2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill. Picatinny Arsenal, New Jersey. Prepared for. Prepared by

Size: px

Start display at page:

Download "2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill. Picatinny Arsenal, New Jersey. Prepared for. Prepared by"

Pauline Robertson
5 years ago
Views:

for Prepared by EA Engineering, Science, and

1 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill Picatinny Arsenal, New Jersey Prepared for Prepared by EA Engineering, Science, and Technology, Inc., PBC Contract No. W91ZLK-13-D September 2016

2 This page intentionally left blank

2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill Picatinny Arsenal, New Jersey Prepared for U.S. Army Prepared by EA Engineering, Science, and Technology, Inc.

3 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill Picatinny Arsenal, New Jersey Prepared for U.S. Army Prepared by EA Engineering, Science, and Technology, Inc., PBC 225 Schilling Circle, Suite 400 Hunt Valley, Maryland (410) Frank DeSantis Jr. Project Manager 28 September 2016 Date James Costello Deputy Program Manager 28 September 2016 Date September 2016 EA Project No

4 This page intentionally left blank

5 EA Project No Page i EA Engineering, Science, and Technology, Inc., PBC September 2016 TABLE OF CONTENTS Page LIST OF FIGURES... ii LIST OF TABLES... ii LIST OF ACRONYMS AND ABBREVIATIONS... iii INTRODUCTION SITE BACKGROUND SCOPE OF WORK... 1 SAMPLING ACTIVITIES GROUNDWATER DEPTH MEASUREMENTS GROUNDWATER AND SURFACE WATER SAMPLING DATA VALIDATION AND USABILITY... 8 LONG-TERM MONITORING RESULTS GROUNDWATER ELEVATIONS GROUNDWATER MONITORING RESULTS EVALUATION OF DATA TRENDS REMEDY PERFORMANCE AND FUTURE ACTIONS REFERENCES APPENDIX A FIELD FORMS APPENDIX B LABORATORY AND DATA VALIDATION REPORTS APPENDIX C DATA TREND PLOTS Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

6 EA Project No Page ii EA Engineering, Science, and Technology, Inc., PBC September 2016 LIST OF FIGURES Number Title 1 Picatinny Arsenal General Location 2 Elevation Contour Map 3 Concentration Map 4 Long-Term Monitoring Flow Chart LIST OF TABLES Number Title 1 Monitoring Schedule 2 Well Specification and Elevation Summary 3 Monitoring Results 4 Exit Strategy Analysis 5 Proposed Monitoring Schedule Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

7 EA Project No Page iii EA Engineering, Science, and Technology, Inc., PBC September 2016 LIST OF ACRONYMS AND ABBREVIATIONS μg/l ARCADIS DBA EA ft amsl NBA NJDEP PICA RD ROD SCL Shaw TAL USACE USAEC USEPA Micrograms per liter ARCADIS U.S., Inc. Drum Burial Area EA Engineering, Science, and Technology, Inc., PBC Feet above mean sea level Northern Burial Area New Jersey Department of Environmental Protection Picatinny Arsenal Remedial design Record of Decision Site cleanup level Shaw Environmental, Inc. Target Analyte List United States Army Corps of Engineers United States Army Environmental Command United States Environmental Protection Agency Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

