2. LBP Report ZEM-25187 Bldgs 223-224.pdf

Lead-Based Paint Inspection Report

Project:

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo, Puerto Rico

Client:

Fort Buchanan

ZEM-25187

July 2025

Prepared By:

Zimmetry Environmental Management, Corp.

www.zimmetry.com info@zimmetry.com

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 Components Containing Lead

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

Table 2-1: Lead Regulatory Levels

2.5 Conditions and Limitations—Disclaimer

2.6 Abatement Conditions

2.7 Recommendations

2.8 Environmental Assessment Report Certification

Section 3: Appendices

List of Appendices Appendix A: Certifications, Licenses, and Accreditations Appendix B: XRF Sampling Data Appendix C: XRF’s Performance Characteristics Sheet Appendix D: Photographic Record Appendix E: Location of Positive Materials

Lead Based Paint Inspection Project No. ZEM-25187

Section 1: Executive Summary

1.1 Introduction

A Lead-Based Paint inspection was conducted on June 24, 2025, at Buildings #223 & #224 located at USAG Fort Buchanan, in the municipality of Guaynabo, Puerto Rico. The lead-based paint inspection was performed to identify paint that contains lead above allowable levels and to assist with compliance with local, state, and federal regulations.

1.2 Summary of Property Evaluation

The inspection consisted of the evaluation of the interior and exterior areas of the buildings mentioned above. The inspection determined that lead-based paint was present in selective components and surfaces throughout the project on the inspection date. 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 details on the lead location- 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. Additional details identifying positive lead-based paint findings within specific areas and on surfaces are provided in Section 2: Lead-Based Paint Inspection Report. The “substrate” is the building 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 positive 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 not accounted for are identified in areas not described 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 currently 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 locations.

Note:

1. The quantification of positive 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.

2. Lead-based painted concrete lower wall surfaces are up to 3 feet.

Table 1-1: Summary of Components Containing Lead of Building #223

Area Component Color Substrate Approximate Amount

1-2, 1-5, 1-14 Wall Surface (A) White Concrete 360 Ft2

1-3 Wall Surfaces (A & D) White Concrete 248 Ft2

1-4 2Lower Wall Surfaces

(A) White Concrete 27 Ft2

1-11, 1-9 Wall Surface (C) White Concrete 136 Ft2

1-18 Wall Surfaces (A & C) White Concrete 528 Ft2

Exterior Side B

Lower Wall Surface Red

Concrete

40 Ft2

Steps Cream 18 Ln Ft

Stringer Red 10 Ln Ft

Exterior Side C

Upper & Lower Wall Surface Cream / Red

Concrete 1,264 Ft2 Column Orange

Window Molding Red

Exterior Side D

Upper & Lower Wall Surface Cream / White

Concrete 280 Ft2 Window Molding Red

Exterior Side A

Upper & Lower Wall Surface Cream / Red

Concrete 1,264 Ft2 Window Molding Red

Column Orange

Note:

1. The quantification of positive 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.

2. Lead-based painted concrete lower wall surfaces are up to 3 feet.

Table 1-1: Summary of Components Containing Lead of Building #224

Area Component Color Substrate Approximate Amount

Exterior Side A Wall Surface Cream / Red Concrete

1,650 Ft2 Column Cream Concrete

Exterior Side C

Wall Surface Cream / Red Concrete 1,030 Ft2

Column Cream Concrete

Molding Red Concrete 20 Ln Ft

Bollards Yellow Metal 4 Units

1-8, 1-9, 1-13 Wall Surface (A) Cream / White Concrete 100 Ft2

1-12 2Lower Wall Surfaces

(A & C) White Concrete 540 Ft2

1-14, 1-15 & 1-16

2Lower Wall Surface (A) White Concrete 150 Ft2

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 buildings mentioned above.

An average of 423 samples were taken at identified surfaces of the evaluated areas using an X-ray fluorescence (XRF) analyzer. The evaluation found that lead-based paint was present in selective components and surfaces through the buildings on the assessment date (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 Melanie Bermúdez, state-certified lead inspector LBPI-19224-232, and by Karla L. Sotomayor, state-certified lead inspector LBPI-34024-431, both using the Niton XLp- 300A XRF, SN-25492 and the SciAps X550Pb, SN-03578, respectively. 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 various building surfaces, substrates, and components. The measurement is rapid and nondestructive and, according to the manufacturer, can detect lead concentrations within numerous layers of various surface coatings.

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

2.2 Sampling Procedure

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

The survey followed 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 surface-by-surface 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.

• If the lead concentration measured by the XRF Spectrum Analyzer is equal to or greater than

1.0 mg/cm2, it is considered positive.

A name was assigned to each functional space of the buildings based on the use of that space. A code letter or number was assigned if no name could be assigned.

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

2.3 Results Presentation

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

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

2.3.1 Specific Findings

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

• Bollards • Stringer

• Column • Wall Surfaces

• Molding • Window Molding

• Steps

2.3.2 Homogeneous Areas with Special Considerations

NONE

2.3.3 Inaccessible Areas Presumed to be Lead-Based Painted

NONE

2.4 Lead Regulatory Levels

The lead regulatory levels provided below are those used when preparing this lead-based paint evaluation or when evaluating data collected. The EPA regulatory levels are the same as the state regulatory levels provided in the following table.

Table 2-1: Lead Regulatory Levels

EPA/DRNA Levels

Lead-Based Paint

1.0 mg/cm2 or 0.5% by weight (or 5,000 ppm)

2.5 Conditions and Limitations—Disclaimer

Zimmetry Environmental Management Corp. has performed this lead-based paint inspection thoroughly and professionally, consistent with commonly accepted industry standards. The Preparer cannot guarantee and does not warrant that this evaluation has identified all adverse environmental factors and/or conditions affecting those buildings on the evaluation date.

