Limited Hazardous Materials Survey Report

Limited Hazardous Materials Survey Report Contra Costa Community College Applied Arts Building Chiller Replacement Project 2600 Mission Bell San Pablo, California RGA Project No: R1167404 June 29, 2016 Prepared for: Contra Costa Community College District 500 Court Street Martinez, California 94553 Prepared by: RGA Environmental, Inc. 1466 66 th Street Emeryville, CA 94608 Report prepared by: Industrial Hygienist, CSST 13-5068 Brad Wallenberg Report reviewed by: Department Manager, CAC 03-3503 Kenneth Pilgrim

Table of Contents 1. Executive Summary... 1 2. Scope of Work... 3 3. Methods and Sampling Strategy... 3 4. Asbestos Results... 5 5. Lead Results... 5 7. Regulatory Requirements... 6 8. Recommendations to Implement Regulatory Requirements... 8 9. Limitations... 9 Appendices 1. Laboratory Results and Chain of Custody - Asbestos 2. Laboratory Results and Chain of Custody Lead 3. Sample Location Figure 4. Inspector Certificates

Limited Hazardous Materials Survey Report Contra Costa College Applied Arts Building 2600 Mission Bell Drive San Pablo, California 1. Executive Summary The following is a report of the limited hazardous materials survey conducted by Remington Caldwell, California Certified Asbestos Consultant (CAC) and California Department of Public Health (CDPH) Inspector Assessor with RGA Environmental, A Terracon Company, (RGA). The survey was performed on June 13, 2016 in the Applied Arts Building of the Contra Costa College Campus located at 2600 Mission Bell Drive in San Pablo, California. The scope of the survey was to identify hazardous materials including asbestos containing materials (ACMs) and lead containing paint with the potential to be impacted by the Chiller Replacement Project as depicted in drawing set dated June 13, 2016 and provided by the District. The survey area was limited to building areas and materials with the potential to be disturbed by the planned project. During the survey, eight (8) homogenous suspect ACMs were identified. Three (3) of the homogeneous suspect ACMs tested positive for asbestos content. Nine (9) painted finishes were sampled for potential lead content. Two (2) of the painted materials sampled were reported above the laboratory detection limit for lead. Table I summarizes the materials identified as ACMs. Table II summarizes the materials that were determined to be negative for asbestos content. Table III summarizes the lead concentrations of the materials sampled. Page 1

Limited Hazardous Materials Survey Applied Arts Building C1067 Chiller Replacement Contra Costa College San Pablo, California 2. Scope of Work The scope of the survey was as follows: Inspect the survey area for the presence of suspect ACMs and lead-containing paint with the potential to be impacted by the planned Chiller Replacement project. Collect a representative number of samples of suspect ACMs following the National Emissions Standard for Hazardous Air Pollutants (NESHAPs) protocol for sample collection for a renovation survey. Analyze asbestos bulk samples using polarized light microscopy (PLM) in accordance with EPA s July 1993 method for the determination of asbestos in bulk building materials - EPA 600/R-93/116. Collect paint chip samples of the primary painted surfaces within the survey area suspected to be lead containing for purposes of compliance with California Department of Occupational Safety and Health (DOSH) Lead in Construction Standard. Bulk samples and paint chips were analyzed at an accredited laboratory by Flame Atomic Absorption (AA) for Total Lead reported in parts per million (ppm). Submit written report including analytical results, regulatory requirements, conclusions and recommendations. 3. Methods and Sampling Strategy Visual Inspection Accessible materials were visually inspected in the survey area using the methods presented in the federal Asbestos Hazard Emergency Response Act (AHERA) regulations (40 CFR, Part 763) as a guideline. AHERA was originally only applicable to schools, however state and federal Occupational Safety and Health Administration (OSHA) and Asbestos School Hazard Abatement and Reauthorization Act (ASHARA) have adopted the AHERA sampling methodology for all buildings subject to demolition or renovation. Bulk Sampling of Asbestos Bulk samples of all suspect ACM homogeneous materials were collected. A homogeneous material is defined as a surfacing material, thermal system insulation, or miscellaneous material that is uniform in color, texture and age of construction. Examples of homogeneous materials include: Pipe-insulation produced by the same manufacturer and installed during the same time period; Resilient flooring of identical color and pattern; Troweled on surfacing materials located in contiguous areas. Page 3

