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ENVR 1402 Lab
Lab 8 – Environmental Remediation Exercise - 1
Lab 8 – Acme Battery Recycler Facility Cleanup
Environmental Remediation of a Battery Recycling Facility in
Guacamole Heights, TX with Lead-Contaminated Soils
INTRODUCTION
Acme Battery Recyclers moved into town, promising to give Guacamole Heights new jobs and a “green” community partner. The relationship between the battery recycler and the City started off pretty well - the batteries kept rolling in and they were able to keep up with the dismantling and recycling of the various battery components. Then, things started going a little south. Acme had some labor problems which resulted in them being short-handed. The incoming stream of batteries started piling up. Eventually, to move the batteries through the process as fast as possible, they would bust open the batteries and wash out the liquid contents into a floor drain that led to a sewer line headed to the Guacamole Heights WWTP.
It “hit the fan” when an investigation found that Acme was the cause of the City of Guacamole Heights being fined for polluting Guacamole Creek and negatively impacting the Creek’s biological communities. The result was that the City of Guacamole Heights shut down the Acme Battery Recycling facility, and an environmental company was brought in to clean things up.
During this exercise, you will orchestrate the environmental cleanup of an industrial facility from the perspective of an environmental consultant. Ultimately, you will submit a report to Acme Battery Recyclers for the cleanup that includes all your diagrams, sampling data and costs incurred. Acme will then be able to use this report to demonstrate that they have cleaned up the site.
OBJECTIVES
Construct site diagrams of a battery recycler industrial facility with lead-contaminated soils.
Design a grid on the battery staging pad diagrams which simulate a sampling strategy to delineate the extent of the lead contamination.
Receive lab analyses and post sample analyses back to the sampling grids to determine where excavation of lead-contaminated soils is required.
Excavate/sample (receive analyses)/further excavation until site(s) are determined clean (all grid squares non-detect for lead)
Dispose of contaminated soils into a landfill by calculating soil volumes, dump truck volume capacities, convert volume to tonnage, replace excavated soils with clean backfill – calculating all costs incurred.
Submit an Environmental Report that includes all facility diagrams, sampling data, excavation/disposal/clean backfill data, and costs incurred to complete the remediation effort.
PROCEDURE
1.
Go to Module 8, find your name in the Student Group Assignment link
. That will correspond to the lab analyses data
you will use to complete this assignment – you will find the data in the Lab Analyses
and Results link (corresponding to your Group) at the bottom of Module 8
2.
Construct the diagrams (Appendices A, B and C).
ENVR 1402 Lab
Lab 8 – Environmental Remediation Exercise - 2
Lab 8 – Acme Battery Recycler Facility Cleanup
The Total Facility diagram (Appendix A
). The Warehouse building itself is 120’ by 48’
There are two areas
of definite soil contamination from the stockpiling of the leaking batteries:
A.
At the Railroad Spur
, batteries were offload from rail cars on a 20’ x 40’ pad (Appendix B
).
B.
Next to the warehouse
, there is a 100’ x 60’ pad where the batteries were staged before entering the warehouse to be dismantled (Appendix C
). C.
You will want to recreate these diagrams
exactly
as you see them (in the PowerPoint file)!!
3.
Design a sampling grid for each (2) of the battery staging pads
. You must first delineate the extent of the lead contamination
. See the instructions for this in the PowerPoint file.
A.
You will collect a soil sample from the center of each of the squares in the grid
. B.
You will obtain sample results
from this sampling event from Canvas. Go to the Sample Analyses and Results page in the module and access a pdf file called
sample analyses – first event. The PowerPoint file will show you what the lab analyses look like.
C.
Once you get your lab analyses, post the values in the grid squares
. Write small and towards the top of the grid square – you might have to write 3 values in some of the squares.
4.
You will need to dig down one (1) foot in those areas that have values
(that are not
non-detect - ND
).
Be mindful that you will need to keep track of the volume of soil you remove.
Shade in (with a highlighter or colored pencil) the area of grid squares where the initial contamination occurred (that you removed with this “first dig
”). 5.
After digging down one foot in those areas with values
, you will need to
obtain a second sample (only from those that had values). This is to see if your digging actually removed all of the lead contamination.
A.
You will obtain a second set of sample results
from this sampling event. Go to the Sample Analyses and Results page in the module and access a pdf file called
sample analyses – second event.