The results reported, and conclusions reached by the Preparer are solely for the Owner's benefit.

The results and opinions in this report, based solely on the conditions found at the buildings on the evaluation date, are valid only on that date. The Preparer assumes no obligation to advise the client of any changes in any actual or potential lead-based paint hazards at those buildings beyond the date of the evaluation.

The lead inspection was performed to ready accessible components and surfaces. If suspected components that could contain lead are encountered underneath currently installed tiles or other construction material, they shall be managed as containing lead until the appropriate test is performed. According to the DRNA in the “Regulation for the Proper Management of Lead-Based Paint Activities” Rule 139 (Section E, Part 17), all lead-based paint reports have a validity period of five (5) years.

2.6 Abatement Conditions

As defined by HUD and the Department of Natural and Environmental Resources (DRNA) of Puerto Rico, abatement means any set of measures designed to permanently eliminate lead-based paint and/or lead-based paint hazards. The people providing these services must be trained under the DRNA licensing/certification requirements. The product manufacturer and/or contractor must warrant abatement methods to last at least 20 years, or these methods must have a design life of at least 20 years.

• onsite or offsite removal of lead-based paint from substrates and components

• replacement of components or fixtures painted with lead-based paint

• 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, before demolishing 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 abatement firm 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 thoroughly and professionally, consistent with commonly accepted industry standards. The inspection was conducted on June 24, 2025, by Melanie Bermúdez, state-certified lead inspector LBPI-19224-232, and by Karla L. Sotomayor, state-certified lead inspector LBPI-34024-431, both qualified by experience, education, and training in the recognition of lead-based paint and approved sampling techniques using the Niton XLp-300A XRF, SN-25492 and the SciAps X550Pb, SN-03578, respectively.

Melanie Bermúdez Encarnación, BSc Environmental Lead Inspector

Karla Liz Sotomayor Reyes, Bsc.

Environmental Lead Inspector

Section 3: Appendices Appendix A: Certifications, Licenses, and Accreditations Appendix B: XRF Sampling Data Appendix C: XRF’s Performance Characteristics Sheet Appendix D: Photographic Record Appendix E: Location of Positive Materials

APPENDIX A

Certifications, Licenses and

Accreditations

APPENDIX B

XRF Sampling Data

PROJECT:

DATE: 6/24/2025

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

1 Calibration 1.00

2 Calibration 1.00

3 Calibration 1.00

4 Area 1-1 Door Blue Metal 0.00 Negative

5 Area 1-1 Door Frame Blue Metal 0.00 Negative

6 Area 1-1 Wall B White Drywall 0.01 Negative

7 Area 1-1 Wall C White Drywall 0.00 Negative

8 Area 1-1 Wall D White Drywall 0.00 Negative

9 Area 1-1 Wall A White Concrete 0.00 Negative

10 Area 1-2 Wall D White Concrete 0.03 Negative

11 Area 1-2 Wall A White Drywall 0.00 Negative

12 Area 1-2 Wall A White Concrete 1.30 Positive

13 Area 1-2 Wall B White Drywall 0.00 Negative

14 Area 1-2 Wall C White Concrete 0.00 Negative

15 Area 1-2 Window Casing Black Metal 0.01 Negative

16 Area 1-2 Door Blue Metal 0.00 Negative

17 Area 1-2 Door Frame Blue Metal 0.00 Negative

18 Area 1-3 Wall A White Concrete 2.20 Positive

19 Area 1-3 Wall B White Drywall 0.00 Negative

20 Area 1-3 Wall C White Drywall 0.00 Negative

21 Area 1-3 Wall D White Concrete 4.40 Positive

22 Area 1-3 Wall D White Concrete 3.90 Positive

23 Area 1-3 Window Casing Black Metal 0.00 Negative

24 Area 1-3 Door Green Metal 0.00 Negative

25 Area 1-3 Door Frame Green Metal 0.00 Negative

26 Area 1-4 Lower Wall A White Concrete 5.40 Positive

27 Area 1-4 Wall B White Drywall 0.00 Negative

28 Area 1-4 Wall C White Drywall 0.00 Negative

29 Area 1-4 Wall D White Drywall 0.02 Negative

30 Area 1-4 Upper Wall A White Concrete 0.00 Negative

31 Area 1-4 Upper Wall A White Concrete 0.02 Negative

32 Area 1-5 Wall A White Concrete 6.60 Positive

33 Area 1-5 Wall B White Drywall 0.00 Negative

34 Area 1-5 Wall C White Drywall 0.00 Negative

35 Area 1-5 Wall D White Drywall 0.03 Negative

36 Area 1-5 Door Varnish Wood 0.00 Negative

37 Area 1-5 Door Frame Varnish Wood 0.00 Negative

38 Area 1-5 Door Gray Metal 0.01 Negative

39 Area 1-5 Door Frame Gray Metal 0.00 Negative

40 Area 1-5 Window Casing Black Metal 0.00 Negative

41 Area 1-6 Wall C White Concrete 0.01 Negative

42 Area 1-6 Wall A White Drywall 0.00 Negative

43 Area 1-6 Wall B White Drywall 0.00 Negative

44 Area 1-6 Wall D White Drywall 0.00 Negative

45 Area 1-6 Door Varnish Wood 0.03 Negative

46 Area 1-6 Door Frame Varnish Wood 0.00 Negative

47 Area 1-6 Door Gray Metal 0.00 Negative

48 Area 1-6 Door Frame Gray Metal 0.00 Negative

49 Area 1-7 Wall A White Drywall 0.00 Negative

50 Area 1-7 Wall B White Drywall 0.02 Negative

51 Area 1-7 Wall C White Drywall 0.00 Negative

52 Area 1-7 Wall D White Drywall 0.00 Negative

53 Area 1-7 Door Varnish Wood 0.00 Negative

54 Area 1-7 Door Frame Varnish Wood 0.02 Negative

55 Area 1-7 Door Gray Metal 0.00 Negative

56 Area 1-7 Door Frame Gray Metal 0.00 Negative

57 Area 1-7 Floor Tile Cream Ceramic 0.01 Negative

58 Area 1-7 Toilet White Ceramic 0.02 Negative

59 Area 1-7 Lavatory White Ceramic 0.02 Negative

60 Area 1-8 Wall A White Drywall 0.00 Negative

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Bldg. #223 LBP Inspector: Melanie Bermúdez

