AECOM
300 Lakeside Drive, Suite 400
Oakland, CA 94612
Tel: 510.893.3600
Fax: 510.874.3268
January 5, 2017 Cultural Resources Proposal, Horton Street Landing 1/5/2017 Mr. Maurice Kaufman
Public Works Director/City Engineer
City of Emeryville
1333 Park Avenue
Emeryville, CA 94608
Re: Preliminary Archaeological Testing
West Approach Horton Street Landing Project, Emeryville Dear Mr. Kaufman:
AECOM (formerly URS Corporation [URS]) has developed the following scope of work and cost estimate to assist the City of Emeryville (City) with preconstruction archaeological clearance for the Horton Street Landing Project. These efforts represent a continuation of the work begun by URS in 2010, which was put on hold in early 2012 due to loss of Redevelopment Agency funding. The archaeological efforts outlined in this scope of work, as well as the balance of the work which was put on hold in the original contract between the City and URS, are required to ensure that the City remains in compliance with Conservation Policy 30 (CSN-P-30) of the City’s General Plan as well as California Environmental Quality Act (CEQA) cultural resources guidelines. This proposal responds to your request for a proposal to identify potential archaeological resources on the west abutment and approach of the project, which was not analyzed as part of the original 2010 investigation
The City’s current objectives are to establish a better understanding of the subsurface conditions along the west approach for the project, and verify that appropriate mitigation of possible significant archaeological resources can be implemented prior to project construction. This proposal is limited to an initial coring program in order to provide data on subsurface conditions which will inform the approach for pre-construction archaeological clearance and/or archaeological monitoring during construction of the project. It is expected that additional contracts or amendments to fund the mitigation work put on hold in 2012, as well as possible additional mitigations based on the results of the initial work on the west approach, will be necessary.
Based on our understanding of prior archaeological investigations in the vicinity of the project’s west approach, there is a moderate potential for intact prehistoric archaeological resources to be present, associated with CA-ALA-309 and -310. Although the current project’s area of impact is outside of the primary midden areas identified for these sites, buried pockets of intact midden and isolated burials were documented throughout the Bay Street mall development area. As such, there is the potential for ground disturbing activities associated with the west approach of the Horton Street Landing Project to cause effects to potentially significant archaeological resources.
In order to address this potential, and avoid costly delays due to unanticipated constructionperiod discoveries, AECOM proposes to conduct an archaeological examination of the soils in the west approach footing locations through investigatory soil bores. If midden soils, or other Mr. Maurice Kaufman
January 4, 2017
potentially significant archaeological resources are encountered within the proposed footing locations, additional activities will likely be necessary, including mechanical pre-excavation of the footings in order to ensure that significant archaeological resources or human remains will not be encountered during construction; and possibly limited test excavations or data recovery excavations. Such activities are not covered under the current scope and budget. These efforts would require a separate request that could be combined with the reauthorization of monitoring and report writing funds previously approved for the Horton Landing east approach area (“Area F”), under the original agreement between the City and URS.
Summary descriptions of all tasks are provided below, and a cost estimate for the proposed work is provided in Attachment A.
Task 1: Project Set Up, Site Specific Health and Safety Plan, and Project Management Prior to initiating field work, AECOM will prepare a site specific Health and Safety Plan which will address concerns regarding contamination of fill material at the site and appropriate work protocol and PPE, given the specific site contaminations identified in the EKI (2010) Environmental Risk Management Plan. It is assumed that no air monitoring will be required, but that all personnel working on site and in direct contact with excavated soils will need to be 40- hour HAZWOPER certified. This task also includes initial project set up, project management, initial field visits to mark the site for Universal Services Alert (USA), a private utility locator, and other preparations prior to field work.
Task 2: Geoprobe Soil Bores
A series of direct push continuous sample Geoprobe soil cores will be excavated and analyzed to characterize subsurface conditions within the proposed footing locations for the west approach and the potential for significant archaeological deposits. Although the footings are planned to be relatively shallow (~5 to 7 feet below surface) the depth of project impacts will be much greater, associated with piles drilled and placed below each footing. In order to determine whether archaeological resources are present within these depths of potential project activities, and document the depositional setting of any archaeological resources that are present, Geoprobe bores will be advanced to a maximum 30 ft below surface. A maximum of 5 bores will be placed south of Temescal Creek, and a maximum of 4 will be placed north of the creek, in proximity to proposed footings.
