Re: District-Wide Baseline Testing for Lead in Water in Elementary Schools

Transcription

1 August 31, 2016 Mr. Jeffrey White Assistant Superintendent City School District of New Rochelle 515 North Avenue New Rochelle, NY Re: District-Wide Baseline Testing for Lead in Water in Elementary Schools Dear Mr. White, At your request on behalf of the City School District of New Rochelle (CSDNR), Louis Berger has continued the testing program for lead in water. Our last report was on Davis Elementary School. This latest round of assessment was a baseline testing program for lead in water at the remaining six Elementary Schools in the District. Louis Berger s team led by Certified Industrial Hygienist Mr. Joseph L. Sbarra, CIH conducted the testing in June of Schools included in the baseline testing are as follows: (dates of sampling in parentheses) Columbus Elementary School (June 08, 2016) Daniel Webster Elementary School (June 08, 2016) Henry Barnard Early Childhood Center (June 01, 2016) Jefferson Elementary School (June 01, 2016) Trinity Elementary School (June 15, 2016) William B. Ward Elementary School (June 02, 2016) Before a detailed discussion of the sampling methodology and testing results, some background and context are important in helping to have a big picture persepective. Background The request for lead in water testing by the CSDNR was in response to public concerns raised by the revelation of elevated levels of lead in drinking water in the Newark, NJ schools. As a pro-active and voluntary measure, the CSDNR requested that Louis Berger conduct testing of drinking water throughout the district. New Rochelle is one of the first school districts to have voluntarily done so. The initial testing at New Rochelle Schools occurred on March 29, 2016 and followed the EPA s guidelines Lead in Drinking Water in Schools and Non-Residential Buildings. That called for prioritized targeted sampling, which was done throughout the CSDNR. 565 Taxter Road, Suite 510 Elmsford NY USA Tel louisberger.com Page 1

2 The initial sampling reflected results in excess of the EPA Action Level for lead content at the George M. Davis Elementary School; based upon that, testing at that school was expanded in April That expanded testing revealed additional locations in excess of the EPA Action Level. The CSDNR immediately contacted the Westchester County Department of Health (DOH) to seek their expert guidance. The Westchester DOH recommended baseline testing throughout the District. All the districtwide baseline testing was conducted in concurrence with the Westchester County Dept. of Health (WCDOH). Prior to the baseline survey, representatives from Louis Berger, WCDOH and CSDNR reviewed and agreed upon the sampling strategy after an examination of the plumbing system at each School. Baseline testing at the George M. Davis Elementary School took place in May of 2016 and a separate report was issued for that School. Baseline testing was conducted at Davis first because by that point we had already identified problems from initial sampling. Baseline testing was conducted at the remaining six elementary level buildings throughout June Elementary schools were tested first as younger children are at greater risk of the effects of lead in drinking water. Since EPA guidelines require baseline testing to be performed under normal use conditions, no further testing was done during the summer break. Secondary schools are scheduled for testing in September Sampling Methodology Sampling Plan In developing the sampling plan for the baseline testing, Louis Berger and WCDOH conducted a thorough examination of the plumbing system in each Elementary School. One of the most important aspects for a baseline sampling program is to determine the location of the water service line. Sampling at each School started from location closest to the service line entrance and proceeded outwards from that point. Maps depicting the sampling plan for each School are included in Appendix C. In addition to conducting the examination of the plumbing systems, determining the locations for inclusion in the baseline testing program is equally important. Louis Berger and WCDOH jointly examined each School to determine the sampling locations utilizing EPAs guidance as follows: Drinking fountains Kitchen sinks Classroom combination sinks and drinking fountains Teacher's lounge sink, nurse's office sink Any sink known to be or visibly used for consumption (for example, coffee maker or cups are nearby) louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 2

3 Another aspect of a baseline sampling plan includes collecting a sample of the water that comes from the service main. After the collection of the initial screening and follow-up samples described below, a water sample from the service line entrance in each School was collected using the following methodology as recommended by the EPA: Open the tap closest to the service connection. Let the water run, and feel the temperature of the water. As soon as the water changes from warm to cold, collect the sample. Protocols for Water Testing EPA recommends that a two-step sampling protocol be followed for identifying lead contamination, especially in large schools where many samples may be taken. In Step 1, screening samples are collected to identify the location of outlets providing water with high lead levels. In Step 2, follow-up water samples are taken from problem locations. The sampling procedure suggested by the WCDOH involved two distinct rounds of sampling: A round of initial screening, first-draw samples; and A separate round of follow-up, 30-second flush samples. Initial Screening Samples In Step 1, initial screening samples were taken to determine (1) the lead content of water entering the school and (2) the lead content of water sitting in various outlets within the school. The goal of Step 1 is to identify problem outlets or outlets with high lead concentrations. Initial screening samples involve the collection of "morning, first-draw" water. Morning, first-draw water most often contains the highest concentrations of lead. Such samples will, therefore, generally reflect the "worst case scenario" for a given outlet. Follow-Up Samples In Step 2, if initial test results reveal lead concentrations greater than 20 ppb for a given outlet, follow-up samples are analyzed. EPA has established this numeric cut-off, or trigger to ensure that the sources of lead >20ppb contamination in drinking water outlets are identified. Follow-up samples involve the collection of water from an outlet where the water has run for 30 seconds. This sampling approach is designed to analyze the lead content in the water in the plumbing behind the wall and the outlet. A comparison of initial and follow-up samples makes it possible to assess where the lead may be getting into the drinking water: either from the outlet or from the plumbing directly behind the outlet. Though the EPA recommended action level is 20 ppb, Louis Berger and CSDNR chose to use the more stringent action level standard of 15 ppb that applies to water utilities/providers. Note: for this baseline sampling event, the WCDOH recommended that all follow-up samples be analyzed, regardless of whether or not they exceeded the action level. louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 3

