mortandad canyon sediment trap maintenance alamos national labs/general/14422.pdf24 tr

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Page 1: MORTANDAD CANYON SEDIMENT TRAP MAINTENANCE Alamos National Labs/General/14422.pdf24 Tr

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MORTANDAD CANYON

SEDIMENT TRAP MAINTENANCE

Fi"nal Closeout Report

October 3, 2000

I III/IIIII/I IIIII IIIII IIIII 11111111 14422

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Receivad by ER·RP~>:

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Page 2: MORTANDAD CANYON SEDIMENT TRAP MAINTENANCE Alamos National Labs/General/14422.pdf24 Tr

INTROO:JCTION

Malntananco of sadlmont traps locatod In Mortandad Canyon was perlormod by Facllltlos Wasta Operations - Waste Facilities Management. The work was performed as part of the post Cerro Grande Flro Rocovery Work. The objective of the maintenance was to lncroaso tho available volume of sodlmont traps lt1 and lt3 and to removo radiologically contaminated sodlmants from a prior maintenance event,

· which wore stockpiled adjacont to sediment trap 111. Figure 1 shows the location or tho sediment traps In Mortandad Canyon. ·

1.0 SCOPE OF WORK

The original scope of work datod June 27, 2000 listod the following activities:

Croate a Site Spocflic Health and Safety Plan (SSHASP),

Excavate approximately 1250 cubic yards of soli and sodlmont from Mortandad Canyon (roach M-4, at the sediment traps),

. toad thl~ matorlal into medium sized dump trucks (1 0 to 12 cubic ynrd capacity) and haul thi:; material to · · TA·54.for disposal,

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Stabilize (contour/revogotate), and construct erosion protoctlon for thO excavated sitos,

Wrlto a short roport documenting what was done.

An additional 1 000 cubic yords of soil woro added to the original scopo during axcnvatlon activities.

2.0 FIELD ACTIVITIES

Prior to mobilization to tho flold, flold preparation activities wore conductod. Theso fiold preparation activities lncludod n slto walkover, preparation of a SSHASP by Morrison Knudsen Corporation (MK), MK subcontract procurement or Koors Envlronmontal tor excavation and hauling nctivltlos, Roadlnoss Aoview preparation and mooting, and Emergency Management and Rosponse (EM&R) coordinotion.

2.1 Mobilization

Mobilization of equipment and porsonnol took place on July 25, 2000. MK provided safety equipment and miscellaneous llotd supp!los. Envlronmontal Safety and Hoalth (ESH) ·1 mobilized three Radiation Control Technicians (ACTs) and nococsary Instruments for radiation surveys and screening or equipment and porsonnel. Koors mobilized one trnck hoe, six 12 cubic yord dump trucks, one front ond loader, two 2000·gallon water trucks, one bobcat, and one support truck.

Mobilization and site setup wore lnltlatod on July 25, 2000. At that time, support zone supplies woro staged at the site and a slto walk performed. The track hoe exco.vator was also mobilized to the site. Following establishment of work zones and radiation zonos In tho morning by ESH·, ACTs excavation actlvltlos ware ready to bogln on July 26, 2000 •

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(] Gagi'lgsta!ion

~road ~ Figure 1

locations of sediment traps In Mortandad Canyon.

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Cootdina!es a:t t.'USP NA083 CC1n!Dur Herval = 10 Jl

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2.2 Soli Excnvatlon and Olsposol

2.2.1 Materials Handling

All oxcavotad matorlols woro dlsposod of at TA-54, Aroa G. Dump trucks wore lined with 4·mll pla~tlc sheeting prior to loading tho oxcavatod soil. Soils woro oxe<:~vatod from oach ora<:~ using a track hoe oxcavntor to stockpile soils o.nd a front·ond loader to load the dump trucks.

Once filled, oach truckloild of soil was burrito-wrap pod with tho oxcoss plastic lin or. All seams of tho plnstic liner wore soalod with duct tapa and tho box of tho truck was covered with n plastic tarp and tied· down. Each truck was thon swiped and survoyod by ESH·1 ACTs and the shipment approvod tor roleaso from the slto. GTS Ouratok prepared all manlfosts, was to disposal and shipping forms and inspoctod ooch truck boforo transport to TA·54 for final disposal.

For health and safety purposos, w<:~tor was sprayed whilo excavating soils 1or dust supprosslon. Wator was also appllod to tho canyon road looding to tho slto for dust suppression while trucks wero exiting and ontorlng tho canyon. Throughout tho project nlno:y·flvo 2000·gallon trucklonds of wator woro usod tor a total of opproxlmatoly 190,000 gallon~ ot wator. At no tlmo was tho water allowod to causo runoff from tM slto or allowed to pond.

