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HomeMy Public PortalAboutAddendum No. 1 to Contract 184-2010 with AECOM Technical ServicADDENDUM THIS ADDEND M (Number 1 to Contract No. 184-2010) is made and entered into this day of , 2012, by and between Richmond, Indiana, a municipal corporation acting through x s Board of Public Works and Safety with its office at 50 North 5 h'Street, Richmond, Indiana, (hereinafter referred to as "City"), and AECOM Technical Services, Inc., 1800 West 17a' Street, Suite A, Bloomington, Indiana, 47404 (hereinafter referred to as "Contractor"). WHEREAS, City and Contractor entered into Contract No. 184-2010 on December 9, 2010; and WHEREAS, City wishes to continue to accept Contractor's proposal in connection with Contract No. 184-2010 which proposal supplements the environmental remediation services provisions of said Contract. NOW, THEREFORE, in consideration of the mutual promises and covenants herein contained, including the above stated recitals, City and Contractor hereby agree as follows: 1. The City and Contractor executed and entered into Contract No. 184-2010, on December 9, 20I0. .2. Contractor's proposal is dated June 5, 2012, and contains, in part, the negotiated additional fees for the above -described services in connection with said additional environmental remediation service provisions of Contract No. 184-2010. Said proposal is attached hereto as Exhibit A and incorporated by reference. Contractor agrees to abide by the same. 3. City shall pay Contractor the total supplement request not to exceed Fifty-seven Thousand Eight Hundred Forty-three Dollars and Zero Cents ($57,843.00) for the additional environmental remediation services provided by Contractor as set forth in Exhibit A in connection with Contract No. 184-2010. 4. Both parties agree that in accordance with Indiana Code 22-5-1.7-1 et seq., all service contracts entered into or renewed after June 30, 2011, must include the Indiana E- Verify Program Requirements, which requirements are set forth and incorporated into Contract Number 184-2010 as follows: SECTION XII. COMPLIANCE WITH INDIANA E-VERIFY PROGRAM REQUIREMENTS Pursuant to Indiana Code 22-5-1.7, Contractor is required to enroll. in and verify the work eligibility status of all newly hired employees of the contractor through the Indiana E-Verify program. Contractor is not required to verify the work eligibility status of all newly hired employees of the contractor through the Indiana E-Verify program if the Indiana E-Verify program no longer exists. Addendum No. l to Contract No. 18420,10 ? Page 1 of 2 Prior to the performance of this Agreement, Contractor shall provide to the City its signed Affidavit affirming that Contractor does not knowingly employ an unauthorized alien in accordance with IC 22-5- 1.7-11 (a) (2). In the event Contractor violates IC 22-5-1.7 the Contractor shall be required to remedy the violation not later than thirty (30) days after the City notifies the Contractor of the violation. If Contractor fails to remedy the violation within the thirty (30) day period provided above, the City shall consider the Contractor to be in breach of this Agreement and this Agreement will be terminated. If the City determines that terminating this Agreement would be detrimental to the public interest or public property, the City may allow this Agreement to remain in effect until the City procures a new contractor. If this Agreement is terminated under this section, then pursuant to IC 22-5-1.7-13 (c) the Contractor will remain liable to the City for actual damages. 5. Contractor agrees that no work shall commence until the City is in receipt of any required affidavit signed by Contractor in accordance with Indiana Code 22-5- 1.7-11(a)(2). IN WITNESS WHEREOF, this Addendum is executed and approved by the undersigned representatives of the City and Contractor this day of �G( , 2012 "CITY" THE.CITY OF RICHMOND, iNDIANA by and through its Board of Public Works and Safety Date: % "CONTRACTOR" AECOM Technical Services, Inc. 1800 West 1701 Street, Suite A Bloomington, IN 47404 Title. �IiY� �r►�iawa� E++�'i'Vyy1�i•4[�t7 �: Date: 7/Z0 Aort Page 2 of 2 i AECOM 317.735,3015 tel 8902 Vincennes Circle 317.293.4295 fax Indianapolis, IN 46268 June-5, 2012 Mr. Tony Foster 11 City of Richmond 'Executive Director Department of Metropolitan Development 50 North 5th Street Richmond, IN 47374 Subject: Proposal for Cleanup Efforts to Define the Plume and Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana IDEM Brownfields No. 4980004 Dear Mr. Foster: AECOM Technical Services, Inc. (AECOM) is pleased to submit this proposal to the City of Richmond (the City) to conduct cleanup efforts to define the plume and develop the groundwater Remediation Work Plan (RWP) for the Former Manufactured Gas Plant (MGP) site located at 16 West Main Street in Richmond, Indiana (Site). The Site is enrolled in the Indiana Brownfields Program and is assigned site number 4980004. The cleanup efforts and RWP are being completed at the request of the Indiana Department of r 3 Environmental Management (IDEM) Brownfield Section in order to secure United States Environmental protection