ML021260072

Annual Environmental & Annual Radiological Environmental Operating Reports

ML021260072
Person / Time
Site:	South Texas
Issue date:	04/29/2002
From:	Gerry Powell South Texas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NOC-AE-02001314
Download: ML021260072 (55)

Text

SEwmlwM Nuclear Operating Company South Texs Project Electrc Genemrain Station PO. Box 289 Wadsworth Texas 77483

-AAv-April 29, 2002 NOC-AE-02001314 10CFR50.36b U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 2001 Annual Environmental and Annual Radiological Environmental Operating Reports Pursuant to the South Texas Project (STP) Unit 1 Operating License NPF-76, Unit 2 Operating License NPF-80 Appendix B, Environmental Protection Plan (Nonradiological), and Technical Specification 6.9.1.3, attached are the 2001 Annual Environmental and Annual Radiological Environmental Operating Reports.

If you have any questions, please contact J. D. Sherwood at (361) 972-8766 or me at (361) 972-7566.

G.T. Powell

Manager, Health Physics RDP

Attachment:

2001 Annual Environmental and Annual Radiological Environmental Operating Reports.

O:WP\\NL\\NRC-AP\\RREP-2002\\02001314 STI 31439136

NOC-AE-02001314 Page 2 cc:

(paper copy)

(electronic copy)

Ellis W. Merschoff Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852 Richard A. Ratliff Bureau of Radiation Control Texas Department of Health 1100 West 49th Street Austin, TX 78756-3189 Cornelius F. O'Keefe U. S. Nuclear Regulatory Commission P. 0. Box 289, Mail Code: MN116 Wadsworth, TX 77483 A. H. Gutterman, Esquire

• Morgan, Lewis & Bockius LLP M. T. HardtlW. C. Gunst

• City Public Service Mohan C. Thadani

• U. S. Nuclear Regulatory Commission R. L. Balcom

• Reliant Energy, Inc.

A. Ramirez

• City of Austin C. A. Johnson*

AEP - Central Power and Light Company Jon C. Wood

• Matthews & Branscomb C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704

• Attachment not included with electronic copies O:WP\\NL\\NRC-AP\\RREP-2002\\02001314 STI 31439136

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-flu Please visit our web site at http://www.stpnoc.comn T

he 2001 Annual Environmental Operating Report for the South Texas Project Electric Generating Station combines in one report the requirements for the Annual Environmental Operating Report found in Appendix B to Operating License Nos. NPF-76 and NPF-80 and requirements for the Annual Radiological Environmental Operating Report found in part A of the station's Offsite Dose Calculation Manual.

Photographs By: Steve Antonio Gwenna Kelton Faith V. Perez Carolyn Smith STP Photo Library Graphics Design & Layout: Ana M. Perez

Authored by:

Technical Review:

Approved by:

Completed in accordance with Technical Specifications for United States Nuclear Regulatory Commission License Nos.

NPF-76 & NPF-80 April 2001 Gordon E. Williams, CHP Health Physicist Health Physics Division and P

eW n TrAis, J.D., CHM Staff Consultant Chemistry Division Leonard M. Earls, Ph.D., CHP Health Physicist Health Physics Division Gerald T. Powell Manager Health Physics Division 2001 Annual Environmental Operating Report SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

S7 Tabf of Contents Page Executive Sum m ary......................................................................................................................

1-1 Site and Area Description.............................................................................................................

2-1 N on-Radiological Environm ental Introduction and Sum m ary.........................................................

3-1 Non-Radiological Environm ental Operating Report......................................................................

4-1 V Environmental Conditions

• Aquatic and Ecological M onitoring...........................................................................

4-1

• W ater Quality M anagem ent.....................................................................................

4-2

• Air Quality M anagem ent.......................................................................................

4-5

• N on-Radioactive W aste M anagem ent......................................................................

4-6

• Chem ical Control and M anagem ent..........................................................................

4-8 V Environm ental Protection Plan Status..............................................................................

4-9 Radiological Environm ental Introduction and Sum m ary.................................................................

5-1 Radiological Environm ental Operating Report...............................................................................

6-1 V Program Description.......................................................................................................

6-1 V Analysis of Results and Trends........................................................................................

6-5 V Land U se Census..........................................................

.......................................... 6-8 V Quality Assurance...........................................................................................................

6-9 List of Tables V Table 1: Radiological Environm ental M onitoring Program..............................................

6-11 V Table 2: Sam ple M edia and Location Descriptions........................................................

6-13 V Table 3: 2001 Radiological Environmental M onitoring Program Analysis Summ ary..........................................................................

6-17 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

Tab e of Contents Page List of Figures Figure 4-1:

1997 Groundwater Pumpage Matagorda County...........................................

4-2 Figure 4-2:

Historical Groundwater Usage.......................................................................

4-3 Figure 4-3:

2001 W ater U se Sources..............................................................................

4-3 Figure 4-4:

2001 Non-Radioactive Waste Management...................................................

4-6 Figure 4-5:

Hazardous Waste Generation H istorical C om parison...................................................................................

4-7 Figure 4-6:

2001 Non-Radioactive Waste Generation......................................................

4-8 Figure 6-1:

Radiological Environmental Monitoring Program Designated Sample Location Map (Off Site)....................................

6-2 Figure 6-2:

Radiological Environmental Monitoring Program Designated Sample Location Map (on Site).....................................

6-3 Figure 6-3:

Radiological Environmental Monitoring Program Zone Location M ap.........................................................................

6-4 Figure 6-4:

Historical Comparison of Average Q uarterly B eta A ctivity...................................................................................

6-5 Figure 6-5:

Environmental Dosimeter Comparisons..........................................................

6-5 Figure 6-6:

Historical Comparison of Cobalt-58 and Cobalt-60 in Main Cooling Reservoir Sediment..............................................................

6-6 Figure 6-7:

Calculated Cumulative Curies of Cobalt-60 in the M ain Cooling Reservoir........................................................................

6-6 Figure 6-8:

Historical Comparison of Tritium Added to and Remaining in the Main Cooling Reservoir................................................

6-7 Figure 6-9:

Historical Comparison of Tritium Activity in Surface W ater............................................................................................

6-8 Figure 6-10:

2001 Radiological Laboratory Quality Assurance Program Perform ance....................................................................................

6-9 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

I Ai Executive Summary his report describes the environmental monitoring programs, radiological and non-radiological, conducted at the South Texas Project during 2001. Included in this report are the Environmental Protection Plan Status, the results of the Radio logical Environmental Monitoring Program and the Land Use Census.

Radiation and radioactivity in the environment are constantly monitored within a 15-mile radius of the South Texas Project. Sam pling locations are selected using weather, land use and water use information. Two types of sam pling locations are used. The first type, control stations, are located in areas that are beyond measur able influence of the South Texas Project or any other nuclear facil ity. The sample results from these stations are used to explain radia tion from sources other than the South Texas Project. Indicator stations are the second type of sta tions. The samples from these sta tions measure any radiation con tributed to the environment by the project. Indicator stations are lo cated in areas close to the South Texas Project where any plant re leases would be at the highest con centration.

Prior to initial operation of the South Texas Project, samples were collected and analyzed to determine the amount of radioac tivity present in the area. These results are used as a "pre-opera tional baseline." Results from the indicator stations are compared to both current control sample re sults and the pre-operational baseline values to determine if changes in radioactivity levels are attributable to station operations or other causes such as previous nuclear weapons testing programs and natural variations.

Radioactivity levels in the South Texas Project's environ ment frequently fall below the minimum detection capabilities of the state-of-the-art scientific in struments. Samples with radiation levels that cannot be detected are below the Lower Limits ofDetec tion. The United States Nuclear Regulatory Commission requires that equipment used for radiologi cal monitoring must be able to detect specified minimum limits for certain types of samples. This ensures that radiation measure ments are sufficiently sensitive to detect small changes in the envi ronment. The United States Nuclear Regulatory Commission also has a required "reporting level." Licensed nuclear facilities must prepare a special report and increase their sampling if any mea sured radiation level is equal to or greater than this reporting level.

No sample from the South Texas Project has ever reached or ex ceeded a reporting level.

Measurements made are di vided into four categories or path ways based upon how the results may affect the public. Airborne, waterborne, ingestion and direct radiation are the four pathways that are sampled. Each pathway is described below.

V The airborne pathway is sampled in areas around the TEASOE TAM PEFRAC I

During 2001, as in each previ ous year, operation of the South Texas Project created no ad verse environmental effects or health risks. The maximum ra diation exposure calculated for a hypothetical person living at the boundary of the South Texas Project during 2001 was less than one millirem. For reference, this dose may be compared to the 360 millirem average annual radia tion exposure to people in the United States from natural and medical sources. Natural radiation sources in the environment contrib ute most of the radiation exposure to humans while nuclear energy operations contribute less than one millirem.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

2001 Environmentaf Report South Texas Project by mea suring radioactivity of iodine and particulate air filters. The 2001 airborne results were similar to pre-operational lev els with only naturally occur ring radioactive material unre lated to the operation of the South Texas Project detected.

V The waterborne pathway in cludes samples taken from surface water, ground water and drinking water. Also in cluded in this path are sedi ment samples taken from the Main Cooling Reservoir and the Colorado River. Iodine 131 was identified in the indi cator station on the Colorado River but was also identified in the control station above the Bay City Dam on the Colorado River. This dem onstrates that the Iodine-131 was added to the Colorado River by an industrial or medi cal user of the isotope prior to reaching the environs of the South Texas Project. Tritium was the only man-made iso-tope consistently detected in water samples and was mea sured in the shallow aquifer, the Main Cooling Reservoir and other bodies of water onsite. The average tritium level changed very little in the Main Cooling Reservoir over the past year and remained below United States Nuclear Regulatory Commission re porting limits and within United States Environmental Protection Agency drinking water standards. Sediment samples from the Main Cool ing Reservoir continue to show traces of plant-related isotopes. The amount of plant-related isotopes found in reservoir bottom sediment samples has decreased since 1992 because less Cobalt-60 has been added to the reser voir by plant effluents than has undergone radioactive decay.

As expected, the Cobalt-58 has decreased to below de tectable levels. Offsite sedi ment samples continue to show no radioactivity from the South Texas Project. This in dicates that the station pro duces no detectable effect offsite from this pathway.

V The ingestion pathway in cludes broadleaf vegetation, agricultural products and food products. Naturally occurring isotopes were detected at av erage environmental levels in the samples. Man-made iso topes found in the samples were consistent with values found in pre-operational samples.

V The direct exposure pathway measures environmental ra diation doses using thermolu minescent dosimeters. These results are consistent with the readings from previous years and continue to show no ef fect from plant operations.

The South Texas Project con tinues to operate with no negative effect on the population or the en vironment. The exposure for people living in the area is main tained at less than one millirem per year. Environmental programs at the site monitor known and pre dictable relationships between the operation of the South Texas Project and the surrounding area.

