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SEFVICE, PFOPEFTY Ib: F474132
0 (E) FOAb, PLANT5 ( 160)
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0 OFEGON IFI5 (48) ZONING. F4.5
0 (E) SEWEF CAMAS LILY(46)
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io (N) WAIF SEFVICE LINE 19I,A1\1- CALCuLA1nO\ COUNTY, WA5-INGTON
• (N) COMMON 12FIVEWAY NEW TOTAL 5F: 31155F
• (N) HFOP05En LIPA SYSTEM - NON-STFUCTLFAL LIPA AFEAA 140 5F
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NOTES:
1. PUBLIC WATER QUALITY AND/OR QUANTITY SYSTEM
2. PROVIDE OVERFLOW CONVEYANCE SYSTEM, OVERFLOW CONVEYANCE HEIGHT TO ALLOW 6" MAXIMUM PONDING, PIPING TO A MINIMUM OF THE PLUMBING CODE OR CONVEY THE 25 YEAR STORM.
3. IF USING THE NATIVE SOIL INFILTRATION FOR SIZING, THE RATE SHALL BE DETERMINED BY ASTM STANDARD TESTING METHODS.
4. FLOW DISSIPATORS SHOULD BE USED IF ENTRY SLOPE TO THE BASIN IS GREATER THAN 3:1. FLOW DISSIPATORS SHALL BE CONSTRUCTED OUT OF ROCK OR GRAVEL PER DESIGN FLOW VELOCITY AT ENTRY OF THE FACILITY.
5. TREATMENT AREA SHALL HAVE HIGH DENSITY JUTE OR COCONUT MATTING OVER 18" MINIMUM OF GROWING MEDIUM OR BASE STABILIZATION METHOD AS APPROVED BY THE DISTRICT.
6. VEGETATION TO BE USED IN WET AREAS OF THE BASIN IS PER APPENDIX "A" OF R&D 07-20 FOR THE WET MOISTURE CONDITIONS.
7. VEGETATION TO BE USED IN OTHER AREAS OF BASIN CONFORMS TO PLANT LIST OF THIS HANDBOOK AS APPROVED BY DISTRICT.
NON—STRUCTURAL PLANTER/RAIN GARDEN LIDA -ANDBOO'C
DRAWING NO. 797 REVISED 05-16CleanWater Services
STORMWATER FACILITY BLENDED SOIL PROVIDED BY THE VENDOR.
FURNISH IMPORTED BLENDED SOIL FOR ALL VEGETATED LIDA FACILITIES CONFORMING TO THE FOLLOWING: • 100% OF THE MATERIAL MUST PASS THROUGH A 1/2—INCH SCREEN.
• GENERAL COMPOSITION — USE MATERIAL THAT IS ANY BLEND OF LOAMY SOIL, SAND, AND COMPOST THAT IS 30-40% • THE PH OF THE MATERIAL SHALL BE BETWEEN 6 MIN. AND 8.5 MAX.
COMPOST (BY VOLUME) AND MEETS THE OTHER CRITERIA IN THIS SPECIFICATION. • MANUFACTURED INERT MATERIAL (PLASTIC, CONCRETE, CERAMICS, METAL, ETC.) SHALL BE LESS THAN 1.0%BY
• ANALYSIS REQUIREMENTS FOR THE BLENDED MATERIAL: WEIGHT.
PARTICLE GRADATION — A SIEVE ANALYSIS OF THE BLENDED MATERIAL, INCLUDING COMPOST, SHALL BE CONDUCTED IN • THE ORGANIC MATTER CONTENT SHALL BE BETWEEN 30 AND 70% (DRY WEIGHT BASIS).
CONFORMANCE WITH ASTM C117/C136, AASHTO T11/T27, ASTM D422/D1140, OR ASTM D6913. THE ANALYSIS SHALL • SOLUBLE SALT CONTENT SHALL BE LESS THAN 6.0 MMHOS/CM.
INCLUDE THE FOLLOWING SIEVE SIZES: 1 INCH, 3/8 INCH, #4, #10, #20, #40, #60, #100, #200. THE GRADATION OF THE • MATURITY INDICATOR SHALL BE GREATER THAN 80% FOR GERMINATION AND VIGOR.
