CHANGE ORDER NO. 10 REGARDING FORMER CLEARWATER MANUFACTURED GAS PLANT SITE
CITY OF CLEARWATER, FLORIDA
d/b/a CLEARWATER GAS SYSTEM
and
ENVIRONMENTAL CONSULTING & TECHNOLOGY, INC.
CHANGE ORDER NO. 10
March 1, 2005
CLIENT:
CITY OF CLEARWATER
d/b/a CLEARWATER GAS SYSTEM
400 North Myrtle Avenue
Clearwater, Florida 34615
PROJECT:
Former Clearwater Former Manufactured Gas Plant Site ("Site")
.The following changes are hereby made to the Professional Services Agreement.between
the CITY OF CLEARWATER, FLORIDA d/b/a CLEARWATER GAS SYSTEM ("eGS") and
ENVIRONMENTAL CONSULTING & TECHNOLOGY, INC. ("ECT"), dated as of April 22,
1994, (the "Agreement"):
1. Article I- Term of Agreement is hereby amended to extend the term of the
Agreement for a period of one year from the date of this Change Order. Personnel rates
set forth in this Change Order shall remain in effect throughout the extended term of this
Agreement.
2. Article II - Scope of Work is hereby amended to include the additional work as
more specifically set forth in Consultant's letter proposal dated February 25, 2005,
(Environmental Support Services for Myrtle Avenue Road Work Former
Manufactured Gas Plant) attached hereto as Exhibit A and incorporated herein by
reference. Consultant is currently revising the scope of work to provide, in part, for
installation and operation of a treatment system comprised of granulated activated carbon
filters in lieu ofthe portable air stripper described in Exhibit A. Prior to CGS' receipt and
written approval of the revised scope of work, CGS shall have no obligation to pay any
invoice issued by Consultant for work authorized by this Change Order.
3. Article III-Compensation is hereby amended to provide that the maximum costs
for fees and reimbursable expenses for the services described in Paragraph 2 above shall
not exceed the sum of Two Hundred Thousand Dollars ($200,000.00). In no event shall
such maximum costs be exceeded without authorization from CGS by written
approval of the appropriate Change Order. Any fees or reimbursable expenses
Consultant incurs in excess of said maximum costs and without written approval of
the appropriate Change Order by CGS shall be entirely at Consultant's obligation
and expense and CGS shall not be liable for same.
{OR861935;1}
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4. Except as modified herein, all the terms and provisions of the Agreement shall
remain in full force and effect.
APPROVALS REQUIRED:
t'~ULTING & TECHNOLOGY, INC.
Name: c ~t..CS D. "A//)/J.y
Title: Via- I'/G~.sl()r# r
Countersigned:
CITY OF CLEARWATER, FLORIDA
--I~ Y ~ By:
~V.HIbbard
Mayor
~~.~d1
William B. Horne, II
City Manager
Attest:
Laura Lipowski
As~istant City Attorney
r tft.: Z &.~o.
C~thia E. Gougeau. .
CIty Clerk __ . -' ..
{OR861935;1 }
Environmental ConsultIng & Technology,'nc.
February 25,2005
041013-0100
1408 North Westshore
Blvd, Suite 115
Tampa, FL
33607
(813)
289-9338
FAX(813)
289-9388
Mt. Brian Langille, P .E.
Clearwater Gas System
400 North MyrtleAvenue
Clearwater, Florida 33755
Re: Environmental Support Services for
Myrtle Avenue Road Work
Former Manufactured Gas Plant
400 North Myrtle Avenue
Clearwater, Florida 33755
Dear Mr. Langille:
Environmental Consulting & Technology, Inc. (ECT)is pleased to provide the
Clearwater Gas System with this proposal for environmental services. The City of
Clearwater is performing utility construction work in the area nearthe former Clearwater
Gas manufactured gas plant (MGP) site. Our services were requested to address potential'
MOP subsurface impacts that may affect the City's utility work.
