Nitrate Source Investigation - Kansas Environmental Systems
Transcription
Nitrate Source Investigation - Kansas Environmental Systems
Curtis State Office Building 1000 SW Jackson, Suite 410 Topeka, Kansas 66614-1367 Kansas Department of Health and Environment Nitrate Source Investigation Park PWS #1 Site Park, Kansas Bureau of Environmental Remediation Nitrate Source Investigation Park PWS #1 Site Park, Kansas Prepared by: Kansas Department of Health and Environment Bureau of Environmental Remediation Remedial Section State Water Plan Program Date: August 2010 State ID: C6-032-70142 Project Manager: Jon Vopata, Environmental Scientist II Field Team Members: Mike LaBuda, Environmental Technician IV i TABLE OF CONTENTS 1.0 INTRODUCTION................................................................................................. 1 2.0 SITE DESCRIPTION AND LOCATION .......................................................... 1 3.0 SITE BACKGROUND ......................................................................................... 1 3.1 3.2 4.0 4.1 4.2 4.3 ELEVATOR FACILITIES .............................................................................. 1 HISTORY OF NITRATE SAMPLING AT THE PARK PWS #1 SITE..... 3 PHYSICAL SETTING ......................................................................................... 3 LAND USE ........................................................................................................ 3 SITE GEOLOGY.............................................................................................. 4 HYDROGEOLOGY ......................................................................................... 4 5.0 TARGETS ............................................................................................................. 4 6.0 ASSESSMENT ACTIVITIES.............................................................................. 4 6.1 6.2 6.3 7.0 7.1 7.2 DESCRIPTION OF FIELD ACTIVITIES .................................................... 4 SAMPLING PLAN DEVIATIONS................................................................. 6 QUALITY ASSURANCE AND QUALITY CONTROL.............................. 6 ASSESSMENT RESULTS................................................................................... 6 SOILS................................................................................................................. 6 GROUNDWATER............................................................................................ 7 8.0 CONCLUSIONS/RECOMMENDATIONS ....................................................... 7 9.0 REFERENCES...................................................................................................... 9 10.0 APPENDICES ..................................................................................................... 10 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 Tables Figures Interview/Information Request Documentation Photographic Documentation Field Notes Access Agreements Utility Clearance Analytical Reports ii 1.0 Introduction On March 15-17, 2010 the Kansas Department of Health and Environment (KDHE) conducted a Nitrate Source Investigation at the Park PWS #1 Site in Park, Kansas. The Source Investigation (SI) included the collection of soil and groundwater samples in the vicinity of the Park PWS #1 Site. The primary objectives of the SI were to: • Identify nitrate impacts to soil and groundwater in the vicinity of Park, Kansas. • Determine if nitrate impacts to groundwater are attributable to non-point sources or point sources and specify the point sources for nitrate contamination. 2.0 Site Description and Location The City of Park is located in Gove County in northwestern Kansas in the High Plains section of the Great Plains physiographic province. The Park PWS Well #1 Site is located in the vicinity of Fourth Street and Elm Street. The legal description of the site is the NE ¼ of the NE ¼ of the SW ¼ of Section 7, Township 11 South, Range 27 West. Geographic coordinates of the site are 39o 06’ 40.5” north latitude and 100o 21’ 46.0” west longitude. The city of Park is a rural agricultural community with a population of approximately 150. 