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

61 Area 1-8 Wall B White Drywall 0.00 Negative

62 Area 1-8 Wall C White Drywall 0.00 Negative

63 Area 1-8 Wall D White Drywall 0.03 Negative

64 Area 1-8 Door Varnish Wood 0.00 Negative

65 Area 1-8 Door Frame Varnish Wood 0.00 Negative

66 Area 1-8 Door Gray Metal 0.01 Negative

67 Area 1-8 Door Frame Gray Metal 0.00 Negative

68 Area 1-9 Wall C White Concrete 8.40 Positive

69 Area 1-9 Wall B White Drywall 0.00 Negative

70 Area 1-9 Wall A White Drywall 0.00 Negative

71 Area 1-9 Wall D White Drywall 0.03 Negative

72 Area 1-9 Door Varnish Wood 0.00 Negative

73 Area 1-9 Door Frame Varnish Wood 0.00 Negative

74 Area 1-9 Door Gray Metal 0.02 Negative

75 Area 1-9 Door Frame Gray Metal 0.00 Negative

76 Area 1-9 Window Casing Black Metal 0.00 Negative

77 Area 1-10 Wall A Gray Concrete 0.00 Negative

78 Area 1-10 Wall B Gray Drywall 0.03 Negative

79 Area 1-10 Wall C Gray Drywall 0.00 Negative

80 Area 1-10 Wall D Gray Drywall 0.00 Negative

81 Area 1-10 Door Varnish Wood 0.00 Negative

82 Area 1-10 Door Frame Varnish Wood 0.02 Negative

83 Area 1-10 Door Gray Metal 0.00 Negative

84 Area 1-10 Door Frame Gray Metal 0.00 Negative

85 Area 1-10 Window Casing Black Metal 0.00 Negative

86 Area 1-11 Wall C White Concrete 8.60 Positive

87 Area 1-11 Wall B White Drywall 0.00 Negative

88 Area 1-11 Wall D White Drywall 0.00 Negative

89 Area 1-11 Door Green Metal 0.03 Negative

90 Area 1-11 Door Frame Green Metal 0.00 Negative

91 Area 1-11 Door Transom Green Metal 0.00 Negative

92 Area 1-12 Toilet White Ceramic 0.02 Negative

93 Area 1-12 Lavatory White Ceramic 0.02 Negative

94 Area 1-12 Door Varnish Wood 0.00 Negative

95 Area 1-12 Door Frame Varnish Wood 0.00 Negative

96 Area 1-12 Door Gray Metal 0.00 Negative

97 Area 1-12 Door Frame Gray Metal 0.01 Negative

98 Area 1-12 Floor Tile Cream Ceramic 0.03 Negative

99 Area 1-12 Wall A White Drywall 0.00 Negative

100 Area 1-12 Wall B White Drywall 0.00 Negative

101 Area 1-12 Wall C White Drywall 0.02 Negative

102 Area 1-12 Wall D White Drywall 0.00 Negative

103 Area 1-13 Door Green Metal 0.00 Negative

104 Area 1-13 Door Frame Green Metal 0.01 Negative

105 Area 1-13 Wall A White Drywall 0.00 Negative

106 Area 1-13 Wall C White Drywall 0.00 Negative

107 Area 1-13 Wall D White Drywall 0.00 Negative

108 Area 1-14 Wall A White Concrete 8.90 Positive

109 Area 1-14 Wall B Cream Drywall 0.00 Negative

110 Area 1-14 Wall C Cream Drywall 0.02 Negative

111 Area 1-14 Wall D Cream Drywall 0.00 Negative

112 Area 1-14 Window Casing Black Metal 0.00 Negative

113 Area 1-14 Door Varnish Wood 0.00 Negative

114 Area 1-14 Door Frame Varnish Wood 0.01 Negative

115 Area 1-14 Door Gray Metal 0.00 Negative

116 Area 1-14 Door Frame Gray Metal 0.00 Negative

117 Area 1-15 Wall A White Concrete 0.02 Negative

118 Area 1-15 Panel White Wood 0.00 Negative

119 Area 1-15 Wall B White Drywall 0.00 Negative

120 Area 1-15 Wall C White Drywall 0.00 Negative

LBP Inspector: Melanie BermúdezBldg. #223

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

121 Area 1-15 Wall D White Drywall 0.03 Negative

122 Area 1-15 Door Varnish Wood 0.00 Negative

123 Area 1-15 Door Frame Varnish Wood 0.00 Negative

124 Area 1-15 Door Green Metal 0.00 Negative

125 Area 1-15 Door Frame Green Metal 0.01 Negative

126 Area 1-16 Wall C White Concrete 0.00 Negative

127 Area 1-16 Window Casing Black Metal 0.00 Negative

128 Area 1-16 Wall A White Drywall 0.00 Negative

129 Area 1-16 Wall B White Drywall 0.02 Negative

130 Area 1-16 Wall D White Drywall 0.00 Negative

131 Area 1-16 Door Varnish Wood 0.00 Negative

132 Area 1-16 Door Frame Varnish Wood 0.00 Negative

133 Area 1-16 Door Green Metal 0.01 Negative

134 Area 1-16 Door Frame Green Metal 0.01 Negative

135 Area 1-17 Wall C White Concrete 0.00 Negative

136 Area 1-17 Wall B Cream Drywall 0.00 Negative

