HomeMy WebLinkAboutAmendment to Contract Tenth Street Pump Station VC;) VS ENGINEERING, INC.
Civil • Structural • Transportation • Environmental
December 10, 2010
Mr. Len Ashack, Director
Wastewater Department
City of Jeffersonville
1420 Pennsylvania Avenue
Jeffersonville, IN
RE: Tenth Street Pump Station Design Additional Design Fee
Dear Mr. Ashack:
Per our project meeting on December 7, 2010, please find attached Attachment
A - Additional Services by Engineer for Additions and Modifications Beyond
Original Scope of Services and VSE Manhour and Fee Justification for the
additional design cost for overflow screening facility and modifications to grit
removal and screening. In addition to the design services, scope and fee for
update of Preliminary Engineering Report (PER) and submission to the State
Wastewater SRF Program are included.
Please provide a notice to proceed for the additional design work and PER
update in the amount of 695,400.00
If you have any questions or need additional information please contact me at
(317) 626 -0070.
Very Truly Yours,
5�, 3 •
Sanjay B. Patel, P.E.
President
:SBP
4275 North High School Road Indianapolis, Indiana 46254
(317) 293 -3542 Tel (317) 293-4737 Fax
www.vsengineering.com
1
Attachment A
Additional Services by Engineer
for
Additions and Modifications beyond Original Scope of Services
Task 2C — Detailed Design Overflow Screening Facility
Engineer shall conduct final design of the overflow screening facility as requested by the
Wastewater Department Director. The Scope of Services includes the following items:
1. Plan, coordinate, and monitor detailed design of facility required to provide
overflow screening to the grit removal and screening facilities, including new
electrical services for the facility.
2. Realignment of the diversion and intercepting structures to meet equipment
manufacturer's recommended hydraulic layout. Revisions to structural design,
plans and details of the structures.
3. Adjustments to the Site and Civil drawings to reflect the modified diversion and
intercepting structure and sewer layout.
4. Modifications to the project specifications sections that are required for inclusion
of the overflow screen into the overall Work.
5. Adjustments to the screening and grit building to increase the size of the
electrical control area to house additional electrical controls and hydraulic power
packs required for the overflow screen.
6. Modifications to the MEP Sub - Consultant's drawings and specifications to
provide electrical service, control capability and water service recommended by
the Manufacturer for the overflow screen.
Task 2D — Modifications to Detailed Design of Grit Removal and Screening
Facilities
Engineer shall conduct final design of the grit removal and screening facilities based
upon a meeting with City personnel held at VSE on December 7, 2010 and information
provided by Jorge Lanz (JTL). The Scope of Services includes the re- design of a
diversion structure, sewer pipes, channels, grit removal facility, screening facility,
instrumentation and control, and new building. In addition, design of a structure to
modify the existing wet well to accept influent flows from the north directly into the wet
well instead of through the existing influent channels.
1. Plan. coordinate. and monitor detailed design of modifications to grit removal and
screening facilities, and existing wet well.
1 - 1I
VSE
2. During the design process, resolve questions related to alignments, hydraulics,
intercept and diversion structures, critical elevations, appurtenances. structural
design requirements, instrumentation and control, and other design data in order
to assume compatibility and consistency of technical aspects of the design with
TSPS improvements and other elements of this project.
3. Prepare preliminary details and structure design for realignment of grit removal
and screening facilities and wet well structure addition.
4. Evaluate results of additional geotechnical investigations and survey.
Reevaluate and revise the geotechnical design as necessary.
5. Design and draft details of proposed grit removal and screening facilities
including diversion structures, intercepting structures, sluice gates, channels,
electrical services and other design features.
6. Coordinate permitting with INDOT for impact to Tenth Street. Include in plans
maintenance of traffic information and add to project specifications direction to
Contractor and responsibilities to comply with INDOT permit.
7. Modify project specifications sections that are required for grit removal and
screening facilities and equipment.
8. Coordinate with equipment manufacturers to obtain modified size, specification
and cost information due to deeper depth and its impact on equipment and
control requirements, including electrical service.
9. Modify proposed force main alignment to minimize gas main relocation and
improve easement location north of the screening and grit removal facility.
10. Complete 90% design of modifications to grit removal, screening and new
electrical services facilities along with modifications to existing Tenth Street
Pump Station wet well structure and incorporate into the overall 90% completed
plans and specifications and probable construction cost for the owner
submission. Of the plan sheets submitted November 19, 2010, it is anticipated
that forty -three (43) plan sheets will require revisions.
Task 2E — Preparation of Project Preliminary Engineering Report (PER) for
submittal to the State Wastewater SRF Program
1. Prepare project PER in accordance with SRF requirements, update the PER
submittal documents to reflect adjusted costs to include the overflow screen and
provisions to serve a future interceptor sewer, respond to questions on the PER
from review and approval agencies.
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VSE
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