View source for RBG-25845, Radiological Environ Operating Rept,River Bend Station,For Operating Period Jan-Dec 1986

{{Adams
| number = ML20215J637
| issue date = 12/31/1986
| title = Radiological Environ Operating Rept,River Bend Station,For Operating Period Jan-Dec 1986
| author name = Booker J, Conner J, Harrington M
| author affiliation = GULF STATES UTILITIES CO.
| addressee name = 
| addressee affiliation = NRC OFFICE OF ADMINISTRATION &amp; RESOURCES MANAGEMENT (ARM)
| docket = 05000458
| license number = 
| contact person = 
| document report number = RBG-25845, NUDOCS 8705080178
| document type = ENVIRONMENTAL MONITORING REPORTS(&amp;RADIOLOGICAL)-PERIODIC, TEXT-ENVIRONMENTAL REPORTS
| page count = 43
}}

=Text=
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RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT RIVER BEND STATION FOR THE OPERATING PERIOD January 1, 1986 - December 31, 1986 s
Prepared by:
[/        .
Michael A. Hafr~ingtotO Sr. Rad. Environmental Analyst Reviewed by:                                                                                    Approved by:
20Q1                                                     WfktthW 4 ~ 2L)?
;.              Jain V. Connor                                                                                   Thomas F. Plunkett Su pvr. - Environmental Services                                                                 Plant Manager                         ,.
Y evie s     x          i                   A/1llt'l Eddin M. Cargill                           /'&
Supvr. - Radiological Programs e
B         DOC                pD Sk -

            .=
        .                                        RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 TABLE OF CONTENTS

==1.0    INTRODUCTION==
 .................................................                                        1 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)                                  .........          4 2.1   Purpose / Bases ..............................................                                     '4 2.2- Environmental Radiation Exposure Pathways ..................                                         4 2.3 Land Us e ' Cen sus fo r 198 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4 Interlaboratory Comparison Program Results for 1986 . . . . . . . .                                   5 2.5   Program Exceptions .........................................                                       16 3.0 INTERPRETATION OF REMP RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            19 3.1   Summa ry o f Operational REMP Re sults . . . . . . . . . . . . . . . . . . . . . . . .             19 3.2 Comparison of Operational and Baseline REMP Results ........- 26 3.3 Comparison of REMP Results with Operational Controls . . . .. . . 27 APPENDICES A. Summary of Preoperational REMP (Baseline) Results B. Summary of Observations Related to the Chernobyl Accident i

s 9.
* RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 LIST OF FIGURES Page Figure 1. Far-field Radiological Environmental Monitoring Locations ............................             2 Figure 2. Near-field Radiological Environmental Monitoring Locations ............................             3 LIST OF TABLES Page Table 1. Radiological Environmental Monitoring Program . . .           6
                                            ~
Table 2. Results of Land Use Census ......................            14 Table 3. USEPA Intercomparison (Cross-check) Program Participation Results for 1986 ..................            15 Table 4. Monitoring Program Exceptions in 1986 . . . . . . . . . . . 17 Table 5. Radiological Environmental Monitoring Program Summary..........................................            20 l
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        .                              RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 4

==1.0 INTRODUCTION==

This Annual Radiological Environmental Operating Report for the period of January 1 through December 31, 1986, is submitted in accor-dance with Technical Specification 6.9.1.7 of Appendix A to River Bend Station License Number NPF-47.
River Bend Station (RBS) is a 936 MWe General Electric boiling water reactor located in West Feliciana Parish, Louisiana, 4.1 km south-east of St. Francisville (Figure 1). Waste heat from RBS is dissipated via a closed cycle system using four mechanical draf t cooling towers which draw makeup water from the Mississippi River, 3.3 (air) km to the west. Blowdown from the normal cooling tower system dilutes low-level liquid radioactive waste and is discharged to the Mississippi River through a 4.4-km buried pipe located downstream of the intake structure (Fig. 2). Gaseous radioactive effluents are released through the Main Plant Exhaust Duct, the Fuel Building Exhaust Duct, and the Radwaste Building Exhaust Duct.
The area within a 16-km radius of RBS includes substantial portions of West Feliciana, East Feliciana, and Pointe Coupee parishes, as well as small portions of East and West Baton Rouge parishes. Most of the land in this area is devoted, in about equal proportions, to forests and agriculture (pasture, various crops). Wetlands, streams / lakes, and urban / improved lands comprise the remainder of the immediate vicinity of the plant. Besides St. Francisv111e (4.1 km northwest), human popula-tion centers near RBS are New Roads (10 km southwest) and Jackson (12 km northeast) . Industrial facilities in the immediate vicinity of RBS are Lam ~oert Redi-Mix Company (1.8 km north-northeast); Crown-Zellerbach Paper Mill (5 km south); Big Cajun No. 2 Power Station (5 km southwest);
and the Corps of Engineers concrete casting yard (5 km west).
The area within an 80-km radius of RBS contains portions or all of 19 Louisiana parishes and five Mississippi counties. This area has generally the same makeup as that of the immediate vicinity of RBS, al-though wetlands, agricultural lauds, and urban / improved lands are rela-tively more extensive (at the expense of forested lands) in the south-western and southeastern quadrants.      Baton Rouge, centered at about 38 km southeast, is the only large city in the general vicinity of RBS.
During 1986, radiological environmental monitoring in the vicinity of RBS was performed by the Gulf States Utilities Company (GSU) Environ-mental Services Group, with support from the Plant Staf f Radiological Programs Section and an of fsite contractor, Eberline Analytical Ser-vices.
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o                                                                  RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 2.0 RADIOLOGICAL ENVIR0_NMENTAL MONITORING PROGRAM (REMP) 2.1 Purpose / Bases The Radiological Environmental Monitoring Program (REMP) was esta-blished to provide representative measurements of radiation and of radi-oactive materials, resulting from RBS operation, in those exposure path-ways and for those radionuclides that lead to the highest potential ex-posures of members of the public. The REMP implements Section IV.B.2 of Appendix I to 10CFR50 and thereby supplements the radioactive effluent monitoring program by verifying that the measurable concentrations of radioactive materials and levels of radiation are not higher than ex-pected on the basis of the effluent measurements and the modeling of the environmental exposure pathways.
The REMP applies the concepts of indicator-control and preopera-tional-operational intercomparisons to establish the adequacy of envi-ronmental levels and resultant human radiation doses. In addition to                                                                                                                       _
                                                                                                                                                                                                         ~
10CFR50, Appendix I, the program is based on guidance provided in the Nuclear Regulatory Commission's Radiological Branch Technical Position, Revision 1, November 1979, as well as Regulatory Guides 4.1 and 4.15.                                                                                                                      =
2.2 Environmental Radiation Exposure Pathways Elements of the REMP monitor indications of the impacts of gaseous (airborne) and liquid effluents released from River Bend Station. The specific methods used in monitoring the pathways by which these efflu-ents could lead to human exposure, based un existing demographic infor-mation, are:
HUMAN EXPOSURE PATHWAYS (A) Airborne Pathway                                                                                                    Monitoring Media Immersion Dose                                                                                                   Air Samples (Particulates and Radiciodines)
Ingestion (Internal) Dose                                                                                         Vegetation / Food Crop Samples Milk Samples Air Samples (B) Direct Exposure Pathway                                                                                             Monitoring Media External Dose                                                                                                      Thermoluminescence Dosimetry (TLD) Area Monitors (C) Waterborne Pathway                                                                                                    Monitoring Media Ingestion (Internal) Dose                                                                                          Surface Water Samples Groundwater Samples Drinking Water Samples Fish / Invertebrate Samples Shoreline Sediment Samples 4

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    ..                              RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 (C) Waterborne Pathway (cont.)            Monitoring Media Immersion (External) Dose           Surface Water Samples Shoreline Sediment Samples Site-related dispersion characteristics, demography, hydrology, land use, anticipated source terms, and the exposure pathways outlined above were considered in the selection of the sample media, sampling and analysis frequencies, sampling / measurement locations, and types of anal-yses. These criteria were used to establish both the preoperational and operational phases of the REMP.
The program that evolved during the preoperational (baseline) moni-toring phase, incorporating all of the elements in the RBS Technical Specifications (3/4.12.1, 3/3.12.2, 3/4.12.3) plus special study cri-teria, is illustrated in Table 1 and Figures 1 and 2.
2.3 Land Use Census for 1986 The annual land use census was conducted from July 30 through Au-gust 30, 1986, in accordance with RBS Technical Specification 3/4.12.2.
Table 2 summarizes the results and notes changes in nearest receptor locations from those identified in the Radiological Environmental Operating Report for 1985.
As in previous years, the 1986 census identified residences within 8 km of the reactor containment in all sectors except L (SW). Distance to the nearest residence in Sector F (ESE) increased from 1.4 to 3.4 km.
Gardens were identified within 8 km of RBS in all sectors except L (SW) and N (W) . Distances to the nearest gardens in sectors E (E), H (SSE),
and M (WSW) decreased. The gardens identified in sectors P (WNW) and Q (NW) are the onsite gardens established in the sectors with the highest calculated annual average ground-level D/Q. These gardens are REMP in-dicator locations for broadleaf vegetation (Table 1, Fig. 2).
No dairy animals were found within 8 km of RBS during the 1986 cen-sus. The McKowen Dairy (Location MF2, Table 1, Fig. 1) suspended opera-tion on July 1, 1986; however, it was used for REMP sampling / analyses through June. Historically, there had never been enough dairy sites to accommodate the minimum RBS Technical Specification requirements for analyses of milk (3 locations within 5 km), so monitoring of broadleaf vegetation had been performed from the outset. Loss of the dairy there-fore did not require a formal change in the REMP.
2.4 Interlaboratory Comparison Program Results for 1986 The Environmental Services Group participated in the U. S. Environ-mental Protection Agency (USEPA) Laboratory Intercomparison Program dur-ing 1986 in accordance with RBS Technical Specification 3/4.12.3. RBS results (Table 3) were near the "known" value, or within the USEPA range of expected laboratory precision for 81 percent of the onalyses.
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RIVER BEND STATION -
RADIGIACICAL ENVIROI0 ENTAL OPERATING REPORT POR 1986                          ,.
TABLE 1 RADIOLOGICAL EIIVIROISEENTAL MONITORINC PROGRAN
                                                                     - (Page 1 of 8)
* Exposure Pathway      Sample Point Description,                                    Sampling and       Type and Frequency-and/or Sample         Distance, and Direction                               Collection Frequency        of Analysis Airborne Particulates Samples from * ' estions:
and Radioiodines INDICATOR STATIONS AA1. River Bend Training-                              Continuous air sampler   Charcoal cartridge:
Center; 1.7 km N.                                     with filter collection    analysis weekly for-weekly or as required by radioiodine.
dust loading,.whichever  Particulate sampler is more frequent.        gross beta activity following filter changes; composite for gasuna isotopic quarterly.
ARI. River Bend Station North Access Road at Cate m                       #3; 0.8 km NNW, API. Near River Bend Station Onsite Carden #13 0.9 km WNW.
AQS2. St. Francis Substation on US Hwy..(Bus.) 61 in St.
Francisville 5.8 km NW (Community Location).
CONTROL AND SPECIAL STATIONS (1)
ALC. Parlange Power Center                                       "                        "-
in Oscar: 20 km SW (Control).
ABl. River Bend Station iron yard are.ag 0.5 km NNE. (1, 2)
AKS, River Bend Station                                          "                       "
River Access Road; 2.8 km SSW. (1, 2)-
ACS. CSU Service Center-                                         "                       "
compound in Zachary; 17 km SE, (1, 2)
AHS. Roof of CSU Service Office                                  "                       "
Building North Blvd., Beton Rouge; 40 km SSE.,(1, 2)
_ _ _ , - _ ,               _ - . -              ._          _-      1_______    _ ______

                                                                                                                             -. . 3 RIVER BEND STATION RADIOIDCICAL ENVIR0letENTAL OPERATING REPORT FOR 1986                  ,
TABLE I RADIOIhCICAL ENVIROId. ENTAL MONITORING PROGRAM (Page 2 of 8)
Exposure athway      Sample Point Description.                        Sampling and-          'ype and Frequency and/or Sample        Distance, and Direction                     Collection Frequency          of Analysis Direction Radiation  Measurements from 44 locations:
INDICAIOR STATIONS TAl. River Bend Training                     Thermoluminescence,        ca-a dose monthly Center; 1.7 km N.                            dosimeters (TLDs);         and quarterly. (3) deployment / retrieval monthly and quarterly. (3)
TA2. CSU utility pole #246-at Jct of LA Hwy.10 and West Feliciana Parish Road (WF) 2 in Elm Park; 8 km N.
TBl. River Bend Station iron yard area; 0.5 km NNE.
u TB2. Stub pole at Jct. LA Hwy.
                       %5 and Audubon Lane (WF 17);
5 km NNE.
TC1. Stub pole at Jct. US Hwy.
61 and Old Highway 61; 1.7 km NE.
TC2. Stub pole along LA Hwy. 966 0.6 km S. of Jct. LA Huys. 966 and 965; 7 km NE.
TDI. . Stub' pole along WF 7. 150 m S. of' Jct. WF 7 and US Swy. 61; 1.6 km ENE.
TD2.. Stub pole along LA Hwy. 966 4 km S. of Jct. LA Hwys. 966 and 965; 6.3 km ENE.
TEl. Stub pole along WF 7. 1 km S. of Jct. WP 7 and US Hwy. 61; 1.3 km E.
                      'TE2. Gravel Power Center on LA Hwy. 68, 2 km N. of Jct. LA Huys.
68 and 964; 10 km E.

