A2_H_Building_Power_Plant_Asbestous_Survey.pdf

LIMITED-SCOPE ASBESTOS SURVEY REPORT

MCF – Shakopee Power Plant

Shakopee, Minnesota

Angstrom No. 02-0203

Prepared by:

Angstrom Analytical Inc.

12203 Princeton Avenue

Eden Prairie

MN 55347

(952) 941-4805

February 3rd, 2002

Exhibit A2

Table Of Contents

1.0 Introduction

1.1 Purpose

1.2 Scope of Work

2.0 Project Results

2.1 Area of Investigation

2.2 Bulk Analysis Results

2.3 Floor Plans and Sample Location Diagrams

2.4 Response Action Ratings and Alternatives

3.0 Recommendations

3.1 Long-Term Response Actions

3.2 Deferred Action Consideration

4.0 Asbestos Building Survey Remarks

5.0 Licenses and Certifications

LIMITED-SCOPE ASBESTOS SURVEY REPORT

MCF – Shakopee Power Plant

Shakopee, Minnesota Angstrom No. 02-0203

1.0 Introduction

1.1 Purpose

Angstrom Analytical Inc. (Angstrom) was contracted to perform a survey for asbestos-containing materials (ACM) for the Power Plant located on the campus of the Minnesota Correctional Facility (Shakopee) in Shakopee, Minnesota. The purpose of the survey was to identify and assess accessible materials that contain asbestos so as to provide an overall survey and inventory of accessible ACM. Angstrom’s services were requested by Mr. Pat Klaren, DSBC, State of Minnesota.

1.2 Scope of Work

On January 30th, 2002 MN licensed asbestos inspectors as representatives of Angstrom Analytical, Inc. conducted a building survey for the identification and assessment of accessible suspect ACM of the MCF – Shakopee, Power Plant. To date, the following work has been completed.

A walk-through of the building’s interior spaces, with observations of accessible suspect ACM and assessment of potential hazards from suspect

ACM.

Suspect ACM bulk sample collection from representative areas and material types.

Analysis of bulk samples by polarized light microscopy using U.S.

Environmental Protection Agency (EPA) Method 600/M4-82-020.

Preparation of this building survey report, including sample analysis results.

Compilation of an inventory of the identified ACM, by floor and room number.

2.0 Project Results

2.1 Area of Investigation

The project consisted of 1 structure, which is described in this report as follows:

• Power Plant – A multi-level structure used to supply heat to the core building. Two unused silos are in place, which were at one time used to store woodchips used for fuel to fire the boilers.

The name of this building / structure was designated or taken from verbal and written information Angstrom personnel received from Mr. Pat Klaren, DSBC, State of Minnesota. Building materials were identified and assessed in all areas requested by Mr.

Klaren. Exempted areas include, but are not limited to, inaccessible areas that would need demolition of major building components, sheetrock or plaster on lath ceilings, walls and various pipe chases.

These materials were then grouped into homogenous systems and sampled, as explained in section 4.0 “Asbestos Building Survey Remarks.” The survey did not include inaccessible interior components (e.g. pipe insulation in concealed chases).

2.2 Bulk Analysis Results

Please refer to the following section of this report for the analytical laboratory results of the samples collected, quantities, the response ratings & the material’s locations and floor plan maps.

Abbreviation Code List

DAMAGE POTENTIAL - damage potential of the material

PSD - potential for significant damage PD - potential for damage

COND - condition of material

N - little or no damage D - moderate damage SD - significant damage

UNITS - units of measurement

LF - linear foot SF - square foot EA - fitting

MATERIAL

CP - ceiling panel PI - pipe insulation CT - ceiling tile PFI - pipe fitting insulation CTA - ceiling tile adhesive FG - fiberglass FT - floor tile corr - corrugated paper FTA - floor tile adhesive BB - baseboard BBA - baseboard adhesive

TYPE OF ASBESTOS

ANTH - Anthophyllite CHR - Chrysotile AM - Amosite CROC - Crocidolite ACT - Actinolite TREM - Tremolite

* These samples were not analyzed. These results were inferred as consistent with the analyzed samples in the homogeneous set.

ND - No asbestos was detected in the sample submitted for analysis.

NS - Material not sampled.

NAC - Material not accessible.

< - less than the value specified.

Pr ep ar ed b y:

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Tr em ol ite

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Th es e sa m pl es w er e no t a na ly ze d.

Th es e re su lts a re in fe rr ed a c on si st en t w ith th e an al yz ed sa m pl es in th e ho m og en eo us se t.

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Power Plant - Discussion

• Power Plant – A multi-level structure used to supply heat to the core building. Two unused silos are in place, which were at one time used to store woodchips used for fuel to fire the boilers.

Representative bulk samples of suspect ACM were acquired from the building. Materials considered suspect and subsequently sampled included:

• TSI on pipes • TSI on ducting

• Gasket material • Boiler insulation

• Caulking compound • Ceiling tiles

• Sheetrock, tape and compound • Plasters

Of the materials sampled, none were found to be asbestos-containing (pursuant to EPA definitions). However, samples of roofing materials and fire door cores were not collected as part of this survey. Further testing is recommended prior to any disturbance. Further, white TSI was noted on an exhaust pipe near the ceiling of the generator room. White TSI could not be reached and should be assumed to be asbestos-containing until tested.

2.3 Floor Plans

& Sample Location Diagrams

2.4 Response Action Ratings and Alternatives

There are four recognized alternative courses of action to control ACMs in buildings: (1) removal and disposal; (2) enclosure; (3) encapsulation; and (4) no action, with implementation of an operations and maintenance (O & M) / continued surveillance program. The selection of any particular alternative should be based on intended use of the building, exposure potential, construction or demolition activity, cost, and current regulations.

Each Assessment Table includes a response action based on factors such as friability, accessibility, potential for disturbance, etc. Definitions for the response ratings are listed below:

0 = Material does not contain detectable amounts of asbestos and requires no asbestos related abatement action.

1 = Material contains asbestos, was non-friable, and requires no abatement action unless sanded, abraded, drilled, or otherwise disturbed. We recommend periodic reassessment of condition.

2 = Material contains asbestos and was friable. Damage was not observed; no immediate abatement action is required. We recommend periodic inspections for confirmation of the condition of the material.

3 = Material contains asbestos, was friable, and shows signs of localized damage with a potential for disturbance. Repair or removal is recommended to reduce the potential for fiber release. Periodic inspections are highly recommended.

4 = Material contains asbestos, was significantly damaged, and immediate removal is recommended.

3.0 RECOMMENDATIONS

3.1 Long-Term Response Actions

Please note that any asbestos-containing building materials that may become friable during demolition must be removed prior to that time, pursuant to EPA National Emissions Standards for Hazardous Air Pollutants regulations.

3.2 Deferred Action Consideration

The EPA has indicated that there are no longer grounds for completely deferring action once asbestos is identified in a building. Under ideal conditions (minimum access by occupants, no mechanical vibrations, no physical or water damage, no excessive airstream exposure, etc.), the minimum corrective action should be implementation of an O&M program and periodic surveillance of the material. An O&M program would require the identification of all accessible asbestos in the building and establishment of guidelines for proper safety precautions, cleaning methods, etc., that should be undertaken when emergency or routine maintenance work may disturb asbestos.

Please note that recommendations in this report to defer action regarding certain materials are accompanied by a recommendation to implement an O&M program. A recommendation to defer action means that, in our opinion, the condition of the particular material at the time of observation was such that release of airborne fibers appeared relatively low, and that other response actions did not appear to be warranted at the time.

Any changes in the condition of the material may warrant corrective actions at a later date. The effective management of these particular situations is, therefore, crucial.

