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HomeMy WebLinkAboutR-414038O O LLJ LLJ 0 U) W Q LLI LU N 0 ry LU z LU CM I LU LU U) PLANT INSTALLATION SPECIFICATIONS GENERAL NOTES QUALITY ASSURANCE 1. PLANTS SHALL MEET OR EXCEED THE SPECIFICATIONS OF FEDERAL, STATE, AND LOCAL LAWS REQUIRING INSPECTION FOR PLANT DISEASE AND INSECT CONTROL. 2. PLANTS SHALL BE HEALTHY, VIGOROUS, AND WELL -FORMED, WITH WELL DEVELOPED, FIBROUS ROOT SYSTEMS, FREE FROM DEAD BRANCHES OR ROOTS. PLANTS SHALL BE FREE FROM DAMAGE CAUSED BY TEMPERATURE EXTREMES, LACK OR EXCESS OF MOISTURE, INSECTS, DISEASE, AND MECHANICAL INJURY. PLANTS IN LEAF SHALL BE WELL FOLIATED AND OF GOOD COLOR. PLANTS SHALL BE HABITUATED TO THE OUTDOOR ENVIRONMENTAL CONDITIONS INTO WHICH THEY WILL BE PLANTED (HARDENED -OFF). 3. TREES WITH DAMAGED, CROOKED, MULTIPLE OR BROKEN LEADERS WILL BE REJECTED. WOODY PLANTS WITH ABRASIONS OF THE BARK OR SUN SCALD WILL BE REJECTED. 4. NOMENCLATURE: PLANT NAMES SHALL CONFORM TO FLORA OF THE PACIFIC NORTHWEST BY HITCHCOCK AND CRONQUIST, UNIVERSITY OF WASHINGTON PRESS, 1973 AND/OR TO A FIELD GUIDE TO THE COMMON WETLAND PLANTS OF WESTERN WASHINGTON & NORTHWESTERN OREGON, ED. SARAH SPEAR COOKE, SEATTLE AUDUBON SOCIETY, 1997. DEFINITIONS 1. PLANTS/PLANT MATERIALS. PLANTS AND PLANT MATERIALS SHALL INCLUDE ANY LIVE PLANT MATERIAL USED ON THE PROJECT. THIS INCLUDES BUT IS NOT LIMITED TO CONTAINER GROWN, B&B OR BAREROOT PLANTS; LIVE STAKES AND FASCINES (WATTLES); TUBERS, CORMS, BULBS, ETC..; SPRIGS, PLUGS, AND LINERS. 2. CONTAINER GROWN. CONTAINER GROWN PLANTS ARE THOSE WHOSE ROOTBALLS ARE ENCLOSED IN A POT OR BAG IN WHICH THAT PLANT GREW. SUBSTITUTIONS 1. IT IS THE CONTRACTOR'S RESPONSIBILITY TO OBTAIN SPECIFIED MATERIALS IN ADVANCE IF SPECIAL GROWING, MARKETING OR OTHER ARRANGEMENTS MUST BE MADE IN ORDER TO SUPPLY SPECIFIED MATERIALS. 2. SUBSTITUTION OF PLANT MATERIALS NOT ON THE PROJECT LIST WILL NOT BE PERMITTED UNLESS AUTHORIZED IN WRITING BY THE RESTORATION CONSULTANT. 3. IF PROOF IS SUBMITTED THAT ANY PLANT MATERIAL SPECIFIED IS NOT OBTAINABLE, A PROPOSAL WILL BE CONSIDERED FOR USE OF THE NEAREST EQUIVALENT SIZE OR ALTERNATIVE SPECIES, WITH CORRESPONDING ADJUSTMENT OF CONTRACT PRICE. 4. SUCH PROOF WILL BE SUBSTANTIATED AND SUBMITTED IN WRITING TO THE CONSULTANT AT LEAST 30 DAYS PRIOR TO START OF WORK UNDER THIS SECTION. INSPECTION 1. PLANTS SHALL BE SUBJECT TO INSPECTION AND APPROVAL BY THE RESTORATION CONSULTANT FOR CONFORMANCE TO SPECIFICATIONS, EITHER AT TIME OF DELIVERY ON -SITE OR AT THE GROWER'S NURSERY. APPROVAL OF PLANT MATERIALS AT ANY TIME SHALL NOT IMPAIR THE SUBSEQUENT RIGHT OF INSPECTION AND REJECTION DURING PROGRESS OF THE WORK. 2. PLANTS INSPECTED ON SITE AND REJECTED FOR NOT MEETING SPECIFICATIONS MUST BE REMOVED IMMEDIATELY FROM SITE OR RED -TAGGED AND REMOVED AS SOON AS POSSIBLE. 