09046_PTRP Northern_Bailey PP_Proposal for Geotech Exploration Services_20151215

S&ME, Inc. | 8646 W Market St, Ste 105 | Greensboro, NC 27409 | p 336.288.7180 | f 336.288.8980 | www.smeinc.com
December 15, 2015
Engineered Concepts
600-D North Regional Road
Greensboro, North Carolina 27410
Attention:Mr. Niels E. Andresen, PE
Reference:Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
Dear Mr. Andresen, PE:
S&ME, Inc. (S&ME) is pleased to submit this revised proposal for geotechnical exploration services at the
above referenced project. The proposal was revised to modify the client to Engineered Concepts and to
include site demolition services by Whiting Turner personnel in preparation for the subsurface exploration
services. This proposal describes our understanding of the project, discusses the intended scope of
services, outlines the project schedule, and presents the associated compensation for our services.
PROJECT INFORMATION
Project information has been obtained from the following:
♦Telephone conversations between Meade Willis with Engineered Concepts and Matt Moler with
S&ME from March 17 to April 14, 2015.
♦A site visit attended by Meade Willis with Engineered Concepts and Matt Moler on April 2, 2015.
♦An annotated foundation drawing for the plant depicting proposed excavation locations for
existing foundations and seven proposed boring locations (e-mailed by Meade Willis on
April 15, 2015).
♦Review of a Brownfield Agreement for the project site (dated February 22, 2010).
♦A scope of work provided by Armen Armenakyan with FDH Velocitel in an e-mail dated
April 13, 2015.
♦A site meeting attended by Niels Andreson with Engineered Concepts, Jason Neves with Whiting
Turner, Rakesh Khan with FDH Velocitel, and Matt Moler and Mark Hayes with S&ME on
December 7, 2015.
S&ME understands the Bailey Power Plant is planned to be renovated for commercial and retail
development. The structure is a multi-story building that was once the power plant for the RJ Reynolds
tobacco processing facilities. The building is located across an entire city block and is bounded by West
5th Street to the north, Patterson Avenue to the east, 4th Street East to the south, and North Chestnut
Street to the west. The building consists of a steel-framed structure bearing on pile supported
Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
December 15, 2015 2
foundations and an interior slab-on-grade. The exterior consists of brick veneer and cast in place
concrete. Several masonry stacks are located around the perimeter of the building. A portion of the west
side of the structure near some existing stacks is currently condemned and not open for access.
Engineered Concepts is preparing structural design documents associated with the redevelopment of the
structure. The majority of the redevelopment will utilize the existing building structure for support of new
interior floor levels. New concentrated loading in some areas may require additional foundation support
through the use of micropiles. A new single-story restaurant is planned to be constructed in the
northeast corner of the existing building.
In the north half of the existing building, we understand foundations consist of 8 to 10-inch diameter steel
pipe piles with capacities of 35 tons per pile. Numerous pipe pile foundations are tied together in a
central pile cap at each column location. It is anticipated that the piles bear on underlying rock materials.
In the south half of the building, construction drawings are not available and the existing foundation
support in this area is not known. It is believed the foundations in this area are also driven piles bearing
on rock.
To investigate the characteristics of piles supporting the south portion of the building, FDH Velocitel
(another consulting firm) is planning to perform non-destructive tests on selected pile supported
foundations. The non-destructive tests will consist of parallel seismic testing, which determines the length
of the installed piles. Parallel seismic testing involves the installation of parallel boreholes advanced
adjacent to and within approximately 15 feet of selected pile foundations. A PVC casing is installed in the
borehole, then the annulus around the PVC is grouted while the interior of the pipe is filled with water.
The test involves the installation of a hydrophone on the inside of the PVC casing that measures
vibrations from impacts to the pile or foundation cap at various depths within the borehole.
S&ME has been requested to perform borings at selected areas of the site to support the planning,
design, and renovation of the structure. A total of seven borings have been requested (two for the
planned single-story restaurant and five for the existing building exploration). Five of the boreholes will
require installation of grouted PVC casing for FDH Velocitel to perform the non-destructive tests on
selected pile foundations. Three of the borings are located on the inside of the structure and will require
ventilation to facilitate safe drilling within the structure.
We understand the property is designated as a North Carolina Brownfield Project. Known environmental
impacts include soil and groundwater contaminants (including diesel-range petroleum hydrocarbons,
chromium, lead, thallium, benzene, etc.). Subsurface exploration activities at the site will require
conformance with the guidelines provided in the Brownfield agreement.