The soil cores will be transported to and examined at the vacant City-owned lot on the eastern side of the Horton Landing (“Area F”). Each core will be opened and described using standard soils and geomorphological techniques. Natural and or cultural stratigraphy will be identified whenever possible by carefully examining each core. Stratigraphic units (strata) and soil horizons will be identified based on physical characteristics such as composition, color, superposition, textural transitions, and pedogenic properties (i.e., relative soil development).
Master soil horizons will be defined using standard United States Department of Agriculture soil taxonomy (Soil Survey Staff 2006). Upon completion of examination and documentation, the cores will be placed in drums and left on-site to be disposed of appropriately by the City’s Mr. Maurice Kaufman
January 4, 2017
construction/remediation contractor during project construction. AECOM is not responsible for environmental sampling or characterization of the sediments.
Upon completion of the coring program, a brief technical document will be prepared, including stratigraphic profiles, and recommendations for any additional mitigation if necessary, including mechanical pre-excavation of footing locations, construction monitoring, and/or archaeological data recovery excavations. One round of consolidated review by the City, not requiring new data acquisition, is assumed.
Assumptions:
• The City will have a surveyor mark the corners of each proposed footing on the west side of the railroad right-of-way, prior to AECOM marking the site for USA and locating utilities
• No air monitoring or dust suppression required
• No testing or disposal of Geoprobe bore cuttings
• Alameda County Drilling Permit fee not to exceed $265 • No Native American consultation required at this time by AECOM • No federal nexus for the project which would require compliance with Section 106 of the National Historic Preservation Act
• Any additional archaeological data recovery, monitoring, treatment plans, recovery plans, or other mitigations would require a separate scope and budget. • City to secure all right of entry.
• One initial site visit to plot boring locations and mark for Underground Services Alert (USA).
• Three (10 hour) days of coring, with a maximum of nine locations. • One round of consolidated review for all deliverables, with no new data acquisition.
Estimated Charges and Schedule
URS requests that the City of Emeryville issue a new work order in the not-to-exceed amount of $26,750 to implement the tasks described herein and detailed in Attachment A. Schedule for these tasks is predicated on issuance of Notice to Proceed (NTP) and pre-marking of the footing areas by the City. Start of the drilling program is anticipated to begin no later than 15 days from issuance of NTP, but is reliant on the drilling subcontractors schedule at the time.
Limitations
AECOM will perform the services described here in a manner consistent with that level of care and skill ordinarily exercised by members of the same profession currently practicing in the same locality under similar conditions. This proposal is conditioned upon the negotiation of mutually acceptable contract terms.
Mr. Maurice Kaufman
January 4, 2017
If you have any questions about this proposal, please contact Jay Rehor at (510) 874-1726. We appreciate the opportunity to continue to work with you on this important project.
Sincerely,
AECOM
Jay Rehor Steve Leach
Senior Geoarchaeologist Vice-President, Environmental Services Project Manager
Attachment A: Cost Estimate
Attachment A: Cost Estimate Table
Task 1 Task 2
COST ITEM Rates
Project
Management and
Health and Safety
Plan
GeoProbe Soil Bores
and Reporting
Subtotal
Cost
Labor Costs (AECOM)
Project Manager/Senior Geoarchaeologist (JR1) $135.00 16 62 $10,530.00 Project Archaeologist (KK) $110.00 6 16 $2,420.00
Archaeological Technician (AG) $85.00
Osteologist (GC) $75.00
Equipment Operator (WC) $95.00
CAD/ GIS Tech/ Illustrator (OA) $115.00 1 8 $1,035.00
Health and Safety Officer (SC) $135.00 2 $270.00
Editor /Word Proc. (DF) $95.00 2 $190.00
Administrator (JR2/MW) $90.00 3 2 $450.00
Subtotal Labor Hours by Task 28 90 $14,895
Total Labor Cost by Task $3,475 $11,420 $14,895
Other Direct Costs (ODCs) and Subcontractors
Cascade Drilling $9,800 $9,800
Alameda County drilling permit $265 $265 $265
Private Utility Locator $1,225 $1,225
Direct AMS (radiocarbon) $300
Fencing $900
Fuel, truck, per diem, etc.
Backhoe Rental
Markup on ODC's and Subs 5% $61.25 $503 $565
Total ODCs $1,286 $10,568 $11,855
TOTAL BY TASK $4,761 $21,988
TOTAL COST: $26,750
Staff:
AG= Annamarie Guerrero; DF= Deborah Fournier; JR1= Jay Rehor ; KK= Kathleen Kubal; JR2= Jennifer Raneses; MA= Melissa Walden; OA= Otto Alvarez; SC= Shannon Couch; WC= William Cerrito