4 As the EPA suggests, water samples were collected before the school opened and before any water was used. The EPA also recommends that the water should sit in the pipes unused for at least 8 hours but not more than 18 hours before a sample is taken; again, this was the case for each sample collected by Louis Berger. The 8 18 hour time distinction is made to ensure that the water collected is representative of the building's normal water use patterns. Samples were submitted to the RJ Lee Group and York Analytical Laboratories for analysis while maintaining chain-of-custody. A copy of laboratory results and the chain of custody are presented at the end of this report in Appendix A. Both the RJ Lee Group and York Analytical Laboratories are NY State Department of Health approved for analysis of lead in potable water. Laboratory approvals can be found in Appendix B. Assessment Results Discussion The analytical results for samples that exceeded the 15 ppb action level are presented in the Baseline Testing Results Exceedance Table for each School on the next page. For reference: the A samples are the initial screening, first draw samples; B samples are the follow-up samples that were collected after a 30-second flush. Overall, the results of the baseline testing were very favorable, with only a few isolated locations that exceeded the 15 ppb action level. Sample ID Baseline Testing Results Exceedance Tables Columbus Elementary School (1 location) Date Floor Location Lead Level (ppb) 02A 06/08/16 Ground Drinking Fountain between Rms. 2/ B 06/08/16 Ground Drinking Fountain between Rms. 2/ Daniel Webster Elementary School (5 locations) Sample Lead Level Date Floor Location ID (ppb) 13B 06/08/16 Cellar Sink Room B 06/08/16 2 nd Drinking Fountain Hallway outside Room A 06/08/16 2 nd Sink (2 nd on R side) Science Room A 06/08/16 2 nd Sink (back wall) Science Room A 06/08/16 2 nd Sink Room louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 4

5 Henry Barnard Early Childhood Center (6 locations) Sample Lead Level Date Floor Location ID (ppb) 01A 06/01/16 BM Drinking Fountain Room A 06/01/16 BM Drinking Fountain Room A 06/01/16 1 st Drinking Fountain Room A 06/01/16 1 st Drinking Fountain Room B 06/01/16 1 st Drinking Fountain Room A 06/01/16 2 nd Drinking Fountain Room A 06/01/16 2 nd Drinking Fountain Room B 06/01/16 2 nd Drinking Fountain Room Jefferson Elementary School (2 locations) Sample Lead Level Date Floor Location ID (ppb) 11A 06/01/16 Ground Sink Room 2A A 06/01/16 Ground Drinking Fountain Room 2A B 06/01/16 Ground Drinking Fountain Room 2A 41.6 Trinity Elementary School (2 locations) Sample Lead Level Date Floor Location ID (ppb) 11A 06/15/16 1 st Drinking Fountain (L) Hallway outside Auditorium A 06/15/16 1 st Sink Room William B. Ward Elementary School (5 locations) Sample Lead Level Date Floor Location ID (ppb) 08A 06/02/16 Ground Drinking Fountain Room B 06/02/16 Ground Drinking Fountain Room A 06/02/16 Ground Drinking Fountain Room B 06/02/16 Ground Drinking Fountain Room A 06/02/16 Ground Drinking Fountain Room A 06/02/16 1 st Drinking Fountain Room A 06/02/16 1 st Drinking Fountain Room louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 5

