HomeMy WebLinkAboutTask Order No. 10005A with Terracon Consultants, Inc. for Meridian Road Soil ClassificationE�-IDZ IAN,'?--
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PURCHASING AGENT
33 E. Broadway Ave, Meridian, ID 83642
Phone: (208) 888-4433 x 417
Fax: (208) 887-4813
TASK ORDER NO. 10005A
Between
CITY OF MERIDIAN
AND
TERRACON CONSULTANTS, INC.
This Task Order is issued by City and accepted by the Engineer pursuant to the mutual promises,
covenant and conditions contained in the Master Agreement between the above mentioned parties
dated January 4, 2007 and signed January 29, 2007.
CITY OF MERIDIAN
Meridian Road Soil Classification
SCOPE OF SERVICES
Per the City's Request, Terracon will provide geotechnical services for the proposed project.
These services are listed in Terracon's Proposal No. P62100179 dated December 9, 2010
(Attachment A).
TIME OF PERFORMANCE
Terracon can typically begin field explorations within about one to two weeks of receipt of the
signed Task Order, depending on drilling subcontractor availability. We estimate that the final
geotechnical report could be completed within about two weeks following completion of our
borings.
COMPENSATION
The fee for these services will be based on the lump sum amount of $5,500.00.
CITY OF MERIDIAN
Department approval
BY: U CJ
RO NNE HOLLAND, STAFF ENGINEER
Dated: 12-1101 D —
Approved as to Conten
BY:
KEITH S, PUR HASING AGENT
Dated: /� /�
TERRACON CONSULTANTS, INC.
BY:
Dated: faz// 7l�a
TASK ORDER NO. 10005A
Between
CITY OF MERIDIAN
AND
TERRACON CONSULTANTS, INC,
CITY OF MERIDIAN
Meridian Road Soil Classification
ATTACHMENT A
I F
1 g- I I op-ackm . n1c,
December 9, 2010
City of Meridian Public Works Department
33 E. Broadway Ave., Suite 200
Meridian, ID 83642
Attn: Ms. Roxanne Holland, E.I.T.
E: rholland@meridiancity.org
Re: Proposal for Geotechnical Engineering Services
Proposed Trench Excavation - Meridian Road
Meridian, Idaho
Terracon Proposal No. P62100179
Dear Ms. Holland:
Thank you for the opportunity to submit this proposal for geotechnical engineering services for the
proposed trench excavation along Meridian Road in Meridian, Idaho.
A. PROJECT INFORMATION
We understand the proposed project will consist of a temporary trench excavated to construct
utilities along Meridian Road south of Fairview Avenue in Meridian, Idaho. We understand that
the maximum depth of the trench will be approximately 20 feet. Within the project area, Meridian
road is paved with asphalt paving. We understand that piezometers were previously installed in
the project area, but no soil information from the piezometers is available.
Anticipated Conditions — Based on our experience in the general area, including borings drilled
for the nearby Meridian City Hall building, we anticipate the native soils will consist of silt and/or
clay underlain by mixtures of sand, gravel, and silt. We anticipate that groundwater will be
encountered within the proposed boring depth.
B. SCOPE OF SERVICES
In general, the scope of services will include a field exploration, laboratory testing of soil
samples, classification of soil samples, and preparation of a letter summarizing the results of
this work. More specifically, the individual tasks are as outlined below.
Field Exploration — The City of Meridian had requested that we drill three borings for the
proposed project. The borings will be drilled near Meridian Road's intersections with Elm
Avenue, Idaho Avenue, and Bower Avenue. As requested, the borings near the intersections
of Elm Avenue and Idaho Avenue will be drilled to depths of about 20 feet. The boring drilled
near Bower Avenue will be drilled to a depth of about 16 feet.
As the borings will be drilled within the roadway, traffic control services will be provided during
the field exploration by a subcontracted traffic control provider.
