ExekIrn. M Exelon Generation Company, LLC LaSalle County Station 2601 North 210Road Marseilles, IL 61341-9757 www.exeloncorp.com Nuclear RA05-33 10 CFR 50.36a April 29, 2005 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-1 1 and NPF-1 8 NRC Docket Nos. 50-373 and 50-374 Subject: 2004 Annual Radioactive Effluent Release Report Enclosed is the Exelon Generation Company, LLC, LaSalle County Station 2004 Annual Radioactive Effluent Release Report, submitted in accordance with 10 CFR 50.36a, "Technical specifications on effluents from nuclear power reactors," paragraph (a)(2) and Technical Specification 5.6.3, 'Radioactive Effluent Release Report." Should you have any questions concerning this letter, please contact Mr. Terrence Simpkin, Regulatory Assurance Manager, at (815) 415-2800. Respectfully, Susan R. Landahl Site Vice President LaSalle County Station Attachment cc: Regional Administrator - NRC Region IlIl NRC Senior Resident Inspector - LaSalle County Station CAY313
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ExekIrn. MExelon Generation Company, LLCLaSalle County Station2601 North 210RoadMarseilles, IL 61341-9757
www.exeloncorp.com Nuclear
RA05-33 10 CFR 50.36a
April 29, 2005
U. S. Nuclear Regulatory CommissionAttention: Document Control DeskWashington, D.C. 20555
LaSalle County Station, Units 1 and 2Facility Operating License Nos. NPF-1 1 and NPF-1 8NRC Docket Nos. 50-373 and 50-374
Enclosed is the Exelon Generation Company, LLC, LaSalle County Station 2004Annual Radioactive Effluent Release Report, submitted in accordance with10 CFR 50.36a, "Technical specifications on effluents from nuclear power reactors,"paragraph (a)(2) and Technical Specification 5.6.3, 'Radioactive Effluent ReleaseReport."
Should you have any questions concerning this letter, please contactMr. Terrence Simpkin, Regulatory Assurance Manager, at (815) 415-2800.
Respectfully,
Susan R. LandahlSite Vice PresidentLaSalle County Station
Attachment
cc: Regional Administrator - NRC Region IlIlNRC Senior Resident Inspector - LaSalle County Station
CAY313
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
Supplemental Information
1. Regulatory Limits
a. Gaseous Effluents
1) The air dose due to noble gases released in gaseous effluents, from each reactor unit, from the siteshall be limited to the following:
a) During any calendar quarter: Less than or equal to 5 mrad for gamma radiation and lessthan or equal to 10 mrad for beta radiation, and
b) During any calendar year: Less than or equal to 10 mrad for gamma radiation and lessthan or equal to 20 mrad for beta radiation.
2) The dose to an individual from radioiodincs and radioactive materials in particulate form, andradionuclides, other than noble gases, with half-lives greater than eight days in gaseous effluentsreleased, from each reactor unit, from the site shall be limited to the following:
3)a) During any calendar quarter: Less than or equal to 7.5 mRems to any organ, and
b) During any calendar year: Less than or equal to 15 mRems to any organ.
b. Liquid Effluents
I) The dose or dose commitment to an individual from radioactive materials in liquid effluentsreleased, from each reactor unit, from the site shall be limited:
a) During any calendar quarter: Less than or equal to 1.5 mRem to the total body and to lessthan or equal to 5 mRem to any organ, and
b) During any calendar year: Less than or equal to 3 mRem to the total body and to less thanor equal to 10 mRem to any organ.
c. Total Dose -
I) The dose or dose commitment to any member of the public, due to releases or radioactivity andradiation, from uranium fuel cycle sources shall be limited to less than or equal to 25 mRem to thebody or any organ (except the thyroid, which shall be limited to less than or equal to 75 mRcm)over 12 consecutive months.
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
Supplemental Information (continued)
2. Allowable Concentrations -
a. Gaseous Effluents
I) The dose rate due to radioactive materials released in gaseous effluents from the site shall belimited to the following:
a) For noble gases: Less than or equal to 500 mRem/year to the total body and less than orequal to 3000 mRem/year to the skin, and
b) For all radioiodines and for all radioactive materials in particulate form, andradionuclides, other than noble gases, with half-lives greater than eight days: Less than orequal to 1500 mRem/year to any organ via the inhalation pathway.
b. Liquid Effluents
I) The concentration of radioactive material released from the site shall be limited to ten (10) timesthe concentrations specified in 10 CFR Part 20, Appendix B, Table 11, Column 2 for radionuclidesother than dissolved or entrained noble gases. For dissolved or entrained noble gases, theconcentration shall be limited to the following:
Not applicable - average energy is no longer used to determine dose to the public.
4. Measurements and Approximations of Total Radioactivity
a. Gaseous Effluents
1) Containment Vent and Purge System is sampled by grab sample which is analyzed for principalgamma emitters and H-3.
2) Main Vent Stack is sampled by grab sample, which is analyzed for principal gamma emitters andH-3.
3) Standby Gas Treatment System is sampled by grab sample, which is analyzed for principal gammaemitters.
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
Supplemental Information (continued)
4) All release types as listed in I and 2 above, at the vent stack and as listed in 3 above, at the StandbyGas Treatment System whenever there is flow, are continuously sampled by charcoal cartridge andparticulate filter paper, which are analyzed for iodines and principal gamma emitters. Particulatefilter papers are composited and analyzed for gross alpha, Sr-89 and Sr-90. Noble gases, gross betaand gamma are continuously monitored by noble gas monitors for the vent stack and the standbygas treatment system.
b. Liquid Effluents
I) Batch waste release tanks are sampled each batch for principal gamma emitters, 1-131, dissolvedand entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55.