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RIVER BEND STATION ,
RADIO 1DGICAL ENVIROBBIENTAL OPERATING REPORT FOR 1986                   ,
TABLE 1.
RADIOLOGICAL ENVIROIStENTAL MONITORING PROGRAM
                                                           '(Page 3 of 8)
Exposure Pathway-  ' Sample Point Deacription. .                      Sampling and            Type and Frequency              _
and/or Saaple        Distance, and Direction                     Collection Frequency           of Analysis Direct Radiation    TFl. Stub pole along WF 7 '                 . Thermoluminescence          t h a dose monthly (continued)          1.6 km S. of Jct. WF 7 and                   dosimeters (TLDs);          and quarterly. (3)
US Hwy. 61; 1.3 km ESE.                       deployment / retrieval monthly and quarterly. (3)'
TF2. McKoven Dairy on LA Hwy.
                       '954, 0.6 km N. of Jct. LA Hwy.
954 and US Hwy, 61; 6 km ESE.
TGl. Stub pole along WF 7 2 km S. of Jct. WF 7 and US Hwy. 61; 1.6 km SE.
TG2. Telephone pole at gate to Marathon Tank Farm on US Hwy.
61 near Delombre; 7.5.km SE.
* THl. Stub pole at Illinois                             "                           "
Central Gulf RR crossing of.
WF 7 (near Grants Bayou);
                         ~1.7 km SSE.
TH2. First, telephone pole on LA Hwy. %4 N. of entrance to Crown-Ze11erbach paper mill; 5.5 km SSE.
TJ1. Stub pole near River Bend                        "                           "
Station Gate f23 on Powell Station Road (LA Hwy. 965); 1.5 km S.
TJ2. Large tree along River Road.                     "                           "
100 m N..of Crown-Ze11erbach intake structure; 5.8 km S.
TKl. GSU utility. pole #L10178 on Powell Station Road (LA Hwy. 965),
20 m S. of River Bend Station River Access Road;.0.9 km SSW.
TK2. Stub pole at Jet.' LA Hwys.                      "                           "
414 and 415; 8 km SSW.

                                                                                              ~
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATINC REPORT IUR 1986                    ,
TABLE 1 RAD 1014CICAL ENVIR0tttENTAL MONITORINC PROGRAM (Paige 4 of 8)                                        '
Exposure Pathway  Sample Point Description.                         Ssapling and            Type and Frequency and/or Sample      Distance, and Direction                    Collection Frequency            of Analysis Direct Radiation  TLI. Second utility pole on                  The'rmoluminscence           Casma dose monthly (continued).      Powell Station Road (LA Hwy.                 dosimeters (TLDs);           and quarterly. (3)
                      %5) S. of Illinois Central                   deployment / retrieval Culf RR crossing;.1.0 km SW.                 monthly and quarterly. (3)
TL2. Second utility pole along LA Hwy. 415 E. of Louisiana and Arkansas RR crossing (naar Patin's Dike); 9.5 km SW.
TNI. First utility pole on Powell Station Road (LA Hwy.
965) N. of Illinois Central Culf RR crossing; 0.9 km WSW.
                                                                             "                             =
TM2. Utility pole along LA Hwy. 981, about 3 km S. of Jct.
LA Hwys. 981 and 10; 4.2 km WSW.
TNI. Utility pole along Powell Station Road (LA Hwy. 965),
between Riv3r Bend Station Cates
                       #13 and #14; 0.9 km W.
TN2. Utility pole with electrical meter near west bank ferry landing (LA Hwy. 10); 6 km W.
TPl. Near River Bend Station Onsite Carden #1; 0.9 km WNW.
TP2. Stub pole about 1.5 km N.
of Illinois Central Culf RR trestle on Tunica Street, western                                                              -
outskirts of St. Francisville; 7.3 km WNW.
TQ1. CSU property sign along Powell Station Road (LA Hwy. 965),                                                                   s about 1 km N. of River Bend Station
                     . North Access Road; 1.4 km NW.
TQ2. CSU pole at Jct. of North Conumerce and American Beauty Streets, St. Francisville; 6.9 km NW.

                                                                     ' RIVER BEND STATION RADIOLOGICAL ENVIR0l#fENTAL OPERATING REPORT FOR 1986                    ,                ,
TABLE 1                                                        -
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRA1 (Page 5 of 8)
Exposure Pathway  Sample Point Description.                      . Sampling and           Type and Frequency
{
and/or Sample      Distance, and Direction                    Collection Frequency          of Analysis Direct Radiation  TRI. River Bend Station                      Thermoluminescence         Camma dose monthly (continued)       North Access Road at Cate                    dosimeters (TLDs);         and quarterly. (3)
                                         #3; 0.8 km NNW.                              deployment / retrieval' monthly and quarterly. (3)
TR2. Stub pole along WF 2 at Jacock Road, about 1.8 km E.'of Jct. WF 2 and US Hwy. 61; 8 km NNW.
CONTROL AND SPECIAL STATIONS (1)
TAC. Telephone pole along US Hwy. 61 about 200 m N. of Hamilton Station Water Tower. near Wakefield; 18 km N (Control).
O                                                                                   "                            "
TEC. Stub pole at Jct. of LA Hwy.
4                                        955 and Midway Road. 4.8 km N. of
                                        . Jct. LA Hwys. 955 and 964; 16 km E.
                                         -(1, 2)
TLC. Parlange Power Center in Oscar; 20 km SW (Control).
TQSt. Behind Pentecostal Church (opposite West Feliciana Hospital) near Jct. US Hwy. 61 and Ferdinand Street; 4 km NW. (1).
TQS2. St. Francis Substation on US Hwy. (Bus.) 61 in St.
Francisv111e; 5.8 km NW.     (1)
,                                         TLS. Utility pole near False River Academy sign at edge of New Roads; 9.9 km SW. .(1)
TCS. Utility pole at gate to East h uisiana State Hospital i                                         in Jackson; 12.3 km NE.   (1) l

RIVER BEND STATION RADIOIACICAL ENVIRONMENTAL OPERATINC REPORT FOR 1986                    ,
TABLE 1 RADIOIDCICAL El 'IRONMENTAL MONITORING PROGRAM (Page 6 of 8)
Exposure Pathway Sample Point Description,                        Sampling and           Type and Frequency and/or Sample    Distance. and Direction                     Collection Frequency          of Analysis Direct Radiation TGS. CSU Service Center                      Ther'uoluminescence        ca= = dose monthly (continued)      compound in Zachary; 17 km SE.               dosimeters (TLDs);         and quarterly. (3)
(1)                                          deployment / retrieval monthly and quarterly. (3)
THS. Roof of CSU Service Office Beilding North Blvd., Baton Rouge; 40 km SSE.    (1)
TES. River B-and Station River Access Road; 2.8 km SSW. (1, 2)
TQS3. Utility pole at Louisiana State Penitentiary dairy, near Angola; 35 km NW. (1, 2)
   "                  TRS. Stub pole at Jct. of WF 2 and US Hwy. 61, near Bains (West Feliciona High School); 9.2 km NNW. (1. 2)
Watsrborne            SURFACE WATER (4)
SWU. Miss'ssippi i       River about 4 km          Weekly grabs composited    Monthly composite:
upstream from the plant liquid               over monthly and           gassa isotopic and
 !                    discharge outfall, near LA Hwy 10            quarterly periods,         gross beta analyses. (5)
!                     ferry crossing.                                                         Quarterly compositet i                                                                                             tritium analysis.
4 SWD. Mississippi River about 4 km downstream from the plant liquid discharge outfall, near paper mill.
Discharge Line. At blowdown control          Hourly grabs composited structure along River Access Road,           monthly and quarterly.
DRINKING WATER (6)
Nearest downstream water supply.             Weekly grabs composited People's Water Service Company in            over monthly and Donaldsonville; 138 river km                 quarterly periods.
downstream from the plant liquid discharge outfall.

J                                                                                                                              R t
RIVER BEND STATION RADIOIDGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 TABLE 1 RADIOLOGICAL y.N"IRONMENTAL MONITORING PROGRAM (Page 7 of d)                       ,
Exposure Pathway Sample Point Description,                         Sampling and           Type and Frequency and/or Sample     Distance, and Direction                     Collection Frequerew          of Analysis Waterborne                CROUNDt'ATER (continued)
WD. Upland Terrace Aquifer                 Quarterly grab.            Cross beta, gamma well downgradient from plant,                                            isotopic and tritium about 470 m SW.                                                          analyses quarterly. (5)
WU. Upland Terrace Aquifer well upgradicat from plant, about 470 m NNE (Control).
SHORELINE SEDIMEh"I SED. East shore of Mississippi                Semiannual grab.           Camma isotopic analysis River about 4 km downstream from                                         semiannually.
plant, near Crown-Ze11erbach paper mill.
  ~
  " Ingestion                   MILK (7)
MF2. McKoven Dairy on LA Hwy.                 Semimonthly when animale   Camma isotopic and 954, 0.6 km N. of Jet. LA Hwy.                on pasture; monthly at     I-131 analyses 954 and US Hwy. 61; 6 kw LSE                  other times.               semimonthly or monthly.
(nearest source of milk for human consumption).
MQC. Louisic.na Stace Penitentiary near Angola; 35 km NW (Control).
FISH AND INVFRTEBRATES FD. One sample of each of                  Semiannually or            Gamma isotopic analysis three commercially and/or                    seasonally when            on edible portions semi-recreationally important species             available.                 annually or seasonally, from downstream area influenced by plant discharge. (8)
FU. One sasple of each of three commercially and/or recreationally important species from upstream area not influenced by pl-nt discharge (Control). (8)

