Impact of Utility GPI Activities on a State

Impact of Utility GPI Activities on a State REMP Program RETS-REMP Workshop 6/23/2008 Dale Dusenbury, MSPH, CHP Health Physicist Supervisor NC Radiation Protection Section

Environmental Monitoring • Media near nuclear facilities are monitored by the ERE Branch, a non-regulatory program in the NC Radiation Protection Section. • The goal is to provide an independent check and confirmation of utility results. • Due to size and resource constraints split sample monitoring can occur at only at limited number of sites.

Facility: BRUNSWICK NUCLEAR PLANT, Highway 87, Southport, N. C. Progress Energy Corp. /CP&L Sample Type Location CP &L State Sample Frequency/ Period Quantity (minimum) Collector Sample Delivery Pick up at Harris E&E Center on Thursdays Remarks Air filter and cartridge. (cartridge counted for I-131) Air (Low-Vol. ) 201 23 Weekly Mondays 1 filter & 1 cartridge CP&L* Surface Water 400 401 48 39 Monthly (1 st Monday of month) 1. 0 gal. CP&L* Composite (1 month) CP&L KEEP COLD !! (1 free swimmer, 1 bottom feeder, and 1 invertebrate) Milk Fishlife Vegetation Sediment N/A 700 701 702 800 500 46 Semi-annual (depending on availability) 23 Semi-annual (May and August) 30 Annually (no specific dates) 0. 5 kg CP&L & State Split Samples collected by CP&L. Independent locations collected by State 0. 5 liter CP&L & State Split Samples collected by CP&L. Independent locations collected by State

SHEARON-HARRIS NUCLEAR PLANT, New Hill-Holleman Road, New Hill, N. C. Progress Energy Corp. /CP&L Sample Type Location CP&L Sample Frequency/Period Quantity (minimum) Collecto r Sample Delivery Remarks State Pick up at E&E Center on Thursdays Air (Low. Vol. ) 2 4 Weekly - Mondays Surface Water 38 40 26* 44 45 22* Bi-weekly (every other Monday) 1. 0 gal. CP&L* Composite (2 weeks) *Monthly Composite collected by CP&L and analyzed for H-3 5 13 Monthly (2 nd week of month) 1. 0 gal. CP&L* KEEP COLD !! 39 59 60 68 69 70 71 72 Quarterly 1. 0 gal. CP&L Samples analyzed for H-3 and Gamma Emitters F 1 -44 F 2 -44 52 53 Semi-annual (June and September) 1. 0 kg 46 51 Semi-annual (Spring and Fall) 0. 5 kg Milk Ground Water Fish Life Vegetatio n 1 filter & 1 cartridge CP&L* Air filter and cartridge. (cartridge counted for I-131) CP&L KEEP FROZEN !! (1 free swimmer, 1 bottom feeder, and 1 forager - 1 each per site) CP&L & State Split Samples collected by CP&L. Independent locations collected by State

Mc. GUIRE NUCLEAR PLANT, Huntersville, N. C. Duke Energy Corp Sample Type Location Duke State Air (Low-Vol. ) 120 134 125 Surface Water 128 135 Milk 139 Fishlife 129 Sediment 188 129 Weekly - Tuesdays Bi-weekly (every other Tuesday) Monthly Quantity (minimum) Collector Sample Delivery Ship to RPS via Fed-Ex or UPS Remarks 1 filter & 1 cartridge Duke* Air filter and cartridge. (cartridge counted for I-131) 1. 0 gal. Duke* Composite samples (2 week) 1. 0 gal. Duke* KEEP COLD !! Duke KEEP FROZEN !! (1 free swimmer, 1 bottom feeder, and 1 forager) (4 th Tuesday of month) 129 Vegetation Sample Frequency/Period Semi-annual (July and October) 188 129 Semi-annual (June and September) Annually (November) 1. 0 kg Duke & State Split Samples collected by CP&L. Independent locations collected by State 0. 5 liter Duke & State Split Samples collected by CP&L. Independent locations collected by State * Quarterly collected together by State and CP&L. State will call in advance for arrangements. Duke and Radiation Protection Section (RPS) use same site numbers.

