As requested by the U.S. Environmental Protection Agency (EPA), Tetra Tech EM Inc. (Tetra Tech) conducted field oversight of investigation activities in Clear Creek downstream from the Lemon Lane Landfill site in Monroe County, Indiana. Tetra Tech performed this work for EPA under Contract No. 68-W6-0037, Work Assignment No. 941-RSBD-0529. Viacom, Inc. (Viacom), is the responsible party for the site. Normandeau Associates (Normandeau), a division of RME Environmental, was contracted by Viacom to conduct fish electroshocking and submit fish tissue samples to a laboratory for analysis. PSARA Technologies, Inc. (PSARA), collected associated sediment and surface water samples. In general, field sampling procedures were conducted in accordance with the Viacom sampling plan dated November 2002. Deviations from the plan are detailed below.

This report summarizes Tetra Tech's oversight observations for November 11 through 14, 2002; issues and developments that arose during the reporting period; and future activities. Tetra Tech's photographic log of field activities is provided in Appendix A of this oversight summary. A copy of Tetra Tech's oversight field notes is included in Appendix B. The attachment contains a copy of Normandeau's sampling log.

OVERSIGHT OBSERVATIONS

This section discusses daily fish electroshocking and sampling activities conducted in Clear Creek in Monroe County, Indiana, from November 11 through 14, 2002. Deviations from Viacom's November 2002 field sampling plan are discussed in the daily summaries and in the "Issues and Developments" section. The field work was conducted in conjunction with stream investigation activities at Conard's Branch and Richland Creek downstream of the Neal's Landfill site in Monroe County, Indiana. Field oversight associated with Neal's Landfill was conducted from November 12 through 14, 2002, under EPA Contract No. 68-W6-0037, Work Assignment No. 943-RSBD-0539. Some issues that arose during the field investigations apply to both the Lemon Lane Landfill and Neal's Landfill work assignments and are discussed in light of concurrent work activities at both creeks and Conard's Branch.

The sampling plan identifies four sampling sites as Locations l, 2, 3, and 4, all of which are near bridges that span Clear Creek. Locations 2, 3, and 4 correspond to sites where Normandeau sampled fish in 1999 and 2000. Normandeau sampled fish near Location 1 in 1996; since then, roadway construction and the demolition of the former RCA plant have resulted in minor changes in the sampling reach. Table 1 lists sampling sites and the names used for them in earlier plans and reports. For clarity and ease of reference, this report identifies each site by the name of the street nearest to the sampling reach, as indicated in Table 1.

Weather conditions on November 11 through 14, 2002, were mild with foggy mornings and sunny afternoons. Midday temperatures ranged from the low 40s to the mid-50s øF. About I inch of rain fell across the region on November 10. As a result of the recent rainfall, sampling in Clear Creek was conducted under bank-full conditions.

Monday, November 11, 2002

At 8:00 a.m., Tetra Tech picked up a digital camera for the field oversight project from its Louisville, Kentucky, office and then left for Bloomington, Indiana. At about 9:00 a.m., Tetra Tech called George Christian of Normandeau and agreed to meet at the Interim Storage Facility (ISF) at the Winston- Thomas WastewaterTreatment Plant in Bloomington.

At 10:00 a.m., Tetra Tech arrived at the ISF and met with Richard McCandless of PSARA and George Christian, Charles Dix, and Jeffrey Davies of Normandeau. At 10:30 a.m., Normandeau finished packing the required field equipment, and Tetra Tech, PSARA, and Normandeau left for the Strain Ridge Road site.

The Strain Ridge Road site is about 20 miles downstream from Lemon Lane Landfill. Normandeau intended to follow standard field procedures and begin sampling at the most downstream site, but field conditions made electrofishing unsafe and impractical at the Strain Ridge Road site. About 1 inch of rain had fallen across the region in the previous 24 hours. High water levels and flow velocity in the main channel made conditions unsafe for electroshocking. The recent rainfall had also reduced visibility in the creek to less than 1 foot, complicating fish retrieval during electroshocking. Tetra Tech, Normandeau, and PSARA agreed to begin sampling further upstream at the Fluckmill Road site.