3. THE RESTORATION CONSULTANT MAY ELECT TO INSPECT PLANT MATERIALS AT THE PLACE OF GROWTH. AFTER INSPECTION AND ACCEPTANCE, THE RESTORATION CONSULTANT MAY REQUIRE THE INSPECTED PLANTS BE LABELED AND RESERVED FOR PROJECT. SUBSTITUTION OF THESE PLANTS WITH OTHER INDIVIDUALS, EVEN OF THE SAME SPECIES AND SIZE, IS UNACCEPTABLE. MEASUREMENT OF PLANTS 1. PLANTS SHALL CONFORM TO SIZES SPECIFIED UNLESS SUBSTITUTIONS ARE MADE AS OUTLINED IN THIS CONTRACT. 2. HEIGHT AND SPREAD DIMENSIONS SPECIFIED REFER TO MAIN BODY OF PLANT AND NOT BRANCH OR ROOT TIP TO TIP. PLANT DIMENSIONS SHALL BE MEASURED WHEN THEIR BRANCHES OR ROOTS ARE IN THEIR NORMAL POSITION. 3. WHERE A RANGE OF SIZE IS GIVEN, NO PLANT SHALL BE LESS THAN THE MINIMUM SIZE AND AT LEAST 50% OF THE PLANTS SHALL BE AS LARGE AS THE MEDIAN OF THE SIZE RANGE. (EXAMPLE: IF THE SIZE RANGE IS 12" TO 18", AT LEAST 50% OF PLANTS MUST BE 15" TALL.). SUBMITTALS PROPOSED PLANT SOURCES 1. WITHIN 45 DAYS AFTER AWARD OF THE CONTRACT, SUBMIT A COMPLETE LIST OF PLANT MATERIALS PROPOSED TO BE PROVIDED DEMONSTRATING CONFORMANCE WITH THE REQUIREMENTS SPECIFIED. INCLUDE THE NAMES AND ADDRESSES OF ALL GROWERS AND NURSERIES. PRODUCT CERTIFICATES 1. PLANT MATERIALS LIST - SUBMIT DOCUMENTATION TO CONSULTANT AT LEAST 30 DAYS PRIOR TO START OF WORK UNDER THIS SECTION THAT PLANT MATERIALS HAVE BEEN ORDERED. ARRANGE PROCEDURE FOR INSPECTION OF PLANT MATERIAL WITH CONSULTANT AT TIME OF SUBMISSION. 2. HAVE COPIES OF VENDOR'S OR GROWERS' INVOICES OR PACKING SLIPS FOR ALL PLANTS ON SITE DURING INSTALLATION. INVOICE OR PACKING SLIP SHOULD LIST SPECIES BY SCIENTIFIC NAME, QUANTITY, AND DATE DELIVERED (AND GENETIC ORIGIN IF THAT INFORMATION WAS PREVIOUSLY REQUESTED). DELIVERY, HANDLING, & STORAGE NOTIFICATION CONTRACTOR MUST NOTIFY CONSULTANT 48 HOURS OR MORE IN ADVANCE OF DELIVERIES SO THAT CONSULTANT MAY ARRANGE FOR INSPECTION. PLANT MATERIALS 1. TRANSPORTATION - DURING SHIPPING, PLANTS SHALL BE PACKED TO PROVIDE PROTECTION AGAINST CLIMATE EXTREMES, BREAKAGE AND DRYING. PROPER VENTILATION AND PREVENTION OF DAMAGE TO BARK, BRANCHES, AND ROOT SYSTEMS MUST BE ENSURED. 2. SCHEDULING AND STORAGE - PLANTS SHALL BE DELIVERED AS CLOSE TO PLANTING AS POSSIBLE. PLANTS IN STORAGE MUST BE PROTECTED AGAINST ANY CONDITION THAT IS DETRIMENTAL TO THEIR CONTINUED HEALTH AND VIGOR. 