MARYLAND DEPARTMENT OF THE ENVIRONMENT

382 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
382
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

MARYLAND DEPARTMENT OF THE ENVIRONMENT

  1. 1. MARYLAND DEPARTMENT OF THE ENVIRONMENT 1800 Washington Boulevard • Suite 620 • Baltimore, Maryland 21230-1719 410-537-3442 • 800-633-6101 x 3442 • www.mde.state.md.us Land Management Administration • Oil Control Program DRINKING WATER SAMPLING AND ENVIRONMENTAL INVESTIGATION Finksburg BP 2129 Baltimore Blvd Finksburg, Maryland Case No. 2006-0416-CL The Maryland Department of the Environment (MDE), Oil Control Program (OCP), in coordination with the Carroll County Health Department (CCHD), is evaluating the impact of methyl tertiary-butyl ether (MTBE) and benzene at the Finksburg BP station/convenience store located in Carroll County. MTBE is a fuel additive commonly used to reduce carbon monoxide and ozone levels caused by auto emissions. There is no national regulatory standard for MTBE in drinking water. In 1997, the U.S. Environmental Protection Agency (EPA) issued an advisory for MTBE of 20 to 40 parts per billion (ppb), based on taste and odor. Although the EPA has not established a regulated Maximum Contaminant Level (MCL) for MTBE, the MDE has adopted an action level of 20 ppb. Benzene is a fuel additive commonly found in gasoline. The U.S. Environmental Protection Agency (EPA) has established a Maximum Contaminant Level (MCL) for benzene at 5 parts per billion (ppb). In August 2005, the MDE-OCP became aware of environmental problems at the Finksburg BP upon receiving groundwater sampling results from the three newly installed monitoring wells. Both MTBE and benzene contamination was detected in one monitoring well at 28,750 ppb and 427 ppb, respectively. During the second round of samples collected in February 2006, MTBE levels had decreased to 260 ppb and benzene was not detected. Finksburg BP is an active gasoline station and convenience store that has been in operation since the early 1980s. Previous registered owners at the facility included Amoco Oil in 1990 and Ewing Oil Company in July 2002. On April 29, 2005, the property and business was sold to Z&K Corporation, an independent owner/operator. Currently the facility has four (4) active underground storage tanks (USTs) with fiberglass reinforced plastic piping (three 10,000-gallon gasoline and one 10,000-gallon diesel tank). The tanks were installed in June 1990. The UST systems are equipped with Stage I and Stage II vapor recovery systems. Eight groundwater monitoring wells, three tank field monitoring pipes and a transient non-community drinking water supply well are currently located on-site. All of these points are monitored on a semi-annual basis. The station’s drinking water supply well remains non- detect for petroleum constituents. In November 2005, CCHD sampled nine (9) nearby drinking water supply wells and petroleum concentrations did not exceed any regulatory levels. At this time, the MDE-OCP does not anticipate expanding the off-site residential sampling effort beyond sampling needed to ensure community safety. Chronology: ■ August 23, 2005. MDE-OCP received Report of Monitoring Well Installation and Sampling – August 16-2005. • Three monitoring wells installed 08/04/05 in response to Emergency Regulations and sampled. (see table for results). • MW-1, located north of the diesel dispenser, installed to a total depth of 52 feet – screened from 52 – 22 feet, with solid casing from 22feet to the surface; • MW-2, located northwest of the UST field, installed to a total depth of 42 feet – screened from 42 – 22 feet, with solid casing from 22feet to the surface; • MW-3, located north of the gasoline dispensers, installed to a total depth of 42 feet – screened from 42 – 22 feet, with solid casing from 22feet to the surface; • Groundwater flow is to the north. Date: February 9, 2009 Page 1 of 5 TTY Users: 800-735-2258 Recycled Paper