137 Area 1-17 Wall C Cream Drywall 0.00 Negative

138 Area 1-17 Wall D Cream Drywall 0.03 Negative

139 Area 1-17 Door Varnish Wood 0.00 Negative

140 Area 1-17 Door Frame Varnish Wood 0.00 Negative

141 Area 1-17 Door Green Metal 0.00 Negative

142 Area 1-17 Door Frame Green Metal 0.03 Negative

143 Area 1-17 Window Casing Black Metal 0.00 Negative

144 Area 1-18 Wall A White Concrete 1.40 Positive

145 Area 1-18 Wall C White Concrete 2.60 Positive

146 Area 1-18 Wall B White Drywall 0.00 Negative

147 Area 1-18 Wall D White Drywall 0.00 Negative

148 Area 1-18 Window Casing Black Metal 0.02 Negative

149 Area 1-19 Wall A Cream Concrete 0.00 Negative

150 Area 1-19 Wall B Cream Concrete 0.00 Negative

151 Area 1-19 Wall C Cream Drywall 0.00 Negative

152 Area 1-19 Wall D Cream Drywall 0.01 Negative

153 Area 1-19 Window Casing Black Metal 0.00 Negative

154 Area 1-19 Door Varnish Wood 0.00 Negative

155 Area 1-19 Door Frame Varnish Wood 0.00 Negative

156 Area 1-19 Door Green Metal 0.02 Negative

157 Area 1-19 Door Frame Green Metal 0.00 Negative

158 Area 1-20 Wall B White Concrete 0.00 Negative

159 Area 1-20 Wall C White Concrete 0.01 Negative

160 Area 1-20 Wall D White Drywall 0.00 Negative

161 Area 1-20 Wall A White Drywall 0.00 Negative

162 Area 1-20 Window Casing Black Metal 0.00 Negative

163 Exterior Area, Side B Upper Wall B Cream Concrete 0.02 Negative

164 Exterior Area, Side B Upper Wall B Cream Concrete 0.50 Negative

165 Exterior Area, Side B Lower Wall B Red Concrete 7.70 Positive

166 Exterior Area, Side B Window Molding Red Concrete 0.00 Negative

167 Exterior Area, Side B Soffit Cream Drywall 0.00 Negative

168 Exterior Area, Side B Door Green Metal 0.01 Negative

169 Exterior Area, Side B Door Frame Green Metal 0.00 Negative

170 Exterior Area, Side B Steps Cream Concrete 2.00 Positive

171 Exterior Area, Side B Overhang Cream Concrete 0.00 Negative

172 Exterior Area, Side B Stringer Red Concrete 1.40 Positive

173 Exterior Area, Side B Fascia Red Drywall 0.00 Negative

174 Exterior Area, Side C Upper Wall C Cream Concrete 3.60 Positive

175 Exterior Area, Side C Lower Wall C Red Concrete 2.80 Positive

176 Exterior Area, Side C Column Orange Concrete 1.50 Positive

177 Exterior Area, Side C Soffit Cream Drywall 0.00 Negative

178 Exterior Area, Side C Window Molding Red Concrete 2.35 Positive

179 Exterior Area, Side C Fascia Red Drywall 0.00 Negative

180 Exterior Area, Side C Base White Concrete 0.00 Negative

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Bldg. #223 LBP Inspector: Melanie Bermúdez

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

181 Exterior Area, Side D Upper Wall D Cream Concrete 1.55 Positive

182 Exterior Area, Side D Lower Wall D White Concrete 1.80 Positive

183 Exterior Area, Side D Window Molding Red Concrete 3.30 Positive

184 Exterior Area, Side A Upper Wall A Cream Concrete 2.30 Positive

185 Exterior Area, Side A Lower Wall A Red Concrete 1.80 Positive

186 Exterior Area, Side A Window Molding Red Concrete 3.20 Positive

187 Exterior Area, Side A Column Orange Concrete 1.60 Positive

188 Exterior Area, Side A Soffit Cream Drywall 0.00 Negative

189 Exterior Area, Side A Fascia Red Drywall 0.00 Negative

Bldg. #223

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

LBP Inspector: Melanie Bermúdez

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

190 Area 1-17 Wall A White Concrete 0.00 Negative

191 Area 1-17 Wall B Cream Concrete 0.00 Negative

192 Area 1-17 Wall C Cream Concrete 0.02 Negative

193 Area 1-17 Wall D Cream Concrete 0.00 Negative

194 Area 1-17 Door Blue Metal 0.00 Negative

195 Area 1-17 Door Frame Blue Metal 0.00 Negative

196 Calibration 1.00

197 Calibration 1.00

198 Calibration 1.00

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Bldg. #224 LBP Inspector: Melanie Bermúdez

