FALL 2017 SEMI-ANNUAL WATER QUALITY MONITORING REPORT FOR THE HALIFAX MUNICIPAL LANDFILL

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1 FALL 207 SEMI-ANNUAL WATER QUALITY MONITORING REPORT FOR THE HALIFAX MUNICIPAL LAFILL December 2, 207 VTDEC Project NS Prepared for: Town of Halifax P.O. Box 45 Halifax, Vermont Prepared by: 589 Avenue D; Suite 0 P.O. Box 787 Williston, Vermont (802) rebeccat@kas-consulting.com KAS Project #600045

2 Fall 207 Semi-Annual Water Quality Monitoring Report Halifax Landfill, Halifax, Vermont Introduction KAS, Inc (KAS) conducted a semi-annual water quality monitoring event on October 25, 207 at the Halifax Landfill (Site Location Map and Site Map in Appendix A). A groundwater sample was collected from monitoring well MW-3 and analyzed for perfluorinated compounds (PFCs) via EPA Method 537 (short list). All sampling and analysis was conducted in accordance with the current landfill certification. The sample was field analyzed for temperature, ph, and specific conductance using a properly calibrated YSI Pro Multi-Meter. The depth to water was gauged using a Geotech water level indicator. Results Field measurements Depth to water in MW-3 was measured at 4.85 feet below top of casing (btoc). The water temperature was 3.2 degrees Celsius and a ph value of 6.5 standard units was recorded at the time of sampling. The depth to water, temperature and ph measurements recorded are within range of historical measurements. A specific conductance reading of 500 µs/cm was noted at the time of sampling and is within range of historical fluctuations. Field measurement data is tabulated in Appendix B. Laboratory results Analytical testing indicated the presence of several PFCs in the groundwater sample collected from MW-3. A combined concentration of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in MW-3 was reported at 8.9 parts per trillion (ng/l) which exceeds the Vermont Groundwater Enforcement Standard (VGES) of 20 ng/l. No PFCs were detected above laboratory method detection limits in the trip blank sample. Current and historical analytical data is tabulated in Appendix B and a copy of the laboratory report is provided in Appendix C. PFC concentrations at MW-3 declined compared to the previous sampling in May 207. The data set is still inadequate (only three sampling rounds) to evaluate trends and a seasonal correlation between PFC levels and depth to groundwater remains unclear. The next groundwater monitoring event is scheduled to occur in May 208. KAS, Inc.

3 Fall 207 Semi-Annual Water Quality Monitoring Report Halifax Landfill, Halifax, Vermont APPEIX A Site Location Map and Site Map KAS, Inc.

4 N O R T H Closed Landfill KAS Job Number: Source: TOWN OF HALIFAX CLOSED LAFILL 2044 Branch Road, Halifax, VT Site Location Map Date: 05/25/6 Drawing No. 0 Scale: NTS By: CS

N O R T H MW-5 (DESTROYED) MW-2 (DESTROYED) LAFILL MW-3 MW- MW-4 DOWNGRADIENT MONITORING WELL SURFACE WATER SAMPLE * montoring well and surface water locations are

5 N O R T H MW-5 (DESTROYED) MW-2 (DESTROYED) LAFILL MW-3 MW- MW-4 DOWNGRADIENT MONITORING WELL SURFACE WATER SAMPLE * montoring well and surface water locations are approximate VTDEC Project: NS KAS Job Number: Source: Google Earth HALIFAX CLOSED LAFILL 2044 Branch Road, Halifax, VT SITE MAP Date: 07/3/7 Drawing No. 2 Scale: NTS By: RT

6 Fall 207 Semi-Annual Water Quality Monitoring Report Halifax Landfill, Halifax, Vermont APPEIX B Historical Sampling Data KAS, Inc.