2) Continuous releases are sampled continuously in proportion to the rate of flow of the effluentstream and by grab sample. Samples are analyzed for principal gamma emitters, 1-131, dissolvedand entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55.
5. Batch Releases
a. Gaseous
1) Number of batch releases: None
2) Total time period for batch releases: N/A
3) Maximum time period for a batch release: N/A
4) Average time period for batch releases: N/A
5) Minimum time period for a batch release: N/A
b. Liquid
1) Number of batch releases: None
2) Total time period for batch releases: Min. N/A
3) Maximum time period for a batch release: Min. N/A
4) Average time period for batch releases: Min. N/A
5) Minimum time period for a batch release: Min. N/A
6) Average stream flow during periods ofrelease of effluent into a flowing stream: gpm N/A
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
Supplemental Information (continued)
6. Abnormal Releases
a. Gaseous
1) Number of releases: None
2) Total activity released: N/A
b. Liquid
1) Number of releases: None
2) Total activity released: N/A
7. Process Control Program
There were no changes to the Process Control Program during this time period.
8. Effluent Monitoring Instrumentation timeclocks and sample anomalies.
Time clocks:
There were no effluent monitoring time clocks exceeded in 2004
Sample anomalies:
During refueling outage LIRIO, 1-131 was detected, at levels slightly above LLD, via analysis of the Waste WaterTreatment Facility effluent composite sample. This anomalous sample result was entered into the Station CorrectiveAction Program as AR# 195907 and is discussed in this section, as this sample is not required by the ODCM program.Rather, the WWTF sample is obtained and analyzed daily when the facility is in operation and serves as a trendingtool. The Cooling Pond Blowdown to the Illinois River is monitored via composite sampling and serves as the meansfor determining dose to the public. Detection of activity at the WWTF prompts in-plant "clean sump" sampling toidentify and correct the source. In this case the source of 1-131 activity were traced back to the Unit One fire sump, a"clean" sump. Efforts to identify inputs into the fire sump as a source were unsuccessful. A review of medicalrecords was also inconclusive, as some records did not specify an isotope. As a conservative measure a dosecalculation was performed since the WWTF discharges to the LaSalle Cooling Lake. Utilizing the activity levelsmeasured and the gallon throughput of the WWTF for the period, a total activity of 1.9 uCi's of 1-131 resulted in acalculated resultant maximum total body dose of 5.484 E-10 mRem (child) and Internal organ dose of 3.69E-10mRem (infant thyroid). Again, this calculation was performed as a conservative measure. It should be noted that theLaSalle Cooling Lake does not serve as a drinking water supply and was closed to public access during the period inquestion (1/1 3/04 - 1/15/04). No positive activity was identified throughout the reporting period in ODCM requiredPond Blowdown composite samples. LaSalle Cooling Lake REMP samples were reviewed following the occurrenceand found to reveal no adverse affects.
9. Offsite Dose Calculation Manual Revisions.
No revisions were made to the LaSalle ODCM during the reporting period
LASALLE COUNTY NUCLEAR POWER STATIONEFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
UNITS ONE AND TWODOCKET NUMBERS 50-373 AND 50-374
GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES
. |Estimated| 4th Qtr |Total Error % |I Units I Ist Qtr I 2nd Qtr I 3rd Qtr
A. Fission and Activation Gas Releases
1. Total Release Activity Ci 3.45E+03 2.85E+03 2.36E+03 2.63E+03 3.50E+012. Average Release Rate uCi/sec 4.39E+02 3.62E+02 | _2.97E+02 | 3.31E+02|3. Percent of Technical Specification %* *Limit
B. Iodine Releases
1.Total 1-131 Activity Ci 3.64E-01 2.68E-01 2.62E-01 2.83E-01 3.50E+012. Average Release Rate uCi/sec 4.63E-02 3.41 E-02 3.30E-02 3.56E-023. Percent of Technical Specification %/ * ,
Lim itI _ _ __ __ I _ _ __
C. Particulate (> 8 day half-life) Releases
1. Gross Activity Ci 8.13E 03 6.48E-03 8.36E-03 9.21 E-03 3.30E+012. Average Release Rate uCi/sec 1.03E-03 | 8.24E-04 1.05E-03 1.16E-033. Percent of Technical Specification %Limit3. Gross Alpha Activity Ci <I.OE-I1 <I.OOE-11 <I.OOE-11 <I.OOE-11
D. Tritium Releases
1. Total Release Activity Ci 8.15E+00 3.28E+01 1.29E+01 2.43E+01 2.10E+012. Average Release Rate uCi/sec 1.04E+00 4.17E+00 1.62E+00 3.06E+oo3. Percent of Technical Specification % | * I * *
Lim it I _ _ I _ _ _ I _ _ _ I I_ _
"*" This information is contained in the Radiological Impact on Man section of the report.