At 11:00 a.m., Normandeau, PSARA, and Tetra Tech arrived at the Fluckmill Road site, about 10 miles downstream from the Lemon Lane Landfill. Target species for the Fluckmill Road site included creek chub (Semotilus atromacu/atus) and green sunfish (Lepomis cyanellus). Table 2 summarizes the target species, their feeding guilds, the number and types of samples submitted for analysis, and the target weight ranges. Stream investigation activities are documented in Photographs No. 1 through 16.

Clear Creek at Fluckmill Road is predominantly erosional habitat with alternating riffle and run sequences, gentle meanders, and occasional eddy pools. Streamside woody vegetation consisted almost exclusively of sycamore trees, which provided habitat in numerous root balls and snags. The entire reach was at bank-full levels, and recent high water had scoured streamside herbaceous vegetation. In the lower portion of the reach just upstream of the bridge, the midstream depth was 1 to 2 feet, and the creek was 40 to 50 feet wide (see Photographs No. 1 through 8). The middle and upper reaches were deeper and narrower, with an average midstream depth of 2 to 4 feet and a width at bank full of 20 to 30 feet (see Photographs No. 10 through 15). Water clarity extended to the streambed in all but the main channel of the upper reach (see Photograph No. 9).

At 11:20 a.m., Normandeau began electrofishing upstream of the Fluckmill Road bridge. From 11:20 a.m. until 12:40 p.m., Normandeau electrofished in representative riffle, run, and pool areas throughout the lower and middle reaches. Fish samples were placed in 5-gallon buckets, and fresh, aerated water from the creek was added as needed. At 12:50 p.m., Normandeau informed Tetra Tech that creek chubs had been relatively easy to obtain, but green sunfish were not as plentiful. Normandeau stated that longearsunfish (Lepomis megalotis) would be collected in the upper reach to ensure that enough samples from the pelagic feeding guild were available. Normandeau collected sufficient green sunfish in the upper reach and stopped electrofishing at about 1:45 p.m. The total length of the reach sampled was about 300 yards. Although the sampling reach was extended beyond the length historically sampled at the site, no other deviations from the sampling plan were necessary.

At 11:30 a.m., PSARA collected the downstream composite sediment sample. The middle composite sediment sample was collected at 12:30 p.m., and the upstream composite sediment sample was collected at 1:30 p.m. The sampling locations were selected based on the area of the stream sampled by Normandeau and were spaced fairly equally over the 300-yard reach. At the middle reach sampling location, Richard McCandless indicated that PSARA planned to collect one composite sediment sample each from the upper, middle, and lower reaches and then composite the three composite samples in a resealable, plastic bag. This final composite sample was to be submitted for laboratory analysis. Mr. McCandless wore disposable gloves and collected sediment from the streambed by hand. PSARA's sediment sampling procedure deviated from the following elements of the sampling plan:

• The sampling plan calls for three sediment samples (no mention of compositing is made) from each sampling site to be submitted for laboratory analysis.
• The sampling plan indicates that samples will be collected with a stainless-steel scoop and transferred to 4-ounce, precleaned, labeled, glass jars.
• The sampling plan indicates that sampling equipment will be decontaminated and that rinsate samples will be analyzed.

At the middle reach sampling location, Tetra Tech discussed PSARA's sampling approach with Mr. McCandless. Based on PSARA's approach, Tetra Tech requested that representative sediment samples be composited from anywhere in the sampling reach rather than from arbitrary locations in the stream where sediment might not be as available or as representative. Mr. McCandless indicated that he would collect samples that were representative of each reach.

