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This Polrep covers Site work performed from Friday 10/9/09 through Thursday 10/15/09. Work on site began at 7am and ended at 5:30pm unless otherwise noted.
Friday 10/9/09
On-site today: OSC Parker, 1 START, 14 ERRS. Safety Meeting at 7 am.
Excavation:
* Continued excavating and installing shoring in Excavation Area 1/Shore System 5/Bay3.
* Three samples collected from 25 feet bgs excavation floor in bays 1/5/2 floor, 1/5/3 floor, and 1/6/1 10 feet bgs and shipped to CLP lab with a trip blank for VOAs.
* Started excavating and installing shoring in Excavation Area 1/Shore System 6/Bay1.
* Continued backfilling Excavation Area 1/Shore System 4 with chitin and Daramend amended soil.
* Excavation Area 2: continued to excavate down to 4 feet bgs. Pulled out additional conduit at southeast edge of excavation. Parametrix observed excavation in afternoon.
Samples collected of coal tar, sludge from a pipe and dark gray soil in Excavation Area 2 and submitted to F&B lab.
Containment Cells:
* Continued to stock pile contaminated soil for subtitle D disposal.
* Finished hauling 27 loads of contaminated soil off-site to Subtitle D landfill. 322 total loads (10,604 tons) hauled off-site to date.
Water Treatment System:
* Continued filling dirty tanks 1 through 3 from excavation.
* Pumped water from tanks 1, 2 and 3 through treatment system into tanks 10 through 13.
Other work:
* Watered roads for dust suppression.
* PID calibrated and used in dirty Excavator and miniexcavator.
* No action level exceedances recorded by Dataram monitoring dust near the excavation work and at two locations near the site perimeter.
* 25-ton haul truck broke a drive line during backfill operations and partially blocked access to the excavation and can’t be moved until Monday.
Saturday 10/10/09
On-site today: OSC Parker, 13 ERRS. Safety Meeting at 7 am.
Excavation:
* Finished excavating and installing shoring in Excavation Area 1/Shore System 6/Bay1.
* Two samples collected from 1/6/1 at 25 feet bgs excavation floor and 1/6/2 at 10 feet bgs and shipped to CLP lab with a trip blank for VOAs.
* Started excavating and installing shoring in Excavation Area 1/Shore System 6/Bay2.
* Started backfilling Excavation Area 1/Shore System 5 with chitin and Daramend amended soil.
* Excavation Area 2: continued to excavate down to 6 feet bgs.
Containment Cells:
* Continued to stock pile contaminated soil for subtitle D disposal.
Water Treatment System:
* Continued filling dirty tanks 1 through 3 from excavation.
* Pumped water from tanks 1, 2 and 3 through treatment system into tanks 10 through 13.
Other work:
* Watered roads for dust suppression.
* PID calibrated and used in dirty Excavator and miniexcavator.
* No action level exceedances recorded by Dataram monitoring dust near the excavation work and at two locations near the site perimeter.
Sunday 10/11/09 - no site work
Monday 10/12/09
Cold
On-site today: OSC Parker, 1 START, 14 ERRS. Safety Meeting at 7 am. (2 ERRS demobbed mid-day.)
Excavation:
* Finished excavating and installing shoring in Excavation Area 1/Shore System 6/Bay2.
* Two samples collected from 1/6/1 at 25 feet bgs excavation floor and 1/6/2 at 10 feet bgs and shipped to CLP lab with a trip blank for VOAs.
* Finished backfilling Excavation Area 1/Shore System 5 with chitin and Daramend amended soil.
* Excavation Area 2: finished excavating down to 6 feet bgs. OSC, START and ERRS dug test pits with shovels looking for solvent smell. Smell only detected in two areas – TP14 and TP23. Those areas will be excavated further.
Containment Cells:
* Continued stock piling contaminated soil for subtitle D disposal and cover pile with plastic.
Water Treatment System:
* Continued filling dirty tanks 1 through 4 from excavation.
* Pumped water from tanks 1, 2 and 3 through treatment system into tanks 10 through 13.
