Library: Reports: Cleanup: WT

CBS Corporation

Bloomington Project
P.O. Box 997
Bloomington, IN 47402
(812) 334-0030
(812) 334-7855 (Fax)

DATE: June 10, 1998

FROM: Ray Taylor

TO:

Tom Alcamo, USEPA	John Langley, CBU
Resa Ramsey, IDEM	*Dennis Williamson, Monroe County
*Bette Conway, CBU	Dottie Alke, CBS
*Jim Patrick, CBS	Bill Melilli, CBS
*Mike Hessling, PSARA	Lowell McBurney, BB&L
*Todd Scoville, BB&L	*Mark Bertram, Koester
	*(attended meeting)

SUBJECT: Weekly Progress Status Report - June 2 to June 9

This report is intended to provide a weekly project update regarding the major developments for the remediation work at Winston Thomas. Included are progress updates, sample analytical results, air monitoring results, schedule updates, waste shipping information and field change decisions.

A project status meeting was held on June 9 to discuss the status of remediation at Winston Thomas. The meeting was attended by CBS, PSARA, BB&L, Koester, CBU and Monroe County. The agendas are attached. The following issues were discussed.

Trickling Filter Project

• The three demonstration trial runs were completed on the screening / washing system to clean the Trickling Filter (TF) rock. Processing rates of 100, 150 and 200 ton/hr were run. The last two tests were performed with the downstream spray bar turned off to prevent water carry over with the clean stone. All wipe sample results on the washed stone were non-detect (<1 ug/ 100 cm2) for all the test runs as shown in the attached Sample Log. A memo was issued to the consent decree parties describing the test runs and notifying the parties that BB&L will process the TF rock at the 200 ton/hr rate with the downstream spray bar off.
•  
• Cleaned TF rock wipe sample results for the trial (compliance) tests and the first four days of production are shown in the attached table. Per the approved sampling plan, if the daily sample results are below 10 ug/100 cm2 for seven consecutive days of operation and if no obvious upward trends have been identified, the daily sampling of the stone will be discontinued.
• Samples of the debris (fines) collected off of the stone during all the trial runs were composited per the approved sampling plan and sent to Heritage for analysis of PCB and RCRA characterization for disposal. The PCB result was 1.9 ppm indicating the debris can be disposed as non-TSCA to the South Side Landfill. Disposal will be after receipt of the RCRA characterization, which is due by the end of the week.
• PCB analysis for the debris in each roll off box of debris generated is shown in the attached table. If the results continue to be consistently low after sampling six roll offs of debris, CBS will consider the process debris to be sufficiently characterized for Special Waste disposal. No additional PCB sampling will be performed on the debris sent to the South Side Landfill.
• The carryover of process water with the clean stone was eliminated by shutting off the downstream spray bar before the trial test runs at 150 and 200 ton/hr. Because the carryover water was eliminated, the need for the sump in the clean stone discharge area was eliminated.
• A new quarter inch harp screen was installed to replace the screen with broken strands.
• The attached status report summary sheet shows that approximately 3600 ton of TF stone was processed from June I to 6. Approximately 50 ton of debris (fines) were generated for a waste generation rate of less than 2%.
• The sediment collection rate in the process water collection frac tank will fill the tank in about I 1/2 weeks. The tank will then be changed out and the full box allowed to sit to drain completely. Dry fines from the debris collection box may be added to assure free water will not shake out while the sediment is shipped to the landfill. The sediment was sampled and analyzed at 1.8 ppm. Based on this result the sediment will be disposed as non-TSCA to South Side Landfill.
• The bag filters in the process water loop have been arranged in parallel, with 100 mesh bags in both. The bag screens are being replaced each day and washed out for reuse the next day.
• The clay tiles in the bottom of the TF were found to be broken apart. The tile segments are being excavated and processed with the stone. It was agreed at the weekly meeting to grab some tile fragments from the cleaned stone discharge to be wipe sampled as part of the five daily production samples.
• The recirculated process water spray rate is estimated between 50 and 100 gpm. A sample of the process water was collected on 6/5 after two days of processing and the three compliance tests. The PCB concentration was analyzed at 0.24 ug/L. The closed loop recirculated water will be sampled every three days to track any PCB increase. The disposal of the closed loop water will be performed per the attached BBL memo, satisfying all CBU water discharge requirements per the pending Water Discharge Permit.
• Approximately 30,000 gallons of rain water has again collected in the TF. John Langley gave his approval to sample the water collected in the TF as a batch per the draft CBU discharge permit. If permit levels are satisfied the TF water will again be pumped directly to the sanitary sewer.
• The large pipe headers in the TF consist of two runs about 200 feet long of 32 inch pipe tapering down to about 12 inch pipe. The headers were found to contain residual sludge like the smaller pipe. It was decided to size and dispose of this pipe as TSCA along with the smaller pipe.
• Since the waste debris (fines) generated from the process has been characterized as nonTSCA it is being disposed of in a local Special Waste Landfill, South Side Landfill. It was decided to have South Side Landfill's broker, Terra Limited, provide local roll off service for the debris instead having Koester provide roll offs from Wills Trucking. Wills was bringing rolloffs in from Ohio for the local haul to Indianapolis. BB&L and PSARA will coordinate transportation of the debris and water system sediment to South Side Landfill. Koester will still provide rolloffs from Wills to transport the TF pipe to EQ landfill in Michigan.

