HomeMy WebLinkAboutCAP 2012-10-22 Item 2C - Supplemental Agreement #1 - Duwamish Gardens with JA Brennan AssociatesCity of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
TO: Mayor Haggerton
Community Affairs and Parks Committee
FROM: Bob Giberson, Public Works Director
By: Ryan Larson, Senior Engineer
DATE: October 19, 2012
SUBJECT: Duwamish Gardens
Project No. 90630102, Contract No. 12 -007
Supplemental Agreement No. 1
ISSUE
Approve Supplemental Agreement No. 1 to Contract No. 12 -007 with J. A. Brennan Associates.
BACKGROUND
In February 2012, the City entered into a consultant agreement with J.A. Brennan Associates for
the design of the Duwamish Gardens project. An early task of this agreement was to review the
site for evidence of cultural and historic resources. The initial investigation excavated a series of
narrow probes throughout the site and the material was sent to a lab for analysis. Several of the
samples revealed the presence of organic material which can be an indication for historic
resources.
DISCUSSION
The Army Corps of Engineers reviewed the analysis as part of a future permit and is requiring a
more detailed site assessment to further investigate potential impacts to cultural resources. The
consultant worked with the Corps and developed a plan to further study the site. This additional
analysis will include excavating 16 trenches 3 feet wide by 6 feet deep and of variable lengths.
Sediments will be excavated in thin lifts and will be laid out for archaeological inspection and
testing.
Fiscal Impact
This excavation and testing is beyond the initial scope of the consultant's contract and is
required prior to developing a final site design and moving the project forward. The cost for this
additional item is $91,341.80. The current agreement with J.A. Brennan is $316,066.00 and with
this supplement, the new total will be $407,407.80. With the Proposed 2013 CIP, there is
$410,000.00 budgeted in design. Additional grant funding is available through King County
Flood Control District for $500,000 (presented separately tonight) and this grant allows funding
for the additional cultural resources work as well as the demolition of structures and project
construction.
RECOMMENDATION
Approve Supplemental Agreement No. 1 with JA Brennan Associates for additional excavation
work in the amount of $91,341.80.00 and consider this item at the November 13, 2012
Committee of the Whole and subsequent November 19, 2012 Regular meetings.
Attachments: Page 65, Proposed 2013 CIP
Supplemental Agreement No. 1
WAPW Eng \PROJECTSW- DR Projects \Duwamish Gardens 06 -DR02 (90630102) \Design \INFO MEMO Design Supplement 1.docx 21
22
CITYOFTUKWILACAPITALPROJECTSUMMARY
to
2018
2013
ProjectNo.90630102
PROJECT:
Purchaseandrestoresiteasasalmonestuaryandpassive.park.
DESCRIPTION:
ThisprojectisincludedintheWRIA9SalmonRecoveryPlanseffortstoacquireandrestore20-acres
JUSTIFICATION:
withintheDuwamishestuary.
Propertyacquiredinlate2008.Designphasebeganin2012.Constructionscheduledfor2015,grant
STATUS:
dependent.
Withanewpassivepark,additionalmaintenancewillbeneeded.
MAlNT.IMPACT:
DesignfundingfromStateSalmonRecoveryBoard(SRFB),andKingConservationDistrict(KCD).
AcquisitiongrantsincludedSRFB,WRIA9KingConservationDistrict,KCConservationFutures,WA
COMMENT:
StateAquaticLandsandWAStateEarmark.
ThroughEstimated
FINANCIAL
2018BEYONDTOTAL
20162017
20142015
201120122013
EXPENSES
410
110270
30
Design
2,116
2,116
Land(RIW)
310
50
10250
Const.Mgmt.
2,577
701,750750
7
Construction
05,413
800000
1103502,000
TOTALEXPENSES2,153
FUNDSOURCES
2,888
350370
2,058110
AwardedGrant
2,250
1,500750
ProposedGrant
0
MitigationActual
0
MitigationExpected
275
130500000
CityOper.Revenue9500
00005,413
2,1531103502,000800
TOTALSOURCES
2013-2018CapitalImprovementProgram
24
SUPPLEMENTAL AGREEMENT NO.1
to
CONSULTANT AGREEMENT NO. 12 -007
THIS SUPPLEMENTAL AGREEMENT is entered into between the City of Tukwila,
Washington, herein -after referred to as "the City and J.A. Brennan Associates, hereinafter
referred to as "the Consultant in consideration of the mutual benefits, terms, and conditions
hereinafter specified.
The City desires to supplement the agreement entered into with the Consultant and executed on
February 3, 2012, and identified as Agreement No. 12 -007: All provisions in the basic
agreement remain in effect except as expressly modified by this Supplement.
The changes to the agreement are described as follows:
1. Scope of Services, is hereby changed to include reimbursement for direct expenses and costs
for the development and execution of the Cultural Resources Site Delineation and
Geotechnical and Environmental Support services.
See Exhibit A, attached with additional scope of services.
2. Payment, is hereby changed to include an additional $91,341.80 for this additional scope of
services. The maximum amount payable under this agreement as supplemented inclusive of
all fees and other costs shall not exceed $407,407.80 without express written modification of
the Agreement signed by the City.
See Exhibit B, attached, with additional fees for added scope of work.
3. Time for Performance, is amended to include an additional 120 days for completion of
this additional scope of services. The required completion date for all work under this
agreement as supplemented is now June 6, 2013.
DATED this 1 day of r-C- TrQof—�-L 2012.