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

1 Calibration 1.00

2 Calibration 1.00

3 Calibration 1.00

4 Exterior Area, Side A Wall Cream Concrete 9.30 Positive

5 Exterior Area, Side A Wall Cream Concrete 7.09 Positive

6 Exterior Area, Side A Wall Red Concrete 0.00 Negative

7 Exterior Area, Side A Wall Red Concrete 0.00 Negative

8 Exterior Area, Side A Column Cream Concrete 4.29 Positive

9 Exterior Area, Side A Molding Red Concrete 0.02 Negative

10 Exterior Area, Side A Molding Red Concrete 0.00 Negative

11 Exterior Area, Side A Molding Red Concrete 0.00 Negative

12 Exterior Area, Side A Molding Red Concrete 0.00 Negative

13 Exterior Area, Side A Fascia Red Concrete 0.01 Negative

14 Exterior Area, Side A Fascia Red Concrete 0.00 Negative

15 Exterior Area, Side A Fascia Red Concrete 0.00 Negative

16 Exterior Area, Side A Steps Gray Concrete 0.04 Negative

17 Exterior Area, Side A Riser Gray Concrete 0.10 Negative

18 Exterior Area, Side A Soffit White Concrete 0.00 Negative

19 Exterior Area, Side A Soffit White Concrete 0.00 Negative

20 Exterior Area, Side A Soffit White Concrete 0.00 Negative

21 Exterior Area, Side A Stringer Gray Concrete 0.32 Negative

22 Exterior Area, Side A Pipeline Green Metal 0.00 Negative

23 Exterior Area, Side A Wall Red Concrete 1.08 Positive

24 Exterior Area, Side B Wall Cream Concrete 0.00 Negative

25 Exterior Area, Side B Wall Red Concrete 0.00 Negative

26 Exterior Area, Side B Column Cream Concrete 0.01 Negative

27 Exterior Area, Side B Molding Red Concrete 0.00 Negative

28 Exterior Area, Side B Fascia Red Concrete 0.00 Negative

29 Exterior Area, Side B Beam Green Metal 0.00 Negative

30 Exterior Area, Side B Ramp Gray Concrete 0.02 Negative

31 Exterior Area, Side C Wall Cream Concrete 5.93 Positive

32 Exterior Area, Side C Wall Red Concrete 5.30 Positive

33 Exterior Area, Side C Column Cream Concrete 6.55 Positive

34 Exterior Area, Side C Molding Red Concrete 4.00 Positive

35 Exterior Area, Side C Fascia Red Concrete 0.00 Negative

36 Exterior Area, Side C Molding Red Concrete 4.40 Positive

37 Exterior Area, Side C Wall Cream Concrete 0.00 Negative

38 Exterior Area, Side C Wall Cream Concrete 0.00 Negative

39 Exterior Area, Side C Wall Cream Concrete 0.03 Negative

40 Exterior Area, Side C Wall Cream Concrete 0.00 Negative

41 Exterior Area, Side C Wall Red Concrete 0.00 Negative

42 Exterior Area, Side C Wall Red Concrete 0.01 Negative

43 Exterior Area, Side C Wall Red Concrete 0.00 Negative

44 Exterior Area, Side C Wall Red Concrete 0.00 Negative

45 Exterior Area, Side C Lower Wall Red Concrete 0.00 Negative

46 Exterior Area, Side C Lower Wall Red Concrete 0.03 Negative

47 Exterior Area, Side C Lower Wall Red Concrete 0.00 Negative

48 Exterior Area, Side C Pipeline Green Metal 0.00 Negative

49 Exterior Area, Side C Beam Green Metal 0.00 Negative

50 Exterior Area, Side C Bollard Yellow Metal 0.42 Negative

51 Exterior Area, Side C Bollard Yellow Metal 1.67 Positive

52 Exterior Area, Side C Bollard Yellow Metal 2.00 Positive

53 Exterior Area, Side C Base Yellow Concrete 0.00 Negative

54 Exterior Area, Side C Base Yellow Concrete 0.00 Negative

55 Exterior Area, Side C Molding Red Concrete 0.03 Negative

56 Exterior Area, Side C Wall Cream Concrete 2.46 Positive

57 Exterior Area, Side C Column Cream Concrete 0.00 Negative

58 Exterior Area, Side C Column Cream Concrete 0.17 Negative

59 Exterior Area, Side C Molding Red Concrete 2.30 Positive

60 Area 1-1 Wall A White Drywall 0.00 Negative

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Bldg. #224 LBP Inspector: Karla L. Sotomayor

