Program Management
Presentations
Post-Fire Environmental Sampling Data
Post-Fire Accelerated Actions
|
ER Project Post-Cerro Grande Fire Accelerated Actions |
Post-Fire Accelerated Actions at Floodplain Sites
- Assessment of Floodplain Sites
- Fire Affected Canyons
- Map of Pajarito Plateau Watersheds
- Table of Floodplain Sites
Post-Fire Accelerated Actions at Fire-Related Sites
- Information coming soon!
Assessment of Floodplain Sites
The Environmental Restoration (ER) Project assessed potential release sites (PRSs) located in the Los Alamos National Laboratory (the Laboratory) watershed floodplains subsequent to the Cerro Grande fire. Seventy-seven potential release sites (PRSs) ("affected sites") were identified for evaluation in the most fire-damaged watersheds (the Pajarito, Pueblo, Los Alamos, Water, and Cañon de Valle watersheds). Five affected sites are the canyons themselves; the remaining 72 affected sites are located within the floodplains of the Pajarito and Los Alamos watersheds. These 72 sites are at Technical Areas (TAs) 2 and 41 in Los Alamos Canyon, and TAs-27 and -18, in Pajarito Canyon.
The 77 affected sites were assessed to determine the accelerated actions appropriate for each site, in response to potential flood threats. The assessment strategy has been documented in the Task Plan for Floodplain Potential Release Site Assessments. An accelerated action is action taken at a site ahead of the ER Project prioritized, planned schedule. Accelerated actions may include removal, protection, hardening, installation of best management practices, or collection of characterization data. Accelerated action may or may not be a final remedy for the site.
The results of the evaluation process for the 72 PRSs and the status of accelerated actions are documented in a Cerro Grande accelerated action PRS status sheet. The status sheets are updated as necessary as sites undergo evaluation and as accelerated actions are implemented. The results of the evaluation of the five affected canyons have also been documented.
The ER Project has analyzed environmental samples at some affected sites for a range of metals, radionuclides, and organic chemicals. Data summary tables will be provided that compare these analytical results with available Laboratory-specific background values and risk screening levels appropriate to each environmental medium.
Map of Pajarito Plateau Watersheds
. 
Under Construction! PRS Status Sheets are currently being
linked!
|
Count
|
Potential Release Site Number
|
Potential Release Site Name
|
Hazardous & Solid Waste Amendments Unit?
|
Floodplain
|
|
1
|
Sediment Traps in Mortandad Canyon |
Yes
|
Mortandad
|
|
|
2
|
Reactor facility |
No
|
Los Alamos
|
|
|
3
|
Reactor facility |
No
|
Los Alamos
|
|
|
4
|
Reactor facility |
No
|
Los Alamos
|
|
|
5
|
Reactor facility |
No
|
Los Alamos
|
|
|
6
|
Holding tank (near reactor water boiler) |
No
|
Los Alamos
|
|
|
7
|
Reactor facility |
No
|
Los Alamos
|
|
|
8
|
Reactor facility effluent storage tank TA-2-54 |
No
|
Los Alamos
|
|
|
9
|
Reactor facility effluent storage tank TA-2-55 |
No
|
Los Alamos
|
|
|
10
|
Reactor facility effluent storage tank TA-2-56 |
No
|
Los Alamos
|
|
|
11
|
Reactor facility acid pit TA-2-53 |
No
|
Los Alamos
|
|
|
12
|
Reactor facility equipment building TA-2-44 |