* Sampled tank 10 as representative of tanks 10 through 13 and sent sample to F&B lab and Specialty lab for pH.
Other work:
* No dust suppression or monitoring as rain and wind were expected.
* Started deconning damaged haul truck.
* Discussed revised plan for Excavation Area 2 shoring layout with RPM, ODEQ, ERRS, START and Parametrix and ordered four 8’x20’x8’ trench boxes for delivery tomorrow.
Tuesday 10/13/09
Cold
On-site today: OSC Parker, 12 ERRS. Safety Meeting at 7 am.
Excavation:
* Finished excavating and installing shoring in Excavation Area 1/Shore System 6/Bay2.
* Received four 8’x8’x20’ trench boxes.
* Started excavating 20 foot wide x 10 foot deep bench and ramp for haul trucks in Excavation Area 2.
* Cleaned and demobbed part of one slide rail shoring system.
Containment Cells:
* Moved soil from containment cells 3 through 7 and 10 through 14 to the larger stockpile of subtitle D soil
* Continued stock piling contaminated soil for subtitle D disposal and covered pile with sheet plastic.
Water Treatment System:
* Continued filling dirty tanks 1 through 4 from excavation.
* Continued to treat water from 1 through 4 and pump into clean tanks 6 through 9.
* Discovered small leak from clean tanks due to valve not completely closed. Rusty water from the tanks leaked to soil surface near discharge meter.
Other work:
* PID calibrated and used in dirty Excavator and miniexcavator.
* No dust suppression or monitoring as rain and wind were expected.
* Site tour for Removal Manager Chris Field and Calvin Terada.
* Demobed damaged haul truck and received replacement truck.
Wednesday 10/14/09
On-site today: OSC Parker, RPM Ader, 1 START, 12 ERRS. Safety Meeting at 7 am.
Excavation:
*Started excavation of eight foot wide, twenty five foot deep trench in Excavation Area 2 at TP17, the far eastern edge, moving westward. Created a ramp for trucks to enter the excavation for loading out soil.
* Calculated backfill proportions for a 0.8% to 1% Daramend wall and started backfilling the Excavation Area 2 trench in twenty linear foot sections with pea gravel, sand and three inch minus rock.
*Finished deconning and demobing one slide rail shoring system.
Containment Cells:
* Continued to stock pile contaminated soil for subtitle D disposal and cover pile with plastic.
* Finished moving soil from containment cells 3 through 7 and 10 through 14 to the larger stockpile of subtitle D soil and removed the rock and liners.
*Sampled the floors of cleared out containment cells 3 through 7 and 10 through 14 and sent the ten samples to F&B lab.
*Covered soil in remaining containment cells and stockpile with sheet plastic and sandbags to shed rain.
Water Treatment System:
* Set up Excavation Area 2 pump to send ground water into Excavation Area 1 shoring system 6.
* Continued filling dirty tanks 1 through 4 from Excavation Areas 1 and 2.
* Treated dirty water and filled clean tanks 6 through 9.
Other work:
* No dust suppression or monitoring as rain and wind were expected.
Thursday 10/15/09
On-site today: OSC Parker, 1 START, 12 ERRS, 1 Parametrix. Safety Meeting at 7 am.
Excavation:
* Continued to excavate and back fill with amended soil the eight foot wide, twenty five foot deep trench in Excavation Area 2, moving westward.
Containment Cells:
* Continued to stock pile contaminated soil for subtitle D disposal and cover pile with plastic.
Water Treatment System:
* Continued filling dirty tanks 1 through 4 from both excavations and treated water to clean tanks 6 through 9.
* Discharged tanks 10 through 13 to POTW sewer intake.
* Collected water samples from intermediate filter, clean (tanks 6-9), and dirty tanks and sent to F&G lab.
Other work:
* No dust suppression or monitoring as rain and wind were expected.
* OSC Parker gave a site tour to Art Arroyo, Army National Guard project manager of a large Camp Withycombe construction job across Mather Road from the site.
* Parametrix measured the water levels at wells north and south of excavation area 1 and diagramed the current water depths to determine the effect pumping groundwater out of Excavation area 1 has had on the water table.
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