Building Demolition and Impacted Soil Excavation Work Plan ... › documents › deq ›...

Submitted to Submitted by EnvironmentA=COM Mr. David Harn AECOM MDEQ-RRD 3950 Sparks Dr SE Kalamazoo District Grand Rapids, Ml, 49546 7953 Adobe Road July 2016 Kalamazoo, Ml, 49009

AECOM Building Demolition and Impacted Soil Excavation Work Plan Pullman Industries, Bloomingdale, Michigan

Table of Contents 1 Introduction .........................................................................................................................................................................1-1

1. 1 Site Information ............................................................................................................................................................1-1 1.2 Site Location and Description .......................................................................................................................................1-1 1.3 Site Background Information ........................................................................................................................................1-1 1.4 Project Understanding and Objectives .........................................................................................................................1-2

2 Scope-of-Work ....................................................................................................................................................................2-1

2.1 Task 1: Pre-Construction Activities ...............................................................................................................................2-1

2.1.1 Project Kickoff Meeting ........................................................................................................................................2-1 2.1.2 Engineering Estimate ..........................................................................................................................................2-1 2.1.3 Site-Specific Health and Safety Plan ...................................................................................................................2-1 2.1.4 Paint and Asbestos Survey .................................................................................................................................2-1 2.1.5 Inland Lakes and Streams/Wetland Permitting ....................................................................................................2-1 2.1.6 Prepare Bid Specifications ..................................................................................................................................2-2 2.1.7 Bid Administration, Evaluation and Trade Contractor Selection .......................................................................... 2-2

2.2 Task 2: Project Administration .....................................................................................................................................2-3

2.2.1 Coordination ........................................................................................................................................................2-3 2.2.2 Review TC Submittals .........................................................................................................................................2-3

2.3 Task 3: Demolition, Excavation, Backfilling, and Restoration Oversight Services .......................................................2-3

2.3.1 Coordination ........................................................................................................................................................2-3 2.3.2 Pre-Field Activities Meeting .................................................................................................................................2-3 2.3.3 Field Oversight Services ......................................................................................................................................2-3 2.3.4 Verification (Soil) Sampling .................................................................................................................................2-4 2.3.5 Waste Characterization, Transportation, and Disposal .......................................................................................2-4

2.4 Task 4: Reporting .........................................................................................................................................................2-5

2.4.1 Post Demolition, Excavation and Backfill/Restoration Report ..............................................................................2-5

3 Project Personnel ...............................................................................................................................................................3-1 4 Project Schedule/ Budget. .................................................................................................................................................4-1

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AECOM Building Demolition and Impacted Soil Excavation Work Plan Pullman Industries, Bloomingdale, Michigan

List of Acronyms

ACM Asbestos Containing Materials AECOM AECOM Technical Services, Inc ASTs above ground storage tanks bgs below ground surface BTEX Benzene, Toluene, Ethylbenzene and Xylenes DOD Department of Defense DOE Department of Energy DOI Department of the Interior DRO Diesel Range Organics DTMB Michigan Department of Technology, Management and Budget DWP drinking water protection EM electromagnetic EPA Environmental Protection Agency ft2 square feet GPR ground penetrating radar GSI groundwater I surface water interface HASP Health and Safety Plan ISID Indefinite-Scope, Indefinite-Delivery MDEQ Michigan Department of Environmental Quality ODCs other direct costs OSHA Occupational Safety and Health Administration PNAs Polynuclear Aromatic Hydrocarbons PID photoionization detector PPE personal protective equipment PSC Professional Services Contractor QNQC Quality Assurance/Quality Control RBSL Risk Based Screening Levels RI Remedial Investigation RRD Remediation and Redevelopment Division SI Site Investigation sow Scope of Work SPM State Project Manager TCs Trade Contractors TM Technical Memorandum TPH Total Petroleum Hydrocarbons TPH-DRO Total Petroleum Hydrocarbons Diesel Range Organics UST underground storage tanks VAS vertical aquifer sampling voe volatile organic compounds WP Work Plan

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AECOM Building Demolition and Impacted Soil Excavation Work Plan 1-1 Pullman Industries, Bloomingdale, Michigan

