HomeMy WebLinkAboutAmendment to Professional Services Agreement with Tetra Tech for post-closure ground water monitoring at Story Mill Landfill Commission Memorandum
REPORT TO: Honorable Mayor and City Commission
FROM: Dustin Johnson, Project Engineer
Richard Hixson, City Engineer
SUBJECT: Amendment to Professional Services Agreement with Tetra Tech Inc. For continued post-closure ground water monitoring at the Story Mill Landfill.
MEETING DATE: November 21, 2011
AGENDA ITEM TYPE: Consent
RECOMMENDATION: Authorize City Manager to sign.
BACKGROUND: Since the City of Bozeman has been required by the Montana Department
of Environmental Quality (DEQ) in 1994 Tetra Tech (previously Maxim Technologies) has been contracted with the City to assist in the work. The nature of the contract has been to assist the City of Bozeman in sampling, maintaining, and monitoring post closure parameters at the Story
Mill Landfill to keep the landfill in compliance with State and Federal regulations.
Each year Tetra Tech prepares a task order outlining the proposed monitoring costs for the upcoming fiscal year. Ground water sampling events typically take place twice a year (once in July and once in December). Tetra Tech takes the samples, processes the data, and prepares a
report for the DEQ for each event. The annual cost for the Tetra Tech’s services typically cost
from about $45,000 to $55,000. These annual costs have been budgeted for in the post closure
budget for the landfill for at least the next 30 years. Currently the post closure fund has $1,627,885.93 to cover all future maintenance and monitoring costs.
The proposed cost for this task order is $52,191.73. Included in this task order are extra
labor hours in the event that extra service time is required to troubleshoot something at the
landfill.
FISCAL EFFECTS: The entire project will be funded through the Solid Waste Landfill
Closure/Post-Closure Fund.
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ALTERNATIVES: As suggested by the City Commission.
Attachments: Task Order from Tetra Tech Inc.
Report compiled on: 11/8/2011
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TASK ORDER
DECEMBER 2011 AND JUNE 2012 ASSESSMENT MONITORING
AND
OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
November 8, 2011
CLIENT: CONSULTANT:
The City of Bozeman Tetra Tech, Inc.
P.O. Box 1230 851 Bridger Drive, Ste 6
Bozeman, Montana 59711-1230 Helena, MT 59715
Attention: Mr. Dustin Johnson Attention: Mr. Mark F. Pearson
SCOPE OF SERVICES:
Groundwater Monitoring: Two groundwater monitoring events will be scheduled. These will be in
December 2011 and June 2012. Tetra Tech will perform groundwater monitoring in accordance
with the Tetra Tech’s Groundwater Monitoring Sampling Analysis Plan (September 17, 2010) for
the landfill.
December 2011 Assessment Monitoring
During December 2011, Tetra Tech will conduct an assessment groundwater monitoring event. A
dedicated pump will be purchased for monitoring well MW-5. Water samples will be collected a
total of 17 locations. This includes 15 monitoring wells (MW-4, MW-5, MW-6, MW-7A, MW-8A,
MW-9A, MW-10, MW-11, MW-12, MW-13, MW-14, MW-15, MW-16 (proposed), LF-2, and LF-3)
and two private water sources (McIlhattan Seep and McIlhattan Veterinary Clinic well). A new
monitoring well MW-16 which is scheduled to be drilled and completed approximately 200 feet
north of well MW-6, has been included in the sampling list. In addition, well LF-2 has been
included. Water levels will be measured in all monitoring wells at the landfill prior to purging the
wells for sampling. In addition, water levels will also be measured in wells MW-7B, MW-8B, and
MW-9B.
Other field parameter measurements, including temperature, pH, and specific conductivity (SC),
will be collected at each well during purging to insure that formation water is being collected. All
well samples collected during December 2011 will be analyzed for constituents listed in Appendix
I, 40 CFR Part 258 (July 1, 2008) in ARM 17.50.1306 plus chloride, sulfate, nitrate/nitrite, pH,
conductivity, iron, vanadium, zinc, and dichlorodifluoromethane. Therefore, every sample will be
submitted for the “Full Analysis” that could include up to 16 metals (Table 3 in Tetra Tech’s
Groundwater Monitoring Sampling and Analysis Plan). Well LF-3 will be sampled for volatile
organic compounds (VOCs, Method 524.2 or 8260) and nitrate/nitrite.