Agency (US EPA) approval and maintain Brownfield loan eligibility for these activities. The Brownfield redevelopment program for this Site includes installation of a recreational pedestrian walk and bike trail for the citizens of Richmond. The City has an approved Remedial Action Work Plan (RAWP) to address source areas and chemicals of concern (COCs) in the tar well area, basement area, and SB-14 area. A targeted removal action for these known source areas is presented in the existing RAWP and is currently scheduled for June 2012. The purpose of the additional cleanup efforts proposed herein is to define the plume of COC impacted groundwater and to develop the remedial strategy to reduce and/or destroy the COC mass in the plume. The RWP will be appended to the existing Site RAWP. Summary of Previous Site Activities Site investigations were conducted at the Site between 1994 and 2011 to delineate soil and groundwater impacts associated with the former Richmond MGP Site through means of records searches, subsurface structure identification, local hydrogeological investigations, surface and subsurface sampling, installation of groundwater monitoring wells, and laboratory analysis of soil and groundwater samples. Information and findings from previous Site investigative efforts is provided in a number of documents as summarized in section 1.2.1 of the RAWP. EXHIMM PAGE - OEJj AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana The results of these investigations provided sufficient data to delineate source areas in soil. This information was utilized to prepare the approved RAWP in November 2011. Following the initiation of the RAWP, the IDEM Brownfield representative requested that the City's cleanup efforts include remediation of groundwater by reduction and/or destruction of COC mass in the plume. AECOM's proposed scope of work and associated schedule and cost information to conduct cleanup efforts to define the plume and develop the groundwater RWP are presented below. Scope of Work AECOM's scope of work for additional groundwater investigation and RAWP revision will consist of the following tasks: Task 100 — Existing Data Review • Review existing data • Prepare a figure and letter work plan defining the scope of work (anticipate installation of 5 monitoring wells Task 200 --Expand Monitoring Well Network • Monitoring well installation and development Task 300 — Sample Monitoring Well Network • Water level measurement } . Groundwater sample collection (low -flow methodologies) • Laboratory Analysis: COCs, In -Situ Chemical Oxidation (ISCO) Treatment Parameters • Slug testing Task 400 — Remedial Option Development • Revision of Conceptual Site Model (CSM) and development of remedial options based on comprehensive data set. Task 500 -- RWP Preparation Revision • Present Remedial Options to the City of Richmond and IDEM • Select Preferred Remedial Option • Develop RWP • Incorporate Into Site RAWP Task 600 — Brownfield Grant Coordination • IDEM and USEPA Coordination + Third Party Correspondence A more detailed description of each of these tasks is provided below. Task 100 -- Existing Data Review & Preparation of Brief Letter Work Plan & Figure �. Review Historical Data Initially, AECOM will review the previous Site data to establish the most up to date understanding of the COC plume conditions and the current Conceptual Site Model (CSM). This review will focus on historical site ground water conditions and include the existing RAWP and all available previous Site EXHIBIT PAGE _ 4F AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana investigations referenced in the RAWP. Of particular interest will be historical groundwater conditions including COC impacts and flow direction. This review will also focus on the previous pump test evaluation in order to determine Site specific groundwater flow conditions for COC transport considerations. Determine Additional Monitoring Well Locations Once the current plume conditions are established and understood within the context of previous Site groundwater investigations, AECOM will determine optimum locations to install additional groundwater monitoring wells. The purpose of this monitoring well installation program will be to select locations which will define the plume of COC impacted groundwater. It is anticipated that this will require the installation of at least 5 additional groundwater monitoring wells. At least one of these monitoring wells will be installed southeast of the Site in an upgradient location with respect to anticipated groundwater flow toward the Whitewater River. To date, background conditions have not been established for the Site. This is important to determine if there is an additional source of COCs identified at the Site which are not the result of fomner MGP operations and to define the upgradient extent of the plume. In addition to the upgradient monitoring well, it is anticipated that at least 4 groundwater monitoring wells will be installed at the Site. These monitoring wells will be installed to the west, northwest and north of the Site in lateral and downgradient locations in order to define the plume of COC impacted groundwater with