HomeMy WebLinkAboutDelaney Park - Buffer Restoration PlanKing Cminty
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5711 NORTHEAST 63RD ST. SEATTLE, WA 98115
(206) 525-8122 FAX: (206) 526-2880
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LANDSCAPE KEY
PLAN
SYMBOL
DETAIL
SYMBOL SCIENTIFIC NAME
COMMON NAME
MIN. SIZE
REMARKS
TYP.
SPACING
TOTAL
SHRUBS
• Holodiscus discolor
OCEANSPRAY
24" ht .
2 gal.
5' O.C.
30
+ Ribes sanguineum
REDFLOWER CURRANT
24" ht .
2 gal.
5' O.C.
30
Rosa gymnocarpa
DWARF ROSE
24" ht .
2 gal.
5' O.C.
30
oo ubus spectabilis
SALMONBERRY
24" ht .
2 gal.
5' O.C.
30
Symphoricarpus albus
COMMON SNOWBERRY
24" ht .
2 gal.
5' O.C.
30
TYPICAL PLANTING LAYOUT
NOTE: AVOID PLANTING DIRECTLY OVER SEWER LINE
B&B OR CONTAINERIZED
SHRUB (TYP)
SET ALL PLANTS AT NURSERY
LEVEL (TYP)
,,-MIN 20-3" OF MULCH
SHRUB PLANTING PIT
PREPARATION = ROOTBALL
DEPTH & WIDTH PLUS 1'-0"
ADDITIONAL ALL SIDES
FINISH GRADE
ADDITIONAL PLANTING
AREA PREPARATION
PER DRAWINGS
REMOVE CONTAINER COMPLETELY
OR REMOVE BURLAP FROM TOP
2/3 OF ROOTBALI-
REMOVE ALL HARE AND
STRING
NATIVE BACKFILL SOIL
AMENDED WITH 25%
DECOMPOSED ORGANIC
ROOTBALL + 1'-0'MIN ALL SIDES MULCH AMMENDMENT
UNDISTURBED SUBGRADE
(PROVIDES FIRM BASE SO
THAT ROOTBALL WILL NOT
SINK)
SHRUB PLANTING DETAIL
NOT TO SCALE
City of 1,ilOnton
plannln� �)1�'EStQCI
MAY 19 P110
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Planning Division
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STATE OF
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REGISTERED
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DUANE DIETZ
CERTIFICATE NO. 649
RAEDEKE ASSOCIATES, INC.
5711 NORTHEAST 63RD ST. SEATTLE, WA 98115
(206) 525-8122 FAX: (206) 526-2880
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11-11
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1.0 GENERAL CONDITIONS
1.1 GENERAL DESCRIPTION
FURNISH ALL MATERIALS, TOOLS, EQUIPMENT, AND LABOR NECESSARY FOR THE COMPLETION
OF GRADING AND PLANTING INSTALLATION AS INDICATED ON DRAWINGS AND SPECIFIED
HEREINAFTER. WORK INCLUDES VEGETATION PLANTING, FERTILIZING, MULCHING,
MAINTENANCE AND GUARANTEE OF PLANTED AREAS AS SPECIFIED HEREIN.
1.2 CONSTRUCTION SEQUENCE
1. SCHEDULE AND ATTEND A PRE -CONSTRUCTION MEETING WITH PROJECT BIOLOGIST
AND CITY OF RENTON STAFF.
2. CONTRACTOR WILL FLAG ALL MITIGATION AREAS FOR BIOLOGIST APPROVAL.
CONTRACTOR WILL WALK THE SITE WITH THE PROJECT BIOLOGIST TO CLARIFY LIMITS
OF CONSTRUCTION AND THE WORK TO BE PERFORMED. CONTRACTOR WILL SUBMIT A
WORK PLAN TO THE PROJECT BIOLOGIST/SPECIAL INSPECTOR FOR APPROVAL PRIOR
TO THE COMMENCEMENT OF WORK.
3. CONTRACTOR SHALL PLACE SALVAGED TOPSOIL AND GRADE AREAS TO FINISH GRADE
ELEVATIONS. BIOLOGIST SHALL INSPECT FINISH GRADE ELEVATIONS.
4. CONTRACTOR SHALL LAYOUT NURSERY -GROWN PLANTS PER PLANS FOR APPROVAL
BY BIOLOGIST. FOLLOWING LAYOUT APPROVAL, CONTRACTOR TO INSTALL PLANTS AS
DIRECTED BY PLANS. BIOLOGIST WILL APPROVE PLANT INSTALLATION.