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Two quality assurance/quality control (QA/QC) samples will be collected/prepared for the
December 2011 assessment monitoring event: 1) A duplicate sample will be collected and
submitted for analysis of all constituents included in Table 3 of Tetra Tech’s Groundwater
Monitoring Sampling and Analysis Plan and 2) A trip blank will be prepared by the analytical
laboratory, shipped with the sample bottles, accompany sample bottles in the field, and returned to
the laboratory for analysis of volatile organic compounds (VOCs) listed Tetra Tech’s Table 3.
June 2012 Assessment Monitoring
During June 2012, Tetra Tech will conduct an assessment groundwater monitoring event where
water samples will be collected from 15 monitoring wells (MW-4, MW-5, MW-6, MW-7A, MW-8A,
MW-9A, MW-10, MW-11, MW-12, MW-13, MW-14, MW-15, MW-16 (proposed), LF-3, and LF-3)
and two private water sources (McIlhattan Seep and McIlhattan Veterinary Clinic well). A new
monitoring well MW-16 which is scheduled to be drilled and completed approximately 200 feet
north of well MW-6, has been included in the sampling list. In addition, well LF-2 has been
included. Water levels will be measured in all monitoring wells at the landfill prior to purging the
wells for sampling. In addition, water levels will also be measured in wells MW-7B, MW-8B, and
MW-9B.
Field parameter measurements including temperature, pH, and SC will be collected at each well
during and at the conclusion of purging. This will be done to insure that formation water is being
collected when sampling is conducted. Dissolved oxygen (DO) and oxidation-reduction potential
(ORP) data will also be collected in the same manner using field multi-meter. Downhole or flow-
through (during pumping) measurements will be collected from each well where possible.
In accordance with the Montana Department of Environmental Quality (DEQ) approval letter dated
May 31, 1996, water samples collected in June monitoring events will be analyzed for the “Full
Analysis” (Table 3 in Tetra Tech’s Groundwater Monitoring Sampling and Analysis Plan) and
“Partial Analysis” (Table 4 in Tetra Tech’s Groundwater Monitoring Sampling and Analysis Plan).
Samples collected from seven monitoring wells: MW-4, MW-5, MW-6, MW-7A, MW-8A, MW-9A,
and LF-3 will undergo the “Partial Analysis”. Samples collected from the remaining wells/sites will
be submitted for the “Full Analysis” that could include up to 16 metals. Both Partial and Full
Analysis are inclusive of the constituent list in Appendix I, 40 CFR Part 258 (July 1, 2008) in ARM
17.50.1306 plus chloride, sulfate, nitrate/nitrite, pH, conductivity, and dichlorodifluoromethane.
Two QA/QC samples will be collected/prepared for the June 2012 assessment monitoring event:
1) A duplicate sample will be collected from a downgradient monitoring well and submitted for
analysis of volatile organic constituents listed in Tetra Tech’s Table 3 and 2) A trip blank will be
prepared in the laboratory, shipped to the sampling crew with the sample bottles, and returned to
the laboratory for analysis of volatile organic constituents listed in Tetra Tech’s Table 3.
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Landfill Gas Sample Collection and Analysis
Two landfill gas sample collection and analysis events will be conducted at the landfill gas
extraction system (LGES) flare during the groundwater monitoring events (in December 2011 and
June 2012). This will be for the purpose of demonstrating compliance with the air quality permit. In
each monitoring event, a Tetra Tech scientist will fill two Tedlar® sample bags with landfill gas from
an access port located between the blower and flare. Each sample will be submitted for laboratory
analysis of parameters listed in Table I of Air Quality Permit # 2951-00. Upon receiving the landfill
gas analytical results, Tetra Tech will forward a copy of the lab report to the City and DEQ Air and
Waste Management Bureau.
Groundwater Monitoring Reporting and Project Management
There will be two levels of reporting following the December 2011 and June 2012 groundwater
monitoring events. The first level of reporting will be one page reports, summarizing the results of
the monitoring, sent to DEQ departments following receipt of laboratory reports from landfill gas
and groundwater sample collection events. The one page, letter reports will be sent to DEQ Air
Resources Management – Air Compliance Section and DEQ Solid Waste Regulatory Program.
The second level of reporting will be the preparation of a groundwater monitoring report following
each of the two groundwater monitoring events. The report will summarize the results of the
monitoring including activities undertaken, monitoring methods, results, limited data analysis,
and statistical analysis. Data and statistical analysis will also be conducted in accordance with
Tetra Tech’s Groundwater Monitoring Sampling and Analysis Plan. The report will be submitted
as a draft version to the City of Bozeman for review and comment. Tetra Tech will incorporate any
changes or comments requested by the City and finalize the report. Upon receiving approval from
the City, the final report will then be forwarded to DEQ Solid Waste Regulatory Program as a
partial paper copy and an electronic copy. The partial paper copy to the DEQ will include report
text, figures, summary tables, time series plots, and plots of statistical results.
