B09_Asbestos_and_Lead_Report-_Wawona_Hotel_Roof_Nov2019-_Amd1_0001.pdf

Leon Environmental Services 4545 N. Brawley Ave., Suite 104, Fresno, CA 93722

Phone: 559.274.9200 Fax: 559.274.9240 Email: LeonEnviro@comcast.net

November 22, 2019

Garrett Chun National Park Service 5083 Foresta Rd.

El Portal, CA 95318

Re: Asbestos Bulk Samples

Wawona Hotel, Roof Yosemite National Park, CA Job No. C151-19

Dear Garrett:

Attached are the asbestos sampling results for the above referenced building.

This report includes conclusions, recommendations and bulk analysis results. If you have any questions or need additional information, please do not hesitate to call.

Thank you for using Leon Environmental Services. We look forward to working with you in the future.

Respectfully, Tommy Leon Certified Asbestos Consultant Certification No. 05-3882

Sampling Site: Wawona Hotel, Roof, Yosemite National Park, CA C151-19

ASBESTOS ANALYSIS RESULTS

A total of 01 sample of suspect material was collected by a state certified asbestos inspector at from the roof of the Wawona Hotel in Yosemite National Park, CA. The sample collection areas were determined by the information given to the inspector by Brian Fulce of Fulce Engineering about the impending remodel/renovation that is planned for this building. Western Analytical Laboratory, Inc., a NVLAP accredited laboratory performed a total of 01 analysis from the 01 sample collected. The chain of custody from Leon Environmental Services and the report from Western Analytical contain a full list of all samples taken from this site.

Sample Location Material % Of ACM Friable

01 Roof Roofing Felt ND

COMMENTS AND RECOMMENDATIONS

All samples of suspect materials from the selected areas of this site were negative for asbestos.

CONCLUSIONS AND REGULATIONS

Based on our survey, sampling and subsequent laboratory analysis and regulatory guidelines affecting this site, the types of ACM identified on this page require removal (in most cases) prior to demolition and/or renovation procedures to comply with local, state and federal agencies. The US EPA NESHAP (40 CFR Part 61 – November 20, 1990) requires materials containing greater than one percent asbestos be removed prior to renovation or demolition. If those materials are friable or likely to become friable due to the forces expected to act upon them during renovation or demolition, they become a regulated asbestos containing material (RACM) and require a 10-day notification to the local Air Pollution Control District prior to abatement.

Cal/OSHA worker health and safety regulations apply during any disturbance of ACM by a person while in the employ of another. This is true regardless of friability or quantity disturbed. If there is greater than 100 square feet of ACM which will be affected by the demolition, a California Licensed Contractor who is registered with Cal/OSHA for asbestos is required. The regulations regarding asbestos are found in Title 8 CCR Section 1529, and also include formal notification requirements to Cal/OSHA at least 24 hours prior to removal. It is required that removal be conducted with the material kept in a wetted state to contain dust and hazardous emissions.

CAL OSHA--------Construction Industry--------8CCR, 1529

1. The construction industry standard covers employees engaged in demolition and construction, and the following related activities likely to involve asbestos exposure: removal, encapsulation, alteration, repair, maintenance, insulation, spill emergency cleanup, transportation, disposal and storage of ACM.

2. Demolition contractors typically require that a building owner/operator accept responsibility for removal of all ACM found during the building inspection prior to start of demolition activities.

3. Non-friable and non-regulated ACM, in most cases, may be disposed of as construction debris in a landfill that accepts ordinary construction debris. All friable waste containing more than 1% asbestos (RACM) should be manifested as hazardous waste for disposal purposes.

LEAD BASED PAINT ANALYSIS RESULTS

The sample collection areas were determined by the information given to the inspector by Brian Fulce of Fulce Engineering about the impending remodel/renovation that is planned for this building. All paint samples were analyzed HUD Guidelines by XRF. The samples listed below are positive for Lead Based Paint (LBP).

Sample Sample Location Type Substrate Color XRF Result

(mg/cm²) LBP

56 Exterior Window Sill Paint Wood White 15.80 Yes

57 Exterior Window Frame Paint Wood Green 7.60 Yes

58 Exterior Wall / Fascia Paint Wood White 25.90 Yes

LBP COMMENTS AND RECOMMENDATIONS

The White Paint on the exterior window, window frames, siding, and fascia of the Wawona Hotel is positive for Lead at > 1.0 mg/cm² level by XRF.

Paint samples tested for this survey that were above the 1.0 mg/cm² level by XRF level established by HUD are considered Lead Based Paint (LBP). All homes built prior to 1978 are assumed to contain Lead Based Paint. Lead safe work practices should be in place during all any construction or demolition that would affect these areas.

