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LAL.ONE AL7D1710N
<br /> SECTION 8, TOWNSHIP 29N , RANGE 5E , W. M . Z
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<br /> G `� \ BASIC SOIL AMENDMENT NOTES o
<br /> SOIL RETENTION. RETAIN, IN AN UNDISTURBED STATE, THE DUFF LAYER AND NATIVE TOPSOIL TO THE MAXIMUMEXTENT PRACTICABLE. IN
<br /> ANY AREAS REQUIRING GRADING REMOVE AND STOCKPILE THE DUFF LAYER AND TOPSOIL ON SITE IN A DESIGNATED, CONTROLLED AREA,
<br /> \ \ NOT ADJACENT TO PUBLIC RESOURCES AND CRITICAL AREAS, TO BE REAPPLIED TO OTHER PORTIONS OF THE SITE WHERE FEASIBLE.
<br /> as \\ ` _ I } 1 SOIL QUALITY. ALL AREAS SUBJECT TO CLEARING AND GRADING THAT HAVE NOT BEEN COVERED BY IMPERVIOUS SURFACE, INCORPORATED j<1<1<1<H<1<INTO A DRAINAGE FACILITY OR ENGINEERED AS STRUCTURAL FILL OR SLOPE SHALL, AT PROJECT COMPLETION, DEMONSTRATE THE1173 FOLLOWING:
<br /> '`-., 11. A TOPSOIL LAYER WITH A MINIMUM ORGANIC MATTER CONTENT OF 107 DRY WEIGHT IN PLANTING BEDS, AND 5%ORGANIC MATTER
<br /> '— CONTENT IN TURF AREAS, AND A PH FROM 6.0 TO 8.0 OR MATCHING THE PH OF THE UNDISTURBED SOIL. THE TOPSOIL LAYER SHALL
<br /> HAVE A MINIMUM DEPTH OF EIGHT INCHES EXCEPT WHERE TREE ROOTS LIMIT THE DEPTH OF INCORPORATION OF AMENDMENTS NEEDED p
<br /> EX.FLOW �\ \. TO MEET THE CRITERIA. SUBSOILS BELOW THE TOPSOIL LAYER SHOULD BE SCARIFIED AT LEAST 4 INCHES WITH SOME INCORPORATION g -�
<br /> ARROW `..., ex.PATIO OF THE UPPER MATERIAL TO AVOID STRATIFIED LAYERS, WHERE FEASIBLE. 6-4
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<br /> �C (TYP.) I `` 2. MULCH PLANTING BEDS WITH 2 INCHES OF ORGANIC MATERIAL
<br /> 3. USE COMPOST AND OTHER MATERIALS THAT MEET THESE ORGANIC CONTENT REQUIREMENTS: c rt c°;d
<br /> EX, 7— 0. THE ORGANIC CONTENT FOR 'PRE-APPROVED"AMENDMENT RATES CAN BE MET ONLY USING COMPOST MEETING THE COMPOST
<br /> 7.5'X 10'INFILTRATION DISPERSION\ DECK SPECIFICATION FOR BMP T7.30: BIORETENTION CELLS, SWALES, AND PLANTER BOXES (P.959), WITH THE EXCEPTION THAT THE s
<br /> TRENCH(SEE DETAIL SHEET 3) COMPOST MAY HAVE UP TO 357 BIOSOLIDS OR MANURE. THE COMPOST MUST ALSO HAVE AN ORGANIC MATTER CONTENT OF 407 TO ESOP
<br /> \ I 657, AND A CARBON TO NITROGEN RATIO BELOW 25:1. THE CARBON TO NITROGEN RATIO MAY BE AS HIGH AS 35:1 FOR PLANTINGS
<br /> - I COMPOSED ENTIRELY OF PLANTS NATIVE TO THE PUGET SOUND LOWLANDS REGION.