AI TA·54, oach waste shlpmont wos rocolvod and the truckload dumpod In Aroil G. Tho ACTs at TA·54 ~urvoyod the truck~ tor roloaso back to tho sito. Tho average trip tlmo from tho excavntlon slto to TA·S4 and back was approximately 2 hours.

2.2.2 Excnvntlon of Solis

Excavation of sodlmont trap 111 was conducted from July 26 to July 28, 2000. Soils wore excavatod with the track hoe excavator, stockpiled and transferred to tho dump trucks using the front·ond lo.ldor. A total o132 truckloads (·384 cubic yards) of soil from sodimont trap 111 woro oxcnvatod, transported, and dlsposod of at TA·54, Area G.

Excavation of tho soil pilos north and adjaeont to sediment trop n1 was conducted from July 31 to August 8, 2000. Approximately 1 09 truckloads ( .. 1308 cubic yards) o! solltrom tho pllos wora oxcavatod: transported, and dlsposoc! of nt TA·54. Aroa G.

Excavation of sodimont trap 113 was conducted from August 8 to August 11. 2000. A total ot 42 truckloads (·504 cubic yards) of soil from sodlmont trap 113 woro excavated, transported, and disposod of at TA·54, Aroa G. A summary of oxcovatlon nctlvlty is provided in Appendix A and photogmphs or slto activities are provldod in Appendix B.

3.0 SITE STABILIZATION ANO RESTORATION

Stockpiled surface soils. gonoratod during tho truck turnaround/staging area construction, were spread out over thO sera pod arons and fallon treos woro placed in their original locations.

Final sito stabilization <tnd re~toratlon wiH ba conducted by FWO·DO during tho LANL·wldo tiro rotatod site restorations.

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4.0 CEMOSILIZATION

Oomobillzatlon from tho work sllo was performed on August 14, 2000. All equlpmont was survoyod and troo roloasod by ESH·1. GTS Ouratok arrongod for transportation of a dumpstor containing PPE from field oetlvltlos to TA·54 for disposal.

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---------------------------

APPENDIX A

Summary of Excavation Activity

LOAD I AREA I DATE I DATE I VOLUME I CUMULATIVE NUMBER EXCAVATED l.OADED OUMPEO FROM AREA I VOLUME REMOVED

1 Tr:~p1 I July 261 2000 I July 261 2000 12 I 12

2 Tr~p1 I July 261 2000 July 261 2000 24 24

3 Tr~p1 I July 261 2000 I July 261 2000 36 36 4 Tr~p1 July 261 2000 July 261 2000 48 48

5 I Trap1 July 271 2000 July 271 2000 60 GO 6 TrDp1 I July 271 2000 July 271 2000 72 72

7 Trap1 I July 27, 2000 I July 271 2000 84 84 8 TrDp1 I July 271 2000 I July 271 2000 96 96 9 Tr:~p1 July 271 2000 I July 27, 2000 108 108

10 Tr<~p1 I July 271 2000 I July 27. 2000 120 120 11 TrDp1 I July 271 2000 I July 271 2000 132 132

12 Trap1 July 271 2000 July 271 2000 144 144

13 I Tr:~p1 July 271 2000 July 271 2000 156 156

14 Trap1 July 27, 2000 I July 271 2000 168 168 15 Trap1 July 271 2000 July 271 2000 180 180

16 Tr:~p1 I July 271 2000 July 27 I 2000 192 192 17 I Trap1 I July 271 2000 I July 271 2000 204 204 18 j Tr:~p1 I July 271 2000 I July 271 2000 216 216

19 I Trap1 July 271 2000 I July 271 2000 228 228

20 Tr<~p1 July 2.7, 2000 I July 271 2000 240 240

21 I Tr<~p1 I July 281 2000 I July 28~ 2000 252 252

22 Trap1 I July 281 2000 I July 281 2000 264 264

23 Tr<~p1 I July 281 2000 I July 281 2000 276 276

24 Tr<~p1 July 281 2000 I July 281 2000 288 288

25 Trop1 I July 28, 2000 July 28~ 2000 300 300

26 Tr<~p1 I July 281 2000 I July 28, 2000 312 312

27 Trnp'1 I July 281 2000 I July 28. 2000 324 324

28 Trap1 July 281 2000 I July 28, 2000 I 336 336

29 Trap1 July 28, 2000 I July 28. 2000 I 346 348

30 Trap1 July 281 2000 July 281 2000 360 360

31 Trap1 July 281 2000 July 281 2000 372 372

32 Trap1 I July 28, 2000 I July 28, 2000 384 384

33 Soli Pltos July 311 2000 July 31 , 2000 12 396

34 Soli Pllos July 31 I 2000 I July 311 2000 I 24 408

35 Soli Pllos July 311 2000 July 31. 2000 36 420

3G Soli Pllos July 31, 2000 July 31 , 2000 48 432

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---- ---~ ------ -------------------.