respect to probable groundwater flow toward the Whitewater River. This number may be modified based upon the results of the historical data and current CSM review. Prepare a Brief Letter Work Plan and Figure Prior to mobilization to the Site to install the new monitoring wells, AECOM will prepare a brief letter work plan and figure to document the scope of and identify the proposed monitoring well locations on a Site Plan. This report will be submitted to the City for review and approval in consultation with the IDEM. This proposal assumes that the City will provide access to onsite and offsite sample locations (i.e., monitoring wells). k Task 200 — Expand Monitoring Well Network Install Monitoring Wells Once the locations of the new monitoring wells are approved by the City and IDEM, AECOM will return to the Site and install these additional wells to further define the plume. This monitoring well installation program will include advancement and continuous sampling of 5 borings to facilitate installation of 2-inch diameter monitoring wells, with a maximum anticipated depth of 20 feet below ground surface (ft-bgs). As borings are advanced to facilitate monitoring well installation, soil will be classified, characterized and logged on AECOM boring log forms in general conformance with ASTM Methods. Monitoring wells will be constructed in these borings in general conformance with ASTM Methods D 5784 and D 5092. Monitoring wells will be constructed of 2-inch (nominal) diameter schedule 40 PVC screen and casing. Screens will be ten (10) feet in length, with machine -cut slots of 0.010-irich width. Screens will be placed such that the screened interval "straddles" the water table and level of surface water in the Whitewater River. A filter pack comprised of clean quartz sand of uniform grain size will be placed in the annulus between the well screen and borehole wall, from the bottom of the boring to a depth not less than 2 feet above the top of the well screen. The remainder of the annulus will be filled with bentonite to within 2 feet of the ground surface. Each well will be EXHIBIT PAG :. '� OF ,ti AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana completed with a locking cap and either a protective cover extending approximately 30 inches above grade, or with a flush -mount cast iron cover. Protective covers will be set in concrete. Well Development The newly installed monitoring wells will be developed not less than 24 hours after completion of well construction. In addition to these wells, this task will include redevelopment of offsite monitoring wells MW-101 and MW 102 due to their importance with regard to plume delineation. Development will consist of over -pumping and surging. Development will be conducted at a flow rate sufficient to remove fine grained sediment from the well while minimizing drawdown of the water level within the well. The turbidity of the water removed during development will be monitored. Development will continue until turbidity has stabilized at the lowest value attainable or a maximum of ten times the volume of water within the well has been removed. Field records will include the volume of water removed, the nominal flow rate, the duration of the development effort and the turbidity of the water removed, in general conformance with ASTM Method D5521. Water removed during development will be securely contained on site for subsequent disposal at an appropriately permitted facility based on the waste characterization of this material. Following completion of all new monitoring wells, a survey will be conducted to determine the horizontal location of each well relative to the State Plane Coordinate System and the elevation of both the ground and the top of well casing. It is assumed that survey services will be provided by the City of Richmond. Location and elevation coordinates will be incorporated into boring logs. Task 300 — Sample Monitoring Well Network Water Level Measurement Fallowing installation and development, static ground water levels will be determined in the newly installed monitoring wells by direct measurement with reference to the top of casing at each location in general conformance with ASTM Method D 4750. Each monitoring well will be gauged utilizing an electronic oil -water interface probe to detect the presence of product, as free product has been identified historically in monitoring wells MW 001 and MW-005. The interface probe will also be utilized to determine the depth to groundwater in each monitoring well. Water levels in the previously installed well network will also be measured at this time. The elevation of the potentiometric surface will be determined by calculation using the water level data and the reference elevation for each well. The ground water flow direction will be inferred based on the elevation of the groundwater surface as so determined. Any free product identified during this phase of the project will be collected from the monitoring wells utilizing a peristaltic pump equipped with dedicated poly tubing and transferred to a 55 gallon steel drum and stored onsite to await disposal arrangements. Groundwater Sample Collection and Anal sis