7 GROUWATER QUALITY SUMMARY HALIFAX LAFILL HALIFAX, VT MW-3 Parameter SAMPLING DATE: VGES PAL (PPM unless noted) Aug-93 Dec-95 May-96 Nov-96 May-97 Oct-97 May-98 Oct-98 May-99 Oct-99 May-00 Dec-00 Oct-0 Jan-02 Jun-02 Dec-02 Jun-03 ph** change of ph unit nt Conductivity (µs/cm)** change of 00 µs/cm nt nt COD** change of 25 ppm 6.9 < nt Chloride* < nt Sodium* & ** (change of 0 ppm) nt nt nt 39 6 Ca Hardness** change of 00 NA nt nt 230 nt nt nt Dissolved Chromium nt <0.05 <0.002 < <0.002 < <0.002 <0.002 < nt <0.00 <0.00 <0.00 Dissolved Copper nt <0.05 <0.0 < <0.0 < <0.0 < nt Dissolved Iron* <0.05 nt nt nt nt nt nt nt nt nt nt nt nt 0.8 nt nt Dissolved Manganese* <0.02 <0.05 < nt <0.005 <0.005 Dissolved Nickel nt <0.05 <0.0 <0.0 <0.0 <0.0 <0.0 <0.0 <0.0 nt <0.0 < nt < Dissolved Zinc* nt < nt Dissolved Arsenic nt <0.00 <0.002 <0.0 <0.0 <0.0 <0.0 <0.0 <0.0 <0.0 <0.0 < nt <0.00 <0.00 <0.00 Dissolved Cadmium nt <0.005 < <0.00 <0.00 <0.00 nt <0.00 <0.00 < <0.00 <0.00 nt <0.00 <0.00 <0.00 Dissolved Lead nt <0.005 <0.00 <0.0 <0.0 <0.0 < <0.0 <0.0 <0.0 <0.0 <0.00 nt <0.00 <0.00 <0.00 Calcium NA NA nt nt nt nt nt nt 2.3 nt nt nt nt nt nt nt nt nt nt Methylene Chloride <0 <2 <2 <2 <2 nt <2 nt nt <5 nt nt nt <5 nt 600 E 560 Parameter SAMPLING DATE: VGES PAL (PPM unless noted) /3/03 6/7/04 0/28/04 2//05 5/6/06 0/6/06 5/7/07 0/7/07 5/8/08 0/24/08 5/5/09 0/22/09 5/0/0 0/3/0 5/25/ 0/26/ 5/8/2 ph** change of ph unit ns ns nt NR Conductivity (µs/cm) ** change of 00 µs/cm ns ns nt Temperature (degrees C) change of 5.6 deg C nt nt ns ns nt nt nt nt nt nt nt nt nt nt nt Depth to Water (feet btoc) NA NA nt nt ns ns nt nt nt nt nt nt nt nt nt nt nt COD** change of 25 ppm 0 20 ns ns 2 60 < < nt Chloride* ns ns < Sodium* & ** (change of 0 ppm) ns ns 7.6 <5 5 < Ca Hardness** change of 00 NA ns ns nt nt nt nt nt nt nt nt nt nt nt nt nt Dissolved Chromium <0.00 <0.00 ns ns <0.002 < < <0.00 <0.02 <0.02 <0.005 <0.005 <0.005 <0.005 nt Dissolved Copper ns ns < <0.00 <0.02 <0.02 <0.02 <0.02 <0.02 <0.020 nt Dissolved Iron* <0.05 <0.05 ns ns <0.05 < <0.020 <0.020 Dissolved Manganese* <0.005 <0.005 ns ns <0.005 <0.005 < <0.02 <0.02 <0.02 <0.020 <0.020 Dissolved Nickel < ns ns < <0.02 <0.02 <0.005 <0.005 <0.005 <0.005 nt Dissolved Zinc* ns ns < <0.02 <0.02 <0.005 < <0.020 nt Dissolved Arsenic <0.00 <0.00 ns ns <0.002 <0.002 <0.00 <0.00 <0.00 <0.00 <0.002 <0.002 <0.00 <0.00 <0.00 <0.020 nt Dissolved Cadmium <0.00 <0.00 ns ns <0.0005< <0.00 <0.00 <0.00 <0.00 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 nt Dissolved Lead <0.00 <0.00 ns ns <0.002 < <0.00 <0.00 <0.00 <0.00 <0.00 <0.00 <0.00 <0.00 <0.00 nt Calcium NA AN nt nt ns ns nt nt nt nt nt nt nt nt nt nt nt nt nt Methylene Chloride <5 <5 ns ns nt nt nt nt nt nt nt nt nt nt nt nt nt continued on next page Notes: Only detected or previously detected volatile organic compounds are listed. ns = not sampled = exceeds PAL btoc = below top of casing nt = not tested during sampling round = exceeds VGES <xx = Not Detected< Detection Limit * = secondary groundwater quality standards (mg/l or ppm) = exceeds max acceptable change VGES = Vermont Groundwater Enforcement Standard (December 206) ** = maximum acceptable change (units as noted) PAL = Preventative Action Level (December 206) *** = All perfluorinated compound values reported in ng/l. Analysis via EPA Method 537 (short list) NA = No VGES/PAL available VGES and PALs pertain to total metals and are provided for reference only Results reported above detection limits are indicated in bold. E - The reported value exceeds largest calibration standard. Extrapolation of the calibration curve was employed to obtain the reported value.