8 EA Project No Page iv EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

9 EA Project No Page 1 EA Engineering, Science, and Technology, Inc., PBC September 2016 INTRODUCTION EA Engineering, Science, and Technology, Inc., PBC (EA) has been retained by the United States Army Environmental Command (USAEC) to perform Installation Restoration Program activities at Picatinny Arsenal (PICA), located in Morris County, New Jersey. This work is being performed under the Environmental Remediation Multiple Award Indefinite Delivery/Indefinite Quantity Contract W91ZLK-13-D-0004 Delivery Order 0009, and will be overseen by the USAEC and the United States Army Corps of Engineers (USACE), under approval by the New Jersey Department of Environmental Protection (NJDEP), and United States Environmental Protection Agency (USEPA) Region SITE BACKGROUND PICA is a 5,853-acre government-operated munitions research and development facility located in Morris County, New Jersey, approximately 40 miles west of New York City and 4 miles northeast of Dover, New Jersey (Figure 1). Site 23 (PICA-065) is approximately 10.3 acres in size and is located near the southern corner of PICA along the top of a ridge that forms the eastern boundary of the arsenal. The Site consists of the Drum Burial Area (DBA) located in the southern end of the Site, the Northern Burial Area (NBA), and the Central Borrow Pit, a cleared flat area located in the middle of the Site. Both the DBA and the NBA are landfilled areas and are currently surrounded by perimeter fencing. The Central Borrow Pit is open, and currently contains a linear mound of brush, debris, and fill dirt. Environmental impacts at Site 23 (PICA-065) are associated with historical disposal of drummed industrial waste including caustic paint stripper, used hydraulic oils, wastewater from oil reservoirs, cleaning solvents, fly ash, and solid waste. The area surrounding the Site is currently used for recreational activities, primarily hunting. 1.2 SCOPE OF WORK As stated in the Record of Decision (ROD) (U.S. Army 2004), the selected response action for Site 23 (PICA-065) is long-term groundwater monitoring and implementation of land use controls. The long-term groundwater monitoring program for Site 23 (PICA-065), established in the Final Long-Term Monitoring Plan and Land Use Control Remedial Design (RD) (Shaw Environmental, Inc. [Shaw] 2006), requires groundwater monitoring on the following schedule: Quarterly for a minimum of eight quarters Annually thereafter, if concentrations of analytes in any well have not increased or have remained consistent over a span of eight or more consecutive quarters. In accordance with the RD (Shaw 2006), statistical assessments were conducted in 2007, 2010, and 2015 following 2, 5, and 10 years of remedy implementation. In accordance with the exit strategy, a statistical analysis (Mann-Kendell) of long-term monitoring data is required at 5-year intervals. Pursuant to the statistical assessment performed in 2007 as part of the Final 2007 Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

10 EA Project No Page 2 EA Engineering, Science, and Technology, Inc., PBC September 2016 Annual Monitoring Report (ARCADIS U.S., Inc. [ARCADIS] 2009) and the monitoring schedule specified in the RD (Shaw 2006); the long-term monitoring frequency was reduced to annual sampling. monitoring was conducted annually beginning in 2008 and continued through Based on analytical results, the second and third statistical assessments conducted in 2010 and 2015, and the conditions set forth in the exit strategy documented in the RD (Shaw 2006), the long-term monitoring program was reduced to include annual sampling at: C-DM23-03 for cadmium and field parameters Seep and spring locations (one of each) for cis-1,2-dichloroethene. Sampling at C-MW23-1B was removed from the long-term monitoring program after the 2015 sampling did not result in detections of target analyte list (TAL) metals and radiologicals. With no detections of contaminants of concern through three annual sampling events, the well was removed from monitoring based on consistent observation of concentrations less than site cleanup levels (SCLs). The long-term monitoring schedule for Site 23 (PICA-065) is presented in Table 1. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

11 Su ss ex Co un t y M or ris Co un t y ³ Post Farm Landfill (PICA-065) _ ^ NJ 0 Installation Boundary 2 Miles Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, increment P Corp., NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), MapmyIndia, OpenStreetMap contributors, and the GIS User Community 2016 ANNUAL REPORT SITE 23 - POST FARM LANDFILL (PICA-065) PICATINNY ARSENAL Figure 1 Picatinny Arsenal General Location

12 EA Project No Page 4 EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

13 EA Engineering, Science, and Technology, Inc., PBC Table 1 Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year Sample Date Quarter (Calender) Sample ID Media C-DM23-01 C-DM23-02 C-DM23-03 C-MW23-1B C-MW23-4B C-MW23-5B First Second Third Fourth Fifth Jan-Mar Apr-Jun Jul-Sep Oct-Dec Apr-Jun Jan-Mar Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec 1st 2nd 3rd 4th 2nd 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th,,,,,,, C-MW-14 (a) NS NS NS C-23-MW-001 C-23-MW-002 C-23-MW-003 C-23-MW-004,,,,,,,,,,, NS NS NS NS NS NS,,,, NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Cadmium and Radium-226 NS NS NS Cadmium and Radium-226 NS NS NS Cadmium and Radium-226 NS NS Cadmium NS NS NS Cadmium NS NS NS Cadmium NS NS NS gross beta NS NS NS gross beta NS NS NS gross beta NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS,, NS,,,,,,,,,,,, NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS C-MW23-1B (b) NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS Seep Surface Water NS NS NS NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Spring Surface Water, NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry; therefore no samples have been collected. Monitoring well C-MW23-1B replaced this location in (b) C-MW23-1B was added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year. = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method 3010A/6010B and 7470A. (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. NS Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