Terracon Consultants, Inc. 11849 West Executive Drive, Suite G Boise, Idaho 83713
P [2081 323 9520 F 12081323 9592 terracon.com
Terracon Proposal
Proposed Trench Excavation ■ Meridian, Idaho Irerracon
December 9, 2010 m Terracon Proposal No. P62100179
Borings will be logged by our field engineer/geologist and samples will be obtained as the drilling
progresses. Boring locations will be measured by pacing or taping from prominent site features
and elevations will be measured relative to a fixed object on or near the site with an engineer's or
hand level.
Barings will be backfilled in accordance with Idaho Department of Water Resources guidelines if
groundwater is encountered. If groundwater is not encountered in a boring, the borehole will be
backfilled with drill cuttings. Based on existing paved ground surface conditions, we anticipate
that excess cuttings from the borings will need to be collected and disposed of offsite. We have
included collection and disposal of cuttings in our services.
Our estimate assumes that the field exploration can be performed without the need for personal
protective equipment for hazardous materials. If evidence of contamination is encountered in any
of the borings, the exploration at that location will be terminated and our findings discussed with
you. Should personal protective equipment, special borehole sealing procedures, or disposal of
contaminated soil become necessary, our fee will be discussed with you prior to commencing
further drilling.
The borings will be drilled through the existing asphalt pavement. The boreholes will be patched
using cold mix asphalt. Prior to our exploration, we will contact the "one -call" locate service,
Digline. If there are existing utility lines that will not be marked by Digline, these will need to be
marked prior to drilling activities. We are not responsible for damage to unmarked utilities.
Prior to drilling, we will obtain a permit from the Ada County Highway District. We understand that
there will be no fee for this permit. If there are restrictions about the locations of our borings,
times when field work may occur, or access limitations to portions of the site, we should be
notified of these prior to beginning our field work to reduce delays and additional costs.
Laboratory Evaluations -- Laboratory testing will be conducted on representative samples to
determine their engineering and physical properties. Tests may include moisture content,
gradation, and Atterberg limits. Unconfined compressive strengths of samples of cohesive soils
will be approximated using a pocket penetrometer or standard penetration test blow counts.
Analysis and Report — Field and laboratory data will be summarized and presented in a brief
letter that will present our boring logs and include classifications of the soils encountered in
accordance with Unified Soil Classification System. The letter will also include information
regarding the depth to groundwater (if encountered in the borings). The letter will not address
trench backfill or other construction related issues.
Schedule — We can typically begin field explorations within about one to two weeks of notice to
proceed, depending on drilling subcontractor availability. We estimate that the final
geotechnical report could be completed within about two weeks following completion of our
borings.
Reliable ■ Responsive ■ Convenient ■ Innovative 2
Terracon Proposal
Proposed Trench Excavation a Meridian, Idaho
December 9, 2010 o Terracon Proposal No. P62100179
Irerracon
C. COMPENSATION
The fee for these services will be based on the lump sum amount of $5,500.00. An
approximate break down of our fees is shown below:
Item
Fee
Field exploration -- Includes utility clearance, field engineer/geologist,
drilling and traffic control subcontractors, and disposal of excess cuttings.
$3,500.00
Laboratory testing
$700.00
Soil classification and document preparation
$1,000.00
Total
$5,500.00
These costs are based on the scope of work and assumptions described above. If unexpected
subsurface conditions are encountered or the project scope is altered from that described above,
this fee may need to be renegotiated. This fee would not be exceeded without first reviewing the
project with you.
D. AUTHORIZATION
This proposal may be accepted by issuing a purchase order and task order in accordance with the
existing Master Agreement for Professional Services dated January 4, 2007 between the City of
Meridian and Terracon.
Thank you for the opportunity to submit this proposal. We look forward to working with you on this
project. Please call us if you have any questions.
Sincerely,
Terracon Consultants, Inc.
J.
R an J..2, P.E.
R.i0:da1 P62100179 Terracon Proposal—Meridian Road Soil Classification.doc
Copies To: Addressee (2 Originals and 1 Electronic)
MatPewiFlelding,P.E.
Reliable o Responsive o Convenient o Innovative 3