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Home My WebLink About14- December 2014 Assessment Groundwater Monitoring and Landfill Gas Monitoring TASK ORDER DECEMBER 2014 ASSESSMENT GROUNDWATER MONITORING AND LANDFILL GAS MONITORING BOZEMAN LANDFILL November 14, 2014 CLIENT: CONSULTANT: The City of Bozeman Tetra Tech, Inc. P.O. Box 1230 851 Bridger Drive, Ste 6 Bozeman, Montana 59711-1230 Bozeman, MT 59718 Attention: Mr. Rick Hixson Attention: Mr. Mark F. Pearson INTRODUCTION This task order includes the following work activities: • Conduct the December 2014 assessment groundwater monitoring event ✓ Continuation of landfill gas (LFG) monitoring • Project management, statistical analysis, and reporting SCOPE OF SERVICES This task order includes the following tasks: Task 1 December 2014 Groundwater Monitoring One assessment groundwater monitoring event will be conducted in December 2014 as part of the routine groundwater monitoring at the Bozeman Landfill. Tetra Tech will perform groundwater monitoring in accordance with Tetra Tech's Groundwater Monitoring Sampling Analysis Plan (September 17, 2010). Groundwater monitoring will be conducted in existing groundwater monitoring wells or stations. A monitoring, sampling, and analysis matrix is presented in Table 1. Field parameter monitoring and collection of water samples will be conducted in 31 monitoring wells as shown in Table 1. Water levels will be measured in all monitoring wells at the site prior to purging the wells for purging and sampling. Field parameters including temperature, pH, and specific conductivity will be measured at all stations where water samples will be collected. Field parameters will be measured during and at the conclusion of purging the wells. Task Order—December 2014 Assessment Groundwater Monitoring and Landfill Gas Monitoring Bozeman Landfill, Bozeman, Montana November 14, 2014 The purchase of a dedicated pump for well MW-5 is included because of a failure of the dedicated pump for this well in August 2014. 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. DEQ approved a decrease in the number of metals analyzed and the frequency of monitoring in some of the wells (DEQ correspondence to City of Bozeman dated January 14, 2013) and Table 1 reflects this. Two quality assurance/quality control (QA/QC) samples will be collected and prepared during the December 2014 assessment monitoring event. These will be 1) a duplicate sample collected and submitted for analysis of all constituents included in Table 1 and 2) a trip blank prepared by the analytical laboratory, shipped with the sample bottles, traveling with sample bottles in the field, and returned to the laboratory for analysis of VOCs. Task 2 Landfill Gas Monitoring Task 2 includes six months of LFG monitoring activities (from December 2014 through May 2015). LFG will be monitored at a number of locations for a variety of parameters, in part due to DEQ's required methane monitoring of the landfill and maintaining operation of the LFG extraction system. Hence, several different subtasks are proposed. Monthly Perimeter Methane Monitoring Methane monitoring will be conducted from landfill perimeter methane monitoring wells (designated BLG- wells) on a monthly schedule. Gas in these wells will be monitored for methane, carbon dioxide, oxygen, and nitrogen in percent by volume using a LFG meter. Monitoring results will be entered into a database and forwarded to DEQ - Solid Waste Bureau following each monitoring event. In addition, methane monitoring results will be briefly summarized in a monthly memorandum to City of Bozeman. Landfill Gas Extraction System Monitoring —Monthly Flare and Well Field Monitoring To evaluate optimal operation, the LFG extraction system will be monitored on a monthly basis. This will include measurement of methane, carbon dioxide, oxygen, nitrogen, and other gas parameters at the flare and at individual LFG wells (labeled GW- wells) in the Unlined Cell. In