14 EA Engineering, Science, and Technology, Inc., PBC Table 1 Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year Sample Date Quarter (Calender) Sample ID Media 2011 Sixth 2012 Seventh Eighth Ninth Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 2015 Tenth 2016 Eleventh C-DM23-01 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-02 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-03 NS NS Cadmium NS NS NS Cadmium NS NS NS NS Cadmium NS NS Cadmium NS NS NS Cadmium NS NS NS Cadmium NS C-MW23-1B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-4B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-5B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW-14 (a) NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-001 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-002 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-003 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-004 C-MW23-1B (b) Seep Spring Surface Water Surface Water NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NR NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS NS cis-1,2-dce NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS NS cis-1,2-dce NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry; therefore no samples have been collected. Monitoring well C-MW23-1B replaced this location in (b) C-MW23-1B was added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year. = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

15 EA Engineering, Science, and Technology, Inc., PBC Table 1 Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year Sample Date Quarter (Calender) Sample ID Media Twelfth Thirteenth Fourteenth Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th C-DM23-01 NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-02 NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-03 NS NS Cadmium NS NS NS Cadmium NS NS NS Cadmium NS C-MW23-1B NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-4B NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-5B NS NS NS NS NS NS NS NS NS NS NS NS C-MW-14 (a) NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-001 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-002 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-003 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-004 NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-1B (b) Seep Spring Surface Water Surface Water NS NS NS NS NS NS NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry; therefore no samples have been collected. Monitoring well C-MW23-1B replaced this locatio (b) C-MW23-1B was added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year. = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

16 This page left intentionally blank

17 EA Project No Page 7 EA Engineering, Science, and Technology, Inc., PBC September 2016 SAMPLING ACTIVITIES This section summarizes the long-term monitoring activities conducted as part of the 2016 sampling event. Field forms are provided as Appendix A. 2.1 GROUNDWATER DEPTH MEASUREMENTS Water levels and the depths of wells in the monitoring well network, consisting of ten wells, were measured on 7 July The groundwater elevations for the July 2016 sampling event are presented in Table 2 and a groundwater elevation contour map is provided as Figure 2. Table 2 Well Specification and Elevation Summary 7/7/2016 Well ID Well Diameter (inches) Aquifer Measuring Point Elevation (ft amsl) Screen Interval (ft amsl) DTW (ft bmp) GWE (ft amsl) C-DM Bedrock C-DM Bedrock C-DM Bedrock C-MW23-1B 4 Bedrock C-MW23-4B 4 Bedrock C-MW23-5B 4 Bedrock C-MW-14 4 Overburden DRY DRY C-23-MW-001 (a) 4 Bedrock NM NM C-23-MW Bedrock NM NM C-23-MW Bedrock Notes: (a) Measuring point elevation estimated. --- = Not available. ft amsl = Feet above mean sea level. ft bmp = Feet below measuring point. DTW = Depth to water. GWE = elevation. NM = Not measured well were located in an inaccessible fenced-off area. 2.2 GROUNDWATER AND SURFACE WATER SAMPLING The 2016 annual groundwater monitoring event consisted of collection of one groundwater sample from monitoring well C-DM The groundwater sample was collected on 7 July 2016 using the low flow sampling method. The sample was submitted to SGS Accutest Laboratories of New England, located in Marlborough, Massachusetts, for analysis of cadmium by USEPA Method 6020/6010. The following water quality parameters were also measured using a handheld multi-parameter instrument: ph, specific conductance, temperature, dissolved oxygen, and oxidation reduction potential. The following scheduled activities were not conducted during 2016: Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