DISCUSSION
S&ME has been requested to perform borings at selected areas of the site to support the planning,
design, and renovation of the structure. Based on our experience with subsurface conditions in the
Winston-Salem area, we anticipate site subsurface conditions could consist of near-surface existing fill
overlying residual soils derived from the weathering of Piedmont parent rock materials overlying partially
weathered rock and rock. The depth to rock is variable but is anticipated to be between 40 and 60 feet
below existing grade.
Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
December 15, 2015 3
Requested boring locations are identified on the attached Exploration Plan. Three of the borings
(B-3 through B-5) are located on the interior of the building and four are located on the exterior of the
building (B-1, B-2, B-6, and B-7). Anticipated boring depths are provided on the attached Boring
Summary Table. Prior to performance of the borings, site underground utilities will need to be identified
by a private utility locator. Whiting Turner personnel plan to demolish portions of concrete slabs or
pavement materials to expose portions of the existing concrete foundation caps and to provide sufficient
drill rig access.
Borings for the single-story restaurant (B-1 and B-2) will be advanced to depths of 15 feet below existing
grade or auger refusal. Borings performed for the evaluation of existing pile supported foundations need
to extend to auger refusal materials and then at least 10 feet into rock materials using HQ coring
equipment. The HQ coring equipment provides an approximate borehole diameter in the rock of
3.75 inches – which is sufficient to install the PVC casing for the parallel seismic testing. Standard
Penetration Tests will be performed in all of the borings to obtain samples of the site soils and to
determine consistencies of the materials, and groundwater level measurements will be performed after
drilling completion.
S&ME will install grouted PVC casing in five of the boreholes (labeled B-3 through B-7) for FDH Velocitel
to perform the non-destructive tests on selected pile foundations. The installation will be in general
accordance with the scope of work provided by FDH Velocitel.
Exploration locations on the inside of the structure are located in areas with sufficient clear space to use a
conventional drill rig (at least 80 feet of overhead clear space). Due to being on the inside of an existing
building, S&ME will use fans to ventilate the structure through open bay doors.
As the site is a Brownfield, special handling of the drill spoils and grouting of the boreholes upon
completion will be required. S&ME will conduct the site exploration activities using procedures consistent
with industry standards and the Brownfield Agreement. As such, on-site personnel will have required
certifications and personal protective equipment. All drill spoils and samples will be placed in 55-gallon
drums, the exploration locations grouted to prevent migration of contaminants, and tooling steam
cleaned between locations. An S&ME professional will be on-site during drilling and sampling to stratify
soils and field screen recovered soil samples to measure for the presence of volatile organic compounds
(VOCs). The purpose of the field screening is to confirm if contaminants achieve a sufficient concentration
that other drilling and sampling protocols (than currently anticipated) will be required. Changes to these
procedures will require a written statement by the owner. All soil and rock samples will be stratified in the
field and left at the site.
The objective of the exploration is geotechnical, not environmental. However, contaminated soils are
anticipated to be encountered.
SCOPE OF SERVICES
S&ME proposes to offer the following scope of geotechnical services for this project:
♦Prepare a site specific health and safety plan for field services to be performed at the site. The
health and safety plan will use assessment data from the Brownfields Agreement to develop site
specific personal protective equipment and screening protocols for S&ME field personnel.
Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
December 15, 2015 4
♦Contact the NC 811 service to mark the locations of existing underground utilities in the
proposed exploration areas. NC 811 will not locate utilities on private property; therefore S&ME
will subcontract a private utility locator to identify private utilities, if any, on the site in proximity
to the borehole locations. S&ME will not be responsible for damage to unmarked private utilities.
♦Coordinate with Whiting Turner personnel to confirm they demolished portions of concrete slabs
or pavement materials to expose portions of the existing concrete foundation caps and to provide
sufficient drill rig access.
♦Provide the North Carolina Brownfields Program with notice of drilling activities at least 7 days
prior to drill rig mobilization.
♦Mobilize a power drilling rig mounted on a truck or ATV and crew to the site.
♦Drill the seven test borings to depths or termination criteria indicated on the attached Boring
Summary Table. The total drilling footage anticipated is 330 feet of SPT sampling and 75 feet of
rock coring. The borings will include split-barrel soil sampling at 2.5-foot intervals in the upper
10 feet and 5-foot intervals thereafter. The sampler will be driven in general accordance with the
Standard Penetration Test procedures (ASTM D 1586-11). Rock coring will be performed using
HQ coring equipment. S&ME will steam clean drilling equipment between each boring location.