6 Conclusions and Recommendations For the Baseline testing program, 206 total drinking water locations were tested throughout 6 Schools: 19 (9.2%) of the initial, first draw samples collected exceeded the EPA action level of 15 ppb. Additionally, 8 (3.9%) of the follow-up samples exceeded the EPA action level. No exceedances from the service line entrances were detected. Upon receipt of the results, Louis Berger immediately recommended to the CSDNR to temporarily remove from service all sampling locations that exceeded 15 ppb. The CSDNR agreed and immediately complied with the recommendation. Louis Berger makes the following recommendations: Initial Steps: Shut-off all water at specified locations in excess of EPA Action Level. Turned off or disconnect all sinks in classrooms identified in excess of EPA Action Level. Turn off all drinking fountain locations identified in excess of EPA Action Level. Install water coolers at all locations where drinking fountains are shut off. Install EPA-approved filtration systems at each of the food preparation sinks in the kitchens. Next Steps: Install new drinking fountains in hallways to establish centralized drinking locations; Install filters at drinking fountains/sources; Remove fountains in classrooms; Modify sinks in classrooms to prevent bottle filling; Clean all faucet aerators (if present) for all sources used for drinking and/or cooking. Lead bearing sediment may end up in drinking water from physical corrosion of leaded solder and can build up in the aerator over time. Establish a flushing program as a routine, interim control measure: Once a week on Monday s flush the interior plumbing. To do this, locate the faucet furthest away from the service line on each wing and floor of the building, open the faucets wide, and let the water run for 10 minutes. Daily flushing for all drinking fountains. Open valves at these fountains and let the water run for one minute. Consider establishing a program for periodic testing for lead in drinking water at the School. After implementing recommendations, the CSDNR should conduct follow-up testing of the impacted sources to determine the effectiveness of the corrective action(s). louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 6

7 Limitations, Exceptions and Assumptions Opinions and recommendations presented in this report apply to site conditions and features as they existed at the time of Louis Berger s site visits, and those reasonably foreseeable. They cannot necessarily apply to conditions and features of which Louis Berger is unaware and has not had the opportunity to evaluate. The conclusions presented in this report are professional opinions based solely upon Louis Berger s visual observations of accessible areas, laboratory test data, and current regulatory requirements. These conclusions are intended exclusively for the purpose state herein, at the sites indicated, and for the project indicated. It is important to recognize that this was a targeted sampling program as opposed to sampling program for every single drinking water source. Therefore, Louis Berger cannot act as insurers and cannot certify that all drinking water sources within Schools of the CSDNR have been identified or are safe. No expressed or implied representation or warranty is included or intended in our reports, except that our services were performed, within the limits prescribed by our client, with the customary thoroughness and competence of our profession. If you have any questions concerning this information, please feel free to contact me at (212) or Mr. Craig Napolitano, CHMM at (212) Sincerely, Joseph L. Sbarra, CIH Manager, Industrial Hygiene cc: C. Napolitano louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools Page 7

8 APPENDIX A LABORATORY RESULTS CHAIN-OF-CUSTODY louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools

9 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 9, 2016 Report Date: June 15, 2016 Client Project: Columbus E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q COL-01A Gd. Sink Custodians Office Bathroom PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-02A Gd. DF Between Rooms 2/4 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-03A Gd. DF Between Rooms 6/8 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-04A Gd. Sink Room 16A PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-05A Gd. Sink Room 16D PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-06A Gd. DF Between Rooms 15/17 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-07A Gd. DF Room 20 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-08A Gd. Sink Room 22 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-09A Gd. DF Hallway outside Bathroom & Room 22 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-10A Gd. Sink Room 23 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-11A Gd. Sink Room 30 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-12A 1st Sink Nurses Office PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-13A 1st Kitchen Wash Sink PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-14A 1st Kitchen Rinse Sink PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-15A 1st DF Kitchen PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-16A 1st Sink Faculty Lounge PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-17A 1st DF Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-18A 1st DF (L) Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-19A 1st DF (R) Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-20A 1st Sink Room 42 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-21A 1st Sink Room 44 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-22A 1st Sink Room 52 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-23A 2nd Sink Room 59 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-24A 2nd Sink Room 62 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-25A 2nd DF (R) Hallway outside Room 60 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-26A 2nd DF (L) Hallway outside Room 60 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-01B Gd. Sink Custodians Office Bathroom PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-02B Gd. DF Between Rooms 2/4 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-03B Gd. DF Between Rooms 6/8 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-04B Gd. Sink Room 16A PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC Page 1 of 3 Philip Grindle Laboratory Supervisor