These monitoring programs verify that the operation of the South Texas Project has no detectable impact offsite and is well within state and federal regulations and guide lines. These programs are verified by the state of Texas through col lection and analysis of samples and placement of the state's thermolu minescent dosimeters.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

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,e South Texas Project is

'7ocated on 12,220 acres in I

Matagorda County Texas, approximately 15 miles southwest of Bay City along the west bank ofthe Colorado River. The South Texas Project isjointly owned by Reliant Energy - Houston Light ing & Power Company, Central Power and Light Company, the City of Austin, TX and the City Public Service Board of San An tonio. Until late 1997, the Hous ton Lighting & Power Company was the designated Project Man ager for the owners. In Novem ber of 1997, the STP Nuclear Op crating Company assumed opera tional control of the South Texas Project and responsibility for implementation of all environmen tal programs.

The South Texas Project has two 1,250 megawatt-electric Westinghouse pressurized water reactors. Unit 1 received a low power testing license on August 21, 1987, obtained initial critical ity on March 8, 1988, and was declared commercially operational on August 25, 1988. Unit 2 re ceived a low-power testing license on December 16, 1988, obtained initial criticality on March 12, 1989, and was declared commer cially operational on June 19, 1989. Both units together produce enough electricity to serve over a m

the South Texas 4%roject Works Fossil-fueled and nuclear powered steam generating plants operate on the same principle.

Fuel is used to produce heat to convert water into high-pressure steam. The steam is directed through a turbine to tum a gen erator. In a fossil fuel plant, bum ing coal, lignite, oil or natural gas in a boiler produces the heat. In a nuclear plant, the reactor replaces the boiler and the "fissioning" or splitting of uranium atoms inside the reactor produces the heat.

The fuel for a nuclear reactor is uranium. It is formed into cylin drical ceramic pellets, each about the size ofthe end ofyour little fin ger. One pellet has the energy potential of about a ton of coal.

Millions of these pellets are stacked in fuel rods that are ar ranged into assemblies that make up the core of the reactor. The use ofuranium allows us to con serve natural gas, oil and coal and to avoid the associated produc tion of greenhouse gases.

A reactor starts operating when control rods in the core are withdrawn and fissionbegins. The fuel rods heat water circulating in sealed, stainless steel piping that passes through large heat ex changers called steam generators.

The water in the reactor is pres surized to prevent boiling. This is why the South Texas Project's reactors are called "pressurized water reactors."

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2001 Environmentaf Reyort fK 4-Y This hot, pressurized water heats a separate supply of water in the steam generators to pro duce steam that is directed through the blades of a turbine generator to produce electricity. The steam is then fed to a condenser where a separate supply of cooling wa ter from the reservoir turns it back into water that is then pumped back to the steam generator for reuse. A diagram of the plant water systems is on the preceding page.

In addition to its safety sys tems, the South Texas Project has many built-in physical barriers that would prevent the release of ra dioactive materials in the unlikely event of an accident. The most visible ones are the 200-foot-tall, domed containment buildings with steel-reinforced walls four feet thick. Inside each of these mas sive structures, two more concrete walls provide another 11 feet of shielding. The reactor vessel itself has steel walls six inches thick, and the fuel pellets inside it are sheathed in hardened metal tubes.

Late in 1998 and again in 2001, in a continuation of strong business and industry support for nuclear energy, the International Chamber of Commerce recom mended that delegates at the United Nations negotiations on global climate change include nuclear energy as an option for meeting increased electricity de mand while avoiding greenhouse gas emissions. The International Chamber of Commerce's support reaffirms the significant carbon re ductions achieved by nuclear en ergy in many countries. Nuclear power plants produce approxi mately 20 percent of the nation's electricity while saving the equiva lent of approximately 164 million metric tons of carbon, as well as 2.4 million tons of nitrogen oxide emissions and 5.1 million tons of sulfur doxide, from entering the ea osphere annually.

The Site Sixty-five of the entire 12,220 acres at the South Texas Project are occupied by the two power plants. Plant facilities include a 7,000-acre main cooling reservoir and a 47-acre essential cooling pond. Many smaller bodies of water onsite include wetlands, Kelly Lake, drainage ditches, sloughs and depressions. Much of the land east of the cooling res-SOUTH TEXAS PROJECT ELECTRIC GENERATINS STATION LA

Site Area Descrittion ervoir is leased for cattle grazing.

Approximately 1,700 acres re main in a more natural state as a lowland habitat. A 110-acre wet land habitat area was established in 1996 on previously unused land located northeast of the power plants. The area surrounding the South Texas Project is character ized by coastal plain with farmland and pasture predominating. Local relief of the area is characterized by flat lnd, approximately 23 feet ab a level.

The Area The economic base for this area primarily is agricultural re lated. Most of the land near the site is used for the production of five major agricultural products:

beef, rice, grain sorghum, soy beans and cotton. In addition to the agriculture industry, there is commercial fishing in the lower Colorado River, East and West Matagorda Bays, Intracoastal Waterway and the Gulf of Mexico. Currently shrimp, oys ters, and crab are the predomi nant commercial fish while fin fishes have been commercially less important in recent years.

Although the surrounding area is heavily cultivated, significant amounts of woodlands, thicket, brush, fields, marsh and open water exist to support wildlife.

The area lies in the southern re gion of the central flyway and is host to an abundance of migratory birds. The local estuary environ ments provide the necessary habi tat for a variety of fish types to complete their life cycles. The area also affords opportunity for recreational hunting and fishing.

The South Texas Project is home to many species of animals. Our inhabitants include American alli gators, a family of osprey, bald eagles and deer. In winter, literally hundreds of thousands of water fowl, principally migratory geese as well as white pelicans and many species of tern, have found that the plant's 7,000-acre cooling res ervoir provides a good resting place during their migrations. The station also established a man made wetland habitat in 1996 that attracts an increasing diversity of migratory fowl and other wildlife.

Since 1997, the 15-mile-wide area that includes the South Texas Project has had the highest num ber of bird species nationwide in the National Audubon Society's annual Christmas Bird Count.

The climate of the region is subtropical maritime, with conti nental influence. It is character ized by short, mild winters and long, hot and humid summers.

Rainfall is usually abundant throughout the year with an annual average of approximately forty-two inches. The prevailing wind direction is from the south southeast, shifting to north-north east for short intervals during the winter months.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

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Non-Radlofogicaf Environmentaf Introduction and Summanry he South Texas Project is ommitted to the produc tion of electricity in a safe, reliable, and economical manner using nuclear energy. The station's programs, policies and business plan objectives also incorporate a com mitment to environmental excellence and sound environmental manage ment. The dedication ofstationper sonnel who develop, implement and monitor site environmental protec tion programs and compliance ex emplify this commitment.

The station's commitment to sound environmental management is illustrated by the following en vironmental successes in 200 1:

Significant reductions in non radiological waste generation Responsible management and conservation of water and air resources.

Everyone has a responsibility to protect the environment. Com mitment to environmental respon sibility is an integral component of the South Texas Project operat ing policy. This responsibility reaches further than mere compli-ance with laws and regulations to encompass the integration of sound environmental practices into our daily operational and business decisions. The people at the South Texas Project understand the need to balance economic, operational and environmental is sues for the benefit of the station and the public. The South Texas Project understands that we must hold ourselves to the highest prin ciples of responsibility for our envi ronmental and station activities. V Nonradiological environmental conditions and performance at the South Texas Project during 2001 remained satisfactory and demon strated that the South Texas Project continued to operate in an environmentally responsible man ner. The South Texas Project achieved and maintained expected high standards of environmental performance and compliance throughout 2001.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

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Non-Radaofogicaf Environmentaf Oyerating Ryort A

Environmental Conditions his section of the report describes the South Texas Project's non-radiological environmental program perfor mance and environmental condi tions from January 1 through De cember 31, 2001.

The STP Nuclear Operating Company en vironmental staff closely monitors environmental conditions and per formance at the South Texas Project. Reliant Energy, Inc. pro vided support and technical as sistance to the South Texas Proj ect QUATIC AND COLOGICAL ONITORING The South Texas Project lo cation falls within the Texas Land Resource Area designation as coastal prairie and can be divided into two broad ecological areas based on topography, soils and vegetation. The bottomland area is a swampy, marshy area that oc cupies approximately 1,700 acres of the site near the Colorado River. This area provides an im portant habitat for birds and other wildlife. A spoil impoundment constructed in 1972 by the United States Army Corps of Engineers is included in this area. In addi tion, a 110-acre wetland habitat area that attracts a variety of bird groups and other wildlife was es tablished in 1996 on previously unused land located northeast of the power plants. The remaining area of the site offers diverse habi tats for mammals and several types of birds. South Texas Project en vironmental staff regularly moni tor the site's environs for chang-ing conditions. Ecological condi tions onsite in 2001 remained gen erally unchanged and satisfactory.

In 1996, the South Texas Project and Houston Industries Incorporated (now Reliant En ergy-HL&P) initiated ajoint ef fort with Ducks Unlimited, Texas Parks and Wildlife, the United States Fish and Wildlife Service, and the United States Department of Agriculture Natural Resources Conservation Service to establish a 110-acre wetland habitat for migratory waterfowl at the station.

This habitat area immediately at tracted a variety of bird species and other wildlife and has contin ued to support an increasing di versity of plants and animals. The wetland project received the Ducks Unlimited Habitat Conser vation Award in 1996 and a United States Department of Ag riculture Conservation Award in 1999 for habitat preservation. An observation trail adjacent to the wetland habitat allows easy ac cess and viewing by visitors.

The South Texas Project and the wetland habitat project are located on the state-sponsored Great Texas Coastal Birding Trail that spans the entire Texas Gulf Coast from Brownsville to the Louisiana border. Several bird species listed on the state and fed eral threatened or endangered species lists have been observed at the wetland habitat and else where onsite. These include the bald eagle, peregrine falcon, wood stork, white-faced ibis, wood ibis and white-tailed hawk. Additional migratory and resident bird spe-cies have been observed during informal surveys of the site's di verse natural and man-made habi tats.

The South Texas Project con tinues to provide vital habitat for more than 125 different species of wintering and resident birds, in cluding several species of tern and white pelicans. In 1998, a small number of black skimmers established nests on a remote parking lot at the station. Special precautions were taken to protect the black skimmers' nesting area in hopes that this species would continue to return to the site. In 1999, the skimmers and a small population of least terns did re turn in increased numbers. The nesting populations of the return ing skimmers and least terns ap peared relatively stable in 2001.

Intensive bird nesting continues throughout the lowland habitat, particularly in a heron rookery around the perimeter of Kelly Lake. U. S. Fish and Wildlife Service biologists estimate that over half of Texas' breeding adult Gull-billed Tern population nest on the internal dikes of the Main Cooling Reservoir. The U. S. Fish and Wildlife Service considers nesting of Gull-billed Terns in Texas uncommon.

Although no specific site aquatic monitoring studies were required in 2001 by the United States Environmental Protection Agency or the State of Texas, the South Texas Project continues to monitor important wildlife species to detect population changes.

These observations indicate that SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

Figure 4-1 the site provides high-quality habi tat in which a wide range of ani mals live. The site also continues to attract extensive wildlife popu lations, offering a refuge for resi dent species as well as seasonal migrants. The lowland habitat lo cated between the Colorado River and the east bank of the Main Cooling Reservoir offers a significant source of water year round. These natural resource areas, in concert with numerous additional wetland and grassland areas, offer the key ingredients necessary to sustain the extensive wildlife population at the South TERUALectT TRQUALITY 4AGEMENT Water is an essential compo nent in electricity production, and all electric utilities must comply with extensive federal, state and local water regulations. These regulations govern virtually every aspect of business operations at the South Texas Project. Water usage and wastewater treatment onsite are regulated under the Safe Drinking Water Act, the Federal Clean Water Act and the Texas Water Quality Act. Collectively, these acts provide for the safe guarding of public drinking water supplies and maintaining the integ rity of state and federal waters.

