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200204919 Notification of Hazardous Substance Storage, Release, and Disposal Building and Parcel Name of Stored Date of Storage, Release, Remedial Action Description Hazardous Released Disposal Substance(s) Disposed Northern Tier - North Magazine Area - Tract 23 1,000 pound bomb, 2,000 pound bomb, 90 pound Stored World War II No remediation is required. and 102 magazines C -1 -1 bomb, 220 pound bomb, 260 pound fra menta- 1942 to 1950 Record of Decision ROD through C -7 -15. tion bomb and 105 MM Operable Unit (OU2) - No Further Remedial Action 3.5' Rockets, 4.5" Rockets, A2 fuzes and Stored Korea War 155MM Shells. 1951 to 1957 500 pound bomb, 1,000 pound bomb, 500 MK82 Stored Vietnam War to end Bomb, 8" Projectile M106 and 750 M117 bomb Jan 1966 to Dec 1974 and 8" M106 Projectile. Magazine building C -14, C -1 -10, Soil samples in 1991 detected lead (Pb) in Released 1991 EA Soil Sampling Final Document of the Remedial C -3-1, C -3 -4, C -3 -8, C -3 -10, magazines C -34, C -3 -10, C4-12 and C -5-5 was Investi ation Re rt dated C -4 -9, C -4 -12 and C -5 -5 found to be 18.8 - 1,500 u / . Magazine C -3 -4 November 1996 state that the concentration of Pb was 1,500 u which screening results appear to exceeds Industrial RBC of 1,000 u overestimate the actual con - tamination throughout the years of sampling at the North Ma a- Biased sampling in 1993 SCD detected lead Released 1993 SCD Soil Sampling zine Area. Based on the low Pb in magazines C -14, C -1 -10, C -3 -8 and Results Biased sampling, rid concentrations of Pb and Cd C -4 -9 exceeded the USEPA Residential sampling and confirmation detected in confirmation soil screening level of 400 u / . The concentration sam plin g) samples collected during 1993 2,113 u /g) of Pb detected from Magazine and 1995, the North Magazine Area C -1 -4 exceeds the USEPA Industrial screening is not considered a major source level of 1,000 u / . of contamination at CHAAP. Grid sampling found that Cadmium concen- Released Record of Decision ROD trations of 40 - 64 u /g) exceeded Residential Operable Unit Two 01.12 - No RBC in magazine C -3-8 but below the Industrial Further Remedial Action RBC. Lead concentrations from magazine C-4 -9 and C -4 -12 now fall below the USEPA Residential screening level of 400 u / . Lead concentrations at C -3-4 817 u and C -3-8 887 u exceed USEPA Residential screening of 400 ug/g u /g but below Industrial screening level of 1,000 u / . Magazines C -1 -10 1,079 u /g) and C -1 -4 1,304 u /g) exceed lead concentrations for USEPA Industrial screening level of 1,000 u / . Confirmation sampling indicated Zn 119 Released ug/ at Magazine C -3-1 was below Industrial and Residential RBCs. Lead concentrations in Magazine C -3 -4 was found to have a lower concentrations of 7.89 ug/g u /g then the previous sampling, Inorganic As 6.82 u was found to exceed the Industrial RBC in Magazine C -34. Final sampling was completed in 1995 Released 1995 RI Soil Sample Results with results indicating that at Magazine C -3 -8 Cadmium (Cd) was not detected above the certified reporting limit CRL of .515 u / ) All other inorganic anal es were detected below the upper limit of background in the surface and subsurface soil samples. Determined and Prepared by: Title: Site: Location: Ms. Jo Short Realty Specialist Cornhusker Arm Ammunition Plant Grand Island, NE 68803 EXHIBIT "C" EXHIBIT "C" ATTACKED TO AND MADE A PART OF QUITCLAIM DEED