HomeMy WebLinkAbout6 Aqua Hydrogeologic Consulting Agenda Item #
s
blic Utility District
Memorandum
To: Board of Directors
From: Ed Taylor
Date: 7/24/03
Date of Board Meeting: July 30, 2003
Subject: Consideration of proposal from Aqua Hydrogeologic Consulting to
provide supervision and documentation during the well abandonment program
1. WHY THIS MATTER IS BEFORE THE BOARD
The State of California has specific rules and regulations regarding Well
Abandonment. This contract is to help assure that the District is in compliance
with those State rules and regulations.
2. HISTORY
At the July 8th, 2003 Board meeting, the Board approved the Well Abandonment
Program and authorized staff to distribute bid documents and to advertise. The
Well Abandonment program requires supervision and documentation during the
process.
3. NEW INFORMATION
District staff requested a proposal from Aqua Hydrogeologic Consulting to
supervise and document the Well Abandonment process. A copy of David
Carlson's proposal is attached.
4. RECOMMENDATION
I recommend that the Board approve the proposal from Aqua Hydrogeologic
Consulting for supervision and documentation during the well abandonment
program in an amount not to exceed $24,310.00
4 Y I
OWN
July 21, 2003
Mr. Ed Taylor
Water Utility Manager
Truckee Donner Public Utility District
11570 Donner Pass Road
Truckee, CA 96160
RE: Scope of Work and Cost Estimate for Hydrogeologic Consulting Services for the
supervision and data collection during the well abandonment program
Dear Ed:
I am pleased to present this scope of work and cost estimate for the supervision and data
collection during the well abandonment program. It is anticipated that 12 production type wells
will be abandoned under this program. The following summarizes the proposed work plan; a
.detailed scope of work and cost estimate follows the summary.
• Work together with TDPUD personnel to develop a well abandonment bid document.
• Inventory each of the 12 wells to be abandon through taking photographs of each well
prior to abandonment along with its GPS location.
• Provide on-site supervision and data collection during the pump removal, installation of
the cement seal, excavation of the casing to a depth of five feet below land surface, and
the installation of the final cement seal from a minimum of 20 feet below land surface to
a depth of 5 feet below land surface and the forming of a cement cap.
• Filling in of the excavated hole with native material.
The above is a brief summary of the activity to be covered under this proposed scope of work.
The following is a more detail summary of each proposed task and a cost estimate to perform the
described work.
Scope of Work
Task 1 During Task 1, AquA will work with TDPUD personnel and put together the well
abandonment bid document. AquA will work with the abandonment contractor to
oversee the field activity from beginning of the program as described in Task 2, to the
completion of the program.
Task 2 AquA personnel will photograph each of the wells to be abandoned prior to the start
of the program. During each phase of the field activity, a detailed written log and
photographic history will be maintained. It is anticipated that the abandonment
program will proceed in the following sequence.
P.O. Box 18793 • Reno Nevada 89511 • (775)250-9700 9 Fax(775)841-0946 • DavidECarlson@msn.com
• Photographic each well prior to commence of abandonment program.
• Remove production pump and supporting equipment from each well.
• Remove supporting electrical equipment and pump building.
• The contractor will tag bottom of well-bore and compare measurement with well log
data. If there is fill material or obstacles in the well-bore, the material and obstacles
will be removed.
• The well-casing shall be exposed to a depth of five-feet below land surface with the
soil being excavated to this depth. The casing shall then be cut-off five feet below
land surface.
• A cement seal will be pumped into the well-bore utilizing a tremi pipe. This seal will
be place throughout the well-bore from total depth to five feet below land surface.
• At a depth of five feet below land surface the cement will be allowed to spill over the
top of the casing and form a cap.
• After the cap has set-up, the excavated native material will then be place back in the
hole and the well cap completely covered.
• During all steps a photographic record will be maintained along with detailed field
notes.
Task 3 This task will involve developing a written and photographic history of each well that
was abandoned under this program. The report will contain a record of all field
activity, along with the original well log,if available from the State of California,
Department of Water Resources.
A cost estimate for the above described tasks is as follows:
Cost Estimate
Task 1 Contract Development pre-work activity
Senior Hydrogeologist 16 hrs @ $90/hr $1�440
Total $1,440
Task 2 Field supervision and data collection
Senior Hydrogeologist 24 hrs @ $90/hr $2,160
Field Technician 180 hrs @ $65/hr 11,700
Vehicle expense (15 days at$40/day) 600
Total $14,460
Task 3 Report
Senior Hydrogeologist 40 hrs @ $90/hr $3,600
Graphic Designer 40 hrs @ $65/hr 2,600
Total $6,200
1�
Sub-Total $22,100
Contingency 10% $2,210
Project Total $24,310
If you have any questions regarding this proposed scope of work and cost estimate, please contact
me at(775) 250-9700.
Sincerely,
David Carlson