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Home My WebLink AboutBonnerton Summary Memo 2021 Update_FinalWETLAND HYDROLOGY IN THE BONNERTON ROAD NON-RIVERINE WET HARDWOOD FOREST - 2021 UPDATE BEAUFORT COUNTY, NORTH CAROLINA Prepared for: PCS Phosphate Company, Inc. Prepared by: CZR Incorporated 4709 College Acres Drive, Suite 2 Wilmington, NC 28403 August 2022 TABLE OF CONTENTS 1.0 Introduction............................................................................................................................................5 1.1 Area Description.................................................................................................................................5 2.0 Methodology...........................................................................................................................................5 2.1 Water Level.........................................................................................................................................5 2.2 Rainfall and Drought...........................................................................................................................6 2.3 PCS Deep Well Pump Operations and Water Levels in CZR Level TROLLS..........................................7 3.0 Results and Discussion............................................................................................................................7 3.1 Soil Series and Soil Profiles.................................................................................................................7 3.2 Rainfall and Drought in 2015 - 2021...................................................................................................7 3.3 Wetland Hydrology by Year................................................................................................................9 3.4 Mine Perimeter Deep Well Pump Operation and Near Surface Hydrology.....................................11 4.0 Summary...............................................................................................................................................11 5.0 Literature Cited.....................................................................................................................................13 Cover Photo: view looking west towards BHW 1, 21 September 2021 Bonnerton NRWHF Wetland Hydrology ii PCS Phosphate Company, Inc. 2021 Update August 2022 LIST OF FIGURES Figure 1 401 Water Quality Certification Conditions 9 and 13 Wetland Hydrology Monitoring.. F-1 Figure 2 Non-riverine Wet Hardwood Forest Areas (135A and 58A) avoided by Mod Alt L......... F-2 Figure 3 Bonnerton NRWHF Hydrology Monitoring Wells............................................................ F-3 Figure 4 Bonnerton NRWHF Wells and Soil Series........................................................................ F-4 Figure 5 2021 Porter Creek and WETS-Aurora/Gaylord Bay Rainfall ........................................... F-5 Figure 6 2020 Porter Creek and WETS -Aurora 6N Rainfall........................................................... F-6 Figure 7 2019 Porter Creek and WETS -Aurora 6N Rainfall........................................................... F-7 Figure 8 2018 Porter Creek and WETS -Aurora 6N Rainfall........................................................... F-8 Figure 9 2017 Porter Creek and WETS -Aurora 6N Rainfall........................................................... F-9 Figure 10 2016 Porter Creek and WETS -Aurora 6N Rainfall......................................................... F-10 Figure 11 2015 Porter Creek and WETS Aurora 6N Rainfall.......................................................... F-12 Figure 12 Bonnerton NRWHF Hydrology Monitoring Sites and Deep Well Locations .................. F-12 Figure 13 2015 — 2021 Hydrology during Deep Well Pump Operations ........................................ F-13 LIST OF TABLES Table 1 Monthly and annual rainfall for 2015-2021 recorded at the Porter Creek rain gauge and at the PCS Aurora 6N station.......................................................................................... T-1 Table 2 Drought conditions for the south side of Pamlico River in the vicinity of South Creek for theyears 2012-2021....................................................................................................... T-1 Table 3a Hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek during WETS normal and below normal rainfall in 2021 .......................... T-2 Table 3b Hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek independent of WETS thresholds in 2021................................................. T-3 Table 4a Summary of hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek during WETS normal or below normal rainfall from 2015-2021 .... T-4 Bonnerton NRWHF Wetland Hydrology iii PCS Phosphate Company, Inc. 2021 Update August 2022 Table 4b Summary of hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek independent of WETS thresholds from 2015-2021 .........................T-5 LIST OF APPENDICES Appendix A Soil Profile Descriptions at Bonnerton NRWHF and Upper Porter Creek Monitoring Wells Appendix B 2015-2020 Wetland Hydroperiods for Bonnerton NRWHF and Upper Porter Creek Monitoring Wells Appendix C 2021 Hydrology Graphs of Bonnerton Level TROLLS Bonnerton NRWHF Wetland Hydrology iv PCS Phosphate Company, Inc. 2021 Update August 2022 1.0 Introduction Per Conditions 9 and 13 of the modified 401 Water Quality Certification issued in January 2009 for the PCS Phosphate mine continuation near Aurora NC (DWQ #2008-0868, version 2.0), wetland hydrology of the portions of the Bonnerton Road non-riverine wet hardwood forest (NRWHF) shown as "135A" and "58A" on Figure 1 shall be monitored before and after the mine moves through the area between the avoided NRWHF areas and within the permitted mine boundary (Figure 2). The data collected are to ensure that the wetland hydrology of the two NRWHF areas avoided by the permitted mine boundary is maintained after mine impacts are completed and/or the mined -through area has been reclaimed. 1.1 Area Description The Bonnerton Road NRWHF is located on a peninsula between Durham Creek to the west and Porter Creek to the east; both creeks flow north to the nearby Pamlico River (Figure 1). Surface water flow of the peninsula into the two creeks is separated by the divide known as the Suffolk Scarp, a geomorphic feature whose highest elevation in this vicinity is just to the west of the 135A NRWHF (Figure 1). Slope of the terrain on the most eastern side of the scarp towards Porter Creek is —0.2 percent, while the slope approaches 1 percent nearer to the eastern toe of the Suffolk Scarp. Similar to other outer coastal plain interfluves in North Carolina, where the underlying Castle Hayne limestone is close to the surface, the forested landscape of the peninsula is gently rolling with occasional small closed depressions and small non-hydric areas of higher elevation. 