18 EA Project No Page 8 EA Engineering, Science, and Technology, Inc., PBC September 2016 Seep and spring sampling for cis-1,2-dichloroethene. The seep and spring samples were not collected as no seeping of groundwater and no surface water was observed in the areas depicted on the Site map. Based on a review of historical analytical data for the seep and spring locations, samples have only been collected in these locations during the first and fourth quarters of 2003, and the second quarter of DATA VALIDATION AND USABILITY All data collected were third party validated in accordance with USEPA National Functional Guideline for Organic Data Review, dated August The validation criteria for long-term monitoring data include a review of the laboratory report narrative for noted deficiencies and the potential impact to data usability. Therefore, a review of chain-of-custodies, sample preservation, sample receipt logs, and a review of quality control parameters were performed for all data packages. No major deficiencies were identified during the data validation; therefore, no additional review was performed. A copy of the data validation report is included with Appendix B. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

19 ³ C-DM ft amsl C-DM ft amsl < C-MW23-1B ft amsl < 840 ft amsl < C-MW23-5B ft amsl < 830 ft amsl < < C-MW-14 Dry 820 ft amsl C-23-MW ft amsl 810 ft amsl C-DM ft amsl < 800 ft amsl < C-MW23-4B ft amsl 790 ft amsl < C-23MW-001 Not Measured 0 < C-23MW-002 Not Measured 300 Feet Installation Boundary Post Farm Landfill (PICA-065) Note: All wells screened in the bedrock aquifer except C-MW-14, which is screened in the overburden. - Wells gauged on 7 July ft amsl = feet above mean sea level < Elevation Contour Inferred Elevation Contour 2016 ANNUAL REPORT SITE 23 - POST FARM LANDFILL (PICA-065) PICATINNY ARSENAL Monitoring Well Flow Direction Figure 2 Elevation Contour Map

20 EA Project No Page 10 EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

21 EA Project No Page 11 EA Engineering, Science, and Technology, Inc., PBC September 2016 LONG-TERM MONITORING RESULTS Results from the 2016 groundwater sampling event are summarized below. monitoring well locations and 2016 sample results are presented on Figure 3. Laboratory analytical reports and data validation reports are provided in Appendix B. 3.1 GROUNDWATER ELEVATIONS Historical groundwater elevation data indicate that groundwater flows generally to the southwest. elevations collected in July 2016 ranged from feet above mean sea level (ft amsl) at C-DM23-03 to ft amsl at C-MW23-4B. Depth to groundwater measurements and corresponding groundwater elevations are provided in Table 2 and groundwater contours are provided on Figure GROUNDWATER MONITORING RESULTS Cadmium was detected in C-DM23-03 at a concentration of 5.0 micrograms per liter (µg/l), which is greater than the SCL of 4 µg/l. Historical concentrations of cadmium at C-DM23-03 are provided in Table 3. quality parameters for the sampling event are provided in Table 3. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

22 ³ Location ID Chemical Name Cadmium SCL 4 C-23-DM23-01 < C-DM /7/ Unit µg/l < & < C-MW23-01B C-MW23-5B < < < C-MW-14 C-23-MW-004 C-23-DM23-02 < < C-MW23-4B < < C-MW C-MW Note: SCL = Site Cleanup Level µg/l = micrograms per liter Shaded values indicate concentrations greater than the SCL. Installation Boundary Post Farm Landfill (PICA-065) < Existing Monitoring Well < Monitoring Well Sampled in 2016 & 2016 ANNUAL REPORT SITE 23 - POST FARM LANDFILL (PICA-065) PICATINNY ARSENAL Feet Figure 3 Cadmium Concentration Map

23 EA Engineering, Science, and Technology, Inc., PBC Table 3 Monitoring Results EA Project No September 2016 Location ID Sample Date 10/21/ /18/ /8/2010 9/9/2011 9/11/2012 1/8/ /8/2014 9/21/2015 7/7/2016 7/7/2016 Units PICA 065 SCLs Duplicate COC Cadmium µg/l J 4.79 J 4.72 J 7.35 J J 5.61 J Water Quality Field Parameters Dissolved Oxygen mg/l Oxidation Reduction Potential mv ph S.U Turbidity n.t.u Specific Conductance mscm Temperature C Notes: 1 C-DM23-3 was inadvertently not sampled during the 2013 calendar year; therefore a sample was collected January 2014 to provide as near a representative 2013 sample as possible. This location was sampled again during in July 2014 as part of the 2014 long-term monitoring event. 2 Analytical results in the 2013 and 2014 Annual Reports were presented as being in micrograms per liter; however, the concentrations were in milligrams per liter. Values exceeding the applicable screening criterion are boldfaced and shaded. "---" = Not applicable. mv = Millivolt. C = Degrees Celsius. n.t.u = Nephelometric turbidity units. µg/l = Microgram per liter. SCL = Site cleanup level. cfs = Cubic feet per second. S.U. = Standard units. COCs = Constituents of concern. J = Indicates an estimated result. mg/l = Milligram per liter. U = Indicates analyte was analyzed for but not detected. mscm -1 = MilliSieman per centimeter. msm -1 = MilliSieman per meter. C-DM Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