Tertiary Lagoon Project

• The harvesting of vegetation from the tertiary lagoon (TF) continued through the week. The harvester will remain on site and be operated by Koester as needed.
• The 48 ft x 48 ft steel filtercake storage box was fabricated.
• Work was nearly completed on welding the dredge pipeline from the TL to the ISF.
• The decon trailer was installed.
• The 110 cu. ft rental press which arrived from Louisiana on Wednesday 6/3 contained damaged membrane plates. All the plates were replaced with new. A memo was received from Koester explaining the delay from the damaged plates. The filter cloth for the rental press arrived Monday, 6/8. Filter cloth for the 220 cu ft press arrived Tuesday 6/9.
• Assembly of the process system inside the ISF, except for the new press was nearly complete by Tuesday, 6/9.
• Polymer was mixed and allowed to age before use.
• Diesel powered centrifugal pumps were added to supplement the diaphragm pumps to fill the filter presses with sludge. The centrifugal pumps will be connected in parallel with the diaphragm pumps and used to initially fill the presses. The diaphragm pumps will be used to finish pressurizing the cake. It is anticipated that the centrifugal pumps will increase the cycle rate to speed up processing. The centrifugal pumps will be checked out to assure they do not cause sludge "blow by" through the filter cloth.
• Pilot testing of polymers was completed. The polymer selected during the previous pilot tests, Allied Colloids #778, is still considered the best polymer to use. This polymer was shown to work with pure sludge, pure clay or mixtures of sludge and clay.
• A meeting was held with John Teague and Bob Koss of EQ Landfill and Koester to coordinate TSCA transportation. EQ has agreed to extend the daily receiving hours until 8 pm, starting in mid-June. EQ also indicated they would receive a minimum of 10 to 15 trucks on Saturday mornings at no extra charge.

Dry Bed Perimeter

• No further excavation was performed due to TF startup and wet weather. The northern perimeter of DB #1 will be excavated as TSCA when time and weather permit.

Abandoned Lagoon

• Analytical results of the geoprobe sampling in the Abandoned Lagoon were received from Heritage Labs. PSARA will present these results to CBS this week.
• Pre-excavation elevations were surveyed for all grids in the Abandoned Lagoon.

Digesters

• The three digesters were not resampled due to weather.
• Stone was backfilled around the digesters to fill the previously excavated grids.