1 Introduction

The Michigan Department of Environmental Quality (MDEQ), Remediation and Redevelopment Division (MDEQ-RRD) has requested that AECOM Technical Services, Inc. (AECOM) prepare a Work Plan (WP) to provide engineering consultation services for the Pullman Industries Facility (Facility I.D. #: 80000211 ), located in Bloomingdale, Michigan under the AECOM Indefinite-Scope, Indefinite-Delivery (ISID) contract (Contract Number 00463). AECOM has provided Mr. David Harn, State Project Manager (SPM), project management and technical support services for the facility under the ISID contract since Fall of 2015. Numerous assessments have been conducted to evaluate and monitor the extent of impacts both on-site and off-site, including LIF-UVOST™ screening, direct-push soil borings, and groundwater monitoring and sampling, including vertical aquifer sampling.

1.1 Site Information

Site Name: Pullman Industries

Facility I.D. No: 80000211

Site Location: 40677 East Kalamazoo Street (CR-388) Township of Bloomingdale Van Buren County, Michigan

State Project Manager: David Harn

MDEQ District Office: Kalamazoo

1.2 Site Location and Description

The Pullman Industries site, located just outside of Bloomingdale, Michigan (the "Site"), is an irregularly shaped 6-acre parcel of land currently in the possession of the Michigan Land Bank Fast Track Authority. A 36,000 square foot (ft2) manufacturing facility once occupied a portion of the Site, but remains vacant and in a deteriorating condition. Two above ground storage tanks (ASTs) associated with former refining operations are present in the grass covered area east of the building and asphalt covered parking lot.

1.3 Site Background Information

In the early 1940s, the Fort Dale Oil and Refining Company owned and operated an oil and gas refinery on the property before dismantling operations sometime before 1950. A Site aerial photograph from 1938 shows barren land and an aerial image from 1950 shows remnant oil terminal operations. The on-Site building was constructed sometime thereafter and used for the manufacturing of rough closet doors, offices, and for storage purposes. The property was sold to Pullman Industries in the 1970s for fabrication of metal parts for the auto industry. Historical photographs indicate a small retail gas facility operated onSite sometime between the dismantling of the refinery and operations by Pullman.

In 1996, five (5) gasoline underground storage tanks (USTs), ranging in capacity from 500, 1,000, and roughly 4,000 gallons, were discovered and removed from Site. During UST removal, a release was confirmed and reported to the MDEQ. With no liable party, the MDEQ began state funded response actions in 1999.

Several investigations have been conducted at the Site, and are summarized as follows:

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• In 1992, soil samples collected from suspected sludge pits on either side of the then excavated UST area indicated Total Petroleum Hydrocarbons (TPH} at concentrations up to 6,600 mg/kg in the soil borings collected just northeast of the property building. Samples indicated impacts between 3 feet and 5.5 feet below ground surface (bgs) with a clean confining layer present between 6 and 8 ft bgs.

• In 2002, a Site Investigation (SI) was performed which included a geophysical survey involving electromagnetic (EM) and ground penetrating radar (GPR) that determined that no USTs remained at the Site. The SI determined that the concentrations of benzene, toluene, ethylbenzene, and xylenes (BTEX), as well as polynuclear aromatic hydrocarbons (PNAs), exceeded both the drinking water protection (DWP) and groundwater I surface water interface (GSI) Risk Based Screening Levels (RBSLs}. High concentrations of Diesel Range Organics (ORO) were found to be more widespread than other petroleum indicator parameters.

• Supplemental investigations also indicated impacts to the storm water basins, wetland sediments, and the outfall into the Haven and Max Lake drain south of the Site.

• In 2015/2016, a Remedial Investigation (RI) was conducted by AECOM using a combination of LIF-UVOST™ screening and direct-push borings to identify the horizontal and vertical extents of subsurface impacts at the Site. Monitoring well sampling and vertical aquifer sampling (VAS) were also conducted to identify extents of groundwater impacts at the Site. The Michigan Geological Services Unit (GSU) also performed a direct-push soil and groundwater investigation at the Site in 2016 to expand on the data collected by AECOM. The Rl results determined that an approximate area of impacted soils and groundwater extending to an average depth of 7 feet bgs covers approximately 108,000 square feet (2.48 acres).

