HomeMy WebLinkAboutChange Order No. 2 with Hydro Logic, Inc. for Well 7 & 8 AbandonmentMemo
To: Jaycee Holman; Tara Green
From: Clint Worthington, P.E., Staff Engineer
CC: Kyle Radek, P.E., Assist. City Engineer
Warren Stewad, P.E., Engineering Manager
Thomas Bany, P.E.G., Public Works Director
Becky Licari, Administrative Secretary
Date: July 9, 2009
Re: Proposed Agenda Item for July 21, 2009 City Council Meeting
The Public Works Department respectfully requests the following item be placed on the April
21 City Council agenda, under Consent Agenda, for Council's consideration:
Chancae Order No. 2 for Well 7 and 8 Abandonment. Additional work was required in the
attempt to redevelop Well #8 which resulted in the need to abandon the well. Additional work
was also required for the abandonment of Well #7. This change order consists of the
following work:
Additional work required in attempt to redevelop well #8
Well #8 abandonment
Additional work required to extract well screen and preserve existing building
coupled with additional grout volume required to abandon well #7.
For a more detailed description of the additional required work please see the attached email
from the consultant, Hydro Logic, Inc.
The change order will be paid using funds from the Enterprise Fund for Surface Well
Maintenance (60-3410-53310)
Recommended Council Action: The Public Works Department
recommends that City Council approves Change Order No. 2 for Well #7
and #8 Abandonment with Hydro Logic, Inc., for $8,434.98 and authorize the
Mayor to sign it.
Thank you for your consideration. Please contact me if o have n questions regarding
this item.
7 / A
• Page 1
CITY OF MERIDIAN
33 EAST IDAHO
MERIDIAN, ID 83842
CONTRACT CHANGE ORDER
Change Order No.: 2
Project Number: 780
Date: 7/8/2009
Effective Date:
CONTRACTt7R: Hydro Logic, Inc.
PROJECT: Well #T and #8 Abandonment
7Tie CoMractar is hereby directed to make the tollowirtg changes from the Contract Documents and Ptana.
Desciption:
1) Additional work required ro Abandon Weti ii~7
2} Additional work requtred ro Redevelop wan N8
3) Abandonment of Weti Ife
4)
Reason for Change Order:
WeA #7 - Addiiianel work required to extract weU screen and preserve existing building coupled with additional
grout volume required to abandon well.
Well #8 -Additional work was required in the attempt to rehabilitate the well. The Weil was not able to be
rehabilitated and abandonment was required.
Attachments:
Email from Hydro Logic, Inc, explaining change order.
CHANGE IN CONTRACT PRICE: CHANGE IN CONTRACT TIMEti:
Odglna) Contract Price: $15,000.00 Original Contract Completion Date:
Original Contract Co anon Days:
Net changes Conn precious C.O: s.: Net Da)ra change form previous C.O.'s:
No. Q to 0 No. Q ro Q
$0.00
Contras Pdce Prior ro this C.O.: Contract Completion Date before this C.O.:
$15,000.00
Net Increase (decrease) of this C.O.: Net Days Increase (decrease) of this C.O.:
$8,434.88
Contrail Pdoe with aU Approved C.O.'s: Conlrad Completion Date with ell Approved C.O: s:
$23,434.88
RC-COMHIEND
N
ST
RUC
noN
MANAC3 R)
ED
(CO ACCEPTED ( OR-,
~
~
}
'
-
`
,
= :
Y
Date: / ~-
7 ~ C__®
Y
Gate:
G
9 pip- . act
APPROVED: (CRY PURL O At4 COUNCIL APPROVAL
sy: Kelm welts ~ \`~ ' ~ ~~~ ~ ~ ,,///
~
Data: ~~ ~ ~ _ Data:
/~ ~//~
APPROVED: ATTES p r~O '~~
By: M or Ts y de eerd
Oaro: ~ ~.t - ~ ~ By: Cily CI , _ y~ T
Date: l .~ JJ
~~
9~ r 15'~ • Q~`~1`
/////~~rcO i i r ~~~~~~`\ ~
Page 1 of 2
Clint Worthington
From: Ed Squires [ed@hydrologicinc.net]
Sent: Monday, July 06, 2009 7:12 AM
To: Clint Worthington
Cc: Kyle Radek; Tom Barry; Rick Clinton
Subject: 7-6-2009 Meridian Supply Wells #7 and #8 Abandonment Project Wrap Up and Change Order
Attachments: 7-3-2009 Meridian #8 Well Bill.doc
~ ! -
1002 W. Franklin St. Boise, ID 83702 (2081342-8369 Fax: (208) 342-3100 Cell: (2081631-6781
Clint,
As promised, I have sent out our final invoice for the Well #8 abandonment project by today's U.S. Mail
including a tabulation and reconciliation of both project's (Well #7 and Well #8) total costs. As we
have discussed, the well screen removal on Meridian Well #7 and the mid-project changes from
abandonment to re-development to replacement and back to abandonment for Well #8 resulted in
additional charges not anticipated by the original Task Order for the abandonment of both wells.
This communication is intended to provide an overview of the reasons for the additional costs for the
construction of a change order to cover the additional costs:
1) WELL #7:
a. We originally estimated a simple abandonment for Well #7 at $ 7,500.
b. To facilitate a better grout seal where casings were telescoped, and to recover 50 feet of
reuseable stainless steel well screen, we had the the contractor successfiilly extract the
well screen assembly (estimated recovery of ~$ 8K of screen in good condition).
c. We also preserved the pump house for the Water Department and patched the concrete
floor of the building.
d. The total cost of abandonment of Well #7 is $ 9,135.95 including a large unanticipate
grout volume and extraction of the well screens.
e. The overage for this, above the original estimate is $ 1,635.95; well worth the cost for
the improved abandonment and recovered well screens.
Z) WELL #$:
a. We originally estimated a simple abandonment for Well #8 at $ 7,500.
b. This project commenced as an abandonment project and $ 2,898.64 was expended
towards that goal.
c. Parks Dept. inquired about re-developing the well as an irrigation well for the Main
Street landscaping and Storey Park.
d. Upon scraping, brushing, and swabbing the Well #8, severely corroded casing and sand
production was observed.
e. At this time, a replacement well project was considered, designed and costed with
several meetings with the City.
f. Toward the re-development and replacement well projects, $ 5,992.64 was expended
including camera surveys and geophysical logs.
g. Presented with the idea and cost of constructing a new ground water supply well for
irrigation, the City elected not to pursue a new well.
7/8/2009
Page 2 of 2
h. The City then returned to the original well abandonment project and that work was
completed for an additional cost of $ 5,407.75.
i. The abandonment portion of the project cost $ 8,306.39 ; $ 806.39 over the original
estimate including large unanticipated grout volume.
j. The total overage for all Well #8 projects (above the original project cost estimate) is $
6,799.03
3) CONCLUSIONS:
a. The $ 1,635.96 overage on Well #7 is well worth the cost for the improved abandonment
and $8,000-worth of recovered well screens.
b. The Well #8 abandonment project exceeded its original budget by $ 806.39 including
unanticipated and unforseeable grout volume.
c. The Well #8 re-development and replacement projects cost $ 5,992.64.
d. A Change Order is needed in the amount of $ 8,434.98
My best accounting of HLI invoices for these projects is attached above.
All for now; let me know if you need more information from me.
Ed
7/8/2009