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

61 Area 1-1 Wall A White Drywall 0.00 Negative

62 Area 1-1 Wall D White Drywall 0.01 Negative

63 Area 1-1 Wall D White Drywall 0.00 Negative

64 Area 1-1 Wall B White Concrete 0.00 Negative

65 Area 1-1 Wall B White Concrete 0.00 Negative

66 Area 1-1 Wall C White Concrete 0.02 Negative

67 Area 1-1 Wall C White Concrete 0.00 Negative

68 Area 1-1 Door Varnish Wood 0.00 Negative

69 Area 1-1 Door Frame Blue Metal 0.00 Negative

70 Area 1-1 Door Blue Metal 0.03 Negative

71 Area 1-1 Door Frame Blue Metal 0.00 Negative

72 Area 1-2 Door Varnish Wood 0.00 Negative

73 Area 1-2 Wall A White Concrete 0.00 Negative

74 Area 1-2 Wall B White Concrete 0.02 Negative

75 Area 1-2 Wall C White Drywall 0.00 Negative

76 Area 1-2 Wall D White Drywall 0.00 Negative

77 Area 1-2 Door Frame Blue Metal 0.00 Negative

78 Area 1-3 Wall A White Concrete 0.01 Negative

79 Area 1-3 Wall B White Drywall 0.00 Negative

80 Area 1-3 Wall C White Drywall 0.00 Negative

81 Area 1-3 Wall D White Drywall 0.00 Negative

82 Area 1-3 Door Varnish Wood 0.01 Negative

83 Area 1-3 Door Frame Blue Metal 0.00 Negative

84 Area 1-4 Wall A White Drywall 0.00 Negative

85 Area 1-4 Wall B White Drywall 0.00 Negative

86 Area 1-4 Wall D White Drywall 0.00 Negative

87 Area 1-4 Wall C White Concrete 0.03 Negative

88 Area 1-4 Door Frame Blue Metal 0.00 Negative

89 Area 1-4 Door Varnish Wood 0.00 Negative

90 Area 1-5 Door Varnish Wood 0.00 Negative

91 Area 1-5 Door Frame Blue Metal 0.02 Negative

92 Area 1-5 Floor Tile Cream Ceramic 0.01 Negative

93 Area 1-5 Wall A Cream Plastic 0.00 Negative

94 Area 1-5 Wall B Cream Plastic 0.00 Negative

95 Area 1-5 Wall C Cream Plastic 0.00 Negative

96 Area 1-5 Wall D Cream Plastic 0.02 Negative

97 Area 1-5 Toilet White Ceramic 0.01 Negative

98 Area 1-5 Lavatory White Ceramic 0.01 Negative

99 Area 1-5 Urinal White Ceramic 0.03 Negative

100 Area 1-6 Door Varnish Wood 0.00 Negative

101 Area 1-6 Door Frame Blue Metal 0.00 Negative

102 Area 1-6 Wall A White Plastic 0.00 Negative

103 Area 1-6 Wall B White Plastic 0.01 Negative

104 Area 1-6 Wall C White Plastic 0.00 Negative

105 Area 1-6 Wall D White Plastic 0.00 Negative

106 Area 1-7 Door Varnish Wood 0.00 Negative

107 Area 1-7 Door Frame Blue Metal 0.03 Negative

108 Area 1-7 Floor Tile Cream Ceramic 0.03 Negative

109 Area 1-7 Wall A Cream Plastic 0.00 Negative

110 Area 1-7 Wall B Cream Plastic 0.00 Negative

111 Area 1-7 Wall C Cream Plastic 0.00 Negative

112 Area 1-7 Wall D Cream Plastic 0.02 Negative

113 Area 1-7 Toilet White Ceramic 0.01 Negative

114 Area 1-7 Lavatory White Ceramic 0.02 Negative

115 Area 1-8 Door Varnish Wood 0.00 Negative

116 Area 1-8 Door Frame Blue Metal 0.00 Negative

117 Area 1-8 Wall A White Concrete 5.30 Positive

118 Area 1-8 Wall C White Concrete 0.02 Negative

119 Area 1-8 Wall B White Drywall 0.00 Negative

120 Area 1-8 Wall D White Drywall 0.00 Negative

LBP Inspector: Karla L. SotomayorBldg. #224

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

121 Area 1-8 Wall D White Concrete 0.00 Negative

122 Area 1-9 Door Varnish Wood 0.01 Negative

123 Area 1-9 Door Frame Blue Metal 0.00 Negative

124 Area 1-9 Wall A Cream Concrete 1.30 Positive

125 Area 1-9 Wall B Cream Drywall 0.00 Negative

126 Area 1-9 Wall D Cream Drywall 0.00 Negative

127 Area 1-9 Wall B Cream Concrete 0.02 Negative

128 Area 1-9 Window Casing Black Metal 0.00 Negative

129 Area 1-9 Wall C Cream Concrete 0.00 Negative

130 Area 1-10 Wall A White Concrete 0.01 Negative

131 Area 1-10 Wall C White Concrete 0.00 Negative

132 Area 1-10 Wall B White Concrete 0.00 Negative

133 Area 1-10 Wall D White Concrete 0.00 Negative

134 Area 1-10 Wall B White Drywall 0.02 Negative

135 Area 1-10 Wall D White Drywall 0.00 Negative

136 Area 1-10 Door Blue Metal 0.00 Negative

137 Area 1-10 Door Blue Metal 0.00 Negative

138 Area 1-10 Door Frame Blue Metal 0.03 Negative

139 Area 1-10 Door Frame Blue Metal 0.00 Negative

140 Area 1-10 Beam White Concrete 0.00 Negative

141 Area 1-11 Wall C White Concrete 0.00 Negative

142 Area 1-11 Wall A White Drywall 0.01 Negative

143 Area 1-11 Wall B White Drywall 0.00 Negative

144 Area 1-11 Wall D White Drywall 0.00 Negative

145 Area 1-11 Shelves White Wood 0.00 Negative

146 Area 1-12 Lower Wall A White Concrete 2.56 Positive

147 Area 1-12 Lower Wall A White Concrete 2.01 Positive

148 Area 1-12 Upper Wall A White Concrete 0.00 Negative

149 Area 1-12 Wall B White Concrete 0.00 Negative

150 Area 1-12 Upper Wall C White Concrete 0.39 Negative

151 Area 1-12 Door White Metal 0.00 Negative

152 Area 1-12 Door Frame White Metal 0.00 Negative

153 Area 1-12 Window Casing Black Metal 0.00 Negative

154 Area 1-12 Window Casing Black Metal 0.03 Negative

155 Area 1-12 Window Casing Black Metal 0.00 Negative

156 Area 1-12 Door Blue Metal 0.00 Negative

157 Area 1-12 Door Frame Blue Metal 0.00 Negative

158 Area 1-12 Wall D White Concrete 0.01 Negative

159 Area 1-12 Lower Wall C White Concrete 4.10 Positive

