Apendices_from_2020_Kotzebue_Site_Characterization_Ltd_Removal_Gwater_Monitoring.pdf

APPENDIX A

Field Notes

12/7/2020 Kotzebue, AK 9490424 Tidal Data Print View

1/1

Station Name: Kotzebue, AK Action: Daily

Product: Tide Predictions Start Date & Time: 2020/9/29 12:00 AM End Date & Time: 2020/10/4 11:59 PM

Source: NOAA/NOS/CO-OPS Prediction Type: Harmonic

Datum: MLLW Height Units: Feet

Time Zone: LST/LDT

Help Print H ei gh t i n fe et

(M

LL

W

NOAA/NOS/CO-OPS

Tide Predictions at 9490424, Kotzebue AK

From 2020/09/29 12:00 AM LST/LDT to 2020/10/04 11:59 PM LST/LDT

0.24

0.56

0.03

0.50

0.22

0.53

0.02

0.55

0.20

0.53

0.03

0.59

0.17

0.52

0.04

0.62

0.15

0.50

0.07

0.64

0.13

0.48

0.10

0.65

12:00 AM

9/29

12:00 PM

9/29

12:00 AM

9/30

12:00 PM

9/30

12:00 AM

10/1

12:00 PM

10/1

12:00 AM

10/2

12:00 PM

10/2

12:00 AM

10/3

12:00 PM

10/3

12:00 AM

10/4

12:00 PM

10/4

12:00 10/5

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.1

0.2

0.3

0.4

0.5

0.6

0.7

NOAA/NOS/Center for Operational Oceanographic Products and Services

Note: The interval is High/Low, the solid blue line depicts a curve fit between the high and low values and approximates the segments between.

Disclaimer: These data are based upon the latest information available as of the date of your request, and may differ from the published tide tables.

High/Low Tide Prediction Data Listing

Date Day Time Hgt Time Hgt Time Hgt Time Hgt

2020/09/29 Tue 01:09 AM 0.24 L 06:33 AM 0.56 H 1:52 PM 0.03 L 8:43 PM 0.50 H

2020/09/30 Wed 02:13 AM 0.22 L 07:46 AM 0.53 H 2:39 PM 0.02 L 9:12 PM 0.55 H

2020/10/01 Thu 03:09 AM 0.20 L 08:43 AM 0.53 H 3:20 PM 0.03 L 9:38 PM 0.59 H

2020/10/02 Fri 03:57 AM 0.17 L 09:22 AM 0.52 H 3:58 PM 0.04 L 10:04 PM 0.62 H

2020/10/03 Sat 04:43 AM 0.15 L 09:55 AM 0.50 H 4:35 PM 0.07 L 10:31 PM 0.64 H

2020/10/04 Sun 05:29 AM 0.13 L 10:28 AM 0.48 H 5:11 PM 0.10 L 10:59 PM 0.65 H

APPENDIX B

Photo Pages

2020 Field Activities Photo Log

Former IHS/BIA Hospital – School Pipeline Release Kotzebue, Alaska Photo page 1

Photo 1: Advancing Boring B16; looking northwest. (July 30, 2020)

Photo 2: Bailer used to confirm presence of free product in Monitoring Well

MW1. (September 30, 2020)

Former IHS/BIA Hospital – School Pipeline Release Kotzebue, Alaska Photo page 2

Photo 3: Prior to excavation. Paint was used to demarcate approximate area to be excavated; looking northeast. (October 1, 2020)

Photo 4: Temporary “Potentially Clean” stockpile area and liner; looking northeast. (June 13, 2019)

Former IHS/BIA Hospital – School Pipeline Release Kotzebue, Alaska Photo page 3

Photo 5: Approximate 56 cy stockpile of “Potentially Clean” soil; looking northeast. (October 3, 2020)

Photo 6: Drums encountered during excavation activities; looking southwest.

Circled drums were left in place. (October 2, 2020)

Kotzebue, Alaska Photo page 4

Photo 7: Inside of the buried drums. (October 1, 2020)

Photo 8: Empty 20-foot steel pipe (4-inch) encoutnered on the north side of the excavation; looking south. (October 1, 2020)

Kotzebue, Alaska Photo page 5

Photo 9: Fibrous material encountered in the northeast portion of the excavation.

Analytical results indicates it is non-ACM fiberglass. (October 1, 2020)

Photo 10: Charred debris and soil encountered in the northeast portion of the excavation; looking northeast. (October 1, 2020)

Kotzebue, Alaska Photo page 6

Photo 11: Fire brick encountered in the excavation. (October 1, 2020)

Photo 12: Cement asbestos pipe encountered in the excavation. (October 1, 2020)

Kotzebue, Alaska Photo page 7

Photo 13: Sheen observed entering the excavation. (October 2, 2020)

Photo 14: Silt fence separating the cell for the 2020 soils and the soils generated in 2019 (background); looking southwest. (September 30, 2020)

Kotzebue, Alaska Photo page 8

Photo 15: Soils generated in 2019 were segregated and a silt fence placed around the perimeter; looking northwest. (September 30, 2020)

Photo 16: Landfarm once 2020 generated soils were spread into cell; looking southeast. Photo provided by KICC. (October 10, 2020)

Kotzebue, Alaska Photo page 9

Photo 17: Landfarm once 2020 generated soils were spread into cell; looking southwest. The low point of the landfarm (evidence by standing water) and GAC treatment system is shown on the left side and the silt fence demarcing the 2019 soils is in the background. Photo provided by KICC. (October 10, 2020)

Photo 18: Barrier curtain was placed around the perimeter of the excavation and clean material was used to secure the liner to the base of the excavation; looking southwest. (October 3, 2020)

Kotzebue, Alaska Photo page 10

Photo 19: Soil was compacted in 1-foot lifts with an excavator bucket until the backfill reached above the water table; looking southwest. (October 3, 2020)

Photo 20: Rebar (yellow arrow) was used to secure the liner to the excavation sidewalls at approximately 2 feet bgs. (October 3, 2020)

Kotzebue, Alaska Photo page 11

Photo 21: Compacting the excavation; looking northeast. (October 3, 2020)

Photo 22: GAC treatment system at the landfarm; looking southeast. Treated water is discharged through the hose to the outside of the landfarm. (September 30, 2020)

Kotzebue, Alaska Photo page 12

Photo 23: Free product observed in the purgewater of Well MW6. (October 4, 2020)

Photo 24: Sheen observed in the purgewater from Well MW9. (October 4, 2020)

Kotzebue, Alaska Photo page 13

Photo 25: Sheen observed in the purgewater from Well MW8. (October 4, 2020)

Photo 26: Well MW8 was located beneath the front drivers side of a vehicle staged on Lot 5; looking northwest. (October 4, 2020)