"<" Indicates activity of sample is less than LLD given in uCi/ml
LASALLE COUNTY NUCLEAR POWER STATIONEFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
GASEOUS EFFLUENTS-ELEVATED RELEASEUnit I and Unit 2 Continuous Mode
I Units l ' Qtr I 2nd Qtr | 3d Qtr I 4th Qtr
I. Fission and Activation Gas ReleasesAr-41 Ci 1.97E-04 <1.OOe-4 <1.OOe-4 <1.OOe-4Kr-85 Ci <1.OOe-4 <1.OOe-4 <1.OOe-4 <1.OOe-4Kr-85m Ci 5.29E+02 7.27E+02 6.1OE+02 6.64E+02Kr-87 Ci 1.42E+02 2.16E+02 1.44E+02 1.75E+02Kr-88 Ci 8.58E+02 1.19E+03 9.60E+02 1.04E+03Xe-131m Ci <1.OOe-4 <1.OOe-4 <1.OOe-4 <1.OOe-4Xe-133 Ci 8.71 E+02 6.40E+02 5.62E+02 6.07E+02Xe-133m Ci <1.00e-4 <1.00e-4 <1.00e-4 <1.00e-4Xe-135 Ci 7.22E+02 2.27E+01 2.65E+01 2.84E+01Xe-135m Ci 3.17E+02 5.66E+01 5.53E+01 5.48E+01Xe-138 Ci 1.58E+01 <1.OOe-4 <1.OOe-4 6.OOE+01TOTAL Ci 3.45E+03 2.85E+03 2.36E+03 2.63E+03
2. Iodine Releases1-131 Ci 8.90E-02 3.88E-02 3.72E-02 3.73E-021-132 Ci 2.98E-02 4.47E-02 3.61 E-02 4.04E-021-133 Ci 1.42E-01 9.51 E-02 9.59E-02 1.06E-011-134 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-111-135 Ci 1.03E-01 8.89E-02 9.28E-02 9.92E-02TOTAL IODINE Ci 3.64E-01 2.68E-01 2.62E-01 2.83E-01TOTAL 1-131,1-133,I-135 Ci 3.34E-01 2.23E-01 2.26E-01 2.43E-01
3. Particulate (> 8 day half-life) ReleasesCr-51 Ci <1.OOe-11 <1.00e-11 <1.OOe-11 <1.OOe-11Mn-54 Ci <1.OOe-11 <1.OOe-11 2.27E-05 <1.OOe-11Co-57 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Fe-55 Ci <1.OOe-1i <1.OOe-11 <1.OOe-11 <1.OOe-11Co-58 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Fe-59 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Co-60 Ci 2.91E-04 7.70E-05 2.70E-04 2.15E-04Zn-65 Ci <1.OOe-11 <1.OOe-11 <1.00e-11 <1.OOe-11Sr-89 Ci 2.99E-03 2.86E-03 3.70E-03 4.36E-03Sr-90 Ci <1.OOe-1i <1.OOe-11 <1.OOe-11 <1.OOe-11Zr-95 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Mo-99 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Ru-103 Ci <1.OOe-1i <1.OOe-11 <1.OOe-11 <1.OOe-11Sn-117m Ci <1.OOe-11 <1.OOe-11I <1.OOe-11 <1.OOe-11Cs-134 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11Cs-137 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 1.61E-05Ba\La-140 Ci 4.64E-03 3.54E-03 4.37E-03 4.62E-03Ce-141 Ci 2.04E-04 <1.OOe-11 <1.OOe-11 <1.OOe-11Ce-144 Ci <1.OOe-11 <1.OOe-11 <1.OOe-11 <1.OOe-11
TOTALPARTICULATES Ci 8.13E-03 6.48E-03 8.36E-03 9.21E-03
4. Tritium Releases1.Total Release Activity I Ci I 8.15E+00| 3.28E+01 I 1.29E+01 I 2.43E+01
"<" Indicates activity of sample is less than LLD given in uCi/mI
LASALLE COUNTY NUCLEAR POWER STATIONEFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
LIQUID RELEASESUNIT I and UNIT 2
SUMMATION OF ALL LIQUID RELEASES
Estimated4th Qtr Total Error %I Units I 1st Qtr I 2nd Qtr I 3rd Qtr I
A. Fission and Activation Products
1. Total Activity Released Ci <LLD <LLD <LLD <LLD N/A2. Average Concentration Released uCi/mi <LLD <LLD <LLD <LLD,
3. Percent of Applicable Limit IB. Tritium
1. Total Activity Released J Ci <LLD, <LLD <LLD | <LLD, N/A2. Average Concentration Released uCi/ml <LLD <LLD | <LLD |<LLD3. Percent of Applicable Limit | _ __ 1 I * 1
C. Dissolved Noble Gases
I. Total Activity Released Ci <LLD <LLD <LLD <LLD N/A2. Average Concentration Released uCi/ml <LLD <LLD <LLD <LLD3. Percent of Applicable Limit I _*
D. Gross Alpha
1. Total Activity Released (estimate) Ci <LLD <LLD <LLD <LLD N/A2. Average Concentration Released uCi/mi <LLD, <LLD <LLD <LLD3. Percent of Applicable Limit I
|E. Volume of Liquid Waste to Discharge liters 0.OOE+00 0.OOE+0| 0.OOE+00 0.00E+00 N/A
IF. Volume of Dilution Water liters |0.00E+00 |.OO .E+00 |00.OOE+00 N/A
"*" This information is contained in the Radiological Impact on Man section of the report."<" Indicates activity of sample is less than LLD given in uCi/mI
LASALLE COUNTY NUCLEAR POWER STATION
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)* LIQUID RELEASES
UNIT I and UNIT 2BATCH MODE
|Nuclides From Batch Releases Units I1st Qtr I 2nd Qtr I 3rd Qtr I 4th Qtr
H-3 Ci <LLD <LLD <LLD <LLD
Cr-51 Ci <LLD <LLD <LLD <LLD
Mn-54 Ci <LLD <LLD <LLD <LLD
Fe-55 Ci <LLD <LLD <LLD <LLD
Co-58 Ci <LLD <LLD <LLD <LLD
Fe-59 Ci <LLD <LLD <LLD <LLD
Co-60 Ci <LLD <LLD <LLD <LLD
