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HomeMy WebLinkAboutAgenda Report - August 2, 2017 C-11TM CITY OF LODI COUNCIL COMMUNICATION AGENDA ITEM c •- I I AGENDA TITLE: Adopt Resolution Authorizing City Manager to Execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, for Engineering Services Related to PCE/TCE Plume Management ($84,500), and Appropriating Funds ($84,500) MEETING DATE: August 2, 2017 PREPARED BY: Public Works Director RECOMMENDED ACTION: Adopt resolution authorizing City Manager to execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, for engineering services related to PCE/TCE plume management, in the amount of $84,500, and appropriating funds in the amount of $84,500. BACKGROUND INFORMATION: Five groundwater contaminant plumes have been identified within the City of Lodi. One of these plumes, considered the Central Plume Source Area (CPSA), began operating a Groundwater Extraction and Soil Vaper Extraction (SVE) System in April 2011. That system, along with a variety of cleanup facilities since 2003, has removed over 17,500 pounds of PCE. The City, along with Varinder Oberoi, Principal Hydrologist, formally with Langan Treadwell Rollo and Associates, has been working closely on cleanup activities with the Central Valley Regional Water Quality Control Board (CVRWQCB). Mr. Oberoi, now with West Yost Associates, Inc. (West Yost), has helped the City develop a work plan and protocol for attaining system closure for the CPSA. The remaining plumes (Northern, Southern, and South Central/Western Plumes) are currently part of the ongoing monitoring and sampling program administered by CVRWQCB. This Task Order will allow Mr. Oberoi and West Yost to provide an array of environmental consulting services on the City's groundwater contamination plumes that are currently in monitoring and cleanup phases and to address any issues that may arise that are not currently covered by active task orders. The scope of work will consist of a SVE system operation evaluation, technical oversight of the Lodi Central Plume Mid -Plume Groundwater Extraction and treatment system startup activities, evaluation of PCE in the Northern Plume, preparation of a revised Groundwater Monitoring and Sampling Plan for the Central, Southern, Western, and Northern Plumes, and on-call environmental consulting services for Citywide plume management. Staff recommends authorizing City Manager to execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, for engineering services related to PCE/TCE plume management, in the amount of $84,500, and appropriating funds in the amount of $84,500. FISCAL IMPACT: Revising the monitoring and sampling plan to reflect a semi-annual versus quarterly sampling schedule is expected to save approximately $25,500 per year. This work does not impact the General Fund. APPROVED: r, City Manager R:\GROUP\ADMIN\Council\2017\07192017\CC WY TO46.doc 7/24/17 Adopt Resolution Authorizing City Manager to Execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, for Engineering Services Related to PCE/TCE Plume Management ($84,500), and Appropriating Funds ($84,500) August 2, 2017 Page 2 FUNDING AVAILABLE: Requested Appropriation: Central Plume Cleanup Fund (59099000.77020) $41,500 Northern Plume Cleanup Fund (59399000.77020) $11,000 Southern Plume Cleanup Fund (59199000.77020) $ 3,500 Western Plume Cleanup Fund (59499000.77020) $ 3,500 PCE/TCE Rates (56599000.77020) $25,000 TOTAL $84,500 Andrew Keys Deputy City Manager/Internal Services Director C 32 Charles E. Swimley, Jr. Public Works Director Prepared by Andrew Richle, Utilities Superintendent — Public Works CES/AR/trb Attachment R:\GROUP\ADMIN\Council\2017\07182017\CC WY TO46.doc 7/24/17 Task Order 46 City of Lodi City of Lodi — Plume Management Activities West Yost Job Number 213-17-17-42 In accordance with the Task Order Agreement between City of Lodi (Client) and West Yost Associates, Inc. (Consultant), dated January 13, 1999, Consultant is authorized to complete the work scope defined in this Task Order according to the schedule and budget defined herein. WORK SCOPE Task 1. SVE System Operation Evaluation Based on the continued presence of relatively high soil vapor concentrations of VOCs at SVE wells in the alleyway, including tetrachloroethylene (PCE) concentrations exceeding the residential Environmental Screening Level (ESL), West Yost recommended that operation of the SVE system focus on reducing PCE concentrations in the alleyway using the same sampling protocol described in our Proposal for Sampling SVE Well Pairs, dated April 17, 2017. The proposed sampling schedule of May and August 2017 was approved by the Water Board in a letter to the City