Following measurement of static water levels, water will be purged at flow rates ranging from approximately 100 to 500 millifiterslminute from the each well at the Site (13 monitoring wells) to prepare for sampling. During purging, the stabilization of water levels and select water quality parameters will be monitored. An in -line water quality meter will be used to determine when natural flow paths have been reestablished and formation water is being evaluated. Best efforts will be made to achieve the following: pH constant within 0.1 Standard Unit, temperature and specific conductance constant within 10%, and turbidity less than 10 NTU or constant within 10% if greater FHIBR . PAGE _ OF ` AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana than 10 NTU. Following stabilization, the in -line water quality meter will be disconnected and sampling will be initiated. Up to 13 groundwater samples will be collected from the monitoring well network and submitted to an environmental laboratory for BTEX, PAH, RCRA heavy metal and total cyanide in an effort to completely define the plume. Previous Site investigations have included weak acid dissociable (WAD) cyanide analyses, however, no levels of concern have been identified at the Site. Therefore, WAD cyanide analyses will not be conducted during this investigation. One duplicate sample and one trip blank will be used for QAIQC to assess the sampling and analytical program. Groundwater samples will be prepared and packaged at the point of sampling, shipped with ice in a cooler, and delivered under standard chain -of —custody procedures to an accredited IDEM-approved analytical laboratory for chemical testing. AECOM will utilize a typhoon - type down -hole pump utilizing low -flow sampling methodology for all groundwater sampling activities in accordance with IDEM preference. It is likely that one remedial option to destroy the COC plume at this Site is in -situ chemical oxidation (ISCO). In order to determine if Site conditions are amenable to ISCO remediation, a soil sample will be collected from one of the downgradient, offsite well locations by use of Shelby Tube or similar direct push method. This sample will be forwarded to a materials testing laboratory for porosity, permeability and total organic carbon (TOC) analysis. To further characterize the Site conditions for possible ISCO remediation, one sample will be collected from the monitoring well at this location and analyzed for total and dissolved iron (Fe) and magnesium (Mg). Slug Testing It is possible that a pump and treat groundwater system may be proposed as a remedial option to remove COC mass from the plume. As such, hydraulic conductivity of the subsurface material at the Site must be considered. Slug testing to determine Site specific hydraulic conductivity was performed previously and data from this event will be reviewed as part of Task 1. If supplemental data is deemed necessary, AECOM will perform a slug test on one of the newly installed wells using a single -well in situ hydraulic conductivity testing procedure. A solid cylinder (slug) of known volume will be used in the test to displace the water in the well casing. A rising head test will be performed on this well where the screen is partially submerged, and a falling head test followed by a rising head test will be performed if the screen is completely submerged. A pressure transducer ,'will be used to measure the changes in hydraulic head within the well casing throughout the slug test. An electronic data logger will be used to record the transducer measurements. The test data will be presented graphically and analyzed using the appropriate method, to be determined based on field conditions. The results will be used to calculate the hydraulic conductivity of the saturated zone around the well screen to support a pump and treat system design recommendation. Task 400 — Remedial Option Development Data collected during field activities will be incorporated into the comprehensive data set and used to revise the CSM and develop remedial options that reduce and / or destroy COC mass in the plume. Preliminary remedial options considered will include ISCO and / or groundwater pumping and treatment. Additional options may be considered based on data collected in the field. As part of this task, AECOM will present the selected remedial options to the City and the IDEM Brownfield representative for consideration. Upon consensus, AECOM will prepare the formal RWP to address groundwater. EXHIBIT PAGE COI= AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana Task 600 — RWP Preparation Revision The RWP will provide an evaluation of remedial options designed to reduce or destroy the mass of COCs such as pumping and treatment (removal) or ISCO (destruction) as suggested above. The RWP will be incorporated into the existing RAWP as an addendum and this updated RAWP will be submitted to IDEM for review and approval. Following IDEM approval, the RWP will be implemented in accordance with the scheduled included in the updated RAWP. Task 600 — Brownfield Grant Coordination Throughout the course of this project, AECOM will support the City of Richmond with third