1.4 Project Understanding and Objectives

AECOM will serve as the Professional Services Contractor (PSC) under its ISID contract to assist the MDEQ-RRD in procuring qualified Trade Contractors (TCs) and provide professional construction/engineering management and environmental oversight during the execution of the proposed demolition, excavation, backfilling, and restoration activities at the Site.

Our commitment is to deliver professional engineering and environmental services that meet or exceed MDEQ-RRD expectations; implement a consistent quality assurance program; complete the requested technical support services in a costeffective and efficient manner; and coordinate with and respond to inquiries from the MDEQ-RRD.

Based on our understanding of the current Site conditions, project goals, as well as our experience in implementing similar assignments, our key objectives are as follows:

• Provide an experienced technical and management team focused on the project objectives and MDEQ-RRD's expectations and needs;

• Utilize consistent Quality Assurance/Quality Control (QA/QC) procedures throughout the duration of the contract;

• Add value by providing thoughtful solutions that are practical, technically sound, and cost-effective; and,

• Collaborate with the MDEQ-RRD to take advantage of the knowledge base and synergy to deliver a client-satisfactory project within the specified time frames.

The Scope of Work (SOW) presented below is divided into distinct project tasks. The following narrative describes each task and critical elements included under that task. Sub-tasks required to complete a specific project task will often be interdependent and may not be identified until earlier work is complete. AECOM will continuously focus on the stated project objectives and will routinely re-evaluate specific project tasks so that work is directed at achieving project objectives in a timely manner and for the best value.

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2-1 AECOM Building Demolition and Impacted Soil Excavation Work Plan Pullman Industries, Bloomingdale, Michigan

2 Scope-of-Work

The following SOW has been developed to assist the MDEQ-RRD in achieving the goal of demolishing the on-Site building, excavating and disposing of impacted soils, and restoring the Site. In preparing the SOW, specific tasks were developed as detailed in the following sections.

2.1 Task 1: Pre-Construction Activities

2.1.1 Project Kickoff Meeting

Following contract award, AECOM will schedule, coordinate and conduct a kickoff meeting with the MDEQ-RRD to finalize the scope of the proposed demolition, excavation, backfilling, and restoration activities, project budget, implementation schedule, lines of communication and authority, contracting strategy, reporting requirements (including progress reporting), and invoicing.

2.1.2 Engineering Estimate

To assist the MDEQ-RRD with an estimate of funding allocation for the project. AECOM will prepare a preliminary engineering estimate for the proposed work scope. The estimate will include a level of detail consistent engineering estimates of similarly scoped projects and will use AECOM's professional experience and past costing data. AECOM will provide the engineering estimate in a Technical Memorandum (TM) format.

2.1.3 SitewSpecific Health and Safety Plan

AECOM will update the Site-specific Health and Safety Plan (HASP) for use by AECOM field personnel, TCs, and Site visitors including MDEQ-RRD personnel. AECOM will ensure that the HASP is in accordance with the Occupational Safety and Health Administration (OSHA) standards for hazardous waste operations and emergency response at uncontrolled hazardous waste sites (29 CFR 1910.120}, as well as Michigan OSHA requirements (PA 154 of 1974}. Based on substantial available data, it is anticipated that Site activities will be performed with personal protective equipment (PPE) consistent with Level "D" protection. The level of protection required may be revised based on observations and field monitoring as the field work proceeds.

2.1.4 Paint and Asbestos Survey

AECOM will retain the services of a qualified industrial hygiene services subcontractor to conduct a survey to assess the presence and concentrations of lead and cadmium in paint and asbestos within the Site building. It should be noted that there is a new MDEQ directive that building concrete be tested for asbestos, and as a result this has been included in the survey. In addition, a recent national directive recommends testing of both lead and cadmium within paint and as a result, both metals have been included in the paint survey. AECOM will use the results to determine the need for the TC to provide abatement prior to building demolition. Depending on the requirement for abatement, AECOM will include the abatement task in the bid specifications.