BLEND SHALL MEET THE FOLLOWING GRADATION CRITERIA. • STABILITY SHALL BE 'STABLE' TO 'VERY STABLE'.
SIEVE SIZE PERCENT PASSING • CARBON/NITROGEN (C/N) RATIO SHALL BE LESS THAN 25:1.
1 INCH 100 • TRACE METALS TEST RESULT = "PASS."
# 4 75 0 CONSTRUCTION
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STORMWATER FACILITY BLENDED SOIL:
100
15-5025 • PROTECTION OF THE SOIL — THE MATERIAL SHALL BE PROTECTED FROM ALL SOURCES OF CONTAMINATION, INCLUDING
# WEED SEEDS, WHILE AT THE SUPPLIER, IN CONVEYANCE, AND AT THE PROJECT SITE.
# 200 5-15
THE MATERIAL SHALL BE LOOSE AND EASILY BROKEN INTO SMALL PIECES • WET AND WINTER CONDITIONS — HAULING AND PLACEMENT OF THE MATERIAL WILL NOT BE ALLOWED WHEN THE
• WEATHER IS TOO WET OR THE GROUND IS FROZEN OR SATURATED AS DETERMINED BY THE OWNERS REPRESENTATIVE.
: IT SHALL BE WELL MIXED AND HOMOGENOUS. , PLACEMENT OF THE SOIL — PLACE THE MATERIAL IN LOOSE LIFTS, NOT TO EXCEED 8 INCHES EACH AND EACH LIFT
• IT SHALL BE FREE OF WOOD PIECES, PLASTIC, AND OTHER FOREIGN MATTER. SHALL BE COMPACTED WITH A WATER—FILLED LANDSCAPE ROLLER. DO NOT OTHERWISE MECHANICALLY COMPACT THE
• IT SHALL HAVE NO VISIBLE FREE WATER. MATERIAL.
COMPOST . TIMING OF PLANT INSTALLATION — WEATHER PERMITTING AND AS APPROVED, INSTALL PLANTS AS SOON AS POSSIBLE
THE COMPOST SHALL BE DERIVED FROM PLANT MATERIAL AND PROVIDED BY A MEMBER OF THE US COMPOSTING AFTER PLACING AND GRADING THE SOIL IN ORDER TO MINIMIZE EROSION AND FURTHER COMPACTION.
COUNCIL SEAL OF TESTING ASSURANCE (STA) PROGRAM. SEE WWW.COMPOSTING000NCIL.ORG FOR A LIST OF LOCAL • EROSION CONTROL — TEMPORARY EROSION CONTROL MEASURES ARE REQUIRED UNTIL PERMANENT STABILIZATION
PROVIDERS. MEASURES ARE FUNCTIONAL.
THE COMPOST SHALL BE THE RESULT OF THE BIOLOGICAL DEGRADATION AND TRANSFORMATION OF PLANT—DERIVED . PROTECTION OF THE INSTALLED SOIL — IN ALL CASES, THE PROTECT INSTALLED MATERIAL FROM.FOOD OR EQUIPMENT
MATERIALS UNDER CONDITIONS DESIGNED TO PROMOTE AEROBIC DECOMPOSITION. THE MATERIAL SHALL BE WELL TRAFFIC AND SURFACE WATER RUNOFF. INSTALL TEMPORARY FENCING OR WALKWAYS AS NEEDED TO KEEP WORKERS,
COMPOSTED, FREE OF VIABLE WEED SEEDS, AND STABLE WITH REGARD TO OXYGEN CONSUMPTION AND CARBON DIOXIDE PEDESTRIANS, AND EQUIPMENT OUT OF THE AREA. UNDER NO CIRCUMSTANCES SHOULD MATERIALS AND EQUIPMENT
GENERATION. THE COMPOST SHALL HAVE NO VISIBLE FREE WATER AND PRODUCE NO DUST WHEN HANDLED. IT SHALL BE STORED ON TOP OF THE INSTALLATION AREA.
MEET THE FOLLOWING CRITERIA, AS REPORTED BY THE US COMPOSTING COUNCIL STA COMPOST TECHNICAL DATA SHEET
BLENDED SOIL SPECIFICATION FOR VEGETATED LIDA FACILITIES L DA HIANDBOO<
DRAWING NO. 798 06-16 CleanWater Services
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