5. PLANT ACCEPTANCE AND GUARANTEE, SUBMIT AS -BUILT DRAWING TO BIOLOGIST.
6. COMPLIANCE ACCEPTANCE BY THE CITY OF RENTON.
1.3 CONSTRUCTION OBSERVATION / QUALITY ASSURANCE / GUARANTEE
THE PROJECT BIOLOGIST (BIOLOGIST) SHALL BE INVOLVED DURING THE FOLLOWING PHASES
OF CONSTRUCTION: (1) ON -SITE MEETING PRIOR TO COMMENCEMENT OF WORK
(PRE -CONSTRUCTION MEETING); (2) APPROVAL OF PLACEMENT OF TOPSOIL AND FINISH
GRADES; (3) APPROVAL OF PLANTS, PLANTING LOCATIONS AND TECHNIQUES; (4) COMPLIANCE
ACCEPTANCE; AND (5) FINAL INSPECTION. PRIOR NOTICE OF 48 HOURS TO THE BIOLOGIST FOR
THE ABOVE ACTIVITIES IS REQUIRED.
PLANT SUBSTITUTIONS MAY BE PERMITTED BASED ON PLANT AVAILABILITY, BUT ONLY WITH
THE APPROVAL OF THE BIOLOGIST/INSPECTOR.
ALL PLANT MATERIAL SHALL BE GUARANTEED FOR ONE FULL YEAR FROM THE DATE OF
PLANTING. ANY PLANTED MATERIAL (WOODY OR HERBACEOUS) OTHER THAN SPECIFIED OR
NOT IN VIGOROUS CONDITION WITHIN A PERIOD OF ONE YEAR FROM ACCEPTANCE OF THE
WORK SHALL BE REPLACED AT THE CONTRACTOR'S EXPENSE. AN 85% MINIMUM SURVIVAL
RATE IS EXPECTED AFTER THREE YEARS.
THE CONTRACTOR SHALL FURNISH CERTIFICATES OF INSPECTION AND COMPLIANCE TO
BIOLOGIST/INSPECTOR AS REQUIRED BY FEDERAL AND STATE LAWS AND REGULATIONS FOR
PLANTS AND FERTILIZERS.
1.4 SITE CONDITIONS / DAMAGE / CLEANUP
THE BIOLOGIST SHALL BE NOTIFIED IMMEDIATELY IF SITE CONDITIONS DIFFER FROM THOSE
SHOWN. CARE SHALL BE TAKEN TO PROTECT THE EXISTING WETLAND DURING CONSTRUCTION
ACTIVITIES. THE MITIGATION PLANTING AREAS SHALL BE CLEARLY MARKED BY CONTRACTOR
AND APPROVED BY THE BIOLOGIST PRIOR TO THE !VITIATION OF CONSTRUCTION ACTIVITIES.
ANY ITEMS NOT PART OF THIS CONTRACT, SUCH AS EXISTING BUILDINGS, EQUIPMENT,
UNDERGROUND UTILITIES, WALKS, AND/OR ROADS DAMAGED BY THE CONTRACTOR SHALL BE
REPLACED AND/OR REPAIRED AT THE CONTRACTOR'S EXPENSE, IN A MANNER SATISFACTORY
TO THE BIOLOGIST BEFORE FINAL PAYMENT WILL BE MADE.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR KEEPING PLANTED AREAS FREE OF DEBRIS.
UPON COMPLETION OF THE CONTRACT, THE CONTRACTOR SHALL REMOVE ALL SURPLUS
MATERIAL, EQUIPMENT, AND DEBRIS FROM THE SITES. ALL PLANTED AREAS SHALL BE
RAKE -CLEAN.
1.5 MAINTENANCE
A MAINTENANCE PROGRAM BY CONTRACTOR SHALL INCLUDE WEEDING, SUPPLEMENTAL
WATERING, AND OTHER ITEMS NECESSARY TO MAINTAIN PLANTED AREAS IN A HEALTHY
CONDITION AND CONTINUE FOR THE DURATION OF THE 3-YEAR LONG TERM MONITORING
PERIOD.
WEEDING SHALL BE PERFORMED ONCE PER MONTH BETWEEN MARCH 15 AND OCTOBER 15,
AND SHALL ONLY OCCUR IN CLEARED AND MULCHED AREAS MAINTAINED AROUND EACH
WOODY PLANT AND REMOVAL OF EXOTIC SPECIES SUCH AS BLACKBERRIES, SCOTS BROOM,
REED CANARYGRASS, OR OTHERS AS DETERMINED FROM THE MITIGATION AREAS.