10 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 9, 2016 Report Date: June 15, 2016 Client Project: Columbus E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q COL-05B Gd. Sink Room 16D PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-06B Gd. DF Between Rooms 15/17 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-07B Gd. DF Room 20 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-08B Gd. Sink Room 22 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-09B Gd. DF Hallway outside Bathroom & Room 22 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-10B Gd. Sink Room 23 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-11B Gd. Sink Room 30 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-12B 1st Sink Nurses Office PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-13B 1st Kitchen Wash Sink PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-14B 1st Kitchen Rinse Sink PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-15B 1st DF Kitchen PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-16B 1st Sink Faculty Lounge PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-17B 1st DF Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-18B DF (L) Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-19B DF (R) Gymnasium (SW side entrance) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-20B Sink Room 42 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-21B Sink Room 44 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-22B Sink Room 52 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-23B Sink Room 59 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC COL-24B Sink Room 62 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-25B DF (R) Hallway outside Room 60 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-26B DF (L) Hallway outside Room 60 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC COL-27 Gd. Tap in Gas Meter Room Water Main Sample PA /08/2016 EPA Lead Drinking Water /10/2016 PNC Analyst Comments: Report Qualifiers (Q): P : PA-DEP Accredited (PA DEP Lab ID , NELAP) E = Value above highest calibration standard B = Analyte detected in the associated Method Blank N : NY ELAP Accredited (NY ELAP Lab Code 10884) J = Value below lowest calibration standard but above MDL (Method Detection Limit) S = Spike Recovery outside accepted limits C : CA ELAP Accredited (CA ELAP Certificate 1970) L = LCS (Laboratory Control Standard)/SRM (Standard Reference Material) recovery R = RPD (relative percent difference) outside accepted limits : Test (analyte-matrix-preparation-analysis) is performed under RJLG's General Quality System requirements and is outside accepted recovery limits D = RL (reporting limit verification) outside accepted limits Page 2 of 3 Philip Grindle Laboratory Supervisor

11 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 9, 2016 Report Date: June 15, 2016 Client Project: Columbus E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q under RJLG's General Quality System requirements and is not part to any of the above scopes of accreditations H = Holding times for preparation or analysis exceeded NP = Not Provided These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, RJ Lee Group will store the samples for a period of thirty (30) days before discarding. A shipping and handling fee will be assessed for the return of any samples. This laboratory operates in accord with ISO 17025:2005 guidelines, and holds a limited scope of accreditations under different accrediting agencies; refer to for more information and current status. This report may not be used to claim product endorsement by any laboratory accrediting agency. The results contained in this report relate only to the items tested or to the sample(s) as received by the laboratory. Any reproduction of this document must be in full for the report to be valid. Unless otherwise noted (either in the comments section of the report and/or with the appropriate qualifiers under the report qualifiers (Q) column) the following apply: (a) Samples were received in good condition, (b) All QC samples are within acceptable established limits, (c) All samples designated as NELAP meet the requirements of the NELAC standard; if not applicable qualifiers will be used to designate the non-compliance and (d) Results have not been blank corrected. Quality Control data is available upon request. Page 3 of 3 Philip Grindle Laboratory Supervisor

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14 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 9, 2016 Report Date: June 15, 2016 Client Project: Daniel Webster E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA SM 2130B Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WEB-01A 1st DF Hallway outside Room 101 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-02A 1st DF Hallway outside Room 101 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-03A 1st Sink Room 109 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-04A 1st Sink Room 110 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-05A 1st Sink Room 111 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-06A 1st DF Hallway Near Elevator PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-07A 1st DF Cafeteria PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-08A 1st Sink Kids Kitchen PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-09A 1st Kitchen Prep Sink PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-10A 1st Kitchen Wash/Rinse Sink PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-11A Cellar Sink Dance Studio PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-12A Cellar DF Hallway outside Faculty Bathroom PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-13A Cellar Sink Room 012 (Computer Lab) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-14A 2nd Sink Faculty Lounge PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-15A 2nd DF Hallway outside Room 201 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-16A 2nd Sink Room 204 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-17A 2nd DF Hallway outside Room 208 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-18A 2nd Sink Room 208 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-19A 2nd DF Hallway Near Elevator PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-20A 2nd Sink (1st on R side) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-21A 2nd Sink (2nd on R side) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water /13/2016 PNC WEB-22A 2nd Sink (Back Wall) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-23A 2nd Sink (R) Room 213 (Art) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-24A 2nd Sink (L) Room 213 (Art) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-25A 2nd Sink Room 220 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-26A 2nd Sink Room 210 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-01B 1st DF Hallway outside Room 101 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-02B 1st DF Hallway outside Room 101 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-03B 1st Sink Room 109 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-04B 1st Sink Room 110 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-05B 1st Sink Room 111 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-06B 1st DF Hallway Near Elevator PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-07B 1st DF Cafeteria PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-08B 1st Sink Kids Kitchen PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-09B 1st Kitchen Prep Sink PA /08/2016 EPA Lead Drinking Water /10/2016 PNC Page 1 of 2 Philip Grindle Laboratory Supervisor