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California The survey area was visually inspected for the presence of suspect materials. As materials were identified, bulk samples were obtained with the aid of a coring device or other hand tool and placed into individual sampling bags. Each sample was given a discrete identification number and recorded on field notes as well as chain-of-custody forms. Refer to accompanying tables and appendices for details on material sample locations and results. Bulk samples were transported to EMLab P&K (EML) in South San Francisco, California. Bulk Sampling of Suspect Lead Containing Materials Paint chip and/or suspected lead containing materials were collected using a hand scraper and were placed into individual plastic sampling containers. Each sample was provided a discreet sample number, which was recorded on a chain-of-custody form. Samples were transported to QuanTEM Laboratories (QuanTEM) in Oklahoma City, Oklahoma for analysis. Bulk Sample Analysis - Asbestos EML is accredited under the National Institute of Standards and Technology's National Voluntary Laboratory Accreditation Program (NVLAP) for determination of asbestos fibers in bulk materials. All samples were analyzed using polarized light microscopy (PLM) techniques in accordance with methodology approved by the U.S. Environmental Protection Agency (EPA). As set forth in the Code of Federal Regulations, 40 CFR Part 763, Appendix A to Subpart F, Section 1.2 and 1.7.2.4, the lower limit of reliability detection for asbestos using the PLM method is approximately one percent (1%) by volume. Cal-OSHA defines asbestos containing construction materials (ACCM) as those materials having asbestos content of greater than one tenth of one percent (>0.1%). When None Detected () appears in this report, it should be interpreted as meaning no asbestos was observed in the sample material above the reliable limit of detection for the PLM method. Note: under EPA assessment criteria, if a single sample of a homogeneous material tests positive for asbestos, all homogeneous materials within that building are considered to be asbestos containing. Bulk Sample Analysis Lead All paint samples were analyzed for lead content using the Flame Atomic Absorption spectroscopy in accordance to EPA Method SW846-3050B-7000B. When < appears in the lead sample report, it should be interpreted as meaning below analytical detection limit. Page 4

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California 4. Asbestos Results During the survey, eight (8) homogenous suspect ACMs were identified. Three (3) of the homogeneous suspect ACMs tested positive for asbestos content. One (1) material was assumed to be asbestos containing. All identified ACMs are listed below in Table I below. Material Description TABLE I ASBESTOS-CONTAINING MATERIALS Waste Material Location Category Asbestos Type Estimated Quantity Sealant, White Cooling Tower Flange sealant Cat. II 2% CH 20 sf Flange Gaskets Off-White Mastic/Sealant Cooling Tower, Chiller and Mechanical Room Chiller and Mechanical Rooms Applied on Fiberglass Pipe Insulation Ends and at Valve Bodies Cat. I 30-70% CH 15 gaskets Cat. II 2% CH 25 sf NA = Not Applicable, CH = Chrysotile, RACM = Regulated asbestos containing material (friable), Cat. I = Non-friable (note ACM must be reclassified as a RACM if rendered friable during removal), Cat. II = Category II Non-friable (note ACM must be reclassified as a RACM if rendered friable during removal), sf = square feet The materials that were reported as negative for asbestos content are listed in Table II below. TABLE II NON-ASBESTOS-CONTAINING MATERIALS Material Description Material Location(s) Silver Paint Stucco Wall Concrete Pad Wallboard with Joint Compound Green Neoprene Glue Chiller Tower Chiller Room Chiller and Mechanical Rooms Chiller and Mechanical Rooms Chiller Room 5. Lead Results Nine (9) painted finishes were sampled for potential lead content. Two (2) of the painted materials sampled were reported above the laboratory detection limit for lead. Table III below summarizes the sampling locations and results for the materials. Page 5