2.1.5 Inland Lakes and Streams/Wetland Permitting

A small man-made ditch requires excavation as part of site remediation. Activities such as excavation in this ditch are regulated under Part 301 - Inland Lakes and Streams - of Public Act 451 of 1994, as amended, and a Part 301 permit is required. The MDEQ may (at their option) apply for the minor project permit for cleanup of hazardous and toxic waste for this project, considering that the excavated material is not hazardous waste as defined by Part 111 and will be disposed of at a licensed landfill. An individual permit will be required if MDEQ determines that the minor project category is not applicable to this project.

AECOM will prepare the "Joint Permit Application" for excavation and restoration of the ditch. This application requires, among other things, specifying the purpose and need for the project, an analysis of the project alternatives, identification of adjacent riparian owners, and controls that will be in place during and following the excavation. AECOM will include

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appropriate drawings, photographs and a description of restoration of the ditch with the application. Typically the MDEQ has questions on the submitted application, and AECOM will follow-up to answer these questions. The minor permit process (if implemented by MDEQ) requires 3-4 months for processing. The individual permit requires 6-7 months for processing. The Joint Permit Application requires the same information for the minor project permit and the individual project permit.

2.1.6 Prepare Bid Specifications

AECOM will develop the draft design and detailed bid specifications using approved State of Michigan public bidding procedures to advertise and solicit competitive bids with the intent to award a trade contract to the best value/qualified, responsive TC possessing the required level of experience and qualifications.

The bid specifications will be written to concisely describe the actions to be taken in the field through project completion and will include, as necessary, engineered drawings and design, excavation soil volume estimates, determination of dewatering design parameters including potential treatment and discharge, the potential need for waste stabilization prior to transport, a verification sampling plan, and any other pertinent detail as it relates to the chosen approach. The bid package will include demolition, excavation, backfill, and restoration activities at a minimum.

AECOM will communicate with MDEQ-RRD's Contract Procurement Unit to determine the proper format for the specification. For purposes of this WP and budget, AECOM assumes that the bid specifications will be prepared in accordance with the MICHSPEC Bidding and Contract Document Specification standard (for projects exceeding $1 M). The bid specification will include details concerning the requirements and expectations for completing the demolition, excavation, backfill, and restoration activities at the Site. Draft copies of the specification package will be submitted to the MDEQ-RRD, Michigan Department of Technology, Management and Budget (DTMB) and MDEQ Procurement Unit for review and collective comment. After the comments are received, AECOM will make appropriate revisions and submit final copies of the bid package to the MDEQ Procurement Unit for advertisement. AECOM assumes that one (1) revision to the specification package will be prepared following the collective review from MDEQ-RRD, DTMB and MDEQ Procurement Unit.

2.1.7 Bid Administration, Evaluation and Trade Contractor Selection

Following completion and submittal of the final specification package, AECOM will provide assistance to procure a TC who will perform the work. AECOM will assist the MDEQ-RRD in using approved State of Michigan public bidding procedures to advertise and solicit competitive bids with the intent to award a trade contract to the lowest-cost, responsive vendor possessing the required level of experience and qualifications. Under terms of the contract, the selected TC will be required to pay prevailing wage rates in compliance with the Davis Bacon Act and use United States materials. It is expected that the TC will use materials from local sources.

AECOM will support the MDEQ-RRD in the bidding process including:

• Advertising for bids;

• Distributing bid documents {up to 25 copies) to bidders;

• Coordinating and hosting one (1) mandatory Site walkover and pre-bid meeting for prospective bidders with the MDEQ-RRD and/or DTMB (this includes maintaining the contractor sign-up sheet and attendance records, reviewing bid specifications for prospective bidders, and preparing pre-bid meeting minutes);

• Providing responses to one ( 1) round of bidder questions;

• Preparing and submitting up to one (1) addendum to the bid documents;

• Reviewing and evaluating the bids, backup documentation and references. Bids will be reviewed and evaluated for cost, performance, and technical merit;

• Providing recommendations of the selection of the three (3) lowest/responsive bidders to the State; and

• Coordinating and attending a TC pre-award meeting with the prospective TC (low bidder), MDEQ-RRD and/or DTMB to further evaluate competence of the TC (if necessary). The Pre-Award meeting allows MDEQ-RRD / DTMB the opportunity to select another TC, if needed;

The demolition, excavation, backfilling, and restoration project will be advertised for three weeks in accordance with the DTMB. The prospective TCs will be required to prepare and submit their bids to the DTMB three weeks after the Site walkover for public bid opening, as part of the State's normal bidding process.

