Site Investigation Report. Don Miller 802 and 854 East Washington Avenue Madison, Wisconsin. Presented to:

Transcription

1 Site Investigation Report Don Miller 802 and 854 East Washington Avenue Madison, Wisconsin Presented to: C i t y o f M a d i s o n City of Madison Engineering Department 210 Martin Luther King Jr. Boulevard Madison, Wisconsin (608) Presented by: S C S B T S Q U A R E D 2830 Dairy Drive Madison, Wisconsin (608) November 2011 File No Offices Nationwide

2 C i t y o f M a d i s o n S i t e I n v e s t i g a t i o n R e p o r t D o n M i l l e r a n d E a s t W a s h i n g t o n A v e n u e M a d i s o n, W i s c o n s i n Presented To: C i t y o f M a d i s o n Engineering Department 210 Martin Luther King Jr. Boulevard Madison, Wisconsin (608) Presented From: S C S B T S Q U A R E D 2830 Dairy Drive Madison, Wisconsin (608) November 2011 File No

3 C i t y o f M a d i s o n T a b l e o f C o n t e n t s Section Page Certifications... ii 1.0 Introduction Background and Site Description Site Geology and Hydrogeology Site Investigation Site Investigation Results Soil Metals Petroleum Contamination Fill Materials Site Investigation Results - Groundwater Recommendations... 3 No. L i s t o f T a b l e s 1 Soil Analytical Results Summary VOCs 2 Soil Analytical Results Summary SVOCs 3 Soil Analytical Results Summary Metals 4 Groundwater Analytical Results Summary VOCs No. L i s t o f F i g u r e s 1 Site Location Map 2 Site Plan 3 Estimated Extent of DRO and VOC Soil Contamination 4 Estimated Extent of SVOC Soil Contamination 5 Estimated Extent of Metals Soil Contamination 6 Estimated Extent of Groundwater VOC Contamination A p p e n d i c e s A B Laboratory Analytical Report Boring Logs I:\ \Reports\111109_Site_Investigation_Report_ doc D o n M i l l e r i S i t e I n v e s t i g a t i o n R e p o r t

4 C i t y o f M a d i s o n CERTIFICATIONS I, Meghan Dickoff hereby certify that I am a hydrogeologist as the term is defined in s. NR (1), Wis. Adm. Code, and that, to the best of my knowledge, all of the information contained in this document is correct and the document was prepared in compliance with all applicable requirements in chs. NR 700 to 726, Wis. Adm. Code. Signature Meghan Dickoff, Hydrogeologist Title November 9, 2011 Date I, Christopher Valcheff, declare that, to the best of my professional knowledge and belief, I meet the definition of Environmental Professional as defined in 40 CFR Part I have the specific qualifications based on education, training, and experience to assess a property of the nature, history, and setting of the subject property. I have developed and performed the all appropriate inquiries in conformance with the standards and practices set forth in 40 CFR Part 312. Signature Christopher H. Valcheff, Senior Project Manager Title November 9, 2011 Date D o n M i l l e r i i S i t e I n v e s t i g a t i o n R e p o r t

