Document RjQDMJqjnykrJqxZqyMxzwYDV

Report Prepared by: Report Approved by: NPDES Pretreatment Compliance Sampling Inspection Report Standard Printed Circuits, Inc. 44 South Main Street Sherburne, New York 13460 40 CFR Parts 403 & 413.84(b) SIU Permit: #3 February 23, 2022 THUAN TRAN Digitally signed by THUAN TRAN _________________D_ate_: _20_22_.0_4._20_0_8:3_5_:04_-_04_'0_0' Thuan Tran, Physical Scientist Date: ________________ Digitally signed by ROBERT ROBERT MORRELL MORRELL _________________D_at_e: _20_22_.0_4.2_0_09_:3_6:1_1_-0_4'0_0'_ Robert Morrell, Acting Chief Monitoring Operations Section Date: ________________ Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 1.0 OBJECTIVE On February 23, 2022, at the request of the Enforcement and Compliance Assurance Division (ECAD), a Pretreatment Compliance Sampling Inspection (CSI) was conducted at Standard Printed Circuits, Inc. in Sherburne, New York. The objective of the Pretreatment CSI was to gather information necessary to determine compliance with the requirements and limitations of 40 CFR Part 403 - General Pretreatment Regulations for Existing and New Sources of Pollution, and 40 CFR Part 413.84(b) - Electroplating Point Source Category, Subpart H - Printed Circuit Board Subcategory Pretreatment Standards for Existing Sources, as well as the Standard Industrial User permit from the Village of Sherburne WWTP. 2.0 KEY PARTICIPANTS Listed below are key inspection participants and contact information, grouped by organization. U.S. Environmental Protection Agency Thuan Tran; Physical Scientist, Lead Inspector 732-321-445; Email: tran.thuan@epa.gov Kathleen Savino, Physical Scientist Standard Printed Circuits, Inc. Kevin Johnson, General Manager 607-674-2741; Email: kevin@standardpc.com Steve Lee, Wet Process Supervisor David Barker; Pretreatment System Manager Duane Coughlin; Production Operator 3.0 FACILITY DESCRIPTION 3.1 General Information Standard Printed Circuits, Inc., located at 44 South Main Street in Sherburne, New York, began operations in 1967 and occupies a 15,000 square foot manufacturing facility. Standard Printed Circuits, Inc. is an independently owned manufacturer of rigid printed circuit boards up to 14 layers and is categorized as Standard Industrial Classification (SIC) 3351 for Rolling, Drawing, and Extruding of Copper and the North American Industry Classification System (NAICS) 331420 for Copper Rolling, Drawing, Extruding, and Alloying. The company serves the communication, military, and medical sectors. Standard Printed Circuits, Inc. employs 18 personnel and operates 7:00AM to 4:30PM from Monday to Friday. Page 2 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 3.2 Process Information The printed circuit board consists of patterns of conductive material such as copper (Cu) formed on a non-conductive base that contains all the conductive materials. The facility is a "bare-board manufacturer" that produces boards with no components installed on them as specified by the clients so they may install components on the completed products at their facilities. The manufacturing process begins with the double-sides Cu-clad board consisting of a fiberglass laminate. The process can be characterized with the following generic phases that may vary with each specified custom product: 1. Shear laminated into panels that become the customized boards. 2. Arrange and mark-up panel for the boards to fit on it and that will later be cut out. 3. Computer-assisted drilling for each panel with customer-specified hole configurations provided by customer software. 4. Deburr panel by a dry, mechanical process done manually and rinse. 5. Scrub panel and rinse. 6. Direct metallization is used to coat the holes using an organic inductive polymer process that creates a protective film. 7. Panel undergoes the photoimaging process (laminate, expose, develop) by: a. Adhering the circuit pattern to the board. b. Shining UV light to adhere circuit pattern. c. Removing unexposed film so that bare metal surfaces are ready to be plated after a series of rinses. 8. Board electrolytically Cu-plated, rinsed, and dried with air knife. 9. Board electrolytically tin/lead (Sn/Pb) plated and rinsed, then step 10 or. 10. Board electrolytically nickel/gold (Ni/Au) plated or rinsed. 11. Board has remaining film stripped. 12. Board is etched via several rinses to remove excess Cu in areas of Sn/Pb. 13. Board is rinsed and dried. 14. Hot Air Solder Level (HASL). 15. Solder mask legend is applied. 16. Board is routed for electrical testing, inspection, and shipping. Standard Printed Circuits, Inc. business is mostly on a "per order basis" involving custom-made products but they produce some inventory of selected finished products. Most process tanks are dip tanks (manually operated), and semi-automated, except the etching process which is automated with conveyers. The facility also has a press room to manufacture multi-layer boards up to 14 double-sided printed circuits that can be laminated together into one multi-layer board as required by customer specifications. Page 3 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 The facility receives water from the Village of Sherburne. No further treatment is necessary for use in the manufacturing operation. Process wastewater is generated from eleven different locations within the manufacturing operation. They are as followed: 1. Plating Room 2. Wet Rack 3. Multiple-Layer Press 4. Solder Stripping 5. Etching 6. Tin/Lead Plating 7. Copper Plating 8. Pre-Line Rinse before Micro Tech/H2SO4 Bath 9. Small Scale Plating Rinse 10. Developer 11. Micro-Etching Process waste streams are conveyed to the floor drains, then flow into sump pits that are level controlled. The process wastewater is pumped to the final receiving sump pit in the waste treatment room where it is pumped into Equalization Tank #1. Sodium hydroxide (NaOH) and polymers are added into Equalization Tank #1 for pH adjustment and increased coagulation of solids while continuously mixing. The wastewater continues to Equalization Tank #2 where sodium hydroxide can be added, if necessary, to achieve the pH range between 7-9 Standard Units (SU). From Equalization Tank #2, the wastewater is pumped to the flocculation tank where a flocculant is mixed with the wastewater. The homogenized wastewater continues to the Lamella clarifier to allow for phase separation. The effluent from the clarifier discharges into the monitoring tank where copper and pH are monitored before discharging into the Village of Sherburne sewer collection system. Solids accumulated in the Lamella clarifier are pumped to the Plate-and-Frame Filter Press. The dewatered sludge is considered class F006 hazardous waste and is transported to World Resources Inc., in Pottsville, PA for recovery. The filtrate from the filter press is directed to the head of the On-Site Pretreatment System. 3.3 Facility Self-Monitoring Information Microbac Laboratories, Inc., located at 3821 Buck Drive, Cortland, NY, provides Standard Printed Circuits, Inc. with preserved and unpreserved sample containers and the chain of custody. Compliance samples are collected from the On-Site Pretreatment System monitoring tank by a facility employee. Samples are collected for cyanide (amendable to chlorine), metals (cadmium, chromium, copper, lead, and nickel), non-volatile organic analytes (NVOAs), pesticides and polychlorinated biphenyls (PCBs), oil & grease (O&G), hydrogen ion (pH), and volatile organic analytes (VOAs). Page 4 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 The samples and chain of custody are packed inside the sample cooler and delivered to the laboratory for analysis. On-site samples for pH, Temperature and Total Residual Chlorine (TRC) are not analyzed. 4.0 EPA SAMPLING/INSPECTION ACTIVITIES 4.1 Sampling Activities An ISCO automatic composite sampler was programmed to take 32 sample aliquots during the 8-hour sampling event from the On-Site Pretreatment System at the effluent monitoring location. The 8-hour composite sample was collected and analyzed for cyanide (amendable to chlorine) and metals (cadmium, chromium, copper, lead, and nickel). Grab-composite samples were collected and analyzed for non-volatile organic analytes (NVOAs), pesticides and polychlorinated biphenyls (PCBs). Multiple grab samples (3Xs) were collected for volatile organic analytes (VOAs) throughout the sampling day. The VOA grab samples were composited in the laboratory. A grab sample was collected and analyzed for Oil and Grease (O&G). On-site grab samples of the pretreated effluent were collected and analyzed for pH, Temperature and Total Residual Chlorine (TRC). All sample containers, preservation techniques and holding times were in accordance with USEPA requirements specified in 40 CFR Part 136. Signed and dated custody seals were placed across the lids and along the sides of the sample containers. The custody sealed sample containers were placed inside plastic sample bags and sealed up. All samples were transported on ice to the USEPA Laboratory in Edison, New Jersey for analysis. Split samples were collected and given to the facility representative. 4.2 Inspection Activities A Pretreatment Compliance Sampling Inspection at Standard Printed Circuits, Inc. was conducted on February 23, 2022. The inspectors met with Kevin Johnson; General Manager, Steve Lee; Wet Process Supervisor, David Baker; Pretreatment System Manager, and Duane Coughlin; Production Operator. Inspector's credentials were shown, and business cards were provided. The facility's representatives were informed that the inspection purpose with supporting on-site activities was to determine if Standard Printed Circuits, Inc. is in compliance with the General Pretreatment Regulations for Existing and New Sources of Pollution in 40 CFR Part 403, the Electroplating Point Source: Subpart H - Printed Circuit Board in 40 CFR Part 413.84(b), and the Village of Sherburne Wastewater Treatment Plant 2022 Standard Industrial User Discharge Permit. Supporting on-site activities consist of collecting samples of the pretreated process wastewater effluent at the monitoring location, observing and evaluating the monitoring location, observing and evaluating the facility's sampling protocol, touring and evaluating Page 5 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 the manufacturing operation process, touring the On-Site Pretreatment System, reviewing and evaluating Microbac Laboratories, Inc. chain-of-custody, sample containers, sample preservation and holding time; and their analytical data, as well as interviewing the facility's representatives. The facility's representatives were briefed on the inspection activities throughout the inspection and during the closing conference. On-site sample results and concerns discovered during the inspection were communicated and shown to the facility representatives so that they understand their responsibilities to comply with the federal regulations, as well as the conditions and limitations set forth in the Village of Sherburne Wastewater Treatment Plant 2022 Standard Industrial User Discharge Permit. 5.0 ANALYTICAL RESULTS Standard Printed Circuits, Inc. Wednesday, February 23, 2022 Parameter Units 40 CFR Part 413.84(b) SIU Permit Limit EPA Result Flow GPD <10,000 ---- 481 Cadmium (Cd) mg/l 1.2 1.00 (Daily Max.) U Chromium (Cr) mg/l ---- 2.00 (Daily Max.) U Copper (Cu) mg/l ---- 5.00 (Daily Max.) 1.31 Lead (Pb) mg/l 0.6 ---- 0.0657 Nickel (Ni) mg/l ---- 2.00 (Daily Max.) U Cyanide, Amendable to Cl2 mg/l 5.0 ---- U pH SU =/> 5.0 >6.0 - <9.0 8.17 Temperature C (F) </= 40 (104) ---- 15 O&G mg/l Cause for interference 50.00 (Daily Max.) U TTO mg/l 4.57 ---- U VOAs mg/l ---- ---- U J NVOAs mg/l ---- ---- U L Pesticides/PCBs mg/l ---- ---- U Notes: U- The analyte was not detected at or above the Reporting Limit. J- The identification of the analyte is acceptable; the reported value is an estimate. L- The identification of the analyte is acceptable; the reported value may be biased low. 6.0 FINDINGS 6.1 Sampling Result Findings The EPA analytical results obtained during this inspection are within the acceptable limits. Page 6 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 6.2 Inspection Findings In addition to the sampling, an inspection of the facility operation was conducted as discussed in Section 4.2 above. During this inspection the following observations were noted which may contravene the requirements of the permit or the applicable regulations: 6.2.1 Composite sample is manually collected through-out the workday. Each manually grabbed sample aliquot is collected every hour is transferred into the four clear glass jugs. At the end of the workday, the four clear glass jugs would be considered as an 8-hour manually composited sample. During the sampling process, the clear glass jugs are left on the ground between the Lamella clarifier and the monitoring tank unrefrigerated. According to footnote #2 of Table II - Required Containers, Preservation Techniques, and Holding Times under 40 CFR Part 136, it states, "For a composite sample collected with an automated sample (e.g. using a 24-hour composite sample; see 40 CFR 122.21(g)(7)(i) or 40 CFR part 403, appendix E), refrigerate the sample at </= 6C during collection unless specified otherwise in this table II or in the method(s)." 6.2.2 According to the Microbac Laboratory analytical package dated Thursday, June 10, 2021, compliance pH sample was collected on April 30th and analyzed on May 6th. This is incorrect. According to 40 CFR Part 136 Table II - Required Containers, Preservation Techniques, and Holding Times, hydrogen ion (pH) must be "analyze within 15 minutes." 6.2.3 Temperature is not being monitored. According to the General Pretreatment Regulations for New and Existing Sources under 40 CFR Part 403.5(b)(5), it states, "... in no case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40C (104F) unless the Approval Authority, upon request of the POTW, approves alternate temperature limit." Furthermore, in accordance with 40 CFR Part 136 Table II - Required Containers, Preservation Techniques, and Holding Times, temperature must be "analyzed within 15 minutes." 