2.0 Methodology 2.1 Water Level To monitor the pre -mine hydrology of the monitored area, a total of 14 semi -continuous electronic Level TROLL 500 data -logger water level monitoring wells, manufactured by In -Situ, were installed in June and July 2015 at the locations shown in Figure 3 (BHW1-BHW14). In addition to the 14 wells installed in 2015, there are six additional wells used to monitor the wetland hydrology adjacent to upper Porter Creek for a separate project (locations shown on Figure 3). Two other types of monitoring wells have been used at four of these locations (PCW1, PCW3, PCW4, and PCW6) since 2006 [Remote Data Systems (RDS) WL20s and WL80s and RDS Ecotone 20s and Ecotone 80s] but Level TROLL 500s have been in place at all six locations since 2015 (wells at PCW2 and PCWS were added). Each of the 14 Level TROLLS is housed inside a 2-inch diameter PVC well screen (0.010-inch slots) installed to a depth of approximately 32 inches and backfilled with filter sand. The recorder is suspended on a 43.75-inch cable in the well screen to record water levels within at least ^20 inches below the ground surface and up to ^20 inches above the surface. Among the 14 wells, the range of water levels which can be recorded below the surface ranges from -24.25 to -31.75 inches and the range of surface water which can be recorded ranges from +18.0 to +26.0 inches. The units record the water level every 1.5 hours (16 times per day). The six upper Porter Creek wells are housed inside a 3-inch diameter PVC well screen with 0.010-inch slots, but the Level TROLL cable is 60.25 inches long and among these wells, the range for below ground water level is -29.75 to -33.25 inches, and the range of I✓ surface water is +32.75 to +36.5 inches. (The longer cable is used for the upper Porter Creek wells as part of a different monitoring project methodology and protocol). To prevent damage by bears, the above -ground portions of all well screens were surrounded by a fence enclosure made of metal T-posts and strands of barbed wire. All 20 monitoring wells were checked and downloaded once a month. Most of the 14 wells are located in portions of the hardwood flat at slightly higher elevations than the six Porter Creek wells; however, no elevations have been surveyed so perceived differences in elevation are not quantified. Four monitored Bonnerton wells (BHWS, BHW6, BHW7, and BHW8) are within the permitted mine boundary; however, BHW8 was removed for mine related activity in September 2021. Wetland hydroperiods were calculated for each monitoring well during the growing season. A hydroperiod is defined as consecutive days during the growing season that the water table is within 12 inches of the surface or the surface is inundated, and is expressed as a percentage of the growing season. For this project, the growing season is defined by the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0) (USACE ERDC 2010) to match the Natural Resources Conservation Services' (NRCS) WETS tables and is 282 days long in non -leap years (28 February-6 December). For the purposes of this report, a hydroperiod for 6 percent or more of the growing season is considered a wetland hydroperiod. 2.2 Rainfall and Drought Rainfall was collected and measured using a RDS tipping bucket style rain gauge until 2019 when it became obsolete; it was replaced with a Texas Electronic TR-525USW style bucket with similar function and accuracy (+/- 1% at 0-2 inches/hour). Rainfall lands in the funnel of the rain gauge and is directed down to the bottom of the funnel where it drips into two calibrated "buckets" balanced on a pivot. Once the bucket has reached its calibrated amount, 0.010 inch of rain, it tips down registering the event as the opposite bucket rises to begin collecting the next calibrated amount of rain. Water is allowed to drain out of a hole on either side of the rain gauge underneath each bucket. The Porter Creek rain gauge was used for local rainfall data (Figure 3) except during any data gap or malfunction, when gaps were replaced with data from the nearby DCUT19 (3.3 miles to the northwest) or Aurora (PCS) plant site (4.7 miles to the east). Rainfall data collected at the NOAA stations PCS Aurora 6N and Gaylord Bay (starting in August of 2021) were used by the Natural Resources Conservation Service (NRCS) to provide long term rainfall. These data were downloaded by CZR Incorporated (CZR) and used to build annual rainfall figures to determine periods of normal rainfall. "Range of Normal" refers to the 30th and 70th percentile thresholds of the probability of onsite rainfall amounts outside of the normal range (based on historical averages). For 2021, the long-term historical averages were updated to include 1991-2020. Drought conditions are monitored nationally by several indexes. Periods of drought can affect the hydrology of a site and should be taken into consideration when wetland hydrology is interpreted. As suggested in the USACE 2010 Regional Supplement, the Palmer Drought Severity Index (PDSI) was used to determine drought periods for the area. The PDSI is useful because it "takes into account not only precipitation but also temperature, which affects evapotranspiration, and soil moisture conditions" (US Army Corps of Engineers 2010). The PDSI is calculated monthly and is based on major climatic divisions 11 within each state (US Army Corps of Engineers 2010). Although the index is not site -specific, for the purposes of this report it provided sufficient information to make general statements about drought conditions in the area. Drought conditions described by this index by month and year are for the NOAA Central Coastal Plain region of North Carolina. The US Drought Monitor website (http://droughtmonitor.unl.edu) provides a synthesis of multiple indices and impacts and reflects the consensus of federal and academic scientists on regional conditions on a weekly basis (updated each Thursday). The area used for regional drought conditions includes numerous watersheds of various sizes and may cover portions of more than one county. 2.3 PCS Deep Well Pump Operations and Water Levels in CZR Level TROLLS In previous reports a dynamic multiple linear regression model was used to compare water depth to rainfall, wind speed, wind direction, and discharge across three different time periods: pre, during, and post deep well pump operation. No adverse trends on hydroperiods were detected or attributed to the deep well pump operation during past evaluations; however the same test was not repeated for this report because the influence of estuarine wind -driven water and/or discharge from the Pamlico River is not expected at the Bonnerton wells since they are well above riparian areas. When discharge and wind parameters were removed from the evaluation, the remaining data sets (water level and rainfall) both violated the statistical assumption of normality (were not normally distributed) despite attempts to normalize. In addition, the statistical power of the non -parametric tests was very low, which is likely because there were many positive and negative water level readings, as well as many absent water level readings (greater than approximately 30 inches below the surface, which is the lower range of well detection). To aid in evaluation of potential effects of deep well pumps on Bonnerton wells, hydrology graphs of the Bonnerton wells are depicted along with each deep well pump operations (on/off dates) (Figure 12). 3.0 Results and Discussion 3.1 Soil Series and Soil Profiles The soil survey for Beaufort County NC (Kirby 1995) and web soil survey data show the area of the Bonnerton NRHWF as underlain mostly by Tomotley fine sandy loam and several other soil series which are all considered hydric; two of the soil series are considered non-hydric (Altavista fine sandy loam and Augusta fine sandy loam) (Figure 4). Since earlier well installation soil profiles were described by several biologists at different times, in 2016/2017, soil profiles at all 20 well locations were re -described using the NRCS hydric soil indicators (USDA 2010) as directed by the 2010 regional supplement (soil profiles included in Appendix A). 