HomeMy WebLinkAboutAmendment to Professional Services Agreement with Tetra Tech Inc for water monitoring Landfill_3 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: December 3, 2012
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 $50,000 to $60,000. These annual costs have been budgeted for in the post closure
budget for the landfill for at least the next 29 years. Currently the post closure fund has $1,545,118 to cover all future maintenance and monitoring costs.
The proposed cost for this task order is $56,960.34. 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: 11/15/12
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TASK ORDER
DECEMBER 2012 AND JUNE 2013 ASSESSMENT MONITORING
AND OTHER SERVICES
BOZEMAN SANITARY LANDFILL
November 9, 2012
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 ‘Assessment’ groundwater monitoring events will be scheduled.
These will be conducted in December 2012 and June 2013. Tetra Tech will perform groundwater
monitoring in accordance with Tetra Tech’s Groundwater Monitoring Sampling Analysis Plan
(September 17, 2010) for the landfill. Groundwater sites to be monitored include13 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, and LF-3) and two private water sources (McIlhattan Seep and McIlhattan Veterinary
Clinic well). In the past several monitoring events, the Department of Environmental Quality
(DEQ) has required that five additional wells (LF-2, MW-7B, MW-8B, MW-9B, and Shop Well
(adjacent to the Bozeman Landfill Shop)) be monitored and samples collected for analysis. In
addition, three new groundwater wells (MW-6B, MW-8C, and MW-16) were drilled and completed
in May 2012. These new wells were monitored and samples collected in June 2012. This task
order assumes that 23 wells/sites will be monitored and sampled. A sampling and analysis matrix
is presented in Table 1 of Attachment A contained in this task order.
December 2012 Assessment Monitoring
Monitoring and collection of water samples will be conducted in 21 monitoring wells (MW-4, MW-
5, MW-6, MW-6B, MW-7A, MW-7B, MW-8A, MW-8B, MW-8C, MW-9A, MW-9B, MW-10, MW-11,
MW-12, MW-13, MW-14, MW-15, MW-16, LF-2, LF-3, and Shop Well) and two private water
sources (McIlhattan Seep and Valley View Veterinary Clinic well). Water levels will be measured
in all monitoring wells at the landfill prior to purging the wells for sampling. Field parameters
including temperature, pH, and specific conductivity will be measured at all stations. Field
parameters will be measured during and at the conclusion of purging the wells.
For the purposes of this task order, the purchase of a dedicated pump is included in the event of
breakdown of one of the dedicated well purging/sampling pumps. Water samples collected will be
analyzed by Pace Analytical Laboratories (in Billings, Montana) for many of the constituents listed
in Appendix I, 40 CFR Part 258 (July 1, 2008) in ARM 17.50.1306 plus chloride, sulfate,
nitrate/nitrite as N, pH, conductivity, iron, vanadium, zinc, and dichlorodifluoromethane.
Therefore, every sample will be submitted for the “Full Analysis” that includes 15 metals (Table 3
in Tetra Tech’s Groundwater Monitoring Sampling and Analysis Plan).Table 3 is contained in
Attachment A. Well samples where only volatile organic compounds (VOCs) and nitrate + nitrite
as N would be analyzed are indicated in Table 1.
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Two quality assurance/quality control (QA/QC) samples will be collected and prepared during the
December 2012 assessment monitoring event. These will be 1) A duplicate sample 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 prepared by the analytical laboratory,
shipped with the sample bottles, travelling with sample bottles in the field, and returned to the
laboratory for analysis of VOCs.
June 2013 Assessment Monitoring
Monitoring and collection of water samples will be conducted in 21 monitoring wells (MW-4, MW-
5, MW-6, MW-6B, MW-7A, MW-7B, MW-8A, MW-8B, MW-8C, MW-9A, MW-9B, MW-10, MW-11,
MW-12, MW-13, MW-14, MW-15, MW-16, LF-2, LF-3, and Shop Well) and two private water
sources (McIlhattan Seep and McIlhattan Veterinary Clinic well). Water levels will be measured in
all monitoring wells at the landfill prior to purging the wells for sampling. Field parameters
including temperature, pH, and specific conductivity will be measured during purging. These
parameters and dissolved oxygen and oxidation reduction potential will be measured at the
conclusion of purging.
In accordance with the DEQ approval letter dated May 31, 1996, water samples collected from
designated wells 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).Tables 3 and 4 are
contained in Attachment A. Therefore, 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” (Table 4).
Samples collected from the remaining wells/sites will be submitted for the “Full Analysis” that
includes 16 metals (Table 3). 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 as N, pH, conductivity, and dichlorodifluoromethane.