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2.2 Task 2: Project Administration

Under this task, AECOM will provide full-time contract administration and engineering oversight services as the Engineer for the State.

2.2.1 Coordination

Following TC contract award and during the course of the contract, AECOM will preside at key project related meetings and prepare and distribute draft meeting minutes to the MDEQ-RRD for review/approval within 3 days of the date of the meeting. Upon review, any acceptable comments will be incorporated in the draft meeting minutes and final copies of the meeting minutes will be issued for distribution to the project team within five business days of receipt of the review comments.

2.2.2 Review TC Submittals

Prior to initiating the demolition, excavation, backfilling, and restoration activities, AECOM will review TC pre-work submittals including, but not limited to, WP, HASP, permit applications, waste profile summaries, project schedules, and the use of any proposed disposal/recycling facilities. These submittals will be reviewed to verify that the proposed activities are consistent with the design specification requirements.

2.3 Task 3: Demolition, Excavation, Backfilling, and Restoration Oversight Services

Under this task, AECOM will provide full-time field oversight services as the Engineer for the State to confirm the Site activities are implemented in accordance with the bid documents and bid specification requirements. AECOM will notify MDEQ-RRD prior to initiating any field activities.

2.3.1 Coordination

Throughout the duration of this contract, AECOM's Project Manager and key staff will coordinate the Site demolition, excavation, backfilling, and restoration activities with the selected TC, MDEQ-RRD and/or DTMB, and all other project related resources on a regular basis to avoid potential misinterpretations of the contract documents.

2.3.2 Pre-Field Activities Meeting

AECOM will schedule, coordinate and conduct a pre-field activity meeting at the Site with the selected TC, MDEQ-RRD and/or DTMB to discuss details of the demolition, excavation, backfilling, and restoration activities, contract procedures (i.e., change orders, payment requests, etc.), project management, and lines of communication with the selected TC.

2.3.3 Field Oversight Services

AECOM will oversee the TC during all aspects of the demolition, excavation and backfill/restoration activities and document TC's conformance and adherence to the project specifications. AECOM will also direct the TC during the removal of impacted soil from the Site.

Implementation of this phase will include, but not be limited to, the following elements:

• Review and comment on all material and equipment submittals;

• Notification to appropriate property owners of project activities prior to work being performed;

• Provide continuous oversight during building demolition activities, excavation of impacted soils, and backfill/restoration activities to monitor adherence to the specifications;

• Provide visual screening of soils and photoionization detector (PID) screening (e.g. values> 100 ppm or as directed by the MDEQ-RRD);

• Generation and/or maintenance of project documents;

• Monitor TC's control of costs and adherence to schedule;

• Act as agent for the MDEQ-RRD in reviewing and signing waste disposal manifests, as appropriate;

• Monitor compliance with permit requirements, as necessary;

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• Provide record keeping of contract progress and contract quantities;

• Coordinate, attend, and conduct, as deemed necessary, project status/progress meetings with the MDEQ-RRD and/or DTMB and prepare meeting minutes. Meetings will be attended by AECOM field personnel, project manager, and/or project engineer. Meeting minutes will be distributed for review and comment to all parties attending the meeting. Up to one (1) revision of meeting minutes will be prepared per meeting;

• Provide weekly written project status/progress reports. The project status/progress reports will be distributed to the MDEQ-RRD and/or DTMB for review and comment. One revision will be completed for each report;

• Conduct processing of pay requests;

• Conduct processing of change bulletins (a maximum of two (2) bulletins are included);

• Complete pre-final and final inspections;

• Review and process demolition, excavation, and backfill/restoration documentation (e.g., sampling results, monitoring results, and maintenance reports) for archiving in MDEQ-RRD files;

• Perform project management functions, as appropriate, to facilitate meeting the State's objectives and to oversee the effective expenditure of State funding; and

• Observe, if required, perimeter air monitoring performed by others.