♦Field screen recovered soil samples with a photo-ionization detector (PID) during drilling activities
to measure for the presence of volatile organic compounds (VOCs). All site soils and rock
obtained from the borings will be drummed and staged on-site for disposal by others.
♦Measure water levels in all boreholes upon drilling completion.
♦For borings B-3 through B-7, install PVC casing and tremie grout the casings in accordance with
the Scope of Work provided by FDH Velocitel. Water will be backfilled within the casing for
testing by FDH Velocitel.
♦Following testing by FDH Velocitel, S&ME will grout all boreholes full depth with neat bentonite
cement.
♦Prepare an engineering report summarizing our understanding of the proposed redevelopment,
exploration, subsurface conditions, and recommendations. Recommendations will address:
♦Excavation and groundwater conditions at the boring locations.
♦Shallow foundation support recommendations for the single-story restaurant.
♦Design parameters for design of new micropile foundation elements.
♦Site preparation and grading recommendations.
♦Construction observation and testing recommendations.
♦Seismic site class determination.
♦Installation records of the parallel seismic boreholes.
NOTE: This proposal is solely intended for the Basic Services as described in the Scope of Services. The
Scope of Services may not be materially modified or amended, unless the changes are agreed to in
writing by the Client and S&ME. Use of this proposal and corresponding final report is limited to the
above-referenced project and client. No other use is authorized by S&ME, Inc.
Excluded Services
Without attempting to provide a complete list of all services or potential services that will be excluded
from this proposal and not performed by S&ME, the following services are specifically excluded from this
proposal:
Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
December 15, 2015 5
♦Parallel seismic testing services or interpretation of the test data (to be performed by FDH
Velocitel).
♦Laboratory testing of site soil or rock samples.
♦Removal of site soil and rock samples from the site (will be drummed at the site and left for
others to dispose of).
♦Provide water for rock coring or for filling the PVC tubes. We understand Whiting Turner
personnel can provide a source of water for S&ME personnel.
♦Survey of boring locations or elevations.
♦Addenda to the geotechnical report to address changes or additions to the proposed project not
known to us at the time of this proposal.
♦Construction phase services. The monitoring of construction or testing of construction materials
is beyond the proposed scope of geotechnical services.
♦Environmental Services (laboratory evaluation of soil and groundwater contaminants or other
environmental services).
If any of the above excluded services are required, please contact us so that we can modify this proposal
or prepare a proposal for additional services.
Client Responsibilities
The Scope of Services, fee, and project schedule presented herein are contingent upon the client fulfilling
the following responsibilities:
1.Provide access to the property.
2.Provide available information of utilities serving the project site and the presence and accurate
locations of hidden or obscure man-made objects relative to field tests or boring locations.
3.Coordinate with Whiting Turner personnel to confirm they demolished portions of concrete slabs
or pavement materials to expose portions of the existing concrete foundation caps and to provide
sufficient drill rig access.
4.Provide water for rock coring or for filling the PVC tubes. We understand Whiting Turner
personnel can provide a source of water for S&ME personnel.
5.Coordinate with Whiting Turner personnel to confirm that removal and disposal of any
containerized soil or rock samples has been performed in accordance with State regulations.
SCHEDULE
We will proceed with the project upon authorization and receipt of signed authorization. We will
coordinate with you, FDH Velocitel, and Whiting Turner personnel to coordinate site access, perform site
exploration services, and submit our report. We anticipate the field work will likely take 5 to 7 days. Our
written report can be provided within 2 weeks after field work completion.
COMPENSATION
We will perform the Basic Services described above in accordance with the unit rates shown on the
attached Budget Estimate. The cost is dependent on the subsurface conditions encountered in the
borings. We recommend budgeting $62,000 for this scope of services. If we conclude that additional
Proposal for Geotechnical Exploration Services
Bailey Power Plant Project
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised
December 15, 2015 6
services are necessary based on the subsurface conditions encountered, we will confer with you. We will
not proceed with additional services that incur additional costs without your permission.
AUTHORIZATION
S&ME understands the scope of services described above will be performed in accordance with a
Standard Agreement provided by Engineered Concepts.
CLOSING
S&ME appreciates the opportunity to be of service to you. If you have questions regarding this proposal,
or if we may be of further assistance, please contact us.
Sincerely,
S&ME, Inc.
Matt Moler, P.E.Scott Hancock, P.E.
