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U.S. Environmental Protection Agency

Missouri Water Science Center


Current/Planned Activities

Update February, 2007—The USEPA has revised the original area designated as OU4 based upon information collected from 13 additional monitoring wells and stream, vegetation, and soil samples collected after the original OU4 was designated in 2000. As the OU4 Remedial Investigation has progressed, the area of contamination has been refined and the change in map extent of OU4 is consistent with all information collected since 2000, which indicates that the largest PCE concentrations in ground water are west of Miller Street—not east as originally hypothesized. In addition, based upon more recent data, the probable source of the PCE in the ground water also is thought to lie west of Miller Street.

Update February, 2006—The USEPA recently approved a work plan for the Remedial Investigation (RI) of Operable Unit 2 (OU2) and Operable Unit 6 (OU6). The RI of OU2 and OU6 is being done by Parsons Engineering, a consultant conducting the investigation for the Kellwood Company. OU2 the source of a plume of PCE in ground water that extends south of the city. This plume has affected several domestic wells. Considerable activity on these OUs is expected to begin in late spring and summer.

Investigations at OU5 completed — The USEPA recently completed the RI and a Draft Feasibility Study (FS) of OU5, the old hat factory. USEPA investigations of this site have concluded that there is minimal PCE contamination present and OU5 is not the source of PCE contamination that resulted in closure of city wells 1 and 2. The Draft FS of OU5 examines remedial alternatives for this site. The FS will be discussed at a public meeting in March 2006.

Remediation of OU1 continues — The USEPA installed a remediation system called an ART (Advanced Remedial Technology) well at OU1 in 2005. The USEPA remediation contractor, Black and Veatch Special Projects Corporation, has been testing and optimizing the systems performance. As of January 2006, the system has removed more than 300 pounds of contaminants (mostly PCE) from the soil and ground water. An update of the system will be presented at the March 2006 public meeting.

OU4 investigation continues — OU4 (East New Haven) is the largest Operable Unit of the Riverfront site, encompassing the east half of the city north of Highway 100. There is no known or obvious source of PCE in this area and the USEPA has been carefully mapping contamination in ground water and working their way “upgradient” to identify the source of the contamination. OU4 is the suspected source of the PCE contamination that resulted in closure of city wells 1 and 2. Four additional shallow (less than 150 ft deep) monitoring wells were installed in 2005 and several series of soil borings conducted as the USEPA closes in on the source of the contamination.  PCE concentrations as high as 8,000 ug/L have been detected in this area.

Update March 1, 2005—Construction begins on OU1 cleanup. Construction on the Advanced Remedial Technology (ART) extraction well at OU1 began on February 28, 2005. EPA’s contractor, Black and Veatch Special Projects Corporation, is overseeing the installation of this well and related equipment. The ART well and associated machine building will be installed on the east part of the former Riverfront building. The facility was partially demolished and currently (2005) is owned by the Industrial Development Authority of New Haven, and is being used by the Lions Club. The ART well will be drilled through the alluvial sediments to the top of bedrock (about 30 ft deep). The well will pump ground-water up to the surface where PCE and other volatile organic compounds (VOCs) will be “stripped” from the water by compressed air. The VOCs will be piped to a carbon filter unit inside the machine building where they will be collected and disposed of properly. The system should be installed and ready for testing in April 2005. In addition, EPA will be installing three permanent monitoring wells at OU1 to monitor the long-term performance of the ART system and the migration of the PCE plume moving toward the Missouri River. One of the wells will be located near the ART well and the remaining two wells will be installed near the boat ramp on the outside toe of the flood protection levee.

OU2 and OU6 — EPA and the Kellwood Company (Kellwood) are completing the final edits on the work plan for the remedial investigation (RI) of OU2, the former Kellwood metal facility on south Industrial Drive. RI field work should begin mid-summer 2005. PCE has migrated in the ground water from OU2 to the south resulting in OU6. OU6 includes several hundred acres south of OU2 west of Highway C and north of Boeuff Creek. During the fall of 2004 Parsons Corporation, Kellwood’s environmental consultant, installed 8 monitoring wells in two locations to obtain preliminary information on the depth of the PCE contamination. Kellwood also continues to assist homeowners whose wells have been affected by PCE emanating from OU2. A total of five private wells have been affected by the PCE contamination at OU2. The Missouri Department of Natural Resources (MDNR) is working with the Missouri Well Installation Board to impose strict new requirements on the installation of wells in the OU6 area. The well board has instructed the MDNR to move forward with an emergency rule which is being referred to the Missouri Attorney General’s Office. For more information on the status of the emergency rule and drilling requirements in the OU6 area contact Steve Sturgess at MDNR at 573-368-2100 or email at steve.sturgess@dnr.mo.gov