CITY OF TUKWILA
Jim Haggerton, Mayor
CONSULTANT
By:
Printed Name: \-)Av''1 7 A Uf- [4 MN
Title: _PHtiGte6\,
25
26
a. brenan
October 16, 2012
as rrtc
Landscape Architects Planners
100 S. King Street, Suite 200, Seattle, WA 98104
t.206.583- 0620 f. 206.583.0623
Exhibit A www.jabrennan.com
Scope of Work Additional Services for Cultural Resources Site Delineation and
Geotechnical and Environmental Support
Duwamish Gardens
Prepared For:
Ryan Larson, the City of Tukwila Public Works Department
Project Description
The project involves design and permitting services for the construction of estuarine fish habitat on a 2.16
acre City owed site. A conceptual site plan has been developed by the WDFW and calls for the
excavation of 55,000 cubic yards of material to establish approximately 2 acres of shallow water mudflat
and marsh habitat and approximately 0.8 acres of uplands planted with native vegetation.
This extra services scope of work is to provide an Archaeological Site Delineation as requested by the
U.S. Army Corps of Engineers "the Corps the lead consulting agency for compliance with Section 106
of the National Historic Preservation Act "Section 106 This extra services scope also includes
additional groundwater monitoring.
Task 1 Administration
Administration tasks include meeting coordination, scheduling, contract administration and subconsultant
administration costs and expenses.
Task 2 Cultural Resources Site Delineation
Initial Cultural and Historical Resource Investigations (Task 2.2 of the Contract) has been completed. At
a meeting on July 12, 2012, it was determined by the Corps that further investigations and delineation of
cultural resources at the site would be required to make a Section 106 determination. Subsequently, ESA
Paragon Associates, in collaboration with the Corps and the Muckleshoot Tribe and other stakeholders,
prepared a site delineation plan, which proposes a series of trenches and test pits throughout the property
to ascertain the extent of cultural resources.
See Attachment A for a detail on this scope of services and products. J.A. Brennan Associates will
provide client agency coordination, attend a site meeting and review ESA Paragon's Technical Report.
Task 3 Geotechnical and Environmental Support
Initial Hydrogeologic Assessments (Task 2.3.7 of the Contract) have been completed. Subconsultant,
Shannon &Wilson installed vibrating wire piezometers at three locations in order to measure fluctuating
groundwater conditions. Data was recorded between June and August, 2012. This additional service
request includes additional groundwater monitoring though the winter and spring 2013, when rainier
conditions are expected that could provide informative groundwater level data.
City of Tukwila Duwamish Gardens Scope of Work
27
See Attachment B for a detail on this scope of services and products. J.A. Brennan Associates will
provide client coordination and review of groundwater monitoring data reporting.
Assumptions
1. This scope of work does not include data recovery work or work associated with mitigation
requirements that may be determined by the Corps.
2. See Attachment A for further assumptions.
City of Tukwila Duwamish Gardens Scope of Work
5309 Shilshole Avenue NW www.paragonresearch.net
E�,,.. A Paragon Suite 200
Seattle, WA 98107
206.789.9658 phone
206.789.9684 fax
September 11, 2012
Mike Perfetti
J.A. Brennan Associates
VIA email (mike cr jabrennan.com)
Subject: Duwamish Gardens Archaeological Site Delineation
Dear Mike:
Attached is ESA Paragon's scope of work and cost estimate for the Duwamish Gardens Archaeological Site
Delineation for 45 -KI -703. The scope (Attachment A) and cost estimate (Attachment B) have been developed
based on the project approach set forth by USACE and the Delineation Plan prepared for the project.
The scope is phased to include a program of archaeological trenching (Task 2) with a follow -on program of
archaeological test excavations (Task 3). At the completion of Task 2, ESA Paragon will provide an interim
memorandum of results (Task 2.1), and, if requested, participate in an on -site meeting of stakeholders to
examine trench exposures (Task 2.2). Initiation of Task 3 will be contingent upon a decision by the City to
continue with the project based upon Task 2 results. Please note that if the City determines it is not feasible to
continue with the project, we will still need to conduct tasks to document the site and prepare the artifacts for
curation. Further, even if we conduct test excavations, it is possible that additional investigations not included in
this scope of work may be determined necessary during consultation.
Although the cost estimate does not include the curation fees; current pricing for curation at the Burke Museum
may be found at http// www .burkemuseum.or_/pub /09curation brochure.pdf Based on the assumptions about
collection volume included in the cost proposal curation fees would be expected to be approximately $8,100.
Please contact me with any questions about this scope of work and cost proposal. We appreciate the opportunity
to participate in the creation of Duwamish Gardens.
Sincerely,
Chris Lockwood
Principal Investigator
Northwest Cultural Resources
29
wt
'.A AParagon
Attachment A
Scope of Work
Duwamish Gardens
Site Delineation
Project Description: The City of Tukwila is proposing to enhance fish and riparian habitat along the right
(north) bank of the Duwamish River, in Tukwila, King County, Washington. Conceptual designs for the project
will require removal of existing buildings and structures, excavation, and alteration of vegetation. The USACE
has requested site delineation for 45 -KI -703, a preeontact archaeological site that extends into the project Permit
Area, as well as other archaeological components that may exist within the Permit Area. ESA Paragon has
developed a Site Delineation Plan which outlines the procedures to be followed during site delineation activities.
Scope of Work: The Scope of Work to be conducted by ESA Paragon includes seven tasks:
Task 1. Client and Agency Coordination. Under this task, ESA Paragon will assist in coordinating
between City of Tukwila, US Army Corps of Engineers, the design team, DAHP, King County Historic
Preservation Program, and the interested tribes. ESA Paragon will also maintain project schedule and
budget.
Task 2. Archaeological Trenching. ESA Paragon will direct archaeological trenching of 17 trenches to be
completed by a City supplied excavator. Trenches will be excavated to a maximum depth of 2 meters (6
feet), and may be internally stepped to provide safe access. ESA Paragon will document trenches using
standard archaeological methods. Opportunistic screening (1/8" mesh) and hand sampling may be
conducted in areas containing artifacts, features, or other cultural evidence.
Task 2.1. Interim Report of Results: ESA Paragon will provide a brief report of Task 2 results within
3 days of completion of Archaeological Trenching.
Task 2.2. Stakeholder Site Visit: ESA Paragon will participate in a site visit by stakeholders to
examine exposed trenches.
