LBP For Buchanan PR-Redacted.pdf

ZIMMETRY ENVIRONMENTAL MANAGEMENT CORP.

Lead Based Paint Inspection

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

TABLE OF CONTENT

SECTION 1: EXECUTIVE SUMMARY

1.1 Introduction

1.2 Summary of Property Evaluation

1.3 Property Locations of Building Components with Lead Based Paint

Table 1-1 Summary of Building Components with Lead Based Paint

SECTION 2: LEAD-BASED PAINT INSPECTION REPORT

2.1 Overview of the Evaluation

2.2 Sampling Procedure

2.3 Results Presentation

2.3.1 Specific Findings

2.3.2 Homogeneous Areas with Special Considerations

2.3.3 Inaccessible Areas Presumed to be Lead-Based Painted

2.4 Lead Regulatory Levels

2.5 Conditions and Limitations

2.6 Abatement Conditions

2.7 Recommendations

2.8 Environmental Assessment Report Certification

SECTION 3: APPENDICES

Appendix A: Certifications, Licenses, and Accreditations

Appendix B: XRF Sampling Data

Appendix C:

Appendix D: Photographic Record

Appendix E: Location of Positive Materials

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

SECTION 1: EXECUTIVE SUMMARY

1.1 INTRODUCTION

A Lead-Based Paint inspection was conducted on May 29, 2023 at Commissary located at Fort Buchanan in Guaynabo, Puerto Rico. The lead-based paint inspection was performed to identify paint that contains lead above allowable levels and to assist with the compliance of local, state and federal regulations.

1.2 SUMMARY OF PROPERTY EVALUATION

The project consisted of the evaluation of the interior and exterior areas of the aforementioned project. The evaluation found that lead based paint was present in selective components and surfaces through the project on the date of the inspection. Table 1-1 identifies the components positive for lead. Table 2-1 identifies lead-based paint as defined by the U.S. Environmental Protection Agency (EPA) and the Department of Natural and Environmental Resources (DRNA) of Puerto Rico. For specific locations and additional detail on the location of lead- reference Sections 2 and 3.

1.3 PROPERTY LOCATIONS OF BUILDING COMPONENTS WITH LEAD-

BASED PAINT

Table 1-1 summarizes the site components and surfaces coated with lead-based paint.

Details that identify positive lead-based paint findings within specific areas and on surfaces were provided in the lead-based paint inspection repor component material directly beneath the painted surface. Photographic documentation is for reference purposes and doesn't necessarily include all the surfaces with lead based paint and/or components containing lead. The quantification of positives materials presented in this table is only an estimate. If an abatement of the materials will be conducted, the Contractors shall estimate the amount of materials to be abated.

If homogeneous materials that were not accounted for are identified in areas that are not describe in this report or inaccessible areas described in Section 2.3.3, they shall be managed as containing lead. If suspected components that could contain lead are encountered underneath current installed tiles or other construction material, they shall be managed as containing lead until the appropriate test is performed. Refer to Appendix E: Location of Positive Materials for specific location.

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

SECTION 2: LEAD-BASED PAINT INSPECTION REPORT

2.1 OVERVIEW OF THE EVALUATION

This lead-based paint inspection is an investigation to identify all lead-based paint on a surface-by-surface basis. A lead-based paint inspection conforming to HUD guidelines was performed at the aforementioned project.

Averages of 512 samples were taken at identified surfaces of the evaluated areas using X-ray fluorescence (XRF) analyzer. The evaluation found that lead-based paint was present in selective components and surfaces through the project on the date of the assessment (See Table 1-1).

Some of the remaining XRF test locations exhibited lead-in-paint levels below the level that EPA identifies as lead-based paint, namely 1.0 mg/cm2. Such surfaces could create dust-lead or soil-lead hazards if the paint is turned into dust by abrasion, scraping, or sanding. Should these or any lead containing components or surfaces be disturbed in any manner that generates dust, care should be taken to limit its spread.

Testing was performed by Dilia Rosado, state-certified risk assessor LBPRA-20322-195, using the Niton XLp-300A XRF, SN-101222. The credentials are provided in Section 3, Appendix A: Certifications, Licenses, and Accreditations. The XRF analyzer is designed to measure the lead content of surface coatings on a variety of building surfaces, substrates, and components. The measurement is rapid and nondestructive and, according to the manufacturer, is capable of detecting lead concentrations that occur within numerous layers of various surface coatings.

Please refer to the XRF Testing Results Section 3, Appendix B: XRF Sampling Data for the detailed analytical testing results for each distinct area inspected. The reports provide a complete testing data.

2.2 SAMPLING PROCEDURE

The Lead Based Paint Sampling Procedure was design to evaluate and document all the data obtained form the inspection in a sequential method that provided confidence at the moment of the results presentation.

The survey was performed following the methodology established in the HUD Guidelines for the Evaluation and Control of Lead Based Paint in Housing (2012 revision) and the Department of Natural and Environmental Resources (DRNA) of Puerto Rico Regulation 9098: Regulation for Proper Management of Lead-Based Paint Activities. The surfaces evaluation was performed as follows:

If the lead concentration measured by the XRF Spectrum Analyzer is less than 1.0 mg/cm2 it is considered negative.

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

If the lead concentration measured by the XRF Spectrum Analyzer is equal or greater than 1.0 mg/cm2 it is considered positive.

To each functional space of the project a name was assigned according to the use of that space. If no name could be assigned then a code letter or number was assigned.

Each wall surface was named with letters beginning with wall A the wall facing the main entrance direction. The wall at your left will be wall B, the wall at front wall C and the wall at you right will be wall D.

2.3 RESULTS PRESENTATION

This section describes the project components and surfaces coated with lead-based paint (LBP), which were observed in the inspection. Please note that the recommendations given are always the minimum action, which in our professional judgment should be taken.

According to the DRNA lead regulations, prior to the demolishing of a structure containing lead-based paint, the contaminated surfaces or substrates must be abated or removed. The firm providing the abatement services must be certified as an abatement firm by the DRNA.

2.3.1 SPECIFIC FINDINGS

The following LBP were found to contain more than 1.0 mg/cm2 for what Department of Natural and Environmental Resources (DRNA) of Puerto Rico identifies as lead-based paint or materials containing lead:

Bollards Guards Curbs Guard Systems Foot Guards Railing

2.3.2 HOMOGENEOUS AREAS WITH SPECIAL CONSIDERATIONS

NONE

2.3.3 INACCESSIBLE AREAS PRESUMED TO BE LEAD-BASED PAINTED

NONE

Commissary at Fort Buchanan Guaynabo, Puerto Rico permanent enclosure of lead-based paint with construction materials mechanically-fastened to the substrate encapsulation of lead-based paint with specially designed encapsulant products removal or permanent covering (concrete or asphalt) of soil-lead-based paint hazards

If enclosure or encapsulation is conducted as an abatement method, the lead-based paint remains on the property, so ongoing lead-based paint maintenance is required.