dated April 13, 2017. As part of this Task, West Yost shall perform the following activities: • A feasibility -level cost evaluation of alternatives for soil remediation in the LCP source area; • Prepare a Technical Memorandum summarizing our evaluation and recommendations for the selected alternative; • Meet with the City to discuss our recommendation for the selected alternative; and, • Prepare a letter report to the Water Board to summarize the May and August 2017 sampling results and recommend future work to obtain closure of the LCP SVE system. We have assumed that the City would provide one round of comments on the draft report and that the final letter report shall be submitted to the Water Board on the City's behalf and uploaded to GeoTracker. Task 1 Deliverables: One (1) electronic copy (in PDF format) of the Technical Memorandum and draft letter report. One electronic copy of the final letter report (in PDF format). Task 2. Technical Oversight of the LCP Mid -Plume Groundwater Extraction and Treatment System Startup Activities As part of mitigating the groundwater plume downgradient of the LCP source area, the City installed an extraction well EW -7 and a groundwater extraction and treatment (GWET) system on the Needham School property, located at 531 Church Street (intersection of Church Street and June 28, 2017 l n\a\c\K-O\2017\TO46 West Yost Task Order Tokay Street). However, during the startup activities, the extraction rate of EW -7 was observed to be significantly lower than the design extraction rate required to hydraulically contain and capture groundwater contamination in the LCP mid -plume area. Following a review of existing data from previous and current groundwater investigations, it was determined that a replacement extraction well EW -7R would be installed at a location approximately 20 feet north of monitoring well G -25A. West Yost shall provide technical oversight of EW -7R installation activities in accordance with our Proposal for Technical Oversight for Installation of Lodi Central Plume Mid -Plume Replacement Extraction Well EW -7R, dated April 17, 2017. These activities also include the performance of a step -drawdown test at EW -7R to obtain its maximum pumping rate. The proposed location of EW -7R was approved by the Water Board in a letter to the City dated April 20, 2017. Following completion of EW -7R installation activities, West Yost shall perform the following activities: • Perform GWET system startup activities which shall include continuous monitoring of groundwater levels using pressure transducers at nearby monitoring wells G -25A, G -25B, and G -25C for two days prior to and 10 days following commencement of pumping from EW -7R. Data collected shall be reduced, tabulated, and analyzed using AQTESOLV to estimate the aquifer properties near well EW -7R, including hydraulic conductivity and extent of the radial capture zone. These aquifer parameters and water level measurements shall be used to evaluate potential hydraulic communication between the different aquifer units (i.e., A, B, and C); • Collect and analyze a groundwater sample from EW -7R following completion of startup activities; and, • Prepare a letter report to the Water Board summarizing the installation of EW -7R and GWET system startup activities. The letter report shall include as -built construction drawings of the GWET system as well as the boring log and well construction details of well EW -7R. We assume the City shall provide this information to West Yost and have not included costs related to these in this proposal. We have assumed that the City would provide one round of comments on the draft report and that the final report shall be submitted to the Water Board on the City's behalf and uploaded to GeoTracker. Task 2 Deliverables: One electronic copy (in PDF format) of the draft report. One electronic copy of the final report (in PDF format). Task 3. Evaluation of PCE in Lodi Northern Plume Nested Monitoring Well NMW-1C Groundwater monitoring data collected from the Lodi Northern Plume (LNP) nested monitoring well NMW-1C, which is screened at a depth of 305 to 315 feet below ground surface (ft. bgs), indicates the presence of PCE and trichloroethylene (TCE) at concentrations of 15 micrograms per liter (µg/L) and 14 pg/L, respectively. PCE has not been detected above the maximum contaminant level (MCL) of 5 µg/L in the shallower nested wells NMW-1A and NMW-1 B, which are screened from 182 to 192 ft. bgs and 230 to 240 ft. bgs, respectively. Previous investigations in the LNP area have indicated that TCE is the primary VOC in the plume with minimal concentrations of PCE and other VOCs, including daughter products. TCE