HomeMy WebLinkAbout38. Professiional Services Agreement for 2020 Knapp Street QuarriesCity
of�
Oshkosh
MEMORANDUM
TO: Honorable Mayor and Members of the Common Council
FROM: Mark A. Rohloff, City Manage r
DATE: December 5, 2019
RE: Professional Services Agreement for 2020 Knapp Street Quarries and Timmerman Landfill
Operations and Maintenance Support / AECOM Technical Services, Inc. (AECOM) ($72,600)
The Department of Public Works has utilized AECOM Technical Services, Inc. (AECOM) for various
environmental engineering needs at the Quarry Park Landfill located on Knapp Street since 1979 and at the
Timmerman Landfill since 1993. The active venting system has been operating at Quarry Park since spring of
2010. AECOM continues to report no measurement of methane at the various monitoring points. An operational
pilot study was completed between the fall of 2015 and the spring of 2016 to determine if the active venting
system could be converted to a passive system. The study results indicated the system will need to continue to
operate in an active setting. It is anticipated the Wisconsin Department of Natural Resources (WDNR) will
require several more years of active collection of methane gas before considering a reduced operation or
switching to passive collection.
In 2019, AECOM submitted a plan modification to the WDNR proposing to reduce the sampling frequency of
the gas probes from quarterly to semiannually due to low methane concentrations being detected; remove
volatile organic compound sampling from monitoring wells MW -6 and MW -8; and remove sampling for pH,
temperature, specific conductance, and turbidity from the environmental monitoring requirements for
monitoring wells MW -9 and MW -10. The plan modification was approved by the WDNR on October 8, 2019.
This agreement will cover the required monitoring and maintenance at both former landfills for calendar year
2020. The scope of services includes continued methane gas monitoring, reporting to the WDNR, inspecting the
methane collection system, and providing equipment maintenance recommendations.
This agreement is for $72,600. The cost for these gas monitoring services will be allocated to the operating budget
(Account 02120470-6401/Garbage Collection & Disposal). This contract amount represents a reduction in fee
from 2019 of $1,200. This reduction is made possible through the approved plan modification from the WDNR.
Chapter 12 of the Municipal Code provides that professional services of a specialized nature, including
engineering services, may be procured without the use of formal, sealed quotes. I have reviewed this agreement
and in accordance with Section 12-16 of the Code, I am hereby submitting this report regarding this professional
services agreement.
MAR/jer
1:\ Engineering \2020CONTRACTS\AECOM 2020 Landfill Mon\AECOM CC Memo -Agreement -2020 Quarry Prk & Timmerman LF_12-5-19.docx
ASCOM
Mr James Rabe, PE, CPESC
Director of Public Works
City of Oshkosh
215 Church Avenue
Oshkosh, WI 54901
RECEIVED
NOV 2 6 2019
DEPT OF PUBLIC WORKS
OSHKOSH, WISCONSIN
AECOM
558 North Main Street
Oshkosh, WI 54901
aecom mm
November 25, 2019
AECOM Proposal No.
OPP-830131
Proposal for Knapp Street Quarries and Timmerman Landfill Operations and Maintenance Support during
the 2020 Calendar Year
Dear Mr Rabe,
AECOM Technical Services, Inc (AECOM) has prepared this proposal for continued methane monitoring, sampling,
landfill gas collection system operation and maintenance, and reporting at the former Faber Quarry and former
Oshkosh Stone Company Quarry (collectively known as the Knapp Street Quarries) and groundwater and methane
monitoring, sampling and reporting at the former Timmerman Landfill during the 2020 calendar year (CY2020) This
proposal provides a summary of the specific project backgrounds, proposed scope of services and estimated costs for
continued environmental monitoring at each site
Task 1 — Knapp Street Quarries
Background
The scope of services presented below is based on recommendations provided in the Operation Manual and in
accordance with Wisconsin Department of Natural Resources (WDNR) Solid Waste requirements
The gas collection system was installed and started operation in 2010 AECOM personnel have continued monitoring
the system and continually work at balancing the gas recovery. The system has had a positive influence on the
reduction of methane gas and thus reduced the risk of methane migration off-site. At this time the monitoring points
show methane concentrations below 2 5% by volume. The WDNR has conditionally approved a plan toward reduced
operation of the landfill gas extraction system That plan requires that there is effective gas recovery when cycling the
blower operations (6 -hours on and 4 -hours off) over a 4 -month period and following the closure of sections of vent
piping that have had less than detectable readings for methane for a consecutive 12 -month period. This plan was
initiated in 2015 Prior to and during the test period, system mechanical issues occurred that prolonged the testing
program, which included
Replacement of the blower motor (twice, covered by warranty).
