B08_Attach 3 Report 8_Crater Lake VC Discovery Demo.pdf

140P2020P0007 CRATER LAKE VC DISCOVERY DEMO Dark Horse Const.8/23/20

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Report Work Item R.1 –

An 85’ Straight Boom was used to access front chimney cap from parking lot. Upon inspection there were set bolts that appeared to be holding cap down from moving.

Upon removal/loosening of bolts, the cap would not raise upwards without significant force. Even with significant force being applied, it moved upwards less than an inch. Since the stones and mortar were easily visible without lifting the cap, consultants were able to inspect conditions without cap removal so the actual removal effort was abandoned.

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WORK ITEMS 1.1, 2.1, 2.2 Holes cut open for inspection, Mold Testing, and restoring. Since Bryce with Rim Architects was documenting, I do not have pictures of open holes, just the holes after making the repairs.

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Work Item E.1 Remove roofing and core drill two areas-

Roofing was removed and area on right (South) side of wall between windows was going to be drilled first. However, upon opening area, it was discovered that ductwork and conduit might hamper efforts, so moved to left (north) side to drill that hole first.

2nd rafter bay heading north from south window

2nd rafter bay heading south from north window

Due to the size of opening and where hole was required to be drilled (centered between back up concrete wall and stone), a custom steel base was fabricated and used in order to position and secure core drill. The first effort at drilling was done leaving the plate in place. After a lot of effort at sealing with putty, etc. it was decided that there was too much slurry leakage through unseen voids below plate. See red arrow above.

Void were slurry escaping below plate

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It was decided to remove plates at both core locations and install a concrete leveling pad to try and minimize leakage and fill voids in area.

The product used was Rapid Set Cement All, Non-Shrink Grout for leveling base.

North Core after concrete leveling pad installed

South Core after concrete leveling pad installed South Core before concrete leveling pad installed

Core rig anchor base on new leveling pad

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CORE RIG PLUMMED

Starting South Core

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North Core Depth drilled was 13’-5” with approx. 85% to 90% core retrieval.

Cores show a mix of concrete and stone.

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South Core Depth drilled was 10’-4” until hitting top of vent hole.

There were 2 significant voids encountered while drilling. One approx. 6” near top, and another 12” plus void at approx. 3’ down from top. It is assumed any missing cores would be somewhere in these voids.

Bottom piece of South core falling through vent hole

Bottom three pieces of core fell through bottom of core hole. Order unknown, so not numbered.

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Slurry Containment and Disposal

A note on slurry containment. Due to the many voids and cracks in the wall, slurry could be contained using a vac shroud as normal. On the North Core 90 percent of the water escaped via voids, etc. and ran out cracks on interior and exterior of wall. A slurry containment pond was made at exterior and solidified with a gel product (Diteq Slurry Gel) for lawful disposal. Wall was then scrubbed with plastic brush and water after work completed.

Any penetration at interior was retrieved after based board removed with Wet dry vacuums and disposed of with slurry. Blower was kept on wall and carpet to insure quick drying of area and materials.

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When roof was repaired, all 1 x sheathing boards removed were able to be reinstalled and covered with new ice dam. Some of the shake were reusable, however many were not and new ones were matched and blended in.

P.O. Box 1745 Jacksonville, OR 97530 CCB# 226480 (541) 770-2482 Fax (541) 772-0293 www.wsenvironmental.com

ASBESTOS SURVEY

Steel Visitor Center, Crater Lake, OR

Introduction

Western States Environmental Services was contracted by Chris Zach w/ Dark Horse Construction, to perform a limited survey at Steel Visitor Center Crater Lake National Park Oregon. The purpose of this activity was to determine the presence of asbestos building materials (ACBM) and Mold prior to remodel.

Asbestos Survey

Kerry Chesnut of Western States Environmental Services collected samples of suspect ACBM from the location on August 11, 2020. Mr. Chesnut is an accredited Building Inspector according to the Asbestos Hazard Emergency Response Act and Asbestos School Hazard Abatement Reauthorization Act (AHERA/ASHARA), Certification IN–19–7456B, exp.

2/19/2021.

Owner: Crater Lake National Forest Structure Type: Commercial Area: Office, Stairwell, Hall

Asbestos Analysis

All areas of the work zone were inspected for the presence of “suspect” ACBM. Samples were collected and catalogued for analysis. Samples were then forwarded to EMSL Analytical of San Leandro California, under chain of custody protocol for analysis utilizing Polarized Light Microscopy (PLM).

Analysis Results

Sample

ID

Location Appearance/Resp onse Action

Friable / non-Friable

% / Type

20-181-4 Top of Stairs wall opening duct tape White - Stable Friable Non-Detect Friable/Non-friable does not indicate the presence of asbestos Note: Bold/Red indicates asbestos above 1%.

Recommendations

According to OR-DEQ statute, all areas testing positive (> 1%) for asbestos must be abated either directly by the homeowner in the case of a residence, or by an accredited / Oregon licensed, Asbestos Abatement Contractor prior to remodel. The laboratory results determined that asbestos is not present. Additionally, no other materials in the anticipated work zone are suspect for asbestos. Asbestos abatement is not required prior to structural demolition.

Mold Analysis

All areas of the work zone were inspected for the presence of “suspect” Mold. Samples were collected and catalogued for analysis. Samples were then forwarded to EMSL Analytical of San Leandro California, under chain of custody protocol for Microscopic Examination.