__          .        ~._       _         .       . .- .
v
                                                                                                                                           +
                                                                                                                                             .?
RIVER BEND STATION -
                                               . RADIOLOGICAL ENVIROISENTAL OPERATINC REPORT FOR 1986 .                     ,
                                                                           -TABLE 1                                                             '
RADIOLOGICAL ENVIROISENTAL MONITORING PROGRAM (Page 8 of 8)
* Exposure Pathway                 Sample Point Description.,                           Sampling and            Type and Prequency~
and/or Sample                    Distance, and Direction-                       Collection Frequency            of Analysis Ingestion                               : PRODUCE (9)  '
(continued)                                                                          ..                                           .
01/G2. h o samplac of each of                 ; Monthly during growing      .Camma isotopic and I-131 analyses monthly, three different kinds of leafy                  season.
vegetables from onsite gardens near the site boundary in areas cf highest calculated annu.1 average ground-level D/Qg 1 km '
WNW and 1.3 km NW.
CQC. One sample of each of three                         "                             "
different kinds of leafy vegetables from LA State Penitentiary at" Angolag 35 km NW (Control).
U    NOTES:
(1) For purposes of data summary, comparisons, and discussion, the sampling locations designated as "Special Interest" are treated as indicator stations if they are within 16 km of RBS and control stations if they are beyond 16 km.
(2) Sample /measurerent location not required by RBS Technical Specifications (not identified in 019t).
(3) Sampling and/or analysis frequency greater than required by RBS Technical Specifications and OD'3f.
(4) The upstream (control) sample is taken at 'a distance beyond influence of ,the plant discharge. The downstream (indicator) sample is taken in an area beyond but near the mixing zone.
(5) Cross beta analysis not required by RBS Technical Specifications and ODCM.
(6) Drinking water sampling / analyses not required by RBS Technical Specifications and ODCM. (No drinking water pathusy exists due to extreme distance of nearest intake.). The upstream surface water sampling location (SWU) is used as a:
              " control" for. drinking water analyses comparisons.
(7) If milk-prohciv animals become available within a 5-km radius of the plant, up to' 3 samples from these animals will' be analyzed in lieu of the leafy vegetables from onsite gardens -in high dose-potential areas (see Note 9).
(8) Preferred species are river. shrimp, blue catfish, and freshwater drung if catfish and drum are unavailable, other .
edible species may be substituted.
(9) No irrigation pathway exists due to the extreme distance of nearest domestic water intake (see Note' 6); leafy vegetables are sampled / analyzed because of limited availability of milk samples (see Note .7).

RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 TABLE 2 RESULTS OF LAND USE CENSUS Neares t      Range     Nearest    Range Nearest    Range Sector       Residence     (Km)      Garden     (Km)  Dairy      (Km)
A (N)        Jones          1.8      Toney       2.0     -         -
B (NNE)      Dreher         1.6      Harvey      1.8     -         -
C (NE)       Magee          1.5      Magee       1.5     -         -
D (ENE)      Miller         1.4      Daniel      1.6     -         -
E (E)        Carver         2.2      Carver      2.2     -         -
F (ESE)      Shelton        3.4      Bickham     3.5      -        -
JG (SE)       Mills          6.6      Mills       6.6      -        -
H (SSE)      Koffman        1.7      Koffman     1.7     -         -
J (S)        Bliss          1.8      Bliss       1.8     -         -
K (SSW)      Guillory       7.4      Guillory    7.4      -        -
L (SW)          -             -          -         -      -        -
3 M (WSW)      Major          4.2      Major       4.2      -        -
N (W)        Lacost         6.1          -         -      -        -
P (WNW)      Dwyer          4.5      GSU #1       1.0     -        -
        'Q (NW)       Hurt           1.3      GSU #2       1.3     -        -
R (NNW)      Wallace         1.6     Monroe      3.0      -        -
1 The 1986 receptor location was farther than the receptor location listed in the 1985 REMP Report.
2 The 1986 receptor changed location with no change in the range since the 1985 REMP Report.
3 The 1986 receptor location was nearer than the receptor location listed in the 1985 REMP Report.
14

_)
RIVER BEND STATION RADIOIDGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986                         ,
TABLE 3 USEPA INTERCOMPARISON (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS                      ,
SAMPLE TYPE                                                                                                     AVERACE RESULT (Units)               DATE          ANALYSIS          USEPA "KNOJN" VALUE"        ' RIVER BEND VALUE        (All Participants)
AIR FILTER (pci/ filter)            4/25/86         Beta                    4725                        66.7                  51.3626.18 4/25/86        Cs-137                   1015                       '13.7                  11.4822.13-9/12/86         Beta                    66t5                        83.7                  70.5918.07 9/12/86        Cs-137                   2215                        24.7                  24.1223.63 FOOD (pC1/kg)                 1/31/86        Cs-137                   1525                        17.3                  16.5221.80                      ,
9/25/86       . I-131                   3026                        31.0-                '28.2413.03    -                j 9/25/86        Cs-137                   2025                        22.0                  21.4912.55 MILK (pci/ liter)             6/27/86          I-131                  4116                        48.3                  43.94t4.49 -
6/27/86        Cs-137                   3125                        43.7                  36.55t3.11 WATER
  ~
  " (pC1/ liter)             1/24/86          Beta                    715                         6.7                   7.2011.83 2/14/86            H-3               52272523                       5309*                  5105 340 4/4/86          I-131                   916                         9.0                   8.6221.86 4/10/86          Beta                   3515                        31.0                  32.46t4.51 4/20/86          Co                 1025                        10.3                  10.4722.00 4/20/86        Cs-134                    515                         5.0                   5.3111.32 4/20/86        Cs-137                    525                         6.0                   5.5821.17 5/23/86          Beta                   1515'                       15.0                  14.75t2.83 6/13/86            H-3               31251360                       3277                   30521347 7/18/86          Beta                   1825                        21.3                  17.85t2.68 8/8/86          I-131                  4516                        44.0                  41.6416.15 9/19/86          Beta                    815                        12.7                   9.53t2.82 10/17/86            H-3                59732597                      5337                   5694t406 10/22/86          Beta                   5115_                       34.0*                 46.6316.08 10/22/86          Co-60                  24t5                        26.0*                 24.4522.23 10/22/86        Cs-134                   1215                        12.5"                 11.3011.86 10/22/86        Cs-137                    815                        12.0"                  8.83tl.89 11/21/86          Beta                   2025                        22.7                  20.44t3.21 NOTES:
(a) USEPA "known" values are listed with a range reflecting " expected laboratory precision."
(b) The grand average of all participants' results (excluding outliers) is listed with the experimental (caleclated) sigma for all laboratories.
(c) Analyses perfctmed but results not reported to USEPA (thus not included in participants' average).

    .                                 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATINJ REPORT FOR 1986 RBS analyses of two USEPA air filters tended to over-estimate gross beta activity (as was also the case among participants in general). The beta-counting instrument underwent service, including replacement of the scintillation (phoswich) detector, in August, 1986. Gross beta results for water closely agreed with the "known" values except for that of 10/22/86, which appeared attributable to technician error. Inasmuch as no cross-check air filters have been provided since September,1986, the adequacy of corrective measures remains to be determined.
Results of RBS analyses for Iodine-131 and Cesium-137 in milk, per-formed by gamma ray spectroscopy, were biased high because the sample volume was incorrectly measured and because the counting efficiency de-termined for Cs-137 was too low. The latter problem was corrected by fabrication of a calibration standard closer in density to that of dried milk.
2.5 Program Exceptions Certain samples and analyses were inadvertently omitted _or unavoid-ably altered during the 1986 operating period. These exceptions and the reasons for the omissions / alterations are delineated in Table 4 in ac-cordance with Technical Specification requirements. Corrective actions and impacts on program quality are discussed below.
A mechanical problem resulted in an uncertain volume from the con-trol air sampler (Location ALC) during one week. The problem was cor-rected soon after discovery and its impacts were mitigated by the exis-tence of two "Special Interest" samplers beyond 16 km which provided further control data. A storm-related power outage briefly impacted three of the required indicate- air samplers (Locations AA1, API, AR1) in early August, but appeared        have been an isolated incident of insignificant impact on progrm tuality.
One quarterly thermoluminescence dosimeter (TLD) was lost due to vandalism and was replaced at the beginning of the next measurement period. Inasmuch as this was the only TLD lost auong the 40 required locations, it did not significantly impact program quality.
Slight damage eo tubing in the automatic compositing sampler in the Discharge Line led to uncertainty about the volume of 22 hourly ali-quots in the first week of 1986.      The tubing was replaced and the ac-cumulated volume (which appeared close to the expected amount) was re-tained, as the incident was not deemed to have had a significant impact on program quality. At the beginning of August, 1986, 110 of 168 possible aliquots for a week were lost due to clogged tubing in the Discharge Line sampler. The frequency of tube inspection / replacement was increased from quarterly to weekly after this incident, which re-selted in lower than normal overall sample volumes for the monthly gamma isotopic and quarterly tritium analyses of this medium. In October, 1956, about half of the Discharge Line aliquots for one week were not obtained due to an apparent disruption of the sampler microprocessor program. Personnel were instructed to exercise greater care in handling 16

. m   - _ - _ - . ~ . . .
    '                                                                                                                                                         - *^
RIVER BEND STATION 1 RADIOLOGICAL E!;VIRONMENTAL OPERATING REPORT FOR 1986                         ,
TABLE'4 MONITORING PROGRAM EXCEPTIONS (Page 1.of.2)
Sample Type                Period                    Location                               Exception / Reason Air Particulates and      3/10/86-3/17/86                  . ABI   ,
                                                                                                            *About 75% of normal weekly sample. volume     >
Radioiodines                                                                      not obtained due to apparent electrical:
                                                                                                            -problem.
3/31/86-4/7/86                    ALC'                 Semple volume uncertain due to compres-sor problem.
5/19/86-6/2/86                    AKS
* Samples for two (2) weeks not obtained due to mechanical problems.
6/23/86-7/14/86                    AB1
* Sample volumes uncertain due to failure
                                                                                                            'of elapsed time meter on sampler.
7/28/86-8/4/86                    AA1                 .Eatinated 3.5% of normal weekly sample volume not obtained due to power outage.
7/28/86-8/4/86                    ARI                  Estimated 3.5% of normal weekly sample.
volume not obtained due to power outage.
[
7/28/86-8/4/86                    API                  Estimated 3.5% of normal weekly sample volume not obtained due to power outage.
7/28/86-8/4/86                    AB1
* Estimated 3.5% of normal weekly sample volume not obtained due to power outage.
7/28/86-8/4/86                    AKS
* Estimated 3.5% of normal weekly sample '..
volume not obtained due to power outage.
                                        "
* Sample volume uncertain due to power 8/4/86-8/11/86                    AB1 outage and inoperative elapsed time meter on sampler.
9/15/86-9/22/86.                   AKS
* Estimated 14% of normal weekly sample volume not obtained due to power outage.
Direct Radiation (TLD)      2nd Quarter                     TQ1                  TLD lost due.to vandalism.
February                   TQ1                *TLD lost due to vandalism.

en         m.     +m% :
et
                                                                                                                                                        +.
RIVER BEND STATION RADIOIDGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986                            ,
TABLE 4 MONITORING PROGRAM EXCEPTIONS (Page 2 of 2)
Sample Type                           Period                  location                                   Exception / Reason a     Water (Composite)                      1/1/86-1/7/86            Discharge Line                 Volume of twenty-two (22) hourly ali-quots (of 720 possible) unverified due to damaged tubing in automatic sampler, f
7/29/86-8/4/86            Discharge Line                 One hundred twenty (120) hourly aliquots (of 168 for a week) lost due to faulty tubing in automatic sampler.
10/14/86-10/21/86             Discharge Line                 Seventy-seven (77) hourly aliquots (of 168 for a week) lost due to probable inadvertent disruption of automatic sampler microprocessor program.
                "                                  July                Donaldsonv111e'             *Two (2) or three (3) weekly grab samples not included in composite due to person-nel error.
g Milk                                  July through                    MP2                      Milk samples not available due to dairy closure, December j     Milk                                  July through                    MQC                      Milk sampling suspended due to unavail-December                                              ability of indicator location.
1
]
Broadleaf Vegetation                       . August                   GQC                      Only two (2) of three (3) samples col-j                                                                                                    lected due to limited availability.
* Sample / measurement is not required by RBS Technical Specifications (not identified in ODCM).
J l
i