Replacement of the exhaust stack (collapsed prior to the test commencing).
Modifications to the grease tube operation to provide a constant temperature for the equipment
AECOM worked with a contractor to make the repairs and modifications The testing was completed in September
2016. Based on the results of the reduced -operation testing, and with concurrence from the WDNR, the active
system is still required to control landfill gases. Another reduce- operation test will be planned in the next 5 years to
verify conditions at that time
In 2016, it was observed that several of the flush -mount protective covers surrounding the monitoring wells located in
sidewalk or parking lot pavement were no longer able to protect the integrity of the wells In 2018, it was observed
some of the LFG control vaults had also been damaged. The damage was likely due to age of the structures, damage
from snow plowing and damage to the surrounding surface from freeze -thaw cycles (uneven grade) The repairs to
the flush -mount protective covers were completed in 2019 The repairs to the vaults may occur in 2020 if any of the
proposed budget is unutilized
K \PROPOSAL\Cay of Oshkosh\OPP-830131_2020 Knapp St & 7immerman\OPP-830131 2020 Knapp
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AECOM
In the summer of 2017, a WDNR Solid Waste Engineer inspected the site. AECOM and City Staff completed the site
inspection with the WDNR representative All items that were identified during this inspection were corrected by
AECOM or City staff, and AECOM prepared a letter detailing the corrective actions and submitted it to the WDNR
Scope of Services
Methane Gas Monitoring
AECOM proposes to continue to conduct methane monitoring activities based on the schedule provided in the WDNR
conditional approval letter dated April 15, 2014 and as presented in the chart below,
Location Identification Parameters Frequency
OW -3, GW -12, GW -20, GW -20A,
Oxygen, methane, carbon dioxide,
GW -22, GW -23, GW -23A, GW -24,
balance gas, groundwater level Monthly
Gas Monitoring Wells GW -24A, GW -25, and GW -25A
monitoring, vacuum
-10, GW -11, GW-
GW -2, GW -9, GW -10,
Oxygen, methane, carbon dioxide,
14, GW -17, and
balance gas, groundwater level Quarterly
monitoring
Gas Extraction Wells WHA through WH -15 and W-1
Oxygen, methane, carbon dioxide, Semi -Annually
throuah W-9
balance aas. vacuum
Header Pipe at the Blower
Station Blower (inflow) Vacuum before blower Monthly
Vent Pipe Blower (discharge) Oxygen, methane, carbon dioxide, Monthly
pressure after blower, velocity/flow
Condensate Sample Point Condensate Sample Point Field pH, TBD If needed
NOTES
1 The following information will be recorded during each sampling event. ambient air temperature, barometric pressure, trends in
barometric pressure, ground surface conditions, type of meter used, and latest meter calibration dale.
2 Monitoring has since been discontinued in the following gas monitoring wells: GW -1, GW -3, GW -4, GW -5, GW -6, GW -7, GW -8,
GW -15, and GW -16 and the following observation wells, OW -1 and OW -2, which were abandoned
3 WH -7 and W-2 do not exist
At each gas monitoring well and system sampling port the vacuum pressure, initial percent of the LEL of methane
(percent LEL methane), percent methane gas (percent methane), percent oxygen (percent 02), percent of carbon
dioxide (percent CO2), air flow (CFM), and groundwater levels will be measured The LEL is the minimum
concentration of a particular combustible gas or vapor necessary to support its combustion in air. The LEL of
methane gas is 5% methane by volume Observations (such as ground condition, barometric pressure, and
monitoring well conditions) will also be recorded.
After initial readings are recorded, monitoring wells will be purged with a pump at a rate of two liters per minute.
Continuous percent LEL methane will be measured as the well is purged. A final reading will be recorded when
consecutive methane readings are within +10% LEL Final measurements include percent LEL methane, percent
methane gas, percent CO2 and percent 02 The length of time required to achieve the final reading is typically unique
to each well.