At the upper reach sampling location, PSARA collected sediment from beneath a bank of leaf litter (see Photograph No. 16). Tetra Tech informed PSARA that sediment should be collected from representative depositional areas and not from the fine detritus beneath masses of organic matter. Tetra Tech also informed Mr. McCandless that collecting sediment by hand might bias the sample analytical results because the smallest size fraction of the sediment would be lost during collection. Tetra Tech informed Mr. McCandless that using a scoop is a standard procedure to ensure that samples include representative fractions of the size assemblage present in the sediment. Mr. McCandless stated that PSARA was collecting samples by hand to avoid decontaminating equipment and submitting rinsate samples for analysis. Mr. McCandless also informed Tetra Tech that all surface water samples would be collected on Thursday, November 14, and that all surface water and sediment samples would be shipped to analytical laboratories at the same time. Surface water samples were being collected later because they have a shorter holding time for analysis.

At 2:20 p.m., PSARA, Normandeau, and Tetra Tech left the sampling site for the ISF. At 2:50 p.m., Normandeau began setting up purge buckets at the ISF. Fish samples were placed in aerated, 5-gallon buckets. Fish were not fed and were kept in the buckets for at least 24 hours to purge their digestive tracts. Each bucket had a mesh screen taped inside about 5 inches above the bottom of the bucket. The mesh screen prevented the fish from ingesting the purged material that settled to the bottom of the bucket. Purging the digestive tract is an alternative to removing the gut contents of each fish. The digestive tract must be either removed or purged because it is not representative of contaminant concentrations bioaccumulated in fish tissue over time. At 3:10 p.m., Tetra Tech, Normandeau, and PSARA left the ISF for the Country Club Road site.

At 3:15 p.m., all the parties arrived at the Country Club Road site about 3 miles downstream from the Lemon Lane Landfill and about 1 mile upstream from the ISF. Target species for the Country Club Road site included creek chub and green sunfish. Table 2 summarizes the target species, their feeding guilds, the numbers and types of samples submitted for analysis, and the target weight ranges. Stream investigation activities are documented in Photographs No. 17 through 24.

Clear Creek at Country Club Road can be characterized as erosional habitat with alternating and run sequences in gentle meanders. Streamside woody vegetation consisted of sycamore, maple, and elm trees; fewer eddy pools, root balls, and snags were present than at the Fluckmill Road and Strain Ridge Road sites. The entire sampling reach was at bank full, and recent stomm water surge had scoured streamside herbaceous vegetation (see Photograph No. 19). The 1 50-yard reach was about 25 feet wide in riffle and run areas with narrower meanders. Midchannel depths ranged from 1 to 2 feet, but side- channel pools were about 2 to 3 feet deep. Water clarity was exceptionally good and extended to the streambed in all but the deepest pools (see Photograph No. 20). Tetra Tech observed evidence of recent beaver activity about 50 yards downstream of the bridge, including the recent placement of the main support log for a new dam (see Photographs No. 21 and 22).

Normandeau and PSARA prepared and unloaded their sampling equipment, and at 3:40 p.m., Normandeau began electrofishing. Nommandeau stated that it usually samples a reach by beginning at the lower portion and proceeding upstream to the upper portion. At the Country Club Road site, however, Nommandeau began electrofishing at the upper reach and proceeded downstream from the bridge. This deviation from standard practice was not expected to affect sample analytical results because the reach downstream of the bridge was deeper and provided more appropriate habitat for the two target species, green sunfish and creek chub.

PSARA collected sediment from the lower, middle, and upper reaches between 3:40 and 4:30 p.m. Sediment samples were composited from representative substrate consisting of sand, silt, and gravel in depositional areas and at the edges of the stream bank. Numerous sand and gravel bars provided ample substrate for sediment sampling.

Normandeau electrofished the reach until about 4:40 p.m. and then resumed to the bridge in order to sort fish. Normandeau infommed Tetra Tech that the creek chubs obtained in the sampling reach might be slightly bigger than the size range identified in the sampling plan. Tetra Tech told Nommandeau that this deviation was acceptable because sampling should reflect the size ranges of the target species at the site. In addition, compared to smaller fish, larger fish would be more likely to provide representative infommation on bioaccumulation in the sampling reach. At 5:05 p.m., all the parties left the sampling site for the ISF. After fish were placed in appropriately labeled purge buckets (see Photographs No. 25 and 26), Normandeau and Tetra Tech concluded work for the day and left the ISF at 5:45 p.m.