3. HANDLING - PLANT MATERIALS SHALL NOT BE HANDLED BY THE TRUNK, LIMBS, OR FOLIAGE BUT ONLY BY THE CONTAINER, BALL, BOX, OR OTHER PROTECTIVE STRUCTURE, EXCEPT BAREROOT PLANTS SHALL BE KEPT IN BUNDLES UNTIL PLANTING AND THEN HANDLED CAREFULLY BY THE TRUNK OR STEM. 4. LABELS - PLANTS SHALL HAVE DURABLE, LEGIBLE LABELS STATING CORRECT SCIENTIFIC NAME AND SIZE. TEN PERCENT OF CONTAINER GROWN PLANTS IN INDIVIDUAL POTS SHALL BE LABELED. PLANTS SUPPLIED IN FLATS, RACKS, BOXES, BAGS, OR BUNDLES SHALL HAVE ONE LABEL PER GROUP. WARRANTY PLANT WARRANTY PLANTS MUST BE GUARANTEED TO BE TRUE TO SCIENTIFIC NAME AND SPECIFIED SIZE, AND TO BE HEALTHY AND CAPABLE OF VIGOROUS GROWTH. REPLACEMENT 1. PLANTS NOT FOUND MEETING ALL OF THE REQUIRED CONDITIONS AT THE CONSULTANT'S DISCRETION MUST BE REMOVED FROM SITE AND REPLACED IMMEDIATELY AT THE CONTRACTOR'S EXPENSE. 2. PLANTS NOT SURVIVING AFTER ONE YEAR TO BE REPLACED AT THE CONTRACTOR'S EXPENSE. PLANT MATERIAL GENERAL 1. PLANTS SHALL BE NURSERY GROWN IN ACCORDANCE WITH GOOD HORTICULTURAL PRACTICES UNDER CLIMATIC CONDITIONS SIMILAR TO OR MORE SEVERE THAN THOSE OF THE PROJECT SITE. 2. PLANTS SHALL BE TRUE TO SPECIES AND VARIETY OR SUBSPECIES. NO CULTIVARS OR NAMED VARIETIES SHALL BE USED UNLESS SPECIFIED AS SUCH. QUANTITIES SEE PLANT LIST ON ACCOMPANYING PLANS AND PLANT SCHEDULES. ROOT TREATMENT 1. CONTAINER GROWN PLANTS (INCLUDES PLUGS): PLANT ROOT BALLS MUST HOLD TOGETHER WHEN THE PLANT IS REMOVED FROM THE POT, EXCEPT THAT A SMALL AMOUNT OF LOOSE SOIL MAY BE ON THE TOP OF THE ROOTBALL. 2. PLANTS MUST NOT BE ROOT -BOUND; THERE MUST BE NO CIRCLING ROOTS PRESENT IN ANY PLANT INSPECTED. 3. ROOTBALLS THAT HAVE CRACKED OR BROKEN WHEN REMOVED FROM THE CONTAINER SHALL BE REJECTED. PLANTING & MITIGATION NOTES SCALE: NTS MITIGATION NOTES TALBOT MITIGATION PLAN PSE ENERGIZE EASTSIDE 230 - RENTON EXECUTIVE SUMMARY PSE'S ENERGIZE EASTSIDE PROJECT (THE PROJECT) PROPOSES TO UPGRADE EXISTING TRANSMISSION LINES IN RENTON IN ORDER TO INCREASE TRANSMISSION SYSTEM CAPACITY TO 230KV POWER. PROJECT ELEMENTS, EXISTING CONDITIONS, MITIGATION SEQUENCING, AND PROJECT IMPACTS TO CRITICAL AREAS ARE DISCUSSED IN THE CITY OF RENTON CRITICAL AREAS REPORT (RENTON CAR) PREPARED BY THE WATERSHED COMPANY, JANUARY 2019. THIS MITIGATION PLAN IS INTENDED TO REPRESENT THE MITIGATION PLAN REFERENCED IN THE RENTON CAR. IT HAS BEEN DESIGNED TO APPROPRIATELY MITIGATE FOR PROJECT IMPACTS OCCURRING IN WETLAND AND STREAM CRITICAL AREA BUFFERS AS DESCRIBED IN THE RENTON CAR AND REQUIRED BY THE RENTON MUNICIPAL CODE (RMC). PROPOSED PROJECT ACTIVITIES IMPACT WETLAND AND STREAM BUFFERS IN THREE POSSIBLE WAYS: PERMANENT IMPACTS RESULTING IN A CONVERSION TO A DEVELOPED CONDITION AS A RESULT OF POLE FOOTPRINTS, VEGETATION CONVERSION FROM A FORESTED VEGETATION TYPE TO A SHRUB OR HERBACEOUS COMMUNITY DUE TO VEGETATION MANAGEMENT REQUIREMENTS (CONVERSION), AND/OR TEMPORARY IMPACTS ASSOCIATED WITH CONSTRUCTION ACTIVITIES (TEMPORARY). TEMPORARY IMPACTS WILL BE RESTORED IN PLACE AFTER CONSTRUCTION WORK IS COMPLETE. CONVERSION AND PERMANENT BUFFER IMPACTS REQUIRE MITIGATION WHICH IS PRESENTED HEREIN. THE