3.2 Rainfall and Drought in 2015 - 2021 Monthly rainfall totals recorded in 2015-2021 at the Porter Creek rain gauge and at the PCS Aurora 6N station are shown in Table 1. In 2021, monthly rainfall totals below the 30th percentile in May, September, November, and December; within 30-70th percentiles in March, April, July, and October; and above the 70th percentile in January, 7 February, June, and August (Figure 5). Annual 2021 rainfall total at the Porter Creek rain gauge was 51.04 inches. Porter rain gauge monthly totals were highest for the year in June which was the same month that the PCS Aurora 6N rain gauge recorded its highest monthly total. Days of above normal rainfall (13 February through 21 March, 7 June through 10 July, and 3 August through 31 August) were excluded from hydroperiod calculations to compare with hydroperiods using all rainfall data. In 2020, monthly rainfall totals below the 30th percentile in January; within 30-70th percentiles in February, April, June, September, and October; and above the 70th percentile in March, May, July, August, November, and December (Figure 5). Annual 2020 rainfall total at the Porter Creek rain gauge was 73.21 inches. Porter rain gauge monthly totals were highest for the year in November while the PCS Aurora 6N rain gauge recorded its highest monthly total in August. Days of above normal rainfall (6 February through 9 March, 21 May through 27 June, 28 July through 28 August, and 12 November through 12 December) were excluded from hydroperiod calculations to compare with hydroperiods using all rainfall data. In 2019, monthly rainfall totals for January, February, April, June, July, and November through December were below the WETS 70th percentile (Figure 5); annual rainfall total at the Porter Creek rain gauge was 56.67 inches. Porter rain gauge monthly totals were highest for the year in August associated with heavy downpours while the PCS Aurora 6N rain gauge recorded its highest monthly total mostly due to Tropical Storm Dorian on September 6th. Days of above normal rainfall (13 April through 9 May, 12 July through 20 July, 24 July through 11 August, and 28 August through 27 September) were excluded from hydroperiod calculations to compare with hydroperiods using all rainfall data. In 2018, monthly rainfall totals for January, February, and March were below the WETS 70th percentile (Figure 6); the majority of the year was above the WETS normal range and annual rainfall total at the Porter Creek gauge was 67.61 inches. The wettest tropical cyclone on record in the Carolinas, Hurricane Florence (slow moving Category 1 storm), made landfall in Wrightsville Beach, NC on 14 September. Rainfall throughout Beaufort County was generally 4 to 8 inches with a storm rainfall total of 6.95 inches in Belhaven. The heaviest rainfall totals fell across the extreme southern part of the county which caused flash flooding in some locations. In 2017, monthly rainfall totals for January, February, October, and November were below the WETS 30th percentile (Figure 7); annual rainfall total at the Porter Creek gauge was 48.09 inches. April was the only month with total rainfall above the WETS normal range. A strong coastal low pressure system produced heavy rainfall and flash flooding from 23 April to 25 April. Based on the 30-day rolling total, rainfall from 24 April through 24 May was considered above normal. In 2016, monthly rainfall was greater in February, June, July, September and October when compared to the WETS percentiles (Figure 8); annual total rainfall at the Porter Creek gauge was 55.93 inches. Rainfall for March and mid to late August were below normal with the remainder of the year within WETS normal range. Hurricane Matthew, a Category 1 storm, made landfall in Cape Romain National Wildlife Refuge, SC on 8 October 2016. Above average rainfall spikes began in the PCS area on 7 October, coincident with arrival of the outer rain bands of the hurricane in North Carolina. There were M several periods of above normal rainfall that were excluded when hydroperiods were calculated for normal and below normal rainfall: 3 February through 5 March, 3 June through 5 July, 7-30 July, 11-30 September, and 7 October through 7 November. In 2015, monthly rainfall was greater in June, October, and late November through late December when compared to the WETS percentiles (Figure 9); annual total rainfall at the Porter Creek gauge was 58.96 inches. At the end of January and March, the 30-day rolling total was slightly above normal. Rainfall for the month of August was below normal and the rainfall for the remainder of the year fell within the WETS normal range. Periods of above normal rainfall included 3 June through 3 July, 2 October through 1 November, and 20 November through 20 December. For 2021, the US Drought Monitor (http://droughtmonitor.unl.edu) indicated eight weeks were considered abnormally dry (DO), 8 weeks were considered moderately dry (D1), and four weeks were considered severe drought (D2); the remaining weeks had no drought status in the vicinity of the Bonnerton Road NRHWF "135A" and "58A" project areas (Table 2). This is the highest record for number of weeks with a drought status since 2012. In 2020, the US Drought Monitor (http://droughtmonitor.unl.edu) indicated three weeks were considered abnormally dry (DO). In 2019, nine weeks were considered abnormally dry (DO) the highest record since 2015; the remaining weeks had no drought status in the vicinity of the Bonnerton Road NRHWF "135A" and "58A" project areas (Table 2; four years prior to 2015 are also shown). In 2018, one week was considered abnormally dry (DO). In 2017, five weeks were considered abnormally dry (DO). During 2016, three weeks in April were assigned drought condition (DO — Abnormally Dry) or 6 percent of the entire year and 7 percent of the 41-week growing season (Table 3). In 2015, all 41 weeks of the growing season were considered normal with no drought status. 3.3 Wetland Hydrology by Year 2021 All BHW and PCW well locations recorded wetland hydroperiods in 2021, even when periods of above normal were excluded (Tables 3a and 3b). Of the 14 BHW wells, all wells had hydroperiods for >12.5- 25.0 percent of the growing season during all rainfall conditions. Similarly, all six PCW wells had hydroperiods for >12.5-25.0 percent. From 2020 to 2021, four BHW wells decreased in hydrologic zones from the 25.0 to 75.0 percent of the growing season zone. Data for BHW8 are not available after 21 September 2021 due to permitted mine activities. When hydroperiods that occurred during above normal rainfall were removed (Figure 5), 18 wells recorded hydroperiods in the >6.0-12.5 percent of the growing season zone and 2 wells recorded hydroperiods in the >12.5-25.0 percent of the growing season zone. This represents a decrease in hydrologic zone from 2020 to 2021 for 19 of the wells. 2020 For 2020, 18 wells recorded wetland hydroperiods for 12.5 to 25.0 percent of the growing season and two wells increased in hydrologic zones to record wetland hydroperiods for 25.0 to 75.0 percent of the PEI growing season when periods of above normal rainfall were excluded (Table 3a). During all rainfall conditions four wells had hydroperiods for >25.0-75.0 percent of the growing season while all the other wells remained in the >12.5-25.0 percent range (Table 3b). Under all rainfall conditions, two wells changed from the >12.5-25.0 percent hydrologic zone to the >25.0-75.0 percent from 2019 to 2020. 2019 For 2019, all locations recorded wetland hydroperiods for 12.5 to 25.0 percent of the growing season when periods of above normal rainfall were excluded (Table 3a). During all rainfall conditions two wells had hydroperiods for >25.0-75.0 percent of the growing season while all the other wells remained in the >12.5-25.0 percent range (Table 3b). Under all rainfall conditions, four wells changed from the >25.0- 75.0 percent hydrologic zone to the >12.5-25.0 percent from 2018 to 2019. 2018 All BHW and PCW wells recorded wetland hydroperiods in 2018, even when periods of above normal were excluded (Tables 3a and 3b). Of the 14 BHW wells, eight wells had hydroperiods for >12.5-25.0 percent and six wells had hydroperiods for >25-75 percent of the growing season during all rainfall conditions. Similarly, all six PCW wells had hydroperiods for >12.5-25.0 percent. When hydroperiods that occurred during above normal rainfall were removed (Figure 5), six wells decreased from >25.0-75.0 percent to >12.5-25.0 percent of the growing season; all other wells maintained hydroperiods for >12.5-25.0 percent of the growing season. 2017 All well locations recorded wetland hydroperiods, even when periods of above normal were excluded (Tables B-1a and 1b, Appendix B). Of the 14 BHW wells, eight wells had hydroperiods for >12.5-25.0 percent and six wells had hydroperiods for >25-75 percent of the growing season during all rainfall conditions. Similarly, all six PCW wells had hydroperiods for >12.5-25.0 percent. When hydroperiods that occurred during above normal rainfall were removed, six wells decreased from >25.0-75.0 percent to >12.5-25.0 percent of the growing season; all other wells maintained hydroperiods for >12.5-25.0 percent of the growing season. 