has been previously detected below 300 ft. bgs in the southern portion of the LNP area studied, whereas, PCE has not been detected over the MCL below 70 ft. bgs in the LNP area. Additionally, PCE has not been detected below 150 ft. bgs in the LCP up gradient of or near the NMW-1 nested wells. June 28, 2017 2 n\a\c\K-O\2017\To46 West Yost Task Order The Water Board suggested at the March 29, 2017 meeting that all available monitoring wells, supply wells, and boring logs should be evaluated to determine the cause of PCE detected above the MCL in NMW-1 C. As part of this evaluation, we will review data from previous investigations and perform a statistical trend analysis of the data to evaluate the possible pathway for PCE migration to NMW-1C. We will present the results of our evaluation in a technical memorandum (Memo) to the City. We have assumed that the City would provide one round of comments on the draft report and that the final report will be submitted to the Water Board on the City's behalf and uploaded to GeoTracker. Task 3 Deliverables: One electronic copy (in PDF format) of the draft report. One electronic copy of the final report (in PDF format). Task 4. Prepare Revised Groundwater Monitoring and Sampling Plan for the Lodi Central, Southern, Western, and Northern Plumes Based on the Water Board's suggestions to obtain closure for the various VOC plumes within the City, West Yost will revise the current monitoring and sampling plan (Plan) to reflect changes in VOC concentrations and migration pathways of the various VOC plumes in the City. The revised Plan shall be a first step to collect the necessary data to support a "Monitored Natural Attenuation (MNA)" remedial approach to the Lodi Southern Plume (LSP) and Lodi Western Plume (LWP) plumes. As part of this Task, West Yost shall perform the following: • Prepare an analysis of the monitoring and supply well data, including performing statistical analysis of the trends in VOC concentrations for the LCP, LSP, LWP, and LNP; • Prepare a revised Plan, which shall include revising the monitoring and sampling schedule from quarterly to semi-annual for the LCP wells; and • Meet with the Water Board to present the revised Plan and request Water Board approval. We have assumed that the City would provide one round of comments on the draft report and that the final report shall be submitted to the Water Board on the City's behalf and uploaded to GeoTracker. Task 4 Deliverables: One electronic copy (in PDF format) of the draft report. One electronic copy of the final report (in PDF format). Task 5. Provide On-call Environmental Consulting Services for City -Wide Plume Management As part of this Task, West Yost shall continue to provide environmental consulting services to the City for the several groundwater contamination plumes that are currently in monitoring and cleanup phases, and to address issues that continue to arise and are not currently covered by active Task Orders. We are being asked by the City staff to provide input to the City and to the various environmental contractors on their work, and this Task shall provide a mechanism for us to continue this support. June 28, 2017 3 n\a\c\K-O\2017\T046 West Yost Task Order BUDGET The costs for Consultant's services as defined herein shall not exceed $84,500.as per Table below: Fees for Services Task Estimated Fee; dollars Task 1. SVE System Operation Evaluation $23,000 Task 2. Technical Oversight of the LCP Mid -Plume Groundwater Extraction and Treatment System Startup Activities $15,000 Task 3. Evaluation of PCE in Lodi Northern Plume Nested Monitoring Well NMW-1C $7,500 Task 4. Prepare Revised Groundwater Monitoring and Sampling Plan for Lodi Central, Southern, Western, and Northern Plumes $14,000 Task 5. On-call Environmental Consulting Services for City -Wide Plume Management $25,000 TOTAL $84,500 COMPENSATION Compensation shall be in accordance with the provisions of the Task Order Agreement between Client and Consultant and the billing rate schedule as shown in Attachment A. The compensation limit for services performed under this task order shall not exceed $84,500. If additional funds are required to complete the services defined herein beyond this limit, Consultant shall notify Client in writing prior to reaching the authorized limit, and shall not proceed with work in excess of the limit without the prior written approval of Client. SCHEDULE Work shall commence immediately upon receipt of Notice to Proceed. We anticipate completing the proposed scope of work within approximately six months. WE Signature W. Franklin Helmick CITY OF LODI Signature Printed Name Printed Name Vice President Title 06/29/2017 Title