Task 3. Test Excavations. If, based on the results of Archaeological Trenching (Task 2), the City of
Tukwila opts to proceed with the project, ESA Paragon will then hand excavate up to 10 test excavation
units. Units will be 1 m wide by 1 m long, and will extend to 1.3 m below ground surface or 30 cm beyond
sterile, whichever is deeper, and may require safety benching. It is expected that test units will be oriented
along trenches. Test unit walls will be inspected, photographed, and stratigraphic profiles drawn. All
material will be screened through 1/8" mesh. Artifacts and samples will be collected for analysis and
curation.
Task 4. Artifact Analysis. Functional, typological, and preliminary chronological analysis will be
conducted for all artifacts. No specialists will be retained and no samples will be dated.
Task 5. Technical Report. ESA Paragon will summarize the findings of our work and recommendations
in a comprehensive Technical Report. If Task 3 is conducted, the Technical Report will include the results
of this work; otherwise, the Technical Report will only synthesize the Interim Report (Task 2.1) with
results of any Artifact Analysis (Task 4). The Technical Report will meet the current SHPO standards for
cultural resources assessment including making recommendations for mitigating or minimizing potential
adverse effects, if warranted by the results of the field work. ESA Paragon will submit a draft report (PDF
format) for review by the Client and selected stakeholders. Once comments are received, ESA Paragon
31
Paragon
Attachment A
Scope of Work
Duwamish Gardens
Site Delineation
will submit four (4) bound copies and two (2) electronic copies (in PDF format) as the final deliverable.
Client will be responsible for distributing the technical report to appropriate stakeholders.
Alternatively, if it is determined that data recovery will be conducted as mitigation to enable to project to
proceed, the Technical Report would be prepared and structured as a draft chapter for the anticipated Data
Recovery report, rather than as a stand -alone report. In this case, no hard copies will be distributed.
Task 6. Update Site Form /New Site Form(s). ESA Paragon will complete an archaeological site form
update for 45 -KI -703, as required by DAHP. One new archaeological site forms will be completed if
historic period components that are not temporally associated with precontact occupation at 45 -KI -703 are
encountered during fieldwork.
Task 7. Curation Preparation. ESA Paragon will prepare records, photographs, and data for curation,
meeting the Burke Museum's curation requirements; ESA Paragon assumes that project records,
photographs, and data will not exceed 20 linear inches of curation space. If test excavations are conducted,
and artifacts or samples requiring curation are collected, ESA Paragon will prepare artifacts /samples for
curation, meeting the Burke Museum's curation requirements; ESA Paragon assumes that the collection
will consist of not more 300 unique catalog numbers, and occupy not more than 4 cubic feet. This cost
estimate does not include Burke Museum curation fees.
Deliverables: ESA Paragon will prepare an Interim Report of Results (Task 2.1), and draft and final Technical
Report (Task 5; see Data Recovery exception above) that meet DAHP standards. ESA Paragon will prepare an
archaeological site form update, and up to one (1) new archaeological site /isolate forms, as necessary. ESA
Paragon will prepare associated records (and artifacts /samples, if collected) to meet Burke Museum curation
standards.
Schedule: ESA Paragon will provide a schedule following receipt of a Notice to Proceed.
Assumptions:
All work will be conducted under the provisions set forth in the Site Delineation Plan.
Per the Site Delineation Plan, the focus of this work will be delineation of prehistoric archaeological site
45 -KI -703; one trench will be excavated to investigate a depression near the historic bunkhouse.
ESA Paragon will not conduct tasks with aboveground resources under this work order.
City will provide excavator and operator (3 days of trenching, plus I day of backtilling at completion of
fieldwork); excavator to have 3 -4 foot wide, smooth "ditch" bucket (no teeth), and be capable of
excavating to minimum of 2 meters (6 feet) below ground surface. The excavator may be tracked or
wheeled, as available. City to furnish all safety posts /markers (e.g., pylons, candlesticks) to mark
trenches /test excavations.
Trenches may be left open for stakeholder inspection until completion of Task 2 or Task 3, whichever
pertains. Archaeological deposits exposed in profiles or floors will be covered with geotextile cloth or
similar protective material prior to backfilling; an archaeologist will be present during backfiliing.
Under Task 2, 17 trenches will be excavated, requiring three (3) days of mechanical trenching.
32
NS �kParagon
Attachment A
Scope of Work
Duwamish Gardens
Site Delineation
Under Task 3, up to 10 archaeological test units will be excavated. Each test unit may take up to two (2)
days to excavate by two (2) archaeologists (4 person days total), including any necessary benching.
Task 3 will only be completed if directed by the City following completion of Task 2.
Actual costs for Tasks 4 -7 will vary based upon results of Task 2 and Task 3 (if conducted).
Under Task 7, cost estimate assumes that project records, photographs, and data will not exceed 20 linear
inches, and artifacts /samples will not exceed 300 unique catalog numbers occupying not more than 4
cubic feet.
One set of consolidated comments on the draft Technical Report will be provided to ESA Paragon by the
Client.
Cost Proposal: ESA Paragon has estimated the cost for the Duwamish Gardens Site Delineation based on the
hours and rate schedule included in Attachment B. ESA Paragon estimates that the sum of $71,846 will be
required to complete Tasks 1 through 7 as described above. Extra services will be initiated by ESA Paragon only
after agreement by both ESA Paragon and the Client concerning revisions to the scope of work and additional
compensation, if necessary. This scope and cost estimate does not include preparation of a Supplemental
Treatment Plan, or conducting data recovery. This scope and cost estimate does not include Burke Museum
curation fees.
