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A PORTION OP THE NW 1/4 OF THE
NE 1/4
OF SEC.
15, TWP, 23N., RGE. 5E., W.M.
CITY
OF
RENTON,
KING
COUNTY,
WASHINGTON
1.50 GALVANIZED PIPE
(DIRECT BURY; 18-24
INCHESINTO NATIVE SO
24nx24" SIGNS TO BE
INSTALLED ON FENCE E
50-FEET (MIN. TWO (2)
TREE PROTECTION FENCE
NOT TO SCALE
aIA rvu i �v) ir_mrvRmR i
CHAIN LINK FENCE
PROTECTION MEASURES DURING CONSTRUCTION-i
PROTECTION MEASURES IN THIS SUBSECTION SHALL APPLY FOR ALL TREES THAT ARE TO BE RETAINED IN AREAS
SUBJECT TO CONSTRUCTION. ALL OF THE FOLLOWING TREE PROTECTION MEASURES SHALL APPLY:
A. CONSTRUCTION STORAGE PROHIBITED: THE APPLICANT MAY NOT FILL, EXCAVATE, STACK OR STORE ANY EQUIPMENT,
DISPOSE OF ANY MATERIALS, SUPPLIES OR FLUIDS, OPERATE ANY EQUIPMENT, INSTALL IMPERVIOUS SURFACES, OR
COMPACT THE EARTH IN ANY WAY WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED.
B.
FENCED PROTECTION AREA REQUIRED: THE APPLICANT SHALL ERECT AND MAINTAIN SIX FOOT (6') HIGH CHAIN LINK
TEMPORARY CONSTRUCTION FENCING AROUND THE DRIP LINES OF ALL RETAINED TREES, OR ALONG THE PERIMETER
OF A STAND OF RETAINED TREES. PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50') INDICATING
THE WORDS, "NO TRESPASSING - PROTECTED TREES' OR ON EACH SIDE OF THE FENCING IF LESS THAN FIFTY
FEET (50'). SITE ACCESS TO INDIVIDUALLY PROTECTED TREES OR GROUPS OF TREES SHALL BE FENCED AND
SIGNED. INDIVIDUAL TREES SHALL BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL PROVIDE
SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES.
C.
PROTECTION FROM GRADE CHANGES: IF THE GRADE LEVEL ADJOINING TO A TREE TO BE RETAINED IS TO BE RAISED,
THE APPLICANT SHALL CONSTRUCT A DRY ROCK WALL OR ROCK WELL AROUND THE TREE. THE DIAMETER OF THIS
WALL OR WELL MUST BE EQUAL TO THE TREE'S DRIP LINE.
D.
IMPERVIOUS SURFACES PROHIBITED WITHIN THE DRIP LINE: THE APPLICANT MAY NOT INSTALL IMPERVIOUS SURFACE
MATERIAL WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED.
E.
RESTRICTIONS ON GRADING WITHIN THE DRIP LINES OF RETAINED TREES: THE GRADE LEVEL AROUND ANY TREE TO
BE RETAINED MAY NOT BE LOWERED WITHIN THE GREATER OF THE FOLLOWING AREAS: (I) THE AREA DEFINED BY
THE DRIP LINE OF THE TREE, OR (II) AN AREA AROUND THE TREE EQUAL TO ONE AND ONE-HALF FEET (1-1/2')
IN DIAMETER FOR EACH ONE INCH OF TREE CALIPER. THE REVIEWING OFFICIAL MAY REQUIRE A LARGER TREE
PROTECTION ZONE BASED ON TREE SIZE, SPECIES, SOIL, OR OTHER CONDITIONS.
F.
MULCH LAYER REQUIRED: ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND EVENLY
WITH A MINIMUM OF THREE INCHES (3°) OF BARK MULCH PRIOR TO INSTALLATION OF THE PROTECTIVE FENCING.
TIVE GROUND
EXCEPTIONS MAY BE APPROVED BY THE REVIEWING OFFICIAL IF THE MULCH WILL ADVERSELY AFFECT PROTECTED
GROUND COVER PLANTS.
G.
MONITORING REQUIRED DURING CONSTRUCTION: THE APPLICANT SHALL RETAIN A PROFESSIONAL ARBORIST OR OTHER
QUALIFIED PROFESSIONAL TO PRUNE BRANCHES AND ROOTS, FERTILIZE, AND WATER AS APPROPRIATE FOR ANY
TREES AND GROUND COVER WHICH ARE TO BE RETAINED.
H.
ALTERNATIVE PROTECTION: ALTERNATIVE SAFEGUARDS MAY BE USED IF DETERMINED BY THE REVIEWING OFFICIAL TO
PROVIDE EQUAL OR GREATER TREE PROTECTION.
R=344620
CHECKED FOR COMPLIANCE
TO CITY STANDARDS
Date
Date
Date
CALL 48 HOURS
BEFORE YOU DIG
1-800-424-5555
c>3•a[ • /3
`I SCHWEEM &
® Asgomms, mac
CII SIMEl i PN=T MAMA fT
1945 SOUTH 375TH STREET Bus' (25J) 226-450
FEDERAL WAY, WA 98003 bschci►d net
CITY OF N TON
DEPARTMENT OF _IC WORKS
BECLAN
(AKA
BECLAN
PLACE)
GRADING,
EROSION
CONTROL, DEMOLITION
& TREE
RETENTION
NOTES AND
DETAILS
DESIGNED: BAS
DATE:
03/01/13
FILE NAME: 12183-C-3A
DRAWN: BAS
CHECKED: BAS
SCALE:
AS SHOWN
FIELD BOOK: PAGE:
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NO. I REVISION
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BY I APPR, I DATE I APPROVED:
DIRECTOR OF PUBLIC WORKS
SHEET: C-3A OF: 25