The SouthTexas Projectuses both surface water and groundwater for station purposes. Groundwa terprovides onsite drinking water for station personnel, replenishes 1997 Matagorda County Groundwater Pumpage (Texas Water Development Board) 34%

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the Essential Cooling Pond, and is used for other industrial pur poses onsite. Surface water from the Main Cooling Reservoir and the Essential Cooling Pond is used as cooling water for plant activi ties. Water from the Colorado River replenishes the Main Cool ing Reservoir via intermittent pumping periods. Surface water diverted to the Main Cooling Res ervoir from the Colorado River accounted for approximately 98 percent of the water used at the South Texas Project in 2001.

Figure 4-1 illustrates the vari ous users of groundwater sources in Matagorda County in 1997 based on information distributed by the Texas Water Development Board. At that time, the South Texas Project accounted for only 10 percent of the county's groundwater usage. Consistent with station environmental prin ciples encoumging efficient water usage and conservation, the sta tion has carefully managed its groundwater usage over the last

Non-Raafofogicaf Environmentaf Oyerating Reyort five years in order to conserve this important resource. Station groundwater usage remained con sistent with previous years. (Ref erence Figure 4-2) Groundwater usage only accounted for approxi mately two percent of the water utilized in 2001 by the South Texas Project. (Reference Figure 4-3)

Most of the water used by the South Texas Project is needed to condense steam and provide cooling for plant generating sys tems. The majority of this water is drawn from and returned to the station's Main Cooling Reservoir.

The Main Cooling Reservoir is a 7,000-acre, above grade, off channel reservoir capable of im pounding 202,600 acre-feet of water at its maximum level. Res ervoir makeup water is withdrawn intermittently from the adjacent Colorado River. In addition, the Essential Cooling Pond, a 47 acre, below grade, off-channel reservoir that supplies water to cool crucial plant components is capable of impounding 388 acre-feet of water. Various water rights permits, contractual agreements and compliance documents autho rize the South Texas Project to maintain these reservoirs, impound water diverted from the Colorado River, and to circulate, divert and use water from the reservoirs for industrial purposes to operate the plant. These permits also limit the rate of diversion from the Colo rado River. The South Texas Project diverted 62,255 acre-feet Historical Groundwater Usage South Texas Project 1500 1450 1400 P

1350 S1300 1250 1200 1150 Figure 4-3 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION from the Colorado River in 2001 for the Main Cooling Reservoir fill operations while preserving ad equate freshwater flow conditions for downstream bay and estuarine environments.

Existing federal and state water quality standards are imple mented and enforced through the National Pollutant Discharge Elimi nation System (NPDES) and the Texas Pollutant Discharge Elimi nation System (TPDES) permit programs to restore and maintain the nation's and state's waters. In 1998, the State of Texas assumed authority to administer and imple ment the federal NPDES pro gram. Accordingly, the federal and state requirements were consoli dated in November of 2000 into one wastewater discharge permit for the station under the TPDES permit program. Under this per mit program, the South Texas Project monitors, records and re ports the types and quantities of pollutants from wastewater dis charges to ensure that we meet or 1996 1997 1998 1999 2000 2001 Year Figure 4-2 2001 Water Use Sources South Texas Project Surface Water 98%

Groundwater 2%

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2001 Environmentaf Reort exceed the stringent levels set in the permit. A monthly monitoring report is submitted to the Texas Natural Resource Conservation Commission for wastewater dis charges. Reports identifying ground and surface water use are also submitted to the Texas Natu ral Resource Conservation Com mission and Texas Water Devel opment Board.

The South Texas Project un derstands that the water resources of the state are a critical natural South Texas Project is processed and discharged to the onsite Main Cooling Reservoir to be re-used by the station as cooling water for plant systems. No water was re leased from the reservoir in 2001.

The station continued its outstand ing wastewater discharge compli ance performance record in 2001.

Wastewater discharges met state and federal water quality standards demonstrating a 100 percent com pliance record for the year while conserving and maximizing efficient in storm water runoff. In Sep tember of 1998, the United States Environmental Protection Agency modified the storm water permit program to require facilities, such as the South Texas Project, per mitted under the baseline general permit to obtain permit coverage under a multi-sector general storm water permit. Accordingly, the station filed a Notice of Intent for transfer from the General Permit to the Multi-Sector General Per mit with the United States Envi-

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resource requiring careful manage ment and conservation to preserve water quality and availability. Ac cordingly, the station in 1998 joined efforts with other organi zations-including the Colorado River Basin regional water plan ning group and the Lower Colo rado River Valley Federation that also seek to achieve these goals. The South Texas Project continues to explore and support efforts focusing on the efficient use of water resources and reduction of water waste.

Wastewater generated at the water usage at the station.

In addition to the wastewa ter discharge permit programs dis cussed above, the Federal Clean Water Act, as amended in 1987, requires permits for storm water discharges associated with indus trial activity. The South Texas Project Storm Water Pollution Prevention Plan, implemented since October of 1993, ensures that potential pollution sources at the site are evaluated, and that ap propriate measures are selected and implemented to prevent or control the discharge of pollutants ronmental Protection Agency in 1998. The Texas Natural Re source Conservation Commission issued a TPDES Multi-Sector General Pen-nit in August of 2001.

The station filed a Notice of In tent in November of 2001 to ob tain coverage under the state per mit and the station's Storm Water Pollution Prevention Plan was modified accordingly to reflect these changes. This plan is a working document that is revised whenever there is a change in de sign, construction, operation or maintenance that has a significant SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION M777'7ý I Ph.f. k,. G,

Non-Radhofogicaf Environmentaf Oyerating Reyort effect on the potential for the dis charge of pollutants from the station.

Following a severe drought in 1996, the Texas Legislature recognized the need to address a wide range of state water re source management issues. In 1997, the Texas Senate drafted legislation known as Senate Bill 1 to address these issues and to develop a comprehensive state water policy. Towards this end, this legislation required that the Texas Water Development Board create a statewide water plan that emphasizes regional planning. Six teen planning regions were cre ated, each tasked to prepare a regional plan for the orderly de velopment, management and con servation of water resources.

These plans are to be incorpo rated into a State Water Plan in the year 2002. The South Texas Project was chosen to represent the electric generating utility interest for the water-planning region that encompasses the Colorado River Basin.

IR QUALITY S tANAGEMENT Ali & ission sources at the South Texas Project fall under the scope of air pollution regulations promulgated under the Texas Clean Air Act and the Federal Clean Air Act and the numerous associated amendments. The pur pose of these regulations is to pro tect air resources from pollution by controlling or abating air pol lution and emissions. Regulated emission sources at the South Texas Project include fossil-fuel boilers and emergency diesel gen erators, fire-fighting training and other minor maintenance activities.

V Fossil-Fueled Emission Sources Unlike conventional electri cal generating stations, nuclear power plants do not burn petro leum fuel. Therefore, the South Texas Project produces virtually no greenhouse gases or other air pollutants that are the typical by-products of industrial pro duction processes. The use of emissions-free nuclear power is a significant contributor to the preservation of our community's clean air resources. The South Texas Project uses small amounts of fossil fuel for backup and emer gency equipment. The major regulated air emission sources at the South Texas Project include one fossil-fueled boiler and vari ous emergency diesel generators.

The South Texas Project has one oil-fired auxiliary steam boiler available to furnish steam when it is not available from the nuclear steam supply system. In addition to the auxiliary steam boiler, a number of fossil-fueled diesel gen erators are located onsite. These diesels are designed to provide emergency power to various plant systems or buildings in the event of a loss of power. This equip ment is not normally needed for daily operations and the station does not use it to produce elec tricity for distribution. Routine maintenance runs are made to ensure availability if needed and for equipment mainte nance.

V Fire-Fighting Activities The South Texas Project conducts onsite training of se lected employees on proper fire-fighting techniques. Most onsite instruction consists of training on the proper use of a fire extinguisher. Advance no tification of firefighting training sessions is provided to the Matagorda County Environ mental Services and the Texas Natural Resource Conservation Commission as required by state regulation.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

V Title V Federal Operating Permit In 1990, amendments to the Federal Clean Air Act mandated a new permitting program to clearly define applicable air qual ity requirements for affected facili ties such as the South Texas Project. This progmm is commonly known as the Title V Operating Permit Program and is adminis tered by the state. The Texas Natural Resource Conservation Commission issued a Federal Operating Permit in January of 2000 for the South Texas Project granting authority to operate iden tified emission units at the station in accordance with applicable per mit and regulatory requirements.

In accordance with the South Texas Project's Federal Operat ing Permit's reporting require ments, the station reported two minor deviations that occurred in 2001. In October of 2001, a tem porary instrument malfunction oc curred during operation of the station's Auxiliary Boiler. The condition was promptly corrected and no emission limits were ex ceeded. The second deviation occurred in November 2001 when fire extinguisher training for firewatch personnel was inadvert ently conducted on a day not iden tified in the station's open bum notification to the Matagorda Coun~ihnvironmental Services.

"44-RADIOACTIVE 44MANAGEMENT waste management procedures for hazardous and non-hazardous wastes generated at the South Texas Project ensure that wastes are properly dispositioned in accordance with applicable federal, state and local environmental and health regula tions. By regulatory definition, solid waste includes solid, semi solid, liquid and gaseous waste material. The Texas Natural Re source Conservation Commis sion, which administers the Texas Solid Waste Disposal Act and also the federal Resource Conserva tion and Recovery Act program, is the primary agency regulating non-radioactive wastes generated at the South Texas Project. The Texas Natural Resource Conser vation Commission also regulates the collection, handling, storage and disposal of solid wastes, in cluding hazardous wastes. The transportation of waste materials is regulated by the United States Department of Transportation.

The South Texas Project is registered with the Texas Natural Resource Conservation Commis sion as a large quantity generator of industrial solid wastes, includ ing hazardous wastes. Texas lincnieratio. &

Fuel Blending 7.4%

Figure 4-4 c-b SOUTH TEXAS PROJECT ELECTRIC GENERATINE STATION 4

Natural Resource Conservation Commission regulations require that industrial solid wastes gener ated at the South Texas Project be identified to the Commission and these are listed in the Texas Natural Resource Conservation Commission Notice of Registra tion for the South Texas Project.

The registration is revised when ever there is a change in waste management practices at the site.

Waste handling and disposal ac tivities are summarized and docu mented in a waste summary re port for the South Texas Project that is submitted annually to the Texas Natural Resource Conser vation Commission.

Hazardous waste accumula tion at the South Texas Project is limited to amaximum holding pe niod of 90 days. The Resource Conservation and Recovery Act and Texas Solid Waste Disposal Act also require the use of proper storage and shipping containers, labels, manifests, reports, person nel training, a spill control plan and an accident contingency plan.