Two QA/QC samples will be collected and prepared during the June 2013 assessment monitoring
event: 1) A duplicate sample will be collected from a downgradient monitoring well and analyzed
for the “Full Analysis” (Table 3). 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 VOCs listed
in Table 3.
Other Services:Other environmental services include monitoring and maintenance of the
components of the landfill gas extraction (LGE) system, additional field work or monitoring as
needed, regulatory liaison as needed, and reporting and project management.
Landfill Gas Sample Collection and Analysis
Two landfill gas sample collection and analysis events will be conducted at the LGE system flare
during the groundwater monitoring events (in December 2012 and June 2013). This will be for the
purpose of demonstrating compliance with the air quality permit. In each monitoring event, a
Tetra Tech scientist will conduct monitoring of the LGE system at the flare and then 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 1 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.
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Additional Services
Additional field and reporting services include the following:
• Monthly monitoring of perimeter landfill gas probes for methane and other gas concentrations
• Monthly monitoring of flare operation and gas concentrations
• Inspection and monitoring of the landfill gas extraction (LGE) well heads
• Any light maintenance needs associated with the flare or LGE system or miscellaneous field work
• Additional groundwater monitoring that cannot be covered under assessment monitoring budgets
• Any regulatory liaison and reporting services requested by City of Bozeman
Further explanation of Tetra Tech’s services is contained in the Estimated Budget in Attachment
B.
Reporting and Project Management
There will be two levels of reporting following the December 2012 and June 2013 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. This will include entry of data into the project
database. 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 full or partial paper
copy and an electronic copy. The 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 2013.
PERIOD OF PERFORMANCE:Activities covered in this task order will begin on December 1,
2012 and continue through November 30, 2013. Groundwater monitoring activities will be
performed during December 2012 and June 2013. Data analysis and report preparation will follow
the conclusion of each of the monitoring events and receipt of laboratory results. Each 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.
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COMPENSATION:Estimated costs to complete the foregoing scope of services are not to
exceed $56,960.Attachment B 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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LF-2 x x LF-2 x x
LF-3 x LF-3 x
MW-4 x MW-4 x
MW-5 x x MW-5 x x
MW-6 x x MW-6 x x
MW-6B x MW-6B x
MW-7A x MW-7A x
MW-7B x MW-7B x
MW-8A x x MW-8A x x
MW-8B x x MW-8B x x
MW-8C x MW-8C x
MW-9A x MW-9A x
MW-9B x x MW-9B x x
MW-10 x MW-10 x
MW-11 x MW-11 x
MW-12 x MW-12 x
MW-13 x MW-13 x
MW-14 x MW-14 x
MW-15 x x MW-15 x x
MW-16 x MW-16 x
Shop Well x Shop Well x
McIlhatten Seep x McIlhatten Seep x
Vet Well x Vet Well x
Notes x denotes analysis conducted
A listing of analytical constituents in the Full and Partial Analyses is contained in Attachment A of the Task OrderNitrate+NitriteasNDecember 2012 Monitoring Event June 2013 Monitoring Event
pH&SCpH&SCWellorSiteWellorSiteFullAnalysisPartialAnalysisVOCsTABLE 1
SAMPLING AND ANALYSIS MATRIX
BOZEMAN SANITARY LANDFILL
November 1, 2012
Nitrate+NitriteasNFullAnalysisPartialAnalysisVOCsTetra Tech
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96 of 9814
97 of 9815
ATTACHMENT B
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GROUNDWATER MONITORING
DECEMBER 2012
UNITS RATE COST
LABOR
Sr. Hydrogeologist, per hour 2 $150.00 $300.00
Project Manager / Hydrogeologist, per hour 45 $88.00 $3,960.00
Staff Scientist, per hour 23 $75.00 $1,725.00
Total Labor:$5,985.00
DIRECT COSTS
Company Truck Mileage, per mile 30 $0.60 $18.00
Water Level Meter, per week 1 $75.00 $75.00