SUPPLEMENTAL WATER FOR SHRUB PLANTINGS IN THE MITIGATION AREAS SHALL BE PROVIDED
DURING THE DRIER SUMMER MONTHS (APPROXIMATELY JUNE 1 THROUGH OCTOBER 30) AS
NECESSARY TO ENSURE SURVIVAL OF PLANT MATERIAL FOR THE FIRST YEAR AFTER
INSTALLATION. WATERING SHALL BE CONDUCTED BY A TEMPORARY IRRIGATION SYSTEM,
WATER TRUCK, OR HAND WATERING SUBJECT TO APPROVAL BY THE PROJECT BIOLOGIST OR
LANDSCAPE ARCHITECT. ALL WATERING SHALL SOAK ENTIRE ROOT ZONE WITHOUT CAUSING
SOIL EROSION. ANY EROSION SHALL BE RECTIFIED IMMEDIATELY. THE MINIMUM WATERING
REQUIREMENTS DURING THIS PERIOD SHOULD BE APPROXIMATELY 1 INCH OF WATER PER
WEEK, OR 1 TO 3 GALLONS PER WEEK FOR EACH SMALL SHRUB (1 GAL. CONTAINER) AND 3 TO 5
GALLONS PER WEEK FOR EACH TREE AND LARGE SHRUB (2-5 GAL. CONTAINER). THESE
MINIMUM REQUIREMENTS ARE GUIDELINES THAT MAY VARY DEPENDING ON PLANT LOCATION,
EXPOSURE, SOIL CONDITION, WEATHER CONDITIONS, AND PRESENCE OF EXISTING
VEGETATION. IT IS THE CONTRACTOR'S RESPONSIBILITY TO PROVIDE ADEQUATE
SUPPLEMENTAL WATER TO GUARANTEE PLANT GROWTH IN THE PLANTED AREAS DURING FIRST
YEAR AFTER PLANTING, AS REQUIRED IN THE PERFORMANCE STANDARDS.
NO SPRAYING OF HERBICIDES OR OTHER CHEMICALS, OR APPLICATION OF FERTILIZER (OTHER
THAN NOTED ON THE PLAN), SHALL OCCUR ON SITE. NO PRUNING SHALL OCCUR UNLESS
AUTHORIZED BY BIOLOGIST OR LANDSCAPE ARCHITECT. THE MAINTENANCE PERIOD SHALL
COMMENCE FOLLOWING ACCEPTANCE OF PLANTING BY BIOLOGIST/INSPECTOR.
1.6 SCHEDULE
ALL EARTHWORK SHALL OCCUR BETWEEN JULY 15 AND SEPTEMBER 30 UNLESS OTHERWISE
APPROVED BY THE PROJECT BIOLOGIST. ALL SUCH WORK IN SATURATED SOILS AT ANY TIME
OF THE YEAR OR DURING INCLEMENT WEATHER SHALL BE APPROVED BY THE BIOLOGIST PRIOR
TO EXECUTION, AND MAY REQUIRE USE OF TECHNIQUES AND EQUIPMENT DESIGNED TO
MINIMIZE IMPACTS TO SATURATED SOILS OR ADJACENT AREAS OF STANDING WATER.
PLANTING OF WOODY MATERIAL SHALL OCCUR BETWEEN OCTOBER 1 AND MARCH 1 TO TAKE
ADVANTAGE OF SEASONAL RAINS AND GREATER AVAILABILITY OF PLANT MATERIAL. PLANTING
DURING ABNORMALLY HOT, DRY, OR FREEZING WEATHER, OR AT TIMES OTHER THAN AS
NOTED, SHALL BE AUTHORIZED BY BIOLOGIST AND MAY REQUIRE PLANT SUBSTITUTIONS AND
SUPPLEMENTAL IRRIGATION. SPOT SEEDING SHALL OCCUR IMMEDIATELY FOLLOWING
EARTHWORK. IF SEEDING OCCURS BETWEEN OCTOBER 1 AND MARCH 31, STRAW MULCHING
SHALL BE REQUIRED IMMEDIATELY AFTER SEED APPLICATION.
1.7 EXISTING VEGETATION
ALL EXISTING VEGETATION OUTSIDE LIMITS OF PLANTING SHALL BE PROTECTED UNLESS
SPECIFIED. ANY EXISTING VEGETATION DAMAGED BY CONTRACTOR SHALL BE REPLACED WITH
PLANTS OF EQUAL OR BETTER SIZE AND CONDITION AT CONTRACTOR'S EXPENSE.