24 EA Project No Page 14 EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal 2016 Annual Monitoring Report Morris County, New Jersey Site 23 (PICA-065) Post Farm Landfill

25 EA Project No Page 15 EA Engineering, Science, and Technology, Inc., PBC September 2016 EVALUATION OF DATA TRENDS A cadmium trend plot and Mann-Kendall trend analysis performed on C-DM23-03 are provided within Appendix C. Cadmium concentrations have generally been stable with minor fluctuations since the start of long-term monitoring. Statistical analysis of long-term monitoring data is required at 5-year intervals, with the most recent evaluation completed in Results of the 2015 Mann-Kendall trend analysis did not identify a significant increasing or decreasing trend. There was a notable decline in cadmium concentrations in the groundwater sample collected at C-DM23-03 in January 2014 (0.518 µg/l). In July 2014, September 2015, and July 2016, concentrations of cadmium returned to concentrations consistent with historical results. Although cadmium was detected at a concentration greater than the SCL of 4.0 µg/l in annual groundwater samples collected at C-DM23-03 from 2008 through 2012 and in 2014 through 2016, the concentrations of cadmium have not exceeded the historical maximum concentration (7.8 µg/l) detected during the first quarterly sampling event (5 February 2003). Furthermore, it should be noted that the trigger value for cadmium, as specified in the RD, is 18.7 µg/l. Based on review of data collected to date, cadmium concentrations in C-DM23-03 are not expected to exceed the trigger value. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

26 EA Project No Page 16 EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

27 EA Project No Page 17 EA Engineering, Science, and Technology, Inc., PBC September 2016 REMEDY PERFORMANCE AND FUTURE ACTIONS At the start of long-term monitoring (first quarter 2003) there were 11 groundwater monitoring wells included in the long-term monitoring regimen. Based upon the results of the statistical analysis conducted in 2007 and 2010, nine of the eleven wells were removed from the groundwater sampling program. The ROD did not specify a remedial timeframe for the longterm monitoring component of this remedy. However, the results of the 2010 statistical analysis indicated a majority (9 of 11) of the groundwater wells had observed sustained declines in constituent of concern concentrations and warranted removal from the long-term monitoring program. Sampling at C-MW23-1B was removed from the long-term monitoring program in 2015 after three annual sampling events did not result in any detections of TAL metals and radiologicals. The duration and frequency of monitoring (greater or lesser) is subject to change based upon evaluation of the data collected and agreement by USEPA and the NJDEP. The current long-term monitoring schedule is provided in Table 1. A flow chart depicting the longterm groundwater monitoring exit strategy is presented on Figure 4. In accordance with the exit strategy, a statistical analysis (Mann-Kendell) of long-term monitoring data is required at 5-year intervals. In 2015, the results of the Mann-Kendall tests indicated that there was no trend. The annual sampling results were evaluated against the following conditions and are presented in Table 4: Condition A: Removal of wells/analytes from monitoring based on consistent observation of concentrations less than SCLs. Condition B: Continue annual monitoring if constituent concentrations at a sampling point are consistent over eight or more consecutive periods or concentrations are not increasing over that period. Condition C: Investigate more aggressive remedial alternatives if average constituent concentrations for two consecutive periods are greater than the trigger value for cadmium (18.7 µg/l) and concentrations are increasing at one or more sampling points. Statistically significant increases will be determined using the Mann-Kendell test during the 5-year statistical assessment. After 11 years of monitored natural attenuation monitoring since remedy implementation, only cadmium remains above its SCL at C-DM in the NBA. Concentrations of cadmium in C-DM were greater than SCLs and remain stable, consistent with historical detections. Concentrations of cadmium have not been observed to be greater than the trigger value. Based upon historical sampling, remaining contaminants at the Site are limited to cadmium in one well with stable concentrations. This suggests that annual sampling is not necessary to monitor trends in concentrations. Therefore, while the exit strategy detailed in the RD (Shaw 2006) recommends annual sampling for Condition B wells, it is proposed that the Site move to a 6 th Quarter sampling schedule. The groundwater sampling program would consist of the current well (C-DM-23-03) and the surface water program would consist of the current locations (the Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