Based on the 2017 WDNR site inspection, AECOM has added a checklist to be completed during each site visit The
checklist includes all items identified during the site inspection If deficiencies are noted, AECOM staff will inform the
City and assist with developing a solution
Schedule and Reporting
Methane sampling and system O&M will be completed in accordance with the above schedule through December
2020 The monitoring data will be summarized and electronically submitted to the City and WDNR GEMS database
K \PROPOSAL\City of Oshkosh\OPP-830131_2020 Knapp St & Timmerman\OPP-830131 2020 Knapp
St & Timmerman Proposal doc 2/e
A=COM
on a semiannual basis On an annual basis, a report will be submitted to the WDNR (including cover letter with
discussion and conclusions) AECOM will Immediately notify the City of any new methane wells that Indicate an
exceedance of 25% of the LEL
In 2019, AECOM discussed a potential for reduction of monitoring with WDNR staff. Based on the historical
monitoring results, the WDNR Indicated they were not willing to consider any reduced monitoring at this time
Task 2 — Timmerman Landfill
Background
AECOM has been assisting the City with environmental services related to the Timmerman Landfill since 1978.
These services have included groundwater and methane monitoring, landfill cap thickness verification, laboratory
testing, data review, and closure planning In response to the WDNR Notice of Violation dated August 2, 2006,
AECOM completed a Site Assessment Report (SAR) in compliance with Wisconsin Administrative Code Section
NR 700 and subsequently installed three additional groundwater monitoring wells. In 2008 and early 2009, AECOM
completed the closure of the site under the WDNR Remediation and Redevelopment (RR) program and the site was
transferred to the WDNR Solid Waste Program In 2010, AECOM recommended the abandonment of six monitoring
wells The WDNR subsequently requested additional investigation regarding the presence of a passive methane
collection trench, which AECOM completed using test pits. Based on the results of the test pit investigation and
AECOM's recommendation in 2010, the WDNR approved the abandonment of the six wells and required the
installation of two gas probes (in addition to the four already installed at the site) for additional methane monitoring in
a letter dated February 2013
In the summer of 2017, a WDNR Solid Waste Engineer inspected the site AECOM and City Staff completed the site
inspection with the WDNR representative. All items that were identified during this inspection were corrected by
AECOM or City staff, and AECOM prepared a letter detailing the corrective actions and submitted it to the WDNR
In 2019, AECOM submitted a plan modification to the WDNR proposing to reduce the sampling frequency of gas
probes from quarterly to semiannually due to low methane concentrations being detected An exemption was granted
in accordance with s NR500 08(4), Wis. Adm Code, to reduce gas probe sampling from quarterly to semiannually
The request also proposed to remove volatile organic compound (VOC) sampling for MW -6 and MW -8, and to remove
sampling for field parameters (pH, temperature, specific conductance, and turbidity) from the environmental
monitoring requirements for groundwater monitoring wells MW -9, and MW -10. This request was approved in the
Conditional Closure Plan Approval Modification and Grant of Exemption for Environmental Monitoring at the Closed -
Timmerman Faint Landfill, Winnebago County, Monitoring #4203 letter from the WDNR dated October 8, 2019
Scope of Services
This proposal includes two rounds (semiannual) of groundwater monitoring, subcontract analytical laboratory services,
and project reporting obligations through CY2020. In addition, landfill gas will be monitored semi-annually and
reported to the WDNR until approval to discontinue the methane monitoring and abandon the wells is achieved.
Groundwater samples will be collected according to the WDNR-approved monitoring requirements in the chart below.
Location Parameters Frequency
MW -1, PZ -4, PZ -5, MW -6, MW -7, PZ -7, Alkalinity, Chloride, Hardness, Groundwater
PZ -7D, MW -8, PZ -1, PZ -8, PZ -9, Elevation, field pH, field temperature, field Semi-annually
SQDMW-1, PZ -10 (VOC not required for conductivity
MW -6 and 8) Volatile Organic Compounds (VOCs) Annually
Groundwater monitoring wells will be purged prior to collecting the samples and field monitoring parameters
K. WROPOSAUCity of Oshkosh\OPP-830131_2020 Knapp St & TimmermaMOPP-830131_2020 Knapp
St & Timmerman Proposal door 3/8
AECOM
Gas monitonng points (GP -1 through GP -6) will be monitored semi-annually for methane, oxygen, and carbon dioxide,
per the methods described above under the Knapp Street Quarries Scope of Services, as required by the WDNR.
Readings for barometric pressure, pressure trend, and temperature will also be collected during monitoring activities.
Based on the 2017 WDNR site Inspection, AECOM has added a checklist to be completed during each site visit The
checklist includes all Items Identified during the site Inspection If deficiencies are noted, AECOM staff 'Anil Inform the
City and assist with developing a solution.
