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Home My WebLink About20043_War Memorial Stadium_Brownfields Assessment Report_20181029L3 PREPARED FOR: North Carolina AT&T State University Office of the University Engineer 1601 East Market Street Greensboro, NC 27411 PREPARED BY: S&ME, Inc. 8646 West Market Street, Suite 10S Greensboro, NC 27409 June 28, 2018 (Revised October 29, 2018) =0 October 29, 2018 North Carolina AT&T State University Office of the University Engineer 1601 East Market Street Greensboro, North Carolina 27411 Attention: Mr. Chuck Dixon Reference: Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-032 Dear Mr. Dixon: S&ME, Inc. (S&ME) submits this Brownfields Assessment Report summarizing the activities performed for the above referenced project. The assessment was conducted in accordance with S&ME's Brownfields Assessment Work Plan — War Memorial Stadium, dated February 26, 2018. Site maintenance activities discussed herein were performed in accordance with the Site's Environmental Management Plan — Addendum #1 dated February 27, 2018. This report describes the scope of services for the project, laboratory results, findings and conclusions completed for this phase of the project. These services were performed in accordance with S&ME Proposal 43- 1800244, dated March 23, 2018. This revisions to the original report included adding reference IHSB PRSGs to Table 3 and correcting the units of measure for PCB Aroclors on Table 4 Sincerely, S&ME, Inc. B. Summers Long Staff Scientist ZEAL _1 1J of r_ 1 v ��d� IB1o^•� Edmund Q.B. Henriques, P.G. Project Manager/Geologist cc. NCDEQ-DWM Brownfields Program, 1926 Mail Service Center, Raleigh, NC 28288, Attn. Hayley Irick S&ME, Inc. 18646 West Market Street, Suite 105 1 Greensboro, NC 27409 1 p 336.288.7180 1 www.smeinc.com Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-0324358-17-032 Table of Contents 1.0 BACKGROUND................................................................................................................1 2.0 Site Maintenance Monitoring Activities......................................................................2 2.1 New Scoreboard Installation........................................................................................................2 2.2 Trenching and Railing Installation Oversight............................................................................ 2 3.0 Assessment Sampling Activities....................................................................................3 3.1 Health and Safety Plan..................................................................................................................3 3.2 Monitor Well Sampling.................................................................................................................3 3.3 Surface Water Sampling................................................................................................................ 4 3.4 Stream Sediment Sampling........................................................................................................... 4 3.5 Soil Sampling at Pad -Mounted Transformer..............................................................................5 3.6 Investigation Derived Waste (IDW) Sampling ...........................................................................5 3.7 Drummed and Roll -off Soil Sampling.........................................................................................5 4.0 LABORATORY RESULTS..............................................................................................6 4.1 Groundwater Analytical................................................................................................................6 4.2 Surface Water Analytical...............................................................................................................6 4.3 Stream Sediment Analytical..........................................................................................................7 4.4 Pad -Mounted Transformer Soil Analytical.................................................................................7 4.5 Investigation Derived Waste Analytical.....................................................................................7 4.6 Drummed and Roll -off Soil Analytical........................................................................................8 4.7 Quality Assurance /Quality Control Samples............................................................................ 