HomeMy WebLinkAboutSW260009003'
-
0
"
VARIES
5' - 5 5/32"
FINE MESH SCREEN
1"
M
I
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OVERFLOW
SPLASH BLOCK
TYPE 1 CATCH BASIN W/
SOLID LID
6" RIGID PERFORATED PIPE
WASHED ROCK, 1-1/2"-3/4"
FINISHED/EXISTING GRADE
1'
-
0
"
2% SLOPE
6" SOLID PIPE
WASHED ROCK, 1-1/2"-3/4"
2'
-
0
"
VARIES
6" RIGID PERFORATED
INLET PIPE
WASHED ROCK,
1-1/2"-3/4" WRAPPED WITH
HEAVY DUTY LANDSCAPE
FABRIC
1'
-
0
"
6" RIGID PERFORATED
OVERFLOW PIPE
6" RIGID OVERFLOW PIPE
DIRECTED TOWARDS ROAD
AND SLOPED 2% OR MORE
68.01'
143.02'
142.05'
68.00'
SE 163RD ST
FIRE HYDRANT
EXIST. BUILDING
ROOF OUTLINE
EXIST. ROOF OUTLINE
EXIST. CONC. PAD
EXIST. DRIVEWAY TO BE USED
AS STABILIZED CONST. ACCESS
ROADWAY EDGE
ROADWAY EDGE
EXISTING ADU
BUILDING TO REMAIN
NEW ADDITION,
(HATCHED)
18
.7
8
'
30.00'
30.00'
12.00'
17.00'12.00'
2.
5
0
'
15
.
0
0
'
15.00'
x
x x x
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SILT FENCE
DOWNSPOUT
TYP.
x
x
x
x
SILT FENCE
TEMP SOIL STOCKPILE
WITH 6 MIL VISQUEEN COVER
OVERFLOW PIPE
Scale:
Project #:
Date:
Drawn by:
Checked by:
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-01
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2025-016
12/01/2025
Dan Garvida
Elias
AS NOTED
REVISIONS:
GARVIDA DESIGN
GROUP, LLC
Dan Garvida
253.332.0684
Dan.GarvidaDesign@outlook.com
https://garvidadesign.com
AD
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JAN 19, 2026 1
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C-200
DISTURBED
AREA
F
LO
W
SIMPLIFIED SITE DRAINAGE PLAN AND FLOW CONTROL BMP PLAN
DEFINITIONS:
SMALL PROJECT STORMWATER POLLUTION PREVENTION PLAN (SWPPP)
THIS PLAN IS REQUIRED FOR ALL PROJECTS WITH GREATER THAN 750 SQUARE FEET BUT
LESS THAN 7,000 SF OF LAND DISTURBING ACTIVITIES.
A FIRST GROUND DISTURBANCE INSPECTION IS REQUIRED PRIOR TO START OF WORK ON ALL SITES WITH
LAND DISTURBING ACTIVITY. SEE ESC INSPECTION PROCESS BELOW.
TEMPORARY AND PERMANENT BEST MANAGEMENT PRACTICES (BMPS) SHALL BE USED TO
ACCOMPLISH THE FOLLOWING MINIMUM REQUIREMENTS. ADDITIONAL BMPS ARE REQUIRED
WHEN MINIMUM CONTROLS ARE NOT SUFFICIENT TO PREVENT EROSION OR TRANSPORT OF
SEDIMENT OR OTHER POLLUTANTS FROM THE SITE.
-MARK CLEARING LIMITS
-DELINEATE ENVIRONMENTALLY CRITICAL AREAS
-RETAIN TOP LAYER AND NATIVE VEGETATION
-ESTABLISH CONSTRUCTION ACCESS
-PROTECT DOWNSTREAM PROPERTIES AND RECEIVING WATERS
-PREVENT EROSION AND SEDIMENT TRANSPORT FROM THE SITE
-STABILIZE SOILS
-PROTECT SLOPES
-PROTECT STORM DRAINS
-STABILIZE CHANNEL AND OUTLETS
-CONTROL POLLUTANTS
-CONTROL DEWATERING
-MAINTAIN AND INSPECT BMPS
-EXECUTE CONSTRUCTION STORMWATER CONTROL PLAN
-MINIMIZE OPEN TRENCHES
-PHASE THE PROJECT
-INSTALL PERMANENT FLOW CONTROL AND WATER QUALITY FACILITIES
•TOTAL SITE AREA: SIZE OF THE LOT, EXPRESSED IN SQUARE FEET.