3.0 Site Background 3.1 Elevator Facilities The Park PWS #1 Site includes two elevator facilities identified as potential sources for nitrate contamination and the subject properties of the Nitrate Source Investigation. The property (land) on which the elevator facilities are situated is owned by the Union Pacific Railroad and leased to companies who manage or sublease the elevator facilities (structures) on the property. The ‘East’ former elevator facility located at 504 S. Cedar is currently owned by The Scoular Company and subleased to Hi-Plains Coop who operates the facility. The ‘West’ former elevator facility located at 502 W. 5th, Railroad Right-away is currently operated and owned by Frontier Ag Inc. Refer to Figure 1 depicting the ‘East’ and ‘West’ elevator facilities. Brief histories of the ‘East’ and ‘West’ elevator facilities are provided below. ‘West’ Midwest/Frontier Ag Elevator Facility ‘East’ ADM/Heinrich/Hi-Plains Elevator Facility Robinson Milling Company: 1914?-1967 Smoot Grain: 1967-1973 ADM purchases Smoot Grain: 1973 Anhydrous ammonia bulk tank installed: ~1976 ADM acquires Collingwood Grain: 1990 Collingwood merges operations with Smoot: 1995 Collingwood Grain is sold to Heinrich Feeds: 1998 Hi-Plains Coop purchases Heinrich Feeds: 2009 Anhydrous ammonia bulk tanks removed: 2009 Midwest Coop – 1970?- 2007 Anhydrous ammonia bulk tank installed: ~1991 Anhydrous ammonia bulk tank removed: ~2003 Frontier Ag – 2007 to Present 1 Information provided in the above timelines was gathered from historical records and interviews with previous facility operators. Additional information gathered from interviews with former elevator facility operators is summarized below. Copies of KDHE information request letters, responses, and interview documentation is provided in Appendix 10.3. ‘West’ Midwest/Frontier Ag Elevator Facility Midwest Coop acquired the facility from the Gove County Coop some time around 1970. The Midwest Coop never stored, used, or sold liquid or dry fertilizer at their facility in Park, Kansas, however on rare occasions 1,000 gallon or less prefilled liquid nitrate nurse tanks from Quinter were staged on the property for same day pick-up by local farmers. A 12,000 gallon bulk anhydrous ammonia tank was installed west of the office building by Midwest coop in about 1991. Anhydrous ammonia was received by semi-truck and transferred to nurse tanks for distribution. Anhydrous ammonia was transferred through above ground pipelines and hoses at the bulk tank. There were no known spills or releases of anhydrous ammonia or fertilizers at the Midwest Coop facility in Park. The anhydrous ammonia tanks were removed from the Midwest Coop facility in about 2003 when Midwest sold all assets including the anhydrous ammonia to CHS. Frontier Ag purchased the Midwest Coop facility in Park, Kansas in 2007. When purchased and since then there has been no anhydrous ammonia, liquid, or dry fertilizers stored, used, or sold on the property. ‘East’ ADM/Heinrich/Hi-Plains Elevator Facility No liquid or dry fertilizers were stored, used, or sold by ADM (Archer Daniels Midland) Collingwood Grain at their facility in Park, Kansas. A 12,000 gallon bulk storage anhydrous ammonia tank was installed by ADM/Collingwood in approximately 1976. A second 12,000 gallon bulk storage anhydrous ammonia tank was installed in approximately 1994. Anhydrous ammonia was primarily received by truck, occasionally received by railcar, and transferred into the bulk anhydrous ammonia storage tank. The anhydrous ammonia was transferred to 1,000 gallon mobile nurse tanks and distributed to farmers for field applications. Anhydrous ammonia was transferred through above ground pipelines and hoses. No underground piping was used to transfer anhydrous ammonia. A former employee of Collingwood recalled one instance where an above ground leak of anhydrous ammonia occurred but was quickly repaired within the hour. In 1998 Heinrich Feeds purchased the Collingwood grain facility including the two 12,000 gallon bulk storage anhydrous ammonia tanks and ten 1,000 gallon trailer nurse tanks. No liquid or dry fertilizers were stored, used, or sold by Heinrich Feeds at their facility in Park, Kansas. Anhydrous ammonia was received by tractor-trailer tank trucks, stored in the 12,000 gallon bulk tanks, and used to refill trailer nurse tanks for delivery to farm customers. The anhydrous ammonia was transferred at the loading riser located in the middle of the two 12,000 gal bulk storage tanks. Anhydrous ammonia leaks or releases occurred when receiving loads from tractor-trailer tank trucks and when loading 1,000 gallon trailer