AECOM estimates this phase of the project will require approximately fifteen (15) weeks of field oversight time. The time required to review pre- and post- field activities submittals has also been included within this task, as an addition to the estimated field time.

2.3.4 Verification (Soil) Sampling

Upon the removal of contaminated soil, AECOM will collect the required number of sidewall and floor soil samples for analysis in general accordance with MDEQ Sampling Strategies and Statistics Training Materials for Part 201 Cleanup Criteria (2002). Based on a preliminary layout of the excavation prepared by AECOM, it is anticipated that approximately thirty-five (35) sidewall and floor soil verification samples, inclusive of QA/QC samples, will be collected for laboratory analysis using a statistical approach. The samples will be submitted to the MDEQ-RRD State Analytical Laboratory, in Lansing, Michigan for analysis. Soil samples will be submitted for the laboratory analysis of volatile organic compounds (VOCs), polynuclear aromatic compounds (PNAs), and Total Petroleum Hydrocarbons Diesel Range Organics (TPH-DRO). Soil samples collected for VOC analysis will be preserved with methanol in the field (per EPA Method 5035), placed in chilled coolers, and shipped to the MDEQ State Laboratory in Lansing, Michigan for analysis in accordance with EPA Method 82608. Soil samples collected for analysis of PNAs (per EPA Method 8270C) and TPH-DRO (per EPA Method 8015C) will be placed in appropriate containers, put in chilled coolers, and shipped to the MDEQ State Laboratory in Lansing, Michigan for analysis.

If substantial water exists within the excavation, water samples will also be collected for analysis. AECOM assumes up to twelve (12) water samples, inclusive of QA/QC samples, will be collected for laboratory analysis and submitted for laboratory analysis of voes, PNAs, and TPH-DRO using a statistical approach)

Laboratory costs are not included in the AECOM total project budget to complete the tasks outlined in this WP.

2.3.5 Waste Characterization, Transportation, and Disposal

AECOM will oversee the TC in the transportation and disposal of all waste generated during Site activities. The TC shall be responsible for handling four potential general waste streams. These include: 1) rinse water from equipment decontamination, 2) contaminated soils encountered during the excavation activities, 3) groundwater from the excavation, if encountered, and 4) debris and metal from the demolition of the on-Site building. All water will be handled separately and disposed of at an approved liquid waste disposal facility or treated by on-Site treatment facility. All wastes generated at the Site are assumed to be non-hazardous.

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2.4 Task 4: Reporting

2.4.1 Post Demolition, Excavation and Backfill/Restoration Report

Following completion of the building demolition, excavation of impacted soils, and backfill/restoration activities, AECOM will prepare a field activities summary report for submittal to the MDEQ-RRD and/or DTMB. The report components will include, but are not limited to, the following items:

• Detailed description of all Site activities;

• Volume of materials removed;

• Digital photographs taken throughout the project with narrative descriptions;

• Site figures and tables;

• Transportation and disposal/recycling records;

• Copies of weekly progress reports;

• Copies of job and health and safety meeting minutes;

• Copies of approved permit applications; and

• Laboratory analytical sheets and chain-of-custody records.

Upon completion of restoration activities, AECOM will arrange for a final inspection and prepare DTMB form 445 (Certificate of Substantial Completion of Contract Work). All work will be compared to specifications and a punch list of items (if any) requiring correction or additional work will be prepared. AECOM will verify completion of such items, and the TC will complete/submit the DTMB form 437 (Guarantee and Statement). MDEQ-RRD / DTMB will execute a balancing change order based on AECOM documented quantities to adjust remaining quantities and respective values.

One (1) hard copy and an electronic copy of the draft summary report will be submitted to the MDEQ-RRD and/or DTMB for review before preparation of the final document. After written comments have been received, they will be reviewed and incorporated into the revised document, as appropriate. Hard copies and electronic copies of the final report will be submitted to the MDEQ-RRD and/or DTMB.