2016 The first full monitoring year for the 14 BHW wells was 2016. All well locations recorded wetland hydroperiods during the 2016 growing season (Tables B-1a and 1b, Appendix B). Of the 14 BHW wells, hydroperiods for eight wells were >12.5-25.0 percent and six wells were >25.0-75.0 percent of the growing season. Similarly, all six PCW wells had hydroperiods for >12.5-25.0 percent. When above normal rainfall was removed (Figure 6), only one well (PCW1) decreased from >12.5-25.0 percent to >_6.0-12.5 percent of the growing season during normal and below normal rainfall conditions. 10 2015 The 14 Bonnerton wells (BHW) were installed at the end of June 2015 and beginning of July 2015; the six upper Porter Creek (PCW) wells collected data all year. All 14 BHW wells exhibited wetland hydroperiods using all rainfall data between June and December and the six Porter Creek wells exhibited wetland hydroperiods between February and December (Tables B-1a and 1b, Appendix B). Among the 14 wells in the higher elevations of the hardwood flat, BHW6 had the longest hydroperiod of 23.8 percent of the growing season while longest hydroperiods at the remaining wells were in the range of >_6.0 - 12.5 percent of the growing season (Table 4b). The six wells in upper Porter Creek are located in somewhat lower elevations than some of the other 14 wells and using all 2015 rainfall data, longest hydroperiods were >12.5-25.0 percent of the growing season with PCW6 exhibiting the longest hydroperiod of 24.5 percent (Appendix B). When dates with above normal rainfall during 2015 (Figure 7) were removed and only normal and below normal rainfall periods are used for evaluation, three BHW wells did not exhibit any wetland hydroperiods between June and December (one of these four exhibited water within 12 inches of the surface but for less than 6 percent of the growing season), nine had longest hydroperiods in the range of >_6.0- 12.5 percent, and longest hydroperiod at one well was >12.5-25.0 percent (Table 4a). All six PCW wells had wetland hydroperiods in the range of >12.5-25.0 percent of the growing season during normal and below normal rainfall. 3.4 Mine Perimeter Deep Well Pump Operation and Near Surface Hydrology At agency request, PCS provided CZR information about the locations and dates of operation (turn -ON and turn -OFF dates) of pumps in deep wells around the Bonnerton Mod Alt L mine perimeter for analysis of potential effects on adjacent wetland hydrology attributed to the pump activity. Deep wells within an approximate half mile of the Bonnerton shallow wells and the months of pump activity in 2021 include: deep wells east of Bonnerton 1108 (off), 1109 (off), 1110 (off), 1111 (Jan -Sept); deep wells northwestern of Bonnerton 1125 (Jan -Mar), 1124 (Jan -Mar); and deep wells southwest of Bonnerton 1126 (Jan -Dec), 1127 (Jan -Dec), 1128 (Jan -Dec). As in previous years, deep well pump activity does not appear to affect water levels or hydroperiods at the wetland shallow monitoring wells (Figure 12). Water levels at Bonnerton respond to rainfall events and seasonal patterns (winter wet and lower levels after spring leaf -out and during the summer) much like those in other wetlands throughout the area. 4.0 Summary During 2015-2021 monitoring years, all 20 ground water monitoring wells exhibited wetland hydroperiods when all rainfall data are used to tabulate consecutive number of days of water levels above -12.0 inches (relative to ground surface) as shown in Table 4a. The 14 Bonnerton wells were not installed until June of 2015; after the period when longest hydroperiods are typically recorded. For years 2016-2021, all BHW and PCW wells exhibited wetland hydroperiods (greater than 12 percent), even when periods of above normal rainfall was excluded (Table 4a). 11 During the course of monitoring, relatively similar wetland hydroperiods have persisted in the Bonnerton non-riverine hardwood forest regardless of annual rainfall amounts, including periods of drought, and the operation of nearby deep well pump activity (Table 4b). 12 5.0 Literature Cited Kirby, Robert M. 1995. Soil Survey of Beaufort County, North Carolina. Natural Resources Conservation Service, United States Department of Agriculture. Soil Survey Staff. Undated. Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at http://websoilsurvey.nres.usda.gov/. Accessed [09/10/2012]. US Army Corps of Engineers. 2010. Regional supplement to the Corps of Engineers wetland delineation manual: Atlantic and Gulf coastal plain region. Version 2. J.S Wakeley, R.W. Lichvar, and C.V. Noble, eds. ERDC/EL TR-10-20, Vicksburg, MS. US Department of Agriculture, Natural Resources Conservation Service. 2010. Field Indicators of Hydric Soils in the United States, Version 7.0. L.M. Vasilas, G.W. Hurt, and C.V Noble (eds.) USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils. Zeileis, A (2016) dynlm: Dynamic Linear Regression. R package version 0.3-5. URL http://CRAN.R- proiect.org/package=dvnlm 13 LEGEND ® NON-RIVERINE WET HARDWOOD FOREST AREAS 135A AND 58A - 135A _ 2.100 0 2.100 Feet n i R i _ r �M1 e 3 f� i 401 Water Quality li ertification Conditions 9 and 13 Wetland Hydrology Monitoring PCS PHOSPHATE MINE CONTINUATION Scale: As shown Drawn b TLJ File' 174579/BONNERTON NRWHF 2021/ A -`.i,n'L5• •4�'_ _ _ ,-/ iS Date: 07/19/22 BONRTN_NRWHF_TOPO_2021 RPT 1 `, -'. *' �__� A Approved by: Figure 1 jg4k F-1 i ra IT �! � •� 1 md r. SOURCE: AERIALS PROVIDED BY: PCS PHOSPHATE COMPANY, INC. 1530 INC HIGHWAY 306 SOUTH, AURORA, NORTH CAROLINA 27806, 252-322-5121, DATE: JANUARY 9, 2022 .Wldk� LEGEND MODIFIED ALT L PERMIT BOUNDARY NON-RIVERINE WET HARDWOOD FOREST hL AREAS 135A AND 58A AVOIDED By PERMITTED MOD ALT L MINE BOUNDARY Bonnerton Non—Riverine Wet Hardwood Forest Areas Avoided by Mod Alt L PCS PHOSPHATE MINE CONTINUATION Scale: As shown Drawn by: TLJ 1,000 0 1,000 Feet e: 173579/60NNERTON NRWHF MON 2021/ Date: 07/19/22 BON RTN_NRWHF-AERIAL-2021 RPT Approved by: Figure 2 F-2 .F ;?�s��;,, ice• 'V, � ' �/- �•� �.r I f r 'UJI I. AX t -f `poop. —b SUUHCE: AERIALS PROVIDED BY: PCS PHOSPHATE COMPANY, INC. 1530 NC HIGHWAY 306 SOUTH, AURORA, NORTH CAROLINA 27806, 252-322-5121, DATE: JANUARY 9, 2022 1 LEGEND MODIFIED ALT L PERMIT BOUNDARY NON—RIVERINE WET HARDWOOD FOREST AREAS 135A AND 58A AVOIDED BY PERMITTED MOD ALT L MINE BOUNDARY SEMI —CONTINUOUS MONITORING WELL RAIN GAUGE NOTE: DATA FOR BHW8 ARE NOT AVAILABLE AFTER 09/21/2021 DUE TO PERMITTED MINE ACTIVITIES. �r c Bonnerton NRWHF Hydrology Monitoring Sifes PCS PHOSPHATE MINE CONTINUATION Scale: As shown Drawn by: TLJ 1,200 0 1,200 Feet y �y q ry r7 ry Ile: 174579/8OHNFRT0N NRWHF AION 2021/ D a f e: a 7/ 1 9/ L L 6NTRN_NRWHF_M0N_2021 RPT Approved by: Figure 3 F-3 LEGEND MODIFIED ALT L PERMIT BOUNDARY NON—RIVERINE WET HARDWOOD FOREST AREAS 135A AND 58A AVOIDED BY PERMITTED MOD ALT L MINE BOUNDARY SOILS SYMBOL SOIL NAME AaA ALTAVISTA FINE SANDY LOAM At AUGUSTA FINE SANDY LOAM Cf CAPE FEAR FINE SANDY LOAM [_e LEAF SILT LOAM Lo LEON SAND Me MUCKALEE LOAM Pe PERQUIMANS SILT LOAM Pt PORTSMOUTH LOAM Ro ROANOKE FINE SANDY LOAM Sb SEABROOK LOAMY SAND TOB TARBORO SAND To TOMOTLEY FINE SANDY LOAM W WATER BONNERTON NRWHF SOILS SOURCE: PCS PHOSPHATE MINE CONTINUATION AERIALS PROVIDED BY. PCs PHOSPHATE COMPANY, INC. 1530 NC HIGHWAY 306 SOUTH, AURORA, NORTH C a I e : As shown Drawn f, T LJ CAROLINA 27806, 252-322-5121, DATE: JANUARY 9, 2022 1,000 0 1,000 Feet F I e: 174579/BONNERTON NRWHF M0 2021/ SOIL SURVEY OF BEAUFORT COUNTY, NORTH CAROLINA, US DEPARTMENT Date: 07/1 9/22 D0NTRN_NRWHF_S0ILS_2021RPT OF AGRICULTURE NATURAL RESOURCES CONVERSATION SERVICE, ISSUED: SEPTEMBER 1995 Approved by: Figure 4 F-4 L-Z! 0 J dO� Q C o a a CL0 Q L - 2l o °' � Q a N N O r�4 fro O t MCD ry C o � - Q m L r�i �. 