28 EA Project No Page 18 EA Engineering, Science, and Technology, Inc., PBC September 2016 spring and the seep). sampling would include analysis for cadmium, while the surface water program would consist of analysis for cis-1,2-dichloroethene. It is proposed that the next sampling event be scheduled for 1 st Quarter 2018 (Table 5). Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

29 EA Engineering, Science, and Technology, Inc., PBC Well Measurement for Analyte is Above SCLs If Yes, which Analyte? Table 4 Exit Strategy Analysis Measurements for Analyte at a Sampling Point are Consistent Over Eight or More Periods or Are Not Increasing If Increasing, which Analytes? Average Concentration for Analyte for Two Consecutive Periods are Above "Trigger Value" TAL Metals C-DM23-03 Yes Cadmium No trend NA Frequency change Sample every 6th Quarter (Cadmium only) Seep Media Surface Water Current Long-Term Monitoring Program (cis-1,2-dce only) Condition A Condition B Condition C If Yes, which Analyte? Long-Term Monitoring Program Revision ND NA NA NA Frequency change No NA Notes Area will continue to be inspected and sampled, if located, concurrent with groundwater sampling. EA Project No September 2016 Spring Surface Water (cis-1,2-dce only) Notes: (a) Based on three sample events conducted prior to ARAR = Applicable or relevant and appropriate requirement. NA = Not applicable. ND = No data. TAL = Target analyte list. = Volatile organic compounds. No (a) NA NA NA Frequency change Area will continue to be inspected and sampled, if located, concurrent with groundwater sampling. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

30 This page left intentionally blank

31 EA Engineering, Science, and Technology, Inc., PBC Table 5 Proposed Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year First Second Third Fourth Fifth Sample Date Jan-Mar Apr-Jun Jul-Sep Oct-Dec Apr-Jun Jan-Mar Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Sep Oct-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Quarter (Calender) 1st 2nd 3rd 4th 2nd 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th Sample ID Media C-DM23-01 C-DM23-02 C-DM23-03 C-MW23-1B C-MW23-4B C-MW23-5B,,,,,,, C-MW-14 (a) NS NS NS C-23-MW-001 C-23-MW-002 C-23-MW-003 C-23-MW-004,,,,,,,,,,, NS NS NS NS NS NS,,,, NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Cadmium and Radium-226 NS NS NS Cadmium and Radium-226 NS NS NS Cadmium and Radium-226 NS NS Cadmium NS NS NS Cadmium NS NS NS Cadmium NS NS NS gross beta NS NS NS gross beta NS NS NS gross beta NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS,, NS,,,,,,,,,,,, NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS Radium-226 NS NS NS Radium-226 NS NS NS Radium-226 NS C-MW23-1B (b) NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS Seep Surface Water NS NS NS NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Spring Surface Water, NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry, therefore no samples have been collected. Monitoring well C-MW23-1B replaced this location in (b) C-MW23-1B has been added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method 3010A/6010B and 7470A. (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. NS Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

32 EA Engineering, Science, and Technology, Inc., PBC Table 5 Proposed Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year Sample Date Quarter (Calender) Sample ID Media Sixth Seventh Eighth Ninth Tenth Eleventh Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th C-DM23-01 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-02 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-03 NS NS Cadmium NS NS NS Cadmium NS NS NS NS Cadmium NS NS Cadmium NS NS NS Cadmium NS NS NS Cadmium NS C-MW23-1B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-4B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-5B NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-MW-14 (a) NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-001 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-002 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-003 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-004 C-MW23-1B (b) Seep Spring Surface Water Surface Water NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NR NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS NS cis-1,2-dce NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS NS cis-1,2-dce NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry, therefore no samples have been collected. Monitoring well C-MW23-1B replaced this location in (b) C-MW23-1B has been added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method 3010A/6010B and 7470A. (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