7.0 ATTACHMENTS Attachment #1. The facility layout shows where operation processes are located. Attachment #2. On-Site Pretreatment System treats process wastewater before discharging into the Village of Sherburne sewer collection system. Attachment #3. Samples with the chain of custody were checked into the USEPA Region 2 Laboratory on Thursday, February 24, 2022. Attachment #4. The USEPA Analytical Data Package for the Standard Printed Circuits, Inc. sampling inspection was received on March 15, 2022. Page 7 of 8 Standard Printed Circuits, Inc. 44 S. Main St., Sherburne Permit No.: NYP080120 Insp. Date: February 23, 2022 8.0 PHOTOGRAPHS Photo #1. Generated process wastewater is directed into the final sump pit in the waste treatment room before pumping into Equalization Tank #1. Photo #2. Compliance samples are collected of the pretreated effluent in the Discharge Tank. Page 8 of 8 Standard Printed Circuits, Inc.; 44 S. Main St., Sherburne Inspection Date: February 23, 2022 Permit No.: NYP080120 7.0 Attachments ~AWa~!1flqJ~qs ~-~3 `~2~~D P~2-'d ~ ---- 7 IE~JL 4 ~I 1! W)V~4) p p U8!~ ~G ~uau4e~1ja~seM wco~ ~ Attachment #1. Process operations and departments are shown on the facility layout. Attachment #2. Generated process wastewater is pretreated by the On-Site Pretreatment System before discharging into the sewer collection system. r! t A 1. - 41 4- I II I A I I I I cctQfl ~ Attachment #3. Samples were submitted to the USEPA Region 2 Laboratory on Thursday, February 24, 2022. US EPA REGION 2 LABORATORY CHAIN OF CUSTODY! FIELD DATA FORM Page _1_ of -.L pages SURVEY NAME & LOCALITY PROGRAM: SF 0 : Decision Unit Code Y206 Ipermlt#: _. _NYP080120 __ LAB 101 FIELD 10 RCRAD I0210 oo z -; rri'"' ::00 Standard Printed Circuits, Inc, SITE 10 RCRAENF D 0307 NPDES g B304 OPERABLE SDWA D C215 UNIT AM D B224 _ CAA 0 A305 DESCRIPTION & INSTRUCTIONS s:: CHECK IF ESTIMATED CONCENTRATIONS, ~::0 SPLIT SAMPLE LL-IMITS, INCLUDING LOCATION, SPECIAL REPORTING PROJECT LEADER Thuan Tran PROGRAM RESULTS CODE _ TSCA D L306 00 D B253 FIFRA D CRIMINAL ENF D ~~ativel I Collection Time (24hr clock) Collection (circle) 11111111111111 Date ~ Begin I End mm/dd/yy .~~.~~.~~.~.!.~.9.".,:?.~.i..~~.~.~.~"."..~eJE""~..",.~~l!.::" ~ "." "" " _..,,~L?'.?'.9..~~,,~'~p.'?.I!.~.~~.~:!'~".~~.~.".~".."I"..~~..:~~.~."s:..~~"p'._.~~~.!..~."".,g,(,:,,.,~,".".,,!,,"..,, ,,,.,.,,..,,,,.,,.,.,,,,.,,,,~..~ .~":.9...9:..~.:~.~~.'.:"."~,.,?.!?,,,,~.1.?g.??. Ag 1, 250-ml plastic bottle: Cyanide* 8-Hr Camp -0 I [2( 05 8:00AM :3:30PM 2/23/2022 ;"".~_""."~."'".".-"";.".":".".."';.'"."~" ,.,.~,., _"-.J. "=...". r]~:g=~~~~~~~~=~=:=;~-;~~~~ Pretreated Discharge - Grab g "1A""".. ""..".. ",,,,,,_ ,,,,3,,","",,1-""liter" a"m"..".b.".e."r"." ja"'rs:"".."N"..V".""OA"s.""." ..,,""-",,,","'.G"'-"'r'a'''b'''-'C''''a''m''' p 12 A 3, 40-ml glass vials: VOA Grab #1 .." "."".."-'_-02,."" V"I" "_ - 0.:3 c( ""." ""." ,," "." o" 8"'-:""3.""5.""A-" M..":".2:":4_0.."P_M""."""" ""2.."/"2"3.."/"20"2"."2"."". 0 6:35AM 2/23/2022 ~ - ,...../ M " ,.""_" " _ ".,,_"_,,_, ,~"'_, , , _ _ "'""." A , ~ ~ ,, " ~".' _ _ "._'""""""'.' 3, 40-ml _' _ _"~._ glass " ,_._ vials: _ _ VOA _ _ "' " Grab #3 _ _ _,.,_ _ ---Q~ " , ,-'::.- ~ " " 0 I ~:40PM 2/23/2022 ~ ~- - - _ " _ - - ~~;;:-~:=.F;;~~~~~~-=~~~~2~~-~~2 A 3, 1-L WM clear glasses: O&G Grab -o~ ct 03 ~:40PM 2/23/2022 NOTES: Metals* : Cd, Cr, Cu, Pb & Ni. Cyanide*: Amendable to Chlorine 1~~ Preservative Added & Checked O=ice 7=FAS 1=H2S04 pH<2 8=ZnAc 2=HN03 pH<2 9=NaOH pH>12 3=HCI pH<2 10=NH4CI 4=Na2S203 5=NaOH pH>9 6=Ascorbic Acid ime ate A=aqueous B=aqueous C=soil D=sediment E=sludge atrtx: (chlorinated) F=multiphasic G=solvent H=biota I=oil J=other Survey Complete? Y D revised 10/25/2004 Attachment #4. The USEPA Analytical Data Package was received on March 15, 2022. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory 2890 Woodbridge Avenue Edison , New Jersey 08837 732-906-6886 Phone 732-906-6165 Fax March 14, 2022 Thuan Tran Monitoring & Assessment Branch LSASD/MAB Edison, NJ 08837 RE: Standard Printed Circuits, Inc - 2202010 Enclosed are the results of analyses for samples received by the laboratory on 02/24/2022. The signature below reflects the laboratory's approval of the reported results. If you have any questions concerning this report, please refer to Project Number 2202010 and contact the laboratory. Sincerely, James Ferretti Acting Chief, LSASD/LB Project Narrative: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 The National Environmental Laboratory Accreditation Conference Institute (TNI) is a voluntary environmental laboratory accreditation association of State and Federal agencies. TNI established and promoted a National Environmental Laboratory Accreditation Program (NELAP) that provides a uniform set of standards for the generation of environmental data that are of known and defensible quality. The EPA Region 2 Laboratory is NELAP accredited. The Laboratory tests that are accredited have met all the requirements established under the TNI Standards. Condition Comments None Comment(s): The "Sample Analysis Date and Time" is included in the results section for any analyte with a prescribed holding time of 72 hours or less. Sample 2202010-01 was analyzed for Cyanide Amenable To Chlorination. The result of the first analysis was a negative value. This was due to a higher cyanide result for the chlorinated aliquot than for the unchlorinated aliquot. A second aliquot of sample was distilled and analyzed for Cyanide Amenable To Chlorination and a negative value was obtained for this aliquot as well. Method 4500-CN- G states "Some unidentified organic chemicals may oxidize or form breakdown products during chlorination, giving higher results for cyanide after chlorination than before chlorination. This may lead to a negative value for cyanides amenable to chlorination after distillation for wastes from, for example, the steel industry, petroleum refining, and pulp and paper processing. Where such interferences are encountered use Method 4500-CN- I for determining dissociable cyanide." The Laboratory reported the "negative" result for the Cyanide Amenable To Chlorination as not detected at a reporting limit of 5 ug/L. Data Qualifier(s): U- The analyte was not detected at or above the Reporting Limit. J- The identification of the analyte is acceptable; the reported value is an estimate. K- The identification of the analyte is acceptable; the reported value may be biased high. L- The identification of the analyte is acceptable; the reported value may be biased low. U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 1 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NJ- There is presumptive evidence that the analyte is present; the analyte is reported as a tentative identification. The reported value is an estimate. Reporting Limit(s): The Laboratory was able to achieve the standard laboratory reporting limits, where applicable, for each analyte requested except for the following analyte(s): NVOA GCMS The reporting