2.7 RECOMMENDATIONS

According to the DRNA lead regulations, prior to the demolishing of a structure containing lead-based paint, the contaminated surfaces or substrates must be abated or removed. The waste generated has to be characterized to determine if the waste generated is hazardous or non-hazardous waste. The firm providing the abatement services must be certified as an abatement firm by the DRNA. Workers conducting abatement must be trained and certified as abatement workers by a training provider accredited by the DRNA.

2.8 ENVIRONMENTAL ASSESSMENT REPORT CERTIFICATION

Zimmetry Environmental Management Corp. has performed this lead-based paint inspection in a thorough and professional manner consistent with commonly accepted industry standards. The inspection was conducted on May 29, 2023 by Dilia Rosado, state-certified risk assessor LBPRA-20322-195, qualified by experience, education and training in the recognition of lead-based paint and approved sampling techniques using the Niton XLp-

300A XRF, SN-101222.

Dilia Rosado, MEM Environmental Risk Assessor

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

SECTION 3: APPENDICES

Appendix A: Certifications, Licenses, and Accreditations

Appendix B: XRF Sampling Data

Appendix C: Performance Characteristics Sheet

Appendix D: Photographic Record

Appendix E: Location of Positive Materials

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

APPENDIX A: CERTIFICATIONS, LICENSES, AND ACCREDITATIONS

Commissary at Fort Buchanan Guaynabo, Puerto Rico Project No. ZEM-23147

APPENDIX B: XRF SAMPLING DATA

PROJECT:

DATE: 5/29/2023

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

1 Calibration 1.00 2 Calibration 1.00 3 Calibration 1.00 4 Warehouse-1 Areas Wall A White Concrete 0.02 Negative 5 Warehouse-1 Areas Wall A Green Concrete 0.01 Negative 6 Warehouse-1 Areas Floor Line Yellow Concrete 0.00 Negative 7 Warehouse-1 Areas Ceiling White Metal 0.00 Negative 8 Warehouse-1 Areas Beam White Metal 0.01 Negative 9 Warehouse-1 Areas Rack Green Metal 0.01 Negative

10 Warehouse-1 Areas Door White Metal 0.00 Negative 11 Warehouse-1 Areas Door Frame White Metal 0.00 Negative 12 Warehouse-1 Areas Rack Orange Metal 0.00 Negative 13 Warehouse-1 Areas Wall B White Concrete 0.01 Negative 14 Warehouse-1 Areas Wall A White Concrete 0.01 Negative 15 Warehouse-1 Areas Wall A Green Concrete 0.01 Negative 16 Warehouse-1 Areas Floor Line Yellow Concrete 0.00 Negative 17 Warehouse-1 Areas Ceiling White Metal 0.00 Negative 18 Warehouse-1 Areas Beam White Metal 0.00 Negative 19 Warehouse-1 Areas Rack Green Metal 0.03 Negative 20 Warehouse-1 Areas Door White Metal 0.00 Negative 21 Warehouse-1 Areas Door Frame White Metal 0.00 Negative 22 Warehouse-1 Areas Rack Orange Metal 0.00 Negative 23 Warehouse-1 Areas Wall B White Concrete 0.00 Negative 24 Warehouse-1 Areas Wall A White Concrete 0.01 Negative 25 Warehouse-1 Areas Wall A Green Concrete 0.00 Negative 26 Warehouse-1 Areas Floor Line Yellow Concrete 0.01 Negative 27 Warehouse-1 Areas Ceiling White Metal 0.00 Negative 28 Warehouse-1 Areas Beam White Metal 0.00 Negative 29 Warehouse-1 Areas Rack Green Metal 0.00 Negative 30 Warehouse-1 Areas Door White Metal 0.01 Negative 31 Warehouse-1 Areas Door Frame White Metal 0.00 Negative 32 Warehouse-1 Areas Rack Orange Metal 0.01 Negative 33 Warehouse-1 Areas Wall B White Concrete 0.00 Negative 34 Warehouse-1 Areas Pipeline White Metal 0.00 Negative 35 Warehouse-1 Areas Wall B Green Concrete 0.00 Negative 36 Warehouse-1 Areas Diagonal Yellow Metal 0.01 Negative 37 Warehouse-1 Areas Door Cream Metal 0.02 Negative 38 Warehouse-1 Areas Door Frame Cream Metal 0.00 Negative 39 Warehouse-1 Areas Bollard Yellow Metal 0.00 Negative 40 Warehouse-1 Areas Wall C Yellow Concrete 0.00 Negative 41 Warehouse-1 Areas Wall C Green Concrete 0.00 Negative 42 Warehouse-1 Areas Bollard Yellow Metal 0.00 Negative 43 Warehouse-1 Areas Door Cream Metal 0.03 Negative 44 Warehouse-1 Areas Door Frame Cream Metal 0.00 Negative 45 Warehouse-1 Areas Door White Metal 0.00 Negative 46 Warehouse-1 Areas Door Frame White Metal 0.00 Negative 47 Warehouse-1 Areas Wall D White Wood 0.00 Negative 48 Warehouse-1 Areas Wall A White Plastic 0.00 Negative 49 Warehouse-1 Areas Wall B White Plastic 0.00 Negative 50 Warehouse-1 Areas Wall C White Plastic 0.00 Negative 51 Warehouse-1 Areas Wall D White Plastic 0.00 Negative 52 Freezer-1 Areas Door White Metal 0.00 Negative 53 Freezer-1 Areas Door Frame White Metal 0.00 Negative 54 Freezer-1 Areas Ceiling White Plastic 0.00 Negative 55 Warehouse-2 Areas Wall A White Concrete 0.00 Negative 56 Warehouse-2 Areas Wall A Green Concrete 0.01 Negative 57 Warehouse-2 Areas Door White Metal 0.00 Negative 58 Warehouse-2 Areas Door Frame White Metal 0.01 Negative 59 Warehouse-2 Areas Ceiling White Metal 0.00 Negative 60 Warehouse-2 Areas Beam White Metal 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