In response to requests from Clearwater Gas System and its owner, the City of
Clearwater, services were begun in October 2004 and are in progress at this time, to
support resumption of construction activities in the area. Enough variables affe,cting the
future construction oversight and dewatering treatment have been defined at this time, so
that the future costs could now be estimated. Accordingly, this proposal describes the
requested services performed to date, the proposed services, and the estimated fees.
BACKGROUND SUMMARY AND OBJECTIVES
In mid-October 2004, the City directed its roadwork contractor, Westra, to halt storm
sewer construction work from Jones Street to Maple Street, due to increased dewatering
requirements and potential impacts from former fuel tanks in the area and/or from the
former Clearwater Gas MGP. To allow resumption of work in this project segment,
Clearwater Gas, its outside counsel, Mr. William Pence, Esq., and the City of Clearwater,
have consulted with ECT. Due to the potential MGP coal tar and diesel fuel impacts,
ECT was directed to collect soil and ground water samples, assess construction-related
exposure risks, prepare a Supplemental Site Assessment Report (SSAR), prepare an up-
to-date Health and Safety Plan (HASP) Addendum for the utility work, identify
dewatering treatment and permitting options, and secure required dewatering permits.
SUMMARY OF WORK COMPLETED
1. Preliminary Consultations through October 15, 2004
ECT'srisk management engineer, Chuck D. Hendry, Ph.D., provided risk ass~ssment
consultation to Clearwater Gas, the City, Mr. Pence, and attended meetings whh these
T:\MarkICGSIMyrlle Avenue Road ProjectlCGS _ Proposal !WfSiv~sS('R9ge'W.w~1ffi~agte Action Employer
Mr. Brian Langille, P.E.
February 25, 2005
Page 2 of7
parties, Westra, and the City's construction engineering inspection firm, PBS&J. No fees
were charged for these consultations.
2. Hart Street Excavation Safety
During a preliminary site visit with Clearwater Gas personnel on October 22, 2004, it was
noted that the Hart Street storm sewer excavation was not properly barricaded and posed
a safety risk to passersby. That afternoon, we better secured the open excavation from
passersby. We also covered the soil pile next to the excavation, to prevent exposure
pending receipt of analytical results.
3. Supplemental Assessment
ECT performed the following scope of work that was requested by Clearwater Gas
System to meet the project objectives:
I. Performed one day of Geoprobe@ soil borings down to about 10ft bls.
2. Collected soil samples for visual (coal tar) and organic vapor screening.
3. Collected vadose zone and phreatic (saturated) zone soil samples from each
boring for laboratory analyses.
4. Collected a soil sample at Maple Street, in response to an exploratory utility dig.
5. Collected ground water samples from selected surficial aquifer monitoring wells
to evaluate current water quality.
6. Evaluated the soil quality against applicable Soil Cleanup Target Levels (SCTLs);
7. Developed Alternative SCTLs (ASCTLs) applicable to the construction exposure
scenario anticipated at the site.
8. Prepared an updated Site-Specific HASP (SSHSP) and a HASP Addendum
addressing the anticipated construction exposures.
9. Evaluated. the ground water quality data for permitting and design of a system to
treat ground water produced by dewatering in the referenced project segment.
10. Drafted an SSAR with updated data summaries (tables and maps) and supporting
documentation of the work performed. Final report completion is pending.
4. NPDES Dewatering Discharge Permit Options
ECT researched information about the former MGP site and nearby sites (health
department, Chevron station), which have all had underground storage tank (UST) related
petroleum impacts to soil and ground water. FDEP normally does not allow using the
Generic NPDES Permit for Petroleum Contaminated Sites to be issued for MGP sites or
petroleum site plumes comingled with other types of contaminant plumes. In such cases,
individual industrial wastewater discharge permits are typically required by FDEP. Such
permits typically require substantially more expensive sampling, permitting efforts, and
longer review times than involved with the Generic Permit for Petroleum Sites. The
Generic Permit for "short term" discharges also eliminates the potentially costly toxicity
testing, which can easily fail and trigger added costs, delays, and construction shutdowns.