2001 Nonradioactive Waste Management South Texas Project Recycle 74.3%

Landfill 18.3%

Non-Radaofogicaf Environmentaf Oyerating Reyort Plant personnel routinely inspect areas throughout the site to ensure wastes are not stored or accumu lated inappropriately.

Station policies and regula tions encourage the recycling, re covery or re-use of waste when possible to reduce the amount of waste generated or disposed of in landfills. Approximately 74 per cent of the non-radioactive waste generated at the South Texas Project was recycled or pro cessed for re-use in 2001. The South Texas Project ships waste oil, grease, electrohydraulic fluid, sealants, adhesives, liquid paint and solvent for fuel blending and thermal energy recovery. Used oil, diesel fuels and antifreeze so lutions are sent to a recycling ven-Figure 4-5 dor for re-processing. Lead-acid batteries are returned, when pos sible, to the original manufacturer for recycling or are shipped to a registered battery recycler, thereby reducing the volume of hazardous waste that might otherwise be gen erated. An extensive site paper recycling program results in the collection of several tons of pa per each year. In 2001, the sta tion collected approximately 58 tons of paper for recycling. Ev ery ton of paper recycled saves approximately 17 trees, eliminates approximately three cubic yards of landfill material and saves enough energy to power the av erage home for six months. The station continues to explore new areas where recycling may be ex-panded or initiated.

Non-radioactive solid waste that cannot be shipped for recy cling is shipped for disposal.

Municipal-type trash is trans ported to the county landfill trans fer station for appropriate dispo sition. Construction-related non combustible, inert debris, if gen erated, is placed in the onsite landfill. Waste minimization and source reduction efforts by em ployees allowed the South Texas Project to achieve approximately a 27 percent reduction in normal hazardous waste generated at the site during 2001 (Reference Fig ure 4-5). The volume of hazard ous waste generated at the station is sufficiently low to allow the sta tion to seek re-classification as a SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Hazardous Waste Generation Historical Comparison South Texas Project 70 60 50 S40 10-)__

0 1996 1997 1998 1999 2000 2001 El Hazardous Waste from Cleanup of an Onsite Spill El Hazardous Waste

small-quantity generator (Refer ence Figure 4-6). This option will be farther evaluated in the follow ing year. The station faces spe cial challenges during 2002 due to planned maintenance and the re placement of steam generators in Unit 2. The station, however, is prepared to provide the needed focus and attention to continue to achieve station goals and expec tations in minimizing non-radioac five waste generation and reduc ing sources of hazardous waste.

Hazardous waste accounts for only a small portion of the waste generated at the South Texas Project; however, minimization and reduction of hazardous waste generation where feasible remains an important goal at the station.

Figure 4-6 CAL CONTROL N

AGEMENT The South Texas Project uses standard operating proce dures, policies and programs to mnimize the generation of waste materials, control chemical usage and prevent spills.

The South Texas Project also evaluates chemicals and products proposed for use, which could come in contact with plant com ponents. Site procedures ad dress the evaluation, storage, use, spill control, and disposal re quirements of chemicals. These guidelines assist in reducing wastes, ensure proper packag ing for disposal and mitigate the consequences of inadvertent spillage.

The South Texas Project em phasizes awareness training for spill prevention and maintains sta tion readiness to respond should a spill occur. Spill response team members receive annual refresher training in hazardous material inci dent response. No significant or cn sequential spills occurredin 2001.

2001 Nonradioactive Waste Generation South Texas Project Non-Hazardous Waste 94.3%

Universal Waste 1.0%

Hazardous Waste 2.4%

Used Batteries 2.3%

Non-Radaofogicaf Environmentaf Oyerating Reyort A

Environmental Protection Plan Status he South Texas Project's U...

Environmental Protection Plan was issued in March of 1989 to provide for the protection of non-radiological environmental values during operation of the South Texas Project. This section reviews Environmental Protection Plan non-compliances identified by the plant in 2001 and the associ ated corrective actions taken to prevent their recurrence. Po tential nonconformities are promptly addressed, as iden tified, to maintain operations in an environmentally acceptable manner. The station uses its Corrective Action Program to document these conditions and track corrective actions to completion. Internal assess ments, reviews and inspections are also used to document plant compliance.

This section also reviews non-routine reports submitted by plant personnel and any activities that involved a po tentially significant unreviewed environmental question. A pro posed change, test or experiment is considered to present an unreviewed environmental questions if it concerns:

7I A matter that may result in a significant increase in any adverse environmental im pact previously evaluated in the Final Environmental Statement related to the Operation of South Texas Project, Units 1 and 2 (Docket Nos. 50-498 and 50-499), environmental im-pact appraisals, or in any decisions of the Atomic Safety and Licensing Board; or, A significant change in efflu ents or power level; or, A matter not previously re viewed and evaluated in the documents specified in (1) above, that may have a signifi cant adverse environmental impact.

No unreviewed environ mental questions were identified in 2001.

Events that require re ports to federal, state or local agencies other than the Nuclear Regulatory Commission are reported in accordance with the applicable reporting re quirements. The Nuclear Regu latory Commission is provided with a copy of any such report at the time it is submitted to the cognizant agency. If a non routine event occurs and a report is not required by an other agency, then a 30-day report to the Nuclear Regulatory Commission is required by the Environmental Protection Plan.

No such 30-day or other non routine report of this type was required in 2001. V SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

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Radiofo icaf Environmentaf Introduction and Summary here were three items of interest identified by this program during 2001. A short description of them follows.

7 Cobalt-60 levels in reservoir bottom sediment samples vary but remain within the expected range. The amount of Cobalt 60 in the Main Cooling Res ervoir has decreased because of additional equipment in stalled to reduce radioactive effluents.

V Low level tritium was moni tored in shallow aquifer ground water samples. The shallow well was located within approximately seventy five yards of the Main Cool ing Reservoir dike base. The concentration increased dur ing the year, as anticipated, but remained less than in the Main Cooling Reservoir.

V Iodine-131 was identified in the indicator and the control station on the Colorado River.

This means that the Iodine 131 was added to the river prior to reaching the environs of the South Texas Project.

Iodine-13 1 is routinely used for geological and medical procedures.

Operation of the South Texas Project continues to have no de tectable radiological impact offsite.

Samples analyzed from the off-site sampling stations continue to show no radiological contribution from plant operation. The radiological doses received by the general public from plant operations were less than one millirem which is in significant when compared to the 360 millirems average annual ra diation exposure to people in the United States from natural and medical sources.

The purpose of the Radiologi cal Environmental Monitoring Program is to verify that the South Texas Project is oper ating within its design param eters and to assure that plant effluents do not result in a sig nificant radiological dose to individuals off-site. This ob jective is accomplished by thoroughly evaluating known and predictable relationships between the plant and the en vironment, and performing additional evaluations where unique relationships may exist.

Approximately 900 analyses of air, water, sediment, veg etation and meat samples were performed during 2001.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

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Radtofogicaf Environmentaf Oyerating Reyort

X PROGRAM DESCRIPTION The South Texas Project ini tiated a comprehensive pre-op erational Radiological Environ mental Monitoring Program in July 1985. That program terminated on March 7, 1988, when the op erational program was imple mented. The pre-operational monitoring program data forms the baseline against which operational changes are measured.

Critical pathway analysis re quires that samples be taken from water, air, and land environments.

These samples are obtained to evaluate potential radiation expo sure. Sample types are based on established pathways and experi ence gained at other nuclear fa cilities. Sample locations were determined after considering site meteorology, Colorado River hy drology, local demography and land use. Sampling locations are further evaluated and modified according to field and analysis ex perience. Table 1 lists the mini mum sampling locations and fire quency of collection.

Sampling locations consist of indicator and control stations. In dicator stations are locations on or off the site that may be influ enced by plant discharges during plant operation. Control stations are located beyond the measur able influence of the South Texas Project or any other nuclear facil ity. Although most samples ana lyzed are accompanied by a con trol sample, it should be noted that this practice is not always possible or meaningful with all sample types. Fluctuations in the concen-tration ofradionuclides and direct radiation exposure at indicator sta tions are evaluated in relation to historical data and against the con trol stations. Indicator stations are compared with characteristics iden tified during the pre-operational program to monitor for radiologi cal effects from plant operation.

Several sample identification methods are used to implement the program. Figures 6-1 and 6 2 are maps that identify perma nent sample stations. Descriptions of sample stations shown on Fig ure 6-1 and 6-2 are found in Table

2. Table 2 also includes additional sampling locations and media types that may be used for addi tional information. Figure 6-3 il lustrates the zones used when col lection locations are not perma nent sample stations.

SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION

J Designated Sample Locations e

E-OI4.DW0 Figure6-1 4

1

1 Designated Sample Locations (On Site Sample Locations)

ON SITE SAMPLE LOCATIONS 2X SCALE Figure 6-2 I

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• .I J

i,

S Zone Location Map The zone station number is determined in the following manner.

" The first character of the station number is 'Z' to identify it as a zone station

" The second character is the direction coordinate numbers 1-8

" The third character is the distance from site numbers 1-6.

SOUTH TEXAS PROJECT ELECTRIC OENcRATING STATION

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Figure 6-3

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i 5n YSLS OF RESULTS TRENDS En onmental samples from areas surrounding the South Texas Project continue to indicate no sig nificant radiological effects from plant operation. Analytical values from offsite indicator sample sta tions continue to trend with the control stations. Onsite indicator samples continued to increase or decrease in measured values at their expected rates.

Average quarterly beta activ ity from three onsite indicator sta tions and a single control station for air particulate samples have been compared historically from 1988 through 2001 (see Figure 6-4). The average of the onsite indicators trends closely with the offsite control values. The com parison illustrates that plant opera tions are not having an impact on air particulate activity even at the Sensitive Indicator Stations (#1,

1. 15, and#16). These stations are located near the plant and are lo cated downwind from the plant Figure 6-5 based on the prevailing wind di rection. The beta activity mea sured in the air particulate samples is from natural radioactive mate rial. As a routine part ofthe pro gram, we perform gamuma analy sis on quarterly composites of the air particulate samples to deter mine if any activity is from the South Texas Project. The gamma analysis revealed that it was all natural radioactivity.

Direct gamma radiation is monitored in the environment by Figure 6-4 thermoluminescent dosimeters lo cated at 43 sites around the South Texas Project. The natural direct gamma radiation varies according to location because of differences in the natural radioactive materi als in the soil, its moisture content and the vegetation cover. Figure 6-5 compares the amount of di rect gamma radiation measured at the plant since the fourth quarter of 1985 for three different types of stations. The Control Stations are greater than 10 miles from the site and are in the direction of the least prevailing winds (Stations

1. 23 and #37). The Sensitive In dicator Stations are in the direc tions that the wind blows most often and are one mile from the power plants on Farm-to-Market Road 521 (Stations #1, #15 and

1. 16). The Indicator Stations are the remainder of the stations ex cluding stations 38, 40 and 42.