33
34
esa paragon
budget proposal
duwamish gardens site delineation
36
ARCHAEOLOGICAL TESTING PLAN DUWAMISH GARDENS
Prepared by Chris Lockwood, Ph.D., ESA Paragon
At the direction of the US Army Corps of Engineers, ESA Paragon has developed this archaeological
testing plan for the City of Tukwila's Duwamish Gardens project. Archaeological survey and
archaeological monitoring of geotechnical geoprobing suggests that archaeological remains associated
with precontact site 45 -KI -703 extend into the Duwamish Gardens Permit Area. The Permit Area also has
a lengthy history of use as a farmstead and residence since the 1880s.
Archaeological testing is being conducted for the purposes of. 1) delineating the extent of archaeological
remains associated with archeological site 45 -KI -703, and 2) assessing the potential of these remains to
address research questions relevant to 45 -KI -703 as set forth by Blukis Onat et al. (2010:33 -36). The
testing efforts will also be used to determine if there is a separate historic archaeological site related to the
historic farm.
FIELD METHODOLOGY
Testing will commence with mechanical trenching, followed by excavation of 8 -10 controlled test units;
the exact number and location of test units will be determined based upon the results of trenching.
Trenching
ESA Paragon will direct excavation of 12 -16 backhoe trenches across the Duwamish Gardens Permit
Area (Figure 1). Trenches will be 1.5 m wide x 1.5 in deep, and of variable length. Sediments will be
excavated in thin lifts, and spoils will be laid out for archaeological inspection. Trench walls will be
inspected, photographed, and stratigraphic profiles drawn. Opportunistic screening (1/8" mesh) and hand
sampling may be conducted in areas containing artifacts, features, or other cultural evidence.
Trenches will be oriented to evaluate the stratigraphy that has developed from the river towards the higher
elevation riverbank in order to expose the greatest stratigraphic variability and to provide greater
environmental information. Because natural depositional units would be oriented parallel to the river, the
trenches will be oriented perpendicular to expose these in cross section. Other trenches will be oriented
parallel to the river to test the hypothesis that there is a discernible change in stratigraphy as highlighted
in the organic matter testing.
One trench will be excavated to specifically investigate the depression in front of the bunkhouse building.
Test Units
Based on the results of trenching, ESA Paragon will hand excavate 8 -10 test units in locations estimated
to have the highest potential to address research questions set forth in Blukis Onat et al. (2010:333 -348).
Units will be lm wide x 1 in long, and of variable depth. Excavation will be conducted by natural
stratigraphic layer; natural stratigraphic layers thicker than 10 cm will be subdivided into arbitrary 10 cm
levels. Test units will extend to 1.3 in below ground surface or 30 cm beyond sterile, whichever is deeper,
and may require safety benching. Test unit walls will be inspected, photographed, and stratigraphic
profiles drawn. All material will be screened through 1/8" mesh; artifacts and samples will be collected
for analysis and curation.
45 -KI -703 Testing Plan Page 1
July 2012
37
FigureI.ProposedTrenchingPlanatDuwamishGardens;notethattestunitlocationswillbedetermined
basedontrenchingresults.
EXPECTEDDATACATEGORIES
Prehistoricarchaeologicalremainsrecoveredduringtestinganddatarecoveryat45-KI-703includeflaked
stoneandgroundstonetools,animalandfishbonesandshell,botanicalremains,pollen,firemodified
rock,firefeatures,postmold,depressions/pits,andpebble/rockconcentrations.Thearchaeologicalsiteis
characterizedbyorganic-richsandlayers.
Historicarchaeologicalmaterialsinarchaeologicaldepositsmayinclude:foodbonefromprocessingand
consumptionofmammal(includingdomesticates),avifauna(includingdomesticates),andfish;
manufactureditems(e.g.,glass,ceramic,metal,wood)associatedwithdomesticlifewithinresidences;
tools,equipmentand/ormaterialsassociatedwithagriculture;andfoundations,postmolds,pits,privies,
oxidizedmatrices,andothersoilstainsassociatedwithresidentialandagriculturaluse.
ARTIFACTANDSAMPLECOLLECTIONANDPROCESSING
ArtifactsencounteredduringDuwamishGardensarchaeologicaltestingareplannedforcurationatthe
BurkeMuseumofNaturalHistoryandCultureinSeattle.
Artifactswillbecollectedandbaggedininertpolyethylene4milziptopbagswithexactproveniences
recorded.ArtifactswillbetransportedtotheESAParagonarchaeologicalanalysislaboratoryfor
description,photography,illustration,andanalysis,andpreparedforcuration.Analyseswillbe
conductedconcurrentlywithfieldwork.Allanalyseswillbecompletedwithin30daysoffieldwork.
Page2
45-KI-703TestingPlan
July2012
38
ANALYTICAL TECHNIQUES
Analyses of artifacts and samples collected during archaeological testing at Duwamish Gardens will be
conducted for the purpose of assessing the potential to address research domains relevant to 45 -KI -703 as
set forth by Blukis Onat et al. (2010:33 -36). If investigations continue into data recovery, additional
analyses of materials collected during test excavation may be needed.
Lithic Artifacts
Lithic artifact classification would include assessment of materials used for stone tools, techniques used
to manufacture stone artifacts, and functions of stone tools based on use -wear patterns and traditional
formal typologies. Stylistic analyses of projectile points and other temporally sensitive stone tools provide
chronological information. (If investigations continue into data recovery, trace element or other sourcing
techniques may be used to estimate the source lithic raw materials, and to infer mechanisms that operated
in the economic system to obtain raw materials, such as long distance trade).
Mammal, Fish, and Bird Bone
Bone analysis would include weights and counts (NISP), identification to taxonomic class (e.g., fish, bird,
or mammal), assessment of bone breakage and burning patterns to infer processing techniques and post
depositional changes. (If investigations continue into data recovery, additional analysis may include
identification to lower taxonomic levels and demographic analysis (age /sex) to make inferences regarding
seasonality and diet).
Shellfish
Shellfish analysis would include bulk weights, counts (NISP) and relative abundance of fragments by size
class (1", ''/2 o" and 1/8 (If investigations continue into data recovery, additional analyses may
include identification of hinges and spines to lowest possible taxonomic level; measurement of hinge size
to estimate variation in sizes of shellfish collected over time; and estimation of hinge /shell weathering).