Tuesday, November 12, 2002

On Tuesday, November 12, 2002, no field work was conducted at Clear Creek. In the morning early aRemoon, Tetra Tech oversaw stream investigation activities in Richland Creek and Conard's Branch. In the afternoon and evening, Tetra Tech oversaw sample processing for fish collected during the previous day from the Fluckmill Road and Country Club Road sites in Clear Creek.

At 9:00 a.m., while overseeing electrofishing at Conard's Branch, Tetra Tech relayed project infommation to Jeffrey Liflca, Tetra Tech's site manager in its Chicago, Illinois, office. Tetra Tech left him a message seeking confirmation that (1) PSARA should not collect sediment samples from beneath masses of organic matter and (2) fish samples submitted for analysis should reflect the size ranges present, with a bias toward selecting larger fish if target size samples were not available. At 12:10 p.m., Tetra Tech received a message from Mr. Liflca confirming that no leaf matter should be present in sediment samples and that all samples should reflect field conditions. At 12:15 p.m., Richard McCandless of PSARA was preparing to collect the lower reach sediment sample from the Richland Creek downstream site. Tetra Tech repeated its previous instruction to Mr. McCandless and infommed him that sediment samples should not contain organic matter. At 12:45 p.m., while collecting sediment from the middle reach in Richland Creek, Mr. McCandless stated that some of the sediment samples had contained '`organic mud" but that he had removed leaves and other organic matter from samples collected during the previous day at the Fluckmill Road and Country Club Road sites in Clear Creek.

After sampling was completed at the Richland Creek sites, Tetra Tech arrived at the ISF at 3:10 p.m. Nommandeau returned from lunch at 3:20 p.m. and began processing samples collected from the Fluckmill Road and Country Club Road sites. From 3:30 to 4:10 p.m., Nommandeau processed whole body samples of green sunfish and creek chub from the Fluckmill Road site (see Photographs No. 27 and 28). All the green sunfish samples and most of the creek chub samples were within the target weight range specified in the sampling plan. Tetra Tech requested that Nommandeau use the larger creek chubs to complete the sampling required for the Fluckmill Road site. Nommandeau complied with this request and used two large creek chubs (86 and 90 grams) as a composite for the matrix spike/matrix spike duplicate (MS/MSD) sample. From 4:30 to 5:10 p.m., Normandeau processed whole body samples of green sunfish and creek chub from the Country Club Road site. All the Country Club Road samples were within the target weight range specified in the sampling plan. Table 3 lists relevant details for fish tissue samples submitted for analysis, including the sample identification numbers, the samples' conformance or nonconformance with the sampling plan, and the quality control samples used.

Wednesday, November 13, 2002

At 8:15 a.m., Tetra Tech arrived at the Harrodsburg Road exit off State Route 37 to meet Normandeau, PSARA, and Dennis Williamson of the Monroe County Health Department (MCHD). At 8:30 a.m., all the parties proceeded to the Strain Ridge Road site and arrived at 8:40 a.m. The Strain Ridge Road site is about 20 miles downstream of Lemon Lane Landfill and is the farthest downstream reach sampled. The Strain Ridge Road site is about I mile upstream of the confluence of Clear Creek and Salt Creek; the confluence of the two creeks is just south and downstream of the outlet of the Monroe Reservoir Dam. Target species for the Strain Ridge Road site included green sunfish and longear sunfish. Because green sunfish were not available, rock bass were substituted for analysis of the pelagic feeding guild in addition to longear sunfish. Table 2 summarizes the target species, their feeding guilds, the numbers and types of samples submitted for analysis, and the target weight ranges. Stream investigation activities are documented in Photographs No. 29 through 40.