Update November 19, 2003—The Remedial Investigation of Operable Unit 4 (OU4) and Operable Unit 5 (OU5) began during the summer of 2003. Investigation activities at OU4 include additional tree-core sampling, sanitary sewer sampling, and the installation of additional monitoring wells in the vicinity of Miller Street and Maiden Lane. Data from previously installed monitoring wells indicates that the plume of PCE contamination that resulted in the closure of city wells W1 and W2 may originate in this area. During October, 2003 an additional 40 trees were sampled in this area. One monitoring well cluster (BW-10, and BW-10A) has already been installed and two additional well clusters will be installed this winter. Tree-core and monitoring well samples will be reviewed and the results used to determine locations for soil and indoor air sampling.

Field activities at OU5 (old hat factory) began in November 2003. These activities included soil borings near and beneath the building, sampling of nearby sanitary sewer lines, and the installation of a second monitoring well (BW-12A) southeast of the factory along Washington Street. More than 100 soil samples were collected and analyzed for PCE and additional soil sampling is planned.

Operable Unit 2 (OU2)--The USEPA is finalizing an agreement with a private company to initiate the work on the remedial investigation of this site. The USEPA also continues to monitor ground- and surface-water quality and flow in the vicinity of this site including nearby city well W3.

Operable Units 1 and 3 (OU1 OU3)-- The USEPA issued the final ROD (Record of Decision) documents for these two sites in September 2003 and is starting the remedial design for these sites. Three additional monitoring wells were installed at OU3 as part of the long-term monitoring program discussed in the ROD.

Update July 2, 2003—The USEPA has scheduled a public meeting for Tuesday July 29, 2003 at 7:00 p.m. at the Trinity-Lutheran Church, 9521 Highway 100, New Haven, Missouri, to discuss the proposed plans for addressing contamination at Operable Unit 1 (Front Street Site) and Operable Unit 3 (Old City Dump). Field investigations for the Remedial Investigation (RI) of Operable Unit 4 (East New Haven) and Operable Unit 5 (Old Hat Factory) are continuing. In an effort to continue tracking the deep bedrock plume of PCE in the north part of the City to its source(s), an additional monitoring well cluster was recently installed at Operable Unit 4 near the intersection of Miller Street and Maiden Lane. Part of the old hat factory building is being demolished by the property owner, and when demolition is complete (late summer), the USEPA will conduct subsurface investigations at that site. Sampling of the entire monitoring well network and area streams and springs for all operable units is scheduled to begin in late July.

Update July 2, 2003—The USEPA has recently completed the remedial investigation (RI) report of operable units OU1 (downtown site) and OU3 (old city dump). The RI report was prepared by the U.S. Geological Survey and presents the findings of the investigation of the extent and magnitude of PCE (tetrachloroethene) contamination in soil, ground water, surface water, and vegetation at these operable units. An ecological risk assessment and a draft feasibility study (FS) report describing possible alternatives to cleaning up the contamination at these two operable units have also been completed by Black & Veatch Special Projects Corporation. In addition, the Missouri Department of Health and Senior Services completed baseline human-health risk assessments for OU1 and OU3. These reports will be released to the public during the April 1, 2003 public meeting to be held in New Haven.

Update March 3, 2003—The current remedial investigation-feasibility study (RI-FS) of operable units OU1 (downtown area) and OU3 (old city dump) are nearling completion. During early 2003, the USEPA initiated a remedial investigation of Operable Units OU4 (Orchard Street area) and OU5 (the old hat factory). Beginning in April, 2003, the USEPA will begin additional investigation activities in and around these two operable units. The most noticeable of these activities to the public will be the installation of additional monitoring wells.

Update January 10, 2002—The USEPA released results of the third round of quarterly ground and surface-water monitoring during a public availability session on November 15, 2001. Also discussed were results of sampling of the Missouri River and the New Haven sanitary sewer system. Concentrations of PCE were detected at various locations in the sanitary sewer system with the concentrations increasing in proximity to an industrial facility on south Industrial Drive at operable unit 2 (OU2) where PCE was known to have been used and disposed of on the land surface and in the buildings floor drains. No PCE was detected in water or bottom-sediment samples from the Missouri River.