Project management will consist of scheduling of field events; review of invoicing and budget; and
communication with the City of Bozeman, DEQ, analytical laboratory personnel, and other
pertinent parties. Project management will also include preparation of the succeeding monitoring
task order anticipated in November 2012.
Additional Services
Additional field and reporting services include monthly monitoring of landfill gas probes on the
margins of the site for methane and other gas concentrations, monthly monitoring of flare
operation and gas concentrations, inspection of the landfill gas extraction (LGE) well heads, and
any light maintenance needed with the flare or LGE system. This also includes a “miscellaneous
field, liaison, and reporting services that would be conducted on an as-requested basis by the City
of Bozeman. Further detail of Tetra Tech’s services is contained in the Estimated Budget in
Attachment A.
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PERIOD OF PERFORMANCE: Activities covered in this task order will begin on December 1,
2011 and continue through November 30, 2012. Groundwater monitoring activities will be
performed during December 2011 and June 2012. Data analysis and report preparation will follow
the conclusion of each of the monitoring events and receipt of laboratory results. Each
groundwater monitoring report will be submitted to the City within eight weeks of receiving the final
laboratory report. Following review and approval of the draft report by the City, each report will be
finalized and submitted to DEQ within two weeks of receipt of comments from the City and no later
than 90 days from completion of groundwater sampling.
COMPENSATION: Estimated costs to complete the foregoing scope of services are not to
exceed $52,192. Attachment A details these costs. The services will be conducted on a time and
materials basis.
SPECIAL CONDITIONS: Execution of this Task Order constitutes acceptance of all terms and
conditions contained in Tetra Tech’s Professional Services Agreement with the City of Bozeman,
dated January 3, 1994 and Amendment Nos. 1, 2, 3, and 4 of the Professional Services
Agreement dated July 31, 1995; January 1, 1996; March 17, 1997; and December 10, 2001,
respectively.
CLIENT: CONSULTANT:
City of Bozeman Tetra Tech
By: By:
Its: Its:
Date: Date:
NOTICE OF CONFIDENTIALITY This Task Order (including attachments) contains information confidential to Tetra
Tech, Inc., its subsidiaries, and subcontractors. It is intended only for City of Bozeman to consider Tetra Tech
providing professional services at the Bozeman Landfill. Any other use is prohibited, without the prior written consent
of Tetra Tech.
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ATTACHMENT A
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GROUNDWATER MONITORING
DECEMBER 2011
UNITS RATE COST
LABOR
Sr. Hydrogeologist, per hour 2 $150.00 $300.00
Project Manager / Hydrogeologist, per hour 37 $88.00 $3,256.00
Staff Scientist, per hour 17 $75.00 $1,275.00
Total Labor:$4,831.00
DIRECT COSTS
Company Truck Mileage, per mile 30 $0.75 $22.50
Water Level Meter, per day 3 $25.00 $75.00
T-pH-SC Meter, per day 3 $25.00 $75.00
Replacement dedicated pump (Tempest® up to 40 feet depth), each 1 $194.35 $194.35
Note: Dedicated pump purchase is included in the event that a pump breaks down
Well MW-5 dedicated pump (Hurricane® up to 150 feet depth), each 1 $1,240.85 $1,240.85
Note: Includes low-flow controller, tubing, and storage poly box
Sampling Disposables (bailer, low-flow tip, filter), each 15 $30.00 $450.00
Lab Sample Shipping (by Fed Ex overnight to lab), estimate 1 $150.00 $150.00
Lab Analysis (VOCs), each 18 $111.44 $2,005.83
Lab Analysis (inorganics - full list), each 16 $241.64 $3,866.21
Lab Analysis Vet Well, each 1 $353.07 $353.07
Total Direct Costs:$8,432.81
SUBTOTAL DECEMBER 2011 GROUNDWATER MONITORING:$13,263.81
ATTACHMENT A
Date Submitted: November 8, 2011
ESTIMATED BUDGET