Date Date Applopul la 10 term Deputy y Att y June 28, 2017 4 n\a\c\K-O\2017\TO46 West Yost Task Order WEST YOST ASSOCIATES Attachment A 2017 Billing Rate Schedule (Effective January 1, 2017 through December 31, 2017)* POSITIONS LABOR CHARGES (DOLLARS PER HR) ENGINEERING PrincipalNice President Engineering/Scientist/Geologist Manager I / II Principal Engineer/Scientist/Geologist I / II Senior Engineer/Scientist/Geologist I / II Associate Engineer/Scientist/Geologist I / II Engineer/Scientist/Geologist I / II Engineering Aide Administrative I / II / III / IV $258 $237 / $248 $216 / $229 $193 / $203 $172 / $184 $139 / $161 $78 $71 /$89 /$108 /$118 ENGINEERING TECHNOLOGY Engineering Tech Manager I / II Principal Tech Specialist I / II Senior Tech Specialist I / II Senior GIS Analyst GIS Analyst Technical Specialist I / II / III / IV CAD Manager CAD Designer I / II $244 / $254 $225 / $235 $207 / $216 $189 $178 $131 /$150/$169/$188 $150 $116/$130 CONSTRUCTION. MANAGEMENT Senior Construction Manager Construction Manager I / II 1 III / IV Resident Inspector (Prevailing Wage Groups 4 / 3 / 2 / 1) Apprentice Inspector CM Administrative I / II $246 $150 /$161 /$171 /$214 $130 /$145 /$161 /$167 $118 $64/$86 • Technology and Communication charges including general and CAD computer, software, telephone, routine in-house copies/prints, postage, miscellaneous supplies, and other incidental project expenses will be billed at 6% of West Yost labor. ▪ Outside Services such as vendor reproductions, prints, shipping, and major West Yost reproduction efforts, as well as Engineering Supplies, etc. will be billed at actual cost plus 15%. Mileage will be billed at the current Federal Rate and Travel will be billed at cost. • Subconsultants will be billed at actual cost plus 10%. • Expert witness, research, technical review, analysis, preparation and meetings billed at 150% of standard hourly rates. Expert witness testimony and depositions billed at 200% of standard hourly rates. 3 A Finance Charge of 1.5% per month (an Annual Rate of 18%) on the unpaid balance will be added to invoice amounts if not paid within 45 days from the date of the invoice. *This schedule is updated annually Rates -1 ASSOCIATES 2017 Billing Rate Schedule (continued) (Effective January 1, 2017 through December 31, 2017)* Equipment Charges EQUIPMENT BILLING RATES Gas Detector Hydrant Pressure Gage Hydrant Pressure Recorder, Standard Hydrant Pressure Recorder, Impulse (Transient) Trimble GPS — Geo 7x Vehicle Water Flow Probe Meter Water Quality Multimeter Well Sounder This schedule is updated annually $80/day $10/day $40/day $55/day $220/day $10/hour $20lday $185/day $30/day Rates -2 RESOLUTION NO. 2017-148 A RESOLUTION OF THE LODI CITY COUNCIL AUTHORIZING THE CITY MANAGER TO EXECUTE TASK ORDER NO. 46 WITH WEST YOST ASSOCIATES, INC., OF WALNUT CREEK, FOR ENGINEERING SERVICES RELATED TO PCE/TCE PLUME MANAGEMENT, AND FURTHER APPROPRIATING FUNDS WHEREAS, in accordance with the Task Order Agreement between City of Lodi and West Yost Associates, dated January 13, 1999, West Yost Associates is authorized to complete the scope of work defined in Task Order 46; and WHEREAS, Task Order No. 46 includes engineering and groundwater monitoring services related to PCE/TCE plume management; and WHEREAS, staff recommends authorizing the City Manager to execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, for engineering services related to PCE/TCE plume management, in the amount of $84,500; and WHEREAS, staff further recommends that the City Council appropriate funds as follows for Fiscal Year 2017/18: Central Plume Cleanup Fund (59099000.77020) $41,500 Northern Plume Cleanup Fund (59399000.77020) $11,000 Southern Plume Cleanup Fund (59199000.77020) $ 3,500 Western Plume Cleanup Fund (59499000.77020) $ 3,500 PCE/TCE Rates (56599000.77020) $25,000 NOW, THEREFORE, BE IT RESOLVED that the Lodi City Council does hereby authorize the City Manager to execute Task Order No. 46 with West Yost Associates, Inc., of Walnut Creek, California, for engineering services related to PCE/TCE plume management, in the amount of $84,500; and BE IT FURTHER RESOLVED that the Lodi City Council does hereby authorize an appropriation for Task Order No. 46 in the amount of $84,500, as set forth above. Dated: August 2, 2017 I hereby certify that Resolution No. 2017-148 was passed and adopted by the City Council of the City of Lodi in a regular meeting held August 2, 2017 by the following vote: AYES: COUNCIL MEMBERS — Chandler, Johnson, Nakanishi, and Mayor Kuehne NOES: COUNCIL MEMBERS — None ABSENT: COUNCIL MEMBERS — Mounce ABSTAIN: COUNCIL MEMBERS — None 1\(\1721(2.-,t10--4 cJE NIFER M� FERRAIOLO City Clerk 2017-148