LBP Inspector: Dilia Rosado

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

61 Warehouse-2 Areas Door Cream Metal 0.00 Negative 62 Warehouse-2 Areas Door Frame Cream Metal 0.00 Negative 63 Warehouse-2 Areas Floor Line Yellow Concrete 0.02 Negative 64 Warehouse-2 Areas Bollard Yellow Metal 0.02 Negative 65 Warehouse-2 Areas Wall B White Wood 0.00 Negative 66 Warehouse-2 Areas Rack Green Metal 0.00 Negative 67 Warehouse-2 Areas Rack Orange Metal 0.01 Negative 68 Warehouse-2 Areas Guard Orange Metal 0.01 Negative 69 Warehouse-2 Areas Wall C White Concrete 0.00 Negative 70 Warehouse-2 Areas Column White Metal 0.00 Negative 71 Warehouse-2 Areas Door Cream Metal 0.00 Negative 72 Warehouse-2 Areas Door Frame Cream Metal 0.00 Negative 73 Warehouse-2 Areas Diagonal Yellow Concrete 0.00 Negative 74 Warehouse-2 Areas Bollard Yellow Metal 0.00 Negative 75 Warehouse-2 Areas Floor Gray Concrete 0.00 Negative 76 Warehouse-2 Areas Column White Metal 0.00 Negative 77 Warehouse-2 Areas Grille White Metal 0.00 Negative 78 Warehouse-2 Areas Switch Panel Gray Metal 0.00 Negative 79 Warehouse-2 Areas Wall D Green Concrete 0.01 Negative 80 Warehouse-2 Areas Wall D White Concrete 0.01 Negative 81 Warehouse-2 Areas Bollard Yellow Metal 0.02 Negative 82 Warehouse-2 Areas Door Cream Metal 0.00 Negative 83 Warehouse-2 Areas Door Frame Cream Metal 0.00 Negative 84 Stagging & Receiving Office Door White Metal 0.00 Negative 85 Stagging & Receiving Office Door Frame White Metal 0.00 Negative 86 Stagging & Receiving Office Window Casing White Metal 0.00 Negative 87 Stagging & Receiving Office Wall A White Drywall 0.00 Negative 88 Stagging & Receiving Office Wall D White Drywall 0.00 Negative 89 Stagging & Receiving Office Wall B Blue Drywall 0.00 Negative 90 Stagging & Receiving Office Wall C Blue Drywall 0.00 Negative 91 Warehouse-2 Areas Wall D White Concrete 0.00 Negative 92 Warehouse-2 Areas Wall D Green Concrete 0.00 Negative 93 Warehouse-2 Areas Floor Line Yellow Concrete 0.00 Negative 94 Warehouse-2 Areas Pipeline White Metal 0.01 Negative 95 Warehouse-2 Areas Ramp Black Metal 0.00 Negative 96 Warehouse-2 Areas Rolling Door Gray Metal 0.00 Negative 97 Warehouse-2 Areas Bollard Yellow Metal 0.00 Negative 98 Warehouse-2 Areas Floor Line Yellow Concrete 0.00 Negative 99 Warehouse-2 Areas Fire System Red Metal 0.02 Negative

100 Warehouse-2 Areas Pipeline Red Metal 0.02 Negative 101 Warehouse-2 Areas Foot Guard Yellow Metal 0.00 Negative 102 Warehouse-2 Areas Column Green Drywall 0.00 Negative 103 Warehouse-2 Areas Door White Metal 0.00 Negative 104 Freezer-2 Areas Wall A White Plastic 0.00 Negative 105 Freezer-2 Areas Wall B White Plastic 0.00 Negative 106 Freezer-2 Areas Wall C White Plastic 0.00 Negative 107 Freezer-2 Areas Wall D White Plastic 0.00 Negative 108 Freezer-2 Areas Ceiling White Plastic 0.00 Negative 109 Freezer-2 Areas Bollard Yellow Metal 0.02 Negative 110 Freezer-2 Areas Door White Metal 0.00 Negative 111 Freezer-2 Areas Rolling Door Gray Metal 0.00 Negative 112 Freezer-2 Areas Foot Guard Yellow Metal 0.02 Negative 113 Warehouse-2 Areas Column White Metal 0.01 Negative 114 Warehouse-2 Areas Column Yellow Metal 0.00 Negative 115 Warehouse-2 Areas Wall A White Concrete 0.00 Negative 116 Warehouse-2 Areas Ceiling White Metal 0.00 Negative 117 Warehouse-2 Areas Beam White Metal 0.00 Negative 118 Warehouse-2 Areas Floor Line Yellow Concrete 0.02 Negative 119 Warehouse-2 Areas Electric Panel Green Metal 0.00 Negative 120 Warehouse-2 Areas Bollard Yellow Metal 0.02 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