5 C i t y o f M a d i s o n 1.0 INTRODUCTION SCS BT Squared (SCS) is pleased to present the results of the Phase 2 Environmental Site Assessment (ESA) performed at the Don Miller site, located at 802 and 854 East Washington Avenue in Madison, WI (subject property). This investigation was performed on September 19-21, B A C K GR OUND AND S I TE D ESCRIPTION The subject property is approximately 4.25 acres in size. The property includes several buildings that are currently vacant and one building currently used as an auto body shop. The vacant buildings were most recently used as automotive sales and repair facilities. The remainder of the property consists of an asphalt-covered parking area. The property has historically been used for several industrial purposes, including a wrecking yard near the southwestern edge of the property and a saddler on the southeastern edge of the property S I T E GEOLOGY A N D HYDROGEOLOGY Site geology generally consists of fill material to a depth of 4 to 6 feet below ground surface (bgs) overlying peat to 6 to 8 feet bgs, with clay below the peat. The fill material is generally silty sand containing varying amounts of coal fragments and cinders, glass, and red brick fragments. During the site investigation, the depth to groundwater across the site varied from 6 to 9 feet bgs. 2.0 SITE INVESTIGATION Twenty-six soil borings were advanced using a Geoprobe drill rig. Boring locations are shown on Figure 2. Each boring was logged using the Unified Soil Classification System (USCS), and continuous samples were screened with a photoionization detector (PID) for volatile organic compounds (VOCs). Groundwater samples were collected from six of the borings. The borings were advanced to depths ranging from 8 to 15 feet bgs. Borings sampled for soil only were advanced to 8 to 10 feet bgs. Borings where groundwater samples were collected were advanced as deep as 15 feet bgs in order to obtain water samples S I T E INVES TIGATION R ESULTS SOIL At least one soil sample from each boring location was submitted to TestAmerica in Watertown, WI, for laboratory analysis. Where only one sample from a boring was submitted, that sample was taken from the upper four feet of the boring in order to assess direct-contact risks. Where elevated PID readings were recorded, the sample was taken from the interval with the highest reading. In cases where two samples were submitted, the second sample was collected from the sampling interval immediately above the vadose zone. All soil samples were analyzed for petroleum volatile organic compounds (PVOCs). Selected samples were also analyzed for additional VOCs, diesel range organics (DRO), semi-volatile organic compounds (SVOCs) and/or selected metals. D o n M i l l e r 1 S i t e I n v e s t i g a t i o n R e p o r t

6 C i t y o f M a d i s o n Summaries of the soil analytical results are shown in Table 1 through Table 3. The applicable regulatory standards, established under Chapters NR 720 and NR 746, Wisconsin Administrative Code, are also included in these tables. Arsenic, lead, cadmium, and several petroleum compounds each exceed regulatory standards in at least one sample location M e t a l s Arsenic concentrations exceeded the NR 720 residual contaminant limits (RCLs) for nonindustrial direct contact at all sample locations. The industrial direct contact RCL was exceeded in all samples except the shallow soil samples at CMU-6 and CMU-24. Lead concentrations exceeded the non-industrial direct contact RCL in samples above 4 feet bgs at CMU-15, CMU-18, CMU-19, and CMU-23. This RCL was also exceeded in samples from below 4 feet bgs at CMU-6, CMU-18, and CMU-23. The non-industrial direct contact RCL for cadmium was exceeded in the sample taken from 5 to 6 feet bgs at CMU-23. The areas where metals concentrations in soil samples exceeded non-industrial direct contact RCLs are shown on Figure P e t r o l e u m C o n t a m i n a t i o n DRO and several VOCs were detected in soil samples throughout the site. Concentrations of DRO exceeded the RCL at CMU-5, CMU-5A, CMU-9, CMU-12, CMU-15, CMU-18, CMU-19, CMU-22, and CMU-23. In addition, benzene concentrations in soil samples from CMU-14, CMU-15, and CMU-18 exceeded the RCL for benzene. Several other VOCs were detected at concentrations below regulatory standards. The areas where RCLs for DRO or VOCs were exceeded in soil samples are shown on Figure F i l l M a t e r i a l s Several soil samples contained SVOCs, which could be related to petroleum use at the site or associated with the contaminants in the fill materials such as coal fragments and cinders. Soil samples from CMU-9, CMU-15, CMU-18, CMU-19, CMU-23, and CMU-24 were analyzed for SVOCs. Groundwater pathway generic RCLs for acenaphthylene, benzo(a)anthracene, chrysene, naphthalene, and phenanthrene were each exceeded in several of these samples. In addition, non-industrial or industrial direct contact RCLs for several SVOCs were exceeded in shallow soil samples from CMU-15, CMU-18, CMU-19, and CMU-23. Direct contact RCLs were also exceeded in deeper samples from CMU-18 and CMU-23. The areas where concentrations of SVOCs exceeded either groundwater pathway or non-industrial direct contact RCLs are shown on Figure S I T E INVES TIGATION R ESULTS - GROUNDWATER Groundwater analytical results and the applicable regulatory standards, established in Chapter NR 140, Wisconsin Administrative Code, are summarized in Table 4. Groundwater samples collected from borings CMU-5A and CMU-18 both contained concentrations of benzene, ethylbenzene, xylenes, trimethylbenzenes, and naphthalene that exceed NR 140 enforcement standards (ESs). In addition, the ES for toluene was exceeded in the sample from CMU-18. Both of these borings were located in areas where previous investigations had identified D o n M i l l e r 2 S i t e I n v e s t i g a t i o n R e p o r t

