HomeMy WebLinkAbout2016-10-26-CITY OF BOZEMAN LYMAN CREEK WATER SYSTEM EXPANSION PROPOSAL FOR CONTROL SYSTEM IMPROVEMENTS •;�iyr r ^ �—
i
City of Bozem Lyman Creek W ter System Expansion
Proposal for Control Sys mprovements
To: Brian Heaston, Project Engineer, City of Bozeman
�0 BO
From: Scott Buecker, PE, AE2S
th Uti
Date: October 26 , 2016
ty'••...1883...•••�,�
BACKGROUND
Multiple workshops were held with the City of Bozeman in May and June of 2016, regarding the
risk, cost and potential benefits of well drilling at Lyman Spring. The outcome of these
meetings was a decision to forego drilling the spring in the near-term, and instead utilize some
of the budget originally allotted to the drilling phase for controls improvements to the existing
spring junction box and flow control valve in the chemical storage and injection facility.
The purpose of the controls improvements is to enable better capture of the water currently
lost as overflow to the headwaters of Lyman Creek. Based on 330 measurements of the
overflow from 2010 through the end of 2015, the rate of flow averaged 513 gpm. It appears
that increased efforts to minimize this overflow has improved over time, but in recent years it
still averages over 250 gpm and ranges well above 500 gpm during the periods of highest spring
production, even when the City's use is below their instantaneous water right.
Controls Improvements Project to Eliminate Spring Box Overflow
Flow control from the spring box can be automated by continuously monitoring the level in the spring
box and using the level to automatically adjust the flow rate setpoint that the existing Cla-Val flow
controller can use to adjust the flow control valve in the chemical treatment facility.
The level in the junction box would be measured with a submersible pressure transducer that will be
anchored to the spring box to measure the water level above it. The level signal from the transducer
would need to be transmitted to the chemical treatment facility. This would be done via radio between
the spring box and the chemical treatment facility. The level transducer and radio would both be run
City of Bozeman Lyman Spring Control Improvements Page 1 of 3
Think Big.Go Beyond. PJ AE2S www.ae2s.com
Task/Item Cost Estimate
Engineering
Preliminary Engineering Report—to determine most cost-effective
power supply $12,000
Construction
Spring Junction Box Control Panel $25,000
Pressure Transducer and Local Transmitter $6,000
Radio Repeater(either on ridge or near canyon opening) $2 000
Solar Panel or Pico Hydro (TBD by Preliminary Engineering Report, /
assumed Pico Hydro for the purposes of estimation) $25,000
Electrical Installation: direct bury of signal cable between transmitter
and spring junction box. Transmitter will be located either on ridge $80 000
or at PRV No.1. Assumes 2,000 ft of direct bury.
Receiver and Control Panel at Chemical Treatment Building $20 000
Air Relief Valve and Vault upstream of PRV No. 1 $50,000
Programming and Startup $8,000
Construction Subtotal $228,000
Construction Contingency (15%) $34,200
Total Cost Estimate $262,200
The largest unknowns are the source of the power for the new monitoring and control (solar vs.
pico-hydro) and the cost of the direct bury signal wire between the level sensing and radio
transmitter.
As a design-build project, AE2S would complete this work open-book. This will alleviate the lack
of definition of some of the work scope. Any savings under the $262,200 could be split.
Please advise as how you would like to proceed, and contact me if you have any questions or
requested modifications.
Regards,
Scott Buecker, P.E.
City of Bozeman Lyman Spring Control Improvements Page 3 of 3
Think Big.Go Beyond. P AE2S www.ae2s.com
i
Montana Code Annotated 2015
i
I
Preuous Section MCA Contents Part Contents Search Help Next Section
I
18-2-501.Definitions.As used in this part,unless the context clearly requires otherwise, the
following definitions apply:
(1) "Alternative project delivery contract" means a construction management contract, a general
contractor construction management contract,or a design-build contract.
(2) "Construction management contract" means a contract in which the contractor acts as the i
public owner's construction manager and provides leadership and adnunistration for the project,from
planning and design, in cooperation with the designers and the project owners, to project startup and
construction completion.
(3) "Contractor" has the meaning provided in 18-4-123.
(4) "Design-build contract" means a contract in which the designer-builder assumes the
responsibility and the risk for architectural or engineering design and construction delivery under a
single contract with the owner.
(5) "General contractor construction management contract" means a contract in which the general
contractor,in addition to providing the preconstruction, budgeting, and scheduling services,procures
necessary construction services, equipment,supplies, and materials through competitive bidding
contracts with subcontractors and suppliers to construct the project.
(6) "Governing body" means:
(a)the legislative authority of.
(i)a municipality, county, or consolidated city-county established pursuant to Title 7, chapter 1, 2,
or 3;
(ii)a school district established pursuant to Title 20; or
(iii)an airport authority established pursuant to Title 67,chapter 11; or
(b)the board of directors of a county water or sewer district established pursuant to Title 7, chapter g
13,parts 22 and 23.
(7) "Project" means any construction or any improvement of the land, a building, or another
improvement that is suitable for use as a state or local governmental facility.
(8) "Publish" means publication of notice as provided for in 7-1-2121, 7-1-4127, 18-2-301,and 20-
9-204.
(9) "State agency" has the meaning provided in 2-2-102, except that the department of
transportation,provided for in 2-15-2501,is not.considered a state agency.
History: En.Sec. 1,Ch.574,L.2005;amd.Sec. 1,Ch.29,L.2009.
Provided by Rontana Legislative Services
Montana Code Annotated 2015
Previous Section MCA Contents Part Contents Search Help Next Section
18-2-503.Alternative project delivery contract-- award criteria. (1) (a)Whenever a state
agency or a governing body determines,pursuant to 18-2-502,that an alternative project delivery
contract is justifiable, the state agency or the governing body shall publish a request for qualifications.
(b)After evaluating the responses to the request for qualifications, a request for proposals must be
sent to each respondent that meets the qualification criteria specified in the request for qualifications.
The request for proposals must clearly describe the project,the state agency's or the governing body's
needs with respect to the project,the requirements for submitting a proposal, criteria that will be used
to evaluate proposals, and any other factors, including any weighting, that will be used to award the
alternative project delivery contract.
(2)The state agency's or the governing body's decision to award an alternative project delivery
contract must be based, at a minimum, on:
(a)the applicant's:
(i)history and experience with projects sinular to the project under consideration;
(ii) financial health;
(iii) staff or workforce that is proposed to be committed to the project;
(iv) approach to the project; and
(v)project costs; and
(b) any additional criteria or factors that reflect the project's characteristics, complexities, or goals.
(3) Under any contract awarded pursuant to this part, architectural services must be performed by
an architect, as defined in 37-65-102, and engineering services must be performed by a professional
engineer, as defined in 37-67-101.
(4)At the conclusion of the selection process,the state agency or the governing body shall state
and document in writing the reasons for selecting the contractor that was awarded the contract. The
documentation must be provided to all applicants and to anyone else,upon request.
(5) A state agency or the governing body may compensate unsuccessfiil applicants for costs
incurred in developing and submitting a proposal, provided that all unsuccessful applicants are treated
equitably.
History: En.Sec.3,Ch.574,L.2005.
Provided by Afantana Legislative Services