PROJECT HAS AVOIDED ALL DIRECT PERMANENT IMPACTS (FILL) TO WETLANDS, STREAMS AND STREAM BUFFERS. ONE NEW POLE WILL BE INSTALLED WITHIN A WETLAND BUFFER AND THREE REPLACEMENT POLES WILL BE INSTALLED IN THE SAME LOCATION AS EXISTING POLES WITHIN A WETLAND BUFFER, BUT WITH A LARGER FOOTPRINT. TWO EXISTING TRANSMISSION POLES WILL BE REMOVED FROM WETLAND BUFFER, RESULTING IN AN OVERALL NET INCREASE OF ONLY 68 SF OF FILL MATERIAL IN BUFFER AREAS. VEGETATION CONVERSION (TREE REMOVAL) IMPACTS OCCUR IN THE BUFFER AREA OF THREE WETLAND AND THREE STREAM FEATURES AND ARE NECESSARY TO ACCOMMODATE THE NEW 230KV TRANSMISSION LINE DESIGN AND MEET FEDERAL SAFETY STANDARDS. MITIGATION FOR IMPACTS IS PLANNED IN THE BUFFER OF WETLAND NRO1 IN THE LOWER CEDAR RIVER SUB -BASIN (TALBOT SITE). AS DISCUSSED IN THE RENTON CAR, THIS LOCATION WAS SELECTED FOR MITIGATION ACTIVITIES BASED UPON THE LOCATION OF PROJECT IMPACTS, OPPORTUNITY PRESENT, PROPERTY OWNERSHIP, PROXIMITY TO OTHER REGULATED CRITICAL AREAS, AND THE VALUE OF THE ENHANCMENT TO OVERALL CRITICAL AREA FUNCTION IN THE CORRIDOR. ADDITIONALLY, SNAG CREATION IS PROPOSED IN THE BUFFER OF HONEY DEW CREEK TO MITIGATE FOR SOME IMPACTS TO HABITAT OCCURING WITHIN THE MAY CREEK SUB -BASIN. THE MINIMUM MITIGATION AREA REQUIRED, AS PRESENTED IN THE RENTON CAR IS 9,461 SF. THIS WAS CALCULATED BASED ON A PERMANENT IMPACT MITIGATION RATIO OF 1:1 AND A VEGETATION CONVERSION MITIGATION RATIO OF 0.5:1 BASED ON ECOLOGY GUIDANCE. A TOTAL AREA OF APPROXIMATELY 9,500 SF OF DEGRADED BUFFER WILL BE ENHANCED ON THE TALBOT SITE. THE ENHANCEMENT AREAS INCLUDE INVASIVE SPECIES REMOVAL AND INSTALLATION OF NATIVE TREES, SHRUBS, AND GROUNDCOVER PLANTS. nv�Rvi��ni THE MITIGATION PLAN CONSISTS OF APPROXIMATELY 9,500 SF OF WETLAND NRO1 BUFFER ENHANCEMENT ON THE TALBOT SITE, PLUS SNAG AND HINGE -CUT TREE CREATION IN THE BUFFER OF HONEY DEW CREEK. THE MITIGATION PLAN INCLUDES A COMPREHENSIVE FIVE-YEAR MAINTENANCE AND MONITORING PLAN, PER RMC 4-3-50.L.3. THE PLAN SPECIFIES APPROPRIATE SPECIES FOR PLANTING AND PLANTING TECHNIQUES, DESCRIBES PROPER MAINTENANCE ACTIVITIES, AND SETS FORTH PERFORMANCE STANDARDS TO BE MET YEARLY DURING MONITORING. THESE SPECIFICATIONS AND STANDARDS WILL ENSURE THAT ENHANCEMENT/RESTORATION PLANTINGS WILL BE MAINTAINED, MONITORED, AND SUCCESSFULLY ESTABLISHED WITHIN THE FIRST FIVE YEARS FOLLOWING IMPLEMENTATION. BUFFER ENHANCEMENT WILL INCLUDE REMOVAL OF INVASIVE SPECIES, INSTALLATION OF NATIVE TREES, SHRUBS, AND GROUNDCOVER, AND CREATION OF HABITAT SNAGS AND HINGE -CUT TREES FROM SUITABLE TREES PROPOSED FOR REMOVAL FROM THE HONEY DEW CREEK BUFFER THESE MITIGATION ACTIVITIES ARE INTENDED TO INCREASE NATIVE PLANT COVER, DECREASE INVASIVE SPECIES PREVALENCE, IMPROVE NATIVE SPECIES DIVERSITY, AND PROVIDE FOOD AND OTHER HABITAT RESOURCES FOR WILDLIFE. 