Senior Engineer/Project Manager Technical Principal/Vice President
MM/SH/wj
Attachments: Exploration Plan
Boring Summary Table
Budget Estimate
S&ME Certificate of Insurance (For Information Only)
Attachments
Boring Purpose Planned Boring Depth (ft)
B-1
B-2
B-3
B-4
B-5
B-6
B-7
Notes:
2. Standard penetration tests will be performed in all borings.
S&ME Proposal No. 13-1500186 Revised
Single-Story Restaurant Footprint
Borings
Advance Hollow Stem Augers to 15 Feet or Auger
Refusal, Whichever is Encountered First. Penetrate
Existing Fill (if any).
Existing Building Exploration
Borings / Parallel Seismic Testing
Boreholes
Advance Hollow Stem Augers to Auger Refusal.
Auger Refusal Anticipated at 60 Feet. Core 15 Feet
into Refusal Materials. Install Schedule 40 PVC
Casing for Parallel Seismic Testing by Others. Grout
Boreholes Completely Following Testing.
BORING SUMMARY TABLE
Geotechnical Exploration Services
Bailey Power Plant
Winston-Salem, North Carolina
1. Borings will require demolition of concrete and/or asphalt at the boring locations to facilitate drill rig
access.
A. PREWORK PREPARATION
1. Project Manager
(Initial Site Visit, Proposal Coordination/Development)15 hours @ $140.00 /hour $2,100.00
(Health and Safety Plan preparation)6 hours @ $140.00 /hour $840.00
2. Mileage 100 miles @ $0.60 /mile $60.00
Subtotal: $3,000.00
B. FIELD TESTING
1. Project Professional
(utilities, coordination)8 hours @ $110.00 /hour $880.00
(on-site monitoring, soil/rock stratification)70 hours @ $110.00 /hour $7,700.00
2. PID/FID analyzer 7 days @ $150.00 /day $1,050.00
3. Subcontract concrete coring (budgeted)$0.00
4. Subcontract private utility locating (budgeted)$1,500.00
5. Mobilization of Truck or ATV-mounted Drill Rig & Crew (lump sum)$550.00
6. Mileage 250 miles @ $0.60 /mile $150.00
7. Soil Test Borings with SPT Sampling 330 feet @ $15.00 /foot $4,950.00
8. Rock Core Setup 5 borings @ $250.00 /boring $1,250.00
9. Rock Core Casing (HQ Casing)300 feet @ $11.00 /foot $3,300.00
10. Rock Core (HQ Core Barrel)75 feet @ $65.00 /foot $4,875.00
11. Drums for drill soil and rock spoils (2 per boring)14 drums @ $65.00 /drum $910.00
12. Drums for rock core water (5 per boring)25 drums @ $65.00 /drum $1,625.00
13. Decontamination pit setup (lump sum)$500.00
14. Decontamination between borings (30 minutes per boring)3.5 hours @ $250.00 /hour $875.00
15. Cuttings containment and drum handling (1 hour per boring)7 hours @ $250.00 /hour $1,750.00
16. Rock Core Water Hauling (1 hour per boring)5 hours @ $250.00 /hour $1,250.00
17. Steam cleaner and generator 5 days @ $150.00 /day $750.00
18. Fans for building ventilation 5 days @ $150.00 /day $750.00
19. 2-Inch ID PVC Schedule 40 Casing (Grouted)375 feet @ $32.00 /foot $12,000.00
20. Borehole Grouting (after Parallel Seismic Tests completed)405 feet @ $8.00 /foot $3,240.00
Subtotal: $49,855.00
C. PROFESSIONAL SERVICES
1. Technical Advisor 10 hours @ $170.00 /hour $1,700.00
2. Project Manager 25 hours @ $140.00 /hour $3,500.00
Coordination of Field Activities with Project Professional
Coordination with Site Personnel and Project Team
Analysis
Preparation of Report
3. Project Professional 35 hours @ $110.00 /hour $3,850.00
-Log/Profile/Picture Preparation
-Figure Preparation
4. CAD Operator 4 hours @ $70.00 /hour $280.00
5. Administrative 4 hours @ $50.00 /hour $200.00
Subtotal: $9,530.00
Total: $62,385.00
Total Estimated Cost: $62,000.00
SUBSURFACE EXPLORATION
BUDGET ESTIMATE
Geotechnical Exploration Services
Bailey Power Plant
Winston-Salem, North Carolina
S&ME Proposal No. 13-1500186 Revised