The values plotted are the aver ages for all of the stations accord ing to type. Figure 6-5 indicates changing conditions in the area of the individual stations. The aver-W SnUTH TEXAS PRDJCT ELECTRIC SENERA.EINc STATIN Environmental Dosimeter Comparisons 22 6

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Results by Quarter Historical Comparison of Average Quarterly Beta Activity from Indicator and Control Air Samples 1988 - 2001 0035 I

[8s2 989 1990 I' l 992 1993 I

9' 4 I'l 5 1996 097 199S 1999 2. 00 2Il 1

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S' Figure 6-6 age of the Control Stations is higher than the other stations be cause station #23 is in an area that has a slightly higher natural back ground radiation, probably due to the soil composition. The trends of Figure 6-5 clearly show that the power plants are not adding to the direct radiation rnthe environment.

Bottom sediment samples are taken from the Main Cooling Res ervoir each year. Figure 6-6 shows the positive results from two plant-produced radioactive materials, Cobalt-58 and Cobalt

60. The Cobalt-58 and Cobalt 60 inventory in the reservoir has decreased since 1992 because of equipment installed to reduce ra dioactive effluents. The amount of Cobalt-58 has decreased be low levels that can be reliably de tected. The concentration of Co balt-60 in the reservoir bottom sediment samples varies but is within the expected range. Fig ure 6-7 demonstrates the decline in the total amount of Cobalt-60 in the reservoir.

Cesium-137 was also mea-sured in one of two Main Cooling Reservoir bottom sediment samples and in two of three indi cator shoreline sediment samples on the Colorado River. However, Cesium-137 was present in the environment before the operation of the South Texas Project and the sample concentrations were ap proximately equal to pre-opera tional values. No other isotopes released from the plant were iden tified in the shoreline samples, which indicates that the plant was Historical Comparison of Cobalt58 & Cobalt-60 in Main Cooling Reservoir Sediment 1986 - 2001 1400 t:* c H

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.,l rc~~ly~lCml Figure 6-7 SOUTH TEXAS PROJECT ELECTRIC GENERATIN STATION probably not the source of Ce sium-137 in these samples. The Cesium-137 measured in the Main Cooling Reservoir does not suggest an increase due to plant operation.

A trace of Iodine-131 was measured in the Colorado River both upstream and downstream from the South Texas Project over a two-week period. Since Iodine 131 is a commonly used radio pharmaceutical, the source was likely a municipal sewage treat ment facility upstream from the South Texas Project. The factthat one of the three positive samples was taken above the Bay City dam, fourteen miles upstream of the South Texas Project, strength ens this conclusion.

Tritium is a radioactive iso tope of hydrogen and is produced during plant operation. Tritium produced in the reactors is a part of the water molecule. Wastewa ter is treated to remove impurities before release, but tritium cannot be removed because it is chemi-Calculated Cumulative Curies of Cobalt-60 in the Main Cooling Reservoir

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-I cally part of the water molecule.

Some ofthe tritium is released into the atmosphere and the remain der is released into the Main Cool ing Reservoir. The tritiunm escapes from the Main Cooling Reservoir by evaporation and by percola tion from the reliefwells that are a part of the dike's stabilization sys tem. Figure 6-8 shows the amount of tritium released to the Main Cooling Reservoir each year and the amount present dur ing the last quarter of each year.

This indicates that almost half of the tritium is removed from the reservoir annually. The majority of the tritium escapes from the reservoir by evaporation because the flow from the relief wells is in sufficient to account for the titium removed. Rainwater was col lected during 1992, 1993, 1994, 2000 and 2001 to determine if the tritium remained in the local area.

Tritium was not found in any rain water samples.

The concentration oftritum in the Main Cooling Reservoir changed very little in 2001 as ex pected. Tritium enters the sloughs and ditches of the site as runoff from the relief wells that surround the reservoir. The tritium concen tration in eight surface water sample points for 1988 through 2001 is shown in Figure 6-9. The specific sample point locations can be found in Table 2. Tritium levels in the onsite sloughs and ditches have increased and are expected to continue increasing until they are near equilibrium with reservoir lev els. The tritium concentration has increased in the sloughs and ditches through 2001 because it takes several years for water to move from the reservoir to the reliefwells.

Tritium was identified in a shallow (ten to thirty feet deep) aquifer test well approximately seventy-five yards south of the reservoir dike base during 1999.

In 2001, the concentration con tinued to increase in this well and reached about 1/3 the concentra tion oftithml in the reservoir. The Figure 6-8 concentration should continue to rise if it follows the trends ob served in other relief wells.

The drinking water onsite is pumped from deep aquifer wells and is tested quarterly to verify tritium is not present. The waters in the reservoir and other surface bodies of water onsite are not used as drinking water. The only way tritium could be introduced into humans is by eating fish from the reservoir, which is not permit ted. If a person ate forty pounds of fish a year from water that con tained the United States Nuclear Regulatory Commission reporting level (30,000 picoCuries per ki logram), that personwould receive less than one millirem. This is in significant compared to the almost twenty millirem a year everyone receives from naturally occurring radioactive potassium in the body.

The current reservoir concentra tion is less than 1/3 the reporting level.

Some samples are collected and analyzed in addition to those required by our licensing docu ments or internal procedures.

These samples are obtained to give additional assurance that the public and the environment are protected from any adverse ef fects from the plant. These samples include wildlife, pasture grass, rain water, water samples from various ditches and sloughs onsite, and air samples near com munities or other areas of inter est. The results of these analyses indicate that there is no detectable radiological effect on the environ ment by plant operation.

0ýSOUTH TEXAS PROJECT ELECTRIC GENERATING STATION A

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Historical Comparison of Tritium Activity in Surface Water 1988-2001 30,ooo pk ne pe! Kio,

. Nidlei, R~g*l.tey C~mi*oai *rC*ng TA*e A

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• River Sample Dovosream of plant (O ffite) #QOI

• West Branch of ver (onsite) #213 iUffle Robbins Slough (Onsite) #212

• East Branch ofLittle robbins Slougrh Cosite) #211 Ditch NE ofMain Cooling Reservoir (Onsite) #229 SMain Cooling Reservoir Blowdown (Onsite) #237

• Mat Cooling Reseiwoir (Onsioe) #216

,"n USE CENSUS nualLand Use Cen sus is perormed to determine if any changes have occurred in the location of residents and the use of the land within five miles of the South Texas Project generating units. The nffornation is used to determine Figure 6-9 whether any changes are needed in the Radiological Environmental Monitoring Program. The census is performed by contacting area residents and local government agencies that provide the informa tion. The results of the survey in dicated that no changes were re quired.

In addition, a survey is performed to verify the nearest residents within five miles ofthe South Texas Project generating units in each of 16 sectors. The nine sectors that have residents within five miles and the distance to the nearest residence in each sector are listed below.

SOUTH TEXAS PROJECT ELECTRIC GrNERATIG STAT.IO Sector Distance Location (approx. miles)

ESE 3.5 Selkirk Island "SE 3.5 Selkirk Island SW 4.5 Citrus Grove WSW 2.5 FM 521 W

4.5 FM 1095*

WNW 4.0 A~hby-Bnckeyo Road NW 4.5 Mondrik Road NNW 3.5 Runnells Ranch (FM 468)

N 3.5 Runnells Ranch( FM 1468)

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.3 The following items of inter est were noted during the census V A l10-acre wetland prairie project continues to provide a habitat for migratory birds and waterfowl. The habitat is located northeast of the power plants and is easily ac cessible to the public.

V Colorado River water from below the Bay City Dam has not been used to irrigate crops.

V No commercial dairy oper ates in Matagorda County and there is no agiiculturil milk sounce within the five-mile zone.

V There were no identified commecial vegetable fmns lo catedwithin the five-mile zone.

V A commercial fish farm con tinues to operate 2 miles west a

Qe plant near FM 521 SSURANCE a ity assurance encom passes planned and systematic actions to ensure that an item or facility will perform satisfactorily.

Quality assurance for the Radio logical Laboratory is measured and assessed by four distinct methods.

Quality V Periodic surveillances ofspecific acvities oign theyear V Comprehensive audits are performed.

Laboratory Quality Assurance Program.

"V Routine instrument control checks, including calibrations and calibration verification, were conducted.

"V Analysts' abilities are tested annually.

"V Intra-laboratory quality control analysesofsanplesareprtbrimed "V Quality control activities are self-assessed.

Inter-laboratory Measurement Assurance Programs are con ducted to ensure consistency with the rest of the industry.

"V The South Texas Project par ticipates in the Nuclear En ergyInstitute/NationalInstitute of Standards and Technology Measurement Assurance Pro gran for the Nuclear Industry.

"V We also participate in the Battelle Pacific Northwest Laboratories' Measurement Assurance Program.

Figure 6-10 V The South Texas Project participates in an inter-util ity measurement assurance program.

V Environmental media blind samples are measured.

The South Texas Project is pe riodically reviewed by outside organizations or agencies, in cluding the United States Nuclear Regulatory Commis sion, American Nuclear Insur ers, etc.

V The programmatic content and effectiveness of the Ra diological Environmental Monitoring Program is re viewed to assure license com pliance and to gauge the de gree of compliance with se lect operational guidelines.

Reviews, suveillan* and audits have determined that the programs, procedures and personnel are ad equate and perform satisfactorily.

Quality audits and indepen dent technical reviews help to de termine areas that need attention and re-evaluation. Areas that need attention are addressed in accor dance with the station's Correc five Action Program.

The measurement capabilities of the Radiological Laboratory are demonstrated by participating in inter-laboratory measurement as surance programs. These pro grams provide samples that are similar in matrix and size to those measured for the Radiological EnvirowmetalMonitaingProgram Figure 6-10 summarizes the results of these inter-comparison programs. Analyses consisted of i SOUTH TEXAS PROJECT ELECTRIC GENERATINS STATION 2001 Radiological Laboratory Quality Assurance Program Performance 1.1.%

Difference 78 Total Analyses J

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2001 Environmentaf Reyort radiochemical measurements and measurement of direct radiation through the use ofthermolumines cent dosimeters. In addition, ap proximately twenty percent of the analyses made are quality control samples that consist of duplicate, split and blind samples.

Radiochemical measure ments must meet sensitivity re-quirements at the lower level of detection for environmental samples. These stringent re quirements were met in all samples taken in 2001 except as described in the following para graj 4M DEVIATIONS Dvi*ations from the sam pling program must be ac-knowledged and explained in this report. During 2001, the following samples were not collected or were unaccept able for analysis:

V Seven out of 260 weekly air samples did not meet the minimum detection require ments because equipment failure prevented the col lection of sufficient sample.

V Five out of thirty-six re quired broadleaf vegetation samples were not collected due to seasonal unavailabil ity (January and February).

The minimum Radiological Environmental Monitoring Pro gram is presented in Table 1. The table is organized by exposure pathway. Specific requirements like location, sampling method, collection frequency, and analyses are given for each pathway. y iii

7i2> 7

-

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

Radofoglicaf Environ*entaf Oyerating Reyort The minimum Radiological Environmental Monitoring Program is presented in Table 1. The table is organized by exposure pathway. Specific requirements like location, sampling method, collection frequency and analyses are given for each pathway.

Table 1 Radiological Environmental Monitoring Program EXPOSURE: DIRECT RADIATION 40 TOTAL SAMPLING STATIONS Sample Media, Number, Approximate Location and Distance of Routine Sampling Sampling and Analysis Minimum Sample Stations from Containment.

Mode Collection Type Analysis

[ Frequency Frequency Exposure Media: TLD 16-Located in all 16 meteorological sectors, 0.2* to 4 miles.