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California TABLE III LEAD SAMPLE RESULTS Sample Number Description/Location of Sample Results (ppm) Pb-01 Silver Paint on Metal on Chiller Tower <49.4 Pb-02 Tan Paint on Stucco Wall in Chiller Room <48.8 Pb-03 Pb-04 Tan Paint on Metal on Door of Chiller Room Green Paint on Metal on Equipment of Chiller Room 825 <49.8 Pb-05 Blue Paint on Metal Pipe in Chiller Room <49.8 Pb-06 Grey Paint on Drywall in Chiller Room <49.6 Pb-07 Pb-08 ppm = parts per million Grey Paint on Concrete Floor of Mechanical and Chiller Room White Caulk on Metal on Flange of Chiller Tower <49.5 <49.1 Pb-09 Green Paint on Neoprene in Chiller Room 522 7. Regulatory Requirements Asbestos Building materials within the survey area contain asbestos in concentrations greater than one tenth of one percent (0.1%). Impacting materials containing greater than 0.1% asbestos either through repair, maintenance, renovation or demolition activities triggers numerous regulations enforced by such agencies as OSHA (worker protection) and EPA (environmental exposure, transportation and disposal). Listed below are the regulations that apply if the materials are removed: Any individual who contracts to provide health and safety services relating to ACMs must be certified by Cal-OSHA as either a Certified Asbestos Consultant or a Site Surveillance Technician. The activities they are certified to provide include: conducting asbestos surveys; writing work plans or specifications for abatement; monitoring the work of abatement contractors; collecting air samples; and determining if the work area is safe for re-occupancy by non-asbestos workers. Regulation: Cal-OSHA 8 CCR 1529 (q)(1). If more than 100 square feet of materials that contain greater than 0.1% asbestos will be abated, they must be abated by a Cal-OSHA registered asbestos abatement contractor. Regulation: Cal-OSHA 8 CCR 1529 (R). Page 6

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California ACMs that are classified by OSHA as other/miscellaneous materials are present. Removal of these materials is considered a Class II activity according to Cal-OSHA regulations. Work practices and engineering controls for Class II work are specified in Cal-OSHA 8 CCR 1529 (g) (7-8). If more than 100 square feet or 100 linear feet of friable ACM will likely be removed, the abatement contractor must notify the Bay Area Air Quality Management District ten (10) days prior to removing the material. Regulation: BAAQMD Regulation 11, Rule 2. Friable ACMs greater than 1% asbestos must be manifested, transported, and disposed of as hazardous waste in accordance with the Department of Toxic and Substances Control (DTSC), a division of Cal-EPA. DTSC regulates disposal of asbestos waste. DTSC issues U.S. EPA hazardous waste generator identification numbers. Lead-Containing Materials Lead-containing paint was identified during the survey. Impacting lead-containing materials either through renovation or demolition activities triggers numerous regulations enforced by such agencies as OSHA (worker protection), EPA (environmental exposure, transportation and disposal), and Department of Public Health (DPH). Listed below are the regulations that apply if the lead containing materials are impacted during renovation activities: Federal OSHA as well as California OSHA regulates all worker exposure during construction activities that impact lead-containing materials. California OSHA enforces the Lead in Construction Standard in Title 8 CCR 1532.1. The scope covers construction work where employees may be exposed to lead during such activities as demolition, removal, surface preparation for re-painting, renovation, clean-up and routine maintenance. The OSHA specified method of compliance includes respiratory protection, protective clothing and equipment, housekeeping, hygiene facilities, medical surveillance, and training, among other requirements. California OSHA requires Department of Public Health Lead-Related Construction training if any lead related construction work in public buildings will exceed OSHA s permissible exposure limit (PEL) for lead. Disposal of all lead-containing paint and bulk materials is regulated at concentrations at or exceeding 1,000 ppm as stated in 40 Code of Federal Regulations (CFR) Part 263 - Land Disposal Regulations and Title 22, Division 4 Environmental Health of the California Administrative Code. Lead containing materials that exceed 50 ppm must be additionally analyzed to determine possible waste disposal restrictions with respect to lead. However, lead related work at any lead concentration is regulated under the OSHA statutes. Page 7