•IMPERVIOUS AREA (Ai): THE TOTAL SQUARE FOOTAGE OF NEW AND/OR REPLACED
IMPERVIOUS AREA. IMPERVIOUS AREAS ARE THOSE THAT WILL NOT BE VEGETATED SUCH
AS BUILDING ROOF AREA, DRIVEWAYS, WALKWAYS, PATIOS, ETC. LABEL THESE AREAS
AS (Ai) ON THE PLAN SHEET AND NOTE THE TOTAL SQUARE FOOTAGE ON THE
COMPOST CALCULATION WORKSHEET.
•NON-DISTURBED AREA (ND): VEGETATED AREAS THAT WILL NOT BE SUBJECT TO
LAND DISTURBING ACTIVITY (SEE D) DO NOT REQUIRE SOIL AMENDMENT IF THEY ARE
FENCED AND CONTINUOUSLY PROTECTED THROUGHOUT CONSTRUCTION. THE FENCING
MUST BE IN PLACE AT THE FIRST GROUND DISTURBANCE INSPECTION. THIS WILL BE
MONITORED BY THE DPD SITE INSPECTOR. NO DISTURBANCE, INCLUDING VEHICLE
TRAFFIC OR MATERIAL STORAGE, IS ALLOWED IN THESE AREAS UNTIL FINAL INSPECTION.
LABEL THESE AREAS AS (ND) ON THE PLAN SHEET AND NOTE THE TOTAL SQUARE
FOOTAGE ON THE COMPOST CALCULATION WORKSHEET.
•OTHER (O): OTHER REPRESENTS EXISTING IMPERVIOUS SURFACE TO REMAIN, DRAINAGE
FACILITIES, ENGINEERED STRUCTURAL FILL AREAS, RAIN GARDENS, ETC. LABEL THESE
AREAS AS (O) ON THE PLAN SHEET AND NOTE THE TOTAL SQUARE FOOTAGE ON THE
COMPOST CALCULATION WORKSHEET.
•DISTURBED AREA (D): AREA (TURF AND LANDSCAPE) THAT MUST BE AMENDED WITH
A MINIMUM OF 2 INCHES OF COMPOST AND BE LOOSENED SO IT WILL PROBE TO A
DEPTH OF 12 INCHES PRIOR TO SITE FINAL INSPECTION. THIS INCLUDES AREAS
IMPACTED BY CLEARING AND GRADING, STOCKPILING, SITE ACCESS, PATHWAYS AND
MATERIALS OR EQUIPMENT STORAGE. LABEL THESE AREAS AS (D) ON THE PLAN
SHEET AND NOTE THE TOTAL SQUARE FOOTAGE ON THE COMPOST CALCULATION
WORKSHEET.
NOTE: THIS PLAN IDENTIFIES THE MINIMUM MEASURES REQUIRED; ADDITIONAL MEASURES MAY BE REQUIRED BASED ON CONSTRUCTION METHODS AND ACTUAL AREA OF DISTURBANCE.
POST CONSTRUCTION SOIL AMENDMENT IS REQUIRED ON ALL AREAS NOT COVERED BY
IMPERVIOUS SURFACE WHERE SOIL IS DISTURBED DURING CONSTRUCTION.
SOIL AMENDMENT CALCULATIONS SHALL BE SHOWN ON THE POST-CONSTRUCTION COMPOST
CALCULATION WORKSHEET.
SOIL AMENDMENT MUST PASS A 12 INCH MINIMUM PROBE TEST.
NOTES:
COMPOST SOCK
SOIL AMENDMENT
TREE & VEGETATION PROTECTION
CS
1.
2.
3
0
10' -0"
3.
2" X 2" X 3'
WOODEN
STAKE
1'
-
0
"
MI
N
.
3"
M
I
N
.
4"
M
A
X
.
CONTOUR LINE (TYP.)
10' -0" @ 30^ ANGLE
EACH
END TO PREVENT FLOW
AROUND (TYP.)