  -*                                    RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 of . the sensitive equipment. This incident resulted in slightly lower than normal overall sample volumes for the monthly gamma isotopic and quarterly tritium analyses.
               . Suspension of milk sampling / analyses during the second half of 1986 was unavoidable and did not significantly -impact program quality as dis-cussed above in Section 2.3.
Limited variety in the crops available at the state penitentiary (GQC) during August resulted in- failure to obtain one out of 36 required control samples of broadleaf vegetation for 1986. This did not signifi-cantly impact program quality.
3.0 INTERPRETATION OF REMP RESULTS 3.1   Summary of Operational REMP Results The Radiological Environmental Monitoring Program for 1986 was con-ducted primarily by the RBS Environmental Services Group, with support from the Plant Staff Radiological Programs Section in air sampler main-
       -tenance/ calibration and reading / annealing of TLDs. Use of an offsite contractor laboratory for REMP sample analyses was phased out early in
       -1986.
Monitoring results for the exposure pathways are summarized in Table 5, from which measured activities of the naturally occurring daughters of uranium and thorium are excluded.      The 1986 REMP results reflect the impacts of fallout from the accident which occurred in Cher-nobyl, Russia, in late April. Further details of.the Chernobyl impacts, as quantified through intensification of RBS REMP activities, are pro-vided in Appendix B.
3.1.1    Airborne Exposure Pathway - Measurements of radioiodine and other gamma emitters were all below their respective Lower Limits of De-tection (LLDs) except during the last week of May and the first week of June, when airborne contamination attributable to the Chernobyl accident was detected at all indicator and control locations. Gross beta activi-ties averaged 0.03 pCi/ cubic meter at both indicator and control sta-tions.
3.1.7    Direct Exposure Pathway - The monthly average gamma ray ex-posure for indicator and control locations was 3.76 mR total and 3.80 mR total, respectively. Quarterly exposures averaged 11.85 mR total at in-dicator locations and 12.05 mR total at control locations.
3.1.3 Waterborne Exposure Pathway - No gamma emitters were mea-sured in water at levels approaching the Technical Specification LLDs, although Cobalt-58 and Co-60 were measured in a few mcnthly composite samples from the Discharge Line at concentrations between 3 and 7 pCi/ liter. Gross beta activities in surface water averaged 10.1 pCi/ liter in the Discharge Line and slightly less than 6 pCi/ liter at 19

TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SUMFARY (Page 1 of 6)                                                            ,
River Bend Station                                                Docket Number: 50-458 West Feliciana Parish, Louisiana                                  Reporting Period: 1/1/86 - 12/31/86 l         Medium or                  Type and                        Lower Limit i All Indicator i                    Location with Highest                     Control             i Number of l l Pathway Sampled (Unit of Total Number of Analyses of g Detection l
l Stations Mean (f)2 i
l Name A"""*l M**"
Mean (f)2 L cations Mean (f)y          l' Nonroutine Reported !
i L
Measurement)                Performed                           (LLD)       i          Pange                Dist./Dir.                  Range            Range                     Results     l 3                                                                               0.031 (52/52)!                                                              l l Air Particulate                 Gross Beta                 !         0.01            0.028 (309/312)' AGS                                                      0.029                         0       l (464)                    !                         0.005 - 0.125             17 km SE           0.005 - 0.104l           (155/156)           '
                                                                                                                                                                                                          !           l 3                                             '                                                                '
                                                                                                                                    .                               0.005 -                               !           s (pci/m )                                                                                       ,
O 124 Be-7                   'None Pequired:          '0.28 (20/216)             AR1                  0.035 (3/52)l              0.27                         6     !
(324)                                               0.11 - 0.46              0.8 km NNW           0.25 - 0.46 l           (11/108)                              l 0.16 - 0.42                             !            i I
e                     !                                                                                                        l K-40                     None Required           0.48 (33/216) l A032                           0.051 (6/52)               0.47                         0                  1 (324)                                               0.04 - 0.70     l S.8 km NW 0.31 - 0.70             (27/108) g  0.08 - 0.65 Cs-134                            0.05                All (LLD All <LLD                         0     l (324)
I S$                                        Cs-137                            0.06                All <LLD                                                           All (LLD                         0 l
(324)
Air Radioiodine                   I-131                             0.07             0.09 (12/312)             AHS            ' O.11 (2/52)              0.10 (6/15614                      0 3
(467)                                              0.07 - 0.12              40 km SSE            0.10 - 0.11 ! 0.09 - 0.11                                                  1 l
(pCi/m 3                                                                                                            =               _: -____-                                             -
Direct (TLD)           '
Gamma                                             3.76 (455/456)             TM2                  4.50 (12/12) 3.80 (71/72)'                              O Monthly                                              1.30 - 9.70              4.2 km WSW            3.30 - 5.74         1.80 - 6.25 (mR Total)                   (526) 1 Gamma                                             11.85 (151/152)            TM2            j 14.13 (4/4)                   12.05                         0                 )
Quarterly                                            7.60 - 16.10              4.2 km WSW '13.20 - 15.40'                    (22/24)             '
(176)                                                                                      l                          9.40 - 14.90
                                                                                    --                             _ _- __=               -- --             ==                             ------------
Surface Water                       H-3                             2000               2032 (8/8)              Discharge                2366 (4/4)        1582 (4/4)                        0 (12)                                              1420 - 2688               Line                  2016 - 2688         1363 - 1780                               l (pci/ liter)                                                                .                                                                    (
Mn-54                              15          l      All <LLD                                                       l All <LLD                           0 (36)
I Co-58                              15               5.76 (3/24)              Discharge             5.76 (3/12)           All <LLD                         0      .          J (36)                                                3.46 - 6.96             Line                  3.46 - 6.96                                                              j l
Fe-59                              30                 All <LLD        i'                                                 All <LLD                         0      !
l (36)

f TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 2 of 6)                                                     .
River Bend Station                                     Docket Number: 50-458 West Feliciana Parish, Louisiana                       Reporting Period: 1/1/86 - 12/31/86 i     Medium or              Type and      Lower Limit              All Indicator               Location with Highest i Control                   Number of l Pathway Sampled        Total Number          of                   Stations                       Annual Mean               ' Locations        Nonroutine !
(Unit of           of Analyses     Detection                  Mean (f)2               Name                Mean   (f) 2 Mean (f)2       Reported  '
Measurement)           Performed         (LLD)                     Range              _Dist./Dir.               Range          Range          Pesults Surface Water              co-60           15                   4.02 (1/24)               Discharge       4.02 (1/12)'         All <LLD           0 (36)                                single value Line            single value (pCi/ liter)                                        l                                                                   !
zn-65           30          l          All <LLD         "
l All <LLD             0 (continued)             (36)                      '
l.
Nb-95           15                     All <LLD           ,
All <LLD           0 (36)                                                   '
I Zr-95           30        i            All <LLD                                                     All (LLD           0       !
(36)
Cs-134           15                     All <LLD                                                     All <LLD     g 0       ,
(36)
N                               Cs-137           18                     All <LLD                                                 '
All <LLD           0       !
(36)                                                                                                                          !
                              !    Ba-140           60                     All <LLD                                                     All <LLD           0 (36)                                                                                                            .
La-140           15                     All <LLD                                                     All <LLD           0 (36)
Gross Beta           4                  7.88 (24/24)       '
Discharge       10.1 (12/12) 5.76 (12/12)               0 (36)                                2.88 - 22.9               Line            3.33 - 22.9         2.63 - 9.83
               - = .       --          . -               --__
                                                                                                            .__  ________                      ___==
l Groundwater                  H-3          2000                   1597 (4/4)            , WD                  1597 (4/4)       1522 (4/4)          0 (8)                               1426 - 1731               470 m SW        1426 - 1731        1373 - 1802 (pci/ liter)                                                                                                          .
Mn-54           15                     All <LLD                                                     All <LLD           0 (8)
Co-58            15                    All <LLD                                                     All <LLD           0 (8)
Fe-59           30            .        All <LLD                                                 j All <LLD             0        !
(8)                    j                                                                     !                               ! '
                                                               !'                                                                   l Co-60            15                    All <LLD                                                 ! All (LLD             0 (8)

      ~ . - .        -                             .                . .                    ..                  ,     ,
                                                                                                                                                                                                                                   ~
k TABLE 5                                                                                                      '
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 3 of 6)-                                                       .
River Bend-Station                                                       Docket Numbers 50-458 West Feliciana Parish, Louisiana                                         Reporting Period: 1/1/86 - 12/31/86
.j -
Medium or                   Type and        i Lower Limit                            All Indicator-i             . Location with Highest i Control                     i Number of          !
Pathway Sampled              Total Number !.                       of                        Stations       !              A"""*l M**"               ! L cations ! " "# "DI"*                   !-
g Mean (f)2* ! Reported .! '
(Unit of          I of Analyses ! Detection
* Mean (f)2-           Name                   Mean (f)2   '                           -
Measurement)                 Performed        *
(LLD)                            Range             _Dist./Dir.              Range             Range                 Results    'l
              ! Groundwater-                         En-65.                           30           l          .All <LLD        .                                        ! All <LLD .
                                                                                                                                                                                                        'O.        !'
              !                                        (8)                                         !                           !                                            -
              !        (pCi/ liter)                               !                              '!                           ~!'.                                                     . .                         !
              !                           l          Nb-95        !                   15           !            All (LLD      .l                                        .      All (LLD      g, 0       .!
l        (continued)                     (8)                                         !                           !                                        !                    .
                                                                                                                                                     ,                  !                                          l' 3
Zr-95                            30                        All <LLD                                                ! All <LLD.                      O.        !
l            (8)                                                                                                                                                         l l                                  Cs-134                             15           i            All (LLD                                                       All <LLD                  0
 .            !                                        (8)                                         l                           !-
Cs-137                            18           '
All <LLD         l                                     ! All <LLD                       0  ~
 'i (8)                                                                     !                                        !                                          l y                                              Ba-140                            60                         All <LLD                             !                        All <LLD'      !          O         j '.
'                                                      (8)                                                                                            !                                      !--
                                                                                                  .!                            l                     t La-140-                           15           '
All <LLD                                               ! All (LLD                       0         f (8)                                                                                                            .j-                                          !
2.61 (4/4)5
                                           ! Gross Beta .                       .        4                                           WD                    2.61 (4/4) '                       ?          O (8)         '
                                                                                                              <LLD
                                                                                                                         ....l_..
3.35          470 m SW           <LLD-3.35.l2.25(4/4) 1.73 - 3.24
                                   ._g.__                                                              __.- - -                             .                 .            .                      _
Drinking Water          .           H-3                         2000                     '1609 (4/4)               Donaldson-           1609.(4/4)-        1582 (4/4) !               0         !.
l           (4)                                                  1533 - 1686              ville               1533 - 1686       1363 --1780 !
(pci/ liter)        {                                                                                          138 km Downstream                                              l
'                                                    Mn-54                            15                         All (LLD                             j                                                  O          !
(12)         '
: l. All <LLD           !
l 4                                                                                                                                                                        !
                                                                                                                                                                                              '                     I Co-58                            15                         All (LLD          .
                                                                                                                                                                       -l      All <LLD                  0          $
(12)                                                                       !
a Fe-59                            30                         All <LLD        l                                     .I      All (LLD                  0
                                            !         (12) "        !                                                            !                                       !                    !
                                            !                       I                                                                                                                         l
                                            ?        Co-60          l                  15                        All <LLD-                             l                       All <LLD       l          0 (12)          !                                                                                  !
Zn-65         !                 30                         All.<LLD                                                ' All <LLD           !          0 (12)
V

TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 4 of 6)                                                                    ,
River Bend Station                                                   Docket Number: 50-458 West Feliciana Parish, Louisiana                                     Reporting Period: 1/1/86 - 12/31/86 l              Medium or                l,           Type and               Lower Limit *i All Indicator                               Location with Highest                    l       Control               Number of j
    ! Pathway Sampled                               Total Number ,                         of g                  Stations          l           Annual Mean                                   ca     ns            Nonroutine l (Unit of               , of Analyses ! Detection                                          Mean (f)y              Name                            Mean (f)2 l Mean (f)2                      Reported Measurement)               '
Performed       '
(LLD)                       Range               Dist./Dir.                        Range              Range                 Results       !
6
      ,        Drinking Water                               Nb-95                          15         l          All <LLD        !                                                  ,
All <LLD       ,            0        $
j                                                       (12)                                                                 l                            l                                            l
    !                (pci/ liter)                                                                                                                             l                                            l
    !                                                       Zr-95                          30                    All (LLD                                     '
All (LLD j                  0 (continued)              l             (12)        '
                                                                                                                                 '                                                                         le                    !
    .                                                     Cs-134                           15                    All <LLD                                                           ! All <LLD             !            0        l l                                                       (12)                                                                                                                    .
l                      l l
Cs-137                           18                    All <LLD        '
All <LLD                    0        j (12)          l                                                      .
j i                    i Ba-140                           60                    All <LLD                                                                   All <LLD        L           0        '
(12)         ,                                                                                                           ,
M                                                       La-140                           15                    All <LLD                                                                   All <LLD                    0 (12)                                                                  'l e
i Gross Beta                           4                 5.66 (12/12)7            Donaldson-              5.66 (12/12)              5/76 (12/12)!                 0 (12)                                               <LLD - 10.2              ville                   <LLD - 10.2               2.63 - 9.83 l                                                                                                                         . 138 km                                                                                       ,
                                                                                                                                  ' Downstream                                                                                   '
_____                      ______            =---               _ _ - - -          . . _            - - - -
Shoreline                                    K-40                        None            ,       18590 (2/2)             SED                           18590 (2/2) l           Not                       0 Sediment                                (2)                   Required             l      16980 - 20210             4 km                 f16980 - 20210                Required Downstream                                                                               t
           ,         (pCi/kg dry)
       ;                                                  Cs-134                          150                    All <LLD                                                                   All <LLD                    0 (2)                                                                   ,
I Cs-137           .              180                    All <LLD                                                             '
All <LLD                    0        !
(2)         ?                                                                                                                                                       !
(32)                   Required              l     350 - 1473               6 km ESE                      350 - 1473          768 - 1490                            !
(pCi/ liter)             l,                                                       !                                                                                                                        !
8 I-131                            1                  5.55 (8/18)             MP2                           5.55 (8/18) g0.82-14.1                  2.06 (3/14)                  0 l
(32)                                               0.82 - 14.1              6 km ESE                                          1.78 - 2.53        ,
g Cs-134                           15                  1.46 (3/18)        P MP2                              1.46 (3/18) , 1.27 (1/14)!                        0 (32)                                               1.07 - 1.87              6 km ESE                     1.07 - 1.87 ' single value

l TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM CUMMARY (Page 5 of 6)                                                             .
River Bend ftation                                           Docket Number: 50-458 West Feliciana Parish, Lcuisiana                             Reporting Period: 1/1/86 - 12/31/86
[          Medium or          '
Type and      i Lower Limit                 All Indicator i*                Location with Highest. i Control                           Number of l Pathway Sampled                 Total Number '              of g                 Stations                            Annual Mean            l Locations          '
Nonroutine '
(Unit of               of Analyses         Detection                   Mean (f)2                 Name                    Mean (f)                                Reported Measurement)                  Performed               (LLD)                        Range               Dist./Dir.                Range   { MeanRange(f)2      '        Results Milk                                Cs-137                  18                 4.50 (6/18)                MF2                   4.50 (6/18)     2.82 (2/14)                  0-(32)                                     2.62 - 5.79                 6 km ESE             2.62 - 5.79     2.40 - 3.24          ,
(pCi/ liter)
Ba-140                  60                   All <LLD                                                        All <LLD                    0 (continued)                     (32)                                                                                                                         ,                   ,
                                                                                                                                                                             !                i La-140                  15                   All <LLD                                                        All <LLD          j         0 (32)                                                                                                                         !
                                                       =,      -
                                                                                                                                                                         -l-Fish / Invertebrates                 K-40               None          ,
3028 (8/8)            , FD                        3028 (8/8)     2871 (9/9) l                 0 (17)             Required        '
1770 - 3785                  4 km                 1770 - 3785   2173 - 3282 '
(pCi/kg wet)                                                                                         Downstream Mn-54               130                    All <LLD                                 '                      All <LLD                    0       f l
(17)
* N
* Co-58               130                    All <LLD                                                        All <LLD                    0 (17)                                                                                                                                            ,
Fe-59               260                    All <LLD                                 ,
All <LLD                    0 (17)                                                                                .
l J         Co-60               130                    All <LLD                                                        All <LLD                    0 (17) l                  I-Zn-65               260                    All <LLD                                                        All <LLD                    0        l (17)                                                                                                                                           '
Cs-134                 130                   All <LLD                                                        All <LLD                    0 (17)
Cs-137                 150                   All (LLD All <LLD                    0 (17)                                                                                                                                           e Broadleaf                           Be-7      ?        None                   386 (21/72)           f G1                      359 (10/36)   1079 (15/36)'                  O l        Vegetation                     (108)      l      Required                 87.7 - 834                 1 km WNW              87.7 - 693     203 - 3919 (pCi/kg wet)                 K-40                None            ' 2869 (56/72)                    G2               i 3091 (29/36)    4254 (26/36)                   0 (108)             Required                 546 - 6232                  1.3 km NW           546 - 6232    1732 - 9980 e
I-131 9    '
60                 36.2 (6/72)                G1                   54.7 (2/36)  , 100 (3/36)           '
0 (108)                                      17.2 - 92.2                1 km WNW         ,   17.2 - 92.2 ' 95.4 - 104

TABLE 5
                                                                                                                                       ~
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 6 of 6)                                        ,
River Bend Station                           Docket Number 50-458 West Feliciana Parish, Louisiana             Reporting Period: 1/1/86 - 12/31/86 Medium or              Type and     i Lower Limit     All Indicator          Location with Highest      Control .i Number of j Pathway Sampled        Total Number '         of y         Stations                Annual Mean           L cations ? Nonroutine-!
(Unit of           of Analyses      Detection          Mean  (f) 2      Name            Mean (f)2     Mean (f)2 l Reported   '
Measurement)           Performed           (LLD)            Range          Dist./Dir.         Range       Range      Results-Broadleaf                 Cs-134              60           All <LLD                                    ,  All <LLD       0 Vegetation                (108)
(pci/kg wet)      i    Cs-137              80          35.6 (2/72)     , G1            46.1 (1/36)     All <LLD  ,    0      '
(108)                         25.0 - 46.1    '
1 km WNW      single value (continued)
NOTES:
: 1. Lower Limit of Detection (LLD) as defined in RBS Technical Specifications (NUREG-ll72).
: 2. Mean and range based on detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses. (f)
: 3. Elevated levels of gross beta activity were measured at all locations on samples collected during weeks 20 through 23 of 1986 as a consequence of the Chernobyl accident. Cesium-137 was measured at 1 indica-tor and 2 control locations, and Ruthenium-103 was measured at 4 indicator and 2 control locations during this period.     (See Appendix B.)
: 4. Radioiodine was measured .at all locations on samples collected during weeks 20 and 21 of 1986 as a consequence of the Chernobyl accident (see Appendix B).
: 5. The gross beta activity of the 3rd Quarter grab sample was measured as 0.98 pCi/ liter, less than an LLD of 1.91 pCi/ liter obtained on the day the analysis was performed.
: 6. The upstream surface water sampling location (SWU) is used as a " control" for drinking water comparisons.
: 7. The gross beta activity of the February, 1986, composite sample was measured as 2.48 pCi/ liter, less than an LLD of 2.94 pCi/ liter obtained on the day the analysis was performed.
: 8. Radioiodine, Cesium-134, and Cesium-137 were measured at all locations during May and June, 1986, as a consequence of the Chernobyl accident. Zinc-69m was measured at the indicator location in May, 1986.
(See Appendix B.)
: 9. Radioiodine, Cs-137, Ru-103, and Arsenic-76 were measured at one or both indicator locations during May and June, 1986, as a consequence of the Chernobyl accident. Radioiodine was measured during May, 1986, at the control location.       (See Appendix B.)

2
~P       ,
      ;E                                              RIVER BEND STATION-1 RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 Tritium activities in surface water averaged 2366
                                                            ~
                 - all other stations.
                 ' pci/ liter -in the ' Discharge Line and from about 1600 to 1700 pCi/ liters at 'all' other stations. - Gross beta activities averaged 2.61: and 2.25        (
pCi/ liter in the downgradient and upgradient samples, respectively.
                  ' Groundwater tritium concentrations averaged 1597 pCi/ liter-in.tne'down-
                 ;gradientfwelliand 1522 pCi/ liter in the upgradient well. Only naturally occurring gamma emitters (e.g. ,_ Potassium-40) were measured in. shoreline
                                          ~
sediment from the Mississippi River below RBS.
                                                                   ~
3.1. 4 - ' Ingestion' Exposure' Pathway - Concentrations of radioiodine and other gamma emitters were. all below their respective LLDs except           i during late May and early June. At this time, airborne ~ contamination resulting from the Chernobyl incident was deposited by rainfall and was
                 . measured in milk and vegetation from indicator and control locations (Table 5,. Appendix B). . Only naturally occurring ' gamma emitters (e.g. ,
                  . Potassium-40) were detectable in fieh-and river shrimp samples from 1986.
3.2: Comparison of Operational and Baseline REMP Results Radioiodine and other gamma emitters in the airborne exposure
                  ~ pathway were not measured at levels above the LLDs.during 1986 except during the. three to four. week period in the second quarter when
                   -Chernobyl impacts were being observed (Table 5, Appendix. B)'. Gross. beta activities on air particulate filters averaged 0.03 pCi/ cubic meter at
                   -both indicator and control' locations in;1986, as they did during the .
preoperational phase'of the REMP (Appendix A).
                          -In the direct exposure pathway, the 1986 net monthly average read-ings-for monthly and quarterly TLDs from both indicator and control lo-cations were slightly . lower than the corresponiing values for previous years. Thus far, no appreciable differences:have been observed-in TLD exposures between_ indicator and control locations or between the same locations from'one_ year to the next.
In the waterborne exposure pathway, no gamma-emitting nuclides were
                   -measured above the RBS Technical Specification LLDs during 1986, as had been the case during the preoperational-phase (Appendix A). Gross beta and tritium (H-3) levels in water are compared below:
WATERBORNE AVERAGE GROSS BETA- (pCi/ liter) 1/1/85-  10/31/85-10/31/85    12/31/85       1986 Surface Water, Upstream (4 km) 7.8         7          5.76 RBS Discharge Line-                              N/A         6         10.10 Surface Water, Downstream (4 km)                 8.1        6.3        '5.69
 *D                   Drinking Water (Donaldsonville)                  6.8        5.5         5.66 Upgradient Groundwater                            6          2          2.25 Downgradient Groundwater                          4          2          2.61 26

N
: s.                f                                                            - RIVER BEND STATION:                                  ..        .
E
                                               -RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1986 WATERBORNE AVERAGE TRITIUM (pCi/ liter) 1/1/85-              10/31/85-10/31/85                    12/31/85                 1986 Surface Water, Upstream (4 km)                                             < 2000                     < 2000                   1582.
                                .RBS Discharge Line                                            .
:N/A                < 2000                   2365 Surface Water,: Downstream (4 km)                                          < 2000                     < 2000                 ' 1699      '
             ~
Drinking Water (Donaldsonville)                                            < 2000                     < 2000                   1609 Upgradient Groundwater                                                     < 2000                     < 2000                   1522 Downgradient - Groundwater                                                 < 2000                     < 2000                   1597 With the exception of the Discharge Line sampling point, the 1986. water-borne gross 1 beta and tritium activities averaged about the same or slightly 1cwer than'those observed in previous years'.- The slightly in-
                                               ~
                                - creased-levels of gross beta and tritium activity in the Discharge Line during 1986 are well below the reporting levels established in RBS Tech-nical Specifications.                        It should be'noted that Discharge Line monitoring.
results-are based on composites of hourly aliquots of equal volume, rather than on flow-weighted hourly grabs. Although it.may be argued-
                                 'that the long-term averages may be fairly representative, it can be seen that .the' sampling requirement would be truly representative (especially
                                - for individual months) only if RBS liquid discharges were continuous-at a constant rate,~ which is not the case.
In the ' ingestion exposure pathway, no gamma-emitting nuclides were.
measured'above.LLDs except during May and June, 1986, when precipitation deposited airborne contamination from the Chernobyl accident upon vege- -
,                                 tation (including dairy forage)- in the general vicinity of RBS (see -
Appendix B).- In 1986 there appear to have been no increases in radio-nuclide concentrations, attributable to RBS operation, in food / forage-
 .                               media over preoperational levels (Appendix A). Naturally occurring
-                                 Potassium-40 (K-40) was measured at 1335 pCi/ liter in indicator milk and at 2869 pCi/kg in indicator vegetation during 1986, as compared. to 1313
;                                .pCi/ liter (milk) and 3782 pCi/kg (vegetation) during the preoperational REMP. ' Another naturally occurring nuclide, Beryllium-7, was detected at 386 and 1079 pCi/kg in indicator and control vegetation samp.les, respec-tively; however, none was quantified during the baseline phase for ~ com-parison.
3.3 Comparison of REMP Results with Operational Controls r
The only measurable increases in concentrations of radionuclides or levels of radiation in the vicinity of RBS during 1986 appear to have been associated with the fallout from Chernobyl and the expected low levels in the Discharge Line. The indicator versus control comparisons
;                                 for airborne gross beta activity (Section 3.1.1; Table 5) corroborate the-reports of limited or no releases of particulate or radiciodine in 1986. The 1986 environmental TLD data (Section 3.1.2; Table 5) showed no appreciable differences in direct radiation exposures between indi-cator and control locations. These findings substantiate the adequacy of source control and effluent monitoring at River Bend Station.
27 a
: v. w                                       -*wfew-                         yr    -"-- 9ee,=-m+-    y  wye   g   atr    wt*=w?$' T 9 c- g- ?++-T-t --7e f
* t' y                  *--*i   y 9-m+t- er --vs.T-~.* --
e ei = ens me  r-quie      g-

;iL   -
RIVER BEND STATION
                  . RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT ~FOR 1986-APPENDIX A Summary of Preoperational REMP (Baseline) Results Table A.1 summarizes.the results of preoperational radiological environmental' monitoring from January, 1983, through October, 1985.-
Further details are available in the respective annual reports .(1983, 1984, 'and 1985) .
A-1

TABLE A.1 PPEOPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 1 of 6)                                                                             ,
River Bend Station                                                      Docket Number: 50-458.
West Feliciana Parish, Louisiana                                        Reporting Period: 1/1/03 - 10/31/85 Medium or                            Type and                  Lower Limit i All Indicator                                    Location with Highest                                 Control        i Number of l Pathway Sampled                    Total Number                             of             i         Stations                           A"""*1 "**"                                                                         l' (Unit of of Analyses                      Detection g
Mean (f)2                  Name                          Mean      (f) 2 , L cationsMean (f) Reported y l Nonroutine g
Measurement)                          Performed                         (LLD)                        Range                    Dist./Dir.                      Range                      Range               Results i
Air Particulate                         Gross Beta                       0.01                         0.03                      AQS2 O.03              l         0.03                  N/A 3
(1086)                                                 (752/759)                   5.8 km NW                   (146/158)             '
(326/327)       '
(pCi/m )                                                                                     0.01 - 0.09                                           0.01 - 0.09                0.01 - 0.08 Cs-134                      0.05                        All <LLD                                       ,                                    All <LLD                 N/A (95)                                                                                                 l                             !
Cs-137                      0.06                        All <LLD                                       '
All <LLD       f         N/A (95)
__--      __ --             - - -     ___         ==______          --             --     - - - -            -_____             -                         __         _____        =.          ___
All <LLD                                                                            All <LLD       '         N/A Air Radioiodine                                I-131                      0.07                                                                       ,
3 (1086)                                                                                                !
(pCi/m )
      -                                =          -.
                                                                      '__                   _____     ____         - ._____           __-             ---      -_____         - - _ _ _     -- -        _____e__.___
>       Direct (TLD)                                   Gamma                                                   6.8                      TM2                      7.8 (27/28)                         6.7                  N/A Monthly                                               (1018/1064)                   4.2 km WSW              3.2 - 16.2                       (139/150) w (mR Total)                              (1214)                                               0.7 - 19.3                                                                            0 - 27.8                           ,,
3                                                        3                           3 Gamma                                                  19.0                      TG1                            27.5                         18.9                  N/A Quarterly                                                 (404/418)                    1.6 km SE                    (11/11)             '
(51/54)
(472)                                              6.8 - 32.1                                             12.2 - 27.6                  6.5 - 23.5
_ _ _ _ _ _ _ _ _   __ ____          -- _ . - .               -   ___,._________                         - -- __- ._                            __=      _          ----- .           - _ .
Surface Water                                 H-3                        2000                       All (LLD                                                                            All <LLD                 N/A (24)
(pci/ liter)                                                                                                                                                                i                     ,
l                                                Mn-54            '
15                       All <LLD                                                                            All <LLD                 N/A       W (68)
Co-58                          15                       All <LLD                                                                            All <LLD                 N/A (68)
Fe-59                          30                       All <LLD                                                                            All <LLD                 N/A (68)
Co-60                           15                      All <LLD                                                                            All <LLD       !         N/A (68)                                                                                                                                                    l l
Zn-65                          30                      All <LLD                                                                            All <LLD                 N/A (68)                                                                                                                                                                        !
Nb-95                          15                      All <LLD                                                                            All <LLD                 N/A (68)                                        ,

ts
                                                                                                                                                                                                                    .                                 .       o    ,
                                                                                                                                                                                                                                 . ..               _v.
TABLE'A.1
                                                ' PREOPERATIONAL RADIOLOGICAL ENVIRONMENTAL' MONITORING ' PROGRAM SUteULRY (Page'2 of 6)                                                                          .
River Bend Station                                  .
Docket Number: 50-458 Nest Feliciana Parish, Louisiana                                           Reporting Period: 1/1/83 - 10/31/85 I        Medium or                       Type and          i Lower Limit !- All. Indicator.i                                          Location with Highest.                     Control               i Number of,-l l Pathway Sampled               , Total Number ! .                      of          l              Stations               !                  'A"""*1 "**"                      L cations Mean (f)2 .jl Nonroutine   ' Reported..l!
g
    .!           (Unit of         I of Analyses ! Detection                              l            Mean (f) 2               ' Name                         Mean   ( f) 2
                                                                                                                                                                                                            ! Results> - l-
     ' Measurement)               ! Performed                   '
(LLD)                              Range                  .Dist./Dir.                Range                   Range i
Surface Nater                       3r-95                        30          i              All <LLD                                          ,                           All.<LLD J!                  ..N/A:                   j i                                             (68)        .!                        !-                                                               l                    l-                           l                               l-l l
(pCi/ liter)      i l             Cs-134                        15 l
                                                                                         '              All <LLD l
l All <LLD               .l  e         N/A
                                                                                                                                                                                                                                      'l 1          (continued)            ,
(68)           .
l                            l                             !                                                                                                              l                            !
     '                                          Cs-137          '
18                        All <LLD               '                                                                                      N/A
                                  !                                                      l                                                                                     ] All <LLD                   !                                ,
                                  !                (68)         l                        l l                                                             l
                                  !                             I                                                                                                              !
5 l             Ba-140           l            60                        All (LLD                                          l                    l All (LLD-                         -N/A-(68)          !                                                                                                             !                                                              ,
                                  ,            'La-140                        15          '
All <LLD2               '                                              ] All <LLD                   l         N/A.                    l (68) 1                                                                                                             l                            l                                 l
:n-   ,                                                                                                                                                   i                    i                            !                                 !
 '    !                                      Gross Beta                         4
                                                                                          ,          8.1 (23/26)                        SND                     8.1            l          7.8               l         N/A.                     l''
      !                            !               (52)                                                  4                        4 km                l (23/26)          !       (24/26)              l W     !                            !                                                                                                    downstream !          4 - 12         'l          5 - 13            -l                                  !
      ; --       - = =       __    ;                 -..______      .____ ________,            __.             .-   -- - - - _ :
                                                                                                                                                       -- l                 -:    __.-- -                -
_______.- - l.
l' Groundwater                '
                                         ,        H-3               ,      2000             j'          All:<LLD                                          l                      . 'All (LLDf                         N/A                      l (24)           l                         l                                                             l                                                                           -
l (pci/ liter)-                                     l      .
l
                                     !          Mn-54             1           15            l           All <LLD                '                       -l.                           All <LLD ~!-                    N/A                      '
l             (22)           l                         l                                                              l                                                 l                          - l.
                                                                  !                         t-              .
                                                                                                                                                           !                    .-                           !                                 t-l         Co-58                         15.                       All <LLD-                                          l                    l All <LLD                   !        N/A                      !'
(22) l'                                                              l-
                                                                                            .-                                                                                                                                                 l l                     .
Fe-59                         30'                       All <LLD'                ,                         ,
l All <LLD.- '                        N/A -
(22)          i
       !                                                          !!                                                          .l-                                                                -
                                                                                                                                                                                                             !                                 j.
Co-60             '
15            '           All <LLD                 '                                                    All'<LLD                        N/A           , l -
                                                  '(22)                                                                                                    ,                    ,
                                       !                          .                                                                                        l.                 '!.            .
                                                                                                                                                                                                                                            -l
                                       !         Zn-65.         + l- .        30' ,_-                   All <LLD              '!.                          !                    l, All <LLD-                          N/A                       l l           (22).          l . -                                                         l.'                       l                  .!                        . . ,                                   !.
l                            1                           !
t-                                                            !
                                                                                                                                                                                !           ..       'l                                         1.
I                                !        Nb-95                      ' .15      .!
All <LLD
                                                                                                                                 !                                              l      All.<LLD. '                    N/A
                                         !        -(22) ,                                                                                       .j-                                                                                              l
        ,                                        Zr-95              '
: 30.           '        'All <LLD'                                                                       All'<LLD              j        N/A-                                       :
l                                           (22)                                                                                                 .,
e                                                                                                                                                                                                   ,
         ,                               .-                                                                                                                 l
: 1.                                                             .                                              . I.                                  !
                                                                                                                                                                                                                                *~
m,       .
Y                                                                                                                                       ..J m         _
y