121 Warehouse-2 Areas Door Frame White Metal 0.00 Negative 122 Warehouse-2 Areas Guard Yellow Metal 1.20 Positive 123 Warehouse-2 Areas Foot Guard Yellow Metal 0.01 Negative 124 CAO Office Areas Door White Metal 0.02 Negative 125 CAO Office Areas Door Frame White Metal 0.00 Negative 126 CAO Office Areas Wall A White Drywall 0.00 Negative 127 CAO Office Areas Wall C White Drywall 0.00 Negative 128 CAO Office Areas Wall B Pink Drywall 0.00 Negative 129 CAO Office Areas Wall D Pink Drywall 0.00 Negative 130 CAO Office Areas Ceiling White Drywall 0.00 Negative 131 Freezer-3 Areas Wall A White Plastic 0.00 Negative 132 Freezer-3 Areas Wall B White Plastic 0.00 Negative 133 Freezer-3 Areas Wall C White Plastic 0.00 Negative 134 Freezer-3 Areas Wall D White Plastic 0.00 Negative 135 Freezer-3 Areas Bollard Yellow Metal 0.01 Negative 136 Freezer-3 Areas Ceiling White Plastic 0.00 Negative 137 Freezer-3 Areas Door White Metal 0.02 Negative 138 Freezer-4 Areas Wall A White Plastic 0.00 Negative 139 Freezer-4 Areas Wall B White Plastic 0.00 Negative 140 Freezer-4 Areas Wall C White Plastic 0.00 Negative 141 Freezer-4 Areas Wall D White Plastic 0.00 Negative 142 Freezer-4 Areas Ceiling White Plastic 0.00 Negative 143 Freezer-4 Areas Door White Metal 0.00 Negative 144 Warehouse-3 Areas Foot Guard Yellow Metal 2.30 Positive 145 Warehouse-3 Areas Wall B White Concrete 0.00 Negative 146 Warehouse-3 Areas Wall B Green Concrete 0.00 Negative 147 Warehouse-3 Areas Door White Metal 0.00 Negative 148 Warehouse-3 Areas Wall C White Drywall 0.00 Negative 149 Warehouse-3 Areas Beam White Metal 0.00 Negative 150 Warehouse-3 Areas Column White Drywall 0.00 Negative 151 Warehouse-3 Areas Rolling Door Gray Metal 0.00 Negative 152 Warehouse-3 Areas Bollard Yellow Metal 0.01 Negative 153 Warehouse-3 Areas Door Frame White Metal 0.00 Negative 154 Warehouse-3 Areas Door Cream Wood 0.00 Negative 155 Warehouse-3 Areas Wall D Green Concrete 0.03 Negative 156 Warehouse-3 Areas Wall D White Concrete 0.00 Negative 157 Warehouse-3 Areas Door Cream Metal 0.00 Negative 158 Warehouse-3 Areas Door Frame Cream Metal 0.00 Negative 159 Warehouse-3 Areas Fire System Red Metal 0.00 Negative 160 Warehouse-3 Areas Ceiling White Metal 0.00 Negative 161 Warehouse-3 Areas Rolling Door White Metal 0.00 Negative 162 Warehouse-3 Areas Ramp Black Metal 0.00 Negative 163 Warehouse-3 Areas Bollard Red Metal 0.00 Negative 164 Warehouse-3 Areas Guard Yellow Metal 0.03 Negative 165 Warehouse-3 Areas Wall A Green Concrete 0.00 Negative 166 Warehouse-3 Areas Wall A White Concrete 0.00 Negative 167 Warehouse-3 Areas Door Frame White Metal 0.00 Negative 168 Warehouse-3 Areas Rolling Door White Metal 0.00 Negative 169 Warehouse-3 Areas Door Cream Metal 0.00 Negative 170 Warehouse-3, Breakroom Areas Door Cream Metal 0.01 Negative 171 Warehouse-3, Breakroom Areas Door Frame Cream Metal 0.00 Negative 172 Warehouse-3, Breakroom Areas Wall A Orange Drywall 0.00 Negative 173 Warehouse-3, Breakroom Areas Wall B Orange Drywall 0.00 Negative 174 Warehouse-3, Breakroom Areas Wall C Orange Drywall 0.00 Negative 175 Warehouse-3, Breakroom Areas Wall D Orange Drywall 0.00 Negative 176 Warehouse-3, Women Bathroom Wall Tile White Ceramic 0.00 Negative 177 Warehouse-3, Women Bathroom Wall Tile Blue Ceramic 0.00 Negative 178 Warehouse-3, Women Bathroom Floor Tile Cream Ceramic 0.00 Negative 179 Warehouse-3, Women Bathroom Door Cream Metal 0.00 Negative 180 Warehouse-3, Women Bathroom Door Frame Cream Metal 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

181 Warehouse-3, Women Bathroom Locker Cream Metal 0.00 Negative 182 Warehouse-3, Women Bathroom Lavatory White Ceramic 0.00 Negative 183 Warehouse-3, Women Bathroom Toilet White Ceramic 0.00 Negative 184 Warehouse-3, Women Bathroom Partition Cream Wood 0.00 Negative 185 Warehouse-3, Men Bathroom Door Cream Metal 0.00 Negative 186 Warehouse-3, Men Bathroom Door Frame Cream Metal 0.00 Negative 187 Warehouse-3, Men Bathroom Wall Tile White Ceramic 0.00 Negative 188 Warehouse-3, Men Bathroom Wall Tile Blue Ceramic 0.00 Negative 189 Warehouse-3, Men Bathroom Floor Tile Cream Ceramic 0.00 Negative 190 Warehouse-3, Men Bathroom Toilet White Ceramic 0.02 Negative 191 Warehouse-3, Men Bathroom Lavatory White Ceramic 0.01 Negative 192 Warehouse-3, Men Bathroom Locker Cream Metal 0.00 Negative 193 Meat Freezer-1 Areas Door White Metal 0.00 Negative 194 Meat Freezer-1 Areas Bollard Yellow Metal 0.01 Negative 195 Meat Freezer-1 Areas Wall A White Plastic 0.00 Negative 196 Meat Freezer-1 Areas Wall B White Plastic 0.00 Negative 197 Meat Freezer-1 Areas Wall C White Plastic 0.00 Negative 198 Meat Freezer-1 Areas Wall D White Plastic 0.00 Negative 199 Meat Freezer-2 Areas Door Frame White Metal 0.00 Negative 200 Meat Freezer-2 Areas Door Cream Metal 0.00 Negative 201 Meat Freezer-2 Areas Floor Red Concrete 0.01 Negative 202 Meat Freezer-2 Areas Wall A White Plastic 0.00 Negative 203 Meat Freezer-2 Areas Wall B White Plastic 0.00 Negative 204 Meat Freezer-2 Areas Wall C White Plastic 0.00 Negative 205 Meat Freezer-2 Areas Wall D White Plastic 0.00 Negative 206 Meat Freezer-3 Areas Wall A White Plastic 0.00 Negative 207 Meat Freezer-3 Areas Wall B White Plastic 0.00 Negative 208 Meat Freezer-3 Areas Wall C White Plastic 0.00 Negative 209 Meat Freezer-3 Areas Wall D White Plastic 0.00 Negative 210 Meat Freezer-3 Areas Floor Red Concrete 0.02 Negative 211 Meat Storage Areas Wall A Cream Drywall 0.00 Negative 212 Meat Storage Areas Wall B Cream Drywall 0.00 Negative 213 Meat Storage Areas Wall C Cream Drywall 0.00 Negative 214 Meat Storage Areas Wall D Cream Drywall 0.00 Negative 215 Meat Storage Areas Bollard Yellow Metal 0.01 Negative 216 Meat Storage Areas Floor Red Concrete 0.01 Negative 217 Meat Storage Areas Switch Panel Gray Metal 0.00 Negative 218 Meat Storage Areas Ceiling White Drywall 0.00 Negative 219 Meat Manager Office Areas Wall A White Drywall 0.00 Negative 220 Meat Manager Office Areas Wall B White Drywall 0.00 Negative 221 Meat Manager Office Areas Wall C White Drywall 0.02 Negative 222 Meat Manager Office Areas Wall D White Drywall 0.00 Negative 223 Meat Manager Office Areas Door White Metal 0.00 Negative 224 Meat Manager Office Areas Door Frame White Metal 0.00 Negative 225 Meat Manager Office Areas Ceiling White Drywall 0.00 Negative 226 Vegetable Freezer-1 Areas Wall A White Plastic 0.00 Negative 227 Vegetable Freezer-1 Areas Wall B White Plastic 0.00 Negative 228 Vegetable Freezer-1 Areas Wall C White Plastic 0.00 Negative 229 Vegetable Freezer-1 Areas Wall D White Plastic 0.00 Negative 230 Vegetable Freezer-1 Areas Bollard Yellow Metal 0.02 Negative 231 Vegetable Freezer-1 Areas Door Frame White Metal 0.00 Negative 232 Vegetable Freezer-1 Areas Door Cream Metal 0.00 Negative 233 Vegetable Freezer-2 Areas Wall A White Plastic 0.00 Negative 234 Vegetable Freezer-2 Areas Wall B White Plastic 0.00 Negative 235 Vegetable Freezer-2 Areas Wall C White Plastic 0.00 Negative 236 Vegetable Freezer-2 Areas Wall D White Plastic 0.01 Negative 237 Vegetable Freezer-2 Areas Door Cream Metal 0.00 Negative 238 Vegetable Freezer-2 Areas Door Frame Cream Metal 0.01 Negative 239 Administrative Offices Hallway Door Cream Metal 0.00 Negative 240 Administrative Offices Hallway Door Frame Cream Metal 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