party correspondence, particularly with the IDEM and US EPA Brownfield representatives. This task may also include correspondence with other parties potentially involved with the remedial and Brownfield program such as public and private utilities, the Indiana Department of Transportation (INDOT) and other government entities. Correspondence may also include written and verbal communication with local media outlets such as the Richmond Palladium Item Newspaper. Project Schedule It is our understanding that this project must be completed by the end of August 2012 to maintain Brownfield funding eligibility. The following timeline is proposed to meet this completion date: 06/04/12 06/23/12 100 Existing Data Review & Preparation of Letter Work Plan & Figure 200 Expand Monitoring Well Network 06/25/12 07/03/12 ry 300 Sample Monitoring Well Network 07I05/12 07/20/12 400 Remedial Option Development 07/23/12 08/03/12 500 1 RWP Preparation Revision 08105/l2 08/31/12 600 1 Brownfield Grant Coordination 06/04/12 08/31/12 Duradon s� Y Project Budget and Project Assumptions ,The estimated budget to complete the proposed scope of work will be a lump fee of $57,843. Our budget will not exceed this cost estimate without prior authorization from the City. Project work will be conducted in accordance with the General Terms and Conditions of AECOM's existing contract with the City. A task by task breakdown of this budget estimate is presented in the following cost summary table: EXHIBIT ..L PAGE OF AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana Ogg Existing Data Review & Preparation of Letter Work Plan &figure $3,784 100 200 Install Additional Monitoring Wells $17,145 300 Sample Monitoring Well Network $15,477 400 Remedial Option Development $9,332 500 RWP Preparation Revision $8,566 600 Brownfield Grant Coordination $3,540 Subtotal $57,843 AECOM assumes the following based on the above cost estimate: • The City will provide site access to the Site and offsite locations for field activities. • These costs assume that 5 additional monitoring wells will be installed at the site. If required, additional monitoring wells will be installed for a cost of $3,260 each. • The cost for sampling of the existing monitoring well network, including slug testing is estimated at up to four (4) consecutive 8-hr field days with a two -person AECOM field crew. • The cost for sampling of the monitoring well network includes analysis of up to 13 groundwater samples for BTEX, PAHs, RCRA heavy metals and total cyanide. Additional samples will be analyzed for a cost of $265 each. If requested, WAD cyanide analysis can be provided for a cost of $39 per sample analysis. • The cost for sampling also includes collection and analysis of one soil sample for porosity, permeability and TOC analysis. Additional analysis can be provided for a cost of $50 per sample. • AECOM will not encounter delays beyond our reasonable control at the Site to include, but not be limited to, weather conditions, labor strikes, access restrictions, construction, or rail yard maintenance that would prevent access to the Site once AECOM personnel have mobilized to the Site. • A draft revised RWP will be submitted to the City for review, comment and addition of signatures. The final revised RAWP will be forwarded to the City for shipment to IDEM. Report production and shipping costs are not included in this proposal. AECOM will publish and ship finalized reports to IDEM at the City's request; however, these costs have not been included in the project cost estimate and will be charged to the project. P r, �4uthorization Please sign the attached acknowledgement as your written acceptance of AECOM's Proposal to 1 conduct cleanup efforts to define the plume and develop the groundwater RWP at the former MGP in Richmond, Indiana for $57,843. EXHIBIT PAGE ` 14 AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana We appreciate the opportunity to submit this proposal and look forward to continue working with you at the Site. Please feel free to contact the undersigned if you have questions regarding this proposal. Sincerely yours, AECOM Technical Services, Inc. Brooks R. Bertl, P.E., L.P.G. Senior Project Manager 317-735-3015 0-1 Jeffrey P. Nelson Department Manager 812-334-8311 �EXH�BITr _ _PAGE OF AECOM Cleanup Efforts to Define the Plume Develop a Groundwater Remediation Work Plan Former MGP Site Richmond, Indiana Work Authorization AECOM Proposal Dated .tune 5, 2012 I hereby authorize AECOM to proceed with the scope of work to conduct cleanup efforts to define the plume and develop the groundwater RWP for the former MGP site located at 16 West Main Street in Richmond, Indiana, described in AECOM's proposal dated June 5, 2012, with a budget authorization of $57,843 under the current contractual agreement between AECOM and the City of Richmond. Signature Date Print Name Title/Organization I agree to accept invoices from AECOM via e-mail and not postal mail: Yes } Signature: E-mail address: " Recipient Mr/Ms: 1 Return to: Brooks Bert] AECOM ,Z902 Vincennes Circle, Suite D Indianapolis, IN 46268 e - Fax: (317) 735-3015 E-Mail: brooks.bertIO-aecom.com — F. R 3tj } EXHIBIT PAGE OF"