2.0 PRODUCTS
2.1 TOPSOIL
UTILIZE ON -SITE SALVAGED TOPSOIL AS APPROVED BY THE PROJECT BIOLOGIST OR
LANDSCAPE ARCHITECT. IF UNAVAILABLE OR OF INSUFFICIENT QUANTITIES, APPROVED
IMPORTED TOPSOIL SHALL BE USED. TOPSOIL SHALL BE NATURAL, FRIABLE, FERTILE SOIL
CHARACTERISTIC OF PRODUCTIVE SOIL IN THE VICINITY, FREE OF STONES, CLAY LUMPS,
ROOTS, AND OTHER FOREIGN MATTER. CONTRACTOR TO SUBMIT 0.25 CUBIC FOOT BAG OF
IMPORTED TOPSOIL TO PROJECT BIOLOGIST OR LANDSCAPE ARCHITECT FOR APPROVAL.
TOPSOIL APPROVAL MUST BE GRANTED BEFORE ON -SITE DELIVERY.
2.2 SOIL AMENDMENT
A WELL -DECOMPOSED, HUMUS -LIKE MATERIAL DERIVED FROM THE DECOMPOSITION OF GRASS
CLIPPINGS, LEAVES, BRANCHES, WOOD, AND OTHER ORGANIC MATERIALS. COMPOST SHALL
BE PRODUCED AT A PERMITTED SOLID WASTE COMPOSTING FACILITY (HEALTH PERMIT, DOE
STORMWATER PERMIT, PSAPCA FACILITY, AND EQUIPMENT REGISTRATION). PROJECT
BIOLOGIST OR LANDSCAPE ARCHITECT WILL DETERMINE IF SOIL AMENDMENT IS NECESSARY
ONCE THE EARTHWORK AS BEGUN.
2.3 PLANT MATERIALS
NO PLANT MATERIAL MAY BE TRANSPLANTED FROM OTHER PROTECTED WETLANDS UNLESS
APPROVED BY THE BIOLOGIST OR LANDSCAPE ARCHITECT. ALL PLANT MATERIAL SHALL BE
LOCALLY GROWN AND BE OF ACCEPTED SIZE STANDARDS AS SPECIFIED IN "AMERICAN
STANDARD FOR NURSERY STOCK - 2004" PUBLISHED BY THE AMERICAN ASSOCIATION OF
NURSERYMEN (ANSI Z60.1-2004V). ROOTED PLANTS SHALL BE FIRST QUALITY, WELL -FOLIATED,
WITH WELL -DEVELOPED ROOT SYSTEMS, AND NORMAL WELL -SHAPED TRUNKS, LIMBS, STEMS,
AND HEADS. THE BIOLOGIST/INSPECTOR SHALL INSPECT FOR QUALITY CONFORMANCE. ALL
ROOTED PLANT MATERIAL SHALL BE LABELED BY GENUS, SPECIES AND VARIETY. PLANTS
DEEMED UNSUITABLE SHALL BE REJECTED BEFORE OR AFTER DELIVERY. ALL PLANT MATERIAL
SHALL BE FREE FROM DAMAGE, DISEASE, INSECTS, INSECT EGGS AND LARVAE.
2.4 MULCH
MULCH AROUND INDIVIDUAL WOODY PLANTINGS SHALL CONSIST OF GROUND FIR OR HEMLOCK
BARK OF UNIFORM COLOR, FREE FROM WEED, SEEDS, SAWDUST, AND SPLINTERS AND SHALL
NOT CONTAIN SALTS, OR OTHER COMPONENTS DETRIMENTAL TO PLANT LIFE. SIZE RANGE OF
MULCH SHALL BE FROM 1/2" TO 1-1/4" WITH MAXIMUM OF 20% PASSING A 1/2" SCREEN.
3.0 EXECUTION
3.1 CLEARING AND GRADING
WALK MITIGATION SITE WITH THE PROJECT BIOLOGIST OR LANDSCAPE ARCHITECT TO IDENTIFY
LIMITS OF CLEARING. CLEAR AND GRADE DESIGNATED AREAS FOLLOWING SILT FENCE
PLACEMENT. GRADE SITE AS SPECIFIED IN ENGINEERING PLANS FOR SEWER LINE, WITH THE
TOP 12 INCHES (MINIMUM) OF BACK FILL OR FILL FOR PIPE COVER TO CONSIST OF TOPSOIL
SUITABLE FOR PLANTINGS, AND TRACK COMPACT.