LOAD I AREA I DATE I

DATE I VOLUME I CUMULATIVE NUMBER EXCAVATED LOADED DUMP EO FROM AREA VOLUME REMOVED

37 Soil Pllos I July 31,2000 I July 31, 2000 60 444 38 Soli Pllos July 31, 2000 I July 31, 2000 72 456 39 Soil Pllos July 31, 2000 I July 31, 2000 64 4G8 40 Soli Pllos July 31, 2000 July 31, 2000 96 ~so

41 Soli Piles I July31,2000 July 31, 2000 108 492 42 Soli Pllos July 31, 2000 July 31, 2000 120 504 43 Soli Pllos July 31, 2000 August1,2000 132 516 44 Soli Pllos July 31, 2000 I August 1. 2000 144 528 45 Soil Pllos August1,2000 August1.2000 156 540 46 Soil Pllos August 1, 2000 I August 1 , 2000 168 552 47 Soli Pllos August 1, 2000 I August 1. 2000 180 564 48 Soli Pllos August 1,2000 I August1,2000 ,92 576 49 Soli Pilos August 1, 2000 I August 1. 2000 204 588 50 Soil Pllos August1,2000 I AuQust1.2000 2~6 600 51 Soli Pllos August 1. 2000 I August 1. 2000 228 612 52 Soli Pllos AUQUSt1,2000 AuQust1.2000 240 624 53 Soil Pllos August 1,2000 I August1,2000 252 636 54 Soli Pllos August 1,2000 I August1,2000 264 648 55 Soli Pllos August1,2000 I August 1,2000 276 660 56 Soli Pilos August1,2000 I August1,2000 288 672 57 Soil Pllos August1,2000 August1,2000 300 684 58 Soli Pllos AuQust 1. 2000 I August 1, 2000 312 696 59 Soil Pllos August 1, 2000 I August 1, 2000 324 708 60 Soli Pllos August 1,2000 1 August1.2000 336 720 61 Soil Pllos August 1. 2000 I August 2, 2000 348 732 62 Soli Pllos I August1, 2000 I August 2, 2000 ~60 744 63 Soil Pllos August1,2000 I August2,2000 372 756 64 Soil Pilos August1,2000 August 2. 2000 I 384 766 65 Soil Pllos I August 1, 2000 I August 2, 2000 396 780 66 Soil Pllos I August 1. 2000 I August 2. 2000 I 408 792 67 Soli Pllos I August2. 2000 I August 2, 2000 420 804 68 Soil Pllos I August 2. 2000 I August 2, 2000 432 816 69 Soil Pllos I August 2. 2000 August 2. 2000 1 444 828 70 Soil Pllos August 2. 2000 I August 2. 2000 456 840 71 Soli Pllos August 2. 2000 I August 2, 2000 I 468 852 72 Soil Pllos August 2. 2000 1 August 2. 2000 480 864 73 Soli Piles August 2. 2000 I August 2, 2000 492 876 74 Soil Pllos August 2. 2000 I August 2, 2000 504 868 75 Soil Pllos August2,2000 August2.2000 516 900 76 Soli Pllos August 2, 2000 August 2, 2000 528 912 77 Soli Pllos August2.2000 August 2, 2000 I 540 924 78 Soli Pllos August2.2000 August2.2000 552 936

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.-------------------------------·--.

I.OAD I AREA I DATE I

DATE I VOI.UME I CUMUI.ATIVE NUMBER EXCAVATED LOADED DUMPED FROM AREA 1 VOl.UME REMOVED

79 Soli Pllos August2, 2000 August 3, 2000 I 564 I 948 80 Soil Pllos August2,2000 August3,2000 576 960 81 Soli Pllos August 2. 2000 August3,2000 588 972 82 Soli Plies August 2. 2000 August3,2000 600 I 984 .. 83 Soli Piles August2.2000 August3.2000 612 996 84 Soli Piles August 2, 2000 I August 3, 2000 624 1008 85 Soli Plies August 3, 2000 August3,2000 636 1020 SG Soli Pllos August3,2000 August3,2000 648 1032 87 Soil Piles August3,2000 August3,2000 660 1044