nurse tanks. The releases occurred at the end of unloading tractortrailer tank trucks or unloading 1,000 gallon trailer nurse tanks, while releasing the 2 pressurized vapor a small amount of liquid was normally discharged, assumed to be one pound or less. The release occurred at the loading riser and at the valve at the end of the above ground pipeline. In March 2009, The Scoular Company purchased the Heinrich Feeds facility in Park, Kansas. The Scoular Company did not purchase the two 12,000 gallon bulk anhydrous ammonia storage tanks. These were sold separately and removed from the property prior to May 1st, 2009. The facility currently operates as the Hi-Plains Coop where no dry, liquid, or anhydrous ammonia fertilizers are stored, used, or sold. A review of Kansas Department of Agriculture, Pesticide and Fertilizer Program inspection files indicate: the Midwest Coop anhydrous ammonia tanks were inspected in 2003 with no major infractions noted; the Heinrich Feeds anhydrous ammonia tanks were inspected in 2008, 2007, 2006, 2005, 2004, and 2003 with no major infractions noted. No information was provided in the inspection files regarding Smoot, Collingwood, or ADM facility operations at the ‘East’ facility. There was no evidence of liquid or dry fertilizer storage, use, or distribution at either the ‘East’ or ‘West’ facilities provided in the inspection reports. A review of the KDHE spills data base indicate that no anhydrous ammonia or fertilizer spills were reported to KDHE in the vicinity of the Park PWS #1 Site. 3.2 History of Nitrate Sampling at the Park PWS #1 Site Long-term Monitoring (LTM) sampling conducted from 1996 to 2008 identified nitrate concentrations exceeding the MCL in monitoring wells MW-1S, MW-3S, and MW-10S. These results are summarized in Table 1. In May 2009 a Comprehensive Sampling Event was conducted at the Park PWS #10 Site. KDHE sampled Park PWS well #1, monitoring wells of the Park PWS #1 Site, monitoring wells of the Mardain Motors LUST Site, two domestic wells upgradient of the Park PWS #1 Site, and one irrigation well upgradient of the Park PWS #1 Site. Analytical results indicated nitrate levels exceed the MCL in seven monitoring wells and one private well. Nitrate analytical results from the Comprehensive Sampling Event are provided in Table 2 and depicted on Figure 2. Based on the results of the 2009 Comprehensive Sampling Event it was recommended an investigation be conducted to determine the source of nitrate contamination at the Park PWS #10 Site. 4.0 Physical Setting 4.1 Land Use The subject property consists of two agricultural supply and grain elevators facilities used for the storage and shipment of grain. The two subject elevator facilities are separated approximately 500 feet by a roadway, single grain elevator, and vacant property. Rail lines of the Union Pacific Railroad abut the subject elevator properties to the south. Further south are State Highway 211, two commercial properties, and agricultural fields. The city of Park is immediately northeast of the subject properties. The area surrounding 3 the subject properties to the northwest, southwest, and southeast is predominantly agricultural fields. 4.2 Site Geology The site is located in the High Plains section of the Great Plains physiographic province. The Peoria and Loveland Formations consisting of late Pleistocene eolian silt, clay, and sand, cover the site to a depth of approximately 45 feet below ground surface (bgs). Underlying the Peoria and Loveland Formations, from approximately 45-155 feet bgs, is the Ogallala Formation of Pliocene Age. The Ogallala consist chiefly of sand, gravel, silt, and clay and is the principal aquifer in north and west central Gove County. The Ogallala is underlain by the Smoky Hill Chalk member, a confining bed of the Niobrara Chalk. The Smoky Hill Chalk is a light to dark gray chalk and chalky shale, generally thinbedded and platy. Site geology described during the 1996 well installations is summarized below. 