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California 8. Recommendations to Implement Regulatory Requirements Asbestos Develop a performance abatement specification or work plan for the removal or impact of the ACMs identified in the survey that will likely be disturbed by the planned seismic improvement project. The purpose of an abatement specification is to clearly define the scope of work for more competitive and accurate bidding as well as to reduce the number of costly delays and change orders during the project. Conduct a pre-bid job-walk for abatement contractors in order to obtain the most competitive pricing. Retain a Certified Asbestos Consultant or Site Surveillance Technician to provide onsite construction supervision of the asbestos abatement contractor to ensure utilization of proper work practices as stated in the work plan or specification. The Consultant also ensures that all local, state and federal regulations are followed and that the project remains on schedule. The on-site Consultant generates documentation of contractor work practices and training, and asbestos air sampling results. The on-site Consultant also ensures that all asbestos materials are removed by the abatement contractor and properly manifested. Request the Asbestos Consultant to collect a sufficient number of air samples on a daily basis to validate that the abatement contractor is not causing any releases of airborne asbestos fibers outside their work area. Request the Asbestos Consultant to visually review the work of the abatement contractor to verify that all the ACMs are abated. If the work areas pass the visual clearance, then final air clearance samples are collected to ensure that the area is safe for re-occupancy, or unregulated work. Request a final written report outlining all activities that transpired throughout the course of the abatement project. Lead-Containing Paint Lead containing debris that will be landfilled should be classified as hazardous waste if lead waste concentrations exceed either the total lead concentration or soluble lead concentration regulatory limits. We recommend the following actions prior to the start of renovation: Use only trained workers for disturbance of building components containing lead. All demolition work should be performed in accordance with the OSHA Lead in Construction Standard, Title 8 CCR 1532.1. Removal of lead-based paint should be performed by Department of Public Health Lead Related Construction trained workers. Page 8

Limited Hazardous Materials Survey Chiller Replacement Contra Costa College San Pablo, California Worker exposure, environmental monitoring, and proper engineering controls should be implemented throughout the lead related work. Contractor should adhere to OSHA and other applicable state and local regulations for worker protection, hazard communications, work practices, engineering controls and proper waste disposal. Proper waste stream categorization is required for the disposal of lead-containing materials such as paint debris, ceramic tile, and painted building components (intact) in accordance with the Department of Toxic Substance Control (DTSC). The disposal of lead-containing materials shall be coordinated with the landfill. 9. Limitations RGA warrants that the findings contained herein have been prepared in general accordance with accepted professional practices as applied by similar professionals in the community at the time of its preparation. Changes in the state of the art or in applicable regulations cannot be anticipated and have not been addressed in this report. The field and laboratory results reported herein are considered sufficient in detail and scope to determine the presence of ACMs and lead-containing paint identified in this report. The testing results represent a limited survey. The survey was limited to areas and materials in the building that will likely be impacted by the planned project. Other suspect asbestos and lead containing materials exist in the building that were not included in the scope of this survey. Also, note that this is a survey report and not an abatement specification. This document is not appropriate for competitive bidding or for use as an abatement specification. Page 9