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I Sx e CL rG F O a � 1 �Q 47 fG cm L V 91 uw C QLQ S In In Q 4 4 + ra t Ln Bonnerton NRWHF Wetland Hydrology 2021 Update O N N -I O N \ c-I c-I c-I N O -I m Cn \ C L O C N O Q c ra L O Q W C lF N O d -I O N -I -I N L LL PCS Phosphate Company, Inc. August 2022 LEGEND ' +.:=; MODIFIE❑ ALT L PERMIT BOUNDARY NON-RIVERINE WET HARDWOOD FOREST - AREAS 135A AND 58A AVOIDED BY OW-1 120�. PERMITTED MOD ALT L MINE BOUNDARY DVky` r '- SEMI -CONTINUOUS MONITORING SHALLOW WELL 7i RAIN GAUGE DEEP WELL (STILL ON AT THE END OF 2021) DEEP WELL (OFF AT THE END OF 2021) rlm 7 ', {-�-� • - r� 1,200 0 1,200 Feet 'j;�.y. �• !-.t -�.. lL Fes. - �`�.��x�� •Jv- .;�:�,:F - .�•�-- � _ �;, Bonnerton NRWHF .; ;�: L� ',i, -r. ,..�, •: .� Hydrology Monitoring Sites and �j.IF Deep Well Locations isA, PCS PHOSPHATE MINE CONTINUATION SOURCE: Scale: As shown Drawn by: TLJ AERIALS PROVIDED BY: PCS PHOSPHATE COMPANY, INC. Date: 07/1 9/22 I B. SNTRN9NRWH FE_MON_ DE EPWELL-2021 RPT 1530 NC HIGHWAY 306 SOUTH, AURORA, NORTH CAROLINA 27805, 252-322-5121 , DATE: JANUARY 9, 2022 Approved by: Figure 12 F-12 DW 1108 — DW 1109 DW 1110 50 DWllll DW 1112 BHWlwasinstalled 25June2015 DW1113 DW 1114 40 DW 1115 DW 1116 DW 1117 DW 1118 DW 1119 30 DW 1120 DW 1121 11ZZZ DW DW 1123 DW 1124 DW1125 w 20 DW 1126 s DW 1127 u c DW 1128 s 10 a 0 w 0 m -10 _yJ L a0 L 4 I BHW 1— _40 2015 2016 2017 2018 2019 2020 2021 Year DW1108 — DW1109 D W 1110 50 DWllll D W 1112 D W 1113 40 D W 1114 BHW3wasinstalled 25June2015 DW1115 DW1116 D W 1117 D W 1118 D W 1119 D W 1120 30 D W 1121 D W 1122 D W 1123 D W 11267v1125 m 20 DW1126 w D W 1127 c D W 1128 t 10 a 0 0 A 3 -10 _29 _30 BHW3 -40 2015 2016 2017 2018 2019 2020 2021 Year D W 1108 — D W 1109 D W 1110 50 DWllll D W 1112 D W 1113 BHW2wasinstalled25June2015 DW1114 D W 1115 40 D W 1116 D W 1117 D W 1118 D W 1119 D W 1120 30 D W 1121 D W 1122 D W 1123 D W 1124 D W 1125 m 20 DW1126 w D W 1127 c D W 1128 t 10 a 0 w 0 A -10 -20 _30 BHW2 _40 2015 2016 2017 2018 2019 2020 2021 Year D W 1108 — D W 1109 D W 1110 50 DWllll D W 1112 D W 1113 D W 1114 D W 1115 40 BHW4was installed 18June2015 D 1116 D W 1118 D W 1119 30 D W 1120 D W 1121 D W 1122 D W 1123 D W 1124 DDW1126 N w 20 D W 1127 c D W 1128 t 10 a 0 0 A 3 -10 _29 _30 BHW4 -40 2015 2016 2017 2018 2019 2020 2021 Year Figure 13. 2015 — 2021 hydrology during deep well pump operations. Fourteen Level TROLLS were in proximity to the deep wells during the time the pump was in operation; horizontal bars at top right of graphs depict the period of pump operation. Bonnerton NRWHF Wetland Hydrology 2021 Update PCS Phosphate Company, Inc. F-13 August 2022 DW1108 — DW1109 DWll 50 DWllll — BHW5 was installed 30June DW1112 2015 DW1113 DW1114 40 DW1115 DW1116 DW1117 DW1118 DW1119 30 DW1120 DW11J 1122 DW1123 D 1124 w 20 DW DW11W1126 w DW 1127 u c DW1128 s 10 a w w 0 m -10 -20 -30 BHW5 -40 2015 2016 2017 2018 2019 2020 2021 50 40 30 w 20 s U C s 10 a w w 0 m -10 -20 -30 -40 2015 DW1108 DW 1109 DW 1110 DWllll DW 1112 Mill BHW7was installed 1July2015 DW1114 DW 1115 DW16 DW1117 DWW1118 DW 1119 DW11120 DW 116W 1122 DW 1123 DW 1124 DW1125 — DW 1126— DW 1127 DW1128— 2016 2017 BHW7 2018 2019 2020 2021 DW1108 — DW1109 DWll 50 DpWllll — BHW6wasinstalled 1July2015 DW1112 DW1113 DW1114 40 DW1115 DW1116 DW1117 — DW1118 DW1119 30 DW1120 DW1121 DW1122 DW1123 DW1124 DW1125 w 20 DW1126 w DW1127 c DW1128 s 10 a w w 0 m -10 -20 -30 BHW6 -40 2015 2016 2017 2018 2019 2020 2021 50 BHWBwas installed 1 July2015 40 30 w 20 s U C s 10 a w w 0 m -10 -20 -30 DW1108 DW 1109 DW 1110 DWllll DW 1112 DW 1113 DW 1114 DW 1115 DW1116 DW1117 DW 1118 DW 1119 DW 1120 DW 1121 DW1122— DW1123— DW 1124 -40 T 2015 2016 2017 2018 BHW8 2019 2020 2021 Figure 13 (continued). 2015 — 2021 hydrology during deep well pump operations. Fourteen Level TROLLS were in proximity to the deep wells during the time the pump was in operation; horizontal bars at top right of graphs depict the period of pump operation. Bonnerton NRWHF Wetland Hydrology 2021 Update PCS Phosphate Company, Inc. August 2022 F-14 DW1108 — DW1109 50 DW1110 DWllll DW1112 _ DW 1113 DW1114 40 BHW9was installed 30 June 2015 D W1115 DW1116 DW1117 DW1118 DW1119 30 DW1120 DW11DW1122 DW1123 DW1124 w 20 DW1125 DW1126 w DW1127 u C DW1128 s 10 a 0 w 0 m -10 _20 _30 BHW9 _40 2015 2016 2017 2018 2019 2020 2021 50 40 30 w 20 s U C s 10 a 0 w 0 m -10 _20 _30 _40 DW1108 — DW1109 DW1110 _ DWllll DW1112 DW1113 DW111VW-1115 .1116 B H W 10 we s installed 30 Ju ne 2015 DW1117 DW1118 DW1119 DW1120 DW114�1122 DW 1123 DW1124 DW1125 D DW1127 DW1128 AolI - BHW 10 2015 2016 2017 2018 2019 2020 2021 50 40 30 20 10 0 -10 _20 _30 _40 DW1108 — DW1109 DW1110 DWllll DW1112 DW 1113 DW 1114 BHW12 we s installed 30 June 2015 DW1115 DW1116 DW1117 DW1118 J9 kJ l l- BHW12 2015 2016 2017 2018 2019 2020 2021 Figure 13 (continued). 2015 — 2021 hydrology during deep well pump operations. Fourteen Level TROLLS were in proximity to the deep wells during the time the pump was in operation; horizontal bars at top right of graphs depict the period of pump operation. Bonnerton NRWHF Wetland Hydrology 2021 Update PCS Phosphate Company, Inc. August 2022 F-15 D W 1108 — D W 1109 D W 1110 50 DWllll D W 1112 D W 1113 BHW13was installed 30June 2015 DW1114DW1115 40 D W 1116 D W 1117 DW1118 DW1119 D W 1120 30 DWI IWI122 D W 1123 DW112�W1125 7 20 DW1126 L D W 1127 c D W 1128 t 10 a 0 w 0 A -10 _20 _30 BHW13 2015 2016 2017 2018 2019 2020 2021 D W 1108 — D W 1109 D W 1110 50 DWllll D W 1112 D W 1113 BHW14wasinstalled 18 June 2015 D W 1114 DW1115 40 D W 1116 D W 1117 DW1118 DW1119 D W 1120 30 D W I Iz1 D W 1122 D W 1123 D W 1124 7 20 D W 1125 DW1126 w D W 1127 c D W 1128 t 10 a 0 v 0 A -10 _29 _30 BHW14 2015 2016 2017 2018 2019 2020 2021 Figure 13 (concluded). 2015 — 2021 hydrology during deep well pump operations. Fourteen Level TROLLS were in proximity to the deep wells during the time the pump was in operation; horizontal bars at top right of graphs depict the period of pump operation. Bonnerton NRWHF Wetland Hydrology 2021 Update PCS Phosphate Company, Inc. F-16 August 2022 z_ 0 z of a a z_ x o v m m m .4 c4 m m .4 c4 o ry � 0 'o 0 O8< F o Bonnerton NRWHF Wetland Hydrology T-1 PCS Phosphate Company, Inc. 2021 Update August 2022 / -� ( 6 / _ < \ / 0 / a z e / \ e .¥ 5 / U E 2 \ \ / a / $ / % .\ •s 0 / \ \ u 2 i < u $ ƒ / 2 M % \ e / \ \ 2 e \ \ / E / = o = $ _ c: E _ & 0 / \ \ 0CU / \ } / / $ 2 / ƒ k E / 0 " 41 \ / ƒ 2 _ / w Ul 2 % / \ § / D 2 / \ / .\ \ ( { / \ E k $ U % } / \ » / \ 5 / E E e / ) ( CM ƒ / CO 7 \ / z / n e 7 / 2 m a e \ \ \ \ / \ 2 \ 0 o 2 / x x k 2 ± / \ = x:x:xx x xxxxx:xxxxxxxx a 0 Al o : ttflt ƒ TT, TTTF � \E 0/ o$ a:e:a a o r= Cl) m= e:a a= a a= CO. e 0 0) a:a:a(3) \2 \\a:aaKaaKQa \ k \ 2 b) ƒ (0 ee=_=22aaowe=aemmaw . a, aaa�:aa====a= / 9 / / / / / / / / § § §:§ § § § & & & & m:CO:mCO CO CO CO CO CO: mCOCOCO 2 CO .$ $§ g /�$M \\\Rk (n U) NN:\\$/$RRCl)Cl) § M © /\LL U) Ge ® S z $ ®U) = 2 0:0:0 o w r m a a o �:o o a== o a CD E ®a 2 a:m:a m e= a m Cl) m CO CO E 0 0 E = G w ==_g ��\\§aaaaaaaaaaaaaaaaaaaa M n mi c ®4 ® : o � a:m2 a am�rew00 m'qre % \4:4444444\\\:\\444444 $ I;I:I IIIIIIII I:I I o 0 0 0 0 0 I�I�I IIIIIIII ICI I E E E E E E Bonne«on NRW HF Wetland Hydrology 2021 Update T 2 PC Phosphate Company, Inc. August 2022 v .>_ c co L C la � C U " N O s a" O Ln N O M i U N C (0 >_ ul N N O C c N N O s C � N Ul U -0 O N Q N E O O O V (0 (0 � m � O � V N � L Z � co O O >_ L � O Ul O � (0 N � .� Q Q U O c Z O C U 0 L c-I O tn O 0- 0 0 0 0 0 s N O N m n o U o Ln oSZ NLN XXXXXXXXXXXXXXXXXXXX o a o jn N mo L O O O _j Al o o o 0 0 0 mo 15 o N ovoocochcococovooc0000—v VNc;t4 � N N p � U o L N a (6 rn rn N N W W (O O O V CO LO N N N (:7) r O O N O M CO N I-- W W W W 4 W M co, co, co, co, co, co, co, co, co, co, co, co, W Q N N N N 4 N N N N N N N N N N N N N N N N N N .