3.2 PLANT INSTALLATION
PLANTING SHALL OCCUR ACCORDING TO PREVIOUSLY DEFINED SCHEDULE. PLANTS SHALL BE
INSTALLED IN COMPLIANCE WITH DETAILS IN THE PLANS. DIG PITS FOR TREES, SHRUBS, AND
GROUNDCOVER 2 TIMES AS WIDE AND 1.5 TIMES AS DEEP AS THE DIMENSIONS OF THE
CONTAINER OR NATURAL ROOT SPREAD, AND CONSISTENT WITH GOOD HORTICULTURAL
PRACTICE. SEE DETAIL 1, SHEET BR-2. IF CONTAINER STOCK APPEARS TO BE ROOTBOUND,
SLASH ROOTS VERTICALLY WITH A SHARP KNIFE ALONG OUTSIDE OF BALL IN THREE (3) PLACES
MINIMUM BEFORE PLANTING. SOAK DRIED ROOTBALLS IMMEDIATELY AFTER PLANTING.
CLEANLY PRUNE BROKEN ROOTS ONE-HALF INCH OR GREATER IN DIAMETER.
BACKFILL SHALL CONSIST OF 50/50 TOPSOIUSUBSOIL MIX. PLANTS SHALL BE INSTALLED SO
FINISH GRADE IS LEVEL WITH TOP OF ROOT BALL AND IS AT THE SAME ELEVATION WITH
RESPECT TO GRADE AS THE PLANT WAS GROWN IN NURSERY. PLANTS SHALL BE BACKFILLED
AND WATER -SETTLED IF SOIL IS DRY. NO COMPACTION OF BACKFILL IS TO OCCUR AROUND
PLANT. ALL PLANTS SHALL BE WATERED THOROUGHLY AT TIME OF INSTALLATION.
PLANTING LOCATIONS INDICATED ON THE PLAN ARE BASED ON ANTICIPATED SITE CONDITIONS.
NO TREE OR SHRUB SPECIES SHALL BE PLANTED IN STANDING WATER.
3.3 MULCHING
IMMEDIATELY AFTER COMPLETION OF ALL PLANTING, MULCH SHALL BE PLACED AROUND
WOODY PLANTINGS THROUGHOUT PLANTING AREA TO A MINIMUM DEPTH OF 2 INCHES.
4.0 AS -BUILT DRAWINGS
FOLLOWING COMPLETION, AND APPROVAL OF PLANTINGS BY THE BIOLOGIST, CONTRACTOR
SHALL PROVIDE AS -BUILT DRAWINGS TO THE BIOLOGIST. DRAWINGS ARE TO COMPLY WITH
REQUIREMENTS FOR SUBMISSION OF AS -BUILT DRAWINGS IN ACCORDANCE WITH SNOHOMISH
COUNTY RECORD CONSTRUCTION DOCUMENT PACKAGE AND SHALL ADEQUATELY DESCRIBE
THE CHANGES WITH NOTES, SYMBOLS, AND DIMENSIONS. BIOLOGIST WILL SUBMIT AS -BUILT
DRAWINGS TO SNOHOMISH COUNTY. THE CITY OF RENTON INSPECTOR MAY VISIT THE SITE TO
REVIEW PLANTINGS, GRADES, AND HABITAT FEATURES.
5.0 PROJECT ACCEPTANCE
AFTER COMPLETION OF THE MONITORING PERIOD, CITY OF RENTON SHALL PROVIDE WRITTEN
ACCEPTANCE AND APPROVAL OF THE MITIGATION SITE PROVIDED THAT THE PERFORMANCE
STANDARDS HAVE BEEN MET AS DOCUMENTED BY MONITORING.
6.0 PLANT ACCEPTANCE AND GUARANTEE PERIOD
FOLLOWING COMPLETION OF PLANTING, BUT PRIOR TO FINAL APPROVAL BY THE BIOLOGIST, A
PROVISIONAL PRE -WARRANTY ACCEPTANCE OF THE PLANTS WILL BE GRANTED. FROM THIS
DATE FORWARD, FOR A PERIOD OF ONE YEAR, THE LANDSCAPE PLANTING WARRANTY SHALL
BE IN EFFECT. A 100% SURVIVORSHIP OF NEWLY INSTALLED PLANT MATERIAL IS REQUIRED
UNDER THIS GUARANTEE. IF MORTALITY EXISTS DURING THIS PERIOD, THE BIOLOGIST OR
LANDSCAPE ARCHITECT WILL SPECIFY WHICH PLANTS WILL BE REPLACED TO ACHIEVE 100%
SURVIVAL RATE. SPECIFIED PLANTS SHALL BE REPLACED WITH PLANTS OF SPECIES, SIZES,
AND CONDITIONS SHOWN ON THE DRAWINGS UNLESS DIRECTED OTHERWISE BY BIOLOGIST IN
WRITING. ALL MAINTENANCE OF PLANTED AREAS DURING THE GUARANTEE PERIOD SHALL BE
BY THE CONTRACTOR AND SHALL INCLUDE ITEMS AS INDICATED TO FULLY ESTABLISH ALL
PLANTED AREAS TO A HEALTHY, VIGOROUS STATE.