7 C i t y o f M a d i s o n petroleum contamination in soil and groundwater. No ES or preventative action limit (PAL) exceedances were identified in areas where groundwater contamination had not previously been identified. The estimated extent of ES exceedances in groundwater is shown on Figure RECOMMENDATIONS The site soil and fill material contain widespread PVOCS, SVOCS, and metals associated with former fuel storage at the site and contaminants in the historic fill materials like coal fragments and cinders. The PVOC contamination is generally located near former underground storage tanks. The fill material and associated sources of contamination are observed in all borings at depths from near the ground surface to approximately 6 feet bgs. The required response to the contaminated soil and fill materials at the site depends in part on the redevelopment plan for the site. However, the City may find it beneficial to demolish the buildings to excavate petroleum contaminated materials that were not accessible while the site was operated as an automobile sales and service center. Excavating and disposing petroleum contaminated material in advance of a firm redevelopment plan will increase the property value and remove the most mobile source of contamination at the site. The primary exposure pathway of concern for the contaminated soils at the site is the direct contact pathway, which includes ingestion and/or inhalation of contaminated soil particles. To prevent exposure by this pathway, soil contaminated at concentrations exceeding the direct contact cleanup standards must be either covered to prevent contact or removed from the site. For a cover, the Wisconsin Department of Natural Resources (WDNR) will typically accept either a hard covering such as asphalt or concrete or a soil cover that is at least 2 feet thick. If contaminated soil is excavated, then it must be managed properly. The primary options include disposal at a landfill or management on site (e.g., moving soil excavated from one area of the site to another area and covering it). With WDNR approval, the contaminated material may be used as fill material at another site with similar contamination. In general, SCS recommends development of a Material Management Plan in concert with the site redevelopment plans. The Material Management Plan will outline the areas where contaminated soil will be excavated and the plan for managing that soil. If needed, the plan can also address groundwater dewatering management during construction and vapor management below proposed buildings and structures. The plan can be reviewed and approved by the WDNR and used to communicate the soil management approach to contractors and other involved parties. Since the site has historic fill materials, future developments may also need an exemption from the WDNR to build on historic fill sites. Because some new areas of contamination were discovered during the Phase 2 ESA, the WDNR should be notified of the contamination by the property owner and will likely assign a new case tracking number to the site. Approval and implementation of the Material Management Plan should lead to WDNR case closure for these new areas of contamination. D o n M i l l e r 3 S i t e I n v e s t i g a t i o n R e p o r t

8 T A B L E S 1 Soil Analytical Results Summary VOCs 2 Soil Analytical Results Summary SVOCs 3 Soil Analytical Results Summary Metals 4 Groundwater Analytical Results Summary VOCs

