HomeMy WebLinkAbout07-01-2008SANITARY SEWER BOARD MEETING AGENDA
MEETING: TUESDAY July 1, 2008
3:00; MAYOR'S CONFERENCE ROOM; 2ND FLOOR, ROOM 230
NEW CITY HALL; JEFFERSONVILLE, IN 47150
I) Call to Order by Executive Member
2) RoLI Call
3) Approval of Agenda
4) Approval of Minutes
5) Approval of Claims
6) Old Business
7) New Business
8) Consultant and Engineer Reports
9) City Engineer Reports
10) Boazd Member Comments
11) Adjoummeat
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Wastewater Treatment Plant 50°/a Expansion
Jeffersonville Sewer Board
City of Jeffersonville, IN
Progress Meeting Minutes
1) Review minutes from previous meeting.
Distributed Previous Meeting Minutes
MAC has not been paid for Pay Request #1.
HDR remmed reviewed Headworks Resteel Drawings to MAC. HDR discussed
and approved modifying the grit chamber walls to match the existing grit
chambers. There will be no additional cost for this modification.
2) Contractors Update on Progress
Previous 30 davs
Auger Cast Pile Installation is completed.
Gravity Thickener W alls are completed. There is one placement for the effluent
box remaining then all concrete will be completed.
Lower Slab placed at Headworks Building.
Clarifier is excavated to approximately Elev. 440. Work on this stmcmre is "on
hold" currently.
Leak repaired on existing plant effluent line near Effluent Box.
Next 30 davs
Install yard piping and piping connections at New Gravity Thickener.
• Place walls and related stmcmres at New Headworks Building.
• Place foundation and related stmcmres for New Effluent Stmcture.
3) Contractors Pay Request
Received Contractor's Pay Request #2.
Transmitted to City of Jeffersonville for processing.
Jeffersonville W WTP 50% Expansion
June t9, 2008
Page 2 of 2
4) Engineer Observations
• HDR noted concrete placements look acceptable. There are some minor defects
which need correction. MAC to "bush out" a few small honeycombs a[ Gravity
Thickener. The honeycomb needs [o be removed down to well consolidated
concrete and the void fills with non-shrink grout. Bonding agent should be
applied before grouting.
• There is also an azea of voidPooneycombs in the New Headworks Slab. MAC to
repair with a similar method.
• HDR discussed requirements for concrete finishing. All exposed to view surfaces
from 1' below liquid level and 1' below grade should be "Clean Grout Finished"
with Thoroseal. HDR noted that there is not Thoroseal on existing stmcmres.
The Owner may want to consider a "deduct" for this work item.
• "Smooth Form Finish" should be applied to all other surfaces (below grade and
below liquid level). This means "fix defects." HDR stated their standazd was any
void larger than approximately %' should be grout filled after fins removed.
• HDR questioned what the cage lengths were on the auger cast piles which were
shortened approximately 6' due to grade differential. MAC responded the cages
were submerged deeper in the pile to accommodate for the shortening.
5) New Clarifier
• MAC discussed their proposed alternative to install rock anchors to support the
foundation of the New Clarifier in lieu of excavating and installing the support
stmc[ure shown on the Plans. MAC is in negotiation with several rock drilling
firms. MAC requested their sub, once selected, be allowed to discuss the
foundation design with HDR's Sfiucmral Subconsultant. MAC has submitted a
Change Order Proposal in the amount of $182,000.00 to remove approximately
7,000 CY of material, store at an offsite location, and refill the material once the
Clazifier is completed. MAC indicated the rock anchor option would most likely
be a $75k savings versus this option (net add of $107,000.00).
• HDR stated [his decision needs [o be approved by the Owner. They discussed [he
rock anchor option with their Structural Subconsultant. Until MAC selects a rock
anchor installer, their Stmctural Subconsultant can not proceed with any design
work. HDR noted they would need additional fee to re-design the Clarifier
Foundation. The final rock anchor design would be the responsibility of the rock
anchor installer. HDR would be responsible for the slab and concrete stmcmres
only.
• MAC requested the issue be presented to the Owner at the next Council Meeting.
HDR noted they needed 2-4 weeks to re-design the clarifier.