level of 5.00 ug/L was raised to 10 ug/L for the following analyte(s): Pentachlorophenol for the following samples: 2202010-02 The reporting level of 5.00 ug/L was raised to 30 ug/L for the following analyte(s): 4,6-Dinitro-2-Methylphenol for the following samples: 2202010-02 The reporting level of 5.00 ug/L was raised to 50 ug/L for the following analyte(s): 2,4-Dinitrophenol for the following samples: 2202010-02 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 2 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 SUMMARY REPORT FOR SAMPLES Field ID Pretreated Discharge - Comp Pretreated Discharge - G-C Pretreated Discharge - Grab#3 TRIP BLANK Lab Composite-Grab#1 thru Grab#3 Laboratory ID 2202010-01 2202010-02 2202010-05 2202010-06 2202010-07 Matrix Aqueous Aqueous Aqueous Aqueous Aqueous Date Sampled 02/23/2022 15:30 02/23/2022 14:40 02/23/2022 14:40 02/23/2022 09:38 02/24/2022 00:00 Date Received 02/24/2022 14:00 02/24/2022 14:00 02/24/2022 14:00 02/24/2022 14:00 02/24/2022 14:00 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 3 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analysis 608.3 Pesticides/PCBs-NPDES 624.1 VOA EPA-NPDES 625.1 SVOA NPDES Cyanide Amenable To Chlorination Metals ICP TAL NPDES/DW Oil & Grease SUMMARY REPORT FOR METHODS Method EPA 608.3 SOP C-91 Rev 4.3 EPA 624.1 SOP C-89 Rev 3.6 EPA 625.1 SOP C-90 Rev 3.8 EPA 335.4 SOP C-28 Rev 2.7 EPA 200.7 SOP C-109 Rev 3.6 EPA 1664A SOP C-126 Rev 1.6 Certification NELAP NELAP NELAP NELAP NELAP Matrix Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 4 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Field ID: Pretreated Discharge - Comp Metals ICP Cadmium Chromium Copper Lead Nickel Sanitary Cyanide Amenable To Chlorination Field ID: Pretreated Discharge - G-C NVOA GCMS Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene Result Qualifier Reporting Limit Units Batch Sample ID: 2202010-01 Date and Time of Analysis* --- U 3.00 ug/L B202100 --- U 5.00 ug/L B202100 1310 10.0 ug/L B202100 65.7 8.00 ug/L B202100 --- U 20.0 ug/L B202100 --- U 10.0 ug/L B202098 Sample ID: 2202010-02 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U 5.15 ug/L B202101 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 5 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Field ID: Pretreated Discharge - G-C NVOA GCMS 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine Result Qualifier Reporting Limit Units Batch Sample ID: 2202010-02 Date and Time of Analysis* --- U 5.15 ug/L B202101 --- U 51.5 ug/L B202101 --- U 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 30.9 ug/L B202101 --- U 5.15 ug/L B202101 --- U L 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 5.15 ug/L B202101 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 6 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Field ID: Pretreated Discharge - G-C NVOA GCMS N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Pest/PCBs GC alpha-BHC gamma-BHC (Lindane) beta-BHC delta-BHC Heptachlor Aldrin Heptachlor epoxide Endosulfan I 4,4'-DDE Dieldrin Endrin 4,4'-DDD Endosulfan II 4,4'-DDT Endrin aldehyde Endosulfan sulfate Toxaphene Chlordane Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Result Qualifier Reporting Limit Units Batch Sample ID: 2202010-02 Date and Time of Analysis* --- U 5.15 ug/L B202101 --- U 10.3 ug/L B202101 --- U L 5.15 ug/L B202101 --- U 5.15 ug/L B202101 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.002 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.005 ug/L B202103 --- U 0.188 ug/L B202103 --- U 0.062 ug/L B202103 --- U 0.031 ug/L B202103 --- U 0.062 ug/L B202103 --- U 0.031 ug/L B202103 --- U 0.031 ug/L B202103 --- U 0.031 ug/L B202103 --- U 0.031 ug/L B202103 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 7 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Field ID: Pretreated Discharge - G-C Pest/PCBs GC Aroclor 1260 Field ID: Pretreated Discharge - Grab#3 GC - Sanitary Oil & Grease Field ID: TRIP BLANK VOA GCMS Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Result Qualifier Reporting Limit Units Batch Sample ID: 2202010-02 Date and Time of Analysis* --- U 0.031 ug/L B202103 Sample ID: 2202010-05 --- U 6.70 mg/L B202095 Sample ID: 2202010-06 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 8 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Result Qualifier Reporting Limit Units Batch Date and Time of Analysis* Field ID: TRIP BLANK VOA GCMS Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Field ID: Lab Composite-Grab#1 thru Grab#3 VOA GCMS Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane Sample ID: 2202010-06 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 Sample ID: 2202010-07 --- U 5.00 ug/L B202099 --- U J 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U J 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 9 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Analyte Field ID: Lab Composite-Grab#1 thru Grab#3 VOA GCMS cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Result Qualifier Reporting Limit Units Batch Sample ID: 2202010-07 Date and Time of Analysis* --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 --- U 5.00 ug/L B202099 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 10 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 VOA GCMS - Quality Control Analyte Batch B202099 Blank (B202099-BLK1) Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Surrogate: 1,4-Difluorobenzene Surrogate: 2-Bromo-1-Chloropropane Surrogate: 1,4-Dichlorobutane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L ND ug/L 100.0 ND ug/L 100.0 106 ug/L 100.0 99.4 60-140 99.1 60-140 106 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 11 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 VOA GCMS - Quality Control Analyte Batch B202099 LCS (B202099-BS1) Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Surrogate: 1,4-Difluorobenzene Surrogate: 2-Bromo-1-Chloropropane Surrogate: 1,4-Dichlorobutane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 71.8 ug/L 50.00 144 19-205 54.6 ug/L 50.00 109 5-195 62.6 ug/L 50.00 125 15-185 65.4 ug/L 50.00 131 40-160 57.4 ug/L 50.00 115 50-150 60.4 ug/L 50.00 121 50-150 56.5 ug/L 50.00 113 60-140 55.8 ug/L 50.00 112 60-140 57.2 ug/L 50.00 114 70-130 56.7 ug/L 50.00 113 70-130 57.8 ug/L 50.00 116 70-135 55.6 ug/L 50.00 111 70-130 57.0 ug/L 50.00 114 70-130 53.6 ug/L 50.00 107 70-130 55.0 ug/L 50.00 110 65-135 58.0 ug/L 50.00 116 65-135 58.5 ug/L 50.00 117 35-165 54.2 ug/L 50.00 108 65-135 56.0 ug/L 50.00 112 25-175 55.6 ug/L 50.00 111 70-130 58.8 ug/L 50.00 118 50-150 54.4 ug/L 50.00 109 70-130 53.3 ug/L 50.00 107 70-130 53.8 ug/L 50.00 108 70-135 55.8 ug/L 50.00 112 65-135 56.3 ug/L 50.00 113 60-140 49.8 ug/L 50.00 99.6 70-130 52.8 ug/L 50.00 106 60-140 55.4 ug/L 50.00 111 70-130 53.7 ug/L 50.00 107 65-135 53.7 ug/L 50.00 107 65-135 99.3 ug/L 100.0 99.3 60-140 104 ug/L 100.0 104 60-140 103 ug/L 100.0 103 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 12 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 VOA GCMS - Quality Control Analyte Batch B202099 LCS Dup (B202099-BSD1) Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Surrogate: 1,4-Difluorobenzene Surrogate: 2-Bromo-1-Chloropropane Surrogate: 1,4-Dichlorobutane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 72.4 ug/L 50.00 145 19-205 0.693 20 54.5 ug/L 50.00 109 5-195 0.147 20 64.9 ug/L 50.00 130 15-185 3.53 20 67.1 ug/L 50.00 134 40-160 2.61 20 58.5 ug/L 50.00 117 50-150 1.90 20 62.0 ug/L 50.00 124 50-150 2.56 20 57.3 ug/L 50.00 115 60-140 1.41 20 56.4 ug/L 50.00 113 60-140 1.12 20 58.8 ug/L 50.00 118 70-130 2.84 20 58.1 ug/L 50.00 116 70-130 2.42 20 58.4 ug/L 50.00 117 70-135 1.15 20 56.7 ug/L 50.00 113 70-130 1.98 20 58.6 ug/L 50.00 117 70-130 2.75 20 53.6 ug/L 50.00 107 70-130 0.00 20 56.0 ug/L 50.00 112 65-135 1.69 20 59.9 ug/L 50.00 120 65-135 3.09 20 59.1 ug/L 50.00 118 35-165 1.00 20 53.8 ug/L 50.00 108 65-135 0.667 20 56.8 ug/L 50.00 114 25-175 1.47 20 56.6 ug/L 50.00 113 70-130 1.75 20 59.1 ug/L 50.00 118 50-150 0.560 20 56.1 ug/L 50.00 112 70-130 2.91 20 55.6 ug/L 50.00 111 70-130 4.15 20 55.0 ug/L 50.00 110 70-135 2.15 20 56.9 ug/L 50.00 114 65-135 1.94 20 57.4 ug/L 50.00 115 60-140 1.90 20 49.8 ug/L 50.00 99.6 70-130 0.0602 20 52.9 ug/L 50.00 106 60-140 0.227 20 55.1 ug/L 50.00 110 70-130 0.615 20 54.5 ug/L 50.00 109 65-135 1.44 20 54.2 ug/L 50.00 108 65-135 0.909 20 99.2 ug/L 100.0 99.2 60-140 104 ug/L 100.0 104 60-140 103 ug/L 100.0 103 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 13 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 VOA GCMS - Quality Control Analyte Batch B202099 Matrix Spike (B202099-MS1) Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Surrogate: 1,4-Difluorobenzene Surrogate: 2-Bromo-1-Chloropropane Surrogate: 1,4-Dichlorobutane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2202010-07 53.4 ug/L 52.0 ug/L 51.5 ug/L 58.9 ug/L 57.5 ug/L 56.6 ug/L 54.3 ug/L 55.3 ug/L 55.5 ug/L 56.7 ug/L 56.1 ug/L 56.4 ug/L 56.5 ug/L 53.3 ug/L 57.4 ug/L 58.2 ug/L 57.3 ug/L 56.6 ug/L 57.0 ug/L 56.9 ug/L 56.5 ug/L 55.0 ug/L 55.5 ug/L 55.1 ug/L 55.1 ug/L 57.7 ug/L 51.9 ug/L 55.5 ug/L 55.5 ug/L 54.8 ug/L 54.3 ug/L 99.5 ug/L 104 ug/L 104 ug/L 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 50.00 0.00 100.0 100.0 100.0 107 19-273 104 49-251 103 21-242 118 14-230 115 17-181 113 52-234 109 69-221 111 40-160 111 54-156 113 59-155 112 51-138 113 52-162 113 70-140 107 49-155 115 37-151 116 70-157 115 74-210 113 35-155 114 80-227 114 47-150 113 17-183 110 52-150 111 64-148 110 53-149 110 37-160 115 37-162 104 45-169 111 46-157 111 59-156 110 18-190 109 18-190 99.5 60-140 104 60-140 104 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 14 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 VOA GCMS - Quality Control Analyte Batch B202099 Matrix Spike Dup (B202099-MSD1) Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Methylene Chloride Acrylonitrile trans-1,2-Dichloroethene 1,1-Dichloroethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride 1,2-Dichloroethane Benzene Trichloroethene 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene Dibromochloromethane Chlorobenzene Ethylbenzene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Surrogate: 1,4-Difluorobenzene Surrogate: 2-Bromo-1-Chloropropane Surrogate: 1,4-Dichlorobutane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2202010-07 43.9 ug/L 50.00 0.00 87.8 19-273 19.5 28 39.0 ug/L 50.00 0.00 78.0 49-251 28.7 28 44.4 ug/L 50.00 0.00 88.8 21-242 14.7 28 48.2 ug/L 50.00 0.00 96.3 14-230 20.0 28 43.3 ug/L 50.00 0.00 86.7 17-181 28.1 28 44.6 ug/L 50.00 0.00 89.2 52-234 23.7 28 49.4 ug/L 50.00 0.00 98.7 69-221 9.48 28 56.3 ug/L 50.00 0.00 113 40-160 1.83 28 45.8 ug/L 50.00 0.00 91.6 54-156 19.2 28 48.1 ug/L 50.00 0.00 96.1 59-155 16.4 28 49.8 ug/L 50.00 0.00 99.6 51-138 11.8 28 44.8 ug/L 50.00 0.00 89.7 52-162 22.8 28 43.8 ug/L 50.00 0.00 87.6 70-140 25.3 28 50.8 ug/L 50.00 0.00 102 49-155 4.69 28 48.2 ug/L 50.00 0.00 96.3 37-151 17.4 28 47.5 ug/L 50.00 0.00 95.1 70-157 20.1 28 51.0 ug/L 50.00 0.00 102 74-210 11.5 28 51.3 ug/L 50.00 0.00 103 35-155 9.71 28 52.1 ug/L 50.00 0.00 104 80-227 8.91 28 48.1 ug/L 50.00 0.00 96.3 47-150 16.6 28 53.6 ug/L 50.00 0.00 107 17-183 5.38 28 52.6 ug/L 50.00 0.00 105 52-150 4.44 28 43.1 ug/L 50.00 0.00 86.2 64-148 25.2 28 51.5 ug/L 50.00 0.00 103 53-149 6.87 28 48.1 ug/L 50.00 0.00 96.1 37-160 13.6 28 47.6 ug/L 50.00 0.00 95.1 37-162 19.3 28 49.9 ug/L 50.00 0.00 99.7 45-169 4.07 28 54.0 ug/L 50.00 0.00 108 46-157 2.85 28 49.0 ug/L 50.00 0.00 98.0 59-156 12.5 28 48.8 ug/L 50.00 0.00 97.7 18-190 11.5 28 49.4 ug/L 50.00 0.00 98.9 18-190 9.35 28 98.4 ug/L 100.0 98.4 60-140 103 ug/L 100.0 103 60-140 103 ug/L 100.0 103 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 15 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Batch B202101 Blank (B202101-BLK1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit Page 16 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Batch B202101 Blank (B202101-BLK1) Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 LCS (B202101-BS1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L 36.3 ug/L 50.00 ND ug/L 50.00 37.2 ug/L 50.00 35.8 ug/L 50.00 39.7 ug/L 50.00 37.4 ug/L 50.00 48.0 ug/L 50.00 37.5 5.00 ug/L 50.00 38.4 5.00 ug/L 50.00 40.4 5.00 ug/L 50.00 41.4 5.00 ug/L 50.00 45.8 5.00 ug/L 50.00 44.5 5.00 ug/L 50.00 44.3 5.00 ug/L 50.00 41.4 5.00 ug/L 50.00 72.6 60-140 39.6 60-140 74.4 60-140 71.6 60-140 79.3 60-140 74.8 60-140 96.0 60-140 75.0 47-145 76.8 33-145 80.9 27-133 82.9 33-143 91.6 17-163 88.9 24-159 88.5 35-219 82.8 11-162 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 17 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Batch B202101 LCS (B202101-BS1) Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene 41.1 5.00 ug/L 50.00 42.3 5.00 ug/L 50.00 42.0 5.00 ug/L 50.00 39.1 5.00 ug/L 50.00 43.4 5.00 ug/L 50.00 33.3 5.00 ug/L 50.00 41.5 5.00 ug/L 50.00 33.4 5.00 ug/L 50.00 38.4 5.00 ug/L 50.00 38.0 5.00 ug/L 50.00 41.5 5.00 ug/L 50.00 45.2 5.00 ug/L 50.00 44.0 5.00 ug/L 50.00 34.6 5.00 ug/L 50.00 35.6 5.00 ug/L 50.00 34.7 5.00 ug/L 50.00 37.5 5.00 ug/L 50.00 48.3 5.00 ug/L 50.00 44.7 5.00 ug/L 50.00 40.2 5.00 ug/L 50.00 40.3 5.00 ug/L 50.00 39.4 5.00 ug/L 50.00 20.3 5.00 ug/L 50.00 36.3 5.00 ug/L 50.00 35.3 5.00 ug/L 50.00 32.3 5.00 ug/L 50.00 49.3 5.00 ug/L 50.00 36.6 5.00 ug/L 50.00 41.3 5.00 ug/L 50.00 32.9 5.00 ug/L 50.00 18.4 5.00 ug/L 50.00 40.6 5.00 ug/L 50.00 51.0 5.00 ug/L 50.00 39.5 5.00 ug/L 50.00 28.6 5.00 ug/L 50.00 82.1 17-168 84.6 33-227 84.0 26-137 78.2 59-121 86.8 39-171 66.6 21-133 83.0 54-120 66.8 44-142 76.7 37-144 76.0 39-135 83.0 32-120 90.3 39-139 88.0 50-158 69.1 21-191 71.1 60-120 69.5 23-134 75.1 29-182 96.7 38-262 89.4 17-181 80.4 53-127 80.6 22-147 78.8 25-158 40.7 9-132 72.7 33-184 70.6 12-158 64.5 36-166 98.5 8-158 73.1 38-152 82.7 60-115 65.8 31-114 36.7 28-120 81.2 1-120 102 4-146 78.9 35-152 57.3 24-120 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit Page 18 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Batch B202101 LCS (B202101-BS1) Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 LCS Dup (B202101-BSD1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 