9 Table 1. Soil Analytical Results Summary - VOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # (Results are in µg/kg, except where noted otherwise) Depth PID Lab Sample Date (feet) (ppm) Notes DRO (mg/kg) GRO (mg/kg) Benzene Ethylbenzene CMU-1 9/19/ NA NA <29 <29 <29 <86 <29 <29 <29 29 J NA Toluene Xylenes 1,2,4- TMB 1,3,5- TMB MTBE Naphthalene Other VOCs CMU-2 9/19/ NA NA <28 <28 <28 <84 <28 <28 <28 <28 NA CMU-3 9/19/ NA NA <29 <29 <29 <87 <29 <29 <29 33 J NA CMU-4 9/19/ NA NA <29 <29 <29 <86 <29 <29 <29 87 J NA CMU-5 9/19/ NA <26 <26 <29 <79 <26 <26 <26 76 J NA CMU-5A 9/19/ (1) 250 NA <29 <29 <29 <88 <29 <29 <29 58 J NA 9/19/ NA <31 <31 <31 <94 32 J <31 < NA CMU-6 9/19/ NA NA <27 <27 <27 <82 <27 <27 <27 <54 ND 9/19/ NA NA <29 <29 <29 <86 <29 <29 <29 <57 ND CMU-7 9/19/ NA NA <30 <30 <30 <90 55 J <30 < NA CMU-8 9/19/ NA NA <31 <31 <31 <94 <31 <31 <31 34 J NA CMU-9 9/20/ ,700 NA <29 <29 80 J 230 J 1, <29 NA NA 9/20/ NA <29 <29 <29 <88 <29 <29 <29 NA NA CMU-10 9/20/ NA <29 <29 <29 <88 <29 <29 <29 29 J NA CMU-11 9/20/ NA <31 <31 <31 <94 <31 <31 <31 40 J NA CMU-12 9/20/ (1) 7,700 NA <36 83 J 110 J 220 J 120 J 47 J < NA 9/20/ (1) 320 NA <34 <34 <34 <100 <34 <34 <34 41 J NA CMU-13 9/20/ NA <29 <29 29 J 100 J 45 J <29 < NA 9/20/ NA <28 <28 <28 <84 <28 <28 <28 41 J NA CMU-14 9/20/ NA 630 <28 34 J 160 J J <28 63 J NA CMU-15 9/20/ NA 65 J J 240 J 520 <31 <31 NA NA CMU-16 9/20/ J NA <28 <28 <28 <84 <28 <28 <28 43 J NA CMU-17 9/20/ J NA <29 <29 <29 <88 <29 <29 <29 <29 NA CMU-18 9/20/ NA J 1, <31 <62 Isopropylbenzene 38 J 9/20/ (1) 2,800 NA 3, ,100 3, NA NA n-propylbenzene 79 J Table 1, Page 1 of 3

10 Table 1. Soil Analytical Results Summary - VOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # (Results are in µg/kg, except where noted otherwise) Depth PID Lab DRO GRO Sample Date (feet) (ppm) Notes (mg/kg) (mg/kg) Benzene Ethylbenzene Toluene Xylenes 1,2,4- TMB 1,3,5- TMB MTBE Naphthalene CMU-19 9/20/ (1) 1,700 NA <30 <30 41 J <90 54 J <30 32 J NA NA Other VOCs 9/20/ J NA <33 <33 <33 <98 <33 <33 <33 NA NA CMU-20 9/20/ NA <30 <30 <30 <89 <30 <30 <30 77 J NA CMU-21 9/20/ NA <31 <31 <31 <94 <31 <31 <31 33 J NA CMU-22 9/20/ (1) 540 NA <28 34 J 41 J 110 J 66 J 31 J <28 1,300 NA 9/20/ (1) 170 NA <29 <29 44 J 130 J 62 J <29 < NA CMU-23 9/20/ (1) 430 NA <31 <31 <31 <94 <31 <31 <31 NA NA 9/20/ (1) 760 NA <29 <29 <29 <87 <29 <29 <29 NA NA CMU-24 9/21/ (1) 3.1 J NA <27 <27 <27 <82 <27 <27 <27 NA NA 9/21/ J NA <49 <49 <49 <150 <49 <49 <49 NA NA CMU-25 9/21/ J NA <39 <39 <39 <120 <39 <39 <39 <39 NA 9/21/ J NA <32 <32 <32 <97 <32 <32 <32 <32 NA MeOH Blank 9/19/ NA NA <25 <25 <25 <75 <25 <25 <25 <25 NA 9/20/ NA NA <25 <25 <25 <75 <25 <25 <25 <50 ND NR 720 Residual Contaminant Level (RCL) NR 746 Table NE 100 NE 5.5 8,500 2,900 4,600 1,500 38,000 4,100 42,000 NE 83,000 NE 11,000 NE NE 50 2,700 1,2-Dichloroethane 600 NR 746 Table 2 NE NE 1,100 NE NE NE NE NE NE NE 1,2-Dichloroethane 540 Abbreviations: µg/kg = micrograms per kilogram or parts per billion (ppb) mg/kg - milligrams per kilogram or parts per million (ppm) ppm = PID measured in ppm as isobutylene PID = Photo-Ionization Detector DRO = Diesel Range Organics GRO = Gasoline Range Organics TMB = Trimethylbenzene MTBE = Methyl-tert-butyl ether VOCs = Volatile Organic Compounds NA = Not Analyzed NE = Not Established ND = Not Detected -- = Not Applicable Notes: Bold+underlined values exceed NR 720 RCLs. NR 720 RCL - Wisconsin Administrative Code (WAC), Chapter NR 720 Residual Contaminant Level. NR 746 Table 1 - WAC, Chapter NR (2)(b) Table 1 - Indicators of Residual Petroleum Product in Soil Pores. NR 746 Table 2 - WAC, Chapter NR (2)(b) Table 2 - Protection of Human Health from Direct Contact with Contaminated Soil. Table 1, Page 2 of 3