m y~         n
                                                                                                                                                                                                                                                    .. a
                                                    ~                                                                                                                                        ".~                                                ?          .,
                                                                                                                                                                                                                                                                             =
TABLE A.1                                                                                  -e
                                   '            ~ 'PREOPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM $UMMARY                                                                                             s,,
                                                                                                                                                                                                                                ~
                                                     '                                                                           (Page 3 of 6)                                                                    - _       .
                                                                                                                                                                                                                                                                              ~
T' s                                                 River Bend St5 tion'                                                                       Docket Number: 50-458
                                                  '4est Feliciana Parish, Louisiana                                                          Reporting Period: 1/1/83 - 10/31/85 Medium or             l         Type and-                         Lcwer Limit                                 All Indicator                 . Location with Highest '[-Control                                      l Number of                  '
Pathway Sampled       .! Total Number                                                  of - y' ~;                 Stations                              Annual Mean                     -
l,       (Unit of
                              ~
                                      ! of Analyses l                             Detection                                     Mean (f)y         ' Name                              Mear. (f)3.l1LrcationsMean (f)2 '
Reported          Nonroutine Measurement)
(LLD)                          Range                  Dist./Dir.                      Rangs'                    Range                 Results i_ Performed
        ! Groundwater              ,h~2 Cs-134                                      , 15                                        All <LLD                                                                          All <LLD          )       N/A                                 -
l
                                      !~
(22)                                                x       ,
        !       (pci/ liter)                                                                                                                                                                            !
l                                          Cs-137               .                            18                         All <LLD                                                                ' All (LLD                          N/A (continued)                            (22)             '
                                                                                                                                                                                                                .All <LLD           !
N/A                  '
l             Ba-140                                           60                         All <LLD (22)
La-140                  l                        15                         All <LLD           ,                                                              All <LLD                  N/A (22)               !                                                                       !
          ,                         .           Gross Beta !                                           4                         4 (5/12)                  WD                          4 (5/12)                     6 (2/3)                 N/A (15)               '
2-8                      470 m SW                      2-8                           3-9 y       ;..-          .-    - ..         ...-           - - - - - - -
g     l     Drinking Water           l               H-3                                          2000                        All <LLD                                                                          All <LLD                  N/A                   '
(18)                                                  -
  *              (pCi/ liter)                                                                                  -
                                        !           Mn-54                                             15                         All <LLD          '
All <LLD                  N/A                   ,
(40)
Cc-58                                           .15                         'All (LLD                                                                         All (LLD                  N/A (40)                                                                                                                                             !                                                        !
l Fe-59                   .
30                         All <LLD          '
All <LLD                  N/A                   '
l              (40)               '
    '                                                 Co-60                       -                   15                         All <LLD                                                                         All <LLD                  N/A (40)                                                                                                                    ~
I Zn-65                                           30                         All <LLD                                                      .
                                                                                                                                                                                                                - All <LLD            '
N/A (40)                 l.
e Nb-95                   l                       15                         All <LLD                      '-
All (LLD            '
N/A (40) ~               j                                                                                                                                                              -
Zr-95                   l. '                    30              '
                                                                                                                                 ??1 <LLD                                    ,                                     All <LLD                 N/A (40)                                             *              '
                                                                                                                                                                                                           .                                                       l ,
l Cs-134                                          15                         All <LLD                                                                  l All <LLD                       N/A                    'f (40)                                                                                         l                                                     l                                                       ,
i
                                                                                                                                                                                                                                                                   'l l                                                                                                                                                                                                                                                      '

                                                                                                                                                                                                              *o TABLE 6S. 4 PREOPERATIONAL RADIOLOGICAL ENVIRONA W A' MONITORING PROGRAM 

==SUMMARY==

(Page 4 /d 6)                                                                      ,
River Bend Station                                              Docket Number 50-458 Nest Feliciana Parish, Louisiana                                Reporting Period: 1/1/83 - 10/31/85 Medium or                        Type and     i Lower Limit 'i All Indicator                                    Location with Highest l Control                      i Number of Pathway Sampled              Total Number                 of   y             Stations                                   Annual Mean                                    !
(Unit of                  of Analyses           Detection                Mean (f) 2                      Name                     Mean  (f)2 j l . L cationsMean                      !.
(f) 2 l Nonroutine Reported Measurement)                  Performed                 (LLD)                 Range                        .Dist./Dir.                 Range        '
Range           Results        l
                                                                                       '                                                                                 l All (LLD                N/A          l Drinking Water                      Cs-137                18                 All <LLD                                                                                  ,
l                                      (40)                                                                l'                                                           -l (pci/ liter)                                    l                                                      l                                         '!                  l                ' l'
                                                ,         Ba-140-               60                 All <LLD                    !                      !                  ! All <LLD          l     N/A          l (continued)             '
(40)                                                                l                      l                  l                   !                  !
                                                                                                                               !                                         .                   l                  l 15                 All <LLD                                           l                  l All (LLD l              N/A          l La-140                                                               l (40)                                                                !                                                             !                  !
Gross Beta                  4           6.8 (28/28)                           Donaldson-             6.8 (28/28) l7.8 (24/26) l               N/A        ~j l
(54)                                     3 - 12                     ! ville                !      3 - 12      !       5 - 13      I                  l l 138 km
                                                !                                                                              Idownstreaml'                          _-l____________
l                ____----- -- - l
                                                                                                                                                                                                                ?         f g                                                         --l-            - ___ __ _-
  ;;.                 Shoreline                 f          K-40                None          13.7E3 (2/2) ' SED                                       ! 13.7E3(2/2) l             Not        l     N/A
                                                                                                                                                                                                                '~
l
                                                                                                                                                      ?(11.4-15.9)E3l Required !
     ,                  Sediment                            (2)       ,
Required       .(11.4-15.9)E3 l 4 km                    downstream                            '
  *                     (pCi/kg dry)                                                                                           !                                                             !                  ,
Cs-134                150                All <LLD                    !                      !                                      !     N/A          i (4)                        '
l                                         l                   l l.
1                                       :                                         !
Cs-137             . 180                All <LLD                   .'                                                             !     N/A           l (4)                                                                                                                              i                  !
                           =-__        .___,_ -                -g____ l -                --- .          _________                l__      _- ____'                 -___g__              _
Milk                                 K-40                None            1313 (8/9)                      l MF2                       1313 (8/9) ' 1318 (7/9) !               N/A          1 (18)            Required          1179 - 1475 6 km ESE               1179 - 1475        1196 - 1409 l'                      !
(pci/ liter)                                                                                                                                     ,
7  l                   l I-131                  1             .All <LLD                                                                        All <LLD           N/A           l (81)                                                                                       ,                                      ,
l' Cs-134                15                 All <LLD                                                                     All <LLD           N/A           l-8 (82)                                                                                                          l                   !
7 !                    !
Cs-137                18                 All <LLD l                '! All <LLD               N/A           I (82)                                                                                                          l                                       l Ba-140                60                 All <LLD                                                                     All <LLD     I     N/A (82)                                                                                                                              l
                                                                                                                                                                                    ~
                                            ,             La-140                15                 All <LLD                                                                     All <LLD     l     N/A (82)                                                                !                                                             !                   l
                                                                                                                                                                                            ~!
r
                                                                                       !                                                                                                     !                  I l

r                                                                                                                                                                                                       .
l                                                                                                                                                                               L   ...c l-1                                                                                      TABLE A.1                                  <
l PREOPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==
(Page 5 of 6)                                                             .
River Bend Station                                   Docket Number 50-458                    ,
                                             < West Feliciana Parish,. Louisiana                   Reporting Period: 1/1/83 - 10/31/85 l
Medium or                   Type and     i. Lower Limit i All Indicator i                       Location with Highest j -Control                      i Number of l Pathway Sampled            Total Number !               of       !      Stations        !'            Annual Mean-                 ! L cations 'i N nroutineLl.
Mean ( f) 2 !: Mean (f)2.] . Reported l g
[                  (Unit of        .'. of Analyses ! Detection                  l      Mean = (f))     ! Name                                                        .
: l.         l Measurement)                   Performed     !          (LLD)-     !         Range        l Dist./Dir.                     Range             Range        l Results         !
I       '                                               'I                      I                      I                                                               I                 !
6
        ! Fish / Invertebrates                                                        9037 (2/2)                          ' . 9037: (2/2)              '7840-- (4/4)-l      N/A      'l K-40                  None       !                             FD l       j                           '
(6)             Required- l 6320 - 11754                     4 km          (6320 - 11754             4177 - 11438!                 . l-l                (pCi/kg wet)                                                  l                      ,      downstream.!-                                            l                 ,
{.                                                                     !                                                                 .                    l                 !
                                                                                                                                                  ' All <LLD.
 !                                            Mn-54       '
                                                                      .130       l     All <ILD                                                                        l   .N/A'         l.
(15)                             l                                           ..                                         j Co-58                    130             All <LLD                             \                    -l .All <LLD          !    N/A      . .l-(15)                            .                      .                    l                     l                    l Fe-59                    260       l     All <LLD        !                                          l All <LLD           l'   N/A-         l (15)                             l                     l                                                                                 !
Co-60                    130             All <LLD                             .                     l 'All (LLD               N/A          !
      >                                         (15)                                                                        j                     !                                      !             .1 1:
          .                         .                                                                                       .                     1 8                             '
zn-65                    260             All <LLD                             l                     l All <LLD . i!           N/A          l m                                         (15)                                                                        !                    'l                                      j l                     l.                                     l 4                                   Cs-134       W           130             All <LLD                             !                      ! All <LLD               N/A'         l.
(15)        l                                          .                    I                     !
                                                           !                                         'l                                                                  ,
1 Cs-137        !          150        . All <LLD         !
                                                                                                                                                        . All <LLD     '
N/A           !
l                                  (15)        !                     !                     l                                                                                 !
                                                 -- g   - =-- ===---
                                                                             =--l--
l l    Broadleaf                       K-40         l        None         !   3368 (6/11) .          -. G2                  3368 (6/11) l'          3768            N/A Vegetation           '
(12)        ! Required            !   1398 - 5389              1.3 km Nw      . 1398 - 5389 l single value               i 7    ~
(pci/kg wet)                  I-131                  60            .All <LLD                                                           All (LLD l         N/A           .
(75)                                                    !                                                               !                 !
Cs-134                   60             All <LLD                               !                     ! All <LLD           !   N/A (76)                                                                                               !                    !
I Cs-137                   80              97 (4/43)               G1                    97 (4/43)      l    All'<LLD       !   N/A           !
           !                                    (76)                                   59    '120              1 km WNW              59 - 120
: l.                                     l I
                                                                                                                             .-                     l
:                                                            l-i u                                                                                                                                                                       :
                                                                                                                                                 -l                     !.
i                 !
                                                     .                             i                    !                                           l                                  :
i

TABLE A.1                                                               .
PREOPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 

==SUMMARY==

(Page 6 of 6)                                    .
River Bend Station                      Docket Number 50-458 West Feliciana Parish, Louisiana        Reporting Period: 1/1/83 - 10/31/95 NOTES:
: 1. Lower Limit of Detection (LLD) as defined in RBS Technical Specifications (NUREG-ll72).
: 2. Mean and range based on detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses. (f)
: 3. For each of the TLD locations in 1985, a value equal to 1/3 of its 4th Quarter gamma dose is used to simulate a " quarterly" measurement for October, 1985.
: 4. Beginning in January, 1985, groundwater was sampled from one upgradient (WU - control) and one downgradient (WD - indicator) well; previously groundwater was sampled from construction dewatering wells.
: 5. The upstream surface water sampling location (SWU) is used as a " control" for drinking water analyses comparisons.
: 6. The values listed for K-40 were derived from the (then) incipient in-house analytical program.
>       7. The values listed for the control location for milk were derived from the (then) incipient in-house i         analytical program. Training of personnel in calibration and analytical methods delayed sample y          preparation and counting. As a result, the required LLDs were not met in 2 out of 8. I-131 analyses; 1 out of 9 Cs-134 analyses; 1 out of 9 Cs-137 analyses; 2 out of 9 Ba-140 analyses; and 4 out of 9 La-140 analyses. Similarly, the required LLD for I-131 in broadleaf vegetation was not met in 1 out of 11 analyses.   (See discussion of Program Exceptions in Preoperational Radiological Environmental Monitoring Report for 1985.)
s i