Continuously Quarterly Gamma dose Quarterly 16-Located in all 16 meteorological sectors, 2 to 7 miles.

6 Located in special interest areas (e.g. school, population centers), within 14 miles.

2-Control stations located in areas of minimal wind direction (WSWENE), 10-16 miles.

The inner ring of stations in the southern sectors are located within 1 mile because of the main cooling reservoir EXPOSURE: AIRBORNE 5 TOTAL SAMPLING STATIONS Sample Media, Number, Approximate Location, and Distance of Routine Sampling Nominal Analysis Minimum Sample Stations from Containment.

Mode Collection Type Analysis Frequency Frequency Charcoal and Particulate Filters 3 Located at the exclusion zone, N, NNW, NW Sectors, 1 mile.

Continuous Weekly or Radioiodine Weekly sampler more Canister.

1-Located in Bay City, 14 miles.

operations frequently if 1-131 1-Control Station, located in a minimal wind direction (WSW),

required by Particulate 10 miles.

dust loading Sampler:

Gross Beta Following Activity filter change Gamma-Quarterly Isotopic of composite (by location)

EXPOSURE: WATERBORNE 9 TOTAL SAMPLING STATIONS Sample Media, Number And Approximate Location of Sample Routine Sampling Nominal Analysis Minimum Stations Mode Collection Type Analysis Frequency Frequency Surface 1_- Located in MCR at the MCR blowdown structure.

Composite sample Monthly Gamma-Monthly Over a 1 month Isotopic 1-Located above the site on the Colorado River not influenced period (grab if by plant discharge (control),

not available)

Tritium Quarterly 1-Located downstream from blow down entrance into the Composite Colorado River.

Ground 1-Located at well down gradient in the shallow aquifer.

Grab Quarterly Gamma-Quarterly Isotopic &

Tritium SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

2001 Environmentaf Report Table 1 Radiological Environmental Monitoring Program EXPOSURE: WATERBORNE (CONTINUED)

Sample Media, Number And Approximate Location of Sample Routine Sampling Nominal Analysis Minimum Stations Mode Collection Type Analysis Frequency Frequency Drinking Water 1-Located on site.

Grab Monthly Gross Beta Monthly

& Gamma 1-Located at a control station.

Isotopic Tritium Quarterly Sediment Composites 1-Located above the site on the Colorado River, not influenced Grab Semi-annually Gamma-Semi-annually by plant discharge.

Isotopic 1_- Located downstream from blowdown entrance into the Colorado River.

1-Located in MCR.

No municipal water systems are affected by STP. This sample taken from deep aquifer supplying drinking water to employees while at work.

EXPOSURE: INGESTION 7 TOTAL SAMPLING STATIONS Sample Media, Number And Approximate Location of Sample Routine Sampling Nominal Analysis Minimum Stations Mode Collection Type Analysis L

Frequency Frequency Milk Grab Semi-monthly Gamma-Semi-monthly when animals Isotopic when animals are on and 1-131 are on pasture; pasture; monthly at monthly at Broadleaf Vegetation*

other times.

other times.

2-Located at the exclusion zone, N, NW, or NNW sectors.

Grab Gamma 1-Located in a minimal wind direction.

Monthly during Isotopic As collect growing season and 1-131 (When available)

Limited source of sample in vicinity of the South Texas Project- (Attempts will be made to obtain samples when available.)

Three different kinds of broadleaf vegetation are to be collected over the growing season, not each collection period EXPOSURE: INGESTION (continued)

Sample Media, Number And Approximate Location of Sample Routine Sampling Nominal Analysis Minimum Stations Mode Collection Type Analysis Frequency Frequency Fish and Invertebrates (edible portions) 1-Representing commercially or recreational important species Grab Sample semi-Gamma-As collected in vicinity of STP that maybe influenced by plant operation-annually Isotopic on edible I-Same or analogous species in area not influenced by STP.

portions 1-Same or analogous species in the MCR.

Agricultural Products Grab At time of Gamma-As collected harvest Isotopic Analysis in Domestic Meat edible portion 1-Represents domestic stock fed on crops grown exclusively Grab Gamma-As collected within 10 miles of the plant.

Annually Isotopic No sample stations have been identified in the vicinity of the site. Presently no agricultural land is irrigated by water into which liquid plant wastes will be discharged. Agricultural products will be considered if these conditions change.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

Radiofogicaf Environmentaf Oyerating Ryort Table 2 Sample Media and Location Descriptions AIRBORNE RADIOIODINE CABBAGE AIRBORNE PARTICULATE RESIDENT DABBLER DUCK RESIDENT DIVER DUCK MIGRATORY DABBLER DUCK MIGRATORY DIVER DUCK GOOSE DOVE QUAIL PIGEON CRUSTACEAN CRAB COLLARD GREENS BEEF MEAT POULTRY MEAT WILD SWINE DOMESTIC SWINE EGGS GAME DEER ALLIGATOR RABBIT OYSTER CRUSTACEAN SHRIMP DIRECT RADIATION FISH - PISCIVOROUS FISH - CRUSTACEAN & INSECT FEEDERS FISH - PLANTIVORES & DETRITUS FEEDERS BANANA LEAVES CANA LEAVES TURNIP GREENS SEDIMENT - SHORELINE SEDIMENT - BOTTOM PASTURE GRASS DRINKING WATER GROUND WATER SURFACE WATER RELIEF WELL WATER SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION SOIL

2001 Environmentaf Reyort Table 2 Sample Media and Location Descriptions MEDIA CODE STATION VECTOR LOCATION DESCRIPTION CODE (Approximate)

DRAI AP VB VP SO 001 1 mile N FM 521 DR 002 1 mile NNE FM 521 DR 003 1 mile NE FM 521 DR 004 1 mile ENE FM 521 DR 005 1 mile E STP Visitor Center on FM 521 DR AI AP SO 006 3.5 miles ESE Site near Reservoir Makeup Pumping Facility DR 007 3.5 miles SE MCR Dike DR 008 0.25 mile SSE MCR Dike DR 009 0.25 mile S MCR Dike DR 010 0.25 mile SSW MCR Dike DR 011 0.5 mile SW MCR Dike DR 012 1.5 mile WSW MCR Dike DR 013 1.5 mile W FM 521 DR 014 1.5 mile WNW FM 521 DRAI AP VB SO VP 015 1 mile NW FM 521 DRAI AP VB SO VP 016 1 mile NNW FM 521 DR 017 6.5 miles N Buckeye - FM 1468 DR AI AP SO 018 5.5 miles NNE Celanese Plant - FM 3057 DR 019 5.5 miles NE FM 2668 DR 020 5 miles ENE FM 2668 & FM 2078 DR 021 5 miles E FM 521& FM 2668 DR 022 7 miles E Equistar Chemical Plant DR 023

• 16 miles ENE Intersection of FM 521 and FM 2540 MCR-STP Main Cooling Reservoir STP-South Texas Project Media codes typed in bold satisfy collection requirements described in Table I.

Control Station SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

1 1 Radrofo jicaf Environmentaf Oyerating Reyort Table 2 Sample Media and Location Descriptions MEDIA CODE STATION VECTOR LOCATION DESCRIPTION CODE (Approximate)

DR 024 4 miles SSE MCR Dike DR 025 4 miles S MCR Dike DR 026 4 miles SSW MCR Dike DR 027 2.5 miles SW MCR Dike DR 028 5 miles WSW FM 1095 & Ellis Road DR SO 029 4.5 miles W FM 1095 DR 030 6 miles WNW Tres Palacios Oaks, FM 2853 DR 031 5.5 miles NW Wilson Creek Road DR 032 3.5 miles NNW FM 1468 DR Al AP SO 033 14 miles NNE Microwave Tower at end of Kilowatt Road in Bay City DR 034 7.5 miles ENE Wadsworth Water Supply Pump Station DR AI AP SO 035 8.5 miles SSE Matagorda DR 036 9 miles WSW College Port DR Al AP VB VP SO 037*

10 miles WSW Palacios CP&L Substation DR 038 10.5 miles NW CP&L Substation on TX 71 near Blessing TX 35 under High Voltage Power lines near DR Al AP 50 039 9 miles NW TieanHihSol Tidlehaven High School DR 040 4.5 miles SW Citrus Grove DR 041 2.0 miles ESE MCR Dike DR 042 8.5 miles NW FM 459 at Tidehaven Intermediate School DR 043 4.5 miles SE Site boundary at blowdown outlet WS 209 2 miles ESE Kelly Lake WD 210 On Site Approved drinking water supply from STP WS 51 211 3.5 miles S Site, E. Branch Little Robbins Slough MCR-STP Main Cooling Reservoir STP-South Texas Project Media codes typed in bold satisfy collection requirements described in Table 1.

• Control Station SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION

2001 Environmentaf Reyort Table 2 Sample Media and Location Descriptions MEDIA CODE STATION VECTOR LOCATION DESCRIPTION CODE (Approximate)

WS S1 212 4 miles S Little Robbins Slough WS 51 213 4 miles SE West Branch Colorado River F (1,2, or 3) CC 214 2.5 miles SE MCR at Makeup Water Discharge S2 215 0.5 mile SW MCR at Circulating Water Discharge WS S2 216 3.5 miles SSE MCR at blowdown structure F (1, 2, or 3) CC CS 222

>10 miles West Matagorda Bay OY WS S(11 or 2) 227 5-6 miles SE West bank of Colorado River downstream of STP across from channel marker #22 WD 228*

14 miles NNE Le Tulle Park public water supply Drainage ditch north of the reservoir that empties WS 51 229 2-3 miles ESE into Colorado River upstream of the reservoir makeup pumping facility Colorado River at point where drainage ditch S(1 or 2) 230 3.5 miles ESE (29 mte noi

(#229) empties into it Colorado River where MCR blowdown discharge S(1 or 2) WS 233 4.5 miles SE canlepisit t

channel empties into it.

WG 235 3.8 miles S Well B-3 directly south from MCR B8 236 N/A STP Protected Area WS 237 3.7 miles SSE Blowdown discharge channel from MCR S(1 or 2) WS 242*

>10 miles N Colorado River where it intersects Highway 35 Colorado River upstream of Bay City Dam at the Lower Colorado River Authority pumping station WS 247

<1 mile E Essential Cooling Pond F(1,2, or 3) 249*

N/A Control sample purchased from a local retailer so 250 0.75 miles NW Sewage sludge land farming area F(1,2,or 3) CC S2 300 S

STP Main Cooling Reservoir WW 701 4 miles S MCR Relief Well # 440 Quarterly composite of station #227 and/or WS Q01 N/A altermate #233 WS Q02 N/A Quarterly composite of station #243 and/or WI I

NA altermate #242 MCR-STP Main Cooling Reservoir STP-South Texas Project Media codes typed in bold satisfy collection requirements described in Table I.

• Control Station SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

Radaofogicaf Environmentaf Oyerating Reyort T :2001 Radiological

<tt nmental Monitoring Program Analysis An analysis summary for all of the required samples is given in Table 3. The table has been for matted to resemble a United States Nuclear Regulatory Com mission industry standard. Modi fications have been made for the sole purpose of reading ease.

Only positive values are given in this table.