Zn-65 Ci <LLD <LLD <LLD <LLD
Sr-89 Ci <LLD <LLD <LLD <LLD
Sr-90 Ci <LLD <LLD <LLD <LLD
Nb-95 Ci <LLD <LLD <LLD <LLD
Zr-95 Ci <LLD <LLD <LLD <LLD
Mo-99 Ci <LLD <LLD <LLD <LLD
Tc-99m Ci <LLD <LLD <LLD <LLD
Ag-110mn Ci <LLD <LLD <LLD <LLD
Sb-122 Ci <LLD <LLD <LLD <LLD
Sb-124 Ci <LLD <LLD <LLD <LLD
1-131 Ci <LLD <LLD <LLD <LLD
Cs-134 Ci <LLD <LLD <LLD <LLD
Cs-137 Ci <LLD <LLD <LLD <LLD
Ba\La-140 Ci <LLD <LLD <LLD <LLD
Ce-141 Ci <LLD <LLD <LLD <LLD
Ce-144 Ci <LLD <LLD <LLD <LLD
W-187 Ci <LLD <LLD <LLD <LLD
TOTAL Ci None None None None
Xe-131 m Ci <LLD <LLD <LLD <LLD
Xe-133 Ci <LLD <LLD <LLD <LLD
Xe-133m Ci <LLD <LLD <LLD <LLD
Xe-135 Ci <LLD <LLD <LLD <LLD
Xe-135m. Ci <LLD <LLD <LLD <LLD
TOTAL Ci None None None None
"<" Indicates activity of sample is less than LLD given in uCi/mI
LASALLE COUNTY NUCLEAR POWER STATIONEFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
LIQUID RELEASESUNIT 1 and UNIT 2
CONTINUOUS MODE
|Nuclides From Continuous Releases Units 1st Qtr 2nd Qtr 3rd Qtr I 4th Qtr
Gross Alpha Ci <I.OOE-07 <I.OOE-07 <I.OOE-07 <I.OOE-07
H-3 Ci < I.OOE-05 <I.OOE-05 <I.OOE-05 <1.OOE-05
Cr-51 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Mn-54 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.00E-07
Fe-55 Ci <I1.OOE-06 <I.OOE-06 <I.OOE-06 <11.OOE-06
Co-58 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.00E-07
Fc-59 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Co-60 Ci <5.00E-07 <5.OOE-07 <5.00E-07 <5.OOE-07
Zn-65 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.00E-07
Sr-89 Ci <5.OOE-08 <5.OOE-08 <5.OOE-08 <5.OOE-08
Sr-90 Ci <5.OOE-08 <5.OOE-08 <5.OOE-08 <5.OOE-08
Nb-95 Ci <5.OOE-07 <5.OOE-07 <5.00E-07 <5.OOE-07
Zr-95 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Mo-99 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Tc-99m Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Ag- 1Oim Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Sb- 122 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Sb- 124 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
1-131 Ci <I.OOE-06 <I.OOE-06 <I.OOE-06 <I.OOE-06
Cs-134 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Cs-137 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
Ba\La-140 Ci <5.OOE-07 <5.00E-07 <5.OOE-07 <5.OOE-07
Ce-141 Ci <5.OOE-07 <5.00E-07 <5.OOE-07 <5.00E-07
Cc- 144 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
W-187 Ci <5.OOE-07 <5.OOE-07 <5.OOE-07 <5.OOE-07
TOTAL Ci <LLD <LLD <LLD <LLD
Xe-131 m Ci <I.OOE-05 <I1.OOE-05 <i.OOE-05 <I.OOE-05
Xe-133 Ci <I1.OOE-05 <I1.OOE-05 <I.OOE-05 <I.OOE-05
Xe-133m Ci <I .OOE-05 <I .OOE-05 <I .OOE-05 <I .OOE-05
Xe-135 Ci <I.OOE-05 <I.OOE-05 <I.OOE-05 <I.OOE-05
Xe-135m Ci <1.OOE-05 <I.OOE-05 <I.OOE-05 <1.OOE-05
TOTAL Ci <LLD <LLD <LLD <LLD
"<" Indicates activity of sample is less than LLD given in uCi/mI
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
SOLID WASTE AND IRRADIATED FUEL SHIPMENTS
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)SOLID WASTE AND IRRADIATED FUEL SHIPMENTS
FIRST QUARTER
A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL
1. Spent resins, filter sludges,evaporator bottoms, etc.
a. Quantity shipped cu.m. 0.OOE+00
b. Total activity Ci 0.00E+00
c. Major nuclides (estimate %) N/A
d. Shipment type N/A
2. Dry compressible waste,contaminated equipment, etc.
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001ODCM SOFTWARE VERSION 1.1 January 1995ODCM DATABASE VERSION 1.1 January 1995
LASALLE STATION UNIT ONE
2004 ANNUAL REPORTPROJECTED DOSE AT NEAREST COMMUNITY WATER SYSTEM *
PERIOD OF RELEASE - 01/01/04 TO 12/31/04 CALCULATED 01/03/05INFANT RECEPTOR
DOSE TYPE1ST
QUARTERJAN-MAR
2NDQUARTERAPR-JUN
3RDQUARTERJUL-SEP
4THQUARTEROCT-DEC
ANNUAL
TOTAL 0.OOE+00 0.OOE+00 0.OOE+00BODYINTERNAL 0.OOE+00 0.OOE+00 0.OOE+00ORGAN
THIS IS A REPORT FOR THE CALENDAR YEAR 2004
COMPLIANCE STATUS - 40 CFR 141
0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00
TYPE
TOTALBODYINTERNALORGAN
IANNUAL LIMIT
4.0 MREM
4.0 MREM
t OF LIMIT
0.000
0.000
* THIS CALCULATION OF DOSE IS BASED ON TECHNIQUES DESCRIBED IN THECOMMONWEALTH EDISON OFFSITE DOSE CALCULATION MANUAL. THESE TECHNIQUES DIFFERFROM THOSE DESCRIBED IN 40 CFR 141.