11 Laboratory Notes/Qualifiers: J = Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. (1) Surrogate - Surrogate or matrix spike recoveries were not obtained because the extract was diluted for analysis; also compounds analyzes at a dilution may be flagged with a D. Created by: LMH Date: Last revision by: LMH Date: Checked by: LSB Date: 10/7/ /7/ /11/2011 Table 1. Soil Analytical Results Summary - VOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # I:\ \Tables-General\[Soil_VOCs.xls]Lab Notes Table 1, Page 3 of 3

12 Table 2. Soil Analytical Results Summary - SVOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # (Results are in µg/kg, except where noted otherwise) Sample Date Depth (feet) Lab Notes CMU-9 9/20/ (1) <450 <350 <350 <310 <250 <360 < J 1,500 <420 <620 <290 <510 <750 <1, J < J 9/20/ <12 <8.9 <9.1 <8.1 <6.5 <9.3 <7.1 <13 <8.8 <11 <16 <7.6 <13 <19 <50 <7.5 <16 <14 CMU-15 9/20/ (1) 1,100 J 2,400 10,000 10,000 14,000 4,000 15,000 15,000 12,000 2,500 41,000 2,200 11,000 <1,000 <2, J 37,000 52,000 CMU-18 9/20/ (1) 4,600 3,200 J 19,000 72, ,000 51,000 85,000 51,000 93,000 14, ,000 5,300 45,000 NA <5,300 <790 47, ,000 9/20/ (1) 6,600 <980 26,000 89, ,000 37,000 83,000 58,000 80,000 17, ,000 7,700 49,000 <2,100 <5,500 <820 72, ,000 CMU-19 9/20/ (1) <2,300 1,800 J 4,600 J 16,000 25,000 8,600 20,000 25,000 20,000 5,600 J 32,000 1,600 J 15,000 <3,800 <9,900 2,100 J 22,000 30,000 9/20/ <12 <9.5 <9.7 <8.6 <6.9 <9.8 <7.5 <14 <9.3 <12 <17 <8.1 <14 <20 <53 <7.9 <17 <15 CMU-23 9/20/ J 2,300 2,000 10,000 15,000 7,600 13,000 13,000 11,000 3,900 12, ,200 <200 < J 4,100 13,000 9/20/ < ,700 5,300 2,600 4,100 3,500 3,600 1,000 4, J 2,700 <180 < J 1,100 3,400 CMU-24 9/21/ <53 <41 <42 92 J 130 J 59 J 120 J 160 J 91 J < J < J <88 <230 <34 < J 9/21/ <95 <73 <75 <67 62 J <76 < J <72 <89 <130 <62 <110 <160 <410 <61 <130 <120 WDNR PAH Soil Generic Residual Contaminant Levels (RCLs) (Interim Guidance - April 1997) Groundwater Pathway Non-Industrial Direct Contact Industrial Direct Contact 38, ,000 60,000,000 1-Methylnaphthalene Acenaphthene Acenaphthylene , ,000 Anthracene 3,000,000 5,000, ,000,000 Benzo(a) anthracene 17, ,900 Benzo(b) fluoranthene 360, ,900 Benzo(k) fluoranthene 870, ,000 Benzo(a) pyrene 48, Benzo(ghi) perylene 6,800,000 1,800 39,000 Chrysene 37,000 8, ,000 Dibenzo(a,h) anthracene 38, Fluoranthene 500, ,000 40,000,000 Fluorene 100, ,000 40,000,000 Indeno(1,2,3- cd) pyrene 680, ,900 23,000 1,100,000 70,000,000 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene 20, ,000 40,000, , ,000 1,800 18, ,000 8,700, ,000 30,000,000 Abbreviations: µg/kg = micrograms per kilogram or parts per billion (ppb) SVOCs = Semivolatile Organic Compounds -- = Not Applicable WDNR = Wisconsin Department of Natural Resources Laboratory Notes/Qualifiers: J = Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. (1) Surrogate - Surrogate or matrix spike recoveries were not obtained because the extract was diluted for analysis; also compounds analyzes at a dilution may be flagged with a D. Created by: LMH Date: 10/7/2011 Last revision by: TLC Date: 10/13/2011 Checked by: LSB Date: 10/13/2011 I:\ \Tables-General\[Soil_SVOCs.xls]Soil SVOCs Table 2, Page 1 of 1