0-40 ft Clay (firm-hard) 40-125 ft Sand (fine-course) 125-135 ft Clayey Sand (very dense) 135 ft Caliche (~1’ thick, very hard) 136-155 ft Silty Sand (dense) 155 ft Shale Bedrock 4.3 Hydrogeology The Ogallala aquifer is the primary source of groundwater in the vicinity of the site. Groundwater is encountered from approximately 105 feet (the top of the groundwater table) to 155 feet (the base of the Ogallala aquifer). The groundwater table flows generally northeast with a gradient of approximately 0.3 feet per 100 feet. 5.0 Targets The primary target identified is Park PWS well #1. The PWS well #1 is equipped with a carbon treatment system to remove volatile organic contamination (VOCs) from the groundwater. There is currently no treatment system installed on PWS well #1 to address nitrate related contamination. No private domestic wells in the vicinity of the site have been identified as targets for nitrate contamination. All residences within the city of Park obtain their drinking water from the Park PWS #1 well system. 6.0 Assessment Activities 6.1 Description of Field Activities On March 15, 2010, the KDHE field sampling team (Jon Vopata and Mike LaBuda) arrived at the Park PWS #1 site and met with Kerry Billinger at the Park city building to review the city of Park sanitary sewer and water line plat maps. The field sampling team then located and marked city sewer and water lines, located other marked utilities, and 4 completed a utility clearance checklist. Utility clearance documents are provided in Appendix 10.7. Utilizing a 6600 Geoprobe, the KDHE field sampling team initially attempted to collect groundwater samples from two sample locations. GW-1 located along State Highway 211 upgradient of the subject properties and GW-2 located at the ‘East’ elevator facility. At groundwater sample location GW-1 refusal was encountered at 65 feet bgs with no groundwater available for sampling. Groundwater sample location GW-2 was probed to 110 feet below ground surface (near refusal) where one groundwater sample was obtained for nitrate analysis. The Geoprobe rods could not be extracted from probe location GW-2 and were later plugged in place by KDHE, see memorandum ‘Plugging in Place of Geoprobe Rods, Park PWS #1 Site’ dated August 2010. Due to difficulties in extracting the Geoprobe rods, no other Geoprobe groundwater sampling was attempted during the Nitrate Source Investigation. Groundwater sample locations GW-1 and GW-2 are depicted in Figure 3. The 6600 Geoprobe was used to collect soil cores from surface to five feet bgs at 20 sample locations at the ‘East’ and ‘West’ elevator facilities. Each soil core was collected using decontaminated Geoprobe macrocore samplers and new 5-ft acetate sleeves. A manual hand auger and trowels were used to collect soil samples at 5 soil sample locations (SP-3, SP-18, SP-19, SP-20, and SP-21) not accessible to the 6600 Geoprobe. The decontaminated auger was used to excavate a hole to the desired sampling depth then a decontaminated hand trowel was used to collect a soil sample into new Ziploc plastic bags. Soil sample locations are depicted on Figure 3. All soil cores and soil bags collected were immediately labeled and samples were quickly collected for field screening analysis. Soil samples were field screened for nitrates using EM Quant® nitrate (NO3-) test strips following KDHE SOP BER-31-4 Merckoquant Nitrate Test Strips. Based on the qualitative field screenings, select soil samples were collected in laboratory supplied glass jars for off site laboratory analysis. The soil sample jars were immediately labeled and placed in an ice filled cooler for transport to the KDHE environmental laboratory. Before departing the site on March 17, 2010 the KDHE field sampling team collected groundwater samples from site monitoring well MW-3S and Anthony Feldts domestic well for nitrate analysis. Also, all soil and groundwater sample locations were GPSed using a Thalus Mobile Mapper GPS unit. On April 13th, 2010 Jon Vopata returned to the Park PWS #1 Site to conduct LTM sampling. LTM sampling activities included the collection of groundwater samples from the nine Park PWS #1 site monitoring wells and PWS well #1. In addition to well sampling, Jon Vopata also collected a deeper soil sample (4 feet bgs) from SP-3 using the same manual soil sampling techniques previously described. LTM sample locations are depicted on Figure 3. 5 6.2 Sampling Plan Deviations Soil and groundwater sample locations were chosen in the field by the project manager based on field observations made on site. Only two groundwater sample locations were attempted and only one groundwater sample was collected utilizing the 6600 Geoprobe. No other groundwater samples were attempted with the Geoprobe due to difficulties in extracting rods and time constraints. No soil samples were collected for VOC analysis during the Nitrate Source Investigation. 