-N _ N N N N N N N N N N N N N W W N N N N N L O N N Q O M M Q N Ll M M coO) co coO M V V V d) CO ��pp ��pp LLOO ��pp V O Q W >� V V V V V CO V V LO LO CO V V V V V V LO y6 N O O r r O O O � � O o U N m p `o _ CO V LOLO co0ov rnm ml-ovov O O O r V LO Lp I� O O r CO O V LO LO I� r r �i N N N 7 Ll W U M N O Q _ L y6 (V L N r r r r r r r r r r r r r r N r r r N N N N N N N N N N N N N N N N N N N N N N Q m m m m m m m m m m m m m m a a a a a a N 5 U N C E LD E O N D Bonnerton NRWHF Wetland Hydrology T-3 PCS Phosphate Company, Inc. 2021 Update August 2022 Table 4a. Summary of hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek during WETS normal or below normal rainfall from 2015 through 2021. Rainfall from NCAA station Aurora 6N/Gaylord Bay used for long-term percentiles and to determine periods of normal rainfall. (WH=wetland hydroperiod). Note: The longest hydroperiod at each well is depicted as a percentage of the 282-day (or 283-day for leap years) growing season when the water table was recorded as -12" or above. Also shown are total annual rainfall in inches and the percentage of weeks with a drought status of DO classification (abnormally dry) or drier in a year. #of Years % of Years with Well 2015" 2016 2017 2018 2019 2020 2021 WHfor All withWH Years BHW1 0.0 15.5 17.0 16.0 15.6 15.6 9.2 6 86 BHW2 0.0 16.3 18.8 16.3 15.6 16.3 9.6 6 86 BHW3 6.0 15.9 17.0 16.3 15.6 16.6 9.2 7 100 BHW4 0.0 15.9 17.0 16.3 15.6 16.6 9.2 6 86 BHW5 6.4 28.3 19.5 16.3 15.6 26.5 17.0 7 100 BHW6 6.4 29.0 19.5 16.3 15.6 22.3 13.5 7 100 BHW7 6.4 28.3 19.5 16.3 15.6 26.5 17.0 7 100 BHW8 6.4 15.5 19.5 16.3 15.6 17.3 7.8 7 100 BHW9 5.7 28.3 19.5 16.3 15.6 17.7 11.3 6 86 BHW10 6.0 25.4 19.5 16.3 15.6 17.3 11.3 7 100 BHW11 6.4 29.0 i 19.5 16.3 15.6 22.6 13.8 7 100 BHW12 6.0 16.3 18.8 16.3 15.6 17.0 9.6 7 100 BHW13 6.0 18.0 19.5 16.3 15.6 17.3 9.2 7 100 BHW14 6.0 18.0 18.4 16.3 15.6 17.0 9.2 7 100 PC1 23.0 12.4 16.0 16.0 15.6 14.1 7.8 7 100 PC2 23.0 15.5 16.7 16.3 15.6 16.3 9.2 7 100 PC3 23.0 14.8 16.3 16.0 15.6 15.6 8.2 7 100 PC4 23.8 15.5 18.4 16.3 15.6 17.0 7.8 7 100 PC5 23.8 16.3 18.8 16.3 15.6 17.3 11.3 7 100 PC6 24.5 15.5 18.8 16.3 15.6 17.3 9.6 7 100 Porter Creek Annual 58.96 55.93 48.09 67.61 56.67 73.21 51.04 - - Rainfall (in.) Drought Weeks (%) 0 6 10 2 17 6 38 Bonnerton wells were installed in June/July 2015, hydroperiods for 2015 may haw occurred prior to well installation. Data for BHW8 are not available ater 9/21/2021 due to permitted mine activities. Fill colors represent: >6.0-12.5 % >12.5 - 25 % -of the growng season. Bonnerton NRWHF Wetland Hydrology T-4 CS Phosphate Company, Inc. 2021 Update August 2022 Table 4b. Summary of hydroperiods for monitoring wells in and near Bonnerton NRWHF areas and upper Porter Creek independent of WETS thresholds from 2015 through 2021. Rainfall from NOAA station Aurora 6N/Gaylord Bay used for long-term percentiles and to determine periods of normal rainfall. (WH=wetland hydroperiod). Note: The longest hydroperiod at each well is depicted as a percentage of the 282-day (or 283-day for leap years) growing season when the water table was recorded as -12" or above. Also shown are total annual rainfall in inches and the percentage of weeks with a drought status of DO (abnormally dry) or drier in a year. Well 2015* 2016 2017 2018 2019 2020 2021 # of Years with WH BHW1 6.1 18.4 17.0 22.0 20.9 19.4 17.0 7 BHW2 6.4 19.1 18.8 22.7 21.3 20.1 17.4 7 BHW3 12.1 18.8 17.0 22.7 21.3 20.5 17.0 7 BHW4 6.4 18.8 17.0 22.3 21.3 20.5 17.0 7 BHW5 12.4 30.7 28.4 26.2 24.8 71.7 24.8 7 BHW6 23.8 31.4 36.5 44.7 25.2 26.2 21.3 7 BHW7 12.4 30.7 36.5 27.7 24.8 62.5 24.8 7 BHW8 12.4 18.4 28.0 26.2 22.7 21.2 15.6 7 BHW9 11.7 30.7 28.0 26.2 22.0 21.6 19.1 7 BHW10 12.1 27.9 23.0 23.0 22.3 21.2 19.1 7 BHW11 12.4 31.4 28.7 27.3 25.2 26.5 21.6 7 BHW12 12.1 19.1 18.8 22.7 21.3 20.9 17.4 7 B HW 13 12.1 20.8 23.0 23.4 22.3 21.2 17.0 7 BHW14 12.1 20.8 18.4 23.0 21.6 20.9 17.0 7 PCW1 23.0 14.8 16.0 21.3 19.9 18.0 15.6 7 PCW2 23.0 18.4 16.7 22.3 20.9 20.1 17.0 7 PCW3 23.0 17.7 16.3 21.6 19.9 19.4 16.0 7 PCW4 23.8 18.4 18.4 22.3 20.9 20.9 17.0 7 PCW5 23.8 19.1 18.8 22.3 21.3 21.2 19.1 7 PCW6 24.5 18.4 18.8 22.3 21.3 20.9 17.4 7 Porter Creek Annual 58.96 55.93 48.09 67.61 56.67 73.21 51.04 - Rainfall (in.) Drought Weeks (%) 0 6 10 2 17 6 38 * Bonnerton wells were installed in June/July 2015; hydroperiods for 2015 may have occurred prior to well installation. Data for BHW8 are not available after 9/21/2021 due to permitted mine activities. Fill colors represent: >6.0-12.5% > 12.5 - 25% >25 - 75% of the growng season. Bonnerton NRWHF Wetland Hydrology T-5 PCS Phosphate Company, Inc. 2021 Update August 2022 Table 5. Operation dates for the pumps within deep water wells surrounding the Level TROLLs in Bonnerton Hardwood Forest. Bold indicates earliest on date and latest off date of the deep well pumps for each creek. Deep Well Date Pump On Date Pump Off DW1108* DW1109 DW1110 DW1111 DW1124 DW1125 DW1126 DW1127 DW1128 October 2017/November 2019 February 2017 February 2017 April 2018 December 2019 May 2020 April 2020 May 2020 April 2020 August 2018/August 2020 May 2018 October 2018 September 2021 March 2021 March 2021 Still on Still on Still on Bonnerton NRWHF Wetland Hydrology T-6 PCS Phosphate Company, Inc. 2021 Update August 2022 APPENDIX A Soil Profile Descriptions at Bonnerton NRWHF and Upper Porter Creek Monitoring Wells Appendix A. Soil profiles at the 20 hydrology monitoring locations within and near the Bonnerton non-riverine wet hardwood forest that drains to upper Porter Creek (58A and 135A polygons). The eight wells shown with an ' are located within the 58A polygon; the six wells shown with " are located within the 135A polygon. Profiles described in December 2016 and March 2017. Well Depth (inches) Matrix Redox Features Texture Remarks Hydrologic Indicators Color % Color % Type' Locb BHW1' 0-6 10 YR 3/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 6 - 14 10 YR 6/1 75 10 YR 6/8 25 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 14 - 28 10 YR 7/1 60 10 YR 6/8 40 C M Sandy Clay Loam Not Saturated BHW2' 0-7 10 YR 4/1 100 Sandy Loam Not Saturated 7-15 10 YR 5/1 80 10 YR 5/8 20 C M Sandy Clay Loam Not Saturated Depleted Matrix (F3) 15 - 28 10 YR 5/1 70 10 YR 6/8 30 C M Sandy Clay Not Saturated 6HW3' 0 - 3 10 YR 3/1 100 Sandy Loam Not Saturated Depleted Matrix (F3) 3 - 22 10 YR 5/1 85 10 YR 5/8 15 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 22 - 28 10 YR 6/1 70 10 YR 6/8 30 C M Sandy Clay Loam Not Saturated BHW4' 0-6 10 YR 3/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 6 - 17 10 YR 6/1 95 10 YR 6/8 5 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 17 - 28 10 YR 6/1 65 10 YR 6/8 35 C M Sandy Clay Loam Not Saturated PCW3' 0 - 8 10 YR 3/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 8 - 22 10 YR 5/1 95 10 YR 5/8 5 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 22 - 28 10 YR 5/1 80 10 YR 5/8 20 C M Sandy Clay Loam Not Saturated PCW4' 0 - 4 10 YR 3/2 100 Sandy Clay Loam Not Saturated Depleted Matrix (F3) 4-30 10 YR 5/1 90 10 YR 5/8 10 C M Sandy Clay Loam Not Saturated Depleted Dark Matrix (A11) PCWS' 0-5 10 YR 3/2 100 Sandy Clay Loam Saturated Depleted Matrix (F3) 5-11 10 YR 5/2 90 10 YR 5/6 10 C M Sandy Clay Loam Saturated Depleted Dark Surface (A11) 11-14 10 YR 5/2 80 10 YR 5/6 20 C M Sandy Clay Loam Saturated PCW6' 0 - 4 10 YR 3/2 100 Sandy Clay Loam Not Saturated Depleted Matrix (F3) 4 - 18 10 YR 5/1 90 10 YR 5/8 10 C M Sandy Clay Loam Not Saturated Depleted Dark Surface (A11) 18 - 28 10 YR 5/1 65 10 YR 5/8 35 C M Sandy Clay Loam Not Saturated PCW1 0-7 10 YR 3/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 7-15 10 YR 4/1 95 10 YR 5/8 5 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 15 - 28 10 YR 5/1 90 10 YR 5/8 10 C M Sandy Clay Loam Not Saturated 0CW2 0-3 10 YR 3/2 100 Sandy Clay Loam Not Saturated Depleted Matrix (F3) 3-10 10 YR 4/1 90 10 YR 5/8 10 C M Sandy Clay Loam Saturated Depleted Dark Surface (A11) 10-30 10 YR 5/1 80 10 YR 5/8 20 C M Sandy Clay Loam Saturated BHW5 0-5 10 YR 3/1 100 Sandy Loam Not Saturated 5-9 10 YR 4/1 100 Sandy Clay Loam Not Saturated Depleted Matrix (F3) Depleted Dark Surface (A11) 9 - 25 10 YR 5/1 80 10 YR 5/8 20 C M Sandy Clay Not Saturated 6HW6 0 -3 10 YR 3/1 100 Sandy Loam Not Saturated 3-9 10 YR 4/1 95 10 YR 5/8 5 C M Sandy Loam Not Saturated Depleted Matrix (F3) 9 - 19 10 YR 5/1 80 10 YR 5/8 20 C M Sandy Clay Loam Saturated