L E NG T H V A RI E S
2"X 2"X 3' WOODEN STAKE,SPACED EVERY 3' O.C. (TYP.)
COMPOST
SOCK
~ SEE NOTE 1
PROTECTE
D
AREA
DISTURBE
D
AREA
EXCESS SOCK
MATERIAL,
DRAWN
IN AND TIED
OFF
AT STAKE
(TYP.)
SPACING VARIES(TYP.) SEE NOTE 3
COMPOST SOCK SHALL BE IN ACCORDANCE WITH
STANDARD SPECIFICATION 9.14.4(9). COMPOSTSOCK SHALL BE A MINIMUM OF10" IN DIAMETEROR SIZED TO SUIT CONDITIONS AS SPECIFIED BYTHE ENGINEER.
ALWAYS INSTALL COMPOST SOCK
PERPENDICULAR
TO SLOPE AND ALONG CONTOUR LINES.
REMOVE SEDIMENT FROM THE UP SLOPE SIDE OF
THE COMPOST SOCK WHEN ACCUMULATION HAS
REACHED 1/2 OF THE EFFECTIVE HEIGHT OF THECOMPOST SOCK.
MAY BE USED IN PLACE OF FILTER FENCE FORPERMITER CONTROL.
PLAN VIEW
SECTION
DETAIL
(SHOWN AS SLOPE PROTECTION)
4.
GRASS SEED OR SOD
8"
4"
MUST BE AMENDED WITH A
MINIMUM OF 2" OF COMPOST
AND PROBE TO 12"
2"-4" ARBORIST WOOD
CHIP MULCH OR 2"-3"
COMPOST
2"
-4"
1.
2.
3.
VEG
TREE & VEGETATION FENCING AROUND
ENTIRE DRIP LINE ON PERMIT SITE.
ALTERNATIVE TREE PROTECTION, IF
APPROVED BY DPD, AS SHOWN ON SITE PLAN
4'-0
"MIN
.
MUST BE INSTALLED PRIOR TO DEMOLITION
TREE PROTECTION FENCING
1.
OR GROUND DISTURBANCE
2.KEPT IN PLACE FOR THE DURATION
OF CONSTRUCTION
3.NO SOIL DISTURBANCE OR ACTIVITY
ALLOWED WITHIN FENCED AREA, SUCH
AS MATERIAL STORAGE/STOCKPILING,
PARKING, EXCAVATION, DUMPING, OR WASHING
CANOPY DRIP
LINE
DEFINES TREE &
VEGETATION
PROTECTION
AREA
ORANGE MESH OR
CHAIN LINK
FENCE
4.MODIFICATIONS OF THESE REQUIREMENTS
BY APPROVAL OF DPD PLANNER ONLY
5.IF ROOTS GREATER THAN 2 INCH FOUND
OUTSIDE OF FENCING, PROTECT BY HAND
EXCAVATION AND, IF NECESSARY, CUT
CLEANLY AND KEEP MOIST
MINIMIZE CONSTRUCTION ZONE
VEGETATION PROTECTION
1.
2.PROTECT VEGETATION OUTSIDE CONSTRUCTION
ZONE WITH FENCING AS SHOWN
3.USE 3 INCHES OR DEEPER WOOD CHIP
MULCH OUTSIDE FENCED AREAS TO
PROTECT FEEDER ROOTS
6.USE 3 INCHES OR DEEPER WOOD CHIP
MULCH OUTSIDE FENCED AREAS TO
PROTECT FEEDER ROOTS
LINK TO MORE TREE PROTECTION INFORMATION:SYMBOL:SYMBOL:
A
A
DRAINAGE ASSESSMENT:
THIS PROJECT CONSIST OF CONSTRUCTING 1,058 SF OF 1 STORY ADDITION AND INTERIOR ALTERATION OF
AFFECTED AREAS. 1,108 SF OF NEW AND REPLACED IMPERVIOUS SURFACE WILL BE ADDED. DOWNSPOUTS WILL
BE CONNECTED TO INFILTRATION TRENCH ON SITE. EXISTING DOWNSPOUTS WILL BE CONNECTED TO NEW
INFILTRATION TRENCH AS WELL.
EROSION AND SEDIMENT CONTROL (ESC) INSPECTION NOTES:
At least three ESC inspections are required. The ESC inspections will be performed by city staffs.