6.3 Quality Assurance and Quality Control All relevant Standard Operating Procedures (SOPs) and the KDHE approved Quality Assurance Project Plan (QAPP) were followed during field sampling activities. All reusable sampling equipment was thoroughly decontaminated with a soap-water wash and de-ionized water rinse after each use. Laboratory samples were placed in labeled and appropriate sample containers immediately following collection. Samples were preserved in an ice filled cooler. Chain of custody procedures were observed thru sample submission to the laboratory. Sample analysis was performed by the KDHE Department of Health and Environmental Laboratories (DHEL). 7.0 Assessment Results 7.1 Soils ‘West’ Midwest/Frontier Ag Elevator Facility Soil samples collected at the former Midwest Coop facility (west elevator) were focused around the former bulk anhydrous ammonia storage tank and old storage building. Qualitative field screening results suggested little or no nitrate impacts to soils around the ammonia tank and building. Laboratory analytical results from selected soil samples SP3, SP-4, SP-7, and SP-16 confirmed the low to negligible nitrate in soils at these locations. Field screening results of soil sample SP-12 collected along the truck scale at the former Midwest Coop facility (west elevator) suggested nitrate impacts to soil. The off site laboratory analytical result of soil sample SP-12 (68.18 mg/Kg) confirmed the elevated nitrate concentration in soil at this location. Nitrate analytical results in soil at the west elevator facility are provided in Table 3 and depicted in Figure 4A. ‘East’ ADM/Heinrich/Hi-Plains Elevator Facility Soil samples collected at the former ADM/Collingwood Grain, Heinrich Feeds, and currently Hi-Plains Coop (east elevator) were focused around the former anhydrous ammonia nurse tank parking area and bulk anhydrous ammonia tanks. Qualitative field screening results from samples collected in the nurse tank parking area (SP-1 and SP-2) suggested little to no nitrate impacts. These low nitrate impacts were confirmed by laboratory analysis of sample SP-2 (5.3 mg/Kg). Soil samples collected in the vicinity of the former bulk anhydrous ammonia tanks at the east elevator facility indicated qualitative field screening results suggesting substantial nitrate impacts to soils. Soil samples SP-18 (894 mg/Kg), SP-19 (224 mg/Kg), SP-23 6 (57.93 mg/Kg), and SP-25 (450 mg/Kg) confirmed the elevated nitrate concentrations in soils in the vicinity of the former bulk storage tanks. Nitrate analytical results in soil at the east elevator facility are provided in Table 3 and depicted in Figure 4B. 7.2 Groundwater Upgradient groundwater sample location GW-1 was attempted but was unsuccessful as refusal was reached at 65 feet below ground surface. A groundwater sample collected from Butch’s domestic well (2.7 mg/L) and 2009 upgradient groundwater sampling of Kinderknecht irrigation well (3.6 mg/L), Kinderknecht domestic well (5.3 mg/L), and Riedel’s domestic well (11 mg/L) all indicate groundwater nitrate analytical results near or below the MCL of 10 mg/L. Groundwater samples collected from probe location GW-2 (12 mg/L) and shallow monitoring wells MW-1S (130 mg/L), MW-3S (23 mg/L), MW-9S (19 mg/L), and MW10S (24 mg/L) all indicate nitrate concentrations exceeding the MCL of 10 mg/L. Groundwater samples collected from PWS well #1 (7.5 mg/L) and deep monitoring wells MW-1D (3 mg/L), MW-2D (2 mg/L), MW-3D (2.1 mg/L), MW-9D (3.2 mg/L), and MW-10D (3.2 mg/L) all indicate nitrate concentrations below the MCL. These groundwater results suggest nitrate impacts to shallow groundwater persist at the west elevator facility, east elevator facility, and down gradient of these facilities. Groundwater analytical results are summarized in Tables 1, 2, 4 and depicted on Figure 5. 