88 Soli Plies August 3, 2000 AuguGt3,2000 672 1056 89 Soil Pllos August3,2000 August3,2000 684 1068 90 Soli Plfos August3,2000 I August3,2000 696 1080 91 Sell Plies August3,2000 August3,2000 708 1092 92 Soil Pllos August 3, 2000 I August 3, 2000 720 , 104

93 Soli Pllos August 3, 2000 I August 3, 2000 I 732 1116 94 Soli Piles August3,2000 August 3, 2000 I 744 1128 95 Soli Pllos August3,2000 August3,2000 756 1140 9G Soli Pilos August3,2000 I August3, 2000 768 1152 97 Soil Piles August 3, 2000 I August 4, 2000 780 1164 98 Soli Piles August3.2000 I August4,2000 792 1176 99 Soil Pllos August 3, 2000 I August 4, 2000 804 1188

100 Soli Piles I August 3, 2000 I August 4, 2000 816 1200 101 Soil Pilos August 3, 2000 I August 4, 2000 I 828 1212 102 Soil Pllos August 3, 2000 I August 4, 2000 I 840 1224 '103 Soli Pllos I August 4, 2000 I August 4, 2000 1 852 1236 104 Soil Pllos I Ausust 4, 2000 1 Augus: ~. 2000 1 864 1248 105 Soil Pllos I August 4, 2000 I August 4, 2000 I 876 1260 106 Soli Plies I August 4, 2000 I August 4, 2000 1 888 1272 107 Soil Pllos I August 4, 2000 1 August 4, 2000 900 1284 108 Soli Pllos August 4, 2000 I August 4, 2000 I 912 1296 109 Soli Pilos I August 4, 2000 1 August 4, 2000 I 924 1308 110 I Soli Pllos August 4, 2000 I August 4, 2000 I 936 1320 111 I Soli Pllos I August4, 2000 August 4, 2000 I 948 1332 112 Soli Pllos I August 4. 2000 August4,2000 960 1344 113 Soli Pllos August 4, 2000 August4,2000 972 1356 114 Soli Pllos Au~ust 4, 2000 I August 4, 2000 984 1368 115 Soli Pllos August7.2000 August7,2000 996 1380 116 Soli Pllos August 7, 2000 August7.2000 1008 1392 117 Soil Pllos August 7, 2000 I August 7, 2000 102C 1404 118 Soli Pllos August 7. 2000 1 August 7, 2000 1032 I 1416 119 Soli Pllos I August 7. 2000 August7,2000 1044 1428 120 Soli Pllos August7.2000 August 7. 2000 1056 1440

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~OAO i AREA I DATE I DATE I VO~UME I CUMU~ATIVE NUMBER: EXCAVATED LOADED DUMPED FROM AREA VOL.UME REMOVED

121 I Soli Pilos I August 7, 2000 August7.2000 10G8 1452 122 Soli Pllos August7,2000 August7,2000 1080 14(54 123 Soli Pllos August7,2000 August7.~000 1092 1476 124 I Soli Pllos August 7, 2000 August7.2000 1104 1488 '

125 Soli Pllos August7,2000 August7,2000 1116 1500 126 ! Soli Pllos August7,2000 August7.2000 , 128 1512 127 I Soli Piles August 7, 2000 I August 7, 2000 1140 1524 128 I Soli Pllos August7,2000 August7,2000 1152 1536 129 I Soli Pllos August7,2000 I August7,2000 1164 1548 130 Soli Pllos August7,2000 I August7,2000 1176 1560 131 Soli Plies August7,2000 I August7,2000 1188 1572 132 Soli Pllos August7,2000 August7,2000 1200 1584 133 Soli Pllos August8,2000 I August8,2000 1212 1596 134 Soli Pllos August8,2000! August8,2000 1224 1608 135 Soli Pilos August8,2000 August 8, 2000 1 1236 1620 136 Soli Pllos August a, 2000 I August 8, 2000 1 1248 1632 137 Soli Pllos August8,2000 I August8.2000 1260 1644 138 Soli Pllos August8,2000 August8,2000 1272 1656 139 Soli Pllos August8,2000 I August8,2000 1284 1668 140 Soil Pllos August8,2000 August8,2000 12$6 1680 141 Soil Pllos I August 8, 2000 August8,2000 1308 1692 142 Trap 3 I August 8, 2000 August 8, 2000 I 12 1704 143 Tr01p 3 I August 8, 2000 August8,2000 24 1716 144 Tr:lp 3 I August 8, 2000 August8,2000 36 1728 145 Tr;~p 3 August8,2000 August8,2000 48 1740 146 I Tr:~p 3 August8,2000 August8,2000 60 1752 147 l Tr:~p 3 August8,2000 I August8,2000 72 1764 148 Trap3 August 9, 2000 August9,2000 84 1776 149 Tr:lp 3 August 9, 2000 I August 9, 2000 96 1788 150 Trap3 August9,2000 I August9,2000 108 1800 151 Trap 3 August9,2000 I August9,2000 120 1812 152 Trap 3 August9,2000 I August9,2000 132 1824 153 Trnp 3 August9,2000 August9,2000 144 1836 154 Tr:.1p 3 August9,2000 August9.2000 156 1848 155 Trap 3 August9,2000 August9.2000 168 1860 156 Trnp 3 August 9, 2000 I August 9, 2000 I 180 1872 157 Trap 3 August 9, 2000 1 August 9, 2000 I 192 1884 158 Tr:lp 3 August9,2000 August9,2000 204 1896 159 Trnp 3 August9,2000 August 9, 2000 I 216 1908 160 Tr:~p 3 August 10. 2000 I August 10. 2000 228 1920 161 Trap 3 August10,2000 August10,2000 240 1932 162 Tr:lp 3 Al.lgust10,2000 August 10, 2000 252 1944