Ee,
Envlronmenlsl Consul/lng & Technology, Inc.
T'IMarkICGSIMyrtle Avenue Road ProjectlCGS - Proposal - HASP SSAR Dewatering -3a.doc
Mr. Brian Langille, P .E.
February 25, 2005
Page 3 of7
The MGP impacts at this site are practically indiscernible from typical petroleum (diesel
fuel) impacts. Due to the permitting and costs differences, ECT prepared a request for a
permitting determination, and submitted it to FDEPafter review and discussion with City
environmental personnel and City's outside legal counsel. The request to FDEP
documented why the site should qualify for the Petroleum Site Generic NPDES Permit.
Asa result of the submittal and ECT's response to FDEP questions, the FDEP approved
the use of Generic Petroleum Site Permits for the subject Project Segment.
5. Planning Dewatering Treatment with City Contractor
In a meeting with City personnel and subcontractors on January 24, 2005, ECT provided
a status report on the HASP Addendum and findings and on the dewatering permitting
efforts. With the City's authorization, ECT had extensive meetings that day with Westra
and PBS&J concerning specific work sequences, dewatering locations, durations,
treatment system set up, etc. The planning was needed to optimize coordination of the
dewatering treatment (to be paid by the City/Gas System) with Westra's excavation and
actual dewatering. '
6. NPDES Petroleum Permit #1 - Jones to Hart Streets
ECT prepared and submitted the required Notice of Intent (NOI), requesting coverage
under the Generic Petroleum Permit. The short-term permit was approved byFDEP on
February 11, 2005. Lead and toxicity testing, and carbon polishing are not required
under this short-term permit. It allows up to 30 days of discharge, in this segment. The
only analytical testing required is for pH, benzene and naphthalene.
7. NPDES Petroleum Permit #2 -Hart to Maple Streets
ECT prepared petroleum NOI "#2" for the segment from Hart Street to Maple Street and
sent it to FDEP on February 23, 2005. The details in item 6 above apply to this item as
well.
8.,NPDES Treatment System Specification, Bidding, Coordination
As directed, ECT evaluated options for the dewatering treatment system, solicited bids,
evaluated them, and provided the bid summary with the supplier recommendation. As
directed, ECT made tentative arrangements with the suppliers to mobilize the system
under short notice on Monday, February 14, 2005. However, a contractual dispute
between the City and Westra resulted in postponing that mobilization until further notice.
ECT and City personnel also met with a licensed electrical contractor to evaluate the
feasibility of supplying energy to the system through temporary power drops, rather than
a generator that would need to be fueled on a daily basis. The City secured a supplier to
refuel the generator at reasonable costs, and the power company lead times cannot be
accommodated at this point.
Ee,
Envlronmentsl Consulting & rechnology, Inc.
T:\MarklCGSIMyrtle Avenue Road ProjectlCGS - Proposal-HASP SSAR Dewatering -3a.doc
Mr. Brian Langille, P .E.
February 25, 2005
Page 4 of7
9. SSHSP / HASP Addendum
The HASP Addendum wascompleted and issued on Friday, February 18, 2005, with all
City and counsel comments incorporated.
10. Conference Call with City and Contractor
ECT personnel participated in a conference call with City and Westra personnel on
February 23, 2005. The parties confirmed their mutual understanding of HASP
Addendum requirements for worker protection, hazard communication, handling of
excess soil from the Project Segment, and coordination of dewatering treatment with
construction and dewatering.