GROUWATER QUALITY SUMMARY HALIFAX LAFILL HALIFAX, VT MW-3 (continued) Parameter SAMPLING DATE: VGES PAL (PPM unless noted) 0/9/2 5/30/3 0/6/3 5/5/4 0/2/4 5/28/5 0/29/5 May-6 0/9/6 5/30/207 0/25/207

8 GROUWATER QUALITY SUMMARY HALIFAX LAFILL HALIFAX, VT MW-3 (continued) Parameter SAMPLING DATE: VGES PAL (PPM unless noted) 0/9/2 5/30/3 0/6/3 5/5/4 0/2/4 5/28/5 0/29/5 May-6 0/9/6 5/30/207 0/25/207 ph** change of ph unit ns nt Conductivity (µs/cm)** change of 00 µs/cm ns nt Temperature (degrees C) change of 5.6 deg C ns nt Depth to Water (feet btoc) NA NA ns COD** change of 25 ppm nt 22 nt nt nt nt nt ns nt nt nt Chloride* ns nt nt nt Sodium* & ** (change of 0 ppm) nt nt nt nt nt ns nt nt nt Dissolved Chromium nt <0.005 nt nt nt nt nt ns nt nt nt Dissolved Copper nt <0.020 nt nt nt nt nt ns nt nt nt Dissolved Iron* <0.020 < <0.020 <0.020 ns nt nt nt Dissolved Manganese* <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ns nt nt nt Dissolved Nickel nt <0.005 nt nt nt nt nt ns nt nt nt Dissolved Zinc* nt <0.020 nt nt nt nt nt ns nt nt nt Dissolved Arsenic nt <0.00 nt nt nt nt nt ns nt nt nt Dissolved Cadmium nt <0.002 nt nt nt nt nt ns nt nt nt Dissolved Lead nt <0.00 nt nt nt nt nt ns nt nt nt Perfluorobutanesulfonic acid (PFBS)*** NA NA nt nt nt nt nt nt nt ns < <6.6 <6.6 Perfluorohexanesulfonic acid (PFHxS)*** NA NA nt nt nt nt nt nt nt ns < Perfluoroheptanioic acid (PFHpA)*** NA NA nt nt nt nt nt nt nt ns Perfluorooctanoic acid (PFOA)*** nt nt nt nt nt nt nt ns Perfluorooctanesulfonic acid (PFOS)*** nt nt nt nt nt nt nt ns Perfluorononanoic acid (PFNA)*** NA NA nt nt nt nt nt nt nt ns <2.3 <.5 <.5 Notes: Only detected or previously detected volatile organic compounds are listed. ns = not sampled = exceeds PAL btoc = below top of casing nt = not tested during sampling round = exceeds VGES <xx = Not Detected< Detection Limit * = secondary groundwater quality standards (mg/l or ppm) = exceeds max acceptable change VGES = Vermont Groundwater Enforcement Standard (December 206) ** = maximum acceptable change (units as noted) PAL = Preventative Action Level (December 206) *** = All perfluorinated compound values reported in ng/l. Analysis via EPA Method 537 (short list) NA = No VGES/PAL available VGES and PALs pertain to total metals and are provided for reference only Results reported above detection limits are indicated in bold. E - The reported value exceeds largest calibration standard. Extrapolation of the calibration curve was employed to obtain the reported value. MW-3 PFC Concentrations vs Depth to Groundwater Concentration ng/l Depth to Groundwater (ft) PFOA/PFOS Total PFCs Depth to Groundwater Date