• Additional air monitoring results were obtained through June 2, as shown on the attached Air Sampling Log. These samples were taken during the trickling filter stone excavation and processing. The highest new result is 13.1 ng/m3. The highest result to date is 22 ng/m3, compared to an allowable level of 1000 ng/m3.
• Meteorological data collected to select the appropriate air monitoring sample for analysis is shown in the attached Weekly Meteorological Data Report.
• Personnel sampling was initiated in the TF area. The attached Personnel Sampling Log shows that all results obtained so far are non-detect.
• The need for the sump in the clean TF stone discharge area was eliminated since the carryover water was eliminated by shutting off the downstream spray bar.
• No water was discharged to CBU this week.
• It was decided that CBS, PSARA and CBU will identify and map stormwater outfalls to Clear Creek from the Winston Thomas site. Outfalls will be observed for flow during storm conditions and samples of sediment and water may be taken by the City. CBU will clear paths to known outfalls.
• It was agreed that BBL will install barriers to prevent personnel access under the conveyors.
• PSARA requested that Koester provide a copy of the operating manual for the harvester.
• John Langley reported on the City Utilities Service Board's review of the draft Water Discharge Permit. Water from the Trickling Filter processing can be batched, sampled and discharged after confirmation is received that analysis meets the permit levels. No treatment (i.e. carbon) will be required if the water meets discharge requirements.
• Water from the Tertiary Lagoon processing will be treated through a filter press lined with diatomaceous earth and then through carbon. An initial batch of 60,000 gallons will be held, sampled and confirmed to meet permit requirements before it is discharged, to confirm that the treatment process is adequate. After the treatment system is confirmed, water can be directly discharged after treatment without holding for confirmation. Grab samples of the treated water are to be taken every 12 hours and analyzed to confirm permit limits are being met. Analytical results will be required within 24 hours of sampling. A turbidity meter will be required on the treated water discharge with a chart recorder. A turbidity limit of 5 standard units was established by the City.
• During storm events when the POTW approaches full capacity, CBU will notify CBS to shut down any discharge of process water until further notice.

Trickling Filter

• Obtain RCRA characterization analysis of debris for disposal waste profile.
• Continue processing TF stone at 200 ton/hr.
• Dispose of small TF pipe as TSCA.
• Start stockpiling and sizing large TF pipe for TSCA disposal.
• Install sump pump on upper equipment pad to pump stormwater to process water tank.
• Once RCRA characterization is received, start sending waste debris to South Side Landfill.

Tertiary Lagoon

• Continue weed harvesting
• Complete equipment setup and check out in the ISF.
• Complete installation of the dredge guide wires and pipeline. Pressure test pipeline.
• Set up secondary containnent around the shaker box which receives the sludge from the
• dredge.
• Start up the system initially only on the smaller 110 cu ft press to confirm process parameters and to check the quality of the filtercake produced.
• The new, third press and its filter clothes are scheduled to arrive on Saturday, 6/13 and be
• installed over the weekend. Koester anticipates that all three presses should be operational
• by Monday, 6/15.
• Initiate full scale dredging and dewatering operation.
• CBU plans to mow the grass on the TL berms.
• Koester will provide a revised schedule once the system is in operation and processing rates are determined.
• Koester plans to process 24 hours a day, seven days a week until July 3. They will shut down for the holiday from July 3 until July 6.

Digesters

• Resample three digesters to compare with EPA samples.

Abandoned Lagoon

• Prepare revised excavation drawing based on new sampling results.

Comments or questions regarding this report should be directed to Jim Patrick on 812-334-0030 or Mike Hessling on 812-335-0424 or Ray Taylor on 812-335-8780.

There are eleven attachments this week. * files are in pdf format.

• * Weekly Project Status Report - Trickling Filter Project
• Trickling Filter Weekly Meeting Agenda - June 9, 1998
• Tertiary Lagoon Weekly Meeting Agenda - June 9, 1998
• BBL Environmental Services memorandum proposed approach for water treatment and discharge to the City of Bloomington Wastewater Treatment Plant
• * Sample Log - Trickling Filter Rock, page 1 of 2
• * Sample Log - Trickling Filter Rock, page 2 of 2
• * Sample Log - Debris, Sediment, and Miscellaneous Sampling
• * Sample Log - Trickling Filter Water Samples
• * Air Sampling Log
• * Weekly Meteorological Data Report
• * Personnel Sampling Log