A.07.24 Amendment 0003- Asbestos Survey.pdf

CESWL-SO 25 September 2017

MEMORANDUM FOR Mr. Terry Madden, Superintendent, Norfork Powerhouse

SUBJECT: Limited Asbestos Survey at Norfork Powerhouse for the Elevator Project

1. A limited asbestos survey was performed on 10 August 2017 at the Norfork Powerhouse located at 487 Highway 177 South, Mountain Home, Arkansas. The survey was performed by

Laura H. Weems, Arkansas Building Inspector, Certificate Number: 015340 (expires

2017/10/31).

2. The survey was requested to determine if the materials, including ventilation and pipe insulation and a cement-like, troweled-on surfacing material, expected to be impacted by the upcoming elevator project contained asbestos. A summary of all findings can be found in enclosure (1). A log of photographs of the sample locations is included in enclosure (2). The chain of custody is enclosure (3), and the laboratory results are in enclosure (4).

3. Methodology.

a. Arkansas Regulation 21, Arkansas Asbestos Abatement Regulation, and the EPA

Asbestos standards, 40 CFR 763, were followed.

b. Prior to sampling, a visual survey was performed to determine where, if any, homogeneous groups of materials existed. A sampling plan was then devised, and homogeneous materials were identified. For each homogeneous area, a minimum of three distinct samples were taken. For small patches (less than 6 linear feet) of insulation, one to two samples were taken.

c. For the pipe insulation, bulk samples were taken by wetting the material first and then using tools to remove all layers of the insulation from a small section (usually around one square inch). The holes created during the sampling process were covered with duct tape.

d. The asbestos samples were double bagged and shipped with a chain of custody to an

American Industrial Hygiene Association (AIHA) Accredited and National Voluntary

Laboratory Accreditation Program (NVLAP) laboratory for analysis. Analysis of the asbestos samples was performed using Polarized Light Microscopy in accordance with the Environmental

Protection Agency (EPA) method 600/R-93/116.

4. Findings. Asbestos was found in the insulation on the drain pipe in the attic space above the office spaces (in the area where the elevator is anticipated to be installed). The HVAC system insulation and the troweled-on surfacing material do not contain asbestos.

5. Under the Occupational Safety and Health Administration (OSHA) standard for asbestos in the work environment (29 CFR 1910.1001), information from this report should be used to update the Asbestos Management Plan and the Hazard Communication Program. Likewise, employees should be informed of where asbestos was located, and labels or signs should be installed so that employees are notified of what materials contain asbestos. Signs may be posted

CESWL-SO

SUBJECT: Limited Asbestos Survey at Norfork Powerhouse for the Elevator Project at the entrance to an area; however, employees need to be able to recognize what materials contain or are presumed to contain asbestos.

6. It is recommended that all work to remove asbestos containing material is performed by a

State of Arkansas licensed asbestos abatement company. Abatement work affecting the pipe insulation is considered Class I work under the OSHA Asbestos in Construction Standard (29

CFR 1926.1101), a standard that applies when there is repair, maintenance, or removal of materials that contain greater than 1% asbestos. If there are any questions as to whether they are performing the work in accordance with federal and state regulations, please let me know.

7. Thank you for allowing me to inspect your powerhouse for asbestos prior to the elevator project. Please note that this is a limited survey and that contractors may want to take their own samples prior to working in the powerhouse. If you have any questions, please call me at 501-

324-5617 or email me at laura.h.weems@usace.army.mil.

Encls LAURA H. WEEMS

Summary of Findings Industrial Hygienist

Photo Log

Chain of Custody

Laboratory Results

Homog.

Area Elevation Location & Description

Sample number Results

2 Attic Tan HVAC ventilation duct insulation and mastic NPH_22_A ND

2 Attic Tan HVAC ventilation duct insulation and mastic NPH_23_A ND

2 Attic Tan HVAC ventilation duct insulation and mastic NPH_24_A ND

3 Attic

Beige concrete-like material used as surfacing material over office ceilings.

NPH_25_A ND

3 Attic

Beige concrete-like material used as surfacing material over office ceilings.

NPH_26_A ND

3 Attic

Beige concrete-like material used as surfacing material over office ceilings.

NPH_27_A ND

5 Attic Drain pipe, off white insulation NPH_28_A 19% CH

Attic

Drain pipe, tan, olive and white hair & vermiculite insulation

NPH_29_A

2% AC; 10%

CH

4 Attic Drain pipe, beige insulation & black tar paper NPH_30_A 16.5% CH

5 Attic Drain pipe, off white insulation NPH_31_A NA

4 Attic Drain pipe, beige insulation & black tar paper NPH_32_A NA

Key:

AC - Actinolite Asbestos

Homog. Area - homogeneous area where the sampled materials appear to be of the same material. Analysis was stopped for the remainder of samples with each homogeneous area if there was a positive result as they are then presumed to also be positive.

NA - Not Analyzed (because it's presumed to have asbestos)

Summary of Limited Asbestos Survey Norfork Powerhouse

ND - None Detected

CH - Chysotile Asbestos

Elevator Project (samples taken 8/10/17)

1 Encl (1)

Page 1 Enclosure (2)

10 AUG 2017 Photograph Log

Norfork Asbestos Building Inspection (Limited) – Elevator Project

Photo 1

Samples NPH_22_A, NPH_23_A, and NPH_24_A

Attic Over Offices – Tan HVAC insulation (entire length of vent duct)

No Asbestos Detected

Page 2 Enclosure (2)

Photo 2

Samples NPH_28_A, NPH_29_A, NPH_30_A, NPH_31_A, and NPH_32_A

Attic Over Offices –Drain Pipe Insulation (entire length of pipe)

Chrysotile & Actinolite Asbestos Found (varying percentages)

Page 3 Enclosure (2)

Photo 3

Samples NPH_25_A, NPH_26_A, and NPH_27_A

Attic Over Offices – Off-white concrete-like surfacing material

No Asbestos Detected

RJ Lee Group, Inc.

350 Hochberg Road, Monroeville, PA 15146

Tel: 724-325-1776 | Fax: 724-733-1799

US Army Corps of Engineers (SWL-SO) 700 West Capitol Avenue Room 6512

Attention: Laura Weems Telephone: 501-324-5617

AOH1046726-0

Little Rock, AR 72201

09/18/2017

09/11/2017

Norfork Powerhouse-Elevator Project

Laboratory Report

Report Date

Sample Receipt Date

Authorization/P.O. No.

RJ Lee Group Job No.

Client Job No./Name

United States

Method: EPA/600/R-93/116

Analysis: Asbestos in Bulk Samples

Non-Fibrous Materials(%)Homogeneous

Client Sample Number

Asbestos Detected(%)

Analyst - Analysis Date

Non-Asbestos Fibers(%)

Matrix Material

RJLG Sample Number

# of Layers

10414801.HPL NPH_22_A HA 2 No AKB-09/14/2017

Description:

2 B, M

Calculated Composite - Tan Pipe Insulation / Brown Mastic

Layer Information:

ND 100 CE ND99%-Insulation Yes

ND 1001%-Mastic B, MYes

ND 99 CE 1

10414802.HPL NPH_23_A HA 2 No AKB-09/14/2017

Description:

2 B, M

Calculated Composite - Tan Pipe Insulation / Brown Mastic

Layer Information:

ND 100 CE ND95%-Insulation Yes

ND 1005%-Mastic B, MYes

ND 95 CE 5

Client Job No./Name: Norfork Powerhouse-Elevator Project RJ Lee Group Job No: AOH1046726-0

Laboratory Report (Cont)

Non-Fibrous Materials(%)Homogeneous

Client Sample Number

Asbestos Detected(%)

Analyst - Analysis Date

Non-Asbestos Fibers(%)

Matrix Material

RJLG Sample Number

# of Layers

10414803.HPL NPH_24_A HA 2 No AKB-09/14/2017

Description:

2 B, M

Calculated Composite - Tan Pipe Insulation / Brown Mastic

Layer Information:

ND 100 CE ND75%-Insulation Yes

ND 10025%-Mastic B, MYes

ND 75 CE 25

10414804.HPL NPH_25_A HA 3 Yes AKB-09/14/2017

Description:

1 Q, B, M

Beige Concrete Like Material

ND 100

10414805.HPL NPH_26_A HA 3 Yes AKB-09/14/2017

Description:

1 Q, B, M

Beige Concrete Like Material

ND 1 CE 99

10414806.HPL NPH_27_A HA 3 Yes AKB-09/14/2017

Description:

1 Q, B, M

Beige Concrete Like Material

ND 100

10414807.HPL NPH_28_A HA 5 No AKB-09/15/2017

Description:

2 T, B, OP, M

Calculated Composite - White And Beige Pipe Insulation / Black Tar Paper

Layer Information:

10 CH 80 CE 1080%-Insulation B, OP, MYes

55 CH 10 CE 15 H 2020%-Tar Paper T, B, MYes

19 CH 66 CE 3 H 12

10414808.HPL NPH_31_A HA 5 Not Analyzed -

Description:

Not Analyzed Previous Positive.

ND -

Non-Fibrous Materials(%)Homogeneous

Client Sample Number

Asbestos Detected(%)

Analyst - Analysis Date

Non-Asbestos Fibers(%)

Matrix Material

RJLG Sample Number

# of Layers

10414809.HPL NPH_29_A Yes AKB-09/15/2017

Description:

1 B, V, M

Tan, Olive And White Hair And Vermiculite Insulation

2 AC 10 CH 15 CE 50 H 23

10414810.HPL NPH_30_A HA 4 No AKB-09/15/2017

Description:

2 T, B, M

Calculated Composite - Beige Pipe Insulation / Black Tar Paper

Layer Information:

ND 99 CE 170%-Insulation MYes

55 CH 20 CE 2530%-Tar Paper T, B, MYes

16.5 CH 75.3 CE 8.2

10414811.HPL NPH_32_A HA 4 Not Analyzed -

Description:

Not Analyzed Previous Positive.

ND -

Non-Fibrous Materials(%)Homogeneous

Client Sample Number

Asbestos Detected(%)

Analyst - Analysis Date

Non-Asbestos Fibers(%)

Matrix Material

RJLG Sample Number

# of Layers

Authorized Signature:

Allan K. Bullock, Microscopist

DISCLAIMER NOTES

· "ND" indicates no asbestos was detected; the method detection limit is 1%.

· "Trace" or "<" indicates asbestos was identified in the sample, but the concentration is less than the method quantitation limit. PLM coefficients of variance range from approximately 1.8 at the quantitation limit of 1% to 0.1 at high fiber concentrations.

· Samples are archived for three months following analysis and are then properly discarded.

· These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which these results are used or interpreted.

· This test report relates to the items tested.

· This report is not valid unless it bears the name of a NVLAP Lab Code 101208-0 approved signatory.

· Any reproduction of this document must be in full in order for the report to be valid.

· This report may not be used to claim product endorsement by NVLAP Lab Code 101208-0, any agency of the U.S. Government or any other laboratory accrediting agency.

· Polarized-light microscopy is not consistently reliable in detecting asbestos in floor coverings and similar nonfriable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or treated as "non-asbestos-containing."

· Sample(s) for this project were analyzed at our: Monroeville, PA (AIHA #100364, NY ELAP #10884) facility.

· If RJ Lee Group, Inc. did not collect the samples analyzed, the verifiability of the laboratorys results are limited to the reported values.

· ((((100-A)/B)*C*100)+0.99)/100 = Asbestos Detected (%), where A=weight loss, B=total # of points counted, and C=total # of asbestos fibers counted.

ASBESTOS

= Amosite

= Actinolite

= Anthophyllite

= Chrysotile

= Crocidolite

= Tremolite

NON-ASBESTOS

= Cellulose

= Mineral Wool

= Fibrous Glass

= Synthetic Fibers = Hair

= Wollastonite

= Other Fibers

NON-FIBROUS MATERIALS

= Amphibole

= Binder

= Carbonates

= Clay

= Feldspar

= Gypsum

= Hydromagnesite

= Miscellaneous

= Mica

= Opaque = Organic

= Perlite

= Quartz

= Tar

= Vermiculite

AM

AC

AN

CH

CR

TR

CE

MW

FG

SF

H

W

OF

AM

B

CA

CL

F

G

HY

M

MI

OP

OR

P

Q T

V