9 Fall 207 Semi-Annual Water Quality Monitoring Report Halifax Landfill, Halifax, Vermont APPEIX C Laboratory Report KAS, Inc.

10 NORTHERN LAKE SERVICE, INC. Analytical Laboratory and Environmental Services 400 North Lake Avenue - Crandon, WI Ph: (75) Fax: (75) Client: KAS Attn: Rebecca Treat 589 Avenue D, Suite 0 PO Box 787 Williston, VT Project: Halifax Landfill MW-3 NLS ID: COC: 9093: Matrix: DW Collected: 0/25/7 0:6 Received: /0/7 Parameter Perfluorinated Chemicals by EPA Method 537 Rev. Solid Phase Extraction by EPA Method 537 Trip Blank NLS ID: 0272 COC: 9093: Matrix: FB Collected: 0/25/7 0:5 Received: /0/7 Parameter Perfluorinated Chemicals by EPA Method 537 Rev. Solid Phase Extraction by EPA Method 537 ANALYTICAL REPORT Result see attached yes Result see attached yes Units Units Dilution Dilution WDNR Laboratory ID No WDATCP Laboratory Certification No EPA Laboratory ID No. WI00034 Analyzed /04/7 /0/7 Analyzed /09/7 /07/7 Printed: /0/7 NLS Project: NLS Customer: Method EPA 537 Rev. EPA 537 Method EPA 537 Rev. EPA 537 Page of Phone: PO # Lab Lab Values in brackets represent results greater than or equal to the LOD but less than the LOQ and are within a region of "Less-Certain Quantitation". Results greater than or equal to the LOQ are considered to be in the region of "Certain Quantitation". LOD and/or LOQ tagged with an asterisk(*) are considered Reporting Limits. All LOD/LOQs adjusted to reflect dilution and/or solids content. = Not Detected (< LOD) LOD = Limit of Detection LOQ = Limit of Quantitation NA = Not Applicable DWB = Dry Weight Basis %DWB = (mg/kg DWB) / ug/l = mg/l MCL = Maximum Contaminant Levels for Drinking Water Samples. Shaded results indicate >MCL. LOD LOD LOQ/MCL LOQ Reviewed by: Authorized by: R. T. Krueger President

11 ANALYTICAL RESULTS: Perfluorinated Chemicals by EPA 537 Rev. Safe Drinking Water Analysis Customer: KAS NLS Project: PO # Project Description: Halifax Landfill Project Title: Template: 537PPT Printed: /0/207 0:04 Page of Sample: MW-3 Collected: 0/25/7 Analyzed: /04/7 - Analytes: 6 ANALYTE NAME perfluorobutanesulfonic acid (PFBS) perfluoroheptanoic acid (PFHpA) perfluorohexanesulfonic acid (PFHxS) perfluorooctanoic acid (PFOA) perfluorononanoic acid (PFNA) perfluorooctanesulfonic acid (PFOS) C3-PFHxA (SURR) C3-PFDA (SURR) NOTES APPLICABLE TO THIS ANALYSIS: S = This compound is a surrogate used to evaluate the quality control of a method. RESULT % % UNITS WWB DIL LOD LOQ MCL Note S S Sample: 0272 Trip Blank Collected: 0/25/7 Analyzed: /09/7 - Analytes: 6 ANALYTE NAME perfluorobutanesulfonic acid (PFBS) perfluoroheptanoic acid (PFHpA) perfluorohexanesulfonic acid (PFHxS) perfluorooctanoic acid (PFOA) perfluorononanoic acid (PFNA) perfluorooctanesulfonic acid (PFOS) C3-PFHxA (SURR) C3-PFDA (SURR) NOTES APPLICABLE TO THIS ANALYSIS: S = This compound is a surrogate used to evaluate the quality control of a method. RESULT 86.% 9.56% UNITS WWB DIL LOD LOQ Note S S The PFOA branch isotope peak is included in the PFOA calculation per EPA directive.

