HomeMy WebLinkAbout2009-217 WORK ORDER NUMBER 15
This Work Order Number 15 is entered into as of this 13 day o L 20099
pursuant to that certain Continuing Contract Agreement for Professional Service entered into
as of April 6 , 2004 and amended effective April 7 , 2007 ( as so amended , the " Agreement " ) , by
and between INDIAN RIVER COUNTY , a political subdivision of the State of Florida
( " COUNTY " ) and CAMP DRESSER & McKEE INC . ( " CONSULTANT" )
The COUNTY has selected the Consultant to perform the professional services set forth
on Exhibit A ( Scope of Work) , attached to this Work Order and made part hereof by this
reference . The professional services will be performed by the Consultant for the fee schedule
set forth in Exhibit B ( Fee Schedule ) , attached to this Work Order and made a part hereof
by
this reference . The Consultant will perform the professional services within the timeframe more
particularly set forth in Exhibit C (Time Schedule ) , attached to this Work Order and made a part
hereof by this reference all in accordance with the terms and provisions set forth in the
Agreement Pursuant to paragraph 1 . 4 of the Agreement , nothing contained in any Work Order
shall conflict with the terms of the Agreement and the terms of the Agreement shall be deemed
to be incorporated in each individual Work Order as if fully set forth herein .
IN WITNESS WHEREOF , the parties hereto have executed this Work Order as of the
date first written above .
CONSULTANT BOARD OF COUN-i Y ul'OMMISSIONERS)
Camp Dresser & McKee Inc . OF INDIAN RIVER COUNTY
i
By :
Eric J . rotke , P . E . , BCEE Chairman
Principal
BCC Approved : August_ 18 3 12 00 9
Date : 1121 l oq Date :
Attest : J . K . Barton , Clerk of Court
By :
Deputy Clerk
pproved :
J seph A . aird , County Administrator
proved as to form and legal sufficiency :
arian E . Fell , Senior Assistant County Attorney
j12347 Work Order 15 . docx
EXHIBIT A
SCOPE OF WORK
INDIAN RIVER COUNTY, FL
LIFT STATION PRECIPITATION STUDY
GENERAL
Indian River County (County) owns and operates two reverse osmosis (RO ] water treatment
plants . Through the course of operation, the formation of precipitant has been observed in the
odor control lift station at both facilities . This precipitation has also formed inside of the
downstream lift station force mains and if left untreated has the potential to block future flow .
The County has directed CDM to prepare this work order to perform a study to identify the
chemistry responsible for the lift station precipitation and recommend a possible solution .
SCOPE OF SERVICES
The following individual tasks comprise the scope of services for this project.
Task 1 — Data Request and Review
Upon receipt of written authorization for the precipitation study, CDM will provide the County
with a letter detailing the data requirements for laboratory chemical analysis on the flow
streams into the lift stations . After reviewing the data, CDM will identify any additional data
requirements, if necessary . In order to minimize cost of this project, the chemical laboratory
analysis will be performed by Indian River County ' s contract laboratory services provider and
paid for by the County .
Task 2 — Perform Chemistry Analyses
In order to determine the potential sources of this mineral precipitation, CDM will develop a
mixing model using the geochemical model PHREEQC and site specific water-quality data . The
PHREEQC model is a thermodynamic equilibrium program designed to model chemical
speciation in aqueous solutions, determine the saturation states of solutions with minerals and
gases, and predict the results of various reactions, such as dissolution of minerals and oxidation .
PHREEQC Interactive Version 2 . 15 . 0, released February 2008 , will be used to evaluate the
characteristics of various mixtures of blow - down water, process water and wastewater .
The primary focus of this evaluation will be to determine if the mixing ratios of blow- down
water, RO reject water, raw water, and wastewater in the collection system are the root cause of
mineral precipitation . Based upon the results of this analysis, additional modeling will be
conducted to evaluate the viability of potential engineering solutions . Potential solutions that
may be evaluated , based on preliminary model runs, will include pH adjustment, feed of
precipitation control compounds, and adjusting discharge feed rates to minimize the saturation
indices of minerals identified as having a high precipitation potential .
Task 3 — Memorandum
CDM will prepare a memorandum describing the data and modeling approach . The
memorandum will summarize the findings of the chemistry analyses with recommendations for
remediation . The memorandum will provide a chemical perspective to the issue, but will not be
an engineering design for the recommended solution or solutions .
A4 j12347. docx
OTHER SERVICES NOT INCLUDED IN THIS SCOPE OF SERVICES
This authorization does not include the cost of laboratory chemical analysis required for the
performance of the desk-top study . This authorization does not include the design of a remedial
process to counteract the chemistry identified in the study or recommendations made in the
memorandum . This study does not include any pilot testing of potential solutions suggested in
the Memorandum or plant engineering for implementation .
COUNTY RESPONSIBILITIES
The County will provide all reasonable data requested by CDM for the purpose of completing
the aforementioned tasks . The County will also provide a timely review of all work products .
A-2 jl2347. docx
EXHIBIT B
PROJECT BUDGET
INDIAN RIVER COUNTY
REUSE WATER RATE STUDY
PROJECT
DESCRIPTION : Lift Station Precipitation Study
Category Rate Hours Cost
PRINCIPAL $ 180 4 $ 720
SENIOR PROFESSIONAL $ 145 20 $2,900
PROFESSIONAL II $ 130 58 $ 7,540
STAFF SUPPORT SERVICES $ 80 10 $ 800
PROJECT ADMIN . $ 75 4 300
96 $ 12, 260
SALARY $ 12, 260
OTHER DIRECT COSTS 540
TOTAL ESTIMATED COSTS - Lump Sum $ 12, 800
TOTAL ESTIMATED ENGINEERING FEE
( LUMP SUM) 12800
B - 1 112347 Exhibits B_C .docx
EXHIBIT C
SCHEDULE
INDIAN RIVER COUNTY
LIFT STATION PRECIPITATION STUDY
SCHEDULE
The initial data request within one week of notice to proceed (NTP ) .
Delivery of draft report will occur within two weeks of receipt of data .
Delivery of Final Report will occur within I weeks of receipt of comments .
C _ I j12347 Exhibits B_C , docx