Clear Creek at Strain Ridge Road can be characterized as low-gradient, depositional habitat with muddy, steeply incised banks. The sampling reach was about 20 feet wide, and the main channel was more than 6 feet deep in some places. Riffle areas were likely absent even under extreme low-flow conditions. The flow velocity was greatly reduced compared to conditions observed on Monday, November 11, 2002. Water clarity had also improved to about 3 to 4 feet of visibility (see Photograph No. 36). Extensive areas of organic debris, leaf litter, and submerged snags were evident throughout the reach (see Photographs No. 34 through 40). These conditions typically provide favorable habitat for various fish species, especially sunfish and other members of the pelagic feeding guild. The numerous in-stream obstacles, the deep main channel, and the steep banks made it difficult for Normandeau's personnel to make their way upstream with their equipment.

At 9: 10 a.m., PSARA began collecting sediment from a depositional area that Tetra Tech identified just below the Strain Ridge Road bridge (see Photographs No. 30 and 31). The sediment location below this bridge was sampled by Normandeau in 1999 and 2000. At 9:15 a.m., Normandeau began electrofishing the lower reach just upstream of the bridge (see Photographs No. 32 and 33). At 9:40 a.m., Normandeau stopped electrofishing to maneuver equipment up the banks and around obstructions in the stream (see Photograph No. 35). Normandeau reported that no green sunfish had been observed in the entire lower reach.

At 9:50 a.m., PSARA collected sediment from the middle reach upstream from the in-stream obstructions that Normandeau was negotiating (see Photograph No. 34). At 9:55 a.m., Normandeau resumed electrofishing in the middle reach. At 10:10 a.m., Normandeau stopped electrofishing to move equipment around additional obstacles and cross the deep main channel (see Photograph No. 37). Normandeau reported that longear sunfish were available but that no green sunfish were encountered in the middle reach. At 10:20 a.m., Charles Dix and Jeffrey Davies of Normandeau continued electrofishing along the south side of the creek to the railroad bridge, while George Christian scouted the sampling reach upstream of the railroad bridge (see Photograph No. 38). The historical sampling reach extended from the Strain Ridge Road bridge to the railroad bridge. However, Normandeau had not encountered any green sunfish in the entire historical reach. At 10:25 a.m., George Christian scouted sites upstream of the railroad bridge to determine whether it would be possible to extend the historical reach upstream toward State Route 37. Tetra Tech told Normandeau that any bluegill (Lepomis macrochirus) or rock bass (Ambloplites rupestris) observed in the extended reach should be collected for possible substitute sampling.

At 10:35 a.m., Tetra Tech called Jeffrey Lifka and suggested the following possible deviations from the sampling plan to address the absence of green sunfish: (1) substitute other species from the pelagic feeding guild (such as bluegill or rock bass) or (2) use 10 longear sunfish instead of 5 longear sunfish and 5 green sunfish.

At 11:00 a.m., Normandeau began electrofishing upstream of the railroad bridge (see Photograph No. 39). Habitat upstream of the bridge appeared to be more favorable for sunfish species, as it had more snags, root balls, and shallow pools. The main channel upstream of the railroad bridge was only about 4 feet deep and presented more favorable working conditions for Normandeau. Normandeau proceeded about 150 yards upstream from the railroad bridge. At 1 1:35 a.m., Normandeau stopped electrofishing about 100 yards downstream of State Route 37. No green sunfish were observed in the entire 450-yard reach. Normandeau collected five rock bass from the extended upper reach and retained them for possible substitute sampling.

At l2:20 a.m., PSARA collected the upper reach sediment from below the railroad bridge. According to Richard McCandless, sediment in the upper and middle reaches was sandier than in the lower reach below the Strain Ridge Road bridge.

At 12:00 p.m., PSARA, Normandeau, Dennis Williamson of MCHD, and Tetra Tech left the Strain Ridge Road site. All the parties arrived at the ISF at about 12:20 p.m. At 12:25 p.m., Tetra Tech conferred with Jeffrey LiLka and was informed that rock bass should be substituted for green sunfish for the Strain Ridge Road site. At 12:30 p.m., George Christian of Normandeau called Russ Cepko of Viacom. Mr. Cepko indicated that he might require Normandeau to return to the Strain Ridge Road site in an effort to collect green sunfish. All the parties were away from the ISF for lunch from 12:45 to 1:00 p.m.