15 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 9, 2016 Report Date: June 15, 2016 Client Project: Daniel Webster E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA SM 2130B Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WEB-10B 1st Kitchen Wash/Rinse Sink PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-11B Cellar Sink Dance Studio PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-12B Cellar DF Hallway outside Faculty Bathroom PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-13B Cellar Sink Room 012 (Computer Lab) PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-14B 2nd Sink Faculty Lounge PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-15B 2nd DF Hallway outside Room 201 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-16B 2nd Sink Room 204 PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-17B 2nd DF Hallway outside Room 208 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-18B 2nd Sink Room 208 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-19B 2nd DF Hallway Near Elevator PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-20B 2nd Sink (1st on R side) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-21B 2nd Sink (2nd on R side) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-22B 2nd Sink (Back Wall) Room 214 (Science) PA /08/2016 EPA Lead Drinking Water < /10/2016 PNC WEB-23B 2nd Sink (R) Room 213 (Art) PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-24B 2nd Sink (L) Room 213 (Art) PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-25B 2nd Sink Room 220 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-26A 2nd Sink Room 210 PA /08/2016 EPA Lead Drinking Water /10/2016 PNC WEB-27 BM Tap in Water Meter Room Water Main Sample PA /08/2016 EPA Lead Drinking Water /10/2016 PNC Analyst Comments: Report Qualifiers (Q): P : PA-DEP Accredited (PA DEP Lab ID , NELAP) E = Value above highest calibration standard B = Analyte detected in the associated Method Blank N : NY ELAP Accredited (NY ELAP Lab Code 10884) J = Value below lowest calibration standard but above MDL (Method Detection Limit) S = Spike Recovery outside accepted limits C : CA ELAP Accredited (CA ELAP Certificate 1970) L = LCS (Laboratory Control Standard)/SRM (Standard Reference Material) recovery R = RPD (relative percent difference) outside accepted limits : Test (analyte-matrix-preparation-analysis) is performed under RJLG's General Quality System requirements and is not part to any of the above scopes of accreditations outside accepted recovery limits H = Holding times for preparation or analysis exceeded D = RL (reporting limit verification) outside accepted limits NP = Not Provided These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, RJ Lee Group will store the samples for a period of thirty (30) days before discarding. A shipping and handling fee will be assessed for the return of any samples. This laboratory operates in accord with ISO 17025:2005 guidelines, and holds a limited scope of accreditations under different accrediting agencies; refer to for more information and current status. This report may not be used to claim product endorsement by any laboratory accrediting agency. The results contained in this report relate only to the items tested or to the sample(s) as received by the laboratory. Any reproduction of this document must be in full for the report to be valid. Unless otherwise noted (either in the comments section of the report and/or with the appropriate qualifiers under the report qualifiers (Q) column) the following apply: (a) Samples were received in good condition, (b) All QC samples are within acceptable established limits, (c) All samples designated as NELAP meet the requirements of the NELAC standard; if not applicable qualifiers will be used to designate the non-compliance and (d) Results have not been blank corrected. Quality Control data is available upon request. Page 2 of 2 Philip Grindle Laboratory Supervisor

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18 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 1, 2016 Report Date: June 9, 2016 Client Project: Henry Barnard E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q BARN-01A BM DF Room 3 (Music Room) PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-02A BM Kitchen Sink (L) Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-03A BM Kitchen Sink (R) Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-04A BM Sink Room 7 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-05A BM DF Room 6 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-06A 1st DF (R) Hallway Near Gymnasium PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-07A 1st DF (R) Hallway Outside Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-08A 1st DF (L) Hallway Outside Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-09A 1st Sink Room 110B PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-10A 1st Bathroom Sink closest to door Near Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-11A 1st DF Room 107 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-12A 1st DF Room 108 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-13A 2nd DF (L) Hallway Outside Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-14A 2nd Sink Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-15A 2nd DF (L) Hallway Outside Room 206 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-16A 2nd Bathroom Sink closest to door Near Room 211 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-17A 2nd DF Room 211 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-18A 2nd DF Room 212 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-01B BM DF Room 3 (Music Room) PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-02B BM Kitchen Sink (L) Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-03B BM Kitchen Sink (R) Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-04B BM Sink Room 7 PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC BARN-05B BM DF Room 6 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-06B 1st DF (R) Hallway Near Gymnasium PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-07B 1st DF (R) Hallway Outside Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-08B 1st DF (L) Hallway Outside Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-09B 1st Sink Room 110B PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-10B 1st Bathroom Sink closest to door Near Room 103 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-11B 1st DF Room 107 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-12B 1st DF Room 108 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC Page 1 of 2 Philip Grindle Laboratory Supervisor

