6375report-12072018EarthSolutionsNWLLC
EarthSolutions
NW LLC
Geotechnical Engineering
Construction Observation/Testing
Environmental Services
1805 -136th Place N.E.,Suite 201 Bellevue,WA 98005
(425)449-4704 Fax (425)449-4711
www.earthsolutionsnw.com
GEOTECHNICAL ENGINEERING STUDY
PROPOSED RESIDENTIAL DEVELOPMENT
SOUTHWEST OF 21 AVENUE SOUTHWEST
AND SOUTHWEST 320 STREET
FEDERAL WAY,WASHINGTON
ES-6375
ST
TH
Drwn.
Checked Date
Date Proj.No.
Plate
Earth Solutions NWLLC
Geotechnical Engineering,Construction
EarthSolutionsNWLLC
EarthSolutions
NW LLC Observation/Testing and Environmental Ser vices
Vicinity Map
S.W.320th Street Plat
Federal Way,Washington
MRS
KTK
11/12/2018
Nov.2018
6375
1
NORTH
NOTE:This plate may contain areas of color.ESNW cannot be
responsible for any subsequent misinterpretation of the information
resulting from black &white reproductions of this plate.
Reference:
King County,Washington
Map 744
By The Thomas Guide
Rand McNally
32nd Edition
SITE
Plate
Proj.No.
Date
Checked By
Drwn.ByEarthSolutionsNWLLCGeotechnicalEngineering,ConstructionObservation/TestingandEnvironmentalServicesEarthSolutionsNWLLCEarthSolutionsNWLLCMRS
KTK
12/05/2018
6375
2TestPitLocationPlan S.W.320thStreetPlatFederalWay,WashingtonNORTH
0 3 0 6 0 1 2 0
Sc ale in Feet1"=6 0 '
NOTE:This plate may contain areas of color.ESNW cannot be
responsible for any subsequent misinterpretation of the information
resulting from black &white reproductions of this plate.
NOTE:The graphics shown on this plate are not intended for design
purposes or precise scale measurements,but only to illustrate the
approximate test locations relative to the approximate locations of
existing and /or proposed site features.The information illustrated
is largely based on data provided by the client at the time of our
study.ESNW cannot be responsible for subsequent design changes
or interpretation of the data by others.
LEGEND
Approximate Location of
ESNW Test Pit,Proj.No.
ES-6375,Oct.2018
Subject Site
Existing Building
TP-1
TP-2
TP-3
TP-4
TP-5
TP-6
TP-1
Remnant
Concrete
Foundation
Dilapidated
Shed
S.W. 320TH STREET
21ST AVENUE S.W.350340
330320
350
340
330
320
Drwn.
Checked Date
Date Proj.No.
Plate
Earth Solutions NWLLCEarthSolutionsNWLLC
EarthSolutions
NW LLC Geotechnical Engineer ing,C onstr uction
Observation/Testing and Environmental Services
Retaining Wall Drainage Detail
S.W.320th Street Plat
Federal Way,Washington
MRS
KTK
11/12/2018
Nov.2018
6375
3
NOTES:
Free-draining Backfill should consist
of soil having less than 5 percent fines.
Percent passing No.4 sieve should be
25 to 75 percent.
Sheet Drain may be feasible in lieu
of Free-draining Backfill,per ESNW
recommendations.
Drain Pipe should consist of perforated,
rigid PVC Pipe surrounded with 1-inch
Drain Rock.
LEGEND:
Free-draining Structural Backfill
1-inch Drain Rock
18"Min.
Structural
Fill
Perforated Rigid Drain Pipe
(Surround in Drain Rock)
SCHEMATIC ONLY -NOT TO SCALE
NOT A CONSTRUCTION DRAWING
Drwn.
Checked Date
Date Proj.No.
Plate
Earth Solutions NWLLC
Geotechnical Engineering,Construction
Observation/Testing and Environmental Services
EarthSolutionsNWLLC
EarthSolutions
NW LLC
Footing Drain Detail
S.W.320th Street Plat
Federal Way,Washington
MRS
KTK
11/12/2018
Nov.2018
6375
4
Slope
Perforated Rigid Drain Pipe
(Surround in Drain Rock)
18"Min.
NOTES:
Do NOT tie roof downspouts
to Footing Drain.
Surface Seal to consist of
12"of less permeable,suitable
soil.Slope away from building.
LEGEND:
Surface Seal:native soil or
other low-permeability material.
1-inch Drain Rock
SCHEMATIC ONLY -NOT TO SCALE
NOT A CONSTRUCTION DRAW ING