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w--------------------------·

I.OAO I AREA I DATE I DATE I VOLUME I CUMULATIVE NUMBER EXCAVATED I.OADED DUMPED FROM AREA VOI.UME REMOVED

163 Trt:~p 3 August10,2000 August 1 o, 2000 I 264 1956 164 I Trt~p 3 I August 10, 2000 August 10, 2000 I 276 1968 165 Trap3 August 10, 2000 August10.2000 288 1960 166 Trap 3 August 10, 2000 August10,2000 300 1992

167 Trnp 3 August 10, 2000 August 10, 2000 312 2004

168 Trap3 August10,2000IAuQust10,2000 324 2016 169 Tr:ap 3 August 1 o. 2000 1 Aucust 1 o, 2000 336 20.28 170 Tro:~p 3 August 10.2000 I August 10,2000 348 2040 171 Trap3 August10,2000 August 10,2000 360 2052 172 Trap 3 August10.2000 August10,2000 372 2064 173 Trt~p 3 August 10,20001August10,2000 384 2076 174 Trnp 3 August10,2000IAugust 10.2000 396 2088 175 Trt~p 3 August10,20001August 10,2000 408 2100 176 Trap 3 August10,20001August10,2000 420 2112

177 Trt~p 3 August 10,2000IAugust10,2000 432 2124

178 Trap 3 August 11, 2000 1 August 11, 2000 444 2136

179 Tr:Jp 3 August 11,2000IAugust11,2000I 456 2148 180 Tro:~p 3 Auoust 1 1, 2000 Ayoust 11 , 2000 I 468 2160 181 Trop 3 I AUQUSt 1 1, 2000 AuQUI!:t 1 1, 2000 I 480 2172

182 Trt~p 3 I August 1 1, 2000 1 August 11, 2000 I 492 2184

183 I Trap 3 August 11, 2000 August 1 1, 2000 504 2196

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APPENDIX s·

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Photographs of Site Activities

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-----------------------------------·-··

Photo 1: View to the northeast in sediment trap 4t1 after excavation of sediment.

Photo 2: View to the northwest in sediment trap #1 after excavation of sediment.

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Photo 3: View to the west in Mortandad stream channel. The culvert was installed to access soil piles adjacent to sediment trap #1.

Photo 4: View looking northwest at truck loading operations while loading soil piles adjacent to sediment trap #1.

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-----------------------------·· ---

Photo 5: View looking west at soil pile area with half of the soil piles removed.

Photo 6: View looking west at the soil pile area with soil piles being loaded.

__________________________________________ __.

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Photo i: View looking east ill sediment trap lt3.

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~---------------------------~

Photo 9: View looktng west 111 sod1111•mt tr~1p :13 3! excavotor stockptlt.") for tran::;:er to trucks.

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--~~ ----~----------~ -- ~~-------~~----------- ~-- .

F>hoto 11: View looking east in sediment trap #3 at gravel Installation.

F>hoto 12: View looking west in sediment trap #3 at gravel installation.

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Photo 1 3: View looking east in sediment trap #3 at gravel installation.

Photo 14: View looking west in sediment trap #3 at gravel installation.

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DOCUMENT/DISTRIBUTION SHEET ·. WGJI/PMC/SEA Team at Los Alamos

1545 10.:00 Projec:t Cl~m-Out Report Final CIOM out Report lor Mort•ndad C.nyon Sodim•nl ':'rap Ma.ntt>n•nee 00 ··-···--" . . . ...

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