Depleted Dark Surface (A11) 19 - 28 10 YR 5/1 70 10 YR 5/8 30 C M Sandy Clay Loam Saturated 9HW7 0 - 8 10 YR 3/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 8-20 10 YR 5/1 90 10 YR 5/8 10 C M Sandy Clay Loam Not Saturated Depleted Dark Surface (A11) 20 - 28 10 YR 5/1 90 10 YR 5/8 10 C M Sandy Clay Loam Saturated BHW8 0-5 10 YR 3/1 100 Sandy Loam Not Saturated 5 - 17 10 YR 4/1 80 10 YR 5/8 20 C M Sandy Clay Loam Not Saturated Depleted Matrix (F3) Depleted Dark Surface (A11) 17 - 28 10 YR 4/1 65 10 YR 6 88 35 C M Sandy Clay Loam Not Saturated BHW9" 0 - 3 10 YR 3/1 100 Sandy Loam Not Saturated 3 - 12 10 YR 3/1 97 10 YR 6/8 3 C M Sandy Clay Loam Not Saturated Depleted Dark Surface (A11) 12 - 22 10 YR 4/1 95 10 YR 6/8 5 C M Sandy Clay Loam Not Saturated 22 - 28 10 YR 4/1 80 10 YR 6/8 20 C M Sandy Clay Loam Not Saturated BHW10" 0 - 8 10 YR 2/1 100 Sandy Loam Not Saturated 8 - 16 10 YR 3/1 50 10 YR 5/8 10 C M Sandy Clay Loam Not Saturated Depleted Matrix (F3) 10 YR 4/1 40 16 - 28 10 YR 5/1 45 10 YR 5/8 30 C M Sandy Clay Loam Not Saturated 6HW11" 0 - 3 10 YR 3/1 100 Sandy Loam Not Saturated 3-8 10 YR 3/2 100 Clay Loam Not Saturated Depleted Matrix (F3) 8 - 17 10 YR 4/1 100 Clay Loam Not Saturated Depleted Dark Surface (A11) 17 - 24 10 YR 4/1 95 10 YR 5/8 5 C M Clay Loam Saturated 24 - 28 10 YR 5/1 70 10 YR 5/8 30 C M Clay Loam Saturated 6HW12" 0 - 8 10 YR 2/2 100 Sandy Loam Not Saturated Depleted Matrix (F3) 8 - 14 10 YR 4/1 97 10 YR 4/6 3 C M Sandy Clay Loam Not Saturated Depleted Dark Surface (A11) 14 - 28 10 YR 5/1 60 10 YR 6/8 40 C M Sandy Clay Loam Saturated BHW13" 0 - 5 10 YR 3/1 100 Sandy Loam Not Saturated 5 - 14 10 YR 5/1 95 10 YR 4/6 5 C M Sandy Loam Not Saturated Depleted Matrix (F3) 14 - 20 10 YR 5/1 85 10 YR 5/8 15 C M Sandy Loam Not Saturated Depleted Dark Surface (A11) 20 - 28 10 YR 5/1 85 10 YR 5/8 15 C M Sandy Loam Saturated 6HW14" 0 - 7 10 YR 3/1 95 10 YR 4/6 5 C M Sandy Loam Not Saturated 7 - 18 10 YR 5/1 80 10 YR 4/6 20 C M Sandy Loam Not Saturated Depleted Matrix Depleted Dark Surfaccee (A11) 18 - 28 10 YR 4/1 60 10 YR 6/8 40 C M Lo Sandy Clay am Not Saturated a - Type: C= Concentration b - Loc: M = Matrix Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update A-1 August 2022 APPENDIX 6 2015-2020 Wetland Hydroperiods for Bonnerton NRWHF and Upper Porter Creek Monitoring Wells z 0 z 0 0 N R Ln CL N -c Ln N Ci Ln x x x x x Wx x x x x x x x xx bo C 11 0 ci Ln N. 0 11 . . . . . . 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N '-I N . . . . rl 'i rl � y ry N O7 Op N C a O 0 O O O T 41 0 a O p Ci o m �n ^ m m ,� ^ m^ m m 0 Ol Ol 00 Ol 0 L E J U N 3 N m W C.)C.)� to rl to l0 W Ol Ol N -ONO -ONO w � � � ob ob o o ^ ob 00 ob 00 ob ob ob ob i ob I ob I ob Nob ob ob 00 N N N N N > p 9 N m ti > o w o o °^ J _ V N 0 u° v m a �n 01 0 ^ w m�~ ti ti ti 3 3 3 3 3 3 3 3 3 N M. 1--U-UO U U U U a m m m m m m m m m m: m m m m Bonnerton NRWHF Wetland Hydrology PCS Phosphate, Inc. 2021 Update B-5 August 2022 F4 0 a 4" �n xx x x x x 00 N a O n a t o N N x x x x x x x x x x x x x x tlq C, rN-I n 0 O N � N O 0 U r Al C O � a T S o io V o 0 .r 3 a 0 0 a an >' a r1 oo oo n a n a n rn a ti Co Co Co a n a ti a T t � a m m m m o ri o m o n .-i m o o a m n m m m rl r-I r-I rl M : M M r-I M N M r-I N N r-I rl r-I r-I rl r-I cn N 00 t0 N 0 O o 0 a 0 0 T N 0 0 a 0 a N C N M M 0 7 m N O O N m m N O O m M O > 1 m m r r O l . 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CO 01 0 0) °m T . -I T r-1 io ao a a n a � s � a E � U N 3 m m m m N N N N � rl r-I r-I rl N l0 l0 l0 l0 l0 l0 l0 l0 7 171171171 N\^\^ ^� �� 7 0 0 0 \ ' r-I � l r-I 7' 7 7 r 00 \ \ \ \ \ M M M M N \ \ O O\ O \' 0 0 0 0 0 \ \\\ CO M CO lfl lfl I� N N \ N \ \ \ N 0 N Cb Cb Cb N N N N N N N N C, m a m a m m m a a a m m v M 00 mCO m io m m m m uj m m m ip 71 ip r1 ti ti O rl N r-I N r-I : rl r-I r-I rl r-I lfl r-I uj r-I rl 0) N r-I 0 O U r1 N m a �n io I ao rn° ti N m a S S S S S d d d d d d Am m m m m m m m m m m m m Bonnerton NRWHF Wetland Hydrology PCS Phosphate, Inc. 2021 Update B-6 August 2022 APPENDIX C January — December 2021 Hydrology Graphs NOTE: water levels greater than —30 inches below the ground surface exceed the length of the well casing for the shallow hydrology LevelTROLL monitors. Periods of horizontal water level shown on the hydrology graphs indicate the actual water level is deeper than that horizontal value. BHW1 Water Level Jan -Feb 2021, PCS Phosphate so 20 io — o R -io 3 _ -20 m -30 -ao Date .� .iaoner Ramn 2.5 2 1.5 t 1 ` 0.5 0 BHW1 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 s io 0 15s 0 a g 1 w x -20 m 0.5 -so ao 0 Date ,� .Pane reainran Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-1 August 2022 BHW1 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 c_ 0 1-5 s C J 0Ix a g 1 x -20 m 0-5 -30 ao 0 m m Date .errrv, .ron�rryi BHW1 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 r 10 0 1.5 t m -10 c g 1 — x -20 m 0.5 30 -40 0 < < < < < < < < < < < < < < < < c c c c c c m o o c c e Date .erm, .Portz rzamrau BHW1 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 - 0 1.5 i c J N -10 *AIEL Litta-`c Lg�n 1 � x -20 m 0.5 30 -40 0 c c c c c c c c c c c Date •&-M1N1 •POAcr Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-2 August 2022 BHW2 Water Level Jan -Feb 2021, PCS Phosphate so 20 io — o J -20 m -30 -ao a Date .errvrz .wooer lzamn BHW2 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 s fl 1-5 s J f 10 f � 1 � -20 m 0.5 31 40 0 a Daw -.2 •Pala Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-3 August 2022 BHW2 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 c — 0 1-5 t J 10 � i -20 m 0-5 -30 -40 0 a Date ..2 W.otl Ra .l BHW2 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 r 10 0 1.5 t c b -to 1 x -20 m 0.5 30 -40 0 < < < < < < < < < < < < < < < < c c c c c c c c e Date --2 •PoRx Ramiall BHW2 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 c - 0 1.5 r N -10 1 5 x -20 m 0.5 30 -40 0 c c c c c c c c c c c Date •&-M1N2 •POAcr Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-4 August 2022 BHW3 Water Level Jan -Feb 2021, PCS Phosphate 30 2.5 20 2 10 r c_ — 0 1.5 i -1 o 3 � -20 m 0.5 30 -a0 0 a Date .erma .wooer rzamfau BHW3 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 0 15s 0 m 1 ` rc -20 m 0.5 30 40 0 Dam •9FNJ3 •Potla Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-5 August 2022 BHW3 Water Level Jul -Aug 2021, PCS Phosphate 30 2.5 20 2 10 — 0 1-5 s C 10 a 1 ` -20 m 0.5 -30 ao 0 a Date .erma .Pane Ranra�i BHW3 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 10 r 1.5 T 0 d -10 1 -20 m 0.5 30 -40 0 c c c c c c m c c e Date .P,-ry3 .Pane aa:rt�i BHW3 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 c ^ fl 1.5 r c J � N _ -20 m 0.5 30 -40 0 Date •&-hN3 •POAer Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-6 August 2022 BHW4 Water Level Jan -Feb 2021, PCS Phosphate 30 20 10 r c o Date .4 .iaoner rzamn BHW4 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 0 15 s 0 a 1 c a _ -20 m 0.5 -30 -40 0 Dam •&iJJ4 .Pala Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-7 August 2022 BHW4 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 - 0 1-5 s C 10 a � 1 a a � _ -20 m 0-5 -30 -40 0 a Date ..4 W.on ..l BHW4 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 c " fl 1.5 i J � N m -10 `c 1 b _ -20 m 0.5 30 ao 0 c c c c c c c c c c c Date •&-M1N4 •POAcr Ralnfa 11 Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-8 August 2022 BHW5 Water Level Jan -Feb 2021, PCS Phosphate 30 3.5 20 3 to 2.5 t c — 0 2 V7 _ -20 1 m -30 0.5 -40 0 `a Date .arms .aorta raamrail BHW5 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 s m -10 c � 1 W _ -20 m 0.5 -30 40 D Dam •&iJJ5 •Paler Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-9 August 2022 BHW5 Water Level Jul -Aug 2021, PCS Phosphate 30 2.5 20 2 10 c " - 0 1.5 t id -10 N � _ -20 m 0.5 30 -n0 0 'a Date perms .ron�rr�i BHW5 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 10 — 0 1.5 t C � 1 � N � _ -20 m 0.5 -30 a0 0 c c c c c c tam •&iJJ5 •PORx Rainfall BHW5 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 - 0 1.5 t C J a -t0 C � 1 _ -20 m 0.5 -30 F 40 0 c c c c c c c c c c c Date �9FRN5 •POAcr Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-10 August 2022 BHW6 Water Level Jan -Feb 2021, PCS Phosphate 30 3.5 20 10 t c — 0 s J V L 10 N jp 1.5 C 00 -2a m 30illas 0 Date .eHws .Pang Ra:,ran - 3 BHW6 Water Level Mar- Apr 2021, PCS Phosphate 30 2.5 20 2 io IL C C -10 w 10 1 = 3 � -20 m 0.5 30 ao 0 < < < < < < < < < < < < < < < < m m m m m a a a a a a Date aenws .Porter Ramran BHW6 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 r to 0 1.5 t W -10 1 � -20 m 0.5 30 JAI Ill 40 0 Date ass .rang rzainran Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-11 August 2022 BHW6 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 c - 0 1.5 t -10 1 c -20 m 0.5 30 0- -a0 0 Date oeNws •Patla Ranfall BHW6 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 s 10 D 1.5 s C_ J d -10 �ro� 1 Cr _ -20 m 0.5 30 -0O 0 rn rn � O O Date .ei-nvs .Paflx r+ainrau BHW6 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 t 0 W -10 1 m x -20 m 0.5 -30 -40 0 Date .arms .Port�aa�rau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-12 August 2022 BHW7 Water Level Jan -Feb 2021, PCS Phosphate so 20 io — o J -10 -20 m -30 -40 a Date .