The inspectors will verify if the proper installation and maintenance have been made.
.
* ESC INSPECTION 1: PRIOR TO CLEARING AND GRADING ACTIVITIES
-THE APPLICANT CALL IN AND COORDINATES WITH AN ESC INSPECTOR. THE ESC INSPECTOR
WILL OUTLINE THE EROSION AND SEDIMENT CONTROL MEASURES AND PROCESS
.
* ESC INSPECTION 2: DURING CONSTRUCTION
-THE APPLICANT CONTACTS THE ESC INSPECTOR FOR A SITE INSPECTION AFTER INSTALLING
SELECTED ESC BMPs. THE INSPECTOR CHECKS THAT ALL THE BMPs ARE INSTALLED
PROPERLY. NO CLEARING AND GRADING ACTIVITIES SHALL TAKE PLACE PRIOR TO AN
APPROVAL BY THE INSPECTOR. THE INSPECTOR MAY CONDUCT AND MONITOR THE SELECTED
TOOLS DURING CONSTRUCTION.
.
* ESC INSPECTION 3: AFTER CONSTRUCTION
-THE APPLICANT CONTACTS THE INSPECTOR FOR A SITE INSPECTION AFTER COMPLETING THE
CONSTRUCTION PROJECT. THE INSPECTOR VERIFIES THAT ANY DISTURBED SOILS ON THE SITE
ARE STABILIZED PRIOR TO OCCUPANCY
SCALE: 1/4" = 1'-0"1 INFILTRATION TRENCH - PROFILE VIEW
SCALE: 1/4" = 1'-0"2 INFILTRATION TRENCH - SECTION VIEW
•PER KING COUNTY ROAD DESIGN AND CONSTRUCTION STANDARDS (KCRDCS), DRIVEWAYS
SHALL BE PAVED TO EDGE OF R-O-W PRIOR TO INSTALLATION OF THE CONSTRUCTION
ENTRANCE TO AVOID DAMAGING OF THE ROADWAY.
•IT IS RECOMMENDED THAT THE ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE
PAD.
12" MIN.
THICKNESS
PROVIDE FULL WIDTH
OF INGRESS/EGRESS
AREA
IF A ROADSIDE DITCH
IS PRESENT, INSTALL
DRIVEWAY CULVERT
PER KCRDCS
GEOTEXTILE
4"- 8"
QUARRY
SPALLS
R=25' MIN.
100' MIN.
E X I S T I N G
R O A D
1 5 ' M I N .
NOTES:
2"X2" BY 14 Ga. WIRE OR
EQUIVALENT, IF
STANDARD STRENGTH
FABRIC USED
NOTE:FILTER FABRIC FENCES
SHALL BE INSTALLED ALONG
CONTOURS WHENEVER POSSIBLE
JOINTS IN FILTER FABRIC SHALL BE
SPLICED AT POSTS. USE STAPLES, WIRE
RINGS OR EQUIVALENT TO ATTACH
FABRIC
TO POSTS.
FILTER FABRIC
BACKFILL TRENCH WITH NATIVE
SOIL OR 3/4" TO 1-1/2" WASHED
GRAVEL
MINIMUM 4"x4" TRENCH
2"x4" WOOD POSTS, STEEL FENCE
POSTS, REBAR, OR EQUIVALENT
6' MAX.
POST SPACING MAY
BE INCREASED TO 8' IF
WIRE BACKING IS USED
2'
M
I
N
.
12
"
M
I
N
.
SILT FENCE STABILIZED CONSTRUCTION ENTRANCE
2021 KCSWDM FIGURE D.2.1.4.A2021 KCSWDM FIGURE D.2.1.3.A
APPROVAL INFORMATION SECTION
SCALE: 1" = 20'-0"3 SITE PLAN - DRAINAGE DESIGN
1
1
B2
5
0
0
6
5
0
6
_
V
2
RECEIVED
01/26/2026 striplett
BUILDING DIVISION
REVIEWED
I.Arzaga 01/28/2026
BUILDING DIVISION
THIS SET OF REVIEWED PLANS MUST BE MADE
AVAILABLE ON THE JOB AT ALL TIMES DURING
CONSTRUCTION.
DEVELOPMENT ENGINEERING
HBray 02/19/2026