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HomeMy WebLinkAboutR-414039W W 0 U) Cn Q W W N W z W I W W U) TALBOT MITIGATION NOTES MONITORING METHODS THIS MONITORING PROGRAM IS DESIGNED TO TRACK THE SUCCESS OF THE MITIGATION SITE OVER TIME BY MEASURING THE DEGREE TO WHICH THE PERFORMANCE STANDARDS LISTED ABOVE ARE BEING MET. A FIVE YEAR MONITORING PERIOD IS PROPOSED, CONSISTENT WITH THE METHODS OUTLINED IN RMC 4-3-501.3. PER RMC 4-3-501.3, SHOULD THE MITIGATION PROJECT FAIL TO MEET ESTABLISHED SUCCESS CRITERIA AT ANY POINT, THE MONITORING PERIOD SHALL BE STARTED OVER AT YEAR ONE. THE ADMINISTRATOR SHALL HAVE THE AUTHORITY TO MODIFY OR EXTEND THE MONITORING PERIOD AND REQUIRE ADDITIONAL MONITORING REPORTS FOR UP TO TEN (10) YEARS WHEN ANY OF THE FOLLOWING CONDITIONS APPLY: A. THE PROJECT DOES NOT MEET THE PERFORMANCE STANDARDS IDENTIFIED IN THE MITIGATION PLAN; B. THE PROJECT DOES NOT PROVIDE ADEQUATE REPLACEMENT FOR THE FUNCTIONS AND VALUES OF THE IMPACTED CRITICAL AREA; C. THE PROJECT INVOLVES ESTABLISHMENT OF FORESTED PLANT COMMUNITIES, WHICH REQUIRE LONGER TIME FOR ESTABLISHMENT. MONITORING OF THE MITIGATION SITE AND ASSOCIATED MONITORING REPORTS WILL BE CONDUCTED/PREPARED BY A RESTORATION SPECIALIST AND SUBMITTED TO THE CITY FOR REVIEW. 1. AN AS -BUILT PLAN AND REPORT WILL BE PREPARED WITHIN 30 DAYS OF SUBSTANTIALLY COMPLETE INSTALLATION OF THE MITIGATION AREA. THE AS -BUILT PLAN WILL DOCUMENT CONFORMANCE WITH THESE PLANS AND WILL DISCLOSE ANY SUBSTITUTIONS OR OTHER NON -CRITICAL DEPARTURES. FOR THE TALBOT SITE, THE AS -BUILT PLAN WILL ESTABLISH BASELINE PLANT INSTALLATION QUANTITIES, PHOTO POINTS, MONITORING TRANSECTS, AND SURVEY PLOTS THAT WILL BE USED THROUGHOUT THE MONITORING PERIOD TO MEASURE THE PERFORMANCE STANDARDS. FOR THE HONEY DEW CREEK SITE, THE AS -BUILT SHOULD NOTE THE CREATION OF ALL HABITAT TREES, AS WELL AS ANY DEVIATIONS FROM THIS PLAN SET. 2. FOR THE FIRST YEAR FOLLOWING INSTALLATION, MONITORING REPORTS SHALL BE SUBMITTED QUARTERLY TO THE CITY FOR THE TALBOT SITE. THEREAFTER ANNUAL REPORTS FOR THE TALBOT SITE SHALL BE SUBMITTED AT THE END OF THE GROWING SEASON (YEARS 2-5). ANNUAL MONITORING REPORTS WILL INCLUDE THE FOLLOWING INFORMATION: a. SUMMARY OF PREVIOUS/SPRING VISITS. b. PLANT SURVIVAL AND/OR MORTALITY IN MITIGATION AREAS. c. CALCULATION OF NATIVE SPECIES COVER IN SURVEY PLOTS USING THE POINT -FRAME METHOD AND ALONG TRANSECTS USING THE LINE -INTERCEPT METHOD. d. ESTIMATES OF NATIVE SPECIES COVER SITE WIDE. e. INVASIVE SPECIES COVER AT SURVEY PLOTS AND ALONG TRANSECTS AND ESTIMATED SITE WIDE. f. COUNTS OF ESTABLISHED NATIVE SPECIES TO DETERMINE SPECIES RICHNESS. g. PHOTOGRAPHIC DOCUMENTATION AT PERMANENT PHOTOPOINTS. h. INTRUSIONS INTO THE PLANTING AREAS, EROSION, VANDALISM, TRASH, AND OTHER ACTIONS DETRIMENTAL TO THE OVERALL HEALTH OF THE MITIGATION AREAS. i. RECOMMENDATIONS FOR MAINTENANCE IN THE MITIGATION AREAS. j. RECOMMENDATIONS FOR REPLACEMENT OF ALL DEAD OR DYING PLANT MATERIAL WITH SAME OR LIKE SPECIES AND NUMBER AS ON THE APPROVED PLAN. 3. SPRING MONITORING IS RECOMMENDED EARLY IN EACH GROWING SEASON IN YEARS 2 THROUGH 5 TO NOTIFY THE OWNER AND/OR MAINTENANCE CREWS OF NECESSARY EARLY SEASON MAINTENANCE. RECOMMENDATIONS WILL BE ISSUED IN A SPRING MEMO AND WILL NOT BE SUBMITTED TO THE CITY. CONSTRUCTION NOTES AND SPECIFICATIONS GENERALNOTES THE RESTORATION SPECIALIST WILL OVERSEE THE FOLLOWING: 1. TREE SNAGGING AND HINGE -CUTTING. 