160 Area 1-12 Lower Wall C White Concrete 3.42 Positive

161 Area 1-12 Lower Wall C White Concrete 3.47 Positive

162 Area 1-12 Lower Wall C White Concrete 0.00 Negative

163 Exterior Area, Side D Wall Cream Concrete 0.00 Negative

164 Exterior Area, Side D Wall Red Concrete 0.00 Negative

165 Exterior Area, Side D Column Cream Concrete 0.02 Negative

166 Exterior Area, Side D Molding Red Concrete 0.00 Negative

167 Exterior Area, Side D Fascia Red Concrete 0.00 Negative

168 Exterior Area, Side D Beam Green Metal 0.00 Negative

169 Area 1-13 Wall A White Drywall 0.01 Negative

170 Area 1-13 Wall A White Concrete 6.30 Positive

171 Area 1-13 Partition White Drywall 0.00 Negative

172 Area 1-13 Partition White Drywall 0.00 Negative

173 Area 1-13 Partition White Drywall 0.02 Negative

174 Area 1-13 Wall D White Concrete 0.00 Negative

175 Area 1-13 Wall C White Concrete 0.00 Negative

176 Area 1-13 Wall B White Drywall 0.00 Negative

177 Area 1-13 Door Varnish Wood 0.01 Negative

178 Area 1-13 Door Varnish Wood 0.00 Negative

179 Area 1-13 Door Varnish Wood 0.00 Negative

180 Area 1-13 Door Varnish Wood 0.00 Negative

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

Bldg. #224 LBP Inspector: Karla L. Sotomayor

Sample ID. Functional Space Location Color Subst.

XRF Reading mg/cm2 Pos/Neg Comments

181 Area 1-13 Door Frame Varnish Wood 0.00 Negative

182 Area 1-13 Door Frame Varnish Wood 0.03 Negative

183 Area 1-13 Door Frame Varnish Wood 0.00 Negative

184 Area 1-13 Door Frame Varnish Wood 0.00 Negative

185 Area 1-13 Window Casing Black Metal 0.00 Negative

186 Area 1-13 Window Casing Black Metal 0.01 Negative

187 Area 1-14 Lower Wall A White Concrete 3.57 Positive

188 Area 1-14 Wall B White Wood 0.00 Negative

189 Area 1-14 Wall D White Wood 0.00 Negative

190 Area 1-14 Wall C White Drywall 0.01 Negative

191 Area 1-14 Wall D White Drywall 0.00 Negative

192 Area 1-14 Electrical Panel Gray Metal 0.00 Negative

193 Area 1-14 Door Varnish Wood 0.00 Negative

194 Area 1-14 Door Frame Blue Metal 0.03 Negative

195 Area 1-14 Beam Red Metal 0.00 Negative

196 Area 1-14 Beam Red Metal 0.00 Negative

197 Area 1-15 Lower Wall A White Concrete 2.08 Positive

198 Area 1-15 Upper Wall A White Concrete 0.00 Negative

199 Area 1-15 Electrical Panel Gray Metal 0.00 Negative

200 Area 1-15 Door Varnish Wood 0.00 Negative

201 Area 1-15 Door Frame Blue Metal 0.02 Negative

202 Area 1-15 Beam Red Metal 0.00 Negative

203 Area 1-15 Beam Red Metal 0.00 Negative

204 Area 1-15 Wall B White Wood 0.00 Negative

205 Area 1-15 Wall B White Drywall 0.01 Negative

206 Area 1-15 Wall C White Drywall 0.00 Negative

207 Area 1-15 Wall D White Drywall 0.00 Negative

208 Area 1-16 Lower Wall A White Concrete 3.30 Positive

209 Area 1-16 Upper Wall A White Concrete 0.00 Negative

210 Area 1-16 Upper Wall A White Concrete 0.00 Negative

211 Area 1-16 Wall B White Drywall 0.03 Negative

212 Area 1-16 Wall C White Drywall 0.00 Negative

213 Area 1-16 Wall D White Drywall 0.00 Negative

214 Area 1-16 Partition White Drywall 0.00 Negative

215 Area 1-16 Door Varnish Wood 0.01 Negative

216 Area 1-16 Door Varnish Wood 0.00 Negative

217 Area 1-16 Door Varnish Wood 0.00 Negative

218 Area 1-16 Door Varnish Wood 0.00 Negative

219 Area 1-16 Door Frame Varnish Wood 0.02 Negative

220 Area 1-16 Door Frame Varnish Wood 0.00 Negative

221 Area 1-16 Door Frame Varnish Wood 0.00 Negative

222 Area 1-16 Door Frame Varnish Wood 0.00 Negative

223 Calibration 1.00

224 Calibration 1.00

225 Calibration 1.00

Bldg. #224

Buildings #223 & #224 Located at USAG Fort Buchanan, Guaynabo PR CLIENT: Fort Buchanan

LBP Inspector: Karla L. Sotomayor

APPENDIX C

XRF Performance Characteristic

Sheet

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

Performance Characteristic Sheet

EFFECTIVE DATE: September 24, 2004 EDITION NO.: 1

MANUFACTURER AND MODEL:

Make: Niton LLC Tested Model: XLp 300 Source: 109Cd Note: This PCS is also applicable to the equivalent model variations indicated below, for the Lead-in-Paint K+L variable reading time mode, in the XLi and XLp series:

XLi 300A, XLi 301A, XLi 302A and XLi 303A.

XLp 300A, XLp 301A, XLp 302A and XLp 303A.

XLi 700A, XLi 701A, XLi 702A and XLi 703A.

XLp 700A, XLp 701A, XLp 702A, and XLp 703A.

Note: The XLi and XLp versions refer to the shape of the handle part of the instrument. The differences in the model numbers reflect other modes available, in addition to Lead-in- Paint modes. The manufacturer states that specifications for these instruments are identical for the source, detector, and detector electronics relative to the Lead-in-Paint mode.

FIELD OPERATION GUIDANCE

OPERATING PARAMETERS:

Lead-in-Paint K+L variable reading time mode.

XRF CALIBRATION CHECK LIMITS:

0.8 to 1.2 mg/cm2 (inclusive)

The calibration of the XRF instrument should be checked using the paint film nearest 1.0 mg/cm2 in the NIST Standard Reference Material (SRM) used (e.g., for NIST SRM 2579, use the 1.02 mg/cm2 film).