1 OF2 GOALS 1. ENHANCE DEGRADED CRITICAL AREA BUFFER. a. ESTABLISH DENSE AND DIVERSE VEGETATION COMMUNITIES THROUGHOUT THE MITIGATION AREA. b. INCREASE SPECIAL HABITAT FEATURES IN BUFFER AREAS THROUGH CREATION OF HABITAT SNAGS AND HINGE -CUT TREES. PERFORMANCE STANDARDS (TALBOT SITE) THE STANDARDS LISTED BELOW WILL BE USED TO JUDGE THE SUCCESS OF THE PLAN OVER TIME. IF THE STANDARDS ARE MET AT THE END OF THE FIVE-YEAR MONITORING PERIOD, THE CITY SHALL RELEASE THE PERFORMANCE BOND. 2 THE WATERSHED COMPANY 750 Sixth Street South Kirkland WA 98033 425.822.5242 www.watershedco.com Science & Design 1. SURVIVAL: a. 100% SURVIVAL OF ALL INSTALLED WOODY VEGETATION AT THE END OF YEAR 0 Lo 1, STARTING FROM THE DATE OF SUBSTANTIALLY COMPLETE INSTALLATION. fr co THIS STANDARD MAY BE MET THROUGH ESTABLISHMENT OF INSTALLED w � PLANTS OR BY REPLANTING AS NECESSARY TO ACHIEVE THE REQUIRED z U-) NUMBERS. O LU MO b. 80% SURVIVAL OF ALL INSTALLED WOODY VEGETATION AT THE END OF YEAR 0 CN 2. THIS STANDARD MAY BE MET THROUGH ESTABLISHMENT OF INSTALLED LV O PLANTS OR BY REPLANTING AS NECESSARY TO ACHIEVE THE REQUIRED z Q+ z Q N NUMBERS. h < It - LO i. SURVIVAL BEYOND YEAR 2 IS DIFFICULT TO TRACK. THEREFORE, DIVERSITY J O w M LO LO O AND COVER STANDARDS ARE PROPOSED IN PLACE OF SURVIVAL (SEE U)~ 00 BELOW). I --I � U) coz wQ Q O 2. NATIVE VEGETATION COVER IN PLANTED AREA: w � O� a. ACHIEVE AT LEAST 60% COVER OF NATIVE SHRUBS BY THE END OF YEAR 3. LV T z TRANSMISSION LINE -FRIENDLY NATIVE VOLUNTEER SPECIES MAY COUNT O Q N O 0 TOWARD THIS STANDARD. r q) z b. ACHIEVE AT LEAST 80% COVER OF NATIVE SHRUBS BY THE END OF YEAR 5. �-I LO W TRANSMISSION LINE -FRIENDLY NATIVE VOLUNTEER SPECIES MAY COUNT -C O Lu M 0C TOWARD THIS STANDARD. LL z O 3. SPECIES DIVERSITY IN PLANTED AREAS: �j Q W N W U a. ESTABLISH AT LEAST FOUR NATIVE SHRUB SPECIES, BY W fr J YEAR 5. TRANSMISSION LINE -FRIENDLY NATIVE VOLUNTEER SPECIES MAY Lij U COUNT TOWARD THIS STANDARD. "ESTABLISHMENT" IS CONSIDERED TO BE AT F-�i 0- C) LEAST FOUR HEALTHY, INDIVIDUAL PLANTS OF A GIVEN SPECIES PRESENT w Q WITHIN THE MITIGATION AREAS. 4. INVASIVE SPECIES STANDARD: NO MORE THAN 20% COVER OF INVASIVE SPECIES IN THE PLANTING AREA IN ANY MONITORING YEAR, EXCEPT SHALL NOT EXCEED 10% COVER AT THE END OF YEAR 5. INVASIVE SPECIES ARE DEFINED AS ANY CLASS A, B, OR C NOXIOUS WEEDS AS LISTED BY THE KING COUNTY NOXIOUS WEED CONTROL BOARD. NOT FOR CONSTRUCTION © Copyright- The Watershed Company W z O W w 06 W J Q m D W m�_j z 0- 0 Z �o 00 LU~ o � 00 T W N Q 06 0 o 0 in SHEET SIZE: ORIGINAL PLAN IS 22" x 34". SCALE ACCORDINGLY. PROJECT MANAGER: JC W z DESIGNED: LM DRAFTED: LM CHECKED: JC/MF JOB NUMBER: m 111103.11 W Z SHEET NUMBER: a 5 OF6Q 0