29.6 5.00 ug/L 50.00 28.5 5.00 ug/L 50.00 40.8 5.00 ug/L 50.00 36.6 5.00 ug/L 50.00 24.7 5.00 ug/L 50.00 38.2 5.00 ug/L 50.00 47.2 5.00 ug/L 50.00 44.3 5.00 ug/L 50.00 16.7 5.00 ug/L 50.00 41.6 5.00 ug/L 50.00 36.4 ug/L 50.00 17.6 ug/L 50.00 34.6 ug/L 50.00 31.7 ug/L 50.00 41.8 ug/L 50.00 37.6 ug/L 50.00 44.3 ug/L 50.00 35.7 5.00 ug/L 50.00 36.9 5.00 ug/L 50.00 41.6 5.00 ug/L 50.00 48.8 5.00 ug/L 50.00 48.5 5.00 ug/L 50.00 48.3 5.00 ug/L 50.00 48.0 5.00 ug/L 50.00 44.9 5.00 ug/L 50.00 48.4 5.00 ug/L 50.00 45.2 5.00 ug/L 50.00 43.6 5.00 ug/L 50.00 38.7 5.00 ug/L 50.00 47.6 5.00 ug/L 50.00 33.2 5.00 ug/L 50.00 42.3 5.00 ug/L 50.00 33.4 5.00 ug/L 50.00 59.3 15-76 57.0 40-120 81.7 21-196 73.2 35-180 49.4 17-127 76.3 43-230 94.4 79-139 88.6 14-176 33.5 5-120 83.2 52-120 72.9 60-140 35.3 60-140 69.2 60-140 63.3 60-140 83.5 60-140 75.2 60-140 88.6 60-140 71.3 47-145 5.00 30 73.7 33-145 4.09 30 83.2 27-133 2.85 30 97.7 33-143 16.4 30 96.9 17-163 5.69 30 96.5 24-159 8.20 30 95.9 35-219 7.98 30 89.8 11-162 8.11 30 96.7 17-168 16.3 30 90.4 33-227 6.56 30 87.2 26-137 3.81 30 77.3 59-121 1.13 30 95.1 39-171 9.10 30 66.3 21-133 0.512 30 84.6 54-120 1.93 30 66.7 44-142 0.150 30 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 19 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits Batch B202101 LCS Dup (B202101-BSD1) 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol 38.7 5.00 ug/L 50.00 39.0 5.00 ug/L 50.00 41.0 5.00 ug/L 50.00 47.6 5.00 ug/L 50.00 45.0 5.00 ug/L 50.00 36.4 5.00 ug/L 50.00 34.0 5.00 ug/L 50.00 36.6 5.00 ug/L 50.00 39.1 5.00 ug/L 50.00 55.6 5.00 ug/L 50.00 47.0 5.00 ug/L 50.00 40.9 5.00 ug/L 50.00 40.6 5.00 ug/L 50.00 38.5 5.00 ug/L 50.00 20.4 5.00 ug/L 50.00 37.2 5.00 ug/L 50.00 37.2 5.00 ug/L 50.00 33.2 5.00 ug/L 50.00 60.0 5.00 ug/L 50.00 37.1 5.00 ug/L 50.00 41.2 5.00 ug/L 50.00 34.1 5.00 ug/L 50.00 18.8 5.00 ug/L 50.00 42.6 5.00 ug/L 50.00 59.4 5.00 ug/L 50.00 40.4 5.00 ug/L 50.00 30.1 5.00 ug/L 50.00 30.8 5.00 ug/L 50.00 29.9 5.00 ug/L 50.00 41.4 5.00 ug/L 50.00 37.8 5.00 ug/L 50.00 25.4 5.00 ug/L 50.00 39.1 5.00 ug/L 50.00 48.4 5.00 ug/L 50.00 48.0 5.00 ug/L 50.00 77.5 37-144 78.1 39-135 82.1 32-120 95.2 39-139 90.1 50-158 72.9 21-191 68.1 60-120 73.1 23-134 78.2 29-182 111 38-262 94.0 17-181 81.7 53-127 81.2 22-147 77.1 25-158 40.9 9-132 74.5 33-184 74.4 12-158 66.4 36-166 120 8-158 74.1 38-152 82.4 60-115 68.2 31-114 37.5 28-120 85.1 1-120 119 4-146 80.8 35-152 60.2 24-120 61.5 15-76 59.9 40-120 82.7 21-196 75.7 35-180 50.7 17-127 78.2 43-230 96.9 79-139 96.0 14-176 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD 0.986 2.67 1.07 5.20 2.34 5.29 4.37 5.11 4.10 14.0 4.97 1.65 0.643 2.23 0.540 2.45 5.24 2.87 19.6 1.41 0.339 3.64 2.21 4.67 15.1 2.28 4.90 3.68 4.89 1.24 3.30 2.64 2.41 2.61 8.06 RPD Limit 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 Page 20 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Batch B202101 LCS Dup (B202101-BSD1) Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Matrix Spike (B202101-MS1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 17.2 5.00 ug/L 50.00 42.9 5.00 ug/L 50.00 37.9 ug/L 50.00 18.2 ug/L 50.00 34.2 ug/L 50.00 31.5 ug/L 50.00 42.0 ug/L 50.00 38.5 ug/L 50.00 52.3 ug/L 50.00 34.4 5-120 2.59 30 85.8 52-120 3.08 30 75.8 60-140 36.3 60-140 68.3 60-140 63.1 60-140 84.1 60-140 77.0 60-140 105 60-140 Source: 2202010-02 37.6 5.15 ug/L 38.0 5.15 ug/L 43.8 5.15 ug/L 47.5 5.15 ug/L 45.8 5.15 ug/L 45.2 5.15 ug/L 55.0 5.15 ug/L 44.2 5.15 ug/L 46.6 5.15 ug/L 53.1 5.15 ug/L 43.1 5.15 ug/L 46.0 5.15 ug/L 55.8 5.15 ug/L 33.7 5.15 ug/L 45.8 5.15 ug/L 32.4 5.15 ug/L 40.4 5.15 ug/L 41.2 5.15 ug/L 41.5 5.15 ug/L 50.2 5.15 ug/L 42.0 5.15 ug/L 36.0 5.15 ug/L 36.6 5.15 ug/L 35.1 5.15 ug/L 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 72.9 47-145 73.7 33-145 85.0 27-133 92.2 33-143 88.9 17-163 87.6 24-159 107 35-219 85.8 11-162 90.4 17-168 103 33-227 83.5 26-137 89.2 59-121 108 39-171 65.3 21-133 88.9 54-120 62.8 44-142 78.4 37-144 80.0 39-135 80.5 32-120 97.4 39-139 81.5 50-158 69.9 21-191 71.0 60-120 68.0 23-134 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 21 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Batch B202101 Matrix Spike (B202101-MS1) 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Source: 2202010-02 37.9 5.15 ug/L 41.1 5.15 ug/L 47.1 5.15 ug/L 48.2 5.15 ug/L 41.7 5.15 ug/L 47.7 5.15 ug/L 19.0 5.15 ug/L 36.6 5.15 ug/L 32.8 5.15 ug/L 32.8 5.15 ug/L 62.2 5.15 ug/L 41.4 5.15 ug/L 47.4 5.15 ug/L 45.2 5.15 ug/L 34.7 5.15 ug/L 47.6 5.15 ug/L 55.3 5.15 ug/L 45.7 5.15 ug/L 30.6 5.15 ug/L 29.7 5.15 ug/L 29.7 5.15 ug/L 38.0 5.15 ug/L 36.4 5.15 ug/L 21.4 5.15 ug/L 37.2 5.15 ug/L 46.6 5.15 ug/L 49.2 5.15 ug/L 18.1 5.15 ug/L 42.1 5.15 ug/L 32.5 ug/L 18.7 ug/L 36.1 ug/L 35.0 ug/L 42.7 ug/L 40.2 ug/L 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 ND 51.55 51.55 51.55 51.55 51.55 51.55 73.5 29-182 79.8 38-262 91.3 17-181 93.5 53-127 80.9 22-147 92.5 25-158 36.8 9-132 70.9 33-184 63.7 12-158 63.6 36-166 121 8-158 80.3 38-152 91.9 61-106 87.7 31-114 67.3 28-120 92.4 1-120 107 4-146 88.7 35-152 59.3 24-120 57.7 15-76 57.7 40-120 73.7 21-196 70.7 35-180 41.5 17-127 72.2 43-230 90.4 79-139 95.4 14-176 35.2 5-120 81.6 52-120 63.1 60-140 36.3 60-140 69.9 60-140 67.8 60-140 82.8 60-140 78.1 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit Page 22 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Batch B202101 Matrix Spike (B202101-MS1) Surrogate: Chrysene-D12 Matrix Spike Dup (B202101-MSD1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Source: 2202010-02 49.3 ug/L Source: 2202010-02 39.4 5.21 ug/L 39.5 5.21 ug/L 45.8 5.21 ug/L 50.6 5.21 ug/L 47.0 5.21 ug/L 47.4 5.21 ug/L 54.7 5.21 ug/L 44.9 5.21 ug/L 49.6 5.21 ug/L 52.7 5.21 ug/L 45.6 5.21 ug/L 46.7 5.21 ug/L 57.4 5.21 ug/L 35.3 5.21 ug/L 46.9 5.21 ug/L 34.0 5.21 ug/L 41.7 5.21 ug/L 41.8 5.21 ug/L 41.9 5.21 ug/L 52.6 5.21 ug/L 44.0 5.21 ug/L 38.2 5.21 ug/L 38.2 5.21 ug/L 36.1 5.21 ug/L 39.2 5.21 ug/L 44.0 5.21 ug/L 49.1 5.21 ug/L 49.1 5.21 ug/L 42.5 5.21 ug/L 48.2 5.21 ug/L 20.7 5.21 ug/L 37.9 5.21 ug/L 51.55 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 52.08 ND 95.6 60-140 75.6 47-145 4.67 75.8 33-145 3.76 88.0 27-133 4.48 97.1 33-143 6.17 90.2 17-163 2.55 91.1 24-159 4.89 105 35-219 0.550 86.2 11-162 1.52 95.3 17-168 6.29 101 33-227 0.648 87.5 26-137 5.71 89.7 59-121 1.64 110 39-171 2.70 67.8 21-133 4.82 90.1 54-120 2.31 65.3 44-142 4.94 80.0 37-144 3.03 80.3 39-135 1.34 80.4 32-120 0.912 101 39-139 4.62 84.5 50-158 4.65 73.3 21-191 5.79 73.3 60-120 4.31 69.3 23-134 2.90 75.2 29-182 3.32 84.4 38-262 6.64 94.2 17-181 4.18 94.2 53-127 1.85 81.6 22-147 1.95 92.6 25-158 1.17 39.7 9-132 8.61 72.8 33-184 3.71 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 Page 23 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 NVOA GCMS - Quality Control Analyte Batch B202101 Matrix Spike Dup (B202101-MSD1) Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2202010-02 34.6 5.21 ug/L 52.08 ND 66.5 12-158 5.34 24 34.6 5.21 ug/L 52.08 ND 66.4 36-166 5.28 24 67.2 5.21 ug/L 52.08 ND 129 8-158 7.64 