Appendix 1 Laboratory Results and Chain of Custody - Asbestos

Report for: Ms. Karin Schroeter RGA Environmental, Inc. 1466 66th Street Emeryville, CA 94608 Regarding: Project: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EML ID: 1554478 Approved by: Dates of Analysis: Asbestos PLM: 06-14-2016 and 06-15-2016 Approved Signatory Dr. Kamashwaran Ramanathan Service SOPs: Asbestos PLM (EPA Methods 600/R-93/116 & 600/M4-82-020, SOP EM-AS-S-1267) All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. The results relate only to the items tested. The results include an inherent uncertainty of measurement associated with estimating percentages by polarized light microscopy. Measurement uncertainty data for sample results with >1% asbestos concentration can be provided when requested. EMLab P&K ("the Company") shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor. EMLab P&K, LLC EMLab ID: 1554478, Page 1 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Total Samples Submitted: 24 Total Samples Analyzed: 24 Total Samples with Layer > 1%: 9 Location: 1A, Silver Paint - Chiller Tower - Metal Exterior Lab ID-Version : 7205427-1 Silver Paint Location: 1B, Silver Paint - Chiller Tower - Metal Fan Cover Lab ID-Version : 7205428-1 Silver Paint Location: 1C, Silver Paint - Chiller Tower - Metal - Elec. Box Lab ID-Version : 7205429-1 Silver Paint Location: 2A, White Flange Caulk - Chiller Tower - West Lab ID-Version : 7205430-1 Gray Caulk 2% Chrysotile The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 2 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Location: 2B, White Flange Caulk - Chiller Tower - North Lab ID-Version : 7205431-1 Gray Caulk 2% Chrysotile Location: 2C, White Flange Caulk - Chiller Tower - East Lab ID-Version : 7205432-1 Gray Caulk 2% Chrysotile Location: 3A, Stucco Wall - Chiller Tower Room - South Wall - Wall to be Inspected Lab ID-Version : 7205433-1 Gray Stucco Location: 3B, Stucco Wall - Chiller Tower Room - South Wall - Wall to be Inspected Lab ID-Version : 7205434-1 Gray Stucco The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 3 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Location: 3C, Stucco Wall - Exterior Wall - West Wall - Wall to be Inspected Lab ID-Version : 7205435-1 Gray Stucco Location: 4A, Flange Gaskets - Valves - Chiller Tower - Flange Lab ID-Version : 7205436-1 Gray Gasket 50% Chrysotile Location: 4B, Flange Gaskets - Valves - Chiller Rm - (Not Tower) Flange Lab ID-Version : 7205437-1 Gray Gasket 30% Chrysotile Location: 4C, Flange Gaskets - Mechanical Room - Valve Flange Lab ID-Version : 7205438-1 Gray Gasket 70% Chrysotile The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 4 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Location: 5A, Concrete Pad - Chiller Tower Rm Lab ID-Version : 7205439-1 Gray Concrete with Paint Location: 5B, Concrete Pad - Chiller Rm Lab ID-Version : 7205440-1 Gray Concrete with Paint Location: 5C, Concrete Pad - Mechanical Room - Pad Under Pump Lab ID-Version : 7205441-1 Gray Concrete with Paint Location: 6A, Drywall/Joint Compound - Chiller Rm - Partition Lab ID-Version : 7205442-1 White Drywall White Joint Compound Tape White Compound with Paint Composite Non-: 20% Cellulose The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 5 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Location: 6B, Drywall/Joint Compound - Chiller Rm - Perimeter Wall (West) Lab ID-Version : 7205443-1 White Drywall White Joint Compound Tape White Compound with Paint Composite Non-: 20% Cellulose Location: 6C, Drywall/Joint Compound - Mech. Room Lab ID-Version : 7205444-1 White Drywall White Joint Compound Tape White Compound with Paint Composite Non-: 20% Cellulose Location: 7A, White and SI Mastic on End of Fiberglass and SI - Chiller Rm - CW Supply Lab ID-Version : 7205445-1 Off-White Mastic 2% Chrysotile Location: 7B, White and SI Mastic on End of Fiberglass and SI - Chiller Rm - CW Return Lab ID-Version : 7205446-1 Off-White Mastic Composite Non-: 10% Glass Fibers 2% Chrysotile The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 6 of 7

Client: RGA Environmental, Inc. C/O: Ms. Karin Schroeter Re: R1167404; Contre Costa College - C1067; 2600 Mission Bell, San Pablo, CA EMLab P&K 6000 Shoreline Ct, Ste 205, So. San Francisco, CA 94080 (866) 888-6653 Fax (623) 780-7695 www.emlab.com Date of Sampling: 06-13-2016 Date of Receipt: 06-14-2016 Date of Report: 06-15-2016 ASBESTOS PLM REPORT: EPA-600/M4-82-020 & EPA METHOD 600/R-93-116 Location: 7C, White and SI Mastic on End of Fiberglass and SI - Mechanical Room - CW Supply - After Pump Lab ID-Version : 7205447-1 Off-White Mastic 2% Chrysotile Location: 8A, Blk, Neoprene - Glue (Neoprene Painted Green) - Chiller Room - On Tank - (Part of Chiller Equipment) Lab ID-Version : 7205448-1 Black Non-Fibrous Material with Paint Location: 8B, Blk, Neoprene - Glue (Neoprene Painted Green) - Chiller Room - On Tank - (Part of Chiller Equipment) Lab ID-Version : 7205449-1 Black Non-Fibrous Material with Paint Location: 8C, Blk, Neoprene - Glue (Neoprene Painted Green) - Chiller Room - On Pipe - (Part of Chiller Equipment) Lab ID-Version : 7205450-1 Black Non-Fibrous Material with Paint The test report shall not be reproduced except in full, without written approval of the laboratory. The 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. EMLab P&K reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x". EMLab P&K, LLC EMLab ID: 1554478, Page 7 of 7