DECEMBER 2011 AND JUNE 2012 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
Tetra Tech Page 1 of 421
ATTACHMENT A
Date Submitted: November 8, 2011
ESTIMATED BUDGET
DECEMBER 2011 AND JUNE 2012 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
GROUNDWATER MONITORING (Continued)
JUNE 2012
UNITS RATE COST
LABOR
Sr. Hydrogeologist, per hour 2 $150.00 $300.00
Project Manager / Hydrogeologist, per hour 28 $88.00 $2,464.00
Staff Scientist, per hour 15 $75.00 $1,125.00
Total Labor:$3,889.00
DIRECT COSTS
Mileage 30 $0.80 $24.00
Water Level Meter, per day 3 $25.00 $75.00
YSI Multimeter w/ 20 m cable, per week 1 $580.00 $580.00
Note: Assume rental from Geotech Environmental if Tetra Tech meter not available
Dedicated pump (Tempest® up to 40 feet depth), each 1 $194.35 $194.35
Note: Dedicated pump purchase is included in the event that a pump breaks down
Sampling Disposables (bailer, low-flow tip, filter), each 15 $30.00 $450.00
Lab Sample Shipping (by bus overnight to lab), estimate 1 $150.00 $150.00
Lab Analysis (VOCs), each 18 $111.44 $2,005.83
Lab Analysis (inorganics - partial list) 7 $114.95 $804.68
Lab Analysis (inorganics - full list), each 9 $241.64 $2,174.74
Lab Analysis Vet Well, each 1 $353.07 $353.07
Total Direct Costs:$6,811.67
SUBTOTAL JUNE 2012 GROUNDWATER MONITORING:$10,700.67
LANDFILL GAS SAMPLING (two events)
UNITS RATE COST
LABOR
Project Manager / Hydrogeologist, per hour 4 $88.00 $352.00
Total Labor:$352.00
DIRECT COSTS
Lab Analysis 2 $422.63 $845.25
Shipping, est. 2 $69.00 $138.00
Total Direct Costs:$983.25
SUBTOTAL LANDFILL GAS SAMPLING:$1,335.25
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ATTACHMENT A
Date Submitted: November 8, 2011
ESTIMATED BUDGET
DECEMBER 2011 AND JUNE 2012 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
REPORTING, STATISTICAL ANALYSIS, AND PROJECT MANAGEMENT
REPORTING AND STATISTICAL ANALYSIS (preparation of two monitoring reports)
UNITS RATE COST
LABOR
Senior Statistics Engineer, per hour 4 $175.00 $700.00
Sr. Hydrogeologist, per hour 4 $150.00 $600.00
GIS/Statistics Analyst, per hour 56 $95.00 $5,320.00
Project Manager / Hydrogeologist, per hour 60 $88.00 $5,280.00
Staff Scientist, per hour 10 $75.00 $750.00
CAD Operator, per hour 10 $75.00 $750.00
Clerical, per hour 6 $52.00 $312.00
Total Labor:$13,712.00
DIRECT COSTS
Photocopies, estimate 1,000 $0.10 $100.00
Reprographics, estimate 2 $50.00 $100.00
Total Direct Costs:$200.00
PROJECT MANAGEMENT
UNITS RATE COST
LABOR
Sr. Hydrogeologist, per hour 4 $150.00 $600.00
Project Manager / Hydrogeologist, per hour 24 $88.00 $2,112.00
Administrative Support, per hour 12 $60.00 $720.00
Clerical, per hour 6 $52.00 $312.00
Total Labor:$3,744.00
SUBTOTAL REPORTING, STATISTICAL ANAYSIS, AND PROJECT MANAGEMENT:$17,656.00
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ATTACHMENT A
Date Submitted: November 8, 2011
ESTIMATED BUDGET
DECEMBER 2011 AND JUNE 2012 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
ADDITIONAL SERVICES
UNITS RATE COST
MONTHLY METHANE MONITORING
(Assume 3.5 hours per monitoring event per month for 12 months and use of City of Bozeman meters)
LABOR
Project Manager / Hydrogeologist, per hour 42 $88.00 $3,696.00
Total Labor:$3,696.00
MONTHLY FLARE AND LANDFILL GAS EXTRACTION MONITORING/INSPECTION
(Assume 2 hours per monitoring event per month and use of City of Bozeman meters)
LABOR
Project Manager / Hydrogeologist, per hour 30 $88.00 $2,640.00
Total Labor:$2,640.00
MISCELLANEOUS FIELD, LIAISON, AND REPORTING SERVICES
(Conducted on an as-requested basis by the City of Bozeman)
LABOR
Sr. Hydrogeologist, per hour 2 $150.00 $300.00
Project Manager / Hydrogeologist, per hour 24 $88.00 $2,112.00
Administrative Support, per hour 4 $60.00 $240.00
Clerical, per hour 4 $52.00 $208.00
Total Labor:$2,860.00
DIRECT COSTS
Company Truck Mileage, per mile 50 $0.80 $40.00
Total Direct Costs:$40.00
SUBTOTAL ADDITIONAL SERVICES:$9,236.00
TOTAL TASK ORDER: $52,191.73
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