24 45.6 5.21 ug/L 52.08 ND 87.6 38-152 9.71 24 48.7 5.21 ug/L 52.08 ND 93.5 61-106 2.81 24 45.8 5.21 ug/L 52.08 ND 87.8 31-114 1.24 24 34.4 5.21 ug/L 52.08 ND 66.1 28-120 0.823 24 49.9 5.21 ug/L 52.08 ND 95.7 1-120 4.63 24 59.5 5.21 ug/L 52.08 ND 114 4-146 7.37 24 46.7 5.21 ug/L 52.08 ND 89.7 35-152 2.16 24 32.6 5.21 ug/L 52.08 ND 62.6 24-120 6.51 24 28.3 5.21 ug/L 52.08 ND 54.4 15-76 4.82 24 31.0 5.21 ug/L 52.08 ND 59.5 40-120 4.11 24 39.2 5.21 ug/L 52.08 ND 75.3 21-196 3.18 24 38.1 5.21 ug/L 52.08 ND 73.1 35-180 4.40 24 23.3 5.21 ug/L 52.08 ND 44.7 17-127 8.36 24 39.1 5.21 ug/L 52.08 ND 75.1 43-230 4.92 24 47.2 5.21 ug/L 52.08 ND 90.6 79-139 1.35 24 49.9 5.21 ug/L 52.08 ND 95.9 14-176 1.52 24 18.3 5.21 ug/L 52.08 ND 35.1 5-120 0.922 24 44.6 5.21 ug/L 52.08 ND 85.6 52-120 5.84 24 34.9 ug/L 52.08 67.1 60-140 19.5 ug/L 52.08 37.5 60-140 38.7 ug/L 52.08 74.2 60-140 37.3 ug/L 52.08 71.6 60-140 45.4 ug/L 52.08 87.1 60-140 43.6 ug/L 52.08 83.7 60-140 54.1 ug/L 52.08 104 60-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 24 of 34 Analyte Batch B202103 Blank (B202103-BLK1) alpha-BHC gamma-BHC (Lindane) beta-BHC delta-BHC Heptachlor Aldrin Heptachlor epoxide Endosulfan I 4,4'-DDE Dieldrin Endrin 4,4'-DDD Endosulfan II 4,4'-DDT Endrin aldehyde Methoxychlor Endosulfan sulfate Endrin ketone Toxaphene Chlordane Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 Aroclor 1262 Aroclor 1268 Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U 0.0387 0.0402 0.0287 0.0226 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.025 ug/L 0.005 ug/L 0.005 ug/L 0.188 ug/L 0.062 ug/L 0.031 ug/L 0.062 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.06000 0.06000 0.06000 0.06000 64.5 23-101 67.0 23-101 47.9 25-107 37.6 25-107 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 25 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch B202103 LCS (B202103-BS1) alpha-BHC alpha-BHC [2C] gamma-BHC (Lindane) gamma-BHC (Lindane) [2C] beta-BHC beta-BHC [2C] delta-BHC delta-BHC [2C] Heptachlor Heptachlor [2C] Aldrin Aldrin [2C] Heptachlor epoxide Heptachlor epoxide [2C] Endosulfan I Endosulfan I [2C] 4,4'-DDE 4,4'-DDE [2C] Dieldrin Dieldrin [2C] Endrin Endrin [2C] 4,4'-DDD 4,4'-DDD [2C] Endosulfan II Endosulfan II [2C] 4,4'-DDT 4,4'-DDT [2C] Endrin aldehyde Endrin aldehyde [2C] Endosulfan sulfate Endosulfan sulfate [2C] Surrogate: TCMX Surrogate: TCMX [2C] Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 0.02 0.01 0.01 0.01 0.01 0.01 0.02 0.01 --- U 0.01 0.02 0.01 0.02 0.01 0.01 0.01 0.03 0.03 0.03 0.03 0.04 0.03 0.04 0.03 0.03 0.03 0.04 0.02 0.03 0.03 0.04 0.03 0.0382 0.0401 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L ug/L ug/L 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.06000 0.06000 78.6 37-140 68.1 37-140 75.0 32-140 60.9 32-140 67.5 17-147 71.8 17-147 91.2 19-140 72.1 19-140 34-140 47.9 34-140 82.0 42-140 73.2 42-140 104 37-142 67.0 37-142 64.2 45-153 72.6 45-153 81.9 30-145 67.3 30-145 80.8 36-146 74.3 36-146 91.8 30-147 80.7 30-147 88.6 31-141 76.3 31-141 77.9 50-202 68.1 50-202 92.4 25-160 61.0 25-160 83.0 10-154 75.7 10-154 87.8 26-144 74.3 26-144 63.7 23-101 66.9 23-101 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 26 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch B202103 LCS (B202103-BS1) Surrogate: DCB Surrogate: DCB [2C] LCS (B202103-BS2) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] LCS Dup (B202103-BSD1) alpha-BHC alpha-BHC [2C] gamma-BHC (Lindane) gamma-BHC (Lindane) [2C] beta-BHC beta-BHC [2C] delta-BHC delta-BHC [2C] Heptachlor Heptachlor [2C] Aldrin Aldrin [2C] Heptachlor epoxide Heptachlor epoxide [2C] Endosulfan I Endosulfan I [2C] 4,4'-DDE 4,4'-DDE [2C] Dieldrin Dieldrin [2C] Endrin Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 0.0260 0.0217 0.27 0.27 0.29 0.24 0.0522 0.0461 0.0365 0.0284 0.02 0.01 0.01 0.01 0.01 0.02 0.02 0.02 --- U 0.01 0.02 0.02 0.02 0.01 0.01 0.02 0.03 0.03 0.03 0.03 0.04 ug/L 0.06000 ug/L 0.06000 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.2500 0.2500 0.2500 0.2500 0.06000 0.06000 0.06000 0.06000 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.002 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.02000 0.04000 0.04000 0.04000 0.04000 0.04000 43.3 25-107 36.1 25-107 107 50-140 110 50-140 114 8-140 97.0 8-140 87.1 23-101 76.9 23-101 60.8 25-107 47.3 25-107 80.1 37-140 1.86 36 72.8 37-140 6.62 36 74.9 32-140 0.127 39 65.3 32-140 6.97 39 66.9 17-147 0.937 44 77.0 17-147 7.02 44 92.2 19-140 1.11 52 77.7 19-140 7.40 52 34-140 43 50.8 34-140 5.91 43 83.4 42-140 1.78 35 78.2 42-140 6.65 35 101 37-142 2.50 26 67.4 37-142 0.700 26 65.7 45-153 2.37 28 77.8 45-153 6.87 28 84.3 30-145 2.89 35 72.1 30-145 6.87 35 82.7 36-146 2.35 49 79.5 36-146 6.81 49 93.8 30-147 2.24 48 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 27 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch B202103 LCS Dup (B202103-BSD1) Endrin [2C] 4,4'-DDD 4,4'-DDD [2C] Endosulfan II Endosulfan II [2C] 4,4'-DDT 4,4'-DDT [2C] Endrin aldehyde Endrin aldehyde [2C] Endosulfan sulfate Endosulfan sulfate [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] LCS Dup (B202103-BSD2) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Matrix Spike (B202103-MS1) alpha-BHC alpha-BHC [2C] gamma-BHC (Lindane) gamma-BHC (Lindane) [2C] beta-BHC beta-BHC [2C] delta-BHC delta-BHC [2C] Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 0.03 0.04 0.03 0.03 0.03 0.04 0.03 0.03 0.03 0.04 0.03 0.0394 0.0436 0.0285 0.0235 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L 0.005 ug/L ug/L ug/L ug/L ug/L 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04000 0.06000 0.06000 0.06000 0.06000 86.6 30-147 6.96 48 90.3 31-141 1.93 39 81.9 31-141 7.12 39 79.5 50-202 2.08 53 72.8 50-202 6.73 53 94.0 25-160 1.67 42 65.4 25-160 6.99 42 83.5 10-154 0.610 30 81.7 10-154 7.64 30 87.7 26-144 0.0741 38 82.9 26-144 11.0 38 65.7 23-101 72.6 23-101 47.5 25-107 39.1 25-107 0.25 0.26 0.27 0.24 0.0523 0.0463 0.0374 0.0281 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.2500 0.2500 0.2500 0.2500 0.06000 0.06000 0.06000 0.06000 101 50-140 5.04 36 106 50-140 3.59 36 106 8-140 7.46 38 95.3 8-140 1.75 38 87.2 23-101 77.2 23-101 62.4 25-107 46.9 25-107 Source: 2202010-02 0.04 0.005 ug/L 0.03 0.005 ug/L 0.04 0.005 ug/L 0.02 0.005 ug/L --- U 0.005 ug/L 0.03 0.005 ug/L 0.04 0.005 ug/L 0.02 0.005 ug/L 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 92.8 37-140 71.0 37-140 101 32-140 59.6 32-140 17-147 79.9 17-147 92.7 19-140 61.3 19-140 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 28 of 34 Analyte Batch B202103 Matrix Spike (B202103-MS1) Heptachlor Heptachlor [2C] Aldrin Aldrin [2C] Heptachlor epoxide Heptachlor epoxide [2C] Endosulfan I Endosulfan I [2C] 4,4'-DDE 4,4'-DDE [2C] Dieldrin Dieldrin [2C] Endrin Endrin [2C] 4,4'-DDD 4,4'-DDD [2C] Endosulfan II Endosulfan II [2C] 4,4'-DDT 4,4'-DDT [2C] Endrin aldehyde Endrin aldehyde [2C] Endosulfan sulfate Endosulfan sulfate [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2202010-02 0.03 0.005 ug/L 0.02 0.005 ug/L 0.02 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.07 