2. INVASIVE WEED CLEARING AND SITE PREPARATION; AND 3. PLANT MATERIAL INSPECTION. a. PLANT DELIVERY INSPECTION. b. 50% PLANT INSTALLATION/LAYOUT INSPECTION. c. 100% PLANT INSTALLATION INSPECTION. WORK SEQUENCE 1. HABITAT FEATURE CREATION: a. SNAG DESIGNATED TREES ACCORDING TO PLAN DETAIL B, SHEET 4, AND CONSISTENT WITH RECOMMENDATIONS IN THE ASSOCIATED GEOTECHNICAL REPORT. i. TREES SHOULD BE ACCESSED BY FOOT. ii. SNAG TOPS SHOULD BE PLACED PERPENDICULAR TO THE SLOPE, OR ROUGHLY PARALLEL TO THE SLOPE CONTOUR, IN A STABLE POSITION. iii. REMAINING TREE DEBRIS SHOULD BE SCATTERED UPSLOPE OF THE BUFFER AREA NEARBY. b. HINGE -CUT DESIGNATED TREES ACCORDING TO PLAN DETAIL A, SHEET 4. 2. CLEAR THE PLANTING AREA OF ALL INVASIVE WOODY VEGETATION INCLUDING BUT NOT LIMITED TO HIMALAYAN BLACKBERRY. PULL OTHER HERBACEOUS INVASIVE VEGETATION AS ENCOUNTERED (E.G., REED CANARYGRASS, HERB ROBERT). 3. INSTALL EROSION CONTROLS SUCH AS WATTLES OR JUTE MAT AS DETERMINED NECESSARY IN COORDINATION WITH GEOTECHNICAL CONSULTANT. 4. PREPARE SOIL PER DETAIL F, SHEET 4. 5. INSTALL PLANTING AREAS: a. LAYOUT VEGETATION TO BE INSTALLED PER THE PLANTING PLAN AND PLANT SCHEDULE WITH CONSIDERATION OF PLANT SPECIES GROWING CONDITIONS. b. PREPARE A PLANTING PIT FOR EACH PLANT AND INSTALL PER THE PLANTING DETAILS. INSTALL PLANTS DURING DORMANT SEASON (OCTOBER 15TH/ TO MARCH 15TH/). c. MULCH EACH PLANT WITH A CIRCULAR WOOD CHIP MULCH RING, 4 INCHES THICK AND EXTENDING 9 INCHES FROM THE BASE OF THE PLANT (18-INCH DIAMETER). IF THERE ARE LOTS OF INVASIVE PLANTS REMOVED, BLANKET MULCH THE AREA. MAINTAIN THREE INCH GAP BETWEEN MULCH AND PLANT STEM. d. SCHEDULE WATERING TRUCK TO PROVIDE AT LEAST ONE INCH OF WATER PER WEEK, AS NECESSARY, FROM JUNE 1ST/ TO SEPTEMBER 30TH/ FOR AT LEAST TWO SUMMERS AFTER INITIAL PLANT INSTALLATION. ALTERNATIVE WATERING METHODS (E.G., GATOR BAGS) MAY BE UTILIZED WITH APPROVAL FROM THE RESTORATION SPECIALIST. MAINTENANCE MITIGATION PLAN AREAS SHALL BE MAINTAINED FOR FIVE YEARS FOLLOWING COMPLETION OF THE INITIAL PLANT AND SEED INSTALLATION. 1. ROUTINE MAINTENANCE OF TALBOT PLANTING AREAS: a. AT LEAST TWICE YEARLY, REMOVE BY HAND ALL COMPETING WEEDS AND WEED ROOTS FROM BENEATH EACH INSTALLED PLANT AND ANY DESIRABLE VOLUNTEER VEGETATION TO A DISTANCE OF 12 INCHES FROM THE MAIN PLANT STEM. WEEDING SHOULD OCCUR AS NEEDED DURING THE SPRING AND SUMMER. FREQUENT WEEDING WILL RESULT IN LOWER MORTALITY AND LOWER PLANT REPLACEMENT COSTS. b. DO NOT WEED THE AREA NEAR THE PLANT BASES WITH STRING TRIMMER (WEED WHACKER). NATIVE WOODY PLANTS ARE EASILY