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3 Project Personnel

Mr. Brad Hoare, PG will serve as the Project Manager for the Pullman Industries Site. The Project Manager assembles a team from a pool of experts in specific areas to complete each portion of the project. The Project Manager is responsible for meeting the MDEQ-RRD project-specific objectives and executing the project within scope, budget, and schedule. Mr. Hoare will ensure the MDEQ-RRD's objectives are met for this project, and will ensure that the MDEQ-RRD SPM is provided with updates and reports in a timely fashion and relay any concerns from the SPM back to the project team.

Mr. Doug Wehner will serve as the Senior Construction Manager for the Pullman Industries Site. Mr. Wehner will assist the Project Manager in the technical execution of all elements of the Pullman Industries project. Engineering assistance for the specifications and construction oversight will be overseen by Mr. Stephan Cervi, PE.

Mr. James Janesak will serve as the on-site Construction/Environmental Manager for the Pullman Industries Site. The on-Site Construction/Environmental Manager will assure that the TC follows all of the specifications laid out in the WP, documents and reviews all quantities of material/water/soil removed from the site or material brought to the site, and maintains project schedule. The on-Site Construction/Environmental Manager will also direct the TC regarding the removal of contaminated soil, collect confirmation samples, submit samples to the laboratory for analysis and document the conditions of the soils prior to backfilling/restoration.

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4 Project Schedule/ Budget

AECOM will initiate work immediately following authorization to proceed from MDEQ-RRD. The following is a list of assumptions that have been used to develop the associated costs and may affect the completion of the project as proposed:

• Access to the Site and other properties has been or will be obtained by MDEQ-RRD for AECOM and its subcontractors.

• Level D protection will be used for field activities.

• Excavation limits will extend to a maximum depth of 7 feet below grade and will not extend into the roadway right-ofway. If the excavation limits are found to extend into the roadway right-of-way, additional evaluation of the conditions and an augmentation to the project scope and budget will be required.

• No abatement of Lead or Cadmium containing Paint and/or Asbestos Containing Materials (ACM) will be necessary and wetting of any suspect or presumed ACM will be acceptable.

• Any dust or air monitoring during demolition activities will be performed by the TC or others.

• Shipments of analytical samples will be invoiced as an expense.

• Analytical costs have not been included in the estimated costs provided for the tasks associated with this SOW. Associated analytical costs will be directly billed to the MDEQ-RRD through the MDEQ Laboratory in Lansing, Michigan. All analytical work will be performed by the MDEQ laboratory or an MDEQ approved overflow laboratory. AECOM estimates the State Laboratory costs for the verification sampling discussed in Section 2.3.4 to be $15,745.

• All wastes generated at the Site are assumed to be non-hazardous.

• AECOM will provide only one (1) addendum to the bid documents.

• Comments on AECOM deliverables will be received from the MDEQ-RRD within two weeks.

• AECOM will provide only one (1) round of edits to the bid documents based on MDEQ-RRD, DTMB and the MDEQ Procurement unit review and collective comments.

• Only one (1) Site walkover and pre-bid meeting will be required.

• Groundwater will not impact the progress of the excavation.

• Adverse weather conditions do not prolong the execution of field work.

• Abandonment of any wells within the excavation area will be completed using granular bentonite hole-plug or bentonite/Type I Portland Cement grout if there are any remaining portions of the well in the excavation.

• No unforeseen changes to the scope and situations out of MDEQ-RRD's and AECOM's control occur.

AECOM estimates that the work described in this WP can be completed for a total of $199,186 including labor and other direct

costs (ODCs).

TASK Labor ODCs Subcontractor

Task 1 Pre-Demolition/Excavation/Restoration Activities $38,521 $2,300 $4,300

Task 2 Project Administration $5,771 $50 -Task 3 Demolition, Excavation and Restoration Oversight Services $94,968 $21,375 -

Task 4 Reporting $8,956 $200 -

Labor/ODCs/Subcontractor Subtotals: $148,216 $23,925 $4,300

TOTAL PROJECT BUDGET: $176,441

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