8 5.0 CONCLUSIONS...............................................................................................................9 6.0 USE OF REPORT............................................................................................................10 7.0 LIMITATIONS................................................................................................................10 June 28, 2018 (Revised October 29, 2018) Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina I I s S&ME Project No. 4358-17-0324358-17-032 - List of Figures Figure 1: Site Vicinity Map Figure 2: Topographic Map Figure 3: Site Map Figure 4: Groundwater Contour Map List of Tables Table 1: Monitoring Well Construction Details Table 2: Summary of Groundwater Analytical Results Table 3: Summary of Surface Water and Stream Sediment Analytical Results Table 4: Summary of Transformer Area Soil Sample Analyses Table 5: Investigation Derived Waste — Purge Water Table 6: Summary of Analyses - Drums With Soil From Excavations Table 7: Summary of Waste Characterization Analyses — Soil Generated During Scoreboard Foundation Drilling Appendices Appendix I — Sampling Forms & Field Reports Appendix II — Laboratory Report and Chain Of Custody June 28, 2018 (Revised October 29, 2018) Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-0324358-17-032 - 1.0 BACKGROUND The subject property is the War Memorial Stadium located at 420 Yanceyville Street in Greensboro, North Carolina Figure 1 illustrates the site location. Figure 2 is a portion of USGS topographic map depicting the topography of the site and surrounding area. The property is a 14.08 acre parcel developed with the stadium, tennis courts, and basketball courts and is currently owned by the City of Greensboro. The property has been used as a venue for City of Greensboro sporting activities since opening in 1926. The facility is the oldest minor league baseball venue in the nation and it is currently on the National Register of Historic Places. Since opening it has served as the home of several minor league and local college teams. It served as the home for North Carolina A&T State University (NC A&T) football until 1981 when a new football stadium was opened. It continues to be the home of NC A&T baseball to this day. It has not been used by minor league baseball team since the opening of Newbridge Park in 2004. Soil and groundwater impacts were first identified in April 2000 during field activities related to the installation of a new light pole near the main entrance to the stadium. Following the initial discovery of suspect petroleum - impacted soil, multiple site investigations were completed from 2000 until the present, assessing soil and groundwater. Soil investigations were focused on the initial discovery area, and eleven groundwater monitoring wells were installed to assess the extent of impacts to the shallow groundwater aquifer. Based upon the Comprehensive Site Assessment dated July 23, 2001 and the Phase 11 Environmental Site Assessment dated May 21, 2007, both prepared by ECS Carolina's, sixteen compounds were detected in site groundwater with concentrations that exceeded the 15A NCAC 02L groundwater quality standards (2L Standards). The detected compounds were consistent with groundwater impacts typically related with manufactured gas plant (MGP) wastes. It is known that an MGP plant was located at East Friendly Avenue and North Church Street in Greensboro, approximately 0.5 mile to the southwest of the stadium. Ultimately, it is suspected that petroleum - impacted soils from the former MGP located 0.5 mile from the stadium and/or other local MGP sites was used as fill material during initial construction of the stadium, which occurred in 1926. The City of Greensboro completed a groundwater monitoring event during March 2016. The City reported that the site's one -inch diameter monitoring wells yielded significant amounts of suspended sediment which could not be reduced with low -flow sampling methods. The City prepared report questioned whether the presence of elevated sediment in samples caused the presence of elevated dissolved metals concentrations in the collected groundwater samples. Laboratory analytical results for volatile organic compounds (VOCs) and semi -volatile organic compounds (SVOCs) reported similar constituents to those detected in 2001; and a trend of declining analyte concentrations over time was suggested. NC A&T has interest in acquiring the stadium from the City of Greensboro and submitted a Brownfields Application to the North Carolina Department of Environmental Quality, Division of Waste Management, Brownfields Program (NCDEQ-DWM-BP) date June 6, 2016. NCDEQ-DWM-BP has assigned the subject site Brownfields Project No. 20043-16-041. NC A&T prepared an Environmental Management Plan (EMP) dated December 1, 2016, for the site. The EMP was prepared due to planned renovation activities at the facility to make it more usable and appealing for those who June 22, 2018 (Revised October 29, 2018) Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-0324358-17-032 - perform at and work at the facility. The redevelopment plans outlined in the original EMP were mostly conceptual. To address activities not conceived of during the preparation of the original EMP, Environmental Management Plan —Addendum #1 dated February 27, 2018 was prepared and submitted to NCDEQ-DWM-BP for review and approval. Ms. Hayley Irick with NCDEQ-DWM-BP and Mr. Chuck Dixon