33 EA Engineering, Science, and Technology, Inc., PBC Table 5 Proposed Monitoring Schedule EA Project No September 2016 Calendar Year Operation Year Sample Date Quarter (Calender) Sample ID Media Twelfth Thirteenth Fourteenth Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec Jan-Mar Apr-Jun Jul-Aug Sep-Dec 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th C-DM23-01 NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-02 NS NS NS NS NS NS NS NS NS NS NS NS C-DM23-03 NS NS NS NS Cadmium NS NS NS NS NS Cadmium NS C-MW23-1B NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-4B NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-5B NS NS NS NS NS NS NS NS NS NS NS NS C-MW-14 (a) NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-001 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-002 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-003 NS NS NS NS NS NS NS NS NS NS NS NS C-23-MW-004 NS NS NS NS NS NS NS NS NS NS NS NS C-MW23-1B (b) Seep Spring Surface Water Surface Water NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS cis-1,2-dce NS NS NS NS NS cis-1,2-dce NS NS NS NS NS cis-1,2-dce NS NS NS NS NS cis-1,2-dce NS Notes: (a) C-MW-14 is historically dry, therefore no samples have been collected. Monitoring well C-MW23-1B replaced this location in (b) C-MW23-1B has been added to the monitoring regimen to replace C-MW-14 during the 2013 calendar year = Completed. = Planned. cis-1,2-dce = cis-1,2-dichloroethene. NS = Not sampled. NR = Not requiredas part of current monitoring program. TAL = Target analyte list. = Volatile organic compounds. TAL Metals by United States Environmental Protection Agency (USEPA) SW-846 Method 3010A/6010B and 7470A. (gross alpha and gross beta) by USEPA (Alpha Spectroscopy Radioisotopes) by USEPA 901.1, 903.0, 904.0, and (Gamma Spectroscopy Radioisotopes) by USEPA (modified). by USEPA SW-846 Method 5030B/8260B. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

34 This page left intentionally blank

35 EA Project No Page 23 EA Engineering, Science, and Technology, Inc., PBC September 2016 REFERENCES ARCADIS U.S., Inc. (ARCADIS) Final 2007 Annual Monitoring Report for Site 23 (PICA-065) Post Farm Landfill. December. Shaw Environmental, Inc. (Shaw) Final Long Term Monitoring Plan and Land Use Control Remedial Design for Site 23 (PICA-065) The Post Farm Landfill, Picatinny Arsenal, New Jersey. December. U.S. Army Record of Decision for Site 23 (PICA-065) Post Farm Landfill, Picatinny Arsenal, New Jersey. Final. August. Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

36 EA Project No Page 24 EA Engineering, Science, and Technology, Inc., PBC September 2016 This page intentionally left blank Picatinny Arsenal Morris County, New Jersey 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill

37 Appendix A Field Forms

38 This page intentionally left blank

57 Appendix B Laboratory and Data Validation Reports (Provided on CD)

58 This page intentionally left blank

59 Appendix C Data Trend Plots

60 This page intentionally left blank

61 Appendix C Data Trend Plots 2016 Annual Monitoring Report Site 23 (PICA-065) Post Farm Landfill Picatinny Arsenal, New Jersey Trend Plot for C-DM Cadmium Concentration (µg/l) Site Cleanup Level for Cadmium is 4.0 micrograms per liter (µg/l) 2/5/2003 5/12/2003 8/18/ /24/ /6/2007 6/5/2007 8/21/ /15/ /21/ /18/200 10/8/2010 9/9/2011 9/11/2012 1/8/2014 7/8/2014 9/21/2015 7/7/ C-DM Notes: (1) Results below the method detection limit (MDL) are presented graphically as zero. (2) Results are presented in micrograms per liter. Page 1 of 1

62 This page intentionally left blank

CITY OF VACAVILLE PLANNING COMMISSION Item No. 8.A STAFF REPORT July 18, 2016 STAFF CONTACT: Amy Feagans, Contract Planner (707)

CITY OF VACAVILLE PLANNING COMMISSION Item No. 8.A STAFF REPORT July 18, 2016 STAFF CONTACT: Amy Feagans, Contract Planner (707) 449-5140 TITLE: THE FARM AT ALAMO CREEK ENVIRONMENTAL IMPACT REPORT (EIR)