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001ODCM SOFTWARE VERSION 1.1 January 1995ODCM DATABASE VERSION 1.1 January 1995
LASALLE STATION UNIT ONE
ACTUAL 2004MAXIMUM DOSES (MREM) RESULTING FROM
PERIOD OF RELEASE - 01/01/04 TO 12/31/04CHILD RECEPTOR
AQUATIC EFFLUENTS
CALCULATED 01/03/05
DOSE TYPE
TOTALBODYINTERNALORGAN
1STQUARTERJAN-MAR
2NDQUARTERAPR-JUN
3RDQUARTERJUL-SEP
4THQUARTEROCT-DEC
ANNUAL
0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00 0.OOE+00
0.OOE+00 0.0E+00 0.OOE+00
THIS IS A REPORT FOR THE CALENDAR YEAR 2004
COMPLIANCE STATUS - 10 CFR 50 APP. I
------------ % OF APP I. ------------
QTRLY 1ST QTR 2ND QTR 3RD QTR 4TH QTR
OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC
YRLY % OF
OBJ APP. I
3.0 0.00
10.0 0.00
TOTAL BODY (MREM) 1.5
CRIT. ORGAN(MREM) 5.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001ODCM SOFTWARE VERSION 1.1 January 1995ODCM DATABASE VERSION 1.1 January 1995
LASALLE STATION UNIT ONE
2004 ANNUAL REPORT
PROJECTED DOSE AT NEAREST COMMUNITY
PERIOD OF RELEASE - 01/01/04 TO 12/31/04
CHILD RECEPTOR
WATER SYSTEM *CALCULATED 01/03/05
DOSE TYPE
TOTALBODYINTERNALORGAN
1STQUARTERJAN-MAR
2NDQUARTERAPR-JUN
3RDQUARTERJUL-SEP
4THQUARTEROCT-DEC
ANNUAL
0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00
THIS IS A REPORT FOR THE CALENDAR YEAR 2004
COMPLIANCE STATUS - 40 CFR 141
TYPE
TOTAL
BODY
INTERNAL
ORGAN
ANNUAL LIMIT
4.0 MREM
4.0 MREM
% OF LIMIT
0.000
0.000
* THIS CALCULATION OF DOSE IS BASED ON TECHNIQUES DESCRIBED IN THE
COMMONWEALTH EDISON OFFSITE DOSE CALCULATION MANUAL. THESE TECHNIQUES DIFFER
FROM THOSE DESCRIBED IN 40 CFR 141.
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0
ODCM SOFTWARE VERSION 1.1
ODCM DATABASE VERSION 1.1
MAY 2001
January 1995
January 1995
LASALLE STATION UNIT ONE
ACTUAL 2004MAXIMUM DOSES (MREM) RESULTING FROM AQUATIC EFFLUENTS
PERIOD OF RELEASE - 01/01/04 TO 12/31/04 CALCULATED 01/03/05TEENAGER RECEPTOR
RESULTS BASED UPON: ODCM ANNEX REVISIONODCM SOFTWARE VERSIONODCM DATABASE VERSION
3.0 MAY 20011.1 January 19951.1 January 1995
LASALLE STATION UNIT ONE
2004 ANNUAL REPORTPROJECTED DOSE AT NEAREST COMMUNITY
PERIOD OF RELEASE - 01/01/04 TO 12/31/04TEENAGER RECEPTOR
WATER SYSTEM *CALCULATED 01/03/05
DOSE TYPE1ST
QUARTERJAN-MAR
2NDQUARTERAPR-JUN
3RDQUARTERJUL-SEP
4THQUARTEROCT-DEC
ANNUAL
TOTALBODYINTERNALORGAN
O.00E+00 0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00 0.OOE+00
0.OOE+00 O.OOE+00
0.00E+00 0.OOE+00
THIS IS A REPORT FOR THE CALENDAR YEAR 2004
COMPLIANCE STATUS - 40 CFR 141
TYPE
TOTALBODYINTERNALORGAN
ANNUAL LIMIT
4.0 MREM
4.0 MREM
% OF LIMIT
0.000
0.000
* THIS CALCULATION OF DOSE IS BASED ON TECHNIQUES DESCRIBED IN THECOMMONWEALTH EDISON OFFSITE DOSE CALCULATION MANUAL. THESE TECHNIQUES DIFFERFROM THOSE DESCRIBED IN 40 CFR 141.