241 Administrative Offices Hallway Wall A Cream Drywall 0.00 Negative 242 Administrative Offices Hallway Wall B Cream Drywall 0.00 Negative 243 Administrative Offices Hallway Wall C Cream Drywall 0.00 Negative 244 Administrative Offices Hallway Wall D Cream Drywall 0.02 Negative 245 Administrative Office-1 Areas Door Cream Metal 0.00 Negative 246 Administrative Office-1 Areas Door Frame Cream Metal 0.00 Negative 247 Administrative Office-1 Areas Wall A Gray Drywall 0.00 Negative 248 Administrative Office-1 Areas Wall B Gray Drywall 0.00 Negative 249 Administrative Office-1 Areas Wall C Gray Drywall 0.00 Negative 250 Administrative Office-1 Areas Wall D Blue Drywall 0.00 Negative 251 Administrative Office-1 Areas Column Gray Drywall 0.00 Negative 252 Administrative Office-1 Areas Door Gray Metal 0.01 Negative 253 Administrative Office-1 Areas Door Frame Gray Metal 0.01 Negative 254 Administrative Office-1 Areas Window Casing White Metal 0.01 Negative 255 Administrative Office-2 Areas Wall A Gray Drywall 0.00 Negative 256 Administrative Office-2 Areas Wall B Gray Drywall 0.00 Negative 257 Administrative Office-2 Areas Wall C Gray Drywall 0.00 Negative 258 Administrative Office-2 Areas Wall D Blue Drywall 0.00 Negative 259 Administrative Office-2 Areas Door Gray Metal 0.01 Negative 260 Administrative Office-2 Areas Door Frame Gray Metal 0.00 Negative 261 Administrative Office-2 Areas Window Casing White Metal 0.00 Negative 262 Administrative Office-3 Areas Wall A Gray Drywall 0.00 Negative 263 Administrative Office-3 Areas Wall B Gray Drywall 0.00 Negative 264 Administrative Office-3 Areas Wall C Gray Drywall 0.00 Negative 265 Administrative Office-3 Areas Wall D Blue Drywall 0.00 Negative 266 Administrative Office-3 Areas Door Cream Metal 0.00 Negative 267 Administrative Office-3 Areas Door Frame Cream Metal 0.00 Negative 268 Administrative Office Breakroom Wall A Gray Drywall 0.00 Negative 269 Administrative Office Breakroom Wall B Gray Drywall 0.02 Negative 270 Administrative Office Breakroom Wall C Gray Drywall 0.00 Negative 271 Administrative Office Breakroom Wall D Blue Drywall 0.00 Negative 272 Administrative Office Breakroom Door Cream Metal 0.00 Negative 273 Administrative Office Breakroom Door Frame Cream Metal 0.00 Negative 274 Freezer Hallway Wall A Gray Drywall 0.00 Negative 275 Freezer Hallway Wall B Gray Drywall 0.00 Negative 276 Freezer Hallway Wall C Gray Drywall 0.00 Negative 277 Freezer Hallway Wall D Blue Drywall 0.00 Negative 278 Freezer Hallway Door Frame White Metal 0.00 Negative 279 Freezer Hallway Door Cream Metal 0.00 Negative 280 Freezer Hallway Foot Guard Yellow Metal 0.01 Negative 281 Freezer Hallway Foot Guard Yellow Metal 0.01 Negative 282 Freezer Hallway Bollard Yellow Metal 0.02 Negative 283 Freezer Hallway Sink Black Metal 0.01 Negative 284 Freezer Hallway Door Cream Metal 0.00 Negative 285 Freezer Hallway Door Frame Cream Metal 0.00 Negative 286 Product Freezer Areas Wall A White Plastic 0.00 Negative 287 Product Freezer Areas Wall B White Plastic 0.00 Negative 288 Product Freezer Areas Wall C White Plastic 0.00 Negative 289 Product Freezer Areas Wall D White Plastic 0.00 Negative 290 Product Freezer Areas Door White Metal 0.00 Negative 291 Product Freezer Areas Door Frame White Metal 0.00 Negative 292 Product Freezer Areas Bollard Yellow Metal 0.00 Negative 293 Product Freezer Areas Door Frame White Metal 0.01 Negative 294 Product Freezer Areas Door Cream Metal 0.00 Negative 295 Production Manager Office Areas Wall A Blue Drywall 0.00 Negative 296 Production Manager Office Areas Wall B Blue Drywall 0.00 Negative 297 Production Manager Office Areas Wall C Blue Drywall 0.00 Negative 298 Production Manager Office Areas Wall D Blue Drywall 0.00 Negative 299 Production Manager Office Areas Door White Metal 0.00 Negative 300 Production Manager Office Areas Door Frame White Metal 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