Media type is printed at the top left of each page, and the units of measurement are printed at the top right. The first column lists the type of radioactivity or specific radionuclide for which each sample was analyzed. The second column gives the total number of analyses performed and the total number of non-routine analyses for each indicated nuclide. (A non routine measurement is a sample whose measured activity is greater than the reporting levels for Ra dioactivity Concentrations in En-vironmental Samples.) The "LOWERLIMITOFDEFECHON' column lists the measurement sensitivities achieved which were more sensitive than specified bythe Nuclear Regulatory Commis sion.

A set of statistical parameters is listed for each radionuclide in the remaining columns. The pa rameters contain information from the indicator locations, the location having the highest annual mean, and information from the control stations. Some sample types do not have control stations. When this is the case, "no samples" is listed in the control location col umn. For each of these groups of data, the following is calculated:

77 The mean value of positive real values.

V The number of positive real measurements / the total num ber of analyses.

V The lowest and highest values for the analysis.

The data placed in the table are from the samples listed in Table 1. Additional thermolumi nescent dosimeters were utilized each quarter for quality purposes.

The minimum number of other analyses required by Table 1 were supplemented in 2001 by eleven surface water samples, two ground water samples, two drinking wa ter samples, four rainwater samples, one shoreline sediment sample, and three bottom sedi ment samples. Fish, vegetation, and wildlife samples vary in num ber according to availability but also exceeded the minimum num ber required by Table 1.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

2001 Environmentaf Report TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Direct Radiation Units: milliRoentgen/Standard Quarter ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (f0 LOCATION MEAN (f)*

MEAN (0)'

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Gamma 174/0 1.5E+01 ( 166 166) 1 mile W l.9E+-01 (5 /5) 1.5E-01 ( 8,

8)

( 1.1E 2.0E-01 )

(#013)

(1.7E 01 -2.OE+01)

( 1.3E 1.8E+01)

(f) Number of positis e measurements /total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Air Iodine Units: picoCuries per Cubic Meter ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (i*

LOCATION MEAN (f0*

MEAN (fl*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Iodine-131 254/0 8.9E-03

--- ( 0V 202)

( 0,

52)

(I) Number of positiVe measurements/ total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Airborne Particulate Units: picoCuries per Cubic Meter ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANINLUAL MEAN CONTROL LOCATIONS TYPE

,NONROUTINE LOWER LIMIT MEAN (f)*

LOCATION MIEAN (f)*

MEAN (0 MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Gross Beta 254A0 1.5E-03 2.4E-02(201, 202) 1 mile N 2.5E-02 ( 46/ 46) 2.4E-02 52, 52)

(IE 6.4E-02)

(#001)

( 1.3E 6.4E-02)

( I.E 6.5E-02)

Cesium-134 20A0 2.SE-04

--- ( 0' 16)

--- ( 0,

4)

Cesium-137 20/0 2,5E-04

--- ( 0i 16) 0

4)

Mlanganese-54 20/0 3.IE-04

--- ( 0/ 16)

--- ( 0, 4)

Iron-59 20/0 1.7E-04

--- ( 0

16)

--- ( 0

4)

Cobalt-58 20'0 4.5E-04

--- ( 0, 16)

--- ( 0

4)

Cobalt-60 20,0 3.OE-04

--- ( 0

16)

--- ( 0

4)

Zinc-65 20/0 6.7E-04

--- (0,

16)

--- ( 0

4)

Zirconium-95 20/0 8.3E-04

--- ( 0i 16)

---

( 0

4)

Niobium-95 20/0 8.2E-04

--- ( 0

16)

--- ( 0

4)

Lanthanum-140 20/0 5.3E-03

--- ( 0

16)

--- ( 0

4)

Barium-140

• (f) Number of positive measurements total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION

I I Radofogicaf Environmentaf Oyerating Reyort ANALYSIS TOTAL ANALYSES INDICATOR EOC,\\TIONS LOCATION WITHI IIIGHESTANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER IAMIT MI'AN (N)W LOCATION MEAN (f)N MiAN In MNILASURENMENTS OF I)ETECTION RANGE INFORMATION RANGE RANGE Hydrogen-3 12 0 2.6E+02 9.1EE+03(

4 S) 3milesSSE 9.1E03(

4

4)

--- (

0

4)

(_8.2E 9.6E+03)

(#216) 8.2E 9.6+03)

Iodine-131 47 0 8.4E+00 2.3E--00(

2 30) 6 miles SE 2.7E+00 ( 1

9) 4E-00 ( 1 17) 47E0

-1 2.00 27E-00)

(-227)

(2.7E 2.7E-00)

I.4E 1.E+00)

Cesiurn134 40 2.OE-00

--- 1 0

30) 0 17 Cesium-137 47, 0 1.9E-00 0

30) 0

17)

Manganese-54 47 0 I.SE+00 0

30) 0

17)

Iron-59 47,0 5.7E+00 0

30) 0--

17)

Coball-58 47,0 2.0E-00 0

30)

(

0 171 Cobali-60 47 0 1.9E-00 0

30) 0

17)

Zinc-65 47,0 3.9E-00

--- 0

30) 0

17)

Zirconium-95 47'0 3.5E+00 0

30) 0

17)

Niobium-95 47,0 2.4E-00 0

30) 0

17)

Lanthanum-140 47,0 3.5E-00 0

30) 0

17)

Barium-140 (f) Number of positiN e measurelments total measurements at specified locations.

p co ur esu per aiguIui[

ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS ILOCATION WTI H ttIGHEST ANNUAL ME AN CONTROL LOCATIONS TYPE O

NONROUTINE LOW ER LINIIT MEAN (1t)

LOCATION MEAN (f)*

%,lEAN (f*

MEASURELILENTS OF DETECTION RANGE INFORMATION RANGE RANGE Hydrogen-3 4 0 2.6E-02 0

4) no samples Iodine-131 4 0 8.4E+00 0

4) no samples Cesiu-m--134 4 0 2.OE-00 0

4) no samples Cesium-137 4 0 1.9E-00 0

4) no samples lang'inese-4 4 0 80 00 0 0

)------

no samples Iron-59 4 0 5.7E-00 0

4) no samples Cobalt 58 4 0 200--

4----

no samples Cnbnels-6 4 0 18E-00 0

4) no samples ZInc-65 4 0 3.9E-00 0

4) nosamples Zirconm9 4, 0 3.5E-00)---

no samples Niobiuma9-4 0 2.4E+00

--- ( 0

4) no samples LCnlbanum-140 4 0 3.5E-00 0

4) no samples Barium-140 (1),*umiiiier OH positive measuremenlts, total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Surface Water U nits: nicfCuriesn or kni1,-cr r TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Rain Water I Ii ;,(.

I

2001 Environmentaf Reyort ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (f)"

LOCATION MEAN (f)*

MEAN (f)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Hydrogen-3 6/0 2.6E+02 1.9E+03 ( 6/

6) 3.8 miles S I.9E+03 ( 6 /

6) no samples 1.2E+'03 - 3.6E+03)

(#235)

( 1.2E+03 - 3.6E+03 )

Iodine-131 6/0 8.4E+00

--- ( 0/

6) no samples Cesium-134 6/0 2.0E+00

--- ( 0

6) no samples Cesium-137 6!"0 1.9E+00

--- ( 0

6) no samples Manganese-54 6/0 1.8E+00

--- ( 0

6) no samples Iron-59 6/0 5.7E+00 f0

/

6) no samples Cobalt-58 6/0 2.OE+00

--- ( 0

6) no samples Cobalt-60 6/0 1.9E+00

--- ( 0

6) no samples Zinc-65 6/0 3.9E+00

--- ( 0

6) no samples Zirconium-95 6/0 3.5E+00

--- ( 0

6) no samples Niobium-95 6/0 2.4E+00

--- ( 0/

6) no samples Lanthanum-140 6/0 3.5E+00

--- ( 0/

6) no samples Barium-140

• (f) Number of positive measurements total measurements at specified locations.

ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE INONROUTINE LOWER LIMIT MEAN (f)'

LOCATION MEAN (f)*

MEAN (f)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Gross Beta 26/0 1.2E+00 3.1E+00 ( 7/ 14) 14 miles NTNE 3.5E+00 ( 11 / 12) 3.5E+00 ( 11 / 12)

(_1.9E+00 - 4.2E+00)

(#228)

(2.4E+00 - 4.8E+00 (2.4E+00 - 4.8E+00)

H y d r o g e n -3 8 /0 2.6 E +0 2

--- ( 0 ' 4 )

( 0 / 4 )

Iodine-131 26/0 5.4E-+00

--- ( 0/ 14)

-- ( 0/ 12)

Cesium-134 26/0 2.OE+00

--- ( 0/

14)

--- ( 0/

12)

Cesium-137 26/0 1.9E+00

--- ( 0/ 14)

( 0- 12)

Manganese-54 26/0 1.8E+00

--- ( 0/

14) 0/

12)

Iron-59 26/0 5.7E+00

--- ( 0 / 14)

( 0 / 12)

Cobalt-58 26/0 2.OE+00

--- ( 0/

14)

( 0/ 12)

Cobalt-60 26/0 1.9E+00

--- ( 0/ 14)

--( 0

12)

Zinc-65 26/0 3.9E+00

--- ( 0/

14)

-- ( 0/ 12)

Zirconium-95 26/0 3.5E+00

--- ( 0

14)

( 0/

12)

Niobium-95 26/0 2.4E+00

--- ( 0

14)

--- ( 0/ 12)

Lanthanum-140 26/0 3.5E-00

( 0

14)

( 0/

12)

Baninm140 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

1iA~a,-,,.,. *.*,.