RESULTS BASED UPON: ODCM ANNEX REVISIONODCM SOFTWARE VERSIONODCM DATABASE VERSION
3.0 MAY 20011.1 January 19951.1 January 1995
LASALLE STATION UNIT ONE
ACTUAL 2004MAXIMUM DOSES (MREM) RESULTING FROM AQUATIC EFFLUENTS
PERIOD OF RELEASE - 01/01/04 TO 12/31/04 CALCULATED 01/03/05ADULT RECEPTOR
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001ODCM SOFTWARE VERSION 1.1 January 1995ODCM DATABASE VERSION 1.1 January 1995
. - - .1i
I
LASALLE STATION UNIT ONE
2004 ANNUAL REPORTPROJECTED DOSE AT NEAREST COMMUNITY WATER SYSTEM *
PERIOD OF RELEASE - 01/01/04 TO 12/31/04 CALCULATED 01/03/05
DOSE TYPE1ST
QUARTERJAN-MAR
ADULT RECEPTOR
2ND 3RDQUARTER QUARTERAPR-JUN JUL-SEP
4THQUARTEROCT-DEC
ANNUAL
TOTALBODYINTERNALORGAN
0.OOE+00 0.OOE+00 0.OOE+O0
0.OOE+00 0.OOE+00 0.OOE+00
THYROID
0.OOE+00 0.OOE+00
0.OOE+00 0.OOE+00
THYROID
THIS IS A REPORT FOR THE CALENDAR YEAR 2004
COMPLIANCE STATUS - 40 CFR 141
TYPE
TOTALBODYINTERNALORGAN
ANNUAL LIMIT
4.0 MREM
4.0 MREM
% OF LIMIT
0.000
0.000
* THIS CALCULATION OF DOSE IS BASED ON TECHNIQUES DESCRIBED IN THECOMMONWEALTH EDISON OFFSITE DOSE CALCULATION MANUAL. THESE TECHNIQUES DIFFERFROM THOSE DESCRIBED IN 40 CFR 141.
RESULTS BASED UPON: ODCM ANNEX REVISIONODCM SOFTWARE-VERSIONODCM DATABASE VERSION
STATION: LASALLE STATIONUNIT: 1PERIOD: 01/01/04 12/31/04NAME: ODCMLASREPORT: ANNUALMODE: ACTUAL
For ADULT dose calculations, the included pathways are:INHALATIONMILKPRODUCEVEGETABLESMEATGROUND DEPOSITIONFISHWATERSKYSHINEWHOLE BODY
Airborne Effluents are complete from 01/01/04 to 12/31/04Aquatic Effluents are complete from 01/01/04 to 12/31/04Skyshine entries are complete from 01/01/04 to 12/31/04
LASALLE STATION UNIT ONE
10 CFR 20 COMPLIANCE ASSESSMENT
PERIOD OF ASSESSMENT 01/01/04 TO 12/31/04
CALCULATED 03/06/05
1. 10 CFR 20.1301 (a)(1) Compliance
Total Effective Dose Equivalent, mrem/yr 4.85E-01
10 CFR 20.1301 (a)(1) limit mrem/yr 100.0
% of limit 0.49
Compliance Summary - 10CFR20
1st 2nd 3rd 4th % ofQtr Qtr Qtr Qtr Limit
TEDE 9.20E-02 1.36E-01 1.26E-01 1.31E-01 0.49
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001ODCM SOFTWARE VERSION 1.1 January 1995ODCM DATABASE VERSION 1.1 January 1995
LASALLE STATION UNIT ONE
10 CFR 20 COMPLIANCE ASSESSMENT
PERIOD OF ASSESSMENT 01/01/04 TO 12/31/04
CALCULATED 03/06/05
2. 10 CFR 20.1301 (d)/40 CFR 190 Compliance
Dose(mrem)
Whole Body Plume 1.46E-01
(DDE) Skyshine 3.24E-01
Ground 8.99E-04
Total 4.71E-01
Limit % of(mrem) Limit
25.0 1.89
Organ Dose
(CDE)
Thyroid
Gonads
Breast
Lung
Marrow
Bone
Remainder
1.19E-01
1.07E-02
1.07E-02
1.07E-02
1.08E-02
1.08E-02
1.10E-02
75.0
25.0
25.0
25.0
25.0
25.0
25.0
0.16
0.04
0.04
0.04
0.04
0.04
0.04
CEDE 1.40E-02
TEDE 4.85E-01 100.0 0.49
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001
STATION: LASALLE STATIONUNIT: 2PERIOD: 01/01/04 12/31/04NAME: ODCMLASREPORT: ANNUALMODE: ACTUAL
For ADULT dose calculations, the included pathways are:INHALATIONMILKPRODUCEVEGETABLESMEATGROUND DEPOSITIONFISHWATERSKYSHINEWHOLE BODY
Airborne Effluents are complete from toAquatic Effluents are complete from toSkyshine entries are complete from 01/01/04 to 12/31/04
LASALLE STATION UNIT TWO
10 CFR 20 COMPLIANCE ASSESSMENT
PERIOD OF ASSESSMENT 01/01/04 TO 12/31/04
CALCULATED 03/06/05
1. 10 CFR 20.1301 (a)(1) Compliance
Total Effective Dose Equivalent, mrem/yr
10 CFR 20.1301 (a)(1) limit mrem/yr
% of limit
3.53E-01
100. 0
0.35
Compliance Si
lst 2ndQtr Qtr
8.91E-02 8.60E-02
immary - 10CFR20
3rd 4thQtr Qtr
8.81E-02 8.94E-02
% ofLimit
0.35TEDE
RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001
ODCM SOFTWARE VERSION 1.1 January 1995
ODCM DATABASE VERSION 1.1 January 1995
LASALLE STATION UNIT TWO
10 CFR 20 COMPLIANCE ASSESSMENT
PERIOD OF ASSESSMENT 01/01/04 TO 12/31/04
CALCULATED 03/06/05
2. 10 CFR 20.1301 (d)/40 CFR 190 Compliance
Dose(mrem)
Whole Body Plume 0.OOE+00
(DDE) Skyshine 3.53E-01
Ground 0.OOE+00
Total 3.53E-01
Limit t of(mrem) Limit
25.0 1.41
Organ Dose
(CDE)
Thyroid
Gonads
Breast
Lung
Marrow
Bone
Remainder
0.0OE+00
0.OOE+00
0.OOE+00
0. OOE+00
0. OOE+00
0. OOE+00
0.OOE+00
75.0
25.0
25.0
25.0
25.0
25.0
25.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
CEDE 0.OOE+00
TEDE 3.53E-01 100.0 0.35
RESULTS BASED UPON: ODCMODCMODCM
ANNEX REVISION 3.0 MAY 2001SOFTWARE VERSION 1.1 January 1995DATABASE VERSION 1.1 January 1995
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2004)
METEOROLOGICAL DATA
MURRAY & TRETTEL, INC.