301 Calibration 1.00 302 Calibration 1.00 303 Calibration 1.00 304 Storage Product Areas Wall A Gray Drywall 0.00 Negative 305 Storage Product Areas Wall B Gray Drywall 0.00 Negative 306 Storage Product Areas Wall C Gray Drywall 0.00 Negative 307 Storage Product Areas Wall D Blue Drywall 0.01 Negative 308 Storage Product Areas Door Gray Metal 0.00 Negative 309 Storage Product Areas Door Frame Gray Metal 0.00 Negative 310 Cash Cage-1 Areas Wall A Pink Drywall 0.00 Negative 311 Cash Cage-1 Areas Wall B Pink Drywall 0.00 Negative 312 Cash Cage-1 Areas Wall C Pink Drywall 0.00 Negative 313 Cash Cage-1 Areas Wall D Pink Drywall 0.00 Negative 314 Cash Cage-1 Areas Door White Metal 0.00 Negative 315 Cash Cage-1 Areas Door Frame White Metal 0.00 Negative 316 Cash Cage-2 Areas Window Casing White Metal 0.01 Negative 317 Cash Cage-2 Areas Door White Metal 0.00 Negative 318 Cash Cage-2 Areas Door Frame White Metal 0.00 Negative 319 Cash Cage-2 Areas Wall A Blue Drywall 0.00 Negative 320 Cash Cage-2 Areas Wall B Blue Drywall 0.00 Negative 321 Cash Cage-2 Areas Wall C Blue Drywall 0.00 Negative 322 Cash Cage-2 Areas Wall D Blue Drywall 0.00 Negative 323 Entrance-2 Areas Wall A Brown Drywall 0.00 Negative 324 Entrance-2 Areas Wall B Brown Drywall 0.00 Negative 325 Entrance-2 Areas Wall C Brown Drywall 0.00 Negative 326 Entrance-2 Areas Wall D Brown Drywall 0.00 Negative 327 Entrance-2 Areas Door White Metal 0.00 Negative 328 Entrance-2 Areas Door Frame White Metal 0.00 Negative 329 Entrance-2 Areas Door White Metal 0.00 Negative 330 Entrance-2 Areas Door Frame White Metal 0.03 Negative 331 Entrance-5 Areas Wall A Brown Drywall 0.00 Negative 332 Entrance-5 Areas Wall B Brown Drywall 0.00 Negative 333 Entrance-5 Areas Wall C Brown Drywall 0.00 Negative 334 Entrance-5 Areas Wall D Brown Drywall 0.00 Negative 335 Entrance-5 Areas Door White Metal 0.00 Negative 336 Entrance-5 Areas Door Frame White Metal 0.01 Negative 337 Entrance-5 Areas Door White Metal 0.00 Negative 338 Entrance-5 Areas Door Frame White Metal 0.00 Negative 339 Entrance-3 Areas Wall A Brown Drywall 0.00 Negative 340 Entrance-3 Areas Wall B Brown Drywall 0.00 Negative 341 Entrance-3 Areas Wall C Brown Drywall 0.00 Negative 342 Entrance-3 Areas Wall D Brown Drywall 0.00 Negative 343 Entrance-3 Areas Sliding Door White Metal 0.00 Negative 344 Entrance-3 Areas Sliding Door White Metal 0.00 Negative 345 Entrance-3 Areas Ceiling White Drywall 0.00 Negative 346 Entrance-4 Areas Wall A Brown Drywall 0.00 Negative 347 Entrance-4 Areas Wall B Brown Drywall 0.00 Negative 348 Entrance-4 Areas Wall C Brown Drywall 0.00 Negative 349 Entrance-4 Areas Wall D Brown Drywall 0.00 Negative 350 Entrance-4 Areas Sliding Door White Metal 0.00 Negative 351 Entrance-4 Areas Sliding Door White Metal 0.00 Negative 352 Entrance-4 Areas Ceiling White Drywall 0.00 Negative 353 Customer Service Areas Wall A Cream Drywall 0.00 Negative 354 Customer Service Areas Wall B Cream Drywall 0.00 Negative 355 Customer Service Areas Wall C Cream Drywall 0.00 Negative 356 Customer Service Areas Wall D Cream Drywall 0.00 Negative 357 Customer Service Areas Door Frame White Metal 0.00 Negative 358 Bathroom Hallway Wall A Brown Drywall 0.00 Negative 359 Bathroom Hallway Wall B Brown Drywall 0.00 Negative 360 Bathroom Hallway Wall C Brown Drywall 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

361 Bathroom Hallway Wall D Brown Drywall 0.00 Negative 362 Women's Bathroom Door Frame White Metal 0.00 Negative 363 Women's Bathroom Wall Tile Cream Ceramic 0.02 Negative 364 Women's Bathroom Floor Tile Gray Ceramic 0.00 Negative 365 Women's Bathroom Toilet White Ceramic 0.01 Negative 366 Women's Bathroom Lavatory White Ceramic 0.01 Negative 367 Women's Bathroom Wall A White Drywall 0.00 Negative 368 Women's Bathroom Wall B White Drywall 0.00 Negative 369 Women's Bathroom Wall C White Drywall 0.00 Negative 370 Women's Bathroom Wall D White Drywall 0.01 Negative 371 Women's Bathroom Partition Gray Wood 0.00 Negative 372 Men's Bathroom Door Frame White Metal 0.00 Negative 373 Men's Bathroom Wall Tile Cream Ceramic 0.01 Negative 374 Men's Bathroom Floor Tile Gray Ceramic 0.01 Negative 375 Men's Bathroom Toilet White Ceramic 0.00 Negative 376 Men's Bathroom Lavatory White Ceramic 0.00 Negative 377 Men's Bathroom Wall A White Drywall 0.00 Negative 378 Men's Bathroom Wall B White Drywall 0.00 Negative 379 Men's Bathroom Wall C White Drywall 0.01 Negative 380 Men's Bathroom Wall D White Drywall 0.00 Negative 381 Men's Bathroom Partition Gray Wood 0.00 Negative 382 Men's Bathroom Urinal White Ceramic 0.01 Negative 383 Lockers Room Door Frame White Metal 0.00 Negative 384 Lockers Room Wall A Brown Drywall 0.00 Negative 385 Lockers Room Wall B Brown Drywall 0.00 Negative 386 Lockers Room Wall C Brown Drywall 0.00 Negative 387 Lockers Room Wall D Brown Drywall 0.00 Negative 388 Lockers Room Locker Gray Metal 0.00 Negative 389 Breakroom Areas Door Frame White Metal 0.00 Negative 390 Breakroom Areas Wall Tile White Ceramic 0.01 Negative 391 Breakroom Areas Locker Gray Metal 0.00 Negative 392 Janitor Room Door Frame White Metal 0.00 Negative 393 Janitor Room Wall A Brown Drywall 0.00 Negative 394 Janitor Room Wall B Brown Drywall 0.00 Negative 395 Janitor Room Wall C Brown Drywall 0.00 Negative 396 Janitor Room Wall D Brown Drywall 0.00 Negative 397 Janitor Room Baseboard Cream Wood 0.00 Negative 398 Janitor Room Sink Cream Ceramic 0.02 Negative 399 Director Office Wall A White Drywall 0.00 Negative 400 Director Office Wall C White Drywall 0.00 Negative 401 Director Office Wall B Cream Drywall 0.00 Negative 402 Director Office Wall D Cream Drywall 0.01 Negative 403 Director Office Door Frame White Metal 0.00 Negative 404 Deli Areas Wall Tile Yellow Ceramic 0.00 Negative 405 Deli Areas Wall Tile Cream Ceramic 0.00 Negative 406 Deli Areas Floor Red Concrete 0.01 Negative 407 Deli Areas Fascia White Drywall 0.00 Negative 408 Deli Areas Ceiling White Drywall 0.00 Negative 409 Sales Areas Wall B Cream Drywall 0.00 Negative 410 Sales Areas Wall B Brown Drywall 0.00 Negative 411 Sales Areas Fascia Blue Drywall 0.00 Negative 412 Sales Areas Ceiling White Metal 0.01 Negative 413 Sales Areas Beam White Metal 0.03 Negative 414 Sales Areas Pipeline White Metal 0.00 Negative 415 Sales Areas Wall C Cream Drywall 0.00 Negative 416 Sales Areas Wall C Brown Drywall 0.00 Negative 417 Sales Areas Fascia Blue Drywall 0.00 Negative 418 Sales Areas Ceiling White Metal 0.03 Negative 419 Sales Areas Beam White Metal 0.01 Negative 420 Sales Areas Pipeline White Metal 0.00 Negative