If readings are outside the acceptable calibration check range, follow the manufacturer's instructions to bring the instruments into control before XRF testing proceeds.

SUBSTRATE CORRECTION:

For XRF results using Lead-in-Paint K+L variable reading time mode, substrate correction is not needed for:

Brick, Concrete, Drywall, Metal, Plaster, and Wood

INCONCLUSIVE RANGE OR THRESHOLD:

K+L MODE

READING DESCRIPTION

SUBSTRATE THRESHOLD

(mg/cm2)

Results not corrected for substrate bias on any substrate

Brick Concrete Drywall Metal

Plaster Wood

1.0 1.0 1.0 1.0 1.0 1.0

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.

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.

SciAps X-550 PCS February 2022 Action Level: 1.0 mg/cm2

Performance Characteristic Sheet EFFECTIVE DATE: February 1, 2022

MANUFACTURER AND MODEL:

Make: SciAps Models: Model X-550

X-Ray Source: Rhodium (Rh) or Gold (Au) Anode

FIELD OPERATION GUIDANCE

ACTION LEVEL SETTING:

1.0 mg/cm2

OPERATING PARAMETERS:

Timed mode: fixed 10-second reading.

Quick mode: variable-time reading (approximately 2-6 seconds).

XRF CALIBRATION CHECK LIMITS:

0.8 to 1.2 mg/cm2 (inclusive) on NIST SRM 2579 (1.02 mg/cm2)/NIST SRM 2573, or equivalent

SUBSTRATE CORRECTION:

Not applicable

INCONCLUSIVE RANGE OR THRESHOLD:

Au Anode (quick)

READING DESCRIPTION

SUBSTRATE THRESHOLD (mg/cm2)

Results not corrected for substrate bias on any substrate

Brick 1.0 Concrete 1.0 Drywall 1.0 Metal 1.0

Plaster 1.0 Wood 1.0

Rh Anode (Timed or Quick), Au Anode (Timed)

READING DESCRIPTION

SUBSTRATE THRESHOLD (mg/cm2)

Results not corrected for substrate bias on any substrate

Brick 0.9 Concrete 0.9 Drywall 0.9 Metal 0.9

Plaster 0.9 Wood 0.9

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, 2012 Edition ("HUD Guidelines"). Performance parameters shown on this sheet are calculated using test results on building components in the HUD archive.

Testing was conducted on 146 test samples in February 2022, with two separate instruments of each Anode type, operated in both Timed and Quick modes.

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.

XRF CALIBRATION CHECK:

The calibration of the XRF instrument should be checked using the paint film nearest 1.0 mg/cm2 in the NIST Standard Reference Material (SRM) used (e.g., for NIST SRM 2579, use the 1.02 mg/cm2 film; for NIST SRM 2579a, use film 2573 (1.04 mg/cm2).

If the average (rounded to 1 decimal place) of three readings is outside the acceptable calibration check range, follow the manufacturer's instructions to bring the instrument into control before XRF testing proceeds.

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.

Conduct XRF re-testing 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. In single-family and multi-family housing, a result is defined as 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 the 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 readings.

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

Find the absolute difference of the two averages.

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:

The reading time in Archive tests was 10 seconds in Timed mode and from 2-6 seconds in Quick mode, for both the Rh Anode and Au Anode.

CLASSIFICATION OF RESULTS:

XRF results for the Au Anode in Quick mode are classified as positive if they are greater than or equal to 1.0 mg/cm2 and negative if they are less than to 1.0 mg/cm2. XRF results for the Au Anode in Timed mode and for the Rh Anode in Timed or Quick mode are classified as positive if they are greater than or equal to 0.9 mg/cm2 and negative if they are less than to 0.9 mg/cm2

DOCUMENTATION:

A report titled Methodology for XRF Performance Characteristic Sheets (EPA 747-R-95-008) provides an explanation of the statistical methodology used to develop Performance Characteristic Sheets at the Federal standard (Action Level) of 1.0 mg/cm2 and provides empirical results from using the recommended inconclusive ranges or thresholds for specific XRF instruments. The report may be downloaded at http://www2.epa.gov/lead/methodology-xrf-performance-characteristic-sheets-epa-747-r-95-008-september- 1997.

http://www2.epa.gov/lead/methodology-xrf-performance-characteristic-sheets-epa-747-r-95-008-september-1997 http://www2.epa.gov/lead/methodology-xrf-performance-characteristic-sheets-epa-747-r-95-008-september-1997

APPENDIX D

Photographic Record

Photo No.

Date:

06/24/2025

Description:

Bldg. #223, Area 1-2 Lead-based painted concrete wall surface (Side A).

Date:

Bldg. #223, Area 1-3

Photographic Documentation is for reference purposes and doesn’t necessarily include all the surfaces with lead.

Date:

Bldg. #223, Area 1-3 surface (Side C).

Date:

Bldg. #223, Area 1-4 Lead-based painted concrete lower wall surface (Side A).

Photographic Documentation is for reference purposes and doesn’t necessarily include all the surfaces with

Date:

Bldg. #223, Area 1-5

Date:

Bldg. #223, Area 1-9

Photographic Documentation is for reference purposes and doesn’t necessarily include all the surfaces with

Date:

Bldg. #223, Area 1-11

Date:

Bldg. #223, Area 1-14

Photographic Documentation is for reference purposes and doesn’t necessarily include all the surfaces with

Date:

Bldg. #223, Area 1-18

Date:

Bldg. #223, Area 1-18

Photographic Documentation is for reference purposes and doesn’t necessarily include all the surfaces with

Date:

Bldg. #223, Exterior Area (Side B) Lead-based painted concrete lower wall surface, steps and stringer.

Date:

Exterior Area (Side B) Lead-based painted concrete lower…