THREE YEARS AFTER THE END OF THE GUARANTEE PERIOD, A FINAL INSPECTION OF THE
WORK WILL BE COMPLETED BY THE PROJECT BIOLOGIST OR LANDSCAPE ARCHITECT. PLANTS
INSTALLED UNDER THIS CONTRACT THAT ARE DEAD OR IN OTHERWISE UNSATISFACTORY
CONDITIONS AND BELOW THE 85% SURVIVAL RATE SHALL BE REMOVED FROM THE SITE AND
REPLACED AS DIRECTED BY THE BIOLOGIST. UPON COMPLETION OF THESE REQUIREMENTS,
FINAL PLANT ACCEPTANCE WILL BE CERTIFIED IN WRITING BY BIOLOGIST OR LANDSCAPE
ARCHITECT.
7.0 MONITORING PROGRAM
BECAUSE OF THE VARIABLE SUCCESS OF MITIGATION PROJECTS IN THE PACIFIC NORTHWEST,
THIS PLAN INCLUDES A SYSTEMATIC MONITORING PROGRAM OF THE RESTORED BUFFER
AREAS TO EVALUATE THE SUCCESS OF THE EFFORT. THE RESULTS OF THE MONITORING WILL
BE USED TO DEVELOP ANY NEEDED MODIFICATIONS AND/OR ALTERATIONS OF THE SITE IN
SUBSEQUENT YEARS.
THE PURPOSES OF THE MONITORING PROGRAM ARE: (1) TO DOCUMENT PHYSICAL AND
BIOLOGICAL CHARACTERISTICS OF THE RESTORED BUFFER, AND (2) TO ENSURE THAT THE
GOALS AND OBJECTIVES COMPLY WITH PERMIT SPECIFICATIONS (JOSSELYN ET AL. 1990;
WASHINGTON STATE DEPARTMENT OF ECOLOGY 2002).
THE MONITORING PROCESS WOULD CONSIST OF THREE DISTINCT PHASES: (1) INSTALLATION
MONITORING; (2) COMPLIANCE MONITORING; AND (3) LONG-TERM MONITORING. THE
"TIME -ZERO" OR BASELINE COMPOSITION, STRUCTURE, AND COVER ABUNDANCE WOULD BE
DOCUMENTED DURING THE COMPLIANCE MONITORING PHASE. THE LONG-TERM MONITORING
PROGRAM WOULD DOCUMENT THE SURVIVAL OF PLANTED VEGETATION AND RATES OF
COLONIZATION BY OTHER PLANTS (I.E., IN PLANTED AREAS) OVER A THREE-YEAR PERIOD
AFTER RESTORATION ACTIVITIES HAD BEEN COMPLETED.
THE FOLLOWING SECTIONS DESCRIBE THE ELEMENTS OF AN EFFECTIVE MONITORING
PROGRAM.
7.1 INSTALLATION MONITORING
COORDINATION AND COMMUNICATION BEWTEEN APPROPRIATE PARTIES BEFORE AND DURING
CONSTRUCTION AND PLANT INSTALLATION RESULTS IN A MORE SUCCESSFUL RESTORATION
PROJECT. COORDINATION MEETINGS WOULD INCLUDE THE BIOLOGIST, LANDSCAPE
ARCHITECT, PROJECT ENGINEERS, CITY OF RENTON REPRESENTATIVES, AND CONTRACTORS.
WE RECOMMEND A PRE -CONSTRUCTION MEETING OF THE PERSONNEL RESPONSIBLE FOR THE
DESIGN AND THOSE RESPONSIBLE FOR IMPLEMENTATION OF THE BUFFER PLANTINGS. THE
PURPOSE OF THE MEETING WOULD BE TO REVIEW THE INTENT OF THE MITIGATION PLAN,
ESTABLISH A PATHWAY OF COMMUNICATION DURING CONSTRUCTION, AGREE UPON THE
CONSTRUCTION SEQUENCE AND ADDRESS AND RESOLVE ANY QUESTIONS.