with NC A&T conducted a reconnaissance of the site on November 16, 2017. Subsequently, the NCDEQ-DWM-BP reviewed the information contained in the Brownfields Property Application. In a letter dated February 19, 2018, the NCDEQ-DWM-BP outlined a request for additional assessment to address data gaps identified. The additional assessment was required to determine if the site is or can be made safe for the intended reuse, which is to house the NC A&T baseball team and to enhance recreational opportunities for students, faculty, staff and the general public. S&ME's Brownfields Assessment Work Plan — War Memorial Stadium, dated February 26, 2018, was prepared in response to the NCDEQ-DWM-BP request, and provided the framework for the assessment activities discussed herein. In addition to the site assessment activities, certain site maintenance activities were performed during 2018, in accordance with the Environmental Management Plan —Addendum #1 dated February 27, 2018. This report summarizes maintenance activities completed in association with the new scoreboard and dugout railing installations, and the NCDEQ-DWM-BP additional assessment activities. Revisions to the original report included adding reference IHSB PRSGs to Table 3 and correcting the units of measure for PCB Aroclors on Table 4. 2.0 Site Maintenance Monitoring Activities 2.1 New Scoreboard Installation S&ME had a Qualified Environmental Professional (QEP) on site to observe the new scoreboard foundation installation activities, specifically to support proper management of potentially impacted soil and/or groundwater. On April 5, 2018, Lyndal Butler of S&ME was on -site to observe soil excavation activities and monitor ambient air with a photo -ionization detector (PID). S&ME monitored the solid stem auger drilling methods and the placement of the soil removed into a roll -off container staged at the site. Minimal groundwater was encountered during the installation of the foundations; therefore, it was not necessary to remove water from the boreholes. The scoreboard foundation construction involved placement of cement and steel I -beams into the bored holes. No borrow soil was imported to the site for the scoreboard installation. 2.2 Trenching Utility and Railing Installation Oversight On April 10, 2018, S&ME was on site to observe the excavated soils associated with the trenching activities for the installation of the underground electric lines for the new scoreboard and to observe the soil cuttings generated during drilling holes for new dugout railing posts. Prior to the start of work, Mr. Ed Henriques with S&ME reviewed the contaminants known to be present on -site, contaminant exposure pathways, and worker protection options with the staff from Brewer and Mason, the contractor. June 22, 2018 (Revised October 29, 2018) Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-0324358-17-032 A gas powered solid stem auger was used to drill the holes for the new railing posts. Several of the holes drilled for the new dugout railings were observed to contain zones with dark colored soils and some contained what appeared to be gravel sized slag or coal fired boiler residual materials. Grab samples of the removed soils were field -screened with a photo ionization detector (PID). The PID did not detect volatile organic vapors over 0.0 parts per million (PPM). Auger soil cutting were loaded directly into the bed of an All -Terrain Vehicle (ATV), transported to and transferred into (2) 55-gallon drums provided by S&ME. Some black coal/slag material was observed in the excavated soils from the electrical trench, only in the segment completed near the rear gate to the ball field. The suspect slag material was placed into a 55-gallon drum and also field screened with the PID. The PID did not detect any volatile organic vapors over 0.0 ppm in the slag material or soil excavated from the trench. Subsequently, the 55-gallon drums were properly sealed, labeled, and placed in a holding area to be sampled for waste characterization purposes. 3.0 Assessment Sampling Activities 3.1 Health and Safety Plan Prior to the initiation of site activities S&ME prepared a site -specific Health and Safety Plan (HASP) in general accordance with 29 CFR 1910.120, which addressed the contaminants known or suspected to be present on -site, personal protective equipment, and monitoring performed during the field activities, and response actions to be taken in the event monitoring thresholds are exceeded. 