PREVENT IT FROM MIGRATING TO ADJACENT SURFACES. IF ROCK MULCH IS USED, A WEED BARRIER FABRIC SHALL BE USED BENEATH THE ROCK. IMPERMEABLE PLASTIC WEED BARRIERS ARE PROHIBITED BECAUSE THEY RESTRICT WATER AND OXYGEN TO THE PLANTS WITHIN STORMWATER FACILITIES, MULCH MAY NOT FLOAT.