Radiation Analysis Procedures for Environmental Samples Derived from DENR/RPS 2004 Environmental Radiation Surveillance Plan and 1996 Environmental Radiation Surveillance Report; Appendix B, pages 6 -7 to 6 -12 Updated 07/13/07 by BDD

AIR Samples Samp le Type Facility Action Level Required Analyses 1. Gross on each air filter 1. Routine (3 -day, 10 Statewid 2. If Beta ( ) > 0. 5 day, or 2 analyses w/ 7 e p. Ci/m 3 days apart) sites 3. If Cs-137 > 0. 2 2. Gamma-scan (γ) p. Ci/m 3 3. Sr-90 analysis Air Filter (parti culate All other facilities ) (except GE) GE 1. Routine 2. If > 0. 5 p. Ci/m 3, detectable I-131, or Cs-137 > 0. 1 p. Ci/m 3 3. If Cs-137 > 0. 2 p. Ci/m 3 1. Individual gross alpha (α) and gross beta ( ), and composite for (γ) 2. Individual gamma-scan (γ) 3. Sr-90 analysis 1. Routine 1. Individual gross alpha (α)

AIR Samples Sample Type Air Cartridge (Iodine) Facility Action Level Required Analyses NRC-Contract 1. Routine sites (nuclear) 1. Gamma-scan (γ) on individual cartridges Non-Contract sites 1. Individual gamma-scan (γ) 2. Gamma-scan (γ) re-analysis on different detector 1. Routine 2. If any detectable Iodine (isotopic)

SURFACE & GROUND WATER Samples Sample Type Facility Statewide sites Surface Water or Waste Water NRCContract sites (nuclear) Non. Contract sites (nuclear) Pulstar (PS), and (B-52) GE Action Level Required Analyses 1. Routine 2. If Beta ( ) > 5. 0 p. Ci/L 3. If Alpha (α) > 5. 0 p. Ci/L 4. If Cs-137 > 10. 0 p. Ci/L 1. Gross alpha (α) and gross beta ( ) 2. Gamma-scan (γ) 3. Ra-226 analysis 4. Sr-89 and Sr-90 analysis 1. Routine 2. If Cs-137 1. Gamma-scan (γ), Tritium (H-3), and Low Level Iodine (LLI) analyses 2. Sr-89 and Sr-90 analysis > 10. 0 p. Ci/L 1. Routine 2. If Beta ( ) > 5. 0 p. Ci/L 3. If Alpha (α) > 15. 0 p. Ci/L 4. If Cs-137 > 10. 0 p. Ci/L 1. Gross alpha (α), gross beta ( ), and (H-3) 2. Gamma-scan (γ) 3. Total Uranium (U) analysis 4. Sr-89 and Sr-90 analysis 1. Routine 2. If Alpha (α) > 5. 0 p. Ci/L 1. Gross alpha (α) 2. Alpha (α) Spectroscopy or ICP-MS for uranium

SURFACE & GROUND WATER Samples Finishe d Water or Groun d Water Statewide sites 1. Routine 2. If Alpha (α) > 5. 0 p. Ci/L for any sample 3. If Ra-226 > 3. 0 p. Ci/L 4. If Alpha (α) > 15. 0 p. Ci/L and Ra-226 and Ra-228 combined > 5. 0 p. Ci/L 1. Gross alpha (α) and gross beta ( ) 2. Gamma-scan (γ) and Ra-226 3. Ra-228 analysis 4. Total Uranium and quarterly sample analysis of Ra-226 and Ra-228 until < 5. 0 p. Ci/L NRCContract, Non. Contract, Pulstar, and Faro, NC (B-52) 1. Routine 2. If Beta ( ) > 5. 0 p. Ci/L for any sample 3. If Alpha (α) > 15. 0 p. Ci/L 1. Gross alpha (α), gross beta ( ), and (H-3) 2. Gamma-scan (γ) 3. Total Uranium 1. Routine 2. If Alpha (α) > 5. 0 1. Gross alpha (α) and gross beta ( )

PRECIPITATION (Rainfall Collection) Samples Sample Type Facility Statewide Rainfall Action Level Required Analyses 1. Routine 2. If Beta ( ) > 10. 0 n. Ci/m 2 1. Gross beta ( ) 2. Gamma-scan (γ) and Sr-89 and Sr-90 analyses SOIL and SEDIMENT Samples Sample Type Facility NRC-Contract sites (nuclear) Soil and Sedime nt Non-Contract sites (except GE and PCS-Phosphate) GE PCS-Phosphate (TG) Action Level Required Analyses 1. Routine 1. Gross alpha (α) and gross beta ( ), gamma-scan (γ) 1. Routine 2. If Beta ( ) > 20. 0 p. Ci/g (dry) for any sample 1. Gross alpha (α) and gross beta ( ), gamma-scan (γ) 2. Sr-89 and Sr-90 analysis 1. Routine 2. If Alpha (α) > 15. 0 p. Ci/g (dry) 1. Gross alpha (α) and gross beta ( ) 2. Alpha (α) Spectroscopy or ICPMS for uranium 1. Routine 1. Gross alpha (α) and gross beta ( )