19 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 1, 2016 Report Date: June 9, 2016 Client Project: Henry Barnard E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q BARN-13B 2nd DF (L) Hallway Outside Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-14B 2nd Sink Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-15B 2nd DF (L) Hallway Outside Room 206 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-16B 2nd Bathroom Sink closest to door Near Room 211 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-17B 2nd DF Room 211 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-18B 2nd DF Room 212 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC BARN-19 BM Sink in Boiler Room Water Main Sample PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC Analyst Comments: Report Qualifiers (Q): P : PA-DEP Accredited (PA DEP Lab ID , NELAP) E = Value above highest calibration standard B = Analyte detected in the associated Method Blank N : NY ELAP Accredited (NY ELAP Lab Code 10884) J = Value below lowest calibration standard but above MDL (Method Detection Limit) S = Spike Recovery outside accepted limits C : CA ELAP Accredited (CA ELAP Certificate 1970) L = LCS (Laboratory Control Standard)/SRM (Standard Reference Material) recovery R = RPD (relative percent difference) outside accepted limits : Test (analyte-matrix-preparation-analysis) is performed under RJLG's General Quality System requirements and is not part to any of the above scopes of accreditations outside accepted recovery limits H = Holding times for preparation or analysis exceeded D = RL (reporting limit verification) outside accepted limits NP = Not Provided These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, RJ Lee Group will store the samples for a period of thirty (30) days before discarding. A shipping and handling fee will be assessed for the return of any samples. This laboratory operates in accord with ISO 17025:2005 guidelines, and holds a limited scope of accreditations under different accrediting agencies; refer to for more information and current status. This report may not be used to claim product endorsement by any laboratory accrediting agency. The results contained in this report relate only to the items tested or to the sample(s) as received by the laboratory. Any reproduction of this document must be in full for the report to be valid. Unless otherwise noted (either in the comments section of the report and/or with the appropriate qualifiers under the report qualifiers (Q) column) the following apply: (a) Samples were received in good condition, (b) All QC samples are within acceptable established limits, (c) All samples designated as NELAP meet the requirements of the NELAC standard; if not applicable qualifiers will be used to designate the non-compliance and (d) Results have not been blank corrected. Quality Control data is available upon request. Page 2 of 2 Philip Grindle Laboratory Supervisor

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22 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Jefferson E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q JEFF-01A BM Sink Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-02A GR DF Room 14 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-03A GR DF Room 12 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-04A GR DF Hallway Outside Room 8 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-05A GR Kitchen Sink (L) - Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-06A GR Kitchen Sink (R) - Cafeteria PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-07A GR DF (R) Hallway Outside Room 4 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-08A GR DF (L) Hallway Outside Room 4 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-09A GR Sink Health Office PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-10A GR Sink Room 1 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-11A GR Sink Room 2A PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-12A GR DF (L) Hallway Outside Room 28 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-13A GR DF (R) Hallway Outside Room 28 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-14A 2nd DF Room 50 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-15A 2nd DF Room 48 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-16A 2nd DF (L) Hallway Outside Room 44 PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-18A 2nd DF (L) Hallway Outside Library PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-19A 2nd DF (L) Hallway Outside Room 64 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-20A 2nd DF (R) Hallway Outside Room 64 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-22A OUT DF Outdoors in Play Area PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-23A GR DF Room 2A PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-01B BM Sink Teachers Lounge PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-02B GR DF Room 14 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-03B GR DF Room 12 PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-04B GR DF Hallway Outside Room 8 PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-05B GR Kitchen Sink (L) - Cafeteria PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-06B GR Kitchen Sink (R) - Cafeteria PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-07B GR DF (R) Hallway Outside Room 4 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-08B GR DF (L) Hallway Outside Room 4 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-09B GR Sink Health Office PA /01/2016 EPA Lead Drinking Water /03/2016 PNC Page 1 of 2 Philip Grindle Laboratory Supervisor

23 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Jefferson E.S. Baseline Purchase Order No.: N/A Prep/Analysis: EPA Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q JEFF-10B GR Sink Room 1 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-11B GR Sink Room 2A PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-12B GR DF (L) Hallway Outside Room 28 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-13B GR DF (R) Hallway Outside Room 28 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-14B 2nd DF Room 50 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-15B 2nd DF Room 48 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-16B 2nd DF (L) Hallway Outside Room 44 PA /01/2016 EPA Lead Drinking Water < /03/2016 PNC JEFF-18B 2nd DF (L) Hallway Outside Library PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-19B 2nd DF (L) Hallway Outside Room 64 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-20B 2nd DF (R) Hallway Outside Room 64 PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-22B OUT DF Outdoors in Play Area PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-23B GR DF Room 2A PA /01/2016 EPA Lead Drinking Water /03/2016 PNC JEFF-21 BM Meter Room Water Main Sample PA /01/2016 EPA Lead Drinking Water /03/2016 PNC Analyst Comments: Report Qualifiers (Q): P : PA-DEP Accredited (PA DEP Lab ID , NELAP) E = Value above highest calibration standard B = Analyte detected in the associated Method Blank N : NY ELAP Accredited (NY ELAP Lab Code 10884) J = Value below lowest calibration standard but above MDL (Method Detection Limit) S = Spike Recovery outside accepted limits C : CA ELAP Accredited (CA ELAP Certificate 1970) L = LCS (Laboratory Control Standard)/SRM (Standard Reference Material) recovery R = RPD (relative percent difference) outside accepted limits : Test (analyte-matrix-preparation-analysis) is performed under RJLG's General Quality System requirements and is not part to any of the above scopes of accreditations outside accepted recovery limits H = Holding times for preparation or analysis exceeded D = RL (reporting limit verification) outside accepted limits NP = Not Provided These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, RJ Lee Group will store the samples for a period of thirty (30) days before discarding. A shipping and handling fee will be assessed for the return of any samples. This laboratory operates in accord with ISO 17025:2005 guidelines, and holds a limited scope of accreditations under different accrediting agencies; refer to for more information and current status. This report may not be used to claim product endorsement by any laboratory accrediting agency. The results contained in this report relate only to the items tested or to the sample(s) as received by the laboratory. Any reproduction of this document must be in full for the report to be valid. Unless otherwise noted (either in the comments section of the report and/or with the appropriate qualifiers under the report qualifiers (Q) column) the following apply: (a) Samples were received in good condition, (b) All QC samples are within acceptable established limits, (c) All samples designated as NELAP meet the requirements of the NELAC standard; if not applicable qualifiers will be used to designate the non-compliance and (d) Results have not been blank corrected. Quality Control data is available upon request. Page 2 of 2 Philip Grindle Laboratory Supervisor