At 1:15 p.m., Tetra Tech, Normandeau, and PSARA left the ISF for the Allen Street sampling site. Normandeau had trouble finding the site, and all the parties eventually arrived at the intersection of Allen and Patterson Streets at 1:50 p.m. The Allen Street site is the nearest sampling reach to Lemon Lane Landfill and Illinois Central Spring. Dennis Williamson of MCHD arrived at the Allen Street site shortly afterward and confirmed that the site was located just downstream of 111irois Central Spring. According to Mr. Williamson, the stream reach between Allen and Second Streets had been altered since Normandeau last sampled it in 1996. The former RCA plant had been demolished, and road construction in the area had included alteration and addition of culverts as well as destruction of pool habitat in the sampling reach. The target species for the Allen Street site was creek chub. Table 2 summarizes the target species, its feeding guild, and the type and number of samples submitted for analysis, and the target weight range. Stream investigation activities are documented in Photographs No. 41 through 46.

Clear Creek at Allen Street can be characterized as an erosional, lower-order stream scoured to bedrock. In the entire reach sampled, the creek was less than 10 feet wide at bank full. The average depth was less than 6 inches, with deeper areas present in culverts and near bridges. Water clarity extended to the streambed throughout the reach (see Photograph No. 43) except in a 2-foot-deep pool near the railroad bridge in the extreme lower reach (see Photograph No. 46).

At 2:00 p.m., Normandeau began electrofishing the site, starting at the Allen Street culvert and proceeding upstream toward Illinois Central Spring (see Photographs No. 41 and 42). At 2:15 p.m., Normandeau finished electrofishing in the upper reach about 75 yards upstream of the Allen Street bridge. PSARA collected sediment near the point where Normandeau stopped electrofishing in the upper reach. Historical pool habitat in the upper reach was no longer present near the Allen Street culvert, and Normandeau did not observe any creek chub in the target weight range of 63 to 130 grams. Normandeau observed two size classes of creek chub: (1) approximately 30 grams and (2) 30 to 60 grams. Because the pool habitat necessary to support larger creek chub was no longer available, creek chub in the target weight range were likely no longer present in the sampling reach.

At 2:30 p.m., Normandeau resumed electrofishing downstream of the Allen Street bridge (see Photographs No. 44 and 45). Normandeau continued electrofishing from the Patterson Street culvert to the former RCA railroad bridge south of Patterson Street. A debris pile and pool near the railroad bridge formed the first habitat encountered that was capable of supporting larger creek chub (see Photograph No. 46). By 2:50 p.m., Normandeau conducted electrofishing in about 250 yards of the target reach but had not obtained enough creek chub in the target weight range. Tetra Tech agreed with Normandeau that not enough habitat was available to support creek chub in the target weight range and that samples of smaller specimens would adequately reflect the size assemblage present. Also at 2:50 p.m., PSARA collected sediment from the area near the railroad bridge.

At 3:15 p.m., all the parties left the Allen Street site. By 3:30 p.m., Normandeau, Tetra Tech, and Wes Chambers of PSARA were at the ISF. Normandeau placed fish in purge buckets and began preparing samples collected from Conard's Branch and Richland Creek on November 12, 2002. Tetra Tech oversaw the sample preparation activities until 9:15 p.m.

Thursday, November 14, 2002

Tetra Tech arrived at the ISF at 8:30 a.m. Normandeau was preparing sampling equipment and cleaning and packing field equipment. From 9:10 to 9:30 a.m., Normandeau processed longear sunfish samples from the Strain Ridge Road site (see Photograph No. 47). All the longearsunfish samples were within the target weight range of 30 to 100 grams. From 9:40 to 10:00 a.m., Normandeau processed rock bass samples from the Strain Ridge Road site (see Photographs No. 48 and 49). Rock bass were substituted for the target species, green sunfish, because green sunfish were not available at the site. Rock bass and green sunfish are members of the same feeding guild, so the rock bass samples should yield adequate data for trend analysis. Also, some historical data is available for rock bass. Two rock bass samples exceeded the target weight range at 130 and 225 grams, and one rock bass sample was slightly below the target weight range at 27 grams.

