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GEOTECHNICAL FIELD SAMPLING FLOW DIAGRAM · DAD Report = Dredge Area Delineation Report ... and lab...
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01/23/04 SYR-D85-DJH C:20430003/cdr/20430f03.cdr Notes: DAD Report = Dredge Area Delineation Report SEDC = Supplemental Engineering Data Collection SSAP = Sediment Sampling and Analysis Program USCS = Unified Soil Classification System FIGURE 1 Perform engineering design. NO NO YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO YES YES NO YES YES START Does the SSAP provide adequate information to complete the engineering design? Is DAD Report completed and approved for candidate Phase 1 areas? Does the SEDC require test borings in candidate Phase 1 areas? Does the bathymetry affect the boring location? May triaxial or Atterberg limit testing be required due to material type? Does the SEDC require inventory of river-related infrastructure? Is the material homogenous based on visual/USCS classification of the SSAP data? Can the borings be spaced evenly (laterally) within the candidate area? Does SEDC need to be performed in the candidate Phase 1 areas with additional intrusive field work and lab testing? Are borings required in areas adjacent to candidate Phase 1 areas to determine potential dredge prism geometry? Does the SEDC require test borings in areas adjacent to candidate Phase 1 areas to determine potential shoreline slope stability? Adjust boring location to capture anomalies (not related to sediment type). Modify boring plan to place boring in areas of concern along the shoreline. Modify boring plan to establish limits of the dredge prism (possibly due to rock outcrop). Collect Shelby tube sample for potential triaxial testing; also collect samples for possible Atterberg limit testing. Modify boring termination to 25 feet below mudline. Modify boring location relative to water depth (i.e., inaccessible due to shallow water). Create a flexible SEDC program to enable the design to proceed. Space borings to capture material variation/stratigraphy. Perform desktop geotechnical analysis. GENERAL ELECTRIC COMPANY HUDSON RIVER PCBS SUPERFUND SITE SEDC WORK PLAN GEOTECHNICAL FIELD SAMPLING FLOW DIAGRAM Can sheetpile be used as a resuspension containment system based on embedment length required for sheetpile (i.e. refusal will not prohibit sheetpile to be used b/c it is below the end of the pile)
Transcript of GEOTECHNICAL FIELD SAMPLING FLOW DIAGRAM · DAD Report = Dredge Area Delineation Report ... and lab...
01/23/04 SYR-D85-DJHC:20430003/cdr/20430f03.cdr
Notes:DAD Report = Dredge Area Delineation ReportSEDC = Supplemental Engineering Data CollectionSSAP = Sediment Sampling and Analysis ProgramUSCS = Unified Soil Classification System
FIGURE
1
Performengineering
design.
NO
NO
YES
YES
YES YES
YES
YES YES
YES
NO NO
NO
NO
NO
NO
NO
NO
NOYES
YESNO
YES
YES
START
Doesthe SSAP
provide adequateinformation to complete
the engineeringdesign?
Is
DAD
Report completed
and approved for
candidate Phase 1
areas?
Does
the SEDC
require test borings
in candidate
Phase 1
areas?
Does
the
bathymetry
affect the boring
location?
Maytriaxial or
Atterberg limit testingbe required due to
materialtype?
Does
the SEDC
require inventory
of river-related
infrastructure?
Isthe materialhomogenous
based on visual/USCSclassification of
the SSAPdata?
Canthe borings
be spaced evenly(laterally) within the
candidatearea?
DoesSEDC need
to be performed inthe candidate Phase 1areas with additionalintrusive field work
and labtesting?
Areborings
required in areasadjacent to candidate
Phase 1 areas todetermine potential
dredge prismgeometry?
Doesthe SEDC
require test boringsin areas adjacent to
candidate Phase 1 areasto determine potential
shoreline slopestability?
Adjust boring locationto capture anomalies
(not related tosediment type).
Modify boring plan toplace boring in areas
of concern alongthe shoreline.
Modify boring plan toestablish limits of the
dredge prism (possiblydue to rock outcrop).
Collect Shelby tubesample for potential
triaxial testing; also collectsamples for possibleAtterberg limit testing.
Modify boringtermination to 25 feet
below mudline.
Modify boring locationrelative to water depth(i.e., inaccessible due
to shallow water).
Create a flexible SEDCprogram to enable the
design to proceed.
Space borings tocapture material
variation/stratigraphy.
Perform desktopgeotechnical
analysis.
GENERAL ELECTRIC COMPANYHUDSON RIVER PCBS SUPERFUND SITE
SEDC WORK PLAN
GEOTECHNICAL FIELD SAMPLINGFLOW DIAGRAM
Cansheetpile beused as a
resuspension containmentsystem based on embedment
length required for sheetpile (i.e.refusal will not prohibit
sheetpile to be used b/cit is below the
end of thepile)
FIGURE
2
Performengineering
design.
NO NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
START
Havethe sample
locations (forfield work)
been identified?
Dothe samples
require testing (i.e.,grain size distribution,
shear strength,etc.)?
Doesthe dredge
area containsand/gravelmaterials?
Doesthe dredge
area consist ofa uniform
material type?
Doesthe dredge
area containsilts/clays?
Doesthe
dredge areacontain
organics?
Basedon field visual
classification andadditional sampling
required (e.g., clay/siltymaterial would require
a Shelbytube)
Collect additional sampleusing the appropriatemethod as specifiedin the SEDC Work
Plan and SOPs.
Select representativesamples for testing
(approximately25% of total samples
collected for area).
Perform necessarygeotechnical testing
relative to material typebased on engineering
judgment at a minimumof 25% of the total
samples.
Modify/add samplelocations as specified
by the engineer.
Keep samples archived.
Perform SPT fieldtest and vane
shear test.
GENERAL ELECTRIC COMPANYHUDSON RIVER PCBS SUPERFUND SITE
SEDC WORK PLAN
Perform desktopgeotechnical
analysis.
GEOTECHNICAL TESTING ANDANALYSIS FLOW DIAGRAM
Notes:SEDC = Supplemental Engineering Data CollectionSOPs = Standard Operating ProceduresSPT Standard Penetration Test=