Botanical Remains
Botanical analyses would include bulk weights of material, and estimation of relative abundance of wood
versus other botanical remains. (If investigations continue into data recovery, additional analyses may
include identification of samples to lowest possible taxonomic level, estimation of seasonality, inferences
of kinds of activities associates with different botanical materials such as use for fuel, food, or
technology, and evidence for post- depositional disturbance of archaeological sediments).
Perishable Artifacts
Perishable artifacts such as basketry or matting may occur in archaeological deposits. Field and laboratory
personnel would stabilize, clean, and store perishable materials following standard archaeological
procedures. Analysis would include assessment of artifact function. (If investigations continue into data
recovery, additional analyses may include identification to lowest possible taxonomic level and
estimation of seasonality).
Fire Modified Rock
Fire modified rock would be analyzed, using a classification system including material type,
discoloration, and breakage patterns. Samples of fire modified rock from bulk samples would be
classified, measured, weighted and counted.
45 -KI -703 Testing Plan
July 2012
Page 3
39
Utilized Bone and Shell
A functional classification system will be used to categorize shaped bone and shell artifacts into types that
reflect probable uses, uses such as fishing (e.g., fishhooks and harpoons) and woodworking (e.g., chisels
and wedges).
Sediment Samples
Soils data (e.g., soil pH, organic matter content, grain -size distribution, and other attributes) may be used
to infer past geomorphic conditions and post depositional processes.
Radiocarbon Analysis
Samples of charcoal, wood, and /or shell may be analyzed by a professional radiocarbon dating laboratory
to provide age determinations for samples in radiocarbon years. AMS radiocarbon dating will be
preferred over conventional radiocarbon dating. Samples will not be aggregated as a method for
obtaining sample sizes sufficient for radiocarbon dating. Radiocarbon age determinations will be
calibrated to correct for temporal variation in atmospheric 14C. If shell samples are submitted for
radiocarbon analysis, additional age corrections may be required to account for variation in the carbon
content of marine water.
Thermoluminescence Analysis
Samples of fire modified rock may be analyzed at a specialized archaeological laboratory for
thermoluminescence analysis. Age determinations from thermoluminescence analysis may be used to
provide independent chronological control to corroborate age determinations from radiocarbon analysis.
Historic Ceramics
Analyses of ceramics will include assessment of form and function, analysis of style and manufacturing
technique, and determination of manufacturer and date of manufacture through seriation and analysis of
makers' marks, stamps, or other evidence.
Historic Glass
Analyses of vessel glass and other "non -flat" glass will include assessment of form and function, analysis
of style and manufacturing technique, and determination of manufacturer and date of manufacture
through seriation and analysis of makers' marks, stamps, or other evidence. "Flat" or window glass will
be characterized (modern or historic), recorded, dimensions (area and thickness) recorded with an
estimate of panes, but not further analyzed. If possible we will correlate the flat glass with a specific
building.
Historic Metal
Analyses of metal artifacts will include assessment of form and function, analysis of style and
manufacturing technique, and determination of manufacturer and date of manufacture through seriation
and analysis of makers' marks, stamps, or other evidence.
Other Historic Artifacts
Other types of historic artifacts will be analyzed using generally- accepted methods as appropriate.
CURATION
Artifacts collected during archaeological test excavations at Duwamish Gardens will be curated at the
45 -KI -703 Testing Plan
July 2012
Page 4
ON
Burke Museum of Natural History and Culture, in Seattle, WA, which has agreed to act as repository for
collections, records, photographs and data from the Duwamish Gardens project. The collections from
2005 excavations at 45 -KI -703 are curated at the Burke. Collections will be curated to meet the Burke's
Curation Guidelines.
RESEARCH DESIGN
Archaeological testing is being conducted to determine the extent, nature, and age archaeological remains
at Duwamish Gardens for the purpose of assessing whether deposits have the potential to address and
provide new information regarding the following research domains previously developed by Blukis Onat
et al. (2010:33 -36; see scanned attachment) for 45 -KI -703:
Research Domain 1: Site Formation Processes
Research Domain 2: Resource Specialization
Research Domain 3: Environmental Enhancement and Settlement System Development
Research Domain 4: Artifact Types and Distributions, Trade, and Regional Contacts
Research Domain 5: Ethnographic Correspondence
Because the Duwamish Gardens archaeological testing will be conducted in proximity to historic
agricultural and residential areas where there is the potential to encounter historic archaeological remains,
and because no historic research domain was developed previously, it is anticipated that an additional
research domain related to historic landuse will be developed, and archaeological testing results evaluated
against this additional research domain. However, we expect that any historic archaeological remains will
be recorded as a separate site.
REPORTING
Reporting will occur after analysis of fieldwork has been completed. A summary technical report will
present all data from the archaeological testing, evaluate the potential for additional archeological
deposits and their ability to address the various relevant research domains. A site form update for 45 -KI-
703 would be prepared and included as an appendix to the report. If a historic site is identified it will be
recorded as well.
REFERENCES
Blukis Onat, Astrida, Philippe D. LeTourneau, and Timothy L. Cowan
2010 3. Research Design and Data Recovery Investigation Methods. In The Duwamish River Bend Site
Data Recovery at 45 -KI -703, edited by Astrida Blukis Onat, pp.31 -50. Prepared by BOAS, Inc., Seattle.
Submitted to Sound Transit. On file, ESA Paragon, Seattle.
45 -KI -703 Testing Plan
July 2012
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41
W
45KI703 DATA RECOVERY REPORT
Data recovery excavations at 45KI703 addressed research domains outlined in the ARMT
Blukis Onat et al. 2004:53 -55). Research questions were adapted for the Supplemental
Treatment Plan (LeTourneau and Blukis Onat 2004b) (Appendix B). The five prehistoric
research domains considered: (1) environmental adaptation and landform use; (2) resource
specialization; (3) environmental enhancement and settlement system development; (4) artifact
types and distributions, trade and regional contacts; and (5) ethnographic correspondence.