No
|
Los Alamos
|
|
|
13
|
Aboveground tank, former |
No
|
Los Alamos
|
|
|
14
|
Systematic leak, cooling tower blowdown |
Yes
|
Los Alamos
|
|
|
15
|
Industrial or sanitary waste water treatment |
Yes
|
Los Alamos
|
|
|
16
|
Industrial or sanitary waste water treatment |
Yes
|
Los Alamos
|
|
|
17
|
Waste line |
No
|
Los Alamos
|
|
|
18
|
Waste line |
No
|
Los Alamos
|
|
|
19
|
Waste line |
No
|
Los Alamos
|
|
|
20
|
Septic system, former |
Yes
|
Los Alamos
|
|
|
21
|
Outfall |
Yes
|
Los Alamos
|
|
|
22
|
Outfall |
No
|
Los Alamos
|
|
|
23
|
Non-intentional release |
Yes
|
Los Alamos
|
|
|
24
|
Non-intentional release |
Yes
|
Los Alamos
|
|
|
25
|
Non-intentional release |
Yes
|
Los Alamos
|
|
|
26
|
Non-intentional release |
No
|
Los Alamos
|
|
|
27
|
Reactor facility |
No
|
Los Alamos
|
|
|
28
|
Building, former TA-2-3 |
No
|
Los Alamos
|
|
|
29
|
Storm drain and outfall |
No
|
Los Alamos
|
|
|
30
|
Storm drain and outfall |
No
|
Los Alamos
|
|
|
31
|
Storm drain and outfall |
No
|
Los Alamos
|
|
|
32
|
Storm drain and outfall |
No
|
Los Alamos
|
|
|
33
|
Storm drain and outfall |
No
|
Los Alamos
|
|
|
34
|
Underground tanks, former TA 2-29 and former 2-67 |
No
|
Los Alamos
|
|
|
35
|
Metal nugget pile |
No
|
Los Alamos
|
|
|
36
|
Lagoon |
Yes
|
Pajarito
|
|
|
37
|
Sewer lines |
Yes
|
Pajarito
|
|
|
38
|
Sump |
Yes
|
Pajarito
|
|
|
39
|
Firing site (abandoned) |
Yes
|
Pajarito
|
|
|
40
|
Firing site (abandoned) |
Yes
|
Pajarito
|
|
|
41
|
Drop tower |
No
|
Pajarito
|
|
|
42
|
Settling pit |
Yes
|
Pajarito
|
|
|
43
|
Septic system |
Yes
|
Pajarito
|
|
|
44
|
Septic system |
Yes
|
Pajarito
|
|
|
45
|
Septic system |
Yes
|
Pajarito
|
|
|
46
|
Septic system |
Yes
|
Pajarito
|
|
|
47
|
Septic system |
Yes
|
Pajarito
|
|
|
48
|
Septic system |
Yes
|
Pajarito
|
|
|
49
|
Septic system |
Yes
|
Pajarito
|
|
|
50
|
Waste lines containment |
Yes
|
Pajarito
|
|
|
51
|
Pit |
Yes
|
Pajarito
|
|
|
52
|
Storage area |
Yes
|
Pajarito
|
|
|
53
|
Transformer |
No
|
Pajarito
|
|
|
54
|
Outfall |
No
|
Pajarito
|
|
|
55
|
Outfall |
No
|
Pajarito
|
|
|
56
|
Outfall |
No
|
Pajarito
|
|
|
57
|
Outfall |
No
|
Pajarito
|
|
|
58
|
Outfall |
No
|
Pajarito
|
|
|
59
|
Soil containment |
No
|
Pajarito
|
|
|
60
|
Outfall |
Yes
|
Pajarito
|
|
|
61
|
Outfall |
Yes
|
Pajarito
|
|
|
62
|
Sump and drain lines |
No
|
Pajarito
|
|
|
63
|
Waste tank |
No
|
Pajarito
|
|
|
64
|
Storage area |
No
|
Pajarito
|
|
|
65
|
Firing sites (abandoned) |
Yes
|
Pajarito
|
|
|
66
|
Septic system |
Yes
|
Los Alamos
|
|
|
67
|
Waste water treatment facility |
Yes
|
Los Alamos
|
|
|
68
|
Waste water treatment facility |
Yes
|
Los Alamos
|
|
|
69
|
Waste water treatment facility |
Yes
|
Los Alamos
|
|
|
70
|
Sump |
No
|
Los Alamos
|
|
|
71
|
Storm drains |
No
|
Los Alamos
|
Fire Affected Canyons
|
72
|
C-00-005
|
Pueblo Canyon |
No
|
Pueblo
|
|
73
|
C-00-006
|
Los Alamos Canyon |
No
|
Los Alamos
|
|
74
|
C-00-008
|
Mortandad Canyon |
No
|
Mortandad
|
|
75
|
C-00-011
|
Pajarito Canyon |
No
|
Pajarito
|
|
76
|
C-00-014
|
Caņon de Valle |
No
|
Valle
|
|
77
|
C-00-016
|
Water Canyon |
No
|
Water
|
Environmental Management Division
L O S A L A M O S N A T I O N A L L A B O R A T O R Y
Operated by the University of California
Inside LANL - ER Web Master - Copyright © UC 1998 - Disclaimer