addition, liquid levels will be monitored on a monthly basis in the GW- wells and 4,000 gallon condensate storage tank. For each monthly monitoring event, a landfill gas meter (Landtec GEM 2000 Landfill Gas Analyzer) will be rented for use in the monitoring. Following each monthly monitoring event, Tetra Tech Solid Waste Remediation Specialists will review monitoring data and provide oversight/recommendations for optimizing system operation. Tetra Tech personnel will conduct adjustments to the GW-wells. Landfill Gas Extraction System Monitoring —Gas Sampling at Flare There will be one sampling event where one LFG sample will be collected at the flare station during December 2014 to maintain compliance with the Bozeman Landfill's Air Quality Permit. In the monitoring event, LFG at the flare (pre-thermal destruction) will be sampled using a six liter SUMMA canister from an access port located between the blower and flare. A dedicated half-hour flow controller will be connected to the canister and access port. Samples had formerly been collected using Tedlar® bags, however, in consideration of VOC constituents in soil gas and whether the landfill gas contains a particular constituent, landfill gas contained within a six liter SUMMA canister will result in a lower analytical detection limit. Page 2 of 4 Task Order—December 2014 Assessment Groundwater Monitoring and Landfill Gas Monitoring Bozeman Landfill, Bozeman, Montana November 14, 2014 Each sample will be submitted for laboratory analysis of parameters listed in Table 1 of Air Quality Permit # 2951-00 (not included in this task order). Upon receiving the landfill gas analytical results, Tetra Tech will forward a copy of the lab report to the City of Bozeman and DEQ -Air and Waste Management Bureau. Task 3 Project Management, Statistical Analysis, and Reporting Project management will include task order preparation, container orders to and communication with the analytical laboratories, personnel and monitoring equipment/meters scheduling, invoicing, data management, and communication with City of Bozeman and DEQ. Following the completion of the December 2014 groundwater monitoring described in Task 1 and receipt of laboratory results, data will be entered into the project database. DEQ will also be notified, in a letter, as to which monitoring stations have regulatory exceedances of VOCs, metals, and/or inorganic constituents. A statistical analysis of the groundwater will be conducted in accordance with DEQ requirements (ARM 17.50.1305 (7-11)). When the statistical analysis is complete, then preparation of a report summarizing the results of the December 2014 groundwater monitoring will be conducted. Monitoring results from two additional groundwater wells proposed in Tetra Tech's Task Order — Installation of Two Additional Groundwater Wells and Sampling. The report will also contain interpretations of the data. Conclusions and recommendations for further investigation and/or monitoring will be included. PERIOD OF PERFORMANCE Tetra Tech's anticipated schedule to initiate the above described activities will be dependent upon the time it takes for the City of Bozeman to approve of this task order. As mentioned above, one assessment groundwater monitoring event will be conducted in December 2014 and will include reporting of this event. Monthly monitoring of the LFG system will be conducted from December 2014 to May 2015. COSTS Estimated costs to complete the foregoing scope of services are summarized below: • December 2014 Groundwater Monitoring and Report $ 20,460 • Landfill Gas Extraction System and Flare Monitoring $ 11,655 • Reporting, Statistical Analysis and Project Management $ 17,285 TOTAL $49,400 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. Page 3 of 4 Task Order—December 2014 Assessment Groundwater Monitoring and Landfill Gas Monitoring Bozeman Landfill, Bozeman, Montana November 14, 2014 CLIENT: CONSULT T: A City of Bozeman Td\ By: By:etradc\\i(iliA Its: �i`r y Hit o ,e r Its: Senior Project Manager Date: 1 z - Z q' ) Lk Date: November 14, 2014 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 Page 4 of 4 TABLE 1 Schedule of Field Measurements and Laboratory Analysis—December 2014 Bozeman Landfill,Bozeman Montana December 2014 Field Laboratory VOCs I Inorganics Well or Monitoring Frequency pH,SC, pH&SC 'Partial List 'Full List' Cations Anions TDS& N as Sampling DO&ORP Ba,Fe,Mn Metals I Sulfate Total Site (dissolved)(dissolved) Chloride Hardness NO2+NO3 LF-2 Semiannual monitoring 1 1 1 1 1 1 LF-3 Semi-annual monitoring 1 1 1 1 1 1 1 MW-3 No mon.requirement, Last event in 2001 MW-4 Semi-annual monitoring _ _1 1 1 1 1 1 1 MW-5 Semi-annual monitoring �...._...— ..._._�._....._.__._........1 ......--._........_._..._._..._.._..._1.............._..._..._. _,...._...............1.................,...._1 ......__._..._.._...1_..._._...... MW-6 Semi-annual monitoring 1 1 1 1 1 1 1 1 MW-6B Four monitoring events completed MW-7A Semi-annual monitoring.......................................... 11 1......_.........._...._...........-....._—.................._..._...__._._._.._..._._........._._..._?.._....— ........._1,..,..........,._.... .... 1_..._._...... MW-7B DEQ requests next monitoring in 2015 MW-5A _....._....._......Semi-annual monitoring._.._._-._.._.._.._._._.. ?_............._............1........... 1 1 1 1 1 1 MW-88 DEQ requests next monitoring in 2015 MW-8C Four monitoring events completed MW-9A Semi-annual monitoring 1 1 1 1 1 1 1 MW-9B DEQ requests next monitoring in 2015 MW-10 Semi-annual monitoring 1 1 1 1 1 1 i MW-11 Semi-annual monitoring 1 1 1 1 1 1 1 MW-12 Semi-annual monitoring 1 1 1 1 1 1 1 MW-13 Semi-annual-monitorin_g 1 1 1 1 1 1 1 MW-14 Annual mon in Dec 2014 1 1 1 1 1 1 MW-15 Semi-annual monitoring, .......,.-. 1 ..._..._.._.__..._.T...-._........................_._..,........,1_._._..._......_..__..._..__.-_._.._.__..._._...—_.....,...1...,.__.,-......... 1 ._...__, MW-16 Four monitoring events completed MW 17 Last quarterly monitoring event 1 ..:......... —............_1..._.__..._.._....-..._._._....___...._ _._._..._...._.._.._1-_.-..--____..?._...,..,._.........._ ...-._-----..._......._.._........ MW-18 Last quarterly monitoring event_._..._ 1 1 ..............-........_1...._..........__..., _._.._....__._._.._T_.........._--..._. .__.._.........,..._..._........... MW-19 Last quarterly monitorin_g event _1 1 1 1 1 MW 20 Last quarterly monitoring event 1 1 1 1 1 1 MW-21 Lastouarterly monitoring event 1 1 1 1 1 MW_22 Last•quarterly monitoring event 1 1 1 1 1 MW 23 Last quarterly monitoring event 1 1 1 1 1 MW-24 Last quarterly monitoring event 1 1 1 1 1 MW-25 Last quarterly monitoring event 1 1 1 1 1 MW-26 Last quarterly monitoring event 1 1 1 1 1 PMW 27 Semi-annual monitoring 1 1 1 1 1 1 PMW-28 Semi-annual monitoring 1 1 1 1 1 1 1 Shop/Office Well Semi-annual monitoring 1 1 Mcllhattan Seep Semi-annual monitoring _..._._.............._...._._......_._..._1 ..,_._. .. 1 1 1 1 1 1 Valley View Vet We Semi-annual monitoring 1 1 1(1L Field Duplicate Semi-annual monitoring 1 1 1 1 1 1 1 Trip Blank._.._.-............_..Semi-annual monitoring.............._.--._.._....._-._.__................ 1 Notes: VOCs:Volatile organic compounds (1):Total recoverable analysis of metals Ba,Fe,Mn: Barium,Iron,Manganese 'Full List':Analysis of 15 metals(reported as dissolved concentrations)including: arsenic chromium iron selenium vanadium barium cobalt lead silver zinc cadmium copper nickel thallium manganese 'Total Number of Samples 1 41 311 01 211 281 28L_ 281 16 File:Table 1 Dec 2014 GW Mon Schedule Tetra Tech ATTACHMENT A ESTIMATED COST DECEMBER 2014 ASSESSMENT GROUNDWATER MONITORING AND LANDFILL GAS MONITORING BOZEMAN LANDFILL Date Submitted:November 14,2014 Task 1 December 2014 Groundwater Monitoring LABOR Senior Scientist,per hour $170.00 6 $1,020.00 Project Scientist,per hour $90.00 74 $6,660.00 Staff Scientist,per hour $80.00 30 $2,400.00 Subtotal $10,080.00 DIRECT