The research questions that were part of the data recovery plan at site 45KI703 are itemized
below in the context of the five research domains. The complete text is provided in LeTourneau
and Blukis Onat 2004b (Appendix B).
Within each research domain, the questions are grouped by topic. Not all questions listed could
be addressed at 45KI703, nor are they exhaustive. They are suggestions of topics that might be
addressed at the site, not predictors of what would be found. Research questions that arose in the
course of investigations are presented and discussed in SECTION 15.
3.2.1. Environmental Adaptation and Landform Use
Site Formation Processes at 45KI703
1. How have geological processes impacted the landform on which site 45KI703 is located?
2. What evidence of flood deposits is present at 45KI703?
3. What is the substrate on which site 45KI703 was established?
4. What evidence is present to indicate that geological processes caused site 45KI703 to be
abandoned?
5. How did geological processes influence site occupation?
Site Formation Processes at Other Sites in the Region
1. How do the cultural changes and environmental circumstances at 45KI703 compare with
those at other sites in the region?
2. What evidence for change in regional prehistoric cultural systems can be derived from
the site?
3. What are the similarities and differences between site 45KI703 and Allentown
(45KI431)?
Impact of Tectonics on site 45KI703
1. What kinds of evidence are present testifying to the impact of earthquakes on peoples and
settlements?
2. What was the impact of the uplift associated with the magnitude 7 earthquake that shook
the region ca. 1000 -1100 BP?
3. If the Duwamish River floodplain was uplifted, what were the resulting changes to local
drainage patterns, erosion and deposition processes, vegetation types, and emergent
terrestrial surfaces?
4. How did these changes impact people and settlements?
5. What evidence is there for other tectonic events at 45KI703? What kinds of events are
represented at the site?
6. How did tectonic events affect site 45KI703?
33
43
45KI703 DATA RECOVERY REPORT
Resource Specialization
Ethnographic Model for 45KI703 Resources and Features
1. Is the currently used ethnographic model of hunters, gatherers, and fishers appropriate for
interpreting cultures in the site region?
2. What other models can be developed from ethnographic resources that better integrate
archaeological data and the basic elements of Pacific Northwest culture?
3. It appears there may be a structural feature at site 45KI703. Does the feature represent a
house?
4. If a house, is the excavation inside or outside the dwelling?
5. Does the house appear to be permanent or temporary?
6. What is the evidence for duration of occupation? Intensity of occupation?
Ethnographic Modeling at Other Sites in the Region
1. What kinds of archaeological sites are associated directly with the Tukwila Formation
and the floodplain promontories associated with the Duwamish Epic of the Winds?
2. The Allentown site (45KI431) has been defined as a fishing camp. Is site 45KI703 a
fishing camp also?
3. What other interpretations can be derived from materials at site 45KI703?
4. Would these possibly warrant revisions to the interpretations of site 45KI43I?
Invertebrates at 45KI703
1. What is the nature of evidence for pre -2000 BP shell midden sites in the region? Are
there shell midden sites in the region along ancient channels of the Duwamish River that
have been covered by alluvial or estuarine deposits?
2. How old is site 45KI703?
3. How much shell is present at site 45KI703?
4. What is the evidence that site 45KI703 is a degraded shell midden?
5. Is shell preservation at 45KI703 a factor of shell abundance or a factor of soil conditions?
6. There is greater abundance of shell at the Duwamish No. 1 site; how else is site 45KI703
different from it?
7. How are these two sites similar?
Vertebrates at 45KI703
1. How did fishing technology at the site change through time?
2. What are the regional differences in access to various fish species?
3. What are the changes through time in species utilized?
4. What is the evidence of differential access to marine, anadromous, and fresh -water
species at sites in various geographic locations?
5. What is the evidence for fishing at site 45KI703?
6. Is there evidence of change in fishing over time?
7. Are different fish species represented at different times?
8. Is there a relationship between fish species represented and evidence for landform
alterations?
34
45KI703 DATA RECOVERY REPORT
3.2.3. Environmental Enhancement and Settlement System Development
Site Chronology and Site Function
1. Is there evidence at the site for the chronological sequence of Duwamish River delta
progradation?
2. Where was the mouth of the Duwamish River at the time of site occupation?
3. Is there a chronological sequence of occupation and sediment deposits at 45KI703, or is
the site the result of a single use event?
4. What is the evidence in the stratigraphic sequence at site 45KI703 for habitat alterations
during the time the site was occupied?
5. Where was site 45KI703 in relation to delta and tidal marsh?
Subsistence and Settlement at 45KI703 and Other Sites in the Region
1. What evidence is present for changing subsistence /settlement patterns?
2. How can such changes be linked to region -wide shifts in subsistence organization and
settlement type? When did the changes occur?
3. What is the degree of bone and shell preservation?
4. How do the bone and shell add to evidence from tools to determine subsistence patters?
5. What is the evidence for changes in subsistence patterns? When did the changes occur?
6. How are these changes reflected in nearby sites (45KI431 and Duwamish No. 1)?
3.2.4. Artifact Types and Distributions, Trade, and Regional Contacts
Lithic Technology
1. What differences are evident from site to site with respect to technological organization?
2. Are there differences in technological organization in the lower Duwamish River valley
based on environments (e.g., littoral or riverine settings)?
3. What is the evidence for technological organization of lithic artifacts at the site?
4. What kind of information on technological organization can be derived from
relationships between artifacts and features?
5. How does the technological organization at 45KI703 compare with that at other nearby
sites (45KI431 and Duwamish No. 1)?
6. Where do the lithic materials present in the site come from?
3.2.5. Ethnographic Correspondence
Site 45KI703 and Epic of the Winds
1. Site 45KI703 is adjacent to one of the Tukwila Formation promontories associated with
the Duwamish Epic of the Winds. What was the nature of Duwamish use of the hills
located at South Boeing Access Road?