<br /> J b. CALCULATED.AMENDMENT RATES MAY BE MET THROUGH USE OF COMPOSTED MATERIAL MEETING (A.) ABOVE; OR OTHER ORGANIC
<br /> EX.SFR I MATERIALS AMENDED TO MEET THE CARBON TO NITROGEN RATIO REQUIREMENTS, AND NOT EXCEEDING THE CONTAMINANT LIMITS
<br /> `'^.. I n _ �A \� L IDENTIFIED IN TABLE 220-B, TESTING PARAMETERS, IN WAC 173-350-220. ,J
<br /> 25'VEG.FLOW -H }-.;,,y
<br /> PATH l/ " AREA'A' ��.. -� —• M_ W, Q THE RESULTING SOIL SHOULD BE CONDUCIVE TO THE TYPE.OF VEGETATION TO BE ESTABLISHED. O
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<br /> }.---�. IMPLEMENTATION OPTIONS: THE SOIL QUALITY DESIGN GUIDELINES LISTED ABOVE CAN BE MET BY USING ONE OF THE METHODS LISTED ♦^
<br /> 4"PVC I I a u.S`�-... BELOW: v) W
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<br /> \1T ~"` �' py 1. LEAVE UNDISTURBED NATIVE VEGETATION AND SOIL, AND PROTECT FROM COMPACTION DURING CONSTRUCTION. 06
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<br /> ,� 2. AMEND EXISTING SITE TOPSOIL OR SUBSOIL EITHER AT DEFAULT 'PRE-APPROVED'RATES, OR AT CUSTOM CALCULATED RATES BASED
<br /> PROP.`ADDITIGN` 1171 a \ ON TESTS OF THE SOIL AND AMENDMENT. W Q
<br /> � 3. STOCKPILE EXISTING TOPSOIL DURING GRADING, AND REPLACE IT PRIOR TO PLANTING. STOCKPILED TOPSOIL MUST ALSO BE AMENDED (D
<br /> 7
<br /> (388 SF) _ .�
<br /> � IF NEEDED TO MEET THE ORGANIC MATTER OR DEPTH REQUIREMENTS, EITHER AT A DEFAULT 'PRE-APPROVED"RATE OR AT A CUSTOM V z
<br /> CALCULATED RATE. ^
<br /> 4. IMPORT TOPSOIL MIX OF SUFFICIENT ORGANIC CONTENT AND DEPTH TO MEET THE REQUIREMENTS. Q W a-
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<br /> MORE THAN ONE METHOD MAY BE USED ON DIFFERENT PORTIONS OF THE SAME SITE. SOIL THAT ALREADY MEETS THE DEPTH AND z G
<br /> ORGANIC MATTER QUALITY STANDARDS, AND IS NOT COMPACTED, DOES NOT NEED TO BE AMENDED.
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<br /> D'ROW AREA A AREA B ZSTOCKPILE AND UNGRADED ��//LL Q
<br /> ., L AMEND SOIL IF F1UNCOMPACTEDUNDISTURBED Q
<br /> NECESSARY "OPTION 3"
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<br /> BASIC DRAINAGE NOTES '¢ 0 9
<br /> 0 20 40 W QMH
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<br /> VIII 1. NO PART OF THE DRAINAGE SYSTEM SHALL BE COVERED, CONCEALED, OR PUT INTO USE UNTIL IT O: Si N
<br /> HORIZONTAL SCALE HAS'BEEN INSPECTED, TESTED, AND ACCEPTED BY THE CITY OF EVERETT. LO N
<br /> TRENCH NOTE: H•�v v
<br /> LOCATION OF TRENCH MAY BE 2. ALL WORK AND MATERIAL SHALL CONFORM TO THE CITY OF EVERETT DESIGN AND CONSTRUCTION W W w'�
<br /> MODIFIED SO LONG AS TRENCH - - STANDARDS AND SPECIFICATIONS AND THE WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD, x
<br /> DIMENSIONS & 25' VEGETATED BRIDGE, AND MUNICIPAL CONSTRUCTION (CURRENT EDITION). o
<br /> ON-SITE FLOWPATH ARE
<br /> MAINTAINEDa
<br /> 3. APPROXIMATE LOCATIONS OF EXISTING UTILITIES HAVE BEEN OBTAINED FROM AVAILABLE RECORDS
<br /> AND ARE SHOWN FOR CONVENIENCE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFICATION
<br /> OF LOCATIONS AND TO AVOID DAMAGE TO ANY ADDITIONAL UTILITIES SHOWN. IF CONFLICTS WITH V
<br /> EXISTING UTILITIES ARISE DURING CONSTRUCTION, THE CONTRACTOR SHALL NOTIFY THE PUBLIC Q Z
<br /> WORKS INSPECTOR AND ANY CHANGES REQUIRED SHALL BE APPROVED BY THE CITY ENGINEER
<br /> F4"RIGID
<br /> LEXIBLE OF 6" PRIOR TO COMMENCEMENT OF RELATED CONSTRUCTION ON THE PROJECT. Z
<br /> PERFORATED PIPE 4. ALL STORM SYSTEMS WITHIN THE PUBLIC RIGHT-OF-WAY OR IN EASEMENTS MUST BE STAKED BY W Ir
<br /> 24" WASHED ROCK SURVEY FOR LINE AND GRADE PRIOR TO STARTING CONSTRUCTION. LU W
<br /> 1 1/2"_3/4• W
<br /> _ 5. ALL CATCH BASIN GRATES MUST BE STENCILED OR STAMPED "DUMP NO WASTE, DRAINS TO ca) 0Z
<br /> STREAM, LAKE, RIVER, PUGET SOUND, OR WETLAND." CHOOSE APPROPRIATE FEATURE FOR THE 0 z
<br /> 75--, SECTIONA PROJECT.
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<br /> INFILTRATION/DISPERSION TRENCH DETAIL
<br /> NOT TO SCALE
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<br /> 9/21/20
<br /> Know what's below. 1"=20'
<br /> Call two business w
<br /> days before you dig. 2 2
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