At 10:00 a.m., Normandeau began processing creek chub samples from the Allen Street site. Only one 63-gram creek chub sample was within the target weight range of 63 to 130 grams. Nine smaller creek chubs were submitted for analysis as single samples ranging in weight from 29 to 47 grams. Eight additional creek chubs were composited for se. MS/MSD sample weighing 206 grams. Deviations from the target weight range specified in the sampling plan were required because larger samples were not available at the Allen Street site. The smaller samples submitted for analysis reflect conditions observed in the field. Table 3 lists relevant details for fish tissue samples submitted for analysis, including the sample identification numbers, the samples' conformance or nonconformance with the sampling plan, and the quality control samples used.

At 10:30 a.m., Normandeau began disassembling the sampling station and packing equipment (see Photograph No. 50). At 10:40 a.m., Tetra Tech called Jeffrey Liflca to update him on the project's progress and issues. At 10:45 a.m., Mr. Dix and Mr. Davies of Normandeau left the ISF to get ice and to return any remaining fish to the appropriate sampling locations in Clear Creek. George Christian of Normandeau stayed at the ISF to complete chain of custody and other paperwork associated with the sampling effort. At 11:30 a.m., Tetra Tech and Normandeau left the ISF for PSARA's Bloomington of rice. Tetra Tech obtained a copy of Normandeau's sampling log and left the PSARA of flee at 12:30 p.m.

PSARA collected all the Clear Creek surface water samples before 12:00 p.m. Tetra Tech did not observe the collection of these samples.

Fish tissue samples were sent by overnight courier to Paradigm Analytical Laboratories in Wilmington, North Carolina, for polychlorinated biphenyl (PCB) analysis. Surface water samples and half of the sediment samples were shipped by overnight courier to Heritage Environmental Laboratories in Indianapolis, Indiana, for PCB analysis. The other half of the sediment samples were sent by overnight courier to Test America Inc. in Dayton, Ohio, for analysis for total organic carbon content.

ISSUES AND DEVELOPMENTS

• Allen Street site (Location 1 ) - Nine of ten creek chub samples were below the target weight range.
• Country Club Road site (Location 2) - All samples were within the target weight range.
• Fluckmill Road site (Location 3) - Green sunfish samples were within the target weight range. Four of five creek chub samples were within the target weight range; the fifth sample, which was prepared as an MS/MSD sample, consisted of two fish that exceeded the target weight range.
• Strain Ridge Road site (Location 4) - Longear sunfish samples were within the target weight range. Rock bass were substituted for green sunfish, which were not observed in the entire sampling reach. Of the five rock bass samples, two exceeded the target weight range, two were within the target weight range, and one was slightly below target weight range.

Tetra Tech did not observe collection of surface water samples on Thursday, November 14, 2002

FUTURE ACTIVITIES

As directed by EPA, TetraTech will conduct oversight of future activities conducted in association with the Lemon Lane Landfill site and will provide EPA with field oversight summaries. Planned future activities for the Lemon Lane Landfill site include (1) further groundwater conduit investigations by Viacom and (2) further characterization of fish, surface water, and sediment.

The Normandeau team (George Christian, Charles Dix, and Jeffrey Davies) is familiar with the site area and previously collected fish tissue, sediment, and surface water samples from Clear Creek in 1996, 1999, and 2000. As team leader, George Christian has been involved in decisions regarding the availability of target fish species and substitution of species for sampling. Because this team of electrofishers offers valuable experience and specific expertise in investigations of Clear Creek, Tetra Tech recommends that EPA encourage Viacom to request the team for all future stream sampling at and near the site.