4.0 Asbestos Building Survey Remarks

Prior to the collection of bulk material samples, suspect ACM was categorized into homogeneous material types and areas. A homogeneous material type is defined as friable or non-friable suspect ACM that has the same visual appearance (color, texture, pattern), that was either applied or constructed during the same general time period.

Material composition appeared to be consistent within a defined type and area. Friable materials are those that can be crushed, pulverized, or reduced to powder by hand-pressure when dry.

The samples were collected at random locations from the predetermined homogeneous sampling areas to provide analytical data to document and evaluate current site conditions. Data were obtained from discrete sample locations, and no guarantee is given that the inferred conditions currently exist. Materials were wetted prior to sampling to minimize potential fiber release; the samples were then sealed in polyethylene bags.

Bulk samples were analyzed according to EPA Method 600/M4-82-020, utilizing polarized light microscopy and dispersion staining techniques. The lower detection limit for verification of bulk asbestos fibers is 1 percent asbestos by volume. The method cited above provides the percentage of asbestos present and distinguishes the following types of asbestos: chrysotile, amosite, crocidolite, tremolite, actinolite, and anthophyllite. The portions of the samples that were not consumed in the analysis will be retained by Angstrom for a period of 30 days from the date of this report. The samples will be disposed of if Angstrom does not receive written notification prior to the 30th day.

The sets of samples from each homogeneous area were analyzed until positive. That is, under the EPA guidelines, once a sample in a set from a homogeneous material is found to contain greater than one percent asbestos by volume, the homogeneous material area is assumed to contain asbestos and additional sample analysis is terminated. This information is used only to determine whether a material is ACM and the appropriate response actions that should be taken.

Limitations of Asbestos Building Survey

The quantity of samples, sample locations and analyses performed were selected to provide analytical data to document and evaluate current site conditions. Data was obtained from discrete sample locations, and no guarantee is given that the inferred conditions exist throughout an entire area. The reporting of bulk analytical results are presented as estimates resulting from an analysis by an EPA approved method(s). This information should be used only to determine appropriate response actions and should not be construed as positive confirmation or of any make-up or material identity.

This survey pertains to either a medium or maximum security, Minnesota Correctional Facility (MCF). As such, it must be understood and accepted by the reader, or user, of this document that there are inherent limitations, due primarily to security constraints:

Due to access restrictions to some areas of a building/structure, not all functional spaces were assessed. On occasion, Angstrom was only afforded limited time access to building spaces. These instances are noted in the body of the report text. Further, very limited photography was allowed. Indeed, a permit is required from DOC to bring a conventional 35mm camera into a facility. No pictures which would include an inmate’s image or any facility security measure was allowed. This makes a photographic catalog/inventory of ACM infeasible. Note also that exhaustive and destructive testing of building components in order to locate, identify and quantify asbestos containing materials in concealed building spaces, including but not limited, to sealed utility chases, spaces above hard plaster ceilings, fire doors, etc. has not been performed. It is recommended that prior to future remodeling projects or indeed ultimate demolition of the structure, a further invasive assessment and testing program should be embarked upon, to find hidden hazardous materials.

Any discussion or recommendations contained in this report represent our professional opinions. These opinions are based on currently available information and are arrived at in accordance with currently accepted industrial hygiene practices at this time and location. Other than this, no guarantee is implied or intended.

This asbestos survey is not (and should not) be used as a project design document for the purposes of asbestos abatement. This document is to be used as a planning tool for future asbestos containing material, hazard mitigation and is an inventory of such asbestos containing materials. This survey is not a substitute for site specific asbestos abatement specifications and drawings and is not a biddable construction document.

This report was prepared by Angstrom Analytical, Inc.

Prior asbestos inspection and survey work may be attributable to other firms. This is duly noted and acknowledged where appropriate throughout the report and survey tables / asbestos containing material inventories.

________________________________ Date____________________ Charles Tye Asbestos Inspector #I395 Certified by State of Minnesota

________________________________ Date____________________ Darrell Potocnik Asbestos Inspector #I2219 Certified by State of Minnesota

5.0 Licenses & Certifications