13 Table 3. Soil Analytical Results Summary - Metals Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # (Results are in mg/kg) Sample Date Depth (feet) Lab Notes Arsenic Barium Cadmium Chromium Chromium, hexavalent CMU-6 9/19/ NA 0.35 NA 0.39 J 12 NA NA NA 9/19/ NA 0.35 NA < NA NA NA CMU-9 9/20/ NA NA 20 NA NA NA 9/20/ NA NA 8.2 NA NA NA CMU-15 9/20/ NA NA 69 NA NA NA CMU-18 9/20/ NA J J 9/20/ NA NA 290 NA NA NA CMU-19 9/20/ NA NA 590 NA NA NA 9/20/ NA NA 17 NA NA NA CMU-23 9/20/ NA NA 170 NA NA NA 9/20/ NA NA 89 NA NA NA CMU-24 9/21/ NA NA 13 NA NA NA 9/21/ NA NA 14 NA NA NA Lead Mercury Selenium Silver NR 720 RCLs Non-Industrial (Direct Contact) NE 8 (a) (a) 50 NE NE NE NR 720 RCLs Industrial (Direct Contact) 1.6 NE 510 (a) (a) 500 NE NE NE Abbreviations: mg/kg - milligrams per kilogram or parts per million (ppm) -- = Not Applicable NA = Not Analyzed NE = No Standard Established Table 3, Page 1 of 2

14 Table 3. Soil Analytical Results Summary - Metals Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # Notes: (a) Chromium, hexavalent non-industrial = 14 mg/kg; industrial = 200 mg/kg. Chromium, trivalent non-industrial = 16,000 mg/kg; industrial = not applicable. NR 720 RCLs Non-Industrial = NR 720 Table 2 Residual Contaminant Levels (RCLs) Based On Human Health Risk From Direct Contact Related To Land Use for Non-Industrial. NR 720 RCLs Industrial = NR 720 RCLs Table 2 Based On Human Health Risk From Direct Contact Related To Land Use for Industrial. Bold+underlined values exceed NR 720 RCLs. Laboratory Notes/Qualifiers: J = Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Created by: LMH Date: 10/7/2011 Last revision by: LMH Date: 10/7/2011 Checked by: LSB Date: 10/11/2011 I:\ \Tables-General\[Soil_Metals.xls]Soil Metals Table 3, Page 2 of 2

15 Table 4. Groundwater Analytical Results Summary - VOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # (Results are in µg/l) Sample Date Lab Notes CMU-5A 9/19/ J 2, ,700 2,060 <10 NA n-butylbenzene 50 sec-butylbenzene 15 J Isopropylbenzene 80 p-isopropyltoluene 9.8 J Naphthalene 750 n-propylbenzene 300 CMU-6 9/19/ < J < J 0.66 J <0.50 NA Naphthalene 0.39 J CMU-8 9/19/ <0.20 <0.50 <0.50 < J <0.50 NA ND CMU-13 9/20/ <0.20 < J <0.50 <0.40 <0.50 NA ND CMU-18 9/20/ ,000 3,900 22,000 14,000 2,610 <25 NA n-butylbenzene 53 J sec-butylbenzene 15 J Isopropylbenzene 120 Naphthalene 480 n-propylbenzene 360 CMU-23 9/20/ <0.20 <0.50 <0.50 <0.50 <0.40 <0.50 NA ND Trip Blank 9/19/ <0.20 <0.50 <0.50 <0.50 <0.40 <0.50 NA ND NR 140 Enforcement Standards (ESs) 9/20/ <0.20 <0.50 <0.50 <0.50 <0.40 <0.50 NA ND NR 140 Preventive Action Limits (PALs) Benzene Ethylbenzene Toluene Xylenes 2, TMBs MTBE Lead Other VOCs Naphthalene 100 Naphthalene 10 Abbreviations: µg/l = micrograms per liter or parts per billion (ppb) MTBE = Methyl-tert-butyl ether TMBs = 1,2,4- and 1,3,5-trimethylbenzenes VOCs = Volatile Organic Compounds NA = Not Analyzed NE = No Standard Established ND = Not Detected -- = Not Applicable Table 4, Page 1 of 2