B.
Once you get your lab analyses for this second event, post the values in the grid squares
.
C.
After digging down another foot in those areas with values – from the “second dig”
, you will need to
obtain a third sample (only from those that had values). D.
Go to the Sample Analyses and Results page in the module and access a pdf file called
sample analyses – third event. E.
Once you get your lab analyses for this third event, post the values in the grid squares
. Every grid square should be ND at this point – the site is clean!!
F.
Shade in (with a highlighter or colored pencil) the area of grid squares where the second
level of lead contamination occurred (that you removed with this “second dig
”).
6.
After all your sample analyses come back ND (non-detect) for lead, you have proof that both pad sites have been remediated
.
7.
With a colored pencil or highlighter
, make sure you have shaded in each of the “digs” identified for the RR Spur pad (2), and for the Warehouse pad (2 digs for each of the two “pieces”). 8.
Now you have to:
A.
Calculate the total volume of soil removed.
The RR Spur Pad had one area
with contamination. Since the first dig didn’t completely clean up the site (all ND), a second dig was required to get
ENVR 1402 Lab
Lab 8 – Environmental Remediation Exercise - 3
Lab 8 – Acme Battery Recycler Facility Cleanup
that area completely remediated. The Warehouse Pad was split into two areas
(A and B) of contamination (after the first analyses). It also required two digs to get to total ND.
You need to calculate the volume of soil removed from each site (2 digs)
: 1.
There are six portions
: RR Spur (1), RR Spur (2), Warehouse (1A), Warehouse (1B), Warehouse (2A), and Warehouse (2B). Note: Using the grids and scales of your diagram, calculate the volume (1 foot deep!) for each of the 6 portions. Put all your calculations on the Environmental report – in the provided box. Here’s an example
– RR Spur 1 (first dig)(scale: 1 box= 1 foot
) 36 boxes x 15 boxes x 1’ deep = 36’ x 15’
x 1’ = 540 feet
3
(
for the RR Spur Pad, boxes = feet
since the scale is 1 box=
1 foot
)
Here’s another example
– Warehouse 1B (first dig)(scale: 1 box= 3 feet
) 15 boxes x 13.33 boxes x 1’ deep = 45’ x 40’
x 1’ = 1800 feet
3
(
for the Warehouse Pad, you have to use the scale 1 box=
3 feet
)
2.
For the six portions
, you will end up with a total of cubic feet
(feet
3
). All the calculations in your Environmental Report are in cubic yards
(yards
3
). To convert your feet
3
to yards
3
, divide by 27
(1 yard
3
= 27 feet
3
)
. Total feet
3
/
27
= Total yards
3
3.
Once you get the total yards
3
, the backhoe operator can remove 25 yards
3
/hour
. He charges $80/hour
. What is the total cost for backhoe services? Hint:
you can figure out his
hours by taking the total yards
3
and dividing
by how many yards he can remove in an hour
.
B.
Dispose of the contaminated soils.
You can take the lead-contaminated soils to the City of Guacamole Heights landfill.
1.
Your trucking company has a 15 yard
3
-capacity truck
. How many trips will he need to make? Each round-trip takes 2 hours
to get from Acme Battery Recyclers to the landfill and back. Keep in mind if there’s a fraction of a truckload, he still has to make a full trip to the landfill – round up even if it’s less than 0.5 truckloads!). Trucking costs to the landfill are $90/hour. What are the total trucking costs? Hint:
you can figure out how many trips he must make by taking the total yards
3
and dividing
by how many yards his truck can hold
.
2.
The landfill
charges by the ton, not
the yards
3
. To convert yards
3
to tons, divide by 0.8
(1 ton = 0.8 yards
3
)
. The landfill charges $45/ton
to dispose of waste into their landfill. Total yards
3
/
0.8
= Total tons
C.
Fill in the excavated pad areas with clean backfill
You can get clean backfill for $25/yd
3
, which includes
trucking fees.
D.
Submit your environmental report to Acme Battery Recyclers
9.
Your Environmental Report
includes:
A.
Facility diagrams
B.
Sampling strategy (your grid
)
C.
Sample results (posted on your sampling grid) to show that the site is clean and the contaminated soil has been disposed of properly.
D.
All costs incurred. Here’s the cost categories you need to have in your report (see the lab exercise for costs):
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