DAMAGED OR KILLED, AND WEEDS EASILY RECOVER AFTER TRIMMING. c. DURING REGULAR WEED MAINTENANCE EFFORTS (FOCUSED AROUND INSTALLED VEGETATION), ALSO GRUB OUT ANY INVASIVE SPECIES PRESENT IN DESIGNATED MITIGATION AREAS AND REMOVE FROM THE SITE. d. APPLY SLOW -RELEASE, PHOSPHOROUS -FREE, GRANULAR FERTILIZER TO EACH INSTALLED PLANT ANNUALLY IN THE SPRING (BY JUNE 1) OF YEARS 2 THROUGH 5. e. MULCH THE WEEDED AREAS BENEATH EACH PLANT WITH WOOD CHIP MULCH AS NECESSARY TO MAINTAIN A MINIMUM 4-INCH-THICK, 18-INCH-DIAMETER MULCH RING. f. ENSURE PLANTS RECEIVE A MINIMUM OF ONE INCH OF WATER PER WEEK, AS NEEDED, FROM JUNE 1ST/ THROUGH SEPTEMBER 30TH/ FOR THE FIRST TWO YEARS FOLLOWING INSTALLATION. THE MOST FEASIBLE IRRIGATION OPTION FOR THE SITE IS EXPECTED TO BE USE OF A WATERING TRUCK. IRRIGATION BEYOND THE SECOND YEAR MAY BE NEEDED BASED ON SITE PERFORMANCE OR SIGNIFICANT REPLANTING. g. FOLLOW ADDITIONAL RECOMMENDATIONS NOTED IN THE SPRING OR ANNUAL MONITORING SITE VISIT. h. AS DIRECTED, INSTALL REPLACEMENT PLANTS DURING THE UPCOMING DORMANT SEASON (OCTOBER 15TH/ TO MARCH 15TH/) TO ENSURE AN 80% SURVIVAL RATE. CONTINGENCY PLAN PER RMC 4-3-050.L.2,. A SURETY DEVICE IS REQUIRED TO ENSURE THE APPLICANT'S COMPLIANCE WITH THE TERMS OF THE MITIGATION AGREEMENT. THE DEVICE SHALL MEET THE REQUIREMENTS SET FORTH IN RMC 4-3-0501.2. PLANTING & MITIGATION NOTES (2 OF 2 SCALE: NTS MATERIALS 1. COMPOST: SHALL MEET WSDOT STANDARDS SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPAL CONSTRUCTION, 9-14.4(8) FOR FINE COMPOST. 2. FERTILIZER (FOR NEAR AQUATIC ENVIRONMENTS): SLOW -RELEASE, PHOSPHOROUS -FREE GRANULAR FERTILIZER. LABEL MUST INDICATE THAT PRODUCT IS SAFE FOR AQUATIC ENVIRONMENTS. FOLLOW MANUFACTURER'S INSTRUCTIONS FOR USE. KEEP FERTILIZER IN WEATHER -TIGHT CONTAINER WHILE ON -SITE. FERTILIZER IS ONLY TO BE APPLIED IN YEARS TWO AND THREE, NOT IN YEAR ONE. 3. RESTORATION SPECIALIST: THE WATERSHED COMPANY [(425) 822-5242] PERSONNEL OR OTHER PERSON QUALIFIED TO EVALUATE ENVIRONMENTAL RESTORATION PROJECTS. 4. WOOD CHIP MULCH: "ARBORIST CHIPS" (CHIPPED WOODY MATERIAL) APPROXIMATELY ONE TO THREE INCHES IN MAXIMUM DIMENSION (NOT SAWDUST). THIS MATERIAL IS COMMONLY AVAILABLE IN LARGE QUANTITIES FROM ARBORISTS OR TREE -PRUNING COMPANIES. MULCH SHALL NOT CONTAIN APPRECIABLE QUANTITIES OF GARBAGE, PLASTIC, METAL, SOIL, AND DIMENSIONAL LUMBER OR CONSTRUCTION/DEMOLITION DEBRIS. NOT FOR CONSTRUCTION © Copyright- The Watershed Company THE WATERSHED COMPANY 750 Sixth Street South Kirkland WA 98033 425.822.5242 www.watershedco.com Science & Design V Lo co CD �j W � O z CD M--I W N � C) W o z z 0 N O M U ~ Lo 00 I� U)o rn z 0W Q co -� W 0 0� � w r z Q�N o O OMz `o W -OwM0� W � LL N p� p W N W J ^� Q W w 0— 0� W Q m_j U) z O co > w 06 z J J Q z O_ 1---_ �o � a m U 0 C/) �z co o 00 T w C) Q00 r-i o 0 'Oil SHEET SIZE: ORIGINAL PLAN IS 22" x 34". SCALE ACCORDINGLY. PROJECT MANAGER: JC w Z DESIGNED: LM LL DRAFTED: LM CHECKED: JC/MF JOB NUMBER: m 111103.11 Z SHEET NUMBER: a 6 OF6 Q 0