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75 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Purchase Order No.: N/A Prep/Analysis: EPA Ward E.S. Baseline Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WARD-01A GD Sink-Room 128 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-02A GD DF-Room 126 (Sink Slow Drip) PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-03A GD DF-Room 124 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-04A GD DF-Room 122 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-05A GD DF-Room 120 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-06A GD DF-Room 118 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-07A GD DF-Room 129 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-08A GD Sink-Room 131 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-09A GD DF-Room 133 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-10A GD DF-Hallway Outside Room 133 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-11A GD DF-Room 127 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-12A GD DF-Hallway Outside Room 127 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-13A GD DF-Room 125 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-14A GD-DF-Hallway Outside Room 111A PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-16A GD Sink-Room 111B PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-17A GD DF-Room 103 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-18A GD DF-Room 105 PA /02/2016 EPA Lead Drinking Water /08/2016 PNC WARD-19A GD DF-Room 107 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-20A GD DF-Room 104 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-21A GD DF-Room 106 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-22A GD DF-Room 108 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-23A GD DF-Room 110 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-24A GD DF-Room 112 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-25A LWR DF (stand-alone)-kitchen PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-26A LWR DF (L)-Kitchen PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-27A LWR DF (R)-Kitchen PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-28A LWR DF-Hallway Outside PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-29A LWR DF-Hallway outside Gymnasium PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-30A LWR Sink-Lower Lounge PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-31A 1st DF-Room 36 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC Page 1 of 5 Philip Grindle Laboratory Supervisor

76 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Purchase Order No.: N/A Prep/Analysis: EPA Ward E.S. Baseline Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WARD-32A 1st DF-Room 31 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-33A 1st DF-Room 33 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-34A 1st DF-Room 35 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-35A 1st DF-Room 37 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-36A 1st DF-Room 39 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-37A 1st DF-Room 41 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-38A 1st DF-Room 29 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-39A 1st DF-Hallway outside Room 27 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-40A 1st DF-Room 27 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-41A 1st DF-Room 25 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-42A 1st DF-Room 38 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-43A 1st DF-Hallway outside Room 38 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-44A 1st DF-Room 40 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-45A 1st DF-Room 42 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-46A 1st DF-Hallway outside Teacher's Lounge PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-47A 1st Sink Teachers Lounge PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-48A 1st Sink Nurses Office Exam Room PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-49A 1st Sink Principals Office PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-50A 1st Sink Nurse Office PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-51A 1st DF Room 2 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-52A 1st DF Room 4 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-53A 1st DF Room 6 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-54A 1st DF Room 7 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-55A 1st Sink Room 8 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-56A 1st DF Room 9 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-57A 1st DF Room 10 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-58A 1st DF Room 11 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-59A 1st DF Room 12 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-60A 1st DF-Room14 (Low Pressure) PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-61A 1st DF Room 16 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC Page 2 of 5 Philip Grindle Laboratory Supervisor

77 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Purchase Order No.: N/A Prep/Analysis: EPA Ward E.S. Baseline Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WARD-62A 1st DF Room 18 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-63A 1st DF Room 20 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-01B GD Sink - Room 128 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-02B GD DF - Room 126 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-03B GD DF - Room 124 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-04B GD DF - Room 122 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-05B GD DF Room 120 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-06B GD DF Room 118 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-07B GD DF Room 129 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-08B GD DF Room 131 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-09B GD DF Room 133 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-10B GD DF Hallway Outside Room 133 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-11B GD DF Room 127 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-12B GD DF Hallway Outside Room 127 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-13B GD DF Room 125 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-14B GD DF Hallway Outside Room 111A PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-16B GD Sink Room 111B PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-17B GD DF Room 103 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-18B GD DF Room 105 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-19B GD DF Room 107 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-20B GD DF Room 104 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-21B GD DF Room 106 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-22B GD DF Room 108 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-23B GD DF Room 110 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-24B GD DF Room 112 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-25B LWR DF (stand-alone) Kitchen PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-26B LWR DF (L) Kitchen PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-27B LWR DF (R) Kitchen PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-28B LWR DF Hallway outside Cafeteria PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-29B LWR DF Hallway outside Gymnasium PA /02/2016 EPA Lead Drinking Water /06/2016 PNC Page 3 of 5 Philip Grindle Laboratory Supervisor