Appendix 2 Laboratory Results and Chain of Custody - Lead

Environmental Chemistry Analysis Report QuanTEM Set ID: 264975 Date Received: 06/14/16 Received By: Rachel Brooks Date Sampled: Time Sampled: Analyst: CR Date of Report: 6/15/2016 AIHA ID: 101352 Client: Acct. No.: Project: Contra Costa College - C1067,21001 Location: Project No.: RGA Environmental K. Pilgrim 1466 66th Street Emeryville, CA 94608 C018 Mission Bell, San Publo, CA R1167404 QuanTEM ID Client ID Reporting Date/Time Matrix Parameter Results Limits Units Analyzed Method 001 002 003 004 005 006 007 008 009 Pb-1 Pb-2 Pb-3 Pb-4 Pb-5 Pb-6 Pb-7 Pb-8 Pb-9 Paint Paint Paint Paint Paint Paint Paint Paint Paint Lead <0.00494 0.00494 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00488 0.00488 % 06/15/16 16:15 P EPA 7000B (1) Lead 0.0825 0.00493 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00498 0.00498 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00498 0.00498 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00496 0.00496 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00495 0.00495 % 06/15/16 16:15 P EPA 7000B (1) Lead <0.00491 0.00491 % 06/15/16 16:15 P EPA 7000B (1) Lead 0.00522 0.00488 % 06/15/16 16:15 P EPA 7000B (1) Authorized Signature: Cherry Rossen, Technical Manager Note: Sample results have not been corrected for blank values. This report applies only to the standards or procedures indicated and to the specific samples tested. It is not indicative of the qualities of apparently identical or similar products or procedures, nor does it represent an ongoing assurance program unless so noted. These reports are for the exclusive use of the client and are not to be reproduced without specific written permission. QuanTEM is not responsible for user-supplied data used in calculations. Unless otherwise noted, upon receipt the condition of the sample was acceptable for analysis. Wipe materials must meet ASTM E1792 criteria. Method detection limits and resultant reporting limits may not be valid for non-astm E1792 wipe material. EPA Method 7000B (1) = EPA 600/R-93/200 Preparation Modified. EPA 7000B Analysis Modified EPA Method 7082 (2) = EPA 600/R-93/200 Preparation Modified. EPA 7082 Analysis Modified Page 1 of 1

Supplemental Report QAQC Results QA ID: 14232 Date: 6/15/2016 Lab Number: 264975 Test: Lead Matrix: Paint Approved By: Cherry Rossen Date Approved: 6/15/2016 Notes: Blank Data: Type of Blank Blank Value FCB ICB Matrix Blank 0 0 0 Standards Data: Standard Low Limit Obtained High Limit CCV FCV ICV 4.5 4.6218 5.5 4.5 4.6198 5.5 0.9 1 1.1 Duplicate Data: Recovery Data: Sample Number Result Spike Level Result + Spike % Recovery Dup. Result + % Dup. Spike Recovery % Spike RPD 264975-002 LCS-P3 0.000 2.000 1.664 83.2 0.000 1.991 1.819 91.3 1.916 96.2 5.2 Page 1 of 1 Authorized Signature: Cherry Rossen, Technical Manager

Appendix 3 Sample Location Figure

Applied Arts Sample Locations Survey Date: 6/13/2016 PROJECT NO.: Contra Costa Community College San Pablo, California R1167404 Not to Scale N Figure 1

Appendix 4 Inspector Certificates