During November, 2001, PCE above the USEPA Maximum Contaminant Level (MCL) of 5 micrograms per liter was detected in a private well south of OU2. A creek in the area of the contaminated private well also contains PCE above 5 micrograms per liter. The final phase of bedrock well drilling was initiated with three wells to be installed. One well is being drilled in an undeveloped land east of Miller Street and about 700 feet south of Orchard Street. A second well is being drilled behind the New Haven Public Library building on Maupin Avenue. Drilling of a third bedrock well near an abandoned hat factory will begin in late January.

Update October 1, 2001—During August and September, the USGS completed the third round of quarterly ground-water monitoring. This included samples from the public supply wells, alluvial and bedrock monitoring wells, and several area streams. Water samples also were collected from the sanitary sewer system and trees along sewer lines were sampled. A characterization of water and bed-sediment in the Missouri near New Haven was conducted to provide data for an ecological risk assessment to be conducted by the USEPA.

Previous Update June 21, 2001—During May, 2001 the USGS completed installation of the second phase of bedrock monitoring wells in New Haven. Wells completed were BW-05 and BW-05A (E. Orchard Street), BW-06 and BW-06A (OU4 east of Miller Street), BW-07 (New Haven Grade School property), and four monitoring wells at OU2 on south Industrial Drive (BW-20, BW-21, BW-21A, and BW-22). The new wells range from 20 feet deep (BW-20) to 530 feet deep (BW-07). During the last week of May and first two weeks of June, a total of 33 water samples were collected from all monitoring wells, New Haven City wells 3 and 4, creeks, springs, and a tap on the city distribution system. Analytical data results for these samples should be available by mid- to late July, 2001. Water levels in the alluvial wells were monitored hourly using data recorders in wells TW-G, TW-C, TW-A, and BW-01 during the recent rises of the Missouri River to study the impact of rapid fluctuations in river stage on ground-water flow in the alluvium and bedrock at OU1. The altitude of the Missouri River was estimated using the river stage at the USGS gaging station upstream at Herman, Missouri and a staff gage at the New Haven boat ramp.

Previous Update April, 2001—During the week of April 16, 2001, reconnaissance sampling of operable units (OUs) 2, 3, and 4 were conducted. The sampling consisted of the collection of water samples from streams, springs, and seeps. Tree-core samples also were collected from trees adjacent to potential disturbed areas, the old city dump, and southwest of OU-2. More than 150 water and tree-core samples were collected and analyzed in the field using a portable gas chromatograph. Water samples containing tetrachloroethene (PCE) were also submitted for laboratory analyses. In addition, the final monitoring well (BW-20) was installed at OU-2.

Previous Update March 20, 2001—Soil sampling in and around the Riverfront building in operable unit 1 (OU-1) resumed on 3/12/01. Soil sampling was performed with a GeoProbe (TM) unit using soil coring equipment. Several ground-water samples also were collected from beneath the building. In addition to samples collected in the vicinity of the Riverfront building, ground-water sampling around the perimeter of the oxidation lagoon, along the asphalt parking lot at the boat ramp, and along the bank of the Missouri River approximately 200 ft (feet) west of the boat ramp also was completed by a second GeoProbe (TM) unit deployed for the ground-water sampling.

Ground-water monitoring wells on Orchard Street, Miller Street (north of the elementary school), and east of the school (BW-05, BW-07, and BW-07) are slated to have PVC casing installed and the wells completed by April 10, 2001. Installation of bedrock monitoring wells at OU-2 (BW-20, BW-21, BW-21A, BW-22) should be completed by April 20, 2001.

On March 27, representatives from the U.S. Environmental Protection Agency (U.S. EPA) and the Missouri Department of Natural Resources (MDNR) met with local citizens to discuss the possibility of forming a Community Advisory Group (CAG) for the Riverfront Site. The U.S. Geological Survey (USGS) provided an update on field activities for the site. A second CAG meeting will be held at the Trinity Lutheran Church in New Haven at 7:00 pm on April 24, 2001.

Previous Update February 14, 2001—Soil sampling around the Riverfront building in OU-1 began on 1/30/01 and ended on 2/08/01. Soil sampling is scheduled to resume within a two weeks. A monitoring well has been drilled on city property located on the west side of Industrial Drive and a second well is currently in the process of being drilled. A third well will be drilled in a lot on the east side of Industrial Drive.

Previous Update January 3, 2001—One monitoring well borehole is to be completed east of Miller Street across from the Middle School. Other activities at New Haven have been on standby due to the weather and the holiday season. Monitoring well drilling is scheduled to resume the week of January 8, 2001 with three monitoring wells to be installed at OU-2 along Industrial Drive. Soil sampling at OU-1 is scheduled to begin in mid-January.


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