All loose and flaky LBP should be removed prior to demolition or renovation, collected and handled as one waste stream. Based on the levels of LBP identified in the building survey, Leon Environmental recommends that only qualified Lead Abatement Company with properly trained and equipped individuals be used on this project. Procedures and engineering controls must be designed to follow CALOSHA and Department of Health Services (State of California) requirements.

The federal and CALOSHA regulations for lead in construction do not specify a level of a lead in paint that classifies it as LBP. However, federal and state OSHA regulations specify airborne lead levels that should not be exceeded during construction without appropriate protection and training.

The action level for lead is 30 micrograms per cubic meter of air (µg/m³) and the permissible exposure limit (PEL) is 50µg/m³. These airborne lead levels can be exceeded during construction or demolition activities such as scraping, sanding, grinding, blasting, and torching LBP surfaces, even when levels of lead in paint are far below the HUD definition of LBP of 1.0 mg/cm² or 0.5 percent lead by weight.

OSHA Lead in Construction Standard Cal/OSHA 8 CCR 1532.1 shall apply whenever construction work is conducted where employees may be exposed to lead.

Beginning April 2010, new federal law (EPA RRP rule) will require that contractors performing renovation, repair and painting projects that disturb lead-based paint in homes, child care facilities and schools built before 1978 that a child under age six visits regularly to be certified and follow specific work practices to prevent lead contamination.

Also, beginning April 2010, federal law will require contractors that disturb lead-based paint in homes, child care facilities and schools, built before 1978 to be certified and follow specific work practices to prevent lead contamination.

LBP CONCLUSIONS AND REGULATIONS

The Department of Housing and Urban Development (HUD) considers a paint to be a lead-based paint hazard when the content of the paint exceeds 0.5% or 5000 ppm.

California Occupational Safety and Health (OSHA) regulations require employee personnel monitoring at any detectable levels until statistically reliable results indicate that exposure will remain consistently below the OSHA Action Level of 30 micrograms/m3 and the Permissible Exposure Level of 50 micrograms/m3 for an 8 hour day. The employer must then produce a “Negative Exposure Assessment” to indicate that it is not possible with the specific lead-based paint product to create excessive lead exposure levels.

LIMITATIONS OF LIABILITY

Conclusions and recommendations presented in this report are qualitative judgments based on the prevailing regulations and accepted industry standards at the time of the report issuance. Leon Environmental Services provides no other guarantees, either expressed or implied. All quantities of materials listed herein are estimates for sampling purposes only, and should be verified by Owner representative or an abatement contractor prior to asbestos abatement.

The nature of demolition and asbestos abatement is such that materials can be uncovered which previously were unknown to exist. Therefore, Leon Environmental Services cannot be responsible for materials not previously detected due to lack of accessibility or concealment, although every effort was made during the inspection to detect all suspect materials. If any materials other than those included herein are discovered during renovation or demolition, it must be assumed that the materials are asbestos containing, and should be treated accordingly until further testing and analysis is performed.

The data interpretations and recommendations are based solely on information available to Leon Environmental Services at the time of our inspection. The customer recognizes that site conditions or accessibility may vary, from those encountered at the time of our inspection and sample collection. Varying conditions or access could result in additional information that would lead us to revise conclusions and recommendations. Leon Environmental Services will not be responsible for the interpretation or use by others of information contained within this report.

Thomas Leon DATE:

Certified Asbestos Consultant Certification No. 05-3882 *Abbreviation Key:

Asbestos Containing Material — ACM (equal to or greater than 0.1% by weight) Vinyl Asbestos Tile – VAT No Asbestos Detected--N.A.D or N.D.

Homogeneous—H Not Sampled--NS

Richard “Danny” Leon CAC Certification No. 04-3708 Tommy Leon CAC Certification No. 05-3882

4545 N. Brawley Ave., Suite 104, Fresno, CA 93722 Phone: 559.274.9200 Fax: 559.274.9240 Email: LeonEnviro@comcast.net

Job C151-19 / Sample Location Diagram

Wawona Hotel Roof / Yosemite National Park, CA Brian Fulce, PE / Fulce Engineering

Drawing not to Scale

Y = Exterior Samples X = Interior Samples R = Roof Samples

N

R 01

Wawona Hotel Yosemite National Park, CA

November 19, 2019 XRF Table 1

Reading No Type Units Site Room Side Component Substrate Color Results PbC 56 PAINT mg / cm ^2 C151-19 EXTERIOR A WINDOW SILL WOOD WHITE Positive 15.80 57 PAINT mg / cm ^2 C151-19 EXTERIOR A WINDOW FRAME WOOD WHITE Positive 7.60 58 PAINT mg / cm ^2 C151-19 EXTERIOR A WALL WOOD WHITE Positive 25.90