8.0 Conclusions/Recommendations Nitrate exceeded applicable standards for soil and groundwater at the west elevator facility. Groundwater has been consistently above the MCL of 10 mg/l in a shallow monitoring well (MW-1S) located just north of the west elevator. The deep monitoring well in this area (MW-1D) has been below 3 mg/l for six sampling events since 1999. The presence of nitrate in the shallow part of the aquifer is indicative of a nearby source of nitrate. Soil sampling conducted west of the west elevator identified slightly elevated (68.18 mg/kg) nitrate at sampling point SP-12. This sampling point is located adjacent to the truck scale at the west elevator facility. Based on the preliminary field results and information gathered during various interviews conducted by KHDE, the most likely sources of nitrate contamination would be from a leaking anhydrous ammonia nurse tank or leaking liquid nitrate nurse tank staged on the property, likely during Midwest Coops ownership (1970? to 2007). Nitrate exceeded applicable standards for soil and groundwater at the east elevator facility. Groundwater has been consistently above the MCL of 10 mg/l in MW-3S (23 mg/l), MW-10S (24 mg/l), and MW-9S (19 mg/l). Monitoring wells located in the deeper zones were consistently less than 3 mg/l which is indicative of a nearby source of nitrate. Soil sampling conducted just west of the elevator in the vicinity of bulk anhydrous ammonia tanks identified a source area. Nitrate concentrations in soil ranged from 48.5 mg/kg to 894 mg/kg, with the highest concentration at the ground surface which is likely from leaks/spills in this area. Potential responsible parties for this contamination include ADM/Collingwood Grain and Heinrich Feeds since both operated the bulk anhydrous 7 ammonia tanks and interview documentation suggests releases at the facility during both operations. Historical VOC contamination from the east elevator has impacted Park PWS well #1 which is being addresses by the KDHE Underground Storage Tank Program. A treatment system at Park PWS well #1 currently treats any possible VOC contamination present in the water; however this system is not effective on nitrate contamination. Although PWS well #1 is not impacted by nitrate (7.5 mg/l) above the MCL the potential exist for future impact to PWS well #1 by nitrate contamination in the groundwater. Based on the presence of elevated nitrate in groundwater and soil, the potential threat of nitrate contamination to the Park PWS well #1, the identification of source areas, and the documentation of potentially responsible parties, it is recommended that site be officially transferred from the Orphan Sites Program to an appropriate State Response Program. 8 9.0 References Geotechnical Services Inc., May 1996, Site Assessment at State Trust Fund Sites: Mardain Motors KDHE Project Code U6032505, FDIC Club KDHE Project Code U6032521 GSI Project No. 2311097, and State Water Plan Site: GSI Project No. 2311102 Park, Kansas. Prepared for KDHE/BER Topeka, Kansas. Kansas Department of Health and Environment, Division of Environment, Bureau of Environmental Remediation, June 2007, Risk-Based Standards for Kansas RSK Manual – 4th Version. Kansas Department of Health and Environment, Division of Environment, Bureau of Environmental Remediation, August 12, 2009, Park PWS Well #1 Site 2009 Comprehensive Groundwater Sampling Event & LTM Sampling Results Memo. Terracon Inc., January 2009, Phase 1 Environmental Site Assessment Heinrich Feeds – Park 504 South Cedar Park, Gove County, Kansas. Project Number: A6087025. Prepared for The Scoular Company Omaha, Nebraska. 9 10.0 Appendices 10 10.1 Tables Table 1: Park PWS #1 LTM Nitrate Results 1996-2008 Well ID MW-1S MW-1D MW-2D MW-3S Sampling Date 2/27/1996 4/5/1999 7/10/2002 9/27/2006 8/9/2007 3/18/2008 9/17/2008 2/27/1996 4/5/1999 7/10/2002 9/27/2006 8/9/2007 3/18/2008 9/17/2008 2/27/1996 4/5/1999 7/10/2002 9/28/2006 8/9/2007 3/18/2008 9/17/2008 2/27/1996 4/5/1999 7/10/2002 9/28/2006 8/9/2007 3/18/2008 9/17/2008 Nitrate (ppm) NS 18.5 NS NS dry 53 dry NS 1.61 NS NS 1.1 2.6 1.8 NS 1.96 NS NS 1.3 1.9 1.4 NS 22.6 NS NS dry dry dry Sampling Date 2/27/1996 4/5/1999 7/10/2002 MW-3D 9/28/2006 8/9/2007 3/18/2008 9/17/2008 2/27/1996 4/5/1999 7/10/2002 MW-10S 9/28/2006 8/9/2007 3/18/2008 9/17/2008 2/27/1996 4/5/1999 7/10/2002 MW-10D 9/28/2006 8/9/2007 3/18/2008 9/17/2008 Well ID Nitrate (ppm) NS 1.3 NS NS 1.4 2 1.7 NS NS NS NS 16 19 27 NS NS NS NS 1.9 2.8 2.5 Bold -values exceed MCL ppm = parts per million NS = not sampled for nitrate Table 2: Park PWS #1 2009 Comprehensive Sampling Event Nitrate Results Well ID MW-1 MW-1S Sampling Approximate Nitrate Date Sample Depth (ppm) 5/28/2009 127 feet NS 5/28/2009 109 feet 80 MW-1S Duplicate 5/28/2009 109 feet 80 MW-1D MW-2 MW-2D MW-3 MW-3S MW-3D MW-4 MW-5 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 152 feet 127 feet 149 feet 128 feet 107 feet 152 feet 