� .iaoner Izamn BHW7 Water Level May - Jun 2021, PCS Phosphate so 2.5 20 2 s io fl 1.5 t J 10 � x -20 m D.5 -so IL -40 0 a Dam •&iJJ� •Pala Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-13 August 2022 BHW7 Water Level Jul -Aug 2021, PCS Phosphate 30 2.5 20 2 10 c_ — 0 1.5 t J 10 m x -20 m 0.5 -30 ao D a Date oerrrv� .Potla Ranfal� BHW7 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 10 r c '- - 0 1.5 t C -10 W 1 c _ -20 m 0.5 30- 0 0 c c c c c c Date .gryW� •Paler Ranfall BHW7 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 L 0 C -10 m i -20 m 0.5 30 F 40 0 c c c c c c c c c c c `` c c c e c c e Date .erm� .Poner rzainran Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-14 August 2022 BHW8 Water Level Jan -Feb 2021, PCS Phosphate 30 20 io L C - o J y; -10 -20 CO- 30 40 Date 'v .erma .aon�rza��r. BHW8 Water Level Mar- Apr 2021, PCS Phosphate 30 2.5 20 2 io L C 0 1.5 C J V -10 ° 1 m -20 0.5 30 40 0 - _ _ _ Date .eMva .Pon�rza��rau BHW8 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 'a0 1.5 t C e6 -10 1 m S rC 2 -20 m 0.5 30 -40 0 — — — — — — a Date .ei-nva .van�aa.r�i Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-15 August 2022 30 20 BHW8 Water Level Sep- Oct 2021, PCS Phosphate 2.5 2 m _ Data from BHWS 1.5 L 0 are not available � after 9/21/2021 10 due to permitted 1 mine activitiies of -20 m ❑.5 30 I 111 I. a0 Data oef d .'4n,. x'inrm BHW8 Water Level Nov - Dec 2021, PCS Phosphate 2.5 30 20 2 10 — 0 Data from BHW8 are not available 1.5 after9/21/2021 -_ due to permitted mine activitiies 1 -2a m 0.5 3a 0 -na Date oeFrrra .Ponerzaman Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-16 August 2022 BHW9 Water Level Jan -Feb 2021, PCS Phosphate 30 20 10 L C — o J -10 -20 CO -30 -40 Date a .9 .iaoner rzamn 2.5 2 1.5 t c A 1 0.5 0 BHW9 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 t 0 15 s 10 a � 1 w x -20 m D.5 -30 -40 0 a Dam •&iJJ9 •Pala Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-17 August 2022 BHW9 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 - 0 1-5 s C -10 a pprg 1 a _ -20 m 0-5 -s0 ao 0 a Date .errrve .Potla Ranfal� BHW9 Water Level Sept- Oct 2021, PCS Phosphate 31) 2.5 20 2 10 r c '- - 0 1.5 t C J -10 W 1 c -20 m D.5 30 41) 0 c c c c c c Date .9FiW9 •Paler Ranfall BHW9 Water Level Nov - Dec 2021, PCS Phosphate 31) 2.5 20 2 10 L 0 1.5 t C -10 m 3 � -20 m 0.5 30 -40 0 c c c c c c c c c c c Date .er - .Poner reainran Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-18 August 2022 BHW10 Water Level Jan -Feb 2021, PCS Phosphate 30 20 10 L C o } O_ -20 m 30 40 Date 'v .errxio .Potler aami BHW10 Water Level Mar- Apr 2021, PCS Phosphate 30 2.5 20 2 s — 0 1.5 J V -10 m � 1 C O_ 3 -20 m 0.5 30 -40 0 < < < < < < < < < < < < < < < < a4 i;j_ _ _ Date .etmio .Pon��mrau BHW10 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 L C — 0 1.5 t C J -10 9 1 12 0 -20 m 0.5 30 AD 0 a Date .ei-nvia .Parts r�mrau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-19 August 2022 BHW10 Water Level Jul - Aug 2021, PCS Phosphate 30 2.5 20 2 0 c — 0 1.5 s a 10 � � 1 � O_ �+ -20 m 0.5 -30 40 0 a Date .ei-nvio .Parts aa:rt�i BHW10 Water Level Sept- Oct 2021, PCS Phosphate 30 2.5 20 2 10 s 0 1.5 s R m -10 o Ild ta gi p i -20 m 0.5 -30 no 0 C C C C C C Date .ei-nvio .Panes aa��ran BHW10 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 t 10 0 1.5 t Q -10 1 c -20 2 m 0.5 -30 a0 0 c c c c c c c c c c c Date .ei+.vm .Poner rzamrau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-20 August 2022 BHW11 Water Level Jan -Feb 2021, PCS Phosphate 30 2.5 20 2 L C — 0 1.5 r C_ J V -10 � m 1 C 3: -26 2 0.5 36 4Q U 0 Date .�� •Porte eanrai BHW11 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 s 0 1.5 t J � N m -10 c � 1 � -20 m D.5 -30 40 D Date .ermn .Porte rzaimau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-21 August 2022 BHW11 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 c — 1.5 s C -20 m 0.5 30 -49 0 n n n m m v Date .errrvn .Pane aa..r�i BHW11 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 io r - 0 1.5 s 10 m 3 � 7+ -20 m 0.5 30 -40 0 c c c c c c Date .errrrn .caner fzanrai BHW11 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 L 0 15t c -10 m 3 � x -20 m 0.5 30 '0 0 c c c c c c c c c c c `` c c c e c c e Date .errwn .Poner reainran Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-22 August 2022 BHW12 Water Level Jan -Feb 2021, PCS Phosphate 30 2.5 20 2 10 L C — o 1.5 r C_ J V -10 � m 1 C N -26 2 0.5 36 AD 0 a Date ,-12 •Porte Ra M BHW12 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 s 0 1.5 s J -10 1 K -20 I m D.5 -30 40 D i7i �q �5 S2 7� Date --12 .Porte rzaimau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-23 August 2022 BHW12 Water Level Jul - Aug 2021 PCS Phosphate 30 2-5 20 2 c — 0 1.5 s -io 1 a N � -20 m 05 30 -40 fl 'a Date ..12 .Parte..l BHW12 Water Level Sept - Oct 2021, PCS Phosphate 30 2.5 20 2 10 r — 0 1.5 r J N 10 1 § g" w N_ 7+ -20 m 0.5 30 -40 0 rn rn rn C Dam •gF1J112 •Pa.el Hanfall BHW12 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 L 0 15 r c J N 10 � � 1 N_ -20 m 0.5 30 'o _ _ _ _ _ _ _ _ _ _ _ 0 49 C Date .er1w12 -IM- -11-H Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-24 August 2022 BHW13 Water Level Jan -Feb 2021, PCS Phosphate 30 2-5 20 2 10 r c_ — 0 1.5 i -10 10 1 3 M 3 -20 m 0.5 -30 ao 0 Date .9FiW13 .ronx Rarnati BHW13 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 — 0 15s J W -10 1 w -20 m 0.5 -30 ILLL -n0 0 a �� .R}RH13 •Pane Rainfall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-25 August 2022 BHW13 Water Level Jul -Aug 2021, PCS Phosphate 30 2.5 20 2 10 — 0 1-5 s W -10 1 A -20 m 0.5 30 -no 0 a Date o9fiW13 •Po2v Ranfall BHW13 Water Level Sept- Oct 2021, PCS Phosphate 30 2.5 20 2 s 10 0 1.5 t A -10 1 c m � -20 I m 0.5 -30 -40 11 0 c c c c c c rn rn rn 63 63 63 63 Date •&hY 13 •PaRa Rahfall BHW13 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 10 t c m — 0 1.5 t R -10 1 c m � -20 m 0.5 -30 ao 0 c c c c c c c c c c c Date •PHW13 •Poler Ralniall Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-26 August 2022 BHW14 Water Level Jan -Feb 2021, PCS Phosphate 30 20 10 r c o Date ,ermia .tune Ram BHW14 Water Level May - Jun 2021, PCS Phosphate 30 2.5 20 2 10 — 0 L 15 s W v K _ -20 m D.5 -30 -40 0 a Date .er 1 .Pone Ramiau Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-27 August 2022 BHW14 Water Level Jul -Aug 2021, PCS Phosphate 30 2-5 20 2 10 m — 0 1-5 s W -10 1 a v Ix _ -20 m 0-5 30 A" ALI0 a Date oeriwia .Porte a�..r�i BHW14 Water Level Sept- Oct 2021, PCS Phosphate 30 2.5 20 2 10 s 0 1.5 t A -to- 20 m 0.5 _30 -40 0 c c c c c c Date .errrvia .Portz rzamrau BHW14 Water Level Nov - Dec 2021, PCS Phosphate 30 2.5 20 2 "� 10 c m — 0 1.5 t R -10 1 c v � _ -20 m -30 0.5 40"_0 c c c c c c c c c c c Date --14 .Pon--11-H Bonnerton NRWHF Wetland Hydrology PCS Phosphate Company, Inc. 2021 Update C-28 August 2022