0.010 ug/L 0.04 0.010 ug/L 0.06 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.06 0.010 ug/L 0.07 0.010 ug/L 0.06 0.010 ug/L 0.05 0.010 ug/L 0.04 0.010 ug/L 0.07 0.010 ug/L 0.05 0.010 ug/L 0.0942 ug/L 0.0886 ug/L 0.0945 ug/L 0.0892 ug/L 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.1205 0.1205 0.1205 0.1205 76.0 34-140 60.1 34-140 59.0 42-140 69.1 42-140 77.7 37-142 73.2 37-142 71.6 45-153 84.6 45-153 86.6 30-145 53.4 30-145 73.7 36-146 81.5 36-146 90.7 30-147 89.4 30-147 92.8 31-141 89.8 31-141 87.3 50-202 75.0 50-202 86.7 25-160 69.5 25-160 67.1 10-154 49.4 10-154 84.3 26-144 56.6 26-144 78.2 23-101 73.5 23-101 78.5 25-107 74.1 25-107 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 29 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch B202103 Matrix Spike (B202103-MS2) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Matrix Spike Dup (B202103-MSD1) alpha-BHC alpha-BHC [2C] gamma-BHC (Lindane) gamma-BHC (Lindane) [2C] beta-BHC beta-BHC [2C] delta-BHC delta-BHC [2C] Heptachlor Heptachlor [2C] Aldrin Aldrin [2C] Heptachlor epoxide Heptachlor epoxide [2C] Endosulfan I Endosulfan I [2C] 4,4'-DDE 4,4'-DDE [2C] Dieldrin Dieldrin [2C] Endrin Endrin [2C] 4,4'-DDD 4,4'-DDD [2C] Endosulfan II Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Source: 2202010-02 0.48 0.063 ug/L 0.41 0.063 ug/L 0.53 0.063 ug/L 0.35 0.063 ug/L 0.0894 ug/L 0.0807 ug/L 0.0974 ug/L 0.0784 ug/L Source: 2202010-02 0.04 0.005 ug/L 0.03 0.005 ug/L 0.04 0.005 ug/L 0.03 0.005 ug/L --- U 0.005 ug/L 0.03 0.005 ug/L 0.04 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.02 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.03 0.005 ug/L 0.07 0.010 ug/L 0.04 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.08 0.010 ug/L 0.07 0.010 ug/L 0.08 0.010 ug/L 0.07 0.010 ug/L 0.07 0.010 ug/L 0.5020 ND 0.5020 ND 0.5020 ND 0.5020 ND 0.1205 0.1205 0.1205 0.1205 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.04016 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 95.0 50-140 82.0 50-140 106 8-140 69.0 8-140 74.2 23-101 67.0 23-101 80.9 25-107 65.1 25-107 98.2 37-140 5.70 73.4 37-140 3.32 106 32-140 5.09 77.0 32-140 25.5 17-147 83.7 17-147 4.68 103 19-140 10.6 69.6 19-140 12.7 68.5 34-140 10.4 59.0 34-140 1.75 62.5 42-140 5.75 75.6 42-140 9.09 86.6 37-142 10.8 85.0 37-142 14.9 84.3 45-153 16.4 86.0 45-153 1.58 89.7 30-145 3.48 55.3 30-145 3.54 83.4 36-146 12.3 83.2 36-146 2.09 98.3 30-147 8.06 92.2 30-147 3.09 101 31-141 7.97 91.6 31-141 1.90 84.9 50-202 2.77 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit 36 36 39 39 44 44 52 52 43 43 35 35 26 26 28 28 35 35 49 49 48 48 39 39 53 Page 30 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch B202103 Matrix Spike Dup (B202103-MSD1) Endosulfan II [2C] 4,4'-DDT 4,4'-DDT [2C] Endrin aldehyde Endrin aldehyde [2C] Endosulfan sulfate Endosulfan sulfate [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Matrix Spike Dup (B202103-MSD2) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Batch S203003 Performance Mix (S203003-PEM1) 4,4'-DDE 4,4'-DDE [2C] Endrin Endrin [2C] 4,4'-DDD 4,4'-DDD [2C] 4,4'-DDT 4,4'-DDT [2C] Endrin aldehyde Endrin aldehyde [2C] Endrin ketone Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Source: 2202010-02 0.06 0.010 ug/L 0.08 0.010 ug/L 0.06 0.010 ug/L 0.06 0.010 ug/L 0.04 0.010 ug/L 0.07 0.010 ug/L 0.05 0.010 ug/L 0.0865 ug/L 0.0898 ug/L 0.0988 ug/L 0.0831 ug/L Source: 2202010-02 0.48 0.063 ug/L 0.43 0.063 ug/L 0.51 0.063 ug/L 0.37 0.063 ug/L 0.0796 ug/L 0.0802 ug/L 0.0930 ug/L 0.0735 ug/L 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.08032 ND 0.1205 0.1205 0.1205 0.1205 0.5020 ND 0.5020 ND 0.5020 ND 0.5020 ND 0.1205 0.1205 0.1205 0.1205 76.5 50-202 1.99 93.5 25-160 7.64 74.4 25-160 6.85 70.4 10-154 4.76 52.1 10-154 5.26 90.6 26-144 7.21 58.0 26-144 2.48 71.8 23-101 74.5 23-101 82.0 25-107 69.0 25-107 94.8 50-140 0.285 86.4 50-140 5.31 103 8-140 3.21 74.0 8-140 6.98 66.0 23-101 66.6 23-101 77.2 25-107 61.0 25-107 1.90 ug/L 0-200 1.48 ug/L 0-200 101 ug/L 80.00 126 0-200 89.9 ug/L 80.00 112 0-200 1.32 ug/L 0-200 0.76 ug/L 0-200 99.1 ug/L 80.00 124 0-200 79.1 ug/L 80.00 98.8 0-200 0.48 ug/L 0-200 0.27 ug/L 0-200 1.69 ug/L 0-200 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 RPD Limit 53 42 42 30 30 38 38 36 36 38 38 Page 31 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Pest/PCBs GC - Quality Control Analyte Batch S203003 Performance Mix (S203003-PEM1) Endrin ketone [2C] Surrogate: DCB Surrogate: DCB [2C] Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 1.31 ug/L 0.00 ug/L 0.00 ug/L 0-200 0-200 0-200 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 32 of 34 Analyte Batch B202095 Blank (B202095-BLK1) Oil & Grease LCS (B202095-BS1) Oil & Grease LCS Dup (B202095-BSD1) Oil & Grease Matrix Spike (B202095-MS1) Oil & Grease UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 GC - Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 mg/L 37.1 5.00 mg/L 40.00 93 78-114 35.1 5.00 mg/L 40.00 88 78-114 6 20 Source: 2202010-05 40.8 5.00 mg/L 46.51 ND 88 78-114 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 33 of 34 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Standard Printed Circuits, Inc - 2202010 Project Number: 2202010 Metals ICP - Quality Control Analyte Batch B202100 Blank (B202100-BLK1) Cadmium Chromium Copper Lead Nickel LCS (B202100-BS1) Cadmium Chromium Copper Lead Nickel LCS Dup (B202100-BSD1) Cadmium Chromium Copper Lead Nickel Matrix Spike (B202100-MS1) Cadmium Chromium Copper Lead Nickel Matrix Spike Dup (B202100-MSD1) Cadmium Chromium Copper Lead Nickel Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 3.00 ug/L --- U 5.00 ug/L --- U 10.0 ug/L --- U 8.00 ug/L --- U 20.0 ug/L 195 3.00 ug/L 200.0 196 5.00 ug/L 200.0 193 10.0 ug/L 200.0 196 8.00 ug/L 200.0 196 20.0 ug/L 200.0 97.5 85-115 98.2 85-115 96.5 85-115 98.0 85-115 98.2 85-115 194 3.00 ug/L 196 5.00 ug/L 193 10.0 ug/L 194 8.00 ug/L 196 20.0 ug/L Source: 2202010-01 186 3.00 ug/L 188 5.00 ug/L 1450 10.0 ug/L 249 8.00 ug/L 194 20.0 ug/L Source: 2202010-01 192 15.0 ug/L 196 25.0 ug/L 1460 50.0 ug/L 262 40.0 ug/L 196 100 ug/L 200.0 200.0 200.0 200.0 200.0 97.1 85-115 0.426 20 98.0 85-115 0.250 20 96.3 85-115 0.213 20 96.9 85-115 1.19 20 98.2 85-115 0.0306 20 200.0 ND 200.0 ND 200.0 1310 200.0 65.7 200.0 3.94 92.8 80-120 94.2 80-120 71.2 80-120 91.8 80-120 94.9 80-120 200.0 ND 95.9 80-120 3.24 10 200.0 ND 98.0 80-120 3.96 10 200.0 1310 72.1 80-120 0.132 10 200.0 65.7 98.4 80-120 5.19 10 200.0 ND 98.0 80-120 1.16 10 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/14/2022 Page 34 of 34 Standard Printed Circuits, Inc.; 44 S. Main St., Sherburne Inspection Date: February 23, 2022 Permit No.: NYP080120 8.0 Photographs Standard Printed Circuits, Inc.; 44 S. Main St., Sherburne Inspection Date: February 23, 2022 Permit No.: NYP080120 Photo #1. Generated process wastewater is pumped into the On-Site Pretreatment System from the final sump pit. Photo #2. Compliance samples were collected from the monitoring location before discharging into the Village of Sherburne sewer collection system.