4       %
            .x        .
3                                _
                                                          = RIVER: BEND STATION.
: RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR.1986=
          , 4 APPENDIX B i                      L Summary of Observations Related to the Chernobyl Accident Certain results of -the River Bend . Station. Radiological Environmen-tal Monitoring -Program :(RENF) for.1986 reflect the' influence of fallout            ,
                        -from releases associated with an' accident at Chernobyl, Russia. The accident began:on' April: 26, 1986, when a graphite-moderated ~ reactor ig--
nited. The initial plume of-airborne radioactive fission products moved northwest through Poland and then -north toward Scandinavia during -the period from April'26_through'29. The contaminants reached central.Eu-rope on-April 29/30, and had spread over western Europe by.May 5. )From-
                        - May 5'on, components of'th'e Chernobyl releases were detected in-Turkey,-
Japan, Korea, and the United States. A. P. Hull of the Brookhaven
      "             ,     National. Laboratory, 'in a report - titled ," Preliminary- Dose Assessment of the Chernobyl Accident," noted that the Chernobyl plume-included the following nuclide mix:
Zr-95             Sb-127            I-133         .La-140 Nb-95            -Te-129m           I-135'         Ce-141 Mo-99             Te-131m           Cs-134         Ce-144'-
                                         ' Re-103 -          Te-132           Cs-136.         Np-239-Ru-106            I-131.            Cs-137 Cd-115            I-132            Ba-140                            -
Measurable amounts of same of these nuclides were wash'ed by rain onto southern' Louisiana vegetation during'.the.second week of May, 1986.
The Nuclear Energy Division of' the Lousiana Department of Environmental'
                        - Quality -(LNED) first detected the fallouts (as 1-131) in rainwat'e'r col-lected11n Baton Rouge on May 10. .The.RBS REMP program measured I-131 in
                         - duplicate milk' samples collected 6 -km east-southeast. of the plant .on May
                          -12 (1.8 and = 1.9 pCi/ lite'r) . These and'other REMP measurements were periodically telephoned to the Nuclear. Regulatory Commission Operations Center-during the ensuing weeks, as requested by I&E Information Not; .            .,
86-12. 1Information was also frequently exchanged with the LNED. : RBS efforts were intensified in order to accumulate as much data as.
possible:
Air Particulate Filters - gamma isotopic . analyses performed on
                                                                       -individual filters weekly, instead of quarterly composites.
Surface Water                 - gamma isotopic analyses per_ formed on weekly grab samples, instead of monthly composites.
Milk                          - sampled / analyzed nine times during May/ June, often in duplicate or triplicate,-instead of twice each month.                                  ,
B-1 r
j

r J.
Precipitation                 -Three samples collected in May (this medium not normally sampled).
Vegetation                  _ Four samples of forage from REMP milk indicator location in May/ June (this medium not normally sampled at this location).
Gross beta activities on air particulate filters increased by a factor of about 3 during weeks 7 through 10 of the second quarter of 1986 at both indicator and control locations (Figure B.2). In generat, there was no discernible increase in gross beta'actitivities in surface water during this period.         However, a slight increase was noted in the RBS Discharge Line samples as reflected in the following sequence:
March 1986 composite        - 4.18 pCi/ liter gross beta April 1986 composite        - 6.38 pCi/ liter gross beta May 1986 composite          - 9.85 pCi/ liter gross beta June 1986 composite         - 9.01 pCi/ liter gross beta July 1986 composite         - 4.91 pCi/ liter gross beta This increase may be attributable to entrainment of Chernobyl-related airborne particulates by River Bend's m2chanical draft cooling towers.
Gamma isotopic analyses of individual (weekly) air particulate filters and charcoal cartridges measured Iodine-131, Cesium-137, and Ruthenium-103 as follows:
SAMPLING PERIOD LOCATION                         5/12 - 5/19        5/19 - 5/27       5/27 - 6/2
                                      .. 1-131 (E-2 pC1/ cubic meter) ...
AAl                              8.4                   9.5 AB1                              8.8                   9.1 AR1                              9.8                   9.0 AKS                              8.4           (25.2 pCi/ filter)
API                              8.2                  11.9 AQS2                               8.2                  11.7 ALC                              9.4                   8.6 AGS                              9.4                  10.9 AHS                             10.3                  11.3
                                    . . . Cs-137 (E-2 pCi/ cubic meter)      ...
API                                                    2.9 AGS                                                                   2.5 AHS                              2.7                   3.0
                                    . . . Ru-103 (E-2 pCi/ cubic meter)      ...
AA1                                                    4.8 AB1                                                    4.0 ARI                               2.4                  4.5 AQS2                                                                    2.4 ALC                                                    3.2 AHS                                                    3.9 B-2                                    :
I

FIGURE'B.1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
                                                            -AIR PARTICULATE FILTER ANALYSIS GROSS BETA

==SUMMARY==
IUR
                                                                    .SECOND QUARTER 1986 GROSS BETA BY IDCATION (pCi/m3)
WEEK        ------------------------------------------------------------------------------
ENDING        AA-1         AB-1         AR-1        AK-S       -AQ-S2         AP-1        AL-C   AG-S     AH-S 04/07/86      0.019        0.024       0.022        0.019        0.021       0.024        0.006  0.026- 99.999 04/14/86      0.015      .0.021        0.022        0.021        0.020       0.022        0.023  0.025    0.021 04/21/86      0.021        0.023       0.021        0.020        0.023       0.024        0.021  0.025    0.019 04/28/86      0.024        0.029       0.026        0.026        0.025       0.029        0.026  0.031    0.025 05/05/86      0.007        0.024       0.027        0.024        0.023       0.028        0.028  0.026    0.026
                  -t 05/12/86        0.032        0.030       0.033        0.030        0.032       0.033        0.031  0.038    0.029 :
: 05/19/86       0.056        0.098       0.098        0.089        0.086       0.092        0.084  0.103    0.090 :
: 05/26/86       0.100-       0.125       0.094
* 0.070       0.117        0.094  0.099   -0.119 :
: 06/02/86       0.085        0.081       0.085
* 0.092       0.085        0.091  0.104    0.124 :
: 06/09/86      ,0.047        0.042       0.062        0.045        0.044       0.058        0.048  0.056    0.046 :
: 06/16/86--     0.032        0.031       0.034        0.029        0.027       0.032        0.034  0.036    0.027 :
06/23/86      0.022        0.017       0.021        0.021        0.018       0.019        0.020  0.020    0.018 06/30/86      0.031        0.028       0.029        0.028        0.026       0.032        0.031 :0.023    0.029
                .
* Data for this week lost due to equipment malfunction.
l B-3

r The intensified sampling of vegetation at RBS REMP locations in May-and June, 1986, detected the following concentrations (pCi/kg wet) of ganna-emitting nuclides:
LOCATION (DATE)                       I-131      Cs-134     Cs-137     Ru-103 MF2 (5/14/86)                          63.9                  25.6 GQC (5/15/86)                         100 G1 (5/20/86)                           92.2                  46.1       18.3 MF2 (5/20/86)                         267         22.2       42.0       33.0 G2 (5/22/86)                           45.8 MF2 (5/22/86)                         338         22.0       44.1       32.2 G2 (5/28/86)*                          23.0                             11.0 G1 (6/4/86)                            17.2 G2 (6/4/85)                            19.6                  25.0       22.8 MF2 (6/6/86)                           46.3                  43.3       22.5
* This sample emitted a photopeak identified as Arsenic-76 at 23.4 pCi/kg; when recounted 24 hours later the peak was no longer present.
The sequence of initial discovery, build-up, and tapering off of radionuclide concentrations (pCi/ liter) in milk from the two RBS REMP locations is well-illustrated in the following summary, which includes the results of analyses of replicate samples:
LOCATION (DATE)                I-131             Cs-134             Cs-137 MF2 (5/12/86)                 1.8/1.9 MF2 (5/14/86)                 3.2/3.1 MQC (5/15/86)                   2.5 MF2 (5/16/86)                 6.2/6.1                               2.7/2.5 MF2 (5/20/86)                  14.1                 1.1               4.0 MF2 (5/22/86)              10.1/9.4/10.1       1.4 (1 of 3)       6.4/5.7/5.2 MF2 (5/29/86)*                6.9/6.9          1.9 (1 of 2)         4.4/4.8 MQC (6/3/86)                  1.8/1.9          1.3 (1 of 2)         3.2/2.4 MF2 (6/6/86)                    1.6                                   5.2 MF2 (6/12/86)               0.8 (1 of 2)                            3.9/4.2
* This cample emitted a photopeak identified as Zinc-69m at 10.5 pCi/ liter; when recounted 24 hours later the peak was no longer present.
A sample of precipitation collected at RBS on 5/18/86 contained 18.5 pCi/ liter of I-131. On 5/25/86, rain approaching Baton Rouge from the southwest was sampled at 1345 hrs and found to contain 19.1 and 6.0 pCi/ liter of I-131 and Ru-103, respectively.       Two hours later, rain approaching Baton Rouge from the west-northwest (and from a higher alti-tude) was sampled and found to contain 3.0 and 1.8 pCi/ liter of I-131 and Ru-103, respectively.
B-4

l'      ,
c    ,   .
Although the levels of Chernobyl-related airborne contamination were transitory and extremely low (relative to those observed in north-ern and central Europe), they provided an opportunity for the RBS REMP and its LNED counterpart to demonstrate the ability to detect and mea-sure such materials. Throughout the period of intensified monitoring there was general consistency in the results of the respective programs.
The unusual opportunity to study the behavior of radioiodine in environmental media demonstrated that oven-drying of milk or vegetation seems not to significantly affect the subsequent analytical results.
This phenomenon was first observed in the RBS Environmental Scryices Group (ESG) laboratory on milk samples collected on 5/20/86. The milk was processed with ion exchange resin in the usual manner, then dried and counted for gamma-emitting nuclides. The resin extract contained 10.5 pCi/ liter of I-131, and the same milk, dried after resin extrac-tion, containeo 3.6 pCi/ liter of I-131. This observation was reported to LNED personnel, who stated that they had just observed essentially equivalent I-131 concentrations, before and af ter oven-drying, on a sam-ple of vegetation.
An experiment was then performed on triplicate milk samples col-lected at MF2 on 5/22/86. One sample was stirred in a 4-liter beaker with ion-exchange resin, the milk decanted from the resin, and then ove n-d rie d . The second sample was passed through the same amount of resin in an ion-exchange column, then dried.        The third sample was dried with no prior treatment. Results of gamma isotopic analyses of the two resin extractions and the three dried portions were (in pCi/ liter):
RESIN           RESIN         DRIED      TOTAL (SPUN)         (COLUMN)        MILK      I-131 Sample A                   7.8              -
2.3         10.1 Sample B                    -
8.5           1.6         10.1 Sample C                    -               -
9.4          9.4 The investigation was continued on duplicate milk samples collected at MF2 on 5/29/86.      In one sample, the resin extract contained 5.6 pCi/ liter and the dried portion contained 1.3 pCi/ liter, for a total of 6.9 pCi/ liter of I-131.      Exactly the same I-131 concentration was mea-sured in the other sample, which was merely oven-dried. A set of dupli-cate samples collected from MQC on 6/3/86 yielded 1.8 and 1.9 pCi/ liter of I-131, respectively, when processed by resin-extraction / drying versus only oven-drying. By 6/12/86, I-131 was barely detectable in kBS milk samplec. Although more data would be desirable in drawing conclusions, the foregoing strongly suggests that oven-drying of environmental media does not significantly affect (volatilize) radioiodine, at least in the form (s) released as in the case of the Chernobyl accident. It would have been interesting to determine the chemical species (e.g., metallic iodide, iodate; molecular iodine; organic iodide) involved.
B-5 L_

s i
GULF STATES                           UTILITIES COMPANY RIVER BEND STATION     POST OFFICE BOX 220         ST FRANC 15VILLE. LOUIStANA 70775 ARE A CODE 504     635 6094         346-8651 April 28, 1987 RBG 25845 File Nos. G9.5, G9.25.1.4 U.S. Nuclear Regulatory Commission Document Control Desk                                                                                                                   i Washington, D.C. 20555                                                                                                                 =
t Gentlemen:
River Bend Station - Unit 1 Docket No. 50-458 Enclosed is the Annual Radiological Environmental Operating Report for                                                                 \ '
the period of January 1 through December 31,                                        1986.               This report is                 (
submitted in accordance with Technical Specification 6.9.1.7 of Appendix A to River Bend Station (RBS) License Number NPF-47.
Sincerely, s f-                       }
                          /
J. E. Booker Manager-River Bend Oversight River Bend Nuclear Group JEB/          /JVC/je Enclosure cc:   U.S. Nuclear Regulatory Commission 611 Ryan Plaza, Suite 1000 Arlington, TX 76011 NRC Resident Inspector P.O. Box 1051 St. Francisville, LA 70775 h>
                                                                                                                                  'l               s\
_ .   . -.}}