HomeMy WebLinkAboutR-396107SEC. 14, TWP 23 N, R5E W.M.
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SOIL AMENDMENTS
• SOIL RETENTION. RETAIN, IN AN UNDISTURBED STATE, THE DUFF LAYER AND NATIVE TOPSOIL TO THE MAXIMUM EXTENT
PRACTICABLE. IN ANY AREAS REQUIRING GRADING REMOVE AND STOCKPILE THE DUFF LAYER AND TOPSOIL ON SITE IN A
DESIGNATED, CONTROLLED AREA, NOT ADJACENT TO PUBLIC RESOURCES AND CRITICAL AREAS, TO BE REAPPLIED TO OTHER
PORTIONS OF THE SITE WHERE FEASIBLE.
• SOIL QUALITY. ALL AREAS SUBJECT TO CLEARING AND GRADING THAT HAVE NOT BEEN COVERED BY IMPERVIOUS SURFACE,
INCORPORATED INTO A DRAINAGE FACILITY OR ENGINEERED AS STRUCTURAL FILL OR SLOPE SHALL, AT PROJECT COMPLETION,
DEMONSTRATE THE FOLLOWING:
1. A TOPSOIL LAYER WITH A MINIMUM ORGANIC MATTER CONTENT OF 109 DRY WEIGHT IN BEDS, AND 5% ORGANIC MATTER 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
HAVE A MINIMUM DEPTH OF EIGHT INCHES EXCEPT WHERE TREE ROOTS LIMIT THE DEPTH OF INCORPORATION OF AMENDMENTS
NEEDED TO MEET THE CRITERIA. SUBSOILS BELOW THE TOPSOIL LAYER SHOULD BE SCARIFIED AT LEAST 4 INCHES WITH SOME
INCORPORATION OF THE UPPER MATERIAL TO AVOID STRATIFIED LAYERS, WHERE FEASIBLE.
2. MULCH PLANTING BEDS WITH 2 INCHES OF ORGANIC MATERIAL
3. USE COMPOST AND OTHER MATERIALS THAT MEET THESE ORGANIC CONTENT REQUIREMENTS:
o)THE ORGANIC CONTENT FOR 'PRE -APPROVED" AMENDMENT RATES CAN BE MET ONLY USING COMPOST MEETING THE COMPOST
SPECIFICATION FOR BIORETEN TION (REFER TO SECTION C. 2. 6) WITH THE EXCEPTION THAT THE COMPOST MAY HAVE UP TO 35%
BIOSOLIDS OR MANURE. THE COMPOST MUST ALSO HAVE AN ORGANIC MATTER CONTENT OF 40% TO 657., AND A CARBON TO
NITROGEN RATIO BELOW 25: 1. THE
CARBON TO NITROGEN RATIO MAY BE AS HIGH AS 35: 1 FOR PLANTINGS COMPOSED ENTIRELY OF PLANTS NATIVE TO THE
PUGET SOUND LOWLANDS REGION.
b)CALCULATED AMENDMENT RATES MAY BE MET THROUGH USE OF COMPOSTED MATERIAL MEETING A)" ABOVE, OR OTHER
ORGANIC MATERIALS AMENDED TO MEET THE CARBON TO NITROGEN RATIO REQUIREMENTS, AND NOT EXCEEDING THE LIMITS
IDENTIFIED IN TABLE 220-B, TESTING PARAMETERS, IN
WAC 173-350-220.
4. THE RESULTING SOIL SHOULD BE CONDUCIVE TO THE TYPE OF VEGETATION TO BE ESTABLISHED.
• IMPLEMENTATION OPTIONS: THE SOIL QUALITY DESIGN GUIDELINES LISTED ABOVE CAN BE MET BY USING ONE OF THE METHODS
LISTED BELOW.•
1. LEAVE UNDISTURBED NATIVE VEGETATION AND SOIL, AND PROTECT FROM COMPACTION DURING CONSTRUCTION.
2. AMEND EXISTING SITE TOPSOIL OR SUBSOIL EITHER AT DEFAULT `PRE -APPROVED" RATES, OR AT CUSTOM CALCULATED RATES
BASED ON TESTS OF THE SOIL AND AMENDMENT.