127 feet 120 feet 2.2 NS 1.9 17 NS 1.9 16 13 MW-6 5/28/2009 120 feet 7.3 MW-7 MW-8S MW-8D MW-9S MW-9D 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 120 feet 120 feet 156 feet 117 feet 151 feet 6.2 11 1.3 13 3.1 Well ID MW-10 MW-10S MW-10S Duplicate MW-10D PWS #1 IW-1 IW-2 IW-3 Riedel Riedel Duplicate Kinderknecht Kinderknecht Irrigation Well Sampling Approximate Nitrate Date Sample Depth (ppm) 5/28/2009 117 feet 5.9 5/28/2009 125 feet 34 5/28/2009 125 feet 30 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/28/2009 5/27/2009 5/27/2009 5/27/2009 145 feet 160 feet 141 feet 136 feet 135 feet 150 feet 150 feet 125 feet 2.8 7.4 NS NS 6.5 11 10 5.3 8/6/2009 159 feet 3.6 Bold -values exceed MCL ppm = parts per million NS = not sampled for nitrate Table 3: Park PWS #1 Nitrate Source Investigation Soil Analytical Results Total Ammonia Nitrate Sample Sample Date Nitrate+Ammonia Concentration Concentration ID Depth Collected Concentration (mg/Kg) (mg/Kg) (mg/Kg) SP-2 2 feet 3/15/2010 0.8 4.5 5.3 SP-3 0.5 feet 3/17/2010 1.5 11 12.5 SP-3 2 feet 3/17/2010 1.4 13 14.4 SP-3 4 feet 4/13/2010 0.69 3.9 4.59 SP-4 2 feet 3/17/2010 0.49 5.7 6.19 SP-7 2 feet 3/17/2010 0.45 5.7 6.15 SP-12 2 feet 3/17/2010 0.18 68 68.18 SP-16 2 feet 3/17/2010 0.34 4.2 4.54 SP-18 0.5 feet 3/17/2010 870 24 894 SP-18 2 feet 3/17/2010 210 250 460 SP-19 0.5 feet 3/17/2010 190 18 208 SP-19 2 feet 3/17/2010 74 150 224 SP-20 0.5 feet 3/17/2010 1.8 9.4 11.2 SP-20 2 feet 3/17/2010 0.94 21 21.94 SP-21 0.5 feet 3/17/2010 1 3.5 4.5 SP-23 2 feet 3/17/2010 1.5 47 48.5 SP-23 4 feet 3/17/2010 0.93 57 57.93 SP-24 2 feet 3/17/2010 0.68 22 22.68 SP-25 2 feet 3/17/2010 450 <0.1 450 SP-25 4 feet 3/17/2010 260 190 450 Nitrate and Ammonia concentrations are reported as nitrogen (N). Bold Red values exceed Applicable RSK Values. Ground Cover Applicable RSK Values No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) Vegetation Vegetation Vegetation Vegetation No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) No Vegetation (Gravel/Parking) 40 mg/Kg 85 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 85 mg/Kg 40 mg/Kg 85 mg/Kg 40 mg/Kg 85 mg/Kg 40 mg/Kg 85 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg 40 mg/Kg Table 4: Park PWS #1 Nitrate Source Investigation Groundwater Analytical Results Sample ID Sample Location Approximate Sample Depth GW-2 MW-1S MW-1D MW-2D MW-3S MW-3S MW-3D MW-9S MW-9D MW-9M Geoprobe Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well 107 feet 109 feet 152 feet 149 feet 107 feet 107 feet 152 feet 117 feet 151 feet Ammonia Nitrate Date Concentration Concentration Collected (mg/L) (mg/L) 3/16/2010 NA 12 4/13/2010 <0.1 130 4/13/2010 <0.1 3 4/13/2010 <0.1 2 3/17/2010 NA 19 4/13/2010 <0.1 23 4/13/2010 <0.1 2.1 4/13/2010 <0.1 19 4/13/2010 <0.1 3.2 Monitoring Well 151 feet 4/13/2010 <0.1 3.2 MW-10S Monitoring Well MW-10D Monitoring Well PWS #1 Influent PWS #1 Butch Domestic Well 125 feet 145 feet 160 feet 160 feet 4/13/2010 4/13/2010 4/14/2010 3/17/2010 <0.1 <0.1 <0.1 NA 24 3.2 7.5 2.7 (dup of MW-9D) Nitrate and Ammonia concentrations are reported as nitrogen (N). Bold Red values exceed the MCL of 10mg/L 10.2 Figures 2008 Aeril Photo of Site and Vicinity Topography Map of Site and Vicinity 0 0.25 0.5 0 0.25 0.5 Miles Miles 1986 Aerial Photo of Subject Properties Gove County East Elevator West Elevator KANSAS 0 Area of Investigation 200 2008 Aerial Photo of Subject Properties 400 600 800 Feet East Elevator West Elevator 0 KDHE has made every effort to ensure the accuracy of the data, however, errors in the data are possible. Figure created on July 29, 2010. 200 400 600 800 Feet Figure 1 Site Location Map Nitrate Source Investigation Park, Gove County, Kansas MAPLE COTTONWOOD WALNUT MAIN ELM CEDAR COUNTY ROAD 58 FOURTH FIFTH OLD US-40 Kinderknecht Kinderknecht Irrigation Irrigation Well Well 3.6 PWS PWS #1 #1 7.4 3.1 MW-9D MW-9D MW-9S MW-9S CEDAR COUNTY ROAD 59 11 1.3 NS COUNTY ROAD CC 2.2 FIFTH MW-10S MW-10S MW-10D MW-10D 34 2.8 MW-4 MW-4 16 NS MW-7 MW-7 MW-1D MW-1D MW-2D MW-2D 1.9 K-211 IW-3 IW-3 MW-8D MW-8D MW-2 17 NS MW-2 IW-2 MW-3 MW-3 IW-2 IW-1 NS IW-1 MW-1 OW-1 OW-1 MW-1 11 6.5 MW-8S MW-8S NS Riedel Riedel ELM 13 MW-1S MW-1S MW-5 MW-5 13 6.2 MW-6 MW-6 7.3 MW-3D MW-3D MW-3S MW-3S 1.9 NS 80 MW-10 MW-10 5.9 Kinderknecht Kinderknecht 5.3 Gove County 0 100 200 400 600 Background Map Scale Bar Inset Map Scale Bar 0 50 100 200 300 800 Feet 400 Feet Monitoring Well