16 Table 4. Groundwater Analytical Results Summary - VOCs Don Miller Properties and 854 East Washington Avenue Properties / SCS BT Squared Project # Notes: NR 140 ESs - Wisconsin Administrative Code (WAC), Chapter NR Table 1 - Public Health Groundwater Quality Standards. NR 140 PALs - WAC, Chapter NR Table 1 - Public Health Groundwater Quality Standards. Bold+underlined values meet or exceed NR 140 enforcement standards. Italic+underlined values meet or exceed NR 140 preventive action limits. Laboratory Notes/Qualifiers: J = Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Created by: LMH Date: 10/7/2011 Last revision by: LMH Date: 10/7/2011 Checked by: LSB Date: 10/11/2011 I:\ \Tables-General\[GW_VOCs.xls]GW VOCs Table 4, Page 2 of 2

17 F I G U R E S 1 Site Location Map 2 Site Plan 3 Estimated Extent of DRO and VOC Soil Contamination 4 Estimated Extent of SVOC Soil Contamination 5 Estimated Extent of Metals Soil Contamination 6 Estimated Extent of Groundwater VOC Contamination

18 I:\ \Drawings-General\Site Location.dwg, 11/9/2011 1:29:46 PM

19 I:\ \Drawings-General\site.dwg, 11/9/2011 1:34:52 PM

20 I:\ \Drawings-General\S-rslt.dwg, 11/9/2011 1:34:07 PM

21 I:\ \Drawings-General\S-rslt.dwg, 11/9/2011 1:33:31 PM µg/kg.

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23 I:\ \Drawings-General\W-rslt.dwg, 11/9/2011 1:35:25 PM

24 A P P E N D I X A L a b o r a t o r y A nalytical Report

25 ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Watertown 1101 Industrial Drive, Suites 9 & 10 Watertown, WI Tel: TestAmerica Job ID: WUI0699 Client Project/Site: Cooler #1 Client Project Description: Don Miller For: BT SQUARED, INC Dairy Drive Madison, WI Attn: Mr. Chris Valcheff Authorized for release by: 10/04/ :07:21 PM Sandie Fredrick Project Manager Sandie.Fredrick@testamericainc.com Designee for Dan F. Milewsky Project Manager Dan.Milewsky@testamericainc.com This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Page 1 of 57 10/04/2011

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29 ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Watertown 1101 Industrial Drive, Suites 9 & 10 Watertown, WI Tel: TestAmerica Job ID: WUI0716 Client Project/Site: Cooler #2 Client Project Description: Don Miller For: BT SQUARED, INC Dairy Drive Madison, WI Attn: Mr. Chris Valcheff Authorized for release by: 10/06/ :17:06 AM Sandie Fredrick Project Manager Sandie.Fredrick@testamericainc.com Designee for Dan F. Milewsky Project Manager Dan.Milewsky@testamericainc.com This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Page 1 of 36 10/06/2011

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34 ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Watertown 1101 Industrial Drive, Suites 9 & 10 Watertown, WI Tel: TestAmerica Job ID: WUI0723 Client Project/Site: Cooler #3 Client Project Description: Don Miller For: BT SQUARED, INC Dairy Drive Madison, WI Attn: Mr. Chris Valcheff Authorized for release by: 10/06/ :31:35 AM Sandie Fredrick Project Manager Sandie.Fredrick@testamericainc.com Designee for Dan F. Milewsky Project Manager Dan.Milewsky@testamericainc.com This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Page 1 of 25 10/06/2011

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38 A P P E N D I X B Boring Logs

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