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Northwest Pipe and Casing

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Northwest Pipe and Casing site prior to start of test pit excavations.<br />Date Taken: 8/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Excavating test pit<br />Date Taken: 8/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Digging test pit<br />Date Taken: 8/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Pipe from previous site buildings found in a test pit.<br />Date Taken: 8/13/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Clearing support area for second office trailer.<br />Date Taken: 9/1/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Second office trailer placed on site.<br />Date Taken: 9/3/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Dry wheel wash between contaminated area and support zone. <br />Date Taken: 9/8/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Removal of two foot soil cap from Excavation Area #1.<br />Date Taken: 9/3/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Stockpile of clean soil cap from Excavation Area #1.<br />Date Taken: 9/3/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
base of containment cells<br />Date Taken: 9/4/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
lining containment cells<br />Date Taken: 9/10/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Creating containment cells - 18 inches deep in clean cap with higher sides berms for containment of contamianted soil. Lined with reinforced sheet plastic, geofabric and gravel.<br />Date Taken: 9/8/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
starting to remove overburden from excavation area 1<br />Date Taken: 9/10/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Starting excavation of first shoring bay; Dataram for fugitive dust detection in foreground.<br />Date Taken: 9/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Installing slide shoring in bay 1. <br />Date Taken: 9/14/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
On-Site Groundwater Treatment System<br />Date Taken: 9/10/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Water treatment system<br />Date Taken: 9/28/2008<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Groundwater treatment system components: pump, sand filters, bag filters, controller<br />Date Taken: 9/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Filling Carbon Filters of Water Treatment system with Granular Activated Carbon (GAC).<br />Date Taken: 9/10/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Discharge line to water treatement system under site road to pump next to excavation bay 1.<br />Date Taken: 9/12/2009<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:

Northwest Pipe and Casing site prior to start of test pit excavations. Excavating test pit Digging test pit Pipe from previous site buildings found in a test pit. Clearing support area for second office trailer. Second office trailer placed on site. Dry wheel wash between contaminated area and support zone. Removal of two foot soil cap from Excavation Area #1. Stockpile of clean soil cap from Excavation Area #1. base of containment cells lining containment cells Creating containment cells - 18 inches deep in clean cap with higher sides berms for containment of contamianted soil. Lined with reinforced sheet plastic, geofabric and gravel. starting to remove overburden from excavation area 1 Starting excavation of first shoring bay; Dataram for fugitive dust detection in foreground. Installing slide shoring in bay 1. On-Site Groundwater Treatment System Water treatment system Groundwater treatment system components: pump, sand filters, bag filters, controller Filling Carbon Filters of Water Treatment system with Granular Activated Carbon (GAC). Discharge line to water treatement system under site road to pump next to excavation bay 1. Groundwater intake hose end Placing treated groundwater discharge Water treatment system filters and treated water tanks Treatment system crew orientation Excavation area 1 Area1/Shore Sytem1/Bay1, high perspective Excavation Area1/Shore Sytem1/Bays 1 and 2, high perspective 4 one-ton bags of Chitin Label on chitin - Watering sand/chitin backfill in 1/1 Watering sand/chitin backfill in Excavation area1 /Shore system 1 1/1 backfilled with sand and chitin Excavating Excavation Area 1/ Shore System 1/ Bay2 Covered stockpile of contaminated soil between load outs Covering containment cell soil prior to anticipated rain Skidsteer operator climbing out of 1/1 Scaffolding around 1/1 and 1/2 oily floor of 1/2 black oil on floor of 1/2 Removing shoring posts from 1/1 and moving to 1/3 View from the north of Excavation area 1 as crew starts installing shore system 3. Oregon Iron Works two-foot gravel bed for laydown yard at north edge of excavation areas. 1/1 backfilled and shore system partially removed. Water treatment system in background. Backfill material from left to right: sand (dark because it is wet), three inch minus rock, pea gravel. black oil on floor of 1/2 sump pump hose into 1/2 Removing supports from 1/1 Removing supports from 1/1 Attaching hook and cable to post in 1/1 prior to removal Backfilling 1/1 with sand black oil in 1/2 Treated water discharge line Road Crossing on Mather Road. Treated water discharge into sewer intake on Mather Road Pipe buried in ground at 2 1/2 feet between test pit 14 and test pit 24 Trench of coal tar contamination between test pit 14 and test pit 24. Excavation Area 2 with 2 foot cap removed and trench of coal tar contamination running southward. Pipes in coal tar trench, crushed for disposal. Adding Chitin to Excavation Area1/Shore System 4/Bay 1 Installing shoring panel in excavation area 1, shore system 6, bay 1. Sheen on ground water in excavation area 1, shore system 5 Positioning shoring panel in excavatin area 1, shoring system 6, bay 1. Full excavation view, installing panel in 1/6/1 Close up of three excavators positioning panel in 1/6/1. Broken axle on Backfill and iron amendment in excavation area 1, shore system 5 North edge of shoring for excavation area 1, shore system 6. MW207 under green bucket. Daramend Iron soil amendment label on 1 ton bag. Containment cell soil piles covered for the weekend in anticipation of rain. Excavation Area 2, 3-4 feet of soil removed on east end. Excavation area 2 east edge showing soil layers. Oregon Irons Works new laydown yard Site photo showing proximity of Oregon Iron Work laydown yard, excavation area 1 in foreground, excavation area 2 in background. Clean water treatment tanks and carbon filters Water treatment system pump and filters. New water treatment system water discharge meter Conduit found at south edge of excavation area 2, near TP23. Covering large stockpile of excavated soil with sheet plastic and sand bags. Start of large stockpile of excavated soil 6 feet bgs soil removal at Excavation Area 2. 6 foot bgs soil removal at Excavation Area 2, looking northeast. Dry Write Board preliminary conceptual plan for deep excavation in Excavation Area 2, (long black parallel lines) on proposed rail spur. Loading out and transportation of stockpiled soil Re-dressing, clean up of base of stockpiled soil area Confirmation sampling of cap beneath stockpiled soil area Roughed-in, Semi-permeable cap over Excavation Area #1 Monitoring Location ML-2 located NW of Soil Stockpile. Excavator loading the first truck and trailer. Monitoring Location ML-3 located East of Soil Stockpile. Monitoring Location ML-1 at Command Post. Trucks lined up to be loaded. Amout of Stockpile that was removed by the first 18 truck loads. Soil stockpile partly removed showing top liner profile.