Domestic Well Injection Well Irrigation Well Public Water Supply Well 1.2 Nitrate Analytical Result Nitrate values provided in parts per million. Bold values exceed the MCL. Figure modified on July 29, 2010 FIGURE 2 2009 Comprehensive Sampling Event Nitrate Analytical Results Park PWS #1 Site Park, Kansas Butch Domestic Well 1 Mile West PWS #1 COUNTY ROAD 58 CEDAR MW-9D MAIN ELM MW-10D MW-10S SP-1 GW-2 SP-2 MW-2D MW-1D MW-1S SP-12 SP-14 SP-10 SP-9 SP-6 SP-5 SP-7 SP-8 SP-4 SP-3 50 100 200 300 400 Feet MW-3D SP-22 SP-23 SP-24 SP-19 SP-20 SP-15 SP-13 SP-16 MW-3S SP-25 SP-21 SP-18 SP-17 SP-11 OLD US-40 GW-1 0 MW-9S Soil Probe Groundwater Probe Public Water Supply Well Monitoring Well KDHE has made every effort to ensure the accuracy of the data, however, errors in the data are possible. Therefore data is provided without representation as to accuracy and without any warranty, either expressed or implied. Figure created on July 29, 2010 FIGURE 3 Soil & Groundwater Sample Locations 2010 Nitrate Source Investigation Park PWS #1 Site Park, Kansas MW-1D MW-1S SP-12 Not Analyzed Not Analyzed SP-10 SP-6 SP-16 Not Analyzed Not Analyzed SP-9 SP-13 Not Analyzed SP-7 Not Analyzed SP-3 0.5 ft - 12.5 mg/Kg 2 ft - 14.4 mg/Kg 4 ft - 4.59 mg/Kg SP-1 Probe Location ID SP-17 Not Analyzed Not Analyzed SP-4 2 ft - 6.19 mg/Kg Soil Probe 2 ft - 4.54 mg/Kg SP-8 2 ft - 6.15 mg/Kg 0 510 20 30 40 Feet Storage Building Office Not Analyzed SP-5 Elevator SP-15 SP-14 2 ft - 68.18 mg/Kg 2 ft - 6.19 mg/Kg 2 ft - 68.18 mg/Kg SP-11 Not Analyzed Nitrate Laboratory Analytical Result Nitrate Laboratory Analytical Result (Exceeds RSK) Monitoring Well MW-1S Monitoring Well ID KDHE has made every effort to ensure the accuracy of the data, however, errors in the data are possible. Therefore data is provided without representation as to accuracy and without any warranty, either expressed or implied. Figure created on July 29, 2010 FIGURE 4A Nitrate Analytical Results in Soil West Elevator Facility Nitrate Source Investigation Park PWS #1 Site SP-1 Storage Building Not Analyzed SP-2 2 ft - 5.3 mg/Kg MW-3D MW-3S Office Elevator SP-23 SP-22 Not Analyzed 2 ft - 48.5 mg/Kg 4 ft - 57.93 mg/Kg SP-24 2 ft - 22.68 mg/Kg SP-25 2 ft - 450 mg/Kg 4 ft - 450 mg/Kg SP-21 0.5 ft - 4.5 mg/Kg SP-18 0.5 ft - 894 mg/Kg 2 ft - 460 mg/Kg 0 510 20 30 40 Feet Soil Probe SP-1 Probe Location ID 2 ft - 6.19 mg/Kg 2 ft - 68.18 mg/Kg SP-19 0.5 ft - 208 mg/Kg 2 ft - 224 mg/Kg SP-20 0.5 ft - 11.2 mg/Kg 2 ft - 21.94 mg/Kg Nitrate Laboratory Analytical Result Nitrate Laboratory Analytical Result (Exceeds RSK) Monitoring Well MW-1S Monitoring Well ID KDHE has made every effort to ensure the accuracy of the data, however, errors in the data are possible. Therefore data is provided without representation as to accuracy and without any warranty, either expressed or implied. Figure created on July 29, 2010 FIGURE 4B Nitrate Analytical Results in Soil East Elevator Facility Nitrate Source Investigation Park PWS #1 Site Butch Domestic Well 1 Mile West 2.7 mg/L PWS #1 7.5 mg/L 3.2 mg/L COUNTY ROAD 58 CEDAR MW-9D ELM MAIN MW-9S 19 mg/L MW-10D 3.2 mg/L MW-10S 24 mg/L GW-2 12 mg/L MW-1D 3.0 mg/L MW-2D 130 mg/L MW-3D 2.0 mg/L 2.1 mg/L MW-1S MW-3S 23 mg/L OLD US-40 GW-1 Dry - Not Sampled 0 50 100 200 Feet Monitoring Well Public Water Supply Well Groundwater Probe GW-1 Sample ID 10 mg/L Nitrate Laboratory Analytical Result 10 mg/L Nitrate Laboratory Analytical Result (Exceeds RSK) KDHE has made every effort to ensure the accuracy of the data, however, errors in the data are possible. Therefore data is provided without representation as to accuracy and without any warranty, either expressed or implied. Figure created on August 18, 2010 FIGURE 5 Nitrate Analytical Results in Groundwater 2010 Nitrate Source Investigation Park PWS #1 Site Park, Kansas 10.3 Interview/Information Request Documentation 10.4 Photographic Documentation PARK PWS WELL #1 C6-032-70142 Photo Date: 3/17/2010 Photographer: J. Vopata Viewing Direction: N Caption: 6600 Geoprobe attempting to pull rods at sample location GW-2. Photo Date: 3/17/2010 Photographer: J. Vopata Viewing Direction: W Caption: Mobilizing 6600 Geoprobe to soil sample location SP-10. PARK PWS WELL #1 C6-032-70142 Photo Date: 3/17/2010 Photographer: J. Vopata Viewing Direction: W Caption: Extracting rods at probe location GW-1. 10.5 Field Notes 10.6 Access Agreements 10.7 Utility Clearance 10.8 Analytical Reports