2. Were these culturally important places actually occupied?
3. What kinds of activities took place at these locations?
4. Are fragments of the Tukwila Formation present at 45KI703?
5. If so, can these be considered evidence for an association between site 45KI703 and the
Epic of the Winds promontories?
35
45
45KI703 DATA RECOVERY REPORT
Settlement Interdependence
1. Did Duwamish villages participate in an interdependent economic system where each
village's ecological or economic strengths resulted in a surplus that was traded to other
villages?
2. How did downstream villages interact with those upriver?
3. Did the trade networks linking Duwamish River villages also extend to other parts of
Puget Sound or to eastern Washington?
4. What evidence is there that the practices evident at 45KI703 are also described in the
ethnographic record of Duwamish people?
5. Is there oral history evidence that can explain features and artifacts found in the site?
3.3. Data Recovery Management and Methods
Fieldwork safety and security, archaeological excavation strategies, and laboratory processing
methods for data recovery investigations at site 45KI703 are detailed herein. The methods used
were based on those that had been proposed (LeTourneau and Blukis Onat 2004b) (Appendix B).
Divergence from these methods was limited and resulted from field conditions that could not
have been anticipated. They are noted in the following discussion. Procedures for specific
analyses are included in separate SECTIONS that describe the respective analysis results and in
specialist appendices.
Overall staffing for data recovery investigations has been detailed in SECTION 1. The more
specific responsibilities assigned to different persons are indicated in the following.
3.3.1. Fieldwork Safety and Security
During the data recovery field excavations, the archaeological crew followed standard OSHA
safety regulations. Lucy F. Zuccotti acted as BOAS safety officer. All Field Archaeologists and
supervisory staff wore safety vests as a preventive measure due to vehicular traffic on a nearby
driveway. Hard hats were worn when construction took place near the archaeological
excavations.
For site safety and security, the investigation area was surrounded with chain -link fencing
(Figure 15 -d and Figure 17). The fence had a movable gate that was locked at night. Some crew
members lived at the Ray Carrossino Farmhouse and provided informal site security during non-
working hours. Sound Transit assigned security guards to patrol the area during times when
archaeological work was not taking place.
Access to the investigation area was restricted to BOAS excavation personnel and occasional
visiting professional archaeologists and tribal representatives. Substantial wooden stairs were
built into the north and south walls of the excavation area to provide safe, low- impact access
(Figure 17 and Figure 18). Designated walking routes within the area of investigations
minimized impact by excavation personnel.
36
M
August 15, 2012
Mr. Mike Perfetti
J.A. Brennan Associates PLLC
100 S. King Street, Suite 200
Seattle, WA 98104
RE: DUWAMISH GARDENS CONTAMINATED MEDIA STUDIES AND
OTHER COST OVERAGES SUMMARY
Dear Mr. Perfetti:
Shannon Wilson (S &W) is submitting this letter to communicate recent cost overages related
to geotechnical borings and contaminated soils testing and laboratory analysis that are being
incurred on the Duwamish Gardens project. In addition, we understand additional work may be
performed on the project for cultural and archaeological studies, for which we recommend
including time for S &W environmental staff to provide observations during testing. We also feel
that extending the groundwater monitoring efforts would provide additional insight to project
design, and benefit the project. I have summarized our cost overages and recommended proposed
additional work below.
SHANNON
ALASKA
CAL I
6WILSON, INC.
COL ORADO
GEOTECHNICAL AND ENVIRONMENTAL CONSULTANTS
FLORIDA
MISSOURI
OREGON
WASHINGTON
August 15, 2012
Mr. Mike Perfetti
J.A. Brennan Associates PLLC
100 S. King Street, Suite 200
Seattle, WA 98104
RE: DUWAMISH GARDENS CONTAMINATED MEDIA STUDIES AND
OTHER COST OVERAGES SUMMARY
Dear Mr. Perfetti:
Shannon Wilson (S &W) is submitting this letter to communicate recent cost overages related
to geotechnical borings and contaminated soils testing and laboratory analysis that are being
incurred on the Duwamish Gardens project. In addition, we understand additional work may be
performed on the project for cultural and archaeological studies, for which we recommend
including time for S &W environmental staff to provide observations during testing. We also feel
that extending the groundwater monitoring efforts would provide additional insight to project
design, and benefit the project. I have summarized our cost overages and recommended proposed
additional work below.
TASK 2.3.A GEOTECHNICAL INVESTIGATIONS (ADDITIONAL GROUNDWATER
MONITORING)
The groundwater monitoring period specified in the scope includes a 2 -month monitoring period,
which occurred during mid -June through mid August 2012. Our current plan is to decommission
400 NORTH 34 °i STREET —SUITE 100
PO BOX 300303
SEATTLE, WA 98103
206 632 -8020 FAX 206 695 -6777
TDD: 1- 800 833 -6388
www.shannonwilson.com
21 -1 -12368 -024
47
IMIM
=10
TASK 2.3.A GEOTECHNICAL INVESTIGATIONS (ADDITIONAL GROUNDWATER
MONITORING)
The groundwater monitoring period specified in the scope includes a 2 -month monitoring period,
which occurred during mid -June through mid August 2012. Our current plan is to decommission
400 NORTH 34 °i STREET —SUITE 100
PO BOX 300303
SEATTLE, WA 98103
206 632 -8020 FAX 206 695 -6777
TDD: 1- 800 833 -6388
www.shannonwilson.com
21 -1 -12368 -024
47
Mr. Mike Perfetti
SHANNON WILSON, INC.
J.A. Brennan Associates PLLC
August 14, 2012
Page 2 of 4
the data loggers next week (August 20, 2012). We recommend extending the groundwater
monitoring through winter and spring 2013. There are numerous reasons for extending the
groundwater monitoring:
Winter flood and high tide maximum groundwater elevations can be documented for
geotechnical and slope stability design.