  2. 2. ■ November 28, 2005. MDE-OCP letter to Ewing Oil Company and Mr. Zafar Iqbal in response to water sampling data requiring the following: • Perform a helium test of the UST system; • Test all spill catchment basins and containment sumps; • Conduct a self audit of the UST system; • Conduct a ½ mile well survey; • Sample all monitoring wells/observation pipes and the on-site supply every six months; and • Sample select drinking water wells adjacent to the site ■ December 5, 2005. MDE-OCP received a letter from Ewing Oil Company explaining that the property was sold on 4/29/05 to FF&Y LLC (Mr. Iqbal) who currently operates the tanks under Z& K Corp (Mr. Iqbal). ■ December 13, 2005. MDE-OCP received amended UST registration indicating the UST systems are owned by Z&K Corp. ■ January 5, 2006. MDE-OCP received copies of letters from the CCHD to nearby residents regarding water samples collected from their drinking water wells in 11/2006 ■ January 5, 2006. MDE-OCP letter to Ewing Oil Company explaining that all future correspondence, regarding the emergency regulations, would be submitted to Z&K Corp. ■ March 22, 2006. MDE-OCP received the Compliance Summary – March 22, 2006. • UST system helium tested 01/2006 - passed • Sump and catchment basin testing 01/2006 – passed • Consultant recommended sampling 5 nearby private wells located downgradient of the property. - 2136 and 2148 Baltimore Blvd.; and - 2108, 2110 and 2121 Sandymount Rd. • Groundwater flow direction is to the north • Report includes a ½-mile well receptor survey ■ July 25, 2006. MDE-OCP received faxed copy the Report of Monitoring Well Installation and Sampling – July 2006. Sampling conducted on 02/23/2006 (see table for results) ■ September 22, 2006. MDE-OCP received faxed copy the Report of Monitoring Well Gauging and Sampling – September 2006. Sampling conducted on 09/05/2006 (see table for results). ■ December 4, 2006. MDE-OCP directive letter requiring the submittal of a Subsurface Investigation Work Plan, no later than January 31, 2007. ■ January 9, 2007. MDE-OCP received the Report of Monitoring Well Gauging and Sampling – December 22, 2006. Sampling conducted on 12/15/06 (see table for results). ■ January 17, 2007. MDE-OCP received the Subsurface Investigation Work Plan-January 8, 2007. • Proposed the installation of six direct push boring, to be later converted to 2 inch diameter monitoring wells; • Soil and groundwater sampling and analysis; and • Submittal of an Assessment Report. ■ March 28, 2007. MDE-OCP approved the Work Plan –January 8, 2007 with modifications. ■ May 3, 2007. MDE-OCP received the Report of Monitoring Well Gauging and Sampling – April 20, 2007. Sampling conducted on 03/30/07 (see table for results) • Site map shows tank field monitoring pipes, potable supply well and diesel dispenser locations Date: February 9, 2009 Page 2 of 5 TTY Users: 800-735-2258 Recycled Paper
  3. 3. ■ August 9, 2007. MDE-OCP received the Report of Monitoring Well Install, Gauging and Sampling-August 7, 2007. • Groundwater monitoring completed on 07/11/07. (see table for results) • Five (5) additional monitoring wells installed on-site on 06/20/07- well completion reports submitted ■ March 7, 2008. MDE-OCP letter to Z and K Corporation regarding the additional testing requirements for active UST systems located in high-risk groundwater use areas. ■ September 4, 2008. MDE-OCP Notice of Violation (NV-OCP-2009-015P) to Z and K Corporation requiring: • Complete sampling of the monitoring well network(MW1 through MW8; TF1 and TF2) • Sample the station’s drinking water well • Complete UST system testing (helium, spill catchment basins, containment sumps) ■ October 21, 2008. MDE-OCP phone conversation with Mr. Zafar regarding NOV-OCP-2009-015P. • Facsimile sent to Mr. Zafar regarding information that must be submitted to MDE-OCP ■ October 24, 2008. MDE-OCP received, via facsimile, the passing results of UST system testing • Spill catchment basin testing completed on 07/28/08 • Containment sumps passed following repairs to Diesel sump- 04/28/05 • Line testing completed on 08/21/08 • Leak detector testing completed on 08/21/08 • Helium testing –passing results on 10/29/08 ■ November 19, 2008. MDE-OCP received the Site Status Report: 2nd Bi-Annual 2008-November 17, 2008. • Groundwater monitoring completed on 10/30/08 (see table for results) Future Updates ■ Future updates on this case investigation will be posted at www.mde.state.md.us [at the MDE home page, (select) Land, (select) Program, (select) Oil Control, (select) Remediation Sites]. Contacts: ■ Maryland Department of the Environment (MDE) - Oil Control Program: 410-537-3443 ■ Carroll County Health Department (CCHD) 410-876-4972 Disclaimer The intent of this fact sheet is to provide the reader a summary of site events as they are contained within documents available to MDE. To fully understand the site and surrounding environmental conditions, MDE recommends that the reader review the case file that is available at MDE through the Public Information Act. The inclusion of a person or company’s name within this fact sheet is for informational purposes only and should not be considered a conclusion by MDE on liability, involvement in a wrongful act or contribution to environmental damage. Date: February 9, 2009 Page 3 of 5 TTY Users: 800-735-2258 Recycled Paper
  4. 4. Monitoring Well Sample Results at the Finksburg BP station located at 2129 Baltimore Boulevard Other Constituents of Concern On-site Monitoring Wells at Tertiary butyl Alcohol (TBA) - unregulated the Finksburg BP station Tert-Amyl Methyl Ether (TAME) – unregulated Tert-Amyl Alcohol - unregulated Sampling Benzene MTBE TPH/GRO – MCL at 47 ppb Date MCL – 5 ppb Action Level – 20 ppb TPH/DRO – MCL at 47 ppb MW1 08/04/05 Non detect (ND) ND ND (Installed 08/2005) 02/23/06 ND ND ND Total Depth - 52 ft 09/05/06 ND ND ND 12/15/06 ND ND ND Quarterly 03/30/07 ND ND ND 07/12/07 ND ND ND 10/30/08 ND ND ND MW2 08/04/05 ND ND ND (Installed 08/2005) 02/23/06 ND ND ND Total Depth - 42 ft 09/05/06 ND ND ND 12/15/06 ND ND ND 03/30/07 ND ND ND 07/12/07 ND ND ND 10/30/08 ND ND ND MW3 427 28750 TBA – 3,930 ppb; TAME – 3,200 ppb (Installed 08/2005) 08/04/05 TAA – 359000 ppb Total Depth - 42 ft 02/23/06 ND 260 TAME 19.1ppb; TPH-GRO 291 ppb 271 9520 TBA – 1,095 ppb; TAME - 1,211 ppb 09/05/06 TAA – 111 ppb 212 9600 TBA – 1,060 ppb; TAME – 932 ppb 12/15/06 TAA – 100 ppb 03/30/07 ND ND ND 07/12/07 257 10240 TBA-439 ppb; naphthalene – 42.7 ppb, 10/30/08 47 1400 TBA-180 ppb; naphthalene – 5 ppb MW4 (Installed 07/2007) Total Depth – 40 ft 07/12/07 ND ND ND 10/30/08 ND ND ND MW5 (Installed 07/2007) Total Depth - 40 ft 07/12/07 ND ND ND 10/30/08 ND ND ND MW6 (Installed 07/2007) Total Depth - 40 ft 07/12/07 ND 556 TBA – 167 ppb; 10/30/08 0.9 43 TBA – 41 ppb MW7 (Installed 07/2007) Total Depth - 40 ft 07/12/07 ND 3 ND 10/30/08 3 MW8 (Installed 07/2007) Total Depth - 40 ft 07/12/07 ND ND ND ND ND ND 10/30/08 TF1 07/12/07 DRY DRY 10/30/08 TF2 07/12/07 DRY DRY 10/30/08 Date: February 9, 2009 Page 4 of 5 TTY Users: 800-735-2258 Recycled Paper
  5. 5. Drinking Water Sampling results in the Finksburg Area near the Finksburg BP Station Sample location Sample dates Petroleum constituents of Concern MTBE Other petroleum constituents (20 ppb – action level) BP – 08/04/05 ND ND BP Station 2129 Baltimore Boulevard CCHD- 11/2005 ND ND BP- 02/23/06 ND ND BP- 09/05/06 ND ND BP- 12/15/06 ND ND BP- 03/30/07 ND ND BP – 07/12/07 ND ND BP – 10/30/08 ND ND Off-site Private Wells 2150 Baltimore Boulevard CCHD- 11/2005 0.71 ND 2151 Baltimore Boulevard CCHD- 11/2005 ND ND 2153 Baltimore Boulevard CCHD- 11/2005 ND ND 2154 Baltimore Boulevard CCHD- 11/2005 ND ND 2015 Sandymount Road CCHD- 11/2005 ND ND 2016 Sandymount Road CCHD- 11/2005 ND ND 2017 Sandymount Road CCHD- 11/2005 ND ND 2101 Sandymount Road CCHD- 11/2005 1.17 ND 2108 Sandymount Road CCHD- 11/2005 0.64 ND Date: February 9, 2009 Page 5 of 5 TTY Users: 800-735-2258 Recycled Paper

×