Wednesday February2nd, 2005
Mr. MiWe MartinRad ProtectionLaSalle StationExelon Nuclear2601 N 215 RoadMirseilles, IL 61341
DearMr. Martin.
Enclosed are copies of the LaSalle Station meteorological site quarterlyjoint-frequency windrose tables for 2004. They are being sent pursuant to the Specification for MeteorologicalData and Meteorological Monitoring Services & Maintenance (METI), 3.3.2,333,METSPECS/18/15 and METSPECS/18/41, Table 2a, format of wind rose table.
At this time, we would lie to request the 2004 effluent data for yur nuclear plant. Theeffluent data is required to process the 2004 annual report on the Meteorological MonitoringProgram as per Specification No. MET1 33.4.
In order to expedite the annual report generation, please forward the 2004 effluent datafrom your plant to:
* TomrBegleyMaray m rettel, Inc600 Ffrst Bank Drive, Suite APalatine, IL 60067
Fax. ''1-847-963-0003or
E-maiLmt(weathercommand.com
If you have any questions, please contact Tom Begley@ (847) 963-9000 x 175.
Sincrely
Tom BegleExelon Nuclear Project Manager
Enclosures
600 FIREST BANK DRIVE, SUITE A * PALATINE, IL * 60067PHONE: (847) 963.9000 * FAX: (847) 963-0003
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
-j
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Slightly Unstable - 200Ft-33Ft
Winds Measured at 33 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24
N 0 0 4 1 0
NNE 0 0 . 1 0 0
NE 0 0 1 0 0
ENE 0 0 1 1 0
-E 0 0 3 1 0
ESE 0 0 2 1. 0
SE 0 1 1 0 0
SSE 0 0 0 0 .0
S 0 0 0 . 0 3
SSW 0 1 3 0 0
SW 0 0 1 3 2
WSW 0 0 3 0 1
W 0 0 5 6 1
WNW 0 0 4 8 1
NW 0 0 1 3 3
NNW 0 0 1 2 0
Variable 0 0 0 0 0
Delta-T (F)
> 24
0
0
0
0
0
0
0
1
1
0
0
2
1
1
0
0
_ 6
Total_____
5
1
1
2
4
3
2
0
4
5
6
4
14
14
8
3
0
76Total 0 2 31 26 11
* Hours of calm in this stability class:Hours of missing wind measurements in thisHours of missing stability measurements in
0stability class: .0all stability classes: 0
LaSalle-Nuclear Station
Period of Record: January - March 2004Stability Class - Neutral - 200Ft-33Ft Delta-T (F)
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Slightly Stable - 200Ft-33Ft Delta-T (F)
Winds Measured at 33 Feet
Wind Speed (in mph)Wind, 4
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N 3 11 11 2 0 0 27
NNE 1 i5 10 4 0 0 30
NE 1 5 4 6 5 0 21
ENE 1 0 10 32 3 0 46
E 0 2 22 16 1 0 41
ESE 0 6 5 4 0 0 15
SE 2 8 13 16 0 0 39
SSE 2 5 12. 14 0 0 33
S 2 7 11 14 ,8 3 45
SSW 1 2 13 33 7 9 65
SW . 1 4 14 26 7 3 55
WSW 1 1 11 19 10 1 43
W 3 15 27 33 13 0 91
WNW 0 16 35 11 9 2 73
NW .2 8 21 7 0 0 38
NNW 2 13 4 16 0 0 35
Variable 0 0. 0 0 0 0 0
Total 22 118 223 253 63 18 697
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle.Nuclear Station
Period of Record: January - March 2004Stability Class - Moderately Stable - 200Ft-33Ft Delta-T (F)
Winds Measured at 33 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 .8-12 13-18 19-24 > 24 Total
N 0 2 0 0 0 0 2
NNE 0 0 0 0 0 0 0
NE 0 0 0 2 0 0 2
ENE 0 0 1 0 4 0 5
E 0 1 6 3 0 0 10
ESE 0 14 11 0 0 0 25'
.SE 3 5 7 2 . 0 0 17
SSE. 0 6 . 8 5 0 0 19
S 0 12 15 4 0 1 32
SSW 0 3 21 11 0 0 35
SW 0 8 10 13 0 0 31
WSW 0 9 16 13 0 0 38
W 0 5 23 4.. 0 0 32
WNW 0 8 5 5. 0 . 0 18
NW 1 6 2- 0 0 0 9
NNW 0 0 0 0 0 0 0
Variable . 0 0 0 0 0 0 0
Total 4 79 125 62 4 1 275
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability-class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Extremely Unstable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 4
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 4
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Slightly Unstable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: .Hours of missing wind measurements in thisHours of missing stability measurements in
0 ' .stability class: 9all stability classes: 4
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Slightly Stable - 375Ft-33Ft Delta-T (F)
Winds Measured at 375 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N 1 2 6 9 0 0 18
NNE 0 1 7 7 1 0 16
NE 0 1 2 7 0 0 10
ENE 0 4 5 4 2 3 18
E 0 2 6 8 6 1 23
ESE . 1 3 4 8 4 8 28
SE 0 4 0 3 2 16 25
SSE 0 3 1 8 4 16 32
S 6 3 2 6 16 19 52
SSW 0 0 5 5 13 52 75
SW 3 1 3 13 11 35 66
WSW 0 1 4 5 11 24 45
W 0 4 5 3 22 41- 75
WNW 1 6 5 12 24 20 68
NW 1 5 5 12 15 2 40
NNW .0 3 1 7 1 0 12
Variable 0 0 0 0 . 0 0 0
Total 13 43 61 117 132 237 603
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 5Hours of missing stability measurements in all stability classes: 4