LBP Inspector: Dilia Rosado

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

421 Sales Areas Wall D Cream Drywall 0.00 Negative 422 Sales Areas Wall D Brown Drywall 0.00 Negative 423 Sales Areas Fascia Blue Drywall 0.00 Negative 424 Sales Areas Ceiling White Metal 0.01 Negative 425 Sales Areas Beam White Metal 0.00 Negative 426 Sales Areas Pipeline White Metal 0.00 Negative 427 Sales Areas Wall A Cream Drywall 0.00 Negative 428 Sales Areas Wall A Brown Drywall 0.00 Negative 429 Sales Areas Fascia Blue Drywall 0.00 Negative 430 Sales Areas Ceiling White Metal 0.00 Negative 431 Sales Areas Beam White Metal 0.01 Negative 432 Sales Areas Pipeline White Metal 0.00 Negative 433 Sales Areas Fascia Brown Drywall 0.00 Negative 434 Sales Areas Column White Metal 0.00 Negative 435 Sales Areas Fascia Green Drywall 0.00 Negative 436 Sales Areas Fascia Blue Drywall 0.00 Negative 437 Sales Areas A/C Duct White Metal 0.00 Negative 438 Entrance-1 Areas Window Casing White Metal 0.00 Negative 439 Entrance-1 Areas Wall B Blue Drywall 0.00 Negative 440 Entrance-1 Areas Wall D Blue Drywall 0.00 Negative 441 Entrance-1 Areas Wall A White Drywall 0.00 Negative 442 Entrance-1 Areas Wall B White Drywall 0.00 Negative 443 Entrance-1 Areas Wall C White Drywall 0.00 Negative 444 Entrance-1 Areas Wall D White Drywall 0.00 Negative 445 Entrance-1 Areas Door White Metal 0.00 Negative 446 Entrance-1 Areas Door Frame White Metal 0.00 Negative 447 Entrance-1 Areas Beam Cream Metal 0.03 Negative 448 Warehouse-1, Hallway Wall A Cream Drywall 0.00 Negative 449 Warehouse-1, Hallway Wall B Cream Drywall 0.00 Negative 450 Warehouse-1, Hallway Wall C Cream Drywall 0.00 Negative 451 Warehouse-1, Hallway Wall D Cream Drywall 0.00 Negative 452 Warehouse-1, Hallway Door Frame White Metal 0.01 Negative 453 Warehouse-1, Hallway Door Cream Metal 0.01 Negative 454 Warehouse-1, Hallway Foot Guard Yellow Metal 3.00 Positive 455 Exterior Areas Wall A Cream Concrete 0.00 Negative 456 Exterior Areas Beam White Concrete 0.01 Negative 457 Exterior Areas Column Cream Concrete 0.01 Negative 458 Exterior Areas Fascia White Drywall 0.00 Negative 459 Exterior Areas Bollard Cream Concrete 0.00 Negative 460 Exterior Areas Fascia Brown Concrete 0.00 Negative 461 Exterior Areas Door Green Metal 0.01 Negative 462 Exterior Areas Door Frame Green Metal 0.00 Negative 463 Exterior Areas Wall B Cream Concrete 0.01 Negative 464 Exterior Areas Door Green Metal 0.00 Negative 465 Exterior Areas Door Frame Green Metal 0.00 Negative 466 Exterior Areas Wall C Cream Concrete 0.01 Negative 467 Exterior Areas Step Yellow Concrete 0.00 Negative 468 Exterior Areas Raiser Yellow Concrete 0.00 Negative 469 Exterior Areas Lower Wall Yellow Concrete 0.00 Negative 470 Exterior Areas Railing Cream Metal 0.00 Negative 471 Exterior Areas Door Green Metal 0.03 Negative 472 Exterior Areas Door Frame Green Metal 0.00 Negative 473 Exterior Areas Bollard Yellow Concrete 0.01 Negative 474 Exterior Areas Ramp Frame Yellow Metal 0.00 Negative 475 Exterior Areas Generator Base Yellow Concrete 0.00 Negative 476 Exterior Areas Guard System Yellow Metal 1.00 Positive 477 Exterior Areas Bollard Yellow Concrete 0.00 Negative 478 Exterior Areas Curb Yellow Concrete 0.40 Negative 479 Exterior Areas Railing Yellow Metal 0.00 Negative 480 Exterior Areas Overhang Green Metal 0.00 Negative

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Sample ID. Functional Space Location Color Subst. XRF Reading Pos/Neg Comments