3. STOCKPILE EXISTING TOPSOIL DURING GRADING, AND REPLACE IT PRIOR TO PLANTING.
4. STOCKPILED TOPSOIL MUST ALSO BE AMENDED IF NEEDED TO MEET THE ORGANIC MATTER OR DEPTH REQUIREMENTS, EITHER AT A
DEFAULT `PRE -APPROVED" RATE OR AT A CUSTOM CALCULATED RATE.
5.IMPORT TOPSOIL MIX OF SUFFICIENT ORGANIC CONTENT AND DEPTH TO MEET THE REQUIREMENTS.
MORE THAN ONE METHOD MAY BE USED ON DIFFERENT PORTIONS OF THE SAME SITE. SOIL THAT ALREADY MEETS THE DEPTH AND
ORGANIC MATTER QUALITY STANDARDS, AND IS NOT COMPACTED DOES NOT NEED TO BE AMENDED.
NO TES:
1. TEMPORARY CULVERTS, INTERCEPTOR DITCHES, AND
CHECK DAMS ARE SHOWN APPROXIMATE. ACTUAL LIMITS
AND LOCATIONS MAY VARY TO FACILITATE SITE
CONDITIONS AND CONSTRUCTION ACTIVITIES. ADDITIONAL
EROSION CONTROL MEASURES MAY BE REQUIRED AS
DEEMED NECESSARY BY THE CITY OF RENTON
INSPECTOR.
2. ALL EXISTING BUILDINGS, FENCES, AND OTHER
STRUCTURAL IMPROVEMENTS IDENTIFIED WITHIN THE
CLEARING LIMITS SHALL BE REMOVED AND PROPERLY
DISPOSED PRIOR TO CLEARING. A SEPARATE DEMOLITION
PERMIT SHALL BE SUBMITTED AND APPROVED BY THE
CITY FOR ANY BUILDING OR STRUCTURE REMOVAL.
3. PERMANENT STORM DRAINAGE FACILITIES MAY BE USED
FOR TEMPORARY STORM WATER COLLECTION AND
CONVEYANCE CONTROLS IN CONJUNCTION WITH
NECESSARY TEMPORARY BMP'S DURING CONSTRUCTION.
ALL PERMANENT STORM DRAIN FACILITIES ACTIVE
DURING CONSTRUCTION SHALL BE CLEANED AND/OR
REPAIRED TO GOOD WORKING CONDITION PRIOR TO FINAL
PROJECT CLOSEOUT.
4. ALL TREES WITHIN THE CLEARING LIMITS, EXCEPT AS
NOTED TO BE PROTECTED SHALL BE REMOVED.
5. ADDITIONAL EROSION CONTROL MEASURES MAY BE
REQUIRED AS DEEMED NECESSARY BY THE CITY OF
REN TON.
6. THE SOIL MOISTURE HOLDING CAPACITY OF ALL NEW
PERVIOUS SURFACE THAT AT PROJECT COMPLETION WILL
NOT BE COVERED BY IMPERVIOUS SURFACE OR
INCORPORATED INTO A DRAINAGE FACILITY MUST BE
PROTECTED. THE DUFF LAYER AND NATIVE TOPSOIL
SHALL BE RETAINED IN AN UNDISTURBED STATE TO THE
MAXIMUM EXTENT FEASIBLE.
7. ANY DUFF LAYER OR TOPSOIL REMOVED DURING
GRADING SHALL BE STOCKPILED ONSITE IN A
DESIGNATED, CONTROLLED AREA NOT ADJACENT TO
PUBLIC RESOURCES AND CRITICAL AREAS. THE MATERIAL
SHALL BE REAPPLIED TO OTHER PORTIONS OF THE SITE
WHERE FEASIBLE.
8. THE SOIL IN ANY AREA THAT HAS BEEN COMPACTED OR
THAT HAS HAD SOME OR ALL OF THE DUFF LAYER OR
UNDERLYING TOPSOIL REMOVED SHALL BE AMENDED TO
MITIGATE FOR LOSS OF MOISTURE -HOLDING CAPACITY IN
ACCORDANCE WITH THE REQUIRED SOIL AMENDMENTS ON
SHEET C1.02. CONTRACTOR SHALL PROVIDE METHODS
AND MATERIALS FOR SOIL AMENDMENT TO PROJECT
ENGINEER AND/OR LANDSCAPE ARCHITECT FOR
APPROVAL PRIOR TO CONSTRUCTION.