------
LaSalle Nuclear Station
Period of Record: January - March 2004Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 4
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Extremely Unstable - 200Ft-33Ft Delta-T (F)
Hours of calm in this stability class:Hours of missing wind measurements in thisHours of missing stability measurements in
0stability class: 0all stability classes: 0
LaSalle.Nuclear Station
Period of Record: April - June 2004Stability Class - Moderately Unstable - 200Ft-33Ft Delta-T (F)
Winds Measured at 33 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N . 0 0 3 2 1 0 6
NNE 0 0 8 1 0 0 9
NE 0 0 0 5 0 0 5
ENE 0 0 0 1 0 0 1
E 0 0 0 0 0 0 0
ESE 0 0 0 2 0 .0 2
SE 0 0 1 0 0 0 1
SSE 0 0 0 1 0 0 1
S 0 0 . 0 2 0 0 2
SSW 0 0 1 6 4 3 14
SW 0 2 1 10 5 2 20
WSW 0 2 2 8 3 1 16
W 0 0 8 S 1 1 15
WNW .0 2 8 1 0 . 1 12
NW 0 0 2 2 0 0 4
NNW 0 0 1 5 0. 0 6
Variable 0 0 0 0 0 0 0
Total 0 6 35 51 14 8 114
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Slightly Unstable - 200Ft-33Ft Delta-T (F)
Hours of calm in this stability class: . 0 .Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 100
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: . . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all'stability classes: 100
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Neutral - 375Ft-33Ft Delta-T (F)
Winds Measured at 375 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N 2 8 27 25 7 9 78
NNE 1 8 39 19 4 1 72
NE 0 8 17 21 29 12 87
ENE 0 10 9 12 14 13 58
E 0 1 10 15 8 1 35
ESE 3 5 5 6 9 3 31
SE 0 2 9 13 4 6 34
SSE 0 1 8 4 2 3 18
S 0 7 12 8 4 5 36
SSW 0 4 .6 .10 16 33 69
SW 0 4 21 31 25 40 121
WSW . 0 9 18 17 29 31 104
W 0 6 22 19. 8 11. 66
WNW 1 6 27 21 8 13 76
NW 0 13 19 20 7 10 69
NNW .0 8 18 27 9 6 68
Variable 0 0 0 0 0 0 0
Total 7 100 267 268 183 197 1022
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 100
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Slightly Stable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class:Hours of missing wind measurements in thisHours of missing stability measurements in
0stability class: 1all stability classes: 100
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)
Winds Measured at 375 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N 0 0 2 4 0 0 6
NNE 0 0 3 3 0 0 6
NE 0 2 2 1 0 0 5
ENE 0 0 2 0 0 0 2
E 0 0 1 1 0 0 2
ESE 1 1 6 4 2 0 14
SE 0 1 3 3 0 0 7
SSE 0 1 3 0 1 0 5
S 0 0 1 5 6 7 19
SSW 1 2 1 5 4 16 29
SW 0 0 1 3 6 15 25
WSW . 1 2 3 7 8 3 24
W 0 2 0 8 5 7 22
WNW . 0 2 3 8 7 2 22
NW 0 0 2 5 5 0 12
NNW 0 0 3 3 0 0 6
Variable 0 0 0 0 . 0 0 0
Total 3 13 36 60 44 50 206
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 1Hours of missing stability measurements in all stability classes: 100
LaSalle Nuclear Station
Period of Record: April - June 2004Stability Class - Extremely Stable - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: October - IStability Class - Slightly Unstable
Hours of calm in this stability class: .. 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: October - IStability Class - Moderately Stable
Hours of calm in this stability class: . 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 0
LaSalle Nuclear Station
Period of Record: October - December2004Stability Class - Extremely Unstable - 375Ft-33Ft
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 11
LaSalle Nuclear Station
Period of Record: October - December2004Stability Class - Slightly Unstable. - 375Ft-33Ft Delta-T (F)
Hours of calm in this stability class:Hours of missing wind measurements in thisHours of missing stability measurements in
0stability class: 0all stability classes: 11*
- - m
LaSalle Nuclear Station
Period of Record: October - December2004Stability Class - Extremely Stable -.375Ft-33Ft Delta-T (F)
Winds Measured at 375 Feet
Wind Speed (in mph)Wind
Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total
N 0 0 0 0 0 0 0
NNE 0 0 0 0 0 0 0
NE 0 0 0 0 0 0 0
ENE 0 0 0 0 0 0 0
E 0 0 0 1 0 0 1
ESE 0 0 0 0 2 0 2
SE 0 0 0 3 0 0 3
SSE 0 0 0 3 3 2 8
S 0 0 1 5 , 8 5 19
SSW 0 0 3 3 12 8 26
SW 0 0 0 3 0 9 12
WSW 0 0 1 4 3 6 14
W 0 0 1 2-. 1 1 5
WNW 0 1 0 0 1 . 1 3
NW 0 0 1 1 1 0 3
NNW 0 0 0 0 0 0 0
Variable 0 0 0 0 .0 0 0
Total 0 1 7 25 31 32 96
Hours of calm in this stability class: 0Hours of missing wind measurements in this stability class: 0Hours of missing stability measurements in all stability classes: 11