T-pH-SC Meter, per week 1 $80.00 $80.00
Replacement dedicated pump (Proactive Monsoon® DTW up to 120 feet depth), each 1 $501.00 $501.00
Note: Dedicated pump purchase is included in the event that a pump breaks down
Sampling Disposables - Filter, each 16 $20.00 $320.00
Sampling Disposables - Bailer, each 2 $6.20 $12.40
Sampling Disposables - Low-flow tip, each 15 $3.00 $45.00
Sampling Disposables - pump tubing, per foot 400 $0.53 $212.00
Sampling Disposables - Miscellaneous, each 23 $3.00 $69.00
Miscellaneous Shipping, estimate 1 $60.00 $60.00
Lab Sample Shipping (by bus overnight to lab), estimate 1 $150.00 $150.00
Lab Analysis (VOCs), each 25 $104.50 $2,612.50
Lab Analysis (inorganics - partial list) 0 $89.10 $0.00
Lab Analysis (inorganics - full list), each 18 $207.90 $3,742.20
Lab Analysis (pH & SC), each 4 $18.70 $74.80
Lab Analysis Vet Well, each 1 $207.90 $207.90
Total Direct Costs:$8,179.80
SUBTOTAL DECEMBER 2012 GROUNDWATER MONITORING:$14,164.80
ATTACHMENT A
Date Submitted: November 9, 2012
ESTIMATED BUDGET
DECEMBER 2012 AND JUNE 2013 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
Tetra Tech Page 1 of 417
ATTACHMENT A
Date Submitted: November 9, 2012
ESTIMATED BUDGET
DECEMBER 2012 AND JUNE 2013 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
GROUNDWATER MONITORING (Continued)
JUNE 2013
UNITS RATE COST
LABOR
Sr. Hydrogeologist, per hour 2 $150.00 $300.00
Project Manager / Hydrogeologist, per hour 35 $88.00 $3,080.00
Staff Scientist, per hour 23 $75.00 $1,725.00
Total Labor:$5,105.00
DIRECT COSTS
Company Truck Mileage, per mile 30 $0.60 $18.00
Water Level Meter, per week 1 $75.00 $75.00
YSI Multimeter w/ 20 m cable, per week 1 $300.00 $300.00
Replacement of Dedicated pump (Proactive Tempest® DTW up to 40 feet depth), each 1 $200.00 $200.00
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
Sampling Disposables - Filter, each 16 $20.00 $320.00
Sampling Disposables - Bailer, each 2 $6.20 $12.40
Sampling Disposables - Low-flow tip, each 15 $3.00 $45.00
Sampling Disposables - pump tubing, per foot 400 $0.53 $212.00
Sampling Disposables - Miscellaneous, each 23 $3.00 $69.00
Miscellaneous Shipping, estimate 1 $60.00 $60.00
Lab Sample Shipping (by bus overnight to lab), estimate 1 $150.00 $150.00
Lab Analysis (VOCs), each 25 $104.50 $2,612.50
Lab Analysis (inorganics - partial list) 7 $89.10 $623.70
Lab Analysis (inorganics - full list), each 11 $207.90 $2,286.90
Lab Analysis (pH & SC), each 4 $18.70 $74.80
Lab Analysis Vet Well, each 1 $207.90 $207.90
Total Direct Costs:$7,717.20
SUBTOTAL JUNE 2012 GROUNDWATER MONITORING:$12,822.20
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 $414.92 $829.84
Shipping, est. 2 $70.00 $140.00
Total Direct Costs:$969.84
SUBTOTAL LANDFILL GAS SAMPLING:$1,321.84
Tetra Tech Page 2 of 418
ATTACHMENT A
Date Submitted: November 9, 2012
ESTIMATED BUDGET
DECEMBER 2012 AND JUNE 2013 ASSESSMENT MONITORING
AND OTHER MONITORING SERVICES
BOZEMAN SANITARY LANDFILL
REPORTING, STATISTICAL ANALYSIS, AND PROJECT MANAGEMENT
STATISTICAL ANALYSIS (preparation of two statistics reports)
UNITS RATE COST
LABOR
Senior Project Manager, per hour 8 $185.00 $1,480.00
Senior Technician, per hour 4 $90.00 $360.00
Staff Engineer, per hour 80 $80.00 $6,400.00
Total Labor:$8,240.00
DIRECT COSTS
Statistica Software, Annual Subscription Fee 1 $80.00 $80.00
Total Direct Costs:$80.00
SUBTOTAL STATISTICAL ANALYSIS:$8,320.00
REPORTING (preparation of two monitoring reports)
LABOR
Sr. Hydrogeologist, per hour 4 $150.00 $600.00
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:$7,692.00
DIRECT COSTS
Photocopies, estimate 1,000 $0.10 $100.00
Reprographics, estimate 2 $50.00 $100.00
Total Direct Costs:$200.00
SUBTOTAL REPORTING:$7,892.00
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 PROJECT MANAGEMENT:$3,744.00
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ATTACHMENT A
Date Submitted: November 9, 2012
ESTIMATED BUDGET
DECEMBER 2012 AND JUNE 2013 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 24 $88.00 $2,112.00
Total Labor:$2,112.00
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 $0.55 $27.50
Total Direct Costs:$27.50
SUBTOTAL ADDITIONAL SERVICES:$8,695.50
TOTAL TASK ORDER: $56,960.34
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