9. WATERING FOR DUST CONTROL MEASURES SHALL BE
PERFORMED AND PROVIDED BY THE CONTRACTOR AS
NECESSARY.
10. CLEARING, GRADING, AND RELATED ACTIVITIES FOR THIS
PROJECT ARE SUBJECT TO THE APPLICABLE CONDITIONS
OF THE DEPARTMENT OF ECOLOGY'S CONSTRUCTION
STORMWATER GENERAL PERMIT (CSWGP). A COPY OF
THE LETTER FROM THE DOE GRANTING COVERAGE UNDER
THE CSWGP SHALL BE PROVIDED TO THE CITY PRIOR TO
ANY CONSTRUCTION ACTIVITIES DISTURBING MORE THAN
ONE ACRE OF THE SITE. NPDES PERMIT NO.
WAR-305741.
CP I
CONSULTANTS
Site Planning - Civil Engineering
Land Use Consulting - Project Management
11431 WILLOWS RD. NE, SUITE 120
REDMOND, WA 98052
Phone: (425) 285-2390 1 FAX: (425) 285-2389
www.cphconsuItants.com
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CONSTRUCTION PERMIT SUBMITTAL
CONSTRUCTION RECORD DRAWINGS
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SEE C1.01
SURVEYED:
WITCH EVANS
DESIGNED:
JAMIE SCHROEDER
DRAWN:
PETER EVANS
CHECKED:
MJH
APPROVED:
xxx
SCALE:
1 " = 30'
ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATUM
MY OF
RENTON
•
Planning/Building/Public Works Dept.
CONSTRUCTION NOTES
OSTABILIZED CONSTRUCTION ENTRANCE PER COR STD. PLAN
215.10 ON SHEET C1.100.
2O TREE PROTECTION FENCE PER DETAIL ON SHEET C1.101.
3O SILT FENCE PER COR STD. PLAN 214.00 ON SHEET C1.100.
OAPPROX. LIMIT OF GRADING, SEE TYPICAL CLEARING LIMITS
DETAIL ON SHT. C1.101.
QCONSTRUCTION FENCING PER DETAIL ON SHEET C1.101.
6O INTERCEPTOR SWALE PER COR STD. PLAN 217.10 ON
SHEET C1.100.
O7 CHECK DAM AND SPACING PER COR STD. PLAN 217.40.
O12" TEMP. CULVERT, APPROX. LENGTH AND SIZE PER PLAN,
S=2% MIN.
OGRAVEL CONE FILTER AND RISER PER DETAIL ON SHEET
C1.101.
10 1.0 CY MIN. QUARRY SPALLS AT PIPE OR DITCH INLET OR
OUTFALL.
(-1-1)CATCH BASIN FILTER PER COR STD. PLAN 216.30 ON
SHEET C1.100
12 TEMP. SED. POND PER DETAIL ON SHEET C1.101.
13 PERMANENT STORM DRAINAGE IMPROVEMENTS UTILIZED
WITH TESC MEASURES, SEE SHT. C2.00 FOR DETAILS.
LEGEND
-X X X- SILT FENCE
TREE PROTECTION FENCING
/// // CONSTRUCTION FENCING
TEMPORARY INTERCEPTOR DITCH
WITH ROCK CHECK DAM
SD PERMANENT SD FACILITY
(SEE NOTE 3)
RIP-RAP/QUARRY SHALL PAD
Q CATCH BASIN INLET PROTECTION
TEMPORARY CULVERT
PROTECT EXIST. TREE,
0 SEE TREE PROTECTION DETAIL ON
SHEET C1.101
Is ONAL 1;�,
AR
CONSTRUCTION RECORD DRAWING
N THE AS -BUILT INFORMATION SHOWN
ON THIS PLAN IS PER A FIELD SURVEY
0 30 60 PERFORMED AND DATA PROVIDED BY
AXIS SURVEY & MAPPING AND/OR
R-396107 PLAN IN FEET RECORD ITH�RMATION CON CONTRACTOR
PROVIDEDBY
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
MEADOWVUE
ROADWAYGRADING, DRAINAGE AND SANITARY SEWER IMPROVEMENTS
TESC PLAN
7/25/18
FIELDBOOK:
PAGE:
DRAWING NO:
C1.02
7 43