THE LANDSCAPE ARCHITECT OR PROJECT BIOLOGIST SHOULD BE PRESENT ON -SITE DURING
THE VARIOUS STAGES OF MITIGATION. THEIR DUTIES WOULD BE TO: (1) INSPECT THE PLANT
MATERIALS AND RECOMMEND THEIR FINAL PLACEMENT BEFORE PLANTING; (2) DETERMINE THE
CORRECT TYPE AND APPLICATION RATE OF AMENDMENTS TO THE SOIL, IF NEEDED; (3) MAKE
ADJUSTMENTS IN PLANTING PLANS, AS NEEDED, IN RESPONSE TO FIELD CONDITIONS; (4)
ENSURE THAT CONSTRUCTION ACTIVITIES ARE CONDUCTED PER THE APPROVED PLAN; AND (5)
RESOLVE PROBLEMS THAT ARISE DURING IMPLEMENTATION, THUS LESSENING PROBLEMS
THAT MIGHT OCCUR LATER DURING THE LONG-TERM MONITORING PHASE.
7.2 COMPLIANCE MONITORING
COMPLIANCE MONITORING CONSISTS OF EVALUATING THE WETLAND IMMEDIATELY AFTER
MITIGATION IS COMPLETED. THE OBJECTIVES WOULD BE TO CERTIFY THAT ALL DESIGN
FEATURES, AS AGREED TO IN THE PLANTING PLAN, HAVE BEEN CORRECTLY AND FULLY
IMPLEMENTED, AND THAT ANY CHANGES MADE IN THE FIELD ARE CONSISTENT WITH THE
INTENT OF THE DESIGN. EVALUATION OF THE PLANTING AREAS AFTER IMPLEMENTATION
WOULD BE DONE BY THE LANDSCAPE ARCHITECT AND PROJECT BIOLOGIST USING EVALUATION
STANDARDS AND CRITERIA DISCUSSED IN SECTION 6.0.
THE COMPLIANCE MONITORING PHASE WOULD CONCLUDE WITH THE PREPARATION OF A BRIEF
COMPLIANCE REPORT FROM THE PROJECT BIOLOGIST. THE REPORT WOULD VERIFY THAT ALL
DESIGN FEATURES HAVE BEEN CORRECTLY, FULLY, AND SUCCESSFULLY INCORPORATED.
7.3 LONG-TERM MONITORING
LONG-TERM MONITORING WOULD BEGIN ONLY AFTER ACCEPTANCE OF THE COMPLIANCE
REPORT AND ACKNOWLEDGMENT THAT THE CONSTRUCTION IS COMPLETE BY THE CITY OF
RENTON. LONG-TERM MONITORING WOULD BE CONDUCTED FOR A MINIMUM OF THREE
GROWING SEASONS. MONITORING WOULD EVALUATE THE ESTABLISHMENT AND MAINTENANCE
OF THE PLANT COMMUNITIES IN THE BUFFER AREAS TO DETERMINE IF THE GOALS AND
OBJECTIVES OF THE MITIGATION PLAN HAVE BEEN MET. AFTER PLANTING OF THE BUFFER
AREAS IS COMPLETED, FIXED SAMPLING STATIONS WOULD BE ESTABLISHED DURING
COMPLIANCE MONITORING WITHIN AREAS REPRESENTATIVE OF THE PLANT COMMUNITIES
BEING SAMPLED. THE SAME POINTS WOULD BE MONITORED EACH MONITORING SESSION.
THESE POINTS MAY BE LOCATED RANDOMLY OR ALONG SPECIFIC TRANSECTS, DEPENDING
UPON SITE CONDITIONS.
AT EACH POINT, FIXED-POINT PHOTOS WOULD BE TAKEN DURING EACH MONITORING VISIT TO
PROVIDE PHYSICAL DOCUMENTATION OF THE CONDITION OF THE RESTORED AREAS.
PHOTOGRAPHS WOULD BE TAKEN FROM ALL LOCATIONS ESTABLISHED DURING THE FIRST
MONITORING SITE VISIT (COMPLIANCE) AND THEREAFTER EACH VISIT OF THE MONITORING
PERIOD FROM THE ESTABLISHED LOCATION POINTS.