Costs for the above services are summarized as follows:
Fees. Incurred for Requested Services Through February 18, 2005
(Approximate Breakdown)
Subcontracted Laboratories $11,200
Subcontracted Driller, Contractor, and other direct costs $2,400
Consultations, Risk Assessment Data Evaluation, Health and $20,800
Safety Plan Addendum, Site-Specific HASP
SSAR Data Evaluation, Consultations, Report $6,900
Field Work, Work Plans, Site Visits, Project Mgt., etc. $5,000
Generic Permit for Petroleum sites, NPDES Generic Permits $7,600
TOTAL COSTS TO DATE $53,900
PROPOSED ADDITIONAL WORK
11. Dewatering Treatment System Mobilization, Setup, Startup
During the above-mentioned conference call, ECT was directed by the City
environmental personnel to subcontract and set up the treatment system for startup on
Thursday, March 3, 2004. Westra confirmed that they will want to start their dewatering
operations on Friday, March 4th, to leave the system running over the weekend, so they
can start construction work on Monday, March 7,2005.
The system consists of an influent frac tank, a pump skid, and a portable air stripper
(diffused aerator type) equipped with an effluent pump. Power to the system (~A~
~(#I
Envlronmenlsl Consulting & Technology, Inc.
T:IMarkICGSIMyrtle Avenue Road ProjectlCGS - Proposal- HASP SSAR Dewatering -3a.doc
Mr. Brian Langille, P .E.
February 25,2005
Page 5 of7
will be provided by a portable generator withan on-board fuel tank. No supplemental
fuel tanks will be provided.
ECT will collect a sample on Thursday for rushed (I-day) laboratory analysis of the
effluent for benzene, naphthalene and pH. The results will be evaluated Friday, March
4th, to determine if the system can continue running over the weekend. During the
conference call, City environmental personnel directed ECT to proceed with effluent
discharge at startup in the conventional and permit-allowed manner, rather than
recirculating effluent back to the frac tank pending favorable analytical results. That
recirculation had been proposed earlier by ECT as a conservative measure, to mitigate the
potential for non-compliant discharge penalties, since the City is the permittee. However,
the FDEP has since agreed with ECT that lead sampling is not required by the permit for
this site. Additionally, such withholding of effluent is not normally required by the
Generic Permit. So the City personnel authorized discharge without it.
12. Dewatering Treatment System - Operation and Monitoring
ECT personnel will coordinate the refueling of the treatment system generator by a local
and licensed mobile fueling company. ECT personnel will check the system
approximately twice per week, and will sample the effluent according to permit
requirements once per week.
13. Health and Safety Oversight
Analytical testing of the soils, as reported in the HASP Addendum, did not warrant
worker protection measures. Nonetheless, ECT personnel will conduct tailgate meetings
as needed and will oversee the initial excavation of the trenches and pits in the Project
Segment. Primarily, ECT will look for readily identifiable coal tar that was not
encountered in the borings. As a conservative measure, air monitoring will also be
conducted with an organic vapor analyzer, provided background concentrations from
construction equipment and vehicular emissions do not interfere excessively. Air
sampling for laboratory analysis will be performed if warranted. Reports of the' findings
will be completed and submitted to Clearwater Gas System or its legal counsel.
14. Excess Soil Testing, Transportation and Disposal
During the above-mentioned conference call, the handling of excess soils from the
Project Segment was also discussed. In summary, the City and Clearwater Gas System
will select a location suitable for stockpiling these Project Segment soils. ECT and its
subGontractors will prepare and maintain the stockpile area. Westra personnel will truck
excess Project Segment soils into the area. Those soils may be used in the Project
Segment, but not elsewhere, unless/until analytical testing by ECT confirms they are
clean fill. ECT will collect the samples and obtain laboratory analyses to determine if the
soils canbe used as clean fill elsewhere, or if the City/Gas System will need to have the
soils transported and disposed of at a properly permitted treatment facility or landfill.
ECT can subcontract the loading, transportation and disposal (T &D) of excess soils if it
is needed and authorized by Clearwater Gas System and/or the City.