\\X/*s*

llni-t' nir-oCuirie* ner Kilogr~am TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Drinking Water Units: picoCuries per Kilogram

ýt) unt er o pos, ve measuremen s to a measuremen s a spec e oca ons.

t aj Raaqofogicaf Environmentaf Oyerating Reyort

• () Number of positie measurements," total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Sediment-Shoreline I busnitmrifnluijej nor Wiln-oram Hex wx ioht ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MIEAN (f*

LOCATION

\\IEAN (fV MEAN (t)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 510 2.5E+01 0( 3)

( 0, 2)

Cesium-137 50 2.OE+01 3.5E-0I ( 2 3) 6 miles SE 3.5E-01 ( 2 3) 2.8E+01 ( 2, 2)

(3.2E-01 -3.SE-01 )

_(227) 3.2E 3.E+01) I 2.2E 3.4E+0I)

Manganese-54 5

1.5E-01 0

3 )

( 0,

2)

Iron-59 5,0

8. IE-01 0

3) 0

2)

Cobalt-58 5,'0 2.3E-01 0

3) 0

2)

Cobalt-60 5'0 1.3E-01 0

3

--- ( 0

2)

Zinc-65 5/0 4.9E-01

--- ( 0

3)

-- 0, 2)

Zirconium-95 5,'0 5.OE-01 0

3)

V0, 21 Niobium-95 5/0 4.6E-01 0

3)

( 0

2)

Lanthanum-140 5,0 1.9E-02 0 3) 0

2)

Barium-140

• (f) Number of positive measurements total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Sediment-Bottom

[Units: nicoCuries noer Kiiogram dry weioht ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION Wk`ITH HIGHEST ANNUAL \\IEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (fn*

LOCATION MEAN (0*

MEAN (f)*

\\MEASURENIENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 5;0 2.5E+01

--- ( 0"5 no samples Cesium-137 5,0 2.OF-01 1.1E-02 ( 1 5) 3 miles SSE 1.1 E-02 ( 1, 2) no samples

1. 1 E+02 - 1.1E 02)

(;216)

( 1.)E 1.1E-02 Manganese-54 5/0 1.5E-01 0, 5 )

no samples Iron-59 5,'0 8.IE-01

--- ( 0,

5) no samples Cobalt-58 5A0 2.3E-01 0,

5) no samples Cobalt-60 5 0 1.3E-01 4.2E+01 ( 2), 5) 3 miles SSE 4.2E+01 (2

2) no samples S1.5E+01 - 6.9E-01 )

(1216)

(1.5 E+ 1-6.9E-01 )

Zinc-65 5,'0 4.9E-01 0

5 )---...

no samples Zirconium-95 5/0 5.OE+01 0, 5) no samples Niobium-95 5/0 4.6E+01

--- ( 0,

5) no samples Lanthanum-140 5/0 1.9E+02 0

5) no samples Barium-140

2001 Environmentaf Reyort TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Banana Leaves Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE

/NONROUTINE LOWER LIMIT MEAN (0)*

LOCATION MEAN (0)*

MEAN (1*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Iodine-131 20/0 7.7E+00

--- ( 0/

13)

( 0/

7)

Cesium-134 20/0 2.OE+00

--- ( 0/

13)

( 0V 7)

Cesium-137 20/0 1.7E 00

--- ( 0/

13)

-- ( 0/

7)

Manganese-54 20/0

.9E+00

( 0! 13)

( 0

7)

Iron-59 20/0 8.0E 00

--- ( 0/

13)

--- 0/

7)

Cobalt-58 20/0 2.OE+00

--- ( 0/

13)

--( 0/

7)

Cobalt-60 20/0 2.2E+00

--- ( 0/

13)

( 0/

7)

Zinc-65 20/0 5.5E-00

--- ( 0/

13)

- ( 0/

7)

Zirconium-95 20/0 3.5E-00

--- ( 0/

13)

( 0/

7)

Niobium-95 20/0 2.4E+00

--- ( 0/ 13)

-( 0/

7)

Lanthanum-140 20/0 3.6E+00

--- (0/

13)

--- (

0/

7)

Barium-140 (0) Number of positive measurements 'total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Cana Leaves Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE

/NONROUTINE LOWER LIMIT MEAN (f)*

LOCATION MEAN (f0*

MEAN (fn*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Iodine-131 10/0 7.7E+00 0/

7)

-- (

01

3)

Cesium-134 10/ 0 2.OE+00

--- ( 0/

7)

( 0/

3)

Cesium-137 10/0 1.7E+00

--- ( 0/

7)

( 0i 3)

Manganese-54 10/0 1.9E+00

--- ( 0/

7)

-- ( 0'

3)

Iron-59 10/0 8.0E1+00

--- ( 0/

7)

--- 0/

3)

Cobalt-58 10/0 2.OE+00

--- ( 0/

7)

( 0/

3)

Cobalt-60 10/0 2.2E+00

--- ( 0/

7)

-- ( 0/

3)

Zinc-65 10/0 5.5E+00

--- ( 0/

7) 0/

3)

Zirconium-95 10/0 3.5E+00

--- ( 0/

7)

( 0/

3)

Niobium-95 10/0 2.4E+00

--- ( 0/

7)

( 0i 3)

Lanthanum-140 10/0 3.6E+00

--- ( 0/

7)

( 0/

3)

Barium-140

-1 1

• (f) Number of positive measurements / total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION

I I Radiofogicaf Environmentaf Oyerating Ryort SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Collard Greens Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNU AL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT M'EAN (f*

LOCATION MEAN (f'V MEAN (f)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Iodine-1311 0

4.6E+00

0.

1) no samples Cesium-134 L; 0 8.2E-01 0"

1 )

no samples Cesium-137 1,0 6.21-01 0

1 )

no samples Manganese-54 1 0 7.6E-01 0" 1 )

no samples Iron-59 1/0 3.8E+00 0,

1 )

no samples Cobalt-58 1.0 8.6E-01

--- ( 0

1) no samples Cobalt-60 L'0 9.3E-01 0

1) no samples Zinc-65 1 0 2.5E-00 0

1 )

no samples Zirconium-95 11 0 1.5E-00 0

1 )---...

no samples Niobium-95 F 0 1.IE-00 0

I )

no samples Lanthanum-140 1' 0 1.6E-00 0

I )

no samples Barium-140

• (f) Number of positiv e measurements total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Fish - Piscivorous Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (t)*

LOCATION MEAN (1"*

\\IEAN (f)

MEASUREMENTS OF DETECTION RANGE INFORMIATION RANGE RANGE Cesium-134 7T0 2.8E-01 0

)

5.......---

0" 2)

Cesium-137 7T0 1.7E-01 0

5) 0

2)

Manganese-54 720 2.6E-01 0

51

( 0,

2)

Iron-59 7'0 8.4E-01 0

5)

--- ( 0,, 2)

Cobalt-58 7/0 3.0E-01 0

5) 0, 2)

Cobalt-60

'0 2.7E-01 0"

( 0 ' 2)

Zinc-65 7T0 5.7E-01 0

5) 1--

( 0

2)

Zirconium-95 70 5.5E+01 0

5)

( 0

2)

Niobium-95 70 4.3E+01

--- 0,'

( 0

2)

Lanthanum-140 70 1.3E+02 0V 5) 0

2)

Barium-140

• () Number of positive measurements total measurements at specified locations.

""I'll 3

A-

2001 Environmentaf Reyort ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (t)*

LOCATION MEAN (0*

MEAN (f)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 3/0 2.8E-01

--- ( 01/ 3) no samples Cesium-137 3/0 2.7E+01

--- ( 0/

3) no samples Manganese-54 3/0 2.6E+01

--- ( 0 / 3) no samples Iron-59 3/0 8.4E+-01

--- ( 0/

3 no samples Cobalt-58 3/0 3.0E+0

--- ( 0/

3) no samples Cobalt-60 3Y0 2.7E-01

--- ( 0/ 3) no samples Zinc-65 3 0 5.7E+01

--- ( 0/ 3) nosamples Zirconium-95 3/0 5.5E-01

--- ( 0

3) no samples Niobium-95 3/0 4.3E+01

--- ( 0

3) no samples Lanthanum-140 3/0 1.3E+02

--- ( 0

3) no samples Barium-140

• (f) Number of positive measurements total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Crustacean Shrimp Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE

'NONROUTINE LOWER LIMIT MEAN (0)*

LOCATION MEAN (0*

MEAN (0*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 4/0 2.8E+01

--- ( 0/

3)

( 0/

1)

Cesium-137 4/0 2.7E+01

--- 0/

3

--- ( 0/

I)

Manganese-54 4/0 2.6E+-01

--- ( 0/

3)

--- ( 0/ 1)

Iron-59 4/0 8.4E 0

--- ( 0/

3)

( 0!

1)

Cobalt-58 4/0 3.OE-01

---( 0 3)

--- ( 0

1)

Cobalt-60 4/0 2.7E+01

--- ( 0/ 3)

--( 0/ 1)

Zinc-65 4/0 5.7E+01

--- ( 0/ 3)

-- ( 0/ 1)

Zirconium-95 4/0 5.5E+01

--- ( 0/ 3)

--( 0/ 1)

Niobium-95 4/0 4.3E+0

--- ( 0/

3)

--- ( 0

1)

Lanthanum-140 4/0 1.3E+02

--- ( 0 3) 0 0

1)

Barium-140 (f) Number ot positive measurements/ total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC SENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Fish -Crustacean & Insect Feeder Units: picoCuries per Kilogram wet weight 4r

Radiofogicaf Environmentaf Oyerating Reyort ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH tIIGIHIEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (f)-

LOCATION MEAN (f0 MEAN (1f*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 1110 2.8E-01 no samples 0

1)

Cesium-137 1.0 2.7F-01 no samples

--- (0

1)

Manganese-54 1 0 2.6E+01 no samples

--- ( 0

1)

Iron-59 t 0 8.4E+01 no samples

( 0 I)

Cobalt-58

1. 0 3.OE-01 no samples

( 0" 1)

Cobalt-60 1110 2.7E-01 no samples

( 0 I t Zinc-65 1 0 5.7E-01 nosamples 0V I Zirconium-95 1 0 5.5E-01 no samples

( 0 1,

Niobium-95 1,'0 4.3E+-01 no samples 0" 1 Lanthanum-140 1 0 1.3E+02 no samples

( 0,1 )

Barium-140 (ff Number of positi e measurements,' total measurements at specified locations.

TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Game Deer Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MIEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (0*

LOCATION MEAN (0*

MEAN (f)*

tMEASUREMENTS OF DETECTION RANGE INFORMATION RANGE R-ANGE Cesium-134 2'0 2.8E+01

--- (0,

2) nosamples Cesium-137

2. 0 2.7E+01 0 0

2) no samples Manganese-54 2,' 0 2.6E-01 0.. 21 no samples lron-59 2' 0 8.4E-01

--- ( 0 2 )

no samples Cobalt-58 2' 0 3.0E-01 0 2) no samples Cobalt-60

2. 0 2.7E+01

--- 1 0

2) no samples Zinc-65 2,0 5.7E+01

--- 1 0 2

no samples Zirconium-95 2.'0 5.5E+-01

--- (0

2) no samples Niobium-95 2,0 4.3E-01

--- (0

2) no samples Lanthanum-140 2'0 1.3E-02 0 2 )---...

no samples Barium-140 I

• (1) Number of positive measurements, total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

MM;i~r.0 IMo,-f Mert I nits: nico*Curies nor Kilogram wet wxeioht

2001 Environmentaf Reyort

• (f) Number of positive measurements /total measurements at specified locations.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TABLE 3 2001 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANALYSIS

SUMMARY

Medium: Quail Units: picoCuries per Kilogram wet weight ANALYSIS TOTAL ANALYSES INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MEAN CONTROL LOCATIONS TYPE NONROUTINE LOWER LIMIT MEAN (f3*

LOCATION MEAN (0)*

MEAN (f)*

MEASUREMENTS OF DETECTION RANGE INFORMATION RANGE RANGE Cesium-134 110 2.8E-01

--- ( 0

1) nosamples Cesium-137 1/0 2.7E-01

--- ( 0

1) no samples Manganese-54 1/0 2.6E-01

--- ( 0

1) no samples Iron-59 IP0 8.4E+-0I

--- ( 0 1 )

no samples Cobalt-58 I/0 3.0E+01

--- ( 0! 1) no samples Cobalt-60 1/ 0 2.7E+ 01

--- ( 0

1) no samples Zinc-65 1/0 5.7E+01

--- ( 0 1 )---...

no samples Zirconium-95 1/0 5.5E+01 0

1) no samples Niobium-95 1/0 4.3E+0 I

( 0, 1

no samples Lanthanum-140 11 0 1.3E+02

--- ( 0

1) no samples Barium-140