AT EACH SAMPLE STATION, PLANT SPECIES WOULD BE IDENTIFIED AND AN ESTIMATE OF
COVER AND ABUNDANCE MADE, BASED ON THE BRAUN-BLANQUET METHODS
(MUELLER-DOMBOIS AND ELLENBERG 1974). PLANT IDENTIFICATIONS WOULD BE MADE
ACCORDING TO STANDARD TAXONOMIC PROCEDURES AS DESCRIBED IN HITCHCOCK AND
CRONQUIST (1976), WITH NOMENCLATURE UPDATED BY USDA NATURAL RESOURCES
CONSERVATION SERVICE PLANT DATABASE (2010). THE PLANTINGS WOULD BE EXAMINED TO
DOCUMENT THE SURVIVAL RATE OF SPECIES PLANTED; SIGNS OF STRESS, DAMAGE, OR
DISEASE; AS WELL AS SIGNS OF VIGOR AND RATES OF COLONIZATION BY DESIRABLE
VOLUNTEER PLANTS. ALSO PRESENCE AND COVERAGE OF INVASIVE PLANTS WILL BE
DOCUMENTED.
7.4 MONITORING AND REPORTING SCHEDULE
MONITORING WOULD BE CONDUCTED ANNUALLY DURING THE THREE-YEAR PERIOD.
MONITORING REPORTS WOULD BE PREPARED FOR SUBMITTAL TO THE CITY OF RENTON AT THE
END OF EACH YEAR. THE MONITORING REPORT WOULD DOCUMENT THE CHANGES OCCURRING
WITHIN THE RESTORATION AREA AND MAKE RECOMMENDATIONS FOR IMPROVING THE DEGREE
OF SUCCESS OR CORRECTING ANY PROBLEMS NOTED DURING MONITORING. MONITORING
REPORTS WOULD DOCUMENT HOW THE MITIGATION IS PROGRESSING TOWARD MEETING THE
GOALS, OBJECTIVES AND PERFORMANCE STANDARDS OF THE PLAN.
8.0 PERFORMANCE STANDARDS
THE OVERALL EVALUATION CRITERIA FOR THE BUFFER RESTORATION AREA WOULD BE
ESTABLISHMENT OF DESIRABLE PLANT COMMUNITIES.
YEAR ONE: EVIDENCE THAT THE DESIRED PLANT COMMUNITIES ARE DEVELOPING WITH 100%
SURVIVAL OF THE PLANTED SHRUB SPECIES. AT THE END OF THE FIRST GROWING
SEASON AFTER INSTALLATION IS COMPLETE, THE PLANTINGS SHOULD DEMONSTRATE
GOOD HEALTH AND VIGOR, AND PLANT COVERAGE IN ALL AREAS SHOULD BE
SUFFICIENT TO CONTROL EROSION. ANY PLANT MATERIAL THAT HAS NOT SURVIVED
THE FIRST YEAR BECAUSE OF TRANSPLANT SHOCK SHOULD BE NOTED AND REPLACED
AT THIS TIME. IF PLANT MORTALITY IS A RESULT OF SITE CONDITIONS, APPROPRIATE
MEASURES SHOULD BE TAKEN TO ENSURE PLANT SURVIVAL.
YEARS TWO AND THREE: EVIDENCE THAT THE DESIRED PLANT COMMUNITIES CONTINUE TO
DEVELOP AND EVIDENCE OF REPRODUCTION OR NEW SPROUTING BY THE PLANTINGS
WITH AT LEAST 85% SURVIVAL OF THE PLANTINGS.
SPECIFIC PERFORMANCE STANDARDS TO BE USED IN THE LONG-TERM MONITORING ARE THE
FOLLOWING:
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• 100% SURVIVAL OF ALL PLANTED SHRUBS IN THE BUFFER FOR ONE YEAR AFTER
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PLANTING AND AT LEAST 85% SURVIVAL AFTER THREE YEARS.
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CONTINGENCY PLANS ARE NEEDED IF MONITORING SHOWS THAT OBJECTIVES AND
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RECOMMENDATIONS FOR IDENTIFIED PROBLEMS SHOULD BE MADE BY THE PROJECT
BIOLOGIST IN CONSULTATION WITH THE PROJECT MANGERS AND CIVIL ENGINERS. WITH EARLY
IDENTIFICATION, PLANT REPLACEMENT OR OTHER MAINTENANCE CAN BE ACCOMPLISHED
PRIOR TO THE FOLLOW-UP MONITORING SITE VISIT, AND DEVELOPMENT OF THE RESTORATION
SITE CAN BE BETTER ASSURED.
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MAY 19 -iII�U
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REGISTERED
LANDSCAPE ARCHITECT SHEET
DUANE DIETZ
CERTIFICATE NO. 649
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RAEDEKE ASSOCIATES, INC.
5711 NORTHEAST 63RD ST. SEATTLE, WA 98115
(206) 525-8122 FAX: (206) 526-28W
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