Ee,
Envlronmen/sl Consulting & Technology, Inc.
T:IMarkICGSIMyrtle Avenue Road ProjectlCGS - Proposal- HASP SSAR Dewatering -3a.doc
Mr. Brian Langille, P.E.
February 25,2005
Page 6 of7
15. Reporting
ECT will maintain field activity logs, sampling logs, analytical test reports, and any
disposal manifests, as well as related subcontractor invoices. ECT will complete the
NPDES Discharge Monitoring Reports (DMRs) required by the Generic Permits. After
project completion, ECT will prepare a project activities report documenting all
oversight, media manageinent, and proper disposal. A short form source removal report
documenting only the media disposal can also be prepared at the City/Gas System's
request.
ECT will prepare status reports at least with every invoice and as requested by the City or
Clearwater Gas System. ECT will attend coordination and planning meetings as
warranted or requested.
FEES AND CONDITIONS
ECT proposes to provide the professional services at our current rates, listed on the
attached fee schedule, and in accordance with the terms already in effect between ECT
and Clearwater Gas ,System. Our licenses and insurance certificates are on file and are
available upon request. Due to the nature of the project and significant time variables
beyond our control, we propose continuing to provide these services on a time and
materials basis. Following is a breakdown of the estimated future fees and the estimated
total fees (past and future) for this project, using a 5% markup, 5% for miscellaneous
items, and a contingency factor of 15%.
ESTIMATED FUTURE COSTS
Dewatering Treatment System Rental and Fueling (up to 12
weeks of operation). (Average Daily Cost = $630)
Treatment System Setup, Excavation Health and Safety
Oversight (up to 3 half-days/week, up to 12 weeks), treatment
system checks (2/week), laboratory analytical (l/week), data
evaluations, consultations, reporting, project management.
Staging, Management, and Transportation and Disposal of up
to 300tons of excess soil if impacted.
Contingency Budget of 15%
TOTAL ESTIMATED FUTURE COSTS
TOTAL COSTS TO DATE
$55,000
$50,000
$22,000
$19,000
$146,000
$54,000
TOTAL ESTIMATED PROJECT COSTS = $200,000
(including Contingency)
T:IMarklCGSlMyrtle Avenue Road ProjectlCGS - Proposal- HASP SSAR Dewatering -3a.doc
Ee,
Envlronmentsl Consulting & Technology, Inc.
Mr. Brian Langille, P.E.
February 25, 2005
Page 7 of7
Variables beyond our control include the duration of trenching activities needing
oversight and dewatering needing treatment. For those cases, reasonable assumptions
have been made, as noted in the cost table, and were based on discussions with City and
Westra personnel. Every effort will be made to reduce actual costs, and a monthly status
report with actual versus budgeted costs will be provided to Clearwater Gas System.
Work in the area is expected to take anywhere from 6 to 12 weeks. Inspection for coal
tar in trenches should only be needed during limited times and milestones during the
trenching and utility construction. The dewatering treatment system will be shut down if
dewatering rates drop, to save on system monitoring and fueling costs. For areas
producing low flows, additional tanks can be used to further reduce the system operating
costs. A significant contingency budget line item is included, to allow for extended
project operation due to construction delays or the management of other contingencies.
CLOSING
ECT appreciates the opportunity to provide our services to Clearwater Gas System on
this important project. If you have any questions or need additional information about
,this status report and proposal, please do not hesitate to call me at (813) 289-9338,
extension 332. I look forward to working with you to complete this project.
L CONSULTING & TECHNOLOGY, INC.
0" Amram, P.E.
ngmeer
PJA:deb
Enclosures: 2005 Fee Schedule
Cost Estimate Tables
~~
JJ::" I ,
Environmental Consulting & Technology, Inc.
T:IMarklCGSIMyrtleAvenue Road ProjectlCGS - Proposal - HASP SSAR Dewatering -3a.doc
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