78 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Purchase Order No.: N/A Prep/Analysis: EPA Ward E.S. Baseline Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WARD-30B LWR Sink Lower Lounge PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-31B 1st DF Room 36 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-32B 1st DF Room 31 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-33B 1st DF Room 33 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-34B 1st DF Room 35 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-35B 1st DF Room 37 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-36B 1st DF Room 39 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-37B 1st DF Room 41 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-38B 1st DF Room 29 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-39B 1st DF Hallway outside Room 27 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-40B 1st DF Room 27 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-41B 1st DF Room 25 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-42B 1st DF Room 38 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-43B 1st DF Hallway outside Room 38 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-44B 1st DF Room 40 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-45B 1st DF Room 42 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-46B 1st DF Hallway outside Teachers Lounge PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-47B 1st Sink Teachers Lounge PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-48B 1st Sink-Nurse's Office Exam Room PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-49B 1st Sink Principals Office PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-50B 1st Sink Nurse Office PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-51B 1st DF Room 2 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-52B 1st DF Room 4 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-53B 1st DF Room 6 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-54B 1st DF Room 7 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-55B 1st Sink Room 8 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-56B 1st DF Room 9 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-57B 1st DF Room 10 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-58B 1st DF Room 11 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-59B 1st DF Room 12 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC Page 4 of 5 Philip Grindle Laboratory Supervisor

79 RJ Lee Group, Inc. 350 Hochberg Road, Monroeville, PA Tel: (724) Fax: (724) LABORATORY REPORT Louis Berger & Associates, PC 565 Taxter Road Suite 510 Elmsford, NY Attn: Joseph Sbarra RJ Lee Group Job No.: CRH RJ Lee Group Chemistry Job No.: PA Samples Received: June 2, 2016 Report Date: June 9, 2016 Client Project: Purchase Order No.: N/A Prep/Analysis: EPA Ward E.S. Baseline Client Sample ID RJ Lee Group ID Sampling Date Preparation/ Analysis Analyte Matrix Sample Concentration Total µg/l (PPB) Minimum Reporting Limit µg/l (PPB) Analysis Date Q WARD-60B 1st DF Room 14 (Low Pressure) PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-61B 1st DF Room 16 PA /02/2016 EPA Lead Drinking Water /06/2016 PNC WARD-62B 1st DF Room 18 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-63B 1st DF Room 20 PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC WARD-64 GND Water Main Sample Custodial Office PA /02/2016 EPA Lead Drinking Water < /06/2016 PNC Analyst Comments: Sample Ward-15A GD DF-Room 111B was voided Report Qualifiers (Q): P : PA-DEP Accredited (PA DEP Lab ID , NELAP) E = Value above highest calibration standard B = Analyte detected in the associated Method Blank N : NY ELAP Accredited (NY ELAP Lab Code 10884) J = Value below lowest calibration standard but above MDL (Method Detection Limit) S = Spike Recovery outside accepted limits C : CA ELAP Accredited (CA ELAP Certificate 1970) L = LCS (Laboratory Control Standard)/SRM (Standard Reference Material) recovery R = RPD (relative percent difference) outside accepted limits : Test (analyte-matrix-preparation-analysis) is performed under RJLG's General Quality System requirements and is not part to any of the above scopes of accreditations outside accepted recovery limits H = Holding times for preparation or analysis exceeded D = RL (reporting limit verification) outside accepted limits NP = Not Provided These results are submitted pursuant to RJ Lee Group's current terms and conditions of sale, including the company's standard warranty and limitation of liability provisions. No responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, RJ Lee Group will store the samples for a period of thirty (30) days before discarding. A shipping and handling fee will be assessed for the return of any samples. This laboratory operates in accord with ISO 17025:2005 guidelines, and holds a limited scope of accreditations under different accrediting agencies; refer to for more information and current status. This report may not be used to claim product endorsement by any laboratory accrediting agency. The results contained in this report relate only to the items tested or to the sample(s) as received by the laboratory. Any reproduction of this document must be in full for the report to be valid. Unless otherwise noted (either in the comments section of the report and/or with the appropriate qualifiers under the report qualifiers (Q) column) the following apply: (a) Samples were received in good condition, (b) All QC samples are within acceptable established limits, (c) All samples designated as NELAP meet the requirements of the NELAC standard; if not applicable qualifiers will be used to designate the non-compliance and (d) Results have not been blank corrected. Quality Control data is available upon request. Page 5 of 5 Philip Grindle Laboratory Supervisor

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84 APPENDIX B LABORATORY APPROVALS louisberger.com District-Wide Baseline Testing for Lead in Water in New Rochelle Elementary Schools

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