COSTS RATE UNITS COST Vehicle mileage,per mile $0.80 50 $40.00 Water Level Meter,per week $60.00 1 $60.00 T-pH-SC-DO-ORP Meter,per week $300.00 1 $300.00 Replacement pump for MW-5(Proactive Hurricane®DTW up to 120 feet depth),each $539.00 1 $539.00 Sampling Disposables-Filter,each $19.00 16 $304.00 Sampling Disposables-Bailer,each $6.50 10 $65.00 Sampling Disposables-Low-flow tip,each $2.50 22 $55.00 Sampling Disposables-pump tubing,per foot $0.25 300 $75.00 Sampling Disposables -Miscellaneous,each $3.00 31 $93.00 Miscellaneous Equipment Shipping,estimate $100.00 1 $100.00 Lab Sample Shipping(overnight to lab),estimate $200.00 1 $200.00 Lab Analysis(pH&SC),each $14.00 4 $56.00 Lab Analysis(VOCs),each $95.00 31 $2,945.00 Lab Analysis(inorganics-partial list metals),each $45.00 0 $0.00 Lab Analysis(inorganics-full list metals),each $166.50 21 $3,496.50 Lab Analysis(inorganics-chloride,sulfate,TDS,Hardness) $34.00 28 $952.00 Lab Analysis(inorganics-nitrate+nitrite) $12.00 16 $192.00 Tetra Tech 10%markup on non-Tetra Tech Equipment,and Materials $907.25 Subtotal $10,379.75 TASK 1 DECEMBER 2014 GROUNDWATER MONITORING TOTAL $20.459.75 Tetra Tech Page 1 of 3 ATTACHMENT A ESTIMATED COST DECEMBER 2014 ASSESSMENT GROUNDWATER MONITORING AND LANDFILL GAS MONITORING BOZEMAN LANDFILL Date Submitted:November 14,2014 Task 2 Landfill Gas Monitoring Monthly Perimeter Methane Monitoring Well Monitoring Six Month Monitoring Duration(December 2014 through May 2015) LABOR RATE UNITS COST Senior Scientist,per hour $170.00 4 $680.00 Project Scientist, per hour $90.00 15 $1,350.00 DIRECT COSTS LandTec GEM2000 plus Landfill Gas Meter,rental per day Cost included in subtask below Equipment Shipping,estimate Subtotal $2,030.00 Landfill Gas Extraction System Monitoring-Monthly Flare and Well Field Monitoring Six Month Monitoring Duration(December 2014 through May 2015) LABOR Senior Scientist,per hour $170.00 4 $680.00 Methane Gas Remediation Manager,per hour $120.00 6 $720.00 Project Scientist,per hour $90.00 60 $5,400.00 DIRECT COSTS Vehicle mileage,per mile $0.80 25 $20.00 LandTec GEM2000 plus Landfill Gas Meter,rental per day $240.00 6 $1,440.00 Calibration Gas,each canister $160.00 1 $160.00 Equipment Shipping,estimate $100.00 6 $600.00 Tetra Tech 10%markup on non-Tetra Tech Equipment,and Materials $220.00 Subtotal $9,240.00 Landfill Gas Extraction System Monitoring—Gas Sampling at Flare One Event conducted in December 2014 LABOR Project Scientist,per hour $90.00 2 $180.00 DIRECT COSTS SUMMA Canister and Flow Controller,each $70.00 1 $70.00 TO-15 Analysis,each $180.00 1 $180.00 Equipment Shipping,estimate $100.00 1 $100.00 Tetra Tech 10%markup on non-Tetra Tech Equipment,and Materials $35.00 Subtotal $385.00 TASK 2 LANDFILL GAS MONITORING TOTAL $11,655.00 Tetra Tech Page 2 of 3 ATTACHMENT A ESTIMATED COST DECEMBER 2014 ASSESSMENT GROUNDWATER MONITORING AND LANDFILL GAS MONITORING BOZEMAN LANDFILL Date Submitted:November 14,2014 Task 3 Project Management,Statistical Analysis,and Reporting Statistical Analysis(preparation of one statistic report) LABOR Senior Statistician,per hour $185.00 5 $925.00 Senior Scientist,per hour $170.00 4 $680.00 Environmental Engineer,per hour $90.00 38 $3,420.00 Staff Scientist,per hour $80.00 1 $80.00 DIRECT COSTS Statistica Software,Annual Subscription Fee $80.00 1 $80.00 Subtotal $5,185.00 Reporting(preparation of one monitoring report) LABOR Senior Scientist,per hour $170.00 6 $1,020.00 Project Scientist,per hour $90.00 35 $3,150.00 CAD Operator,per hour $75.00 10 $750.00 Clerical,per hour $60.00 2 $120.00 DIRECT COSTS Photocopies,estimate $0.10 500 $50.00 Reprographics,estimate $50.00 1 $50.00 Subtotal $5,140.00 Project Management LABOR Senior Scientist,per hour $170.00 24 $4,080.00 Project Scientist,per hour $90.00 30 $2,700.00 Clerical, per hour $60.00 3 $180.00 Subtotal $6,960.00 TASK 3 PROJECT MANAGEMENT,STATISTICAL ANALYSIS AND REPORTING TOTAL $17,285.00 TOTAL TASK ORDER: ( $49,399.75 Tetra Tech Page 3 of 3