481 Exterior Areas Foot Guard Yellow Metal 1.20 Positive 482 Exterior Areas Lower Wall Yellow Concrete 0.00 Negative 483 Exterior Areas Stringer Yellow Concrete 0.00 Negative 484 Exterior Areas Bollard Yellow Concrete 1.20 Positive 485 Exterior Areas Bollard Yellow Concrete 1.20 Positive 486 Exterior Areas Bollard Yellow Concrete 2.80 Positive 487 Exterior Areas Guard Yellow Metal 1.00 Positive 488 Exterior Areas Railing Yellow Metal 1.20 Positive 489 Exterior Areas Curb Yellow Concrete 1.00 Positive 490 Mezzanine Stairs Areas Wall A White Concrete 0.00 Negative 491 Mezzanine Stairs Areas Wall B White Concrete 0.00 Negative 492 Mezzanine Stairs Areas Wall C White Concrete 0.00 Negative 493 Mezzanine Stairs Areas Wall D White Concrete 0.01 Negative 494 Mezzanine Stairs Areas Floor Gray Concrete 0.00 Negative 495 Mezzanine Stairs Areas Railing Gray Metal 0.00 Negative 496 Mezzanine Wall A White Concrete 0.00 Negative 497 Mezzanine Wall B White Concrete 0.00 Negative 498 Mezzanine Wall C White Concrete 0.00 Negative 499 Mezzanine Wall D White Concrete 0.00 Negative 500 Mezzanine Door Cream Metal 0.00 Negative 501 Mezzanine Door Frame Cream Metal 0.02 Negative 502 Mezzanine Column Brown Metal 0.00 Negative 503 Mezzanine Beam Brown Metal 0.01 Negative 504 Mezzanine Switch Panel Gray Metal 0.00 Negative 505 Mezzanine Window Casing Black Metal 0.00 Negative 506 Mezzanine A/C Duct Cream Metal 0.00 Negative 507 Mezzanine Rolling Door White Metal 0.00 Negative 508 Mezzanine Foot Guard Yellow Metal 0.00 Negative 509 Mezzanine Stairs Gray Metal 0.00 Negative 510 Calibration 1.00 511 Calibration 1.00 512 Calibration 1.00

Commissary at Fort Buchanan, Guaynabo PR CLIENT: The Jenkins Group

Commissary at Fort Buchanan Guaynabo, Puerto Rico

APPENDIX C: s PERFORMANCE CHARACTERISTICS

SHEET

Niton XLp 300, 9/24/2004, ed. 1

BACKGROUND INFORMATION

EVALUATION DATA SOURCE AND DATE:

This sheet is supplemental information to be used in conjunction with Chapter 7 of the HUD Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing ("HUD Guidelines"). Performance parameters shown on this sheet are calculated from the EPA/HUD evaluation using archived building components. Testing was conducted in August 2004 on 133 testing combinations. The instruments that were used to perform the testing had new sources; one instrument’s was installed in November 2003 with 40 mCi initial strength, and the other’s was installed June 2004 with 40 mCi initial strength.

OPERATING PARAMETERS:

Performance parameters shown in this sheet are applicable only when properly operating the instrument using the manufacturer's instructions and procedures described in Chapter 7 of the HUD Guidelines.

SUBSTRATE CORRECTION VALUE COMPUTATION:

Substrate correction is not needed for brick, concrete, drywall, metal, plaster or wood when using Lead-in- Paint K+L variable reading time mode, the normal operating mode for these instruments. If substrate correction is desired, refer to Chapter 7 of the HUD Guidelines for guidance on correcting XRF results for substrate bias.

EVALUATING THE QUALITY OF XRF TESTING:

Randomly select ten testing combinations for retesting from each house or from two randomly selected units in multifamily housing. Use the K+L variable time mode readings.

Conduct XRF retesting at the ten testing combinations selected for retesting.

Determine if the XRF testing in the units or house passed or failed the test by applying the steps below.

Compute the Retest Tolerance Limit by the following steps:

Determine XRF results for the original and retest XRF readings. Do not correct the original or retest results for substrate bias. In single-family housing a result is defined as the average of three readings. In multifamily housing, a result is a single reading.

Therefore, there will be ten original and ten retest XRF results for each house or for the two selected units.

Calculate the average of the original XRF result and retest XRF result for each testing combination.

Square the average for each testing combination.

Add the ten squared averages together. Call this quantity C.

Multiply the number C by 0.0072. Call this quantity D.

Add the number 0.032 to D. Call this quantity E.

Take the square root of E. Call this quantity F.

Multiply F by 1.645. The result is the Retest Tolerance Limit.

Compute the average of all ten original XRF results.

Compute the average of all ten re-test XRF results.

Find the absolute difference of the two averages.

Niton XLp 300, 9/24/2004, ed. 1

If the difference is less than the Retest Tolerance Limit, the inspection has passed the retest. If the difference of the overall averages equals or exceeds the Retest Tolerance Limit, this procedure should be repeated with ten new testing combinations. If the difference of the overall averages is equal to or greater than the Retest Tolerance Limit a second time, then the inspection should be considered deficient.

Use of this procedure is estimated to produce a spurious result approximately 1% of the time. That is, results of this procedure will call for further examination when no examination is warranted in approximately 1 out of 100 dwelling units tested.

TESTING TIMES:

For the Lead-in-Paint K+L variable reading time mode, the instrument continues to read until it is moved away from the testing surface, terminated by the user, or the instrument software indicates the reading is complete. The following table provides testing time information for this testing mode. The times have been adjusted for source decay, normalized to the initial source strengths as noted above. Source strength and type of substrate will affect actual testing times. At the time of testing, the instruments had source strengths of 26.6 and 36.6 mCi.

Testing Times Using K+L Reading Mode (Seconds)

All Data Median for laboratory-measured lead levels (mg/cm2)

Substrate 25th

Percentile Median 75th

Percentile Pb < 0.25 0.25 < Pb<1.0 1.0 < Pb

Wood Drywall

4 11 19 11 15 11

Metal 4 12 18 9 12 14

Brick Concrete Plaster

8 16 22 15 18 16

CLASSIFICATION RESULTS:

XRF results are classified as positive if they are greater than or equal to the threshold, and negative if they are less than the threshold.

DOCUMENTATION:

A document titled Methodology for XRF Performance Characteristic Sheets provides an explanation of the statistical methodology used to construct the data in the sheets, and provides empirical results from using the recommended inconclusive ranges or thresholds for specific XRF instruments. For a copy of this document call the National Lead Information Center Clearinghouse at 1-800-424-LEAD.

This XRF Performance Characteristic Sheet was developed by the Midwest Research Institute (MRI) and QuanTech, Inc., under a contract between MRI and the XRF manufacturer. HUD has determined that the information provided here is acceptable when used as guidance in conjunction with Chapter 7, Lead-Based Paint Inspection, of HUD’s Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing.

Commissary at Fort Buchanan Guaynabo, Puerto Rico

APPENDIX E: LOCATION OF POSITIVE MATERIALS