Potential Ingestion-Pathway Samples Sam ple Type Facility Statewide sites Action Level Required Analyses 1. Routine 2. If Cs-137 > 5. 0 p. Ci/L 3. Regardless of Gammascan (γ) results 1. Gamma-scan (γ) for each sample. 2. Sr-89 and Sr-90 3. Sr-89 and Sr-90 for 1/3 of samples monthly on an alternating schedule [subject to update --RB] 1. Routine 1. Gamma-scan (γ) and Low. Level Iodine (LLI) Milk NRCContract sites (nuclear)

Potential Ingestion-Pathway Samples(Continued) Sample Type Facility NRCContract sites (nuclear) Vegetation Non. Contract (nuclear) and Pulstar GE Action Level Required Analyses 1. Routine 1. Gamma-scan (γ) for each sample 1. Routine 2. If Beta ( ) > 20. 0 p. Ci/g (wet) for any sample 1. Gross alpha (α), gross beta ( ), and gamma-scan (γ) on edible portions 2. Sr-89 and Sr-90 analysis 1. Routine 2. If Alpha (α) > 0. 3 p. Ci/g (wet) 1. Gross alpha (α) 2. Isotopic Uranium (Alpha-Spec or ICP-MS)

Potential Ingestion-Pathway Samples(Continued) Samp le Type Facility NRCContract sites (nuclear) Seafo od & Fishli fe Non. Contract sites (nuclear) Action Level Required Analyses 1. Routine 1. Gamma-scan (γ) analysis 1. Routine 2. If Beta ( ) > 5. 0 p. Ci/g (dry) 1. Gross alpha (α), gross beta ( ), gamma-scan (γ) 2. Sr-89 and Sr-90

Sampling Totals

Analytical Sensitivity Values

Tritium MDA and Recent Initiatives • Tritium in Ground Water MDA-250 p. Ci/L • Counted using multiple 100 minute counts by liquid scintillation. Tritium split sampling in ground water began near Brunswick in June, 2007. Tritium split sampling near Mc. Guire in May, 2008.

RPS Split Sampling for Tritium in Groundwater near the Brunswick Plant Initial and Ongoing Efforts

RPS Split Sampling for Tritium in Groundwater near the Brunswick Plant Initial and Ongoing Efforts

Notification • On 6/15/07 RPS personnel were notified that tritium had been discovered in water in a manway near the elevated stabilization pond at the Brunswick plant. • Brunswick personnel arranged for contractors to sink wells in the shallow, intermediate and deep aquifers at the site. • RPS agreed to perform split sampling of ground water with Brunswick personnel.

Shallow Well Field

May Sampling Data –Shallow Well Field

Marsh Well Field

Marsh Well Field

Intermediate Well Field

Intermediate Well Field

RPS Split 4/8/08

Deep Well Field

Initial Split Sample Data

Ongoing Activities • Regular sample collection from wells around the stabilization pond continues. • RPS staff will conduct split sampling of ground water at sites 24 A, 19 B, and 19 C during April, 2008. • Contacts between RPS and utilities are continuing regarding ground water tritium monitoring projects.

Results for Brunswick Split Samples Date 4/11/2008 Results in p. Ci/L BNP State of NC HEEC BNP: State Ratio. HEEC: State Well ESS-19 B 17, 930 16, 799 17, 200 Well ESS-19 C 449, 700 447, 843 436, 000 Well ESS-24 A < 247 <250 <247 Ratio BNP: HEEC 1. 04 1. 03 <LLD 1. 07 1. 00 <LLD Ratio 1. 02 0. 97 <LLD

Split Sampling at Mc. Guire Nuclear Station

Split Sample Results at Mc. Guire Nuclear Station 5/6/2008 Date 5/6/2008 MNS Results in p. Ci/L NCRPS MNS MDA RPS MDA Ratio RPS: MNS Well MGW_93 259 716 173 < 250 2. 76 Well MGW-93 R 233 383 172 < 250 1. 64 Well MGW-103 2890 3236. 7 177 < 250 1. 12 Well MGW-103 R 2100 2545. 7 175 < 250 1. 21

Routine Sampling at Harris Nuclear Plant

Harris Ground Water Monitoring

Conclusions • Performing split sampling as a follow on to existing activities has been possible due to close coordination w/ utility. • Agreement of limited set of split samples was generally good based on simple ratios. • State involvement assisted local environmental agencies in their information gathering. • A limited number of sites may be recommended for inclusion in the State’s routine monitoring program.