Analysis Results

Sample ID Location Result Category

20-181-1 Small office wall opening drywall paper Rare 20-181-2 Stairwell top well opening drywall paper Rare 20-181-3 Stairwell wall opening drywall paper Rare

Lab Results – See Attached

Additional Notes

Although every effort has been made to determine the presence of asbestos, it is possible that some materials may be hidden in inaccessible areas such as inside wall cavities, interior building ceilings, crawl spaces, etc. Therefore, caution should be exercised during demolition to be continually observant of additional “possible” asbestos containing materials. If suspect materials are discovered, work should stop, and sampling should be undertaken to determine if asbestos is present with proper abatement procedures exercised if positive.

Regards, Kerry Chesnut August 13, 2020 http://www.EMSL.com / sanleandrolab@emsl.com

Tel/Fax: (510) 895-3675 / (510) 895-3680

464 McCormick Street San Leandro, CA 94577

EMSL Analytical, Inc. EMSL Order: 092013858

Customer ID: WSES75

Customer PO: 20-181

Project ID:

Attention: (541) 770-2482Phone: Pawnée Green

Western States Environmental Svs. Fax:

PO Box 1745 Collected Date: 08/11/2020

Jacksonville, OR 97530 Received Date: 08/12/2020

Analyzed Date: 08/13/2020

Project: 20-181 - STEAL VISITORS CENTER CRATER LAKE

Test Report: Microscopic Examination of Fungal Spores, Fungal Structures, Hyphae, and Other

Particulates from Bulk Samples (EMSL Method MICRO-SOP-200)

Lab Sample Number:

Client Sample ID:

Sample Location:

092013858-0001

20-181-1

092013858-0002

20-181-2

092013858-0003

20-181-3

092013858-9901

Dummy

092013858-9902

Dummy

SMALL OFFICE WALL OPENING

DRYWALL PAPER

STAIRWELL TOP WALL OPENING

DRYWALL PAPER

STAIRWELL WALL OPENING

DRYWALL PAPER

Dummy Dummy

Spore Types Category Category Category - -

Alternaria (Ulocladium) - - - - -

Ascospores - - - - -

Aspergillus/Penicillium - - - - -

Basidiospores - - - - -

Bipolaris++ - - - - -

Chaetomium - - - - -

Cladosporium Rare Rare Rare - -

Curvularia - - - - -

Epicoccum - - - - -

Fusarium - - - - -

Ganoderma - - - - -

Myxomycetes++ - - - - -

Pithomyces++ - - - - -

Rust - - - - -

Scopulariopsis/Microascus - - - - -

Stachybotrys/Memnoniella - - - - -

Unidentifiable Spores - - - - -

Zygomycetes - - - - -

Hyphal Fragment Rare Rare - - -

Insect Fragment - - - - -

Pollen - - - - -

Category: Count/per area analyzed - Rare: 1 to 10 Low: 11 to 100 Medium: 101 to 1000 High: >1000

- Denotes Not Detected.

++ Includes other spores with similar morphology; see EMSL's fungal glossary for each specific category.

* = Sample contains fruiting structures and/or hyphae associated with the spores.

Ariel Escoto, Micro Lab Manager or other Approved Signatory

No discernable field blank was submitted with this group of samples.

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received. Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted.

Samples analyzed by EMSL Analytical, Inc San Leandro, CA AIHA-LAP, LLC--EMLAP Accredited #101748

Initial report from: 08/13/2020 09:25 AM

For information on the fungi listed in this report, please visit the Resources section at www.emsl.com

Page 1 of 1Test Report DEVER1-2.9.0 Printed 08/13/2020 09:25 AM

EMSL Analytical, Inc.

464 McCormick Street San Leandro, CA 94577

Tel/Fax: (510) 895-3675 / (510) 895-3680 http://www.EMSL.com / sanleandrolab@emsl.com

092013860EMSL Order:

Customer ID: WSES75

Customer PO: 20-181

Project ID:

Attention: Phone:Pawnée Green (541) 770-2482

Fax:Western States Environmental Svs.

Received Date:PO Box 1745 08/12/2020 10:30 AM

Analysis Date:Jacksonville, OR 97530 08/12/2020

Collected Date: 08/11/2020

Project: 20-181 - STEAL VISITORS CENTER CRATER LAKE

Test Report: Asbestos Analysis of Bulk Materials via EPA 600/R-93/116 Method using Polarized

Light Microscopy

Sample Description Appearance % Fibrous % Non-Fibrous

Non-Asbestos Asbestos

% Type

20-181-4

092013860-0001

None DetectedMatrix

Non-fibrous (Other)

40%

40%

Fibrous (Other)20%White

Fibrous

Homogeneous

TOP OF STAIRS

WALL OPENING

DUCT TAPE

Analyst(s)

Jon Abdon (1) Cecilia Yu, Laboratory Manager or Other Approved Signatory

EMSL maintains liability limited to cost of analysis . Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations . The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. The above analyses were performed in general compliance with Appendix E to Subpart E of 40 CFR (previously EPA 600/M4-82-020 “Interim Method”) but augmented with procedures outlined in the 1993 (”final”) version of the method. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Non- friable organically bound materials present a problem matrix and therefore EMSL recommends gravimetric reduction prior to analysis . Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc San Leandro, CA NVLAP Lab Code 101048-3, WA C884

Initial report from: 08/12/2020 13:38:55

Page 1 of 1ASB_PLM_0008_0001 - 1.78 Printed: 8/12/2020 1:38 PM