The variability in daily fluctuations, related to bank stability, can be observed over
the fall /winter flood and spring runoff periods.
Groundwater elevations measured in B -1 are directly linked to the Green River
surface water elevations. Measurement of this information can be used for finalizing
design elevations for winter and spring juvenile chinook migration periods. Currently,
surface water elevations are being approximated using the Lower Green River HEC-
RAS model.
The estimated cost to continue monitoring through May 2013 is $5,000, including monitoring
equipment rental extensions or purchases, three quarterly data downloads, report updates and
distribution of data, and administration of the work.
21 -1- 12368- 024- L1.docx/wp/1kn
21 -1- 12368 -024
W
owns
21 -1- 12368- 024- L1.docx/wp/1kn
21 -1- 12368 -024
W
Mr. Mike Perfetti
J.A. Brennan Associates PLLC
August 14, 2012
Page 3 of 4
SHANNON MILSON, INC.
A Additiefial shallow sail sample tests ffeffi the 6 additional geoprebe leee4ions-.
Mn
TASK 2.2 CULTURAL AND HISTORICAL RESOURCE INVESTIGATIONS
We have been diligently coordinating with J.A. Brennan and Paragon (ESA Adolfson) on
cultural and archaeological resource investigations. The expansion of the cultural resource
investigations has required additional time on behalf of S &W staff in support of the studies. We
have provided review of the proposed testing program; are recommending site visits during
testing; and have provided comment on potential geologic, sedimentation, and anthropomorphic
history that may provide insight to the site characterization. We would like to request additional
funding to continue supporting J.A. Brennan, Paragon, and the City of Tukwila on this matter.
Our proposed budget is as follows:
Coordination and review time 2 hours Principal- in- ChargeNice President, 2 hours
Associate, and 2 hours Principal Engineer $1,000.
On -site assistance 16 hours Principal Engineer for on -site assistance and 2 days of
travel and 2 hours Associate for administration and contract management for $2,177.
21 -1- 12368- 024- L1.docx/wp/1kn
21 -1 -12368 -024
I
Mr. Mike Perfetti
SHANNON WLSON, INC.
J.A. Brennan Associates PLLC
August 14, 2012
Page 4 of 4
CLOSING
In summary, S &W is requesting proposing a project cost modification to our contract as
follows:
Task 2.2 Cultural and Historical Resources Investigations $3,177
Task 2.3 Geateehnieal hivestiga4ians (east aver X93+
Task 2.3.A Geotechnical Investigations (extend GW monitoring) 5,000
Task 2.4 Contaminated Media investigeAians
G, ner-a r e fi tr et Rate >C.,,, G,. e
Total Request
$15,463
We understand that the project is limited to funding by the City and grant limits and timelines.
However, we do feel that changes in the project schedule, cultural resources conditions,
additional costs to complete soils testing, and the opportunity for extending groundwater
monitoring are justifiable requests to the City.
Please let me know if you have any questions regarding this letter.
Sincerely,
SHANNON WILSON, INC.
C'L�
David R. Cline, P.E.
Associate
DRC /dre
21 -1- 12368- 024 -L Ldocx/wp/Ikn
21 -1 -12368 -024
50
City of Tukwila Public Works
J.A. BRENNAN ASSOCIATES, PLLC ISeptember 17, 2012
DUWAMISH GARDENS DESIGN ADDITIONAL SERVICES
WORK DESCRIPTION I jg
1 Administration Coordination
1 Job set -up
2 Subconsultant Coordination
3 Sche duling
i T otall
2 Cultural Resources Site Delineation
2.1 Client/Agency coordination
2.2 Archaeological trenching
23 Interim report of results
2.4 Site meeting
2.5 Archaelogical test units
2.6 Artifact Analysis
27 Technical Report
2.8 Site form update
2.9 Curation preparation
Total Cultural R esources Site Delineation
3 Geotechnical and Environmental Support
3.1 Additional groundwater monitoring
3.3 On -site assistance for cultural resource investigation
Total Gootechnical Investigations
Total
IN
IM
r
1
3
Labor
176.50
1,228.00
6 684.00
0 0.00
0 0.00
3 303.00
0 0.00
0 0.00
2 241.00
0 0.00
0 0.00
11 1,228.00
MUMM
1 101.00
1 101.00
2 202.00
30 3,316.50
irand
otal
Shan. Wil.
176.50
176.50
165.20
1_,22800
1,228.00
6,838.00
482.00
482.00
4,054 00
1;880,50
405.40
86.5d�
1,044.00
684.00
i
849.20
1,451.40
0.00
68180
3,560.10
0.00
405.40
3,960.00
303.00
407.40
6,716.00
0.00
3,560.10
7,628.60
0.00
396.00
241.00
912.60
9,180.00
0.00
280.10_
1,846.00
0.00
918.00
80258.60
1;228.00
8,412.60
0.00
101.00
601.00
5,000.00
101.00
418.70
3,177.00
202.00
1,019,70
8,177.00
3;316.60
11,318.80
8,177,00
176.50
1,228.00
482.00
Il l7a,l`.1,' 0.00 o a0 „I 1,800;So
1652.00
1,652.00
165.20
2,501.20
6,838 00
6,838.00
683.80
7,521.80
4,054 00
4,054.00
405.40
4,459.40
1,044.00
1,044.00
104.40
1,451.40
5,601.00
35,601.00
3,560.10
39,161.10
3,960.00
3,960.00
396.00
4,356 00
6,716.00
6,716.00
671.60
7,628.60
2,801.00
2,801.00
280.10
3,081.10
9,180.00
9,180.00
918.00
1 10,098.00
1,846.00
71,846.00
7,184,60
80258.60
so=
5,000.00
HEM
500.00
MMM_ 11
5,601,00
3,177.00
317.70
3,595.70
D-1-h GaIde Tukwila, 2012- 09-17.xNx, Option A 10/1772012
i