Schedule and Reporting
Groundwater sampling will be completed twice annually (April and October), and gas monitoring will be completed on
a semi-annually basis (January, and December 2020). The monitoring data will be summarized and electronically
submitted to the City and WDNR on a semi-annual basis
Estimated Fees
The following summarizes the proposed tasks and estimated fees
Task
Fee
Task 1 — Knapp Street Quarries
Methane Monitoring and System Maintenance and Operation during CY2020 Includes
H2O level meter, methane meter, CO2 and 02 meter and rental costs
$35,850
WDNR Reporting, GEMS Database Updates, and Project Management1$
3.200
Task 1 Total
$49,050
Task 2 —Timmerman Landfill
Groundwater (2 events)/LFG Monitoring (2 events) during CY2020
Includes H2O level meter, methane meter, CO2 and 02 meter rental costs
$14,650
Subcontracted Laboratory
$2,500
WDNR Reporting, GEMS Database Updates, and Project Management
J§ 400
Task 2 Total
Total Project Fees
In=
$72,600
Please note, AECOM was able to reduce the overall 2020 budget by $1,200 as compared to 2019 by obtaining the
approved Plan Modification of reduced monitoring for Timmerman Landfill. This reduction in cost will continue into the
future as long as site conditions do not negatively change.
Future Services to be Combined with Knapp Street Quarries and Timmerman
Landfill
We anticipate the installation, start-up, and operation of the Kienast and Paulus Quarry landfill gas collection system
will occur In 2020. Startup, operation, and maintenance costs for 2020 associated with the Kienast and Paulus
Quarry landfill gas system will be incorporated in the construction management agreement for that project. In 2021,
these services are anticipated to be incorporated in the 2021 Landfill Operation and Maintenance Agreement By
combining these services on the multiple sites, AECOM anticipates there will be cost savings to the City during the
operation and maintenance of these sites by effectively scheduling the work required consecutively and in a cost
effective and timely manner.
UPROPOSAUCity of Oshkosh\OPP-830131_2020 Knapp St & Timmerman\OPP-830131_2020 Knapp
St & Timmerman Proposal dom 4/6
A COM
Terms and Conditions
If services to be provided under this proposal require the agents, employees, or contractors of AECOM to enter onto
the Project site, Client shall provide right -of -access to the site to AECOM, Its employees, agents, and contractors, to
conduct the planned field observations or services The services described In this proposal will be provided on a time -
and -material basis. AECOM will not exceed the above estimate without your authorization and approval The
services provided will be performed In accordance with the approved Fee schedule and with the conditions of the
2009 City of Oshkosh Negotiated General Conditions of Service, which are expressly Incorporated into, and are an
integral part of, our contract for professional services
To initiate this work, please sign and return the attached Authorization to the AECOM Oshkosh, Wisconsin office Our
understanding is that the City of Oshkosh will also issue a Purchase Order for all approved tasks Please reference
the AECOM proposal number, OPP-830131, in the Purchase Order that is forwarded to the AECOM Oshkosh Office
We are looking forward to working with you and providing assistance with this project.
If you have any questions or need to clarify a point, please call any of the undersigned at 920-235-0270
Yours sincerely,
Technical Services, Inc
omaXsP, E. (WI) Kevin Brehm, P E. (WI)��
e Associate Vice President
enclosure* Authonzation
K.\PROPOSAL%City of O.-MosMOPP-830131_2020 Knapp St & Tlmmernan0PP-830131 2020 Knapp
Sl & Timmerman Proposal do= 516
A=COM
558 N Main Street
Oshkosh, Wisocnsin 54901
920 236,6710
Authorization
November 25, 2019
1 hereby certify that the necessary provisions have been made to pay the liability, which will accrue under this contract
I hereby authorize AECOM to proceed with the scope of work for Knapp Street Quarries and Timmerman Landfill
Operations and Maintenance Support dunng 2020 Calendar Year as described in AECOM's proposal OPP-830131
dated November 25, 2019, with a budget authorization of $72,600 under the general terms and conditions specified in
the proposal
Signature
Mark A Rohloff
Print Name
City Manager
Title/Organization
Signature
Pamela R Ubng
Print Name
City Clerk
Title/Organization
Signature
Lynn A Lorenson
Print Name
City AHomey
Title/Organization
Signature
Russ Van Gompel
Print Name
Director of Finance
TdletOrganization
Date
Date
Date
Date
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St & Timmerman Proposal do= 6/6