3.2 Monitor Well Sampling To assess current shallow groundwater quality and examine trends of detected constituent concentrations over time, existing monitoring wells at the site were sampled. On May 2 and 3, 2018, S&ME collected groundwater samples at monitoring wells MW-1, MW-1 D, MW-2, MW-3, MW-4, MW-5, MW-6, MW-7, and MW-8. Monitoring wells MW-1 and MW-1 D are 2-inch diameter wells. The remaining wells are 1-inch diameter wells. Monitoring wells MW-9 and MW-10 were not located by the City of Greensboro in 2016 and were not sampled during this monitoring event. Monitoring well construction details are summarized in Table 1. Figure 3 depicts the monitoring well locations. Prior to purging the wells, total well depths and depth to water levels were gauged with an electric water level probe. The water level probe was decontaminated before and after each use with an Alconox(D/water mixture, followed by rinsing with distilled water. The collected depth to groundwater data is included in Table 1. Figure 4 provides a groundwater contour map prepared for the May 2018 monitoring event. The monitoring wells were purged and sampled using low -flow sampling methods. Each well was purged for sampling using a peristaltic pump. The purge water was monitored for temperature, pH, and specific conductivity using an Oakton PCSTestr 35 multiparameter meter' and turbidity using an HF Scientific Micro TPI Field ' The YSI Pro meter would not adequately calibrate the day of sampling, the Oakton meter was used in its' place. June 22, 2018 (Revised October 29, 2018) Brownfields Assessment Report, Revision 1 War Memorial Stadium Greensboro, North Carolina S&ME Project No. 4358-17-0324358-17-032 Turbidimeter. Once the wells were sufficiently purged, a groundwater sample was collected from the discharge line of the peristaltic and immediately placed in laboratory prepared containers and placed in a cooler with ice. Field parameters were deemed stabilized after three successive reading indicated that changes in field readings were less than 10% and turbidity was at or less than a goal of 10 NTU. When turbidity values exceeded the 10 NTU goal and other field parameters were stable, profession judgement was used to determine when sampling could occur. The highest final turbidity measurement recorded during this monitoring event was at monitoring well MW-6, where turbidity increased as purging continued and despite a low 100 mg/L purge rate. The stabilized field parameters were recorded and are included with the groundwater field sampling summary sheets in Appendix I. The collected samples were immediately placed in laboratory prepared containers and placed in a cooler with ice. The collected samples were submitted to Pace Analytical Laboratory (PACE) for laboratory analyses for volatile organic compounds (VOCs) by Method 8260, semi -volatile organic compounds (SVOCs) by Method 8270, and the 13 Priority Pollutant Metals by EPA Method 6010 and EPA Method 7471 (as total metals). One trip blank and one duplicate sample was collected for quality assurance. 3.3 Surface Water Sampling A segment of Muddy Creek in the immediate vicinity of the site was sampled to examine the potential for off -site contamination sources as well as potential impacts to surface water quality due to the discharge of shallow groundwater. On May 3, 2018, surface water samples were collected at point located along Muddy Creek by directly filling the laboratory prepared sample containers from the surface water body or by decanting the water from a properly decontaminated collection device. Three surface water samples were collected along Muddy Creek. Surface water sample SW-4 (Water) was collected southwest of the stadium to characterize the surface water quality immediately up -gradient of the subject site. Surface water sample SW-2 (Water) was collected near the bridge over Muddy Creek, where an anticipated groundwater discharge area is suspected to contain dissolved phase constituents in shallow groundwater. Surface water sample SW-1 was collected east of the stadium to characterize the surface water quality immediately down -gradient of the subject site. Surface water sample locations are depicted on Figure 3. The collected samples were immediately placed in laboratory prepared containers and placed in a cooler with ice. The collected samples were submitted to PACE for laboratory analyses for VOCs by Method 8260, SVOCs by Method 8270, and the 13 Priority Pollutant Metals by EPA Method 6010 and EPA Method 7471 (as total metals). 3.4 Stream Sediment Sampling Limited sediment sampling was conducted to assess probable historic manufactured gas plat (MGP) waste sourced upstream of the subject site. Two sediment samples were collected, one immediately upstream of the site at surface water sample location SW-4 (Soil) and one near surface water sample location SW-2 (Soil). Prior to sampling, a visual survey was conducted to evaluate the proposed sample locations. The stream bottom was observed to very rocky, with relatively few noteworthy deposits of fine-grained sediments observed. Areas that were observed to have relatively thicker non -consolidated stream sediment accumulations that consisting of finer grained (>30% silt and clay) sediments were chosen. A field decision was made to locate SW-4 (soil) further up- stream due to the presence of stagnant water with abundant trash at the original proposed location. Each sample June 22, 2018 (Revised October 29, 2018) 4