12 SAMPLE COLLECTION A CHAIN OF CUSTODY RECORD CLIENT, K-FI., INC, ADDRESS P.O. CITY STATE ZIP kit Lc./ S "fbni Vi- asī-is- PROJECT DESCRIPTION / NO. QUOTATION NO. 77/94-/F7Y DNR FID If DNR LICENSE # CONTACT /42bḻiece A ' /R4--,; PURCHASE ORDER NO. 0 / 0 // ad,; <r" ITEM NO. NLS LAB. NO. SAMPLE ID PHONE FAX gth) - 3fYg - 0 f/yd Wisconsin DNR cert ID (Cran)/ (Wauk) Wisconsin DATCP ID (Cran)/ (Wauk) MATRIX: SW = surface water WW = waste water OW = groundwater DW = drinking water TIS = tissue AIR = air SOIL = soil SED = sediment PROD = product SL = sludge Lif,a, 4( 4 OTHER COLLECTION ( MATRIX "; e" - /slk- T DATE TIME se eaabove)/,e. pllio "0 -.3 /o/25 / /0/6 6 tv )( NORTHERN LAKE SERVICE, INC. Analytical Laboratory and Environmental Services 400 North Lake Avenue Crandon, WI Tel: (75) Fax: (75) / USE BOXES BELOW: Indicate Y or N if GW Sample is field filtered. Indicate G or C if \AAA/ Sample is Grab or Composite. N / / / / / / / / / / COLLECTION REMARKS (i.e. DNR Well ID #) 3. /2/5 8-L./I"- / 20 i CO CTED BY (signature) CUSTODY SEAL NO. (IF ANY) DATETT NIE. L --i 22 Berfabi ED BY (signature) RECEIVED BY (signature) DA /TIME - J DI - D BY (sigbature) METHOD OF TRANSPORT i DATE/TIM L - Ze/e)--; Mzer / FI _S+T(NLd,BY (signature) '. DPITEgIME COITION - ( A iltij_.--- -z n f. 0 M' 00 REMARKS &. OTHER INFORMATION COOLER # PRESERVATIVE: N = nitric acid OH = sodium hydroxide NP = no preservative Z = zinc acetate HA = hydrochloric & ascorbic acid WDNR FACILITY NUMBER ADDRESS REPORT TO rd toe e 6. kg-) INVOICE TO re,.6ec e cz. I'6'); I," /64 OW. - (0.4S wi/.c4 c'e4.p4m,25. IMPORTANT:, Rev. 7/20/5. TO MEET REGULATORY REQUIREMENTS, THIS FORM MUST BE COMPLETED IN DETAIL A INCLUDED IN THE COOLER CONTAINING THE SAMPLES DESCRIBED. 2. PLEASE USE ONE LINE PER SAMPLE, NOT PER BOTTLE. 3. RETURN THIS FORM WITH SAMPLES -CLIENT MAY KEEP YELLOW COPY. 4. PARTIES COLLECTING SAMPLE. LISTED AS REPORT TO A LISTED AS INVOICE TO AGREE TO STAARD TERMS & COITIONS ON REVERSE.

SPRING 2017 SEMI-ANNUAL WATER QUALITY MONITORING REPORT FOR THE HALIFAX MUNICIPAL LANDFILL

SPRING 2017 SEMI-ANNUAL WATER QUALITY MONITORING REPORT FOR THE HALIFAX MUNICIPAL LANDFILL SPRING 207 SEMI-ANNUAL WATER QUALITY MONITORING REPORT FOR THE HALIFAX MUNICIPAL LAFILL July 3, 207 VTDEC Project NS95-065 Prepared for: Town of Halifax P.O. Box 45 Halifax, Vermont 05358 Prepared by: