ML20246Q058

1997 Annual Environ & Annual Radiological Environ Operating Repts, for South Texas Project

ML20246Q058
Person / Time
Site:	South Texas
Issue date:	12/31/1997
From:	Earls L, Sherwood J, Travis P HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9805040434
Download: ML20246Q058 (83)

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Nuc ear Operat ng ompany a

S South Tcuns1%$ctEkcetGenerauyStatkm PQ Bar289 %hnath Tcnas77M3 w.

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April 30,1998 l

NOC-AE-000153 File No.: G02, G07 j

~ 10CFR50.36b STI: 30608759 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project q

Units 1 & 2 Docket Nos. STN 50-498, STN 50-499

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1997 Annual Environmental and Annual

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3 radiological Enviromnental 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 (Nomadiological), and Technical Specification 6.9.1.3, attached are the 1997 Annual Environmental and Annual j

Radiological Environmental Operating Reports.

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if you have any questions, please contact Ms. P.L. Travis at (512) 972-8573 or me at

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(512) 972-7799.

D.R. Lovell

Manager, Generation Support

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Attachment:

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Operating Reports.

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9805040434 971231 PDR ADOCK 05000498 R

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ST-NOC-AE-000153 File No.: G02, G07 Page 2 Ellis W. Merschoff Jon C. Wood Regional Administrator, Region IV Matthews & Branscomb U. S. Nuclear Regulatory Commission One Alamo Center 611 Ryan Plaza Drive, Suite 400 106 S. St. Mary's Street, Suite 700 l

Arlington, TX 76011-8064 San Antonio, TX 78205-3692

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Thomas W. Alexion Institute of Nuclear Power Project Manager, Mail Code 13H3 Operations - Records Center j

U. S. Nuclear Regulatory Commission 700 Galleria Parkway

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Washington, DC 20555-0001 Atlanta, GA 30339-5957 David P. Loveless Richard A. Ratliff Sr. Resident Inspector Bureau of Radiation Control c/o U. S. Nuclear Regulatory Commission Texas Department of Health P. O. Box 910 1100 West 49th Street Bay City, TX 77404-0910 Austin, TX 78756-3189 J. R. Newman, Esquire D. G. Tees /R. L. Balcom Morgan, Lewis & Bockius Houston Lighting & Power Co.

I800 M. Street, N.W.

P. O. Box 1700 Washington, DC 20036-5869 Houston,TX 77251 M. T. Hardt/W. C. Gunst Central Power and Light Company City Public Service ATrN: G. E. Vaughn/C. A. Johnson P. O. Box 1771 P. O. Box 289, Mail Code: N5012 San Antonio,TX 78296 Wadsworth,TX 77483 A. Ramirez/C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin,TX 78704 t

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

I NPF-76 & NPF-80 April 1997 Authored by:

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. Darr'll Sherwood, Ph.D.

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e Supervisor Health Physics Division and A

Peggy LoftoMrffvis,'C.[(M.

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Staff Consultant Chemistry Division Technical Review:

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leoErd M. Earls, Ph.D., C.H.P.

llealth Physicist Health Physics Division Approved by:

f y Russell Lovell Radiation Protection Manager Generation Support Department Manager l

1997 Annual Environmental &

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Annual Radiological Environmental Operating Reports SOUTII TEXAS PROJECT ELECTRIC GENERATING STATION u_________

TABLE OF CONTENTS Executive Summary 1-1 Site and Area Descn tion 2-1 e

Radiological Environmental Introduction and Summary 3-1 Radiological Environmental Operating Report 4-1 Program Description Analysis of Results and Trends Land Use Census Quality Assurance Environmental Introduction and Summary 5-1 Environmental Operating Report 6-1 Environmental Conditions Aquatic and Ecological Monitoring Main Cooling Reservoir Water Quality Compliance Air Quality Compliance Solid Waste Management Compliance Comprehensive Environmental Response, Compensation, and Liability Act Activities Chemical Control Addendum of Figures for Radiological Report 7-1 Addendum of Tables for Radiological Report 8-1 s

4D

TABLE OF CONTENTS 1

ADDENDUM OF FIGURES 1.

Radiological Environmental Monitoring Program Designated Sample location Map 7-1 2.

Radiological Environmental Monitoring Program Zone Location Map 7-2 3.

Historical Comparison of Average Quarterly Beta Activity from Indicator and Control Air Scraples 7-3 4.

Environmental Dosimeter Comparisons 7-4 l

5.

Historical Comparison of Cobalt 58 and Cobalt-60 in Main Cooling Reservoir Sediment 7-5 l

6.

Historical Comparison of Tritium Added to and Remaining in the Main Cooling Reservoir 7-6 7.

Historical Comparison of Tritium Activity of Surface Water 77 8.

1997 Radiological Laboratory Quality Assurance Program Performance 7-8 9.

1997 Performance Objectives Summary 7-9 10.

Missed Samples (with explanations) 7-10

- ADDENDUM OF TABLES l

1.

Radiological Environmental Monitoring Program 8-1 2.

Sample Media and Locations Descriptions 8-8 O 3.

1997 Radiological Environmental Monitoring Program Analysis Summary 8-15 i

l 1997 ENVIRONMENTAL REPORT l

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E xec urive S U M M ARY This report describes the sample results and the pre-environmental monitoring operational baseline values to programs conducted at the South detennine if changes in Texas Project during 1997.

radioactivity levels are included in this report are the attributable to station operations 1

Environmental Protection Plan or other causes such as previous Status, the results of the nuclear weapons testing Radiological Environmental programs and natural variations.

Monitoring Program, and the Radioactivity levels in the Land Use Census.

South Texas Project's

..WORLD CLASS ~,

Radiation and radioactivity in environment frequently fall the environment are constantly below the minimum detection PERFORMANCE monitored withm a 15-m,ile capabilities of the state-of-the-art 1

radius of the South Texas scientific instruments. Samples Project. Sampling locations are with radiation levels that cannot selected using weather, land use, be detected are below the Lower During 1997,05 m euth and water use infonnation.

Limits of Detection. The United previous year, Operation Of the

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Two types of sampling locations States Nuclear Regulatory I

South Texas Pr0iett Created n0 j

are used. The first type, control Commission requires that stations, are located in areas equipment used for radiological OdVerSe effettS Or health risks.

that are beyond measurable monitoring must be able to detect The m0ximum radiation miluence of the South Texas specified minimum limits for Project or any other nuclear certain types of samples. This exp05Ure (al(Ulated for a facility. The sample results from ensures that radiation hypotheti(OI person living Ot the these stations are used to explam measurements are sufh..ciently radiation from sources other than sensitive to detect small changes b0Undary Of the 500th Texas the South Texas Project.

in the environment. The United ProjeCl during l997 WOS l855 Indicator stations are the second States Nuclear Regulatory than One millirem. For type of stations. The samples Commission also has a required from these stations measure any

" reporting level". Licensed referente this dose may be radiation contributed to the nuclear facilities must prepare a (OmEOred10 the 360 millirem environment by the p' aject.

special report and increase their Indicator statiocs ar located in sampling if any measured Over090 OnnU0l radiation areas close to the south Texas radiation level is equal to or exp05Ure to people in the United >

Project where any plant releases greater than this reporting level.

would be at the highest No sample from the South Texas

$futes from natur0l und medic 0I concentration.

Project has ever reached or 50Ur(es. Naturalradiation Prior to imtial operat,on of exceeded a reporting level.

i l

the South Texas Project, samples 50VIC05 In the environment were collected and analyzed to C00 tribute m0SI Of the radiation detennine the amount of

( g radioactivity present in the area.

exp0Sure10 humans while These results are used as a " pre-nU(leur energy Operations operational baseline". Results Contribute le55 than One from the indicator stations are compared to both current control millirem.

I i

Measurements made are divided into four categories or pathways 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.

THE FOUR MEASUREMENTCATEGORIES

~

Airborne Pathway Waterborne Pathway The airborne pathway is sampled in areas around the The waterborne pathway mdudes somptes taken from South Texas Projed by measuring radioodivity of iodine and surface water ground water and dnnking water. Also induded particulate air filters. The 1997 oirborne results were similar to in this path are sediment sample's taken from the Main Cooling pre-operational levels with only naturolly ouurring rodiondive Reservoir ond the Colorodo River: Cesiuml37 was detected at material unrelated to operation of the South Texas Projed low leveh in one of fifteen water somples collected (som the i

Main Cooling Reservoir Tritium was the only man-mode isotope consistently detected in water sontples and was measured in the

. ingestion Pathway Mom (ooiin, Rese,voi, and,he di,<he, ond, iou,hs ons,,e the The ingestion pathway indu8es broadleaf vegetation, overage tritium level deueosed in the Main Cooling Reservoir agricultural produds and food products. Naturally ouurring and remained below the United States Nudear Regulatory isotopes were deletted of overage environmental leveh m the Cominission lim is and United Statesinvironmental Protection samples Mon-mode isotopes found in the samples were Agency drinking water stondords. Sediment samples from the '

ions # stent with values found in pre-operational samples Main Cooling Reservoir continue to show low level plant related

. isotopes The inventory of plant related isotopes in the reservoir Direct Exposure Pathway ILin bottom sedimeiit samples hos been deueos ou,e,e,, abo,,no, bee, odded,o,he,e,e,,o,,

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The direct exposure pathway measures environm' ental from plant effluents than has been undergoing radioactive radiofion doses using thermoluminestent dosimeters. These detoy As expected, the (obolt-58 hos deueosed to below levels results are tonsistent with the readings from previous years and that ton be deteded. Offsite sediment somples contmue to show (ontinue to show no effed from plant operations.

no radioottivity from the South Texas Project. This indicates i

there is no detectable effect offsite from the plant.

i9 i

The South Texas Project continues to operate with no negative effect on the population or i

l

• the environment by maintaining the calculated doses for people living in the area to less than l

one millirem per year. Environmental programs at the site monitor known and predictable 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 g

detectable impact offsite and is well within state and federal regulations and guidelines.

These programs are verified by the State of Texas and the Nuclear Regulatory Commission.

1997 ENVIRONMENTAL REPORT

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a&?,"OR Simplified Drawing of the South Texas Project I

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4 The Site ditches, sloughs and depressions.

The area surrounding the South Much of the land cast of the Texas Project is characterized by Sixty-five acres of the South Texas Project are occupied by the cooling reservoir is leased for coastal plain with fanuland and two power plants. Plant facilities cattle grazing. Approximately pasture predominating. Local 1,700 acres remam in a more relief of the area is characterized l

include a 7,000 acre main n tural state as a lowland habitat by flat land, approximately 23 i

cooling reservoir and a 47 acre and a l10-acre wetland habitat feet above sea level.

essential cooling pond. Many area was established in 1996 on smaller bodies of water onsite include Kelly Lake, drainage previ usly unused land located j

northeast of the power plants.

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The Area marsh and open water exist to reservoir provides a good resting support wildlife. The area lies in place during their migration.

j The economic base for this area is agricultural related. Most the southem region of the central The station also established a 9

of the land near the site is used flyw y nd is host to an man-made wetland habitat m abundance of nugratory birds.

1996 which continues to attract for the production of five major The local estuary environments an increasing diversity of agricultural products: beef, rice, l

pr vide the necessary habitat for migratory fowl and other grain sorghum, soybeans and a variety of fish types to wildlife.

cotton. In addition to the complete their life cycles.

The climate of the region is agriculture industry, there is j

. commercial fishing in the lower l recreational hunting and fishing subtropical maritime, with l

is also done in the area.

continentalinfluence. It is Colorado Itiver, East and West The South Texas Project is characterized by short mild Matagorda Bays, intracoastal home to inany species of winters and long hot and humid

- Waterway and the Gulf of animals. Our inhabitants m, elude summers. Rainfall is usually j

Mexico. Currently shrimp, American alligators, a family of abundant throughout the year

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oysters, and crab are the target sprey, bald eagles and several with an annual average of commercial fish while fin fishes hundred deer. In winter, literally approximately forty-two mehes.

have been commercially less hundreds of thousands of The prevailing wmd direction is g important in recent years.

w terfowl, principally migratory from south-southeast, shifting to Although the surrounding g ese as well as white pelicans north-northeast for short mtervals I

area is heavily cultivated, and the common tern, have found during the wmter months.

l significant amounts of that the plant's 7,000 acre cooling l

woodlands, thicket, brush, fields, 1997 ENVIRONMENTAL REP RT

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SITEANDAREADESCRIPTION BOTH UNITS TOGETHER How the Souh Texas Project Works PRODUCE EN0 UGH ELECTRIOTY Fossil-fueled and nuclear-heat a separate supply of water m TO SERVE 1.5 MILL l0N HOMES powered steam generatmg plants the steam generators to produce The South Texas Project is operate on the same principle.

steam that is directed through the located on l'.,300 acres in Fuel is used to produce heat to blades of a turbine generator to Matagorda. County, Texas, convert water into high-pressure prohce electricity. The steam approximately 15 miles steam. The steam is directed then goes to a condenser where a southwest of Bay City along the through a turbine to tura a separate supply of cooling water,

west bank of the Colorado River.

generator. In a fossil f.tel plant, from the reservoir turns the The South Texas Project is the heat is produced Iny buming steam back into water. The water jointly owned by llouston coal, lignite, oil or n.itural gas in is then recycled by pumping it Lighting & Power Company, a boiler. In a nucler.r plant, the back to the steam generator for Central Power & Light reactor replaces the boiler and reuse. A diagram of the plant Company, the City of Austin and the " fissioning" r,r splitting of water systems is shown on the the City of San Antonio. Until uranium atoms inside the reactor next page.

late 1997, the llouston Lighting produces heat.

In addition to its safety

& Power Company was the The fuel for a nuclear reactor systems, the South Texas Project designated Project Manager for is uranium. It is formed into has many built-in physical the owners. In November of cylindrical ceramic pellets, each barriers that would prevent the 1997, the STP Nuclear Operating about the size of the end ofyour release of radioactive materials Company assumed operational little fmger. One pellet has the in the unlikely event of an control of the South Texas energy potential of about a ton of accident. The most visible and Project and responsibility for coal Millions of these pellets imposing barriers are the four-i:nplementation of all are stacked in fuel rods that are foot-thick concrete steel environmental programs, arranged into assemblies that reinforced containment buildings The South Texas Project make up the core of the reactor.

(the two dome-like structures).

consists of two 1,250 megawatt-The use of uranium allows us to These massive structures rest on electric Westinghouse conserve natural gas, oil and 18-foot-thick concrete and steel pressurized water rearurs. Unit coal.

foundations. Inside, each reactor 1 received a low-power testing A nuclear plant starts vesselis surrounded by two license on August 21,1987, operating when control rods in concrete shield walls, one seven obtained initial criticality on the core are withdrawn, enabling feet thick and the other 3.5-feet March 8,1988, and was declared the fissioning process to begin.

thick. The reactor vessel itself, commercially operational on Water flowing around the fuel where the nuclear reaction takes August 25,1988. Unit 2 rods picks up heat from the fuel, place, has steel walls varying in received a low-power testing and the hot water is piped to -

thickness from approximately license on December 16,1988, large heat exchangers called four to six inches.

obtabd initial criticality on steam generators. The water in March 12,1989, and was the reactor is pressurized to declared commercially prevent boiling. This is why the

( ) operaticaal on June 19,1989.

South Texas Project's reactors are Both units together produce called " pressurized water enough electricity to serve 1.5 reactors."

million homes.

This hot, pressurized water

SECONDARYLOOP Simplified Drawing of the 44

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RE RVOIR (7000 ACRE LAKE) 1 entuany tOOp co"'A*"a "r ma,

ut The Site ditches, sloughs and depressions.

The area surrounding the South Much of the Imd cast of the Texas Project is characterized by Sixty-five acres of the South Texas Project are occupied by the cooling reservoir is leased for coastal plam with farmland and two power plants. Plant facilities e ttle grazing. App [oximately pasture predommating. Local 1,700 ams mmam, m a more relief of the area is characterized i

l include a 7,000 acre main n tural state as a lowland habitat by flat land, approximately 23 cooling reservoir and a 47 acre and a 110-acre wetland habitat feet above sea level.

essential cooling pond. Manv am w s established in 1996 on

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The Area marsh and open water exist to reservoir provides a good resting The economic base fbr this support wildlife. The area lies in place during their migration.

the southern region of the central The station also established a area is agricultural related. Most of the land near the site is used flyway and is host to an man-made wetland habitat m for the production of five major abundance of migratory birds.

1996 which continues to attract The local estuary environments an increasing diversity of agricultural products: beef, rice, grain sorghum, soybeans and pr vide the necessary habitat for migratory fowl and other cotten. In addition to the variety of fish types to wildlife.

complete their life cycles.

The climate of the region is agriculture industry, there is o commercial fishing in the lower Recreational hunting and fishing subtropical maritime, with is also done m the area.

continentalinfluence. It is Colorado River, East and West The South Texas Proj,ect is charactenzed by short mild,

Matagorda Bays, intracoastal home to many species of,

winters and long hot and humid

- Waterway and the Gulf of ammals. Our m, habitants include summers. Rainfall is usually Mexico. Currently shrimp, American alligators', a family of abundant throughout the year oysters, and crab are the target commercial fish while fin fishes sprey, bald eagles and several with an annual average of hundred deer. In winter, literally approximately fbrty-two mehes.

have been commercially less hundreds of thousands of The prevaihng wmd direction is g

important in recent years.

waterfowl, principally migratory from south-southeast, shifting to Although the surrounding geese as well as white pelicans north-northeast fbr short intervals area is heavily cultivated, nd the common tern, have fbund during the wmter months.

significant amounts of woodlands, thicket, brush, fields, that the plant's 7,000 acre cooling 1997 f N VI R O N M E N TA L REPORT

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R ADI LuGlCALENVIR NMENTAL lNTRODUCTIONAND3UMMARY l

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l RADIOLOGICALENVIRONMENTAL lNTRODUCTIONAND3UMMARY There were three items of operation. The radiological interest identified by this doses received by the general program during 1997. Below is a public from plant operations short discussion of these items.

were less than one millirem which is insignificant when 4 Tritium concentration in the compared to the 360 millirems Main Cooling Reservoir average annual radiation continued to decline in 1997 exposure to people in the United States from natural and medical while the ditches and sloughs onsite increased in sources.

concentration as expected.

SUCCESS THROUGif 4 Cobalt-60 levels in reservoir bottom sediment samples TEAMWORK vary substantially but remain The purpose of the Radiological within the expected range.

Environmental Monitoring The inventory of Cobalt-60 in the Main Cooling Proghom is to Verify that the Reservoir has decreased South Tex 0s Project is operating because of equipment a

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installed to reduce T

radioactive efHuents. Also, withinits design parameters and

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to assure plant effluents do not Cesium-134 and Manganese-54 were detected in reservoir y

resultin a significant bottom sediment samples.

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The concentrations were so 9

off-site. This objective is l

low that they may be " false" positive values.

Accomplished by thoroughly 4 Cesium-137 was identified in Ovaluating kn0Wn und f

preditt0ble relationships one of fifteen water samples from the Main Cooling between the E 0nt and the 1

Reservoir. The concentration was very low and is of no environment,while performing -

radiological consequence.

Odditional eVulV0tions Where Operation of the South Texas

,g Unique relationships mny exist.

Project continues to have no Approximately 900 Onulyses of O

g g detectable radiologicalimpact air, Water, sediment, Veget0t,0n, l

offsite. Samples analyzed from the oft-site sampling stations and meat s0mples Were continue to show no radiological contribution from plant performed during 1997 1

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s RADIOLOGICALENVIRONMENTAL P E R ATI N G R E e O RT l

R A D I,O L O G i C A L E N v l R O N M E N T A L O P E R ATIN G R e e O RT Program Desuiption samples analyzed are ANALYSIS OF RESULTS l

accompanied by a control l

The South Texas Project sample, it should be noted that AND TRENDS l

initiated a comprehensive pre-this practice is not always j

operational Radiological p ssible or meaningful with all Environment samples from Environmental Monitoring media types. Fluctuations in the areas surrounding the South c neentration ofradionuclides Texas Project continue to Program in July 1985. That program terminated on March 7, nd direct radiation exposure at mdicate no significant indicator stations are evaluated in radiological contribution from 1988, when the operational relation to historical data and the plant operation. Analytical program was implemented. The control stations. Indicator values from offsite mdicator pre-operational monitoring stations are compared to sample stations continue to trend program data fonns the baseline against which operational characteristics identified during yvith the control stations. Onsite changes are measured.

the pre-operational program to indicator samples continued to Critical pathway analysis m nitor for radiological effects increase or decrease in measured requires that samples be taken fmm pl nt operation.

values at their expected rates.

Average quarterly beta from water, air, and land environments. These samples activity from three nsite indicator are obtained for evaluation of stations and a potential radiation dose to man.

single control stat, ion Sample types are based on

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f r air p rticulate established pathways and from samples have been experience gained at other compared histoneally nuclear facilities. Sample fmm 1988 through locations were determined afler 1997 (see Figure 3).

considering site meteorology, The average of the Colorado River hydrology, local 3 -

nsite indicators trend demography and land use.

closely with the offsite Sampling locations are further evaluated and modified Several sample identification control values. The according to field and analysis m thods are used to implement comparison illustrates experience. Table 1 lists the the program. Figure 1 includes that plant operations are not minimum sampling locations and two maps that identify permanent having an impact on air frequency of collection.

sample stations. Descriptions of particulate activity even at the Sampling locations consist of sample stations shown on Figure Sensitive Indicator Stations (#1, I are found in Table 2. Table 2

1. 15, #16). These stations are indicator and control stations.

Indicator stations are locations also meludes additional sampling located near the plant and are on or ofTthe site that may be I e ti ns and media types that located downwind from the plant influenced by plant discharges m y be used for additional based on the prevailing wind O during plant operation. Control inf rm ti n. Figure 2 illustrates direction. The beta activity the zones used when collection measured in the air particulate stations are located beyond the measurable influence of the 1 cations are not permanent samples is from natural South Texas Project or any other sample stations.

radioactive material. As a r utine part of the program, we nuclear facility. Although most i

RADIOLOGICALENVIRONMENTAL O P E R ATIN G R E e O RT QUAUTY ASSURANCE Radiological Laboratory Quality Pacific Northwest Laboratories Measurement j

Quality assurance is the Assurance Program.

Assurance Program.

j planned or systematic actions 4 Routine instrument control

& Participation in an interutility necessary to provide adequate checks including calibrations measurement assurance confidence that an item or and calibration verification.

program.

facility will perform 4 Annual testing of analysts' satisfactorily. Quality assurance fbr the Radiological Laboratory ability.

Periodic reviews by outside is measured and assessed by four 4 Intralaboratory quality distinct methods.

control analyses of samples.

OrganiZali0ns Or agencies 4 Self assessments of quality (e.g. United States Nudear Quality.

control activities.

Regulatory Con. mission, 4 Performs periodic American Nuclear Insurers, surveillance of specific lnterlab0 rat 0ry Measurement etc.).

activities throughout the year.

ance NgM M enme 4 Perfonu programmatic

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4 Performs comprehensive audits.

consistency with the rest of the content and effectiveness t

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4 Provides for an independent industry.

n ent1

> it ) i techmcal review by a 4 Participation in the Nuclear Program implementation to techmcal specialist. (Not Energy Institute / National assure license compliance perfoimed in 1997)

Institute of Standards and and establish the degree of Technology Measurement compliance with select Assurance Program for the operational guidelines.

Nuclear Industry.

4 Participation in the Battelle

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l LAND USE CENSUS if any changes in the cddition, a survey is performed

. Radiological Environmental to verify the nearest residents Monitoring Program are needed.

within five miles of the South

'The Annual Land Use Census The results of the survey.

Texas Project generatmg umts m is performed to determine if any change has occurred in the.

mdicated that there were no each of 16 sectors. Listed below location of residents and th'e use changes required in the prograin.

are the nine sectors with The census is performed by residents and distance to the of the land within five miles of contacting area residents and nearest residence m each sector.

the South Texas Project I cal government agencies who generating units. The information is used to detemiine pr vide the information. In

- Srsigt 5

,DulaDie Location

- (approx. miles) -

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selkirk Island 1sE' 3.51

- Selkirk Island sw 4.5 '

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Ashby-Buckeye Road :

iNW T 4.5 Wondirk Road NNW.

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Runnells Ranch (FM 1468)

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' 3,5 Runnells Ranch (FM 1468) -

ltems of interest that were noted during the census.

D A wetland prairie project of 4 There has been no use of 4 There has been a small 110 acres is currently.

water from the Colorado decrease in the arnount of

- pro'viding a habitat for.

River collected below the blue crabs available due to migratory birds. The habitat Bay City Dam for irrigation heavy fishing in the local is' located northeast of the ofcrops.

area.

power plants on the South Texas Project site.

D No commercial dairy 4 There has been a minor operates in Matagorda decrease in the amount of D A boat launch was installed County and there is no source rice and grain sorghum at the FM 521 River Park at of milk within the five mile grown in the area. The cotton the intersection of the zone.

acreage has decreased by Colorado River and FM 521.

approximately ten percent but 4 There were no identified the soybean acreage has

'.DI Construction was stopped at commercial vegetable farms increased by approximately g g the Molten Metals.

located with the five mile fifty percent.

Technology chemical plant zone.

adjacent to the Celanese Petrochemical Plant.

1 9 9 7-E N VI R N M E NTA L REPORT f

Reviews, surveillance and percent difference, but this is for interlaboratory quality control audits have determined that the expected because the samples was 96.0 percent. The programs, procedures and concentrations are at the performance objective for personnel are adequate and environmental level where there achieving 15 percent precision perfonn satisfactorily, is large statistical variation.

for replicate interlaboratory The measurement capabilities Six performance objectives quality coritrol samples was 99.0 of the Radiological Laboratory have been identified to monitor percent. The performance are demonstrated by participating the overall success of program objective of analyzing required in interlaboratory measurement implementation. They are samples in order to meet their assurance programs. These analytical accuracy, analytical regulatory sensitivities was 100.0 programs provide samples that precision, analysis sensitivity, percent. Samples were analyzed '

are similar to those measured for timeliness of sample analysis, within 30 days of receipt 96.2 the Radiological Environmental scheduled collection and percent of the time. Of the Monitoring Program.

analysis, and percent quality required samples,98.5 percent The laboratory continued to control samples analyzed. The were collected and analyzed.

operate at a high perfonnance performance objectives have Missed samples are identified in levelin these programs. All been summarized and the Figure 10. Quality control measurements were in agreement performance results are found in sample load was 31.0 percent in with industry-accepted criteria.

Figure 9. The Radiological 1997.

The perfonnance is demonstrated Laboratory maintained high In summary, the Radiological in Figure 8 for the four performance levels in 1997.

Environmental Monitoring intercomparison programs in All of the performance Program is conducted at a high which we participated. The objectives are consistent with the level of quality for completeness, interlaboratory comparison may perfonnance of previous years.

precision and accuracy.

appear to have an excess of The performance objective for analyses outside of the 15 achieving a 15 percent accuracy 7;s, 7 7.,.sy n -....;..

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RADIOLOGICALENVIRONMENTAL P E R ATIN G R e P O RT i

Cesium-137 was present in year. This indicates that almost near equilibrium with the the environment before the half of the tritium is removed reservoir. The tritium operation of the South Texas from the reservoir each year.

concentration has increased in Project. Cesium-137 was The majority of the tritium the sloughs and ditches through identified in one indicator and escapes from the reservoir by 1997 because it takes one to two one control station for shoreline evaporation because the flow years for water to move from the sediments on the Colorado River.

from the relief wells is not reser, sir to the relief wells. The Also, there was Cesium-137 enough to account for the tritium water in the reservoir and the i

identified in one of the three removed. Rain water was effluent streams is not used as goose samples taken in 1997.

collected for three years drinking water. The only way it These results are similar to pre-(1992 - 1994) to determine if the could be introduced into humans operational values. Cesium-137 is by eating fish grown in the was detected in one of fifteen water. If a person ate forty water samples collected from the pounds of fish a year from water Main Cooling Reservoir at very that was at the United States low concentrations. No other e

Nuclear Regulatory Commission isotopes released from the plant reporting level (30,000 were identified which indicates picoCuries per kilogram) less that the plant was probably not than one millirem would be I

the source of the Cesium-137, received. This is insignificant Tritium is a radioactive hydrogen isotope arid is compared to the almost twenty millirem a year each person produced during the operation of receives from the naturally the plants, iritium produced in

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occurring radioactive potassium the reactors is a part of the water 3Eq M in the body.

molecule. Waste water is treated

, _fMDd Some samples are collected to remove impurities before and analyzed that are not release, but because tritium is tritium was remaining in the required by our licensing chemically part of the water

!.. al area. Tritium was not documents or internal procedures molecule, it cannot be removed.

found in any rain water samples.

but are obtained to provide Some of the tritium is released Tritium enters the sloughs additional assurance that the into the atmosphere and the and ditches of the site as runoff public and the environment is remainder is released into the from the relief wells that being protected from any adverse Main Cooling Reservoir. The surround the reservoir. The effect of the plant. These tritium escapes from the Main tritium concentration in eight samples include pasture grass, Cooling Reservoir by surface water sample points is water samples from various evaporation and by percolation shown in Figure 7 for 1988 ditches and sloughs onsite and air from the relief wells that are a through 1997. The specific samples near communities or part of the dikds stabilization sample point locations can be other areas ofinterest. The g system. Shown in Figure 6 is the found in Table 2. The onsite results of these analyses indicate amount of tritium released to the sloughs and ditches have that there is no detectable Main Cooling Reservoir each continued to increase in radiological contribution from year and the amount present concentration and are expected to plant operation to the during the last quarter of each continue increasing until they are environment.

4s stations according to interest in sediment. It should be type. Figure 4 indicates noted that Cesium-134 and

,t changing conditions in Manganese-54 are difficult to Vg,

the area of the measure in sediment samples C

individual stations. The because of gamma interferences

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average of the Control from naturally occurring isotopes Stations is higher than that are present. At the low s

the other stations levels these have been identified, because station #23 is the possibility exists that these perform gamma analysis on in an area that has a slightly could be " false" positive quarterly composites of the air higher natural background, measurements. The analysis of particulate samples to determine probably due to the soil bottom sediment samples in the j if any activity is from the South composition. Considering the future will confirm or deny the Texas Project.

information above and the trends current analysis Cesium-137 l

Direct gamma radiation is shown in Figure 4, it is clear that measurements are approximately monitored in the environment by the power plants are not adding equal to the pre-operational i

thermoluminescent dosimeters to the direct radiation in the values. In 1995, a slight increase I

l located in 40 locations around environment, was observed; however, the South Texas Project. The natural Bottom sediment samples are increase was not enough to l

t direct gamma radiation varies taken in two locations in the determine ifit was from the according to location because of Main Cooling Reservoir each operation of the plants.

l differences in the natural year. The positive results from Subsequent Cesium-137 i

radioactive material in the soil, two plant-produced radioactive measurements through 1997 have the moisture content of the soil material Cobalt-58 and Cobalt-remained consistent with the l

and the vegetation cover. Figure 60, are shown in Figure 5.

previous data except when 4 compares the amount of direct Cobalt-58 and Cobalt-60 Cobalt-60 increases above the i

gamma radiation measured at the inventory in the reservoir has average value, so does the plant since the fourth quarter of been decreasing since 1992 Cesium-137, 1985 for three different types of because of equipment installed to stations. The Control Stations reduce radioactive ellluents. The are greater than 10 miles from amount of Cobalt-58 has the site and are in the direction of decreased to below levels that f

l the least prevailing winds can be detected. The (stations #23 and #37). The concentration of Cobalt-60 in the g

Sensitive Indicator Stations are reservoir bottom sediment in the directions that the wind samples varies, but is within the blows the most and are one mile expected range. Cesium-134 was

~

from the power plants on Farm-identified in one sediment to-Market Road 521 (Stations #1, sample and Manganese-54 was bl

1. 15 and #16). The Indicator identified in three sediment I

Stations are the remainder of the camples. The concentration of stations up to and including the two isotopes are below the

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J Station # 42. The values plotted required Lower Limit of are the averages for all of the Detection for the isotopes of 1997 ENVIRONMENTAL REPORT

I a

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ENVIRONMENTAL lNTRODUCTIONANDbUMMARY l

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t e

ENVIRONMENTAL l N T R O D U CTIO N A N D 3 U M M A RY i

SOUTH TEXAS PROJECT Notewonhy IW D Material recycling etTons environmental accomplishments expanded both m, quantity STRIVES TO IMPROVE ON PAST at the South Texas Project and scope.

SUCCESSES AND PREPARE FOR discussed in this report include:

FUTURE CHALLENGES 4 The station maintained an 4 The man-made wetland excellent wastewater The South Texas Project is habitat established in 1996 in discharge compliance record.

• committed to the production of partnership with the United electricity in a safe, reliable, Strtes Fish and Wildlife Commitment to economical and environmentally Service, Ducks Unlimited, environmental responsibility is

~

sound manner from nuclear Texac Parks and Wildlife, the an integral component of the energy. The station's programs, United States Department of South Texas Project operating policies and business plan Agriculture Natural pol cy. This commitment is a objectives reflect this Resources Conservation core element in the South Texas commitment. This commitment Service and local Project vision of a world class is also embodied in the efTorts of environmental organizations power producer. Through station station personnel who develop, continued to attract an goals, financial resources, implement and monitor site increasing diversity of programs, personnel, procedures, environmental protection migratory waterfowl and training and communication, the programs and compliance, other wildlife.

South Texas Project strives to improve on past successes, 4 Ilazardous waste generation operate responsibly for the public decreased significantly, g od and prepare for future challenges.

. ENVIRONMENTAL PARTNERSHIP This Annual Environmental 0perating Report describes nonradiological environmental conditions

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and performance at the South Texas Project from January 1 through December 31,1997. During this

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eriod, the South Texas Project continued to operate in an environmentally responsible munner.

The 1997 assessment included herein illustrates g

that the South Texas Project maintained high standards of environmental performance and compliance throughout M97.

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ENVIRONMENTAL P E R ATIN G R e e a RT ENVIRONMENTAL Colorado River. This area drought conditions early in 1996 provides an important habitat for and higher than average annual CONDITIONS birds and other wildlife. A spoil rainfall in 1997, progress impoundment constructed in continues toward this goal.

Environmental conditions 1972 by the United States Army For the second project, the and peribnnance at the South Corps of Engineers is included in South Texas Project and Houston Texas Project are closely this area. In addition, a 110 acre Industries incorporated initiated 4

monitored by environmental staff wetland habitat area that attracts a joint effort with Ducks at the South Texas Project.

a variety of bird groups and other Unlimited, Texas Parks and llouston Industries incorporated wildlife was established in 1996 Wildlife, the United States Fish (formerly llouston Lighting &

on previously unused land and Wildlife Service, and the Power Company) provided located northeast of the power United States Department of support and technical assistance plants. The remaining area of Agriculture Natural Resources to the South Texas Project and the site offers diverse habitats for Conservation Service to establish supplemented evaluations of the mammals and several groups of a 110-acre wetland habitat for station's environmental program birds. Environmental stafT migratory waterfowl at the performance in 1997.

regularly monitor the site's station. This habitat area found Additionally in 1997, members environs for changing immediate favor with a variety of of the Texas Natural Resource conditions. Ecological bird groups and other wildlife Conservation Commission conditions onsite in 1997 and has continued to support an conducted a potable water remained generally unchanged increasing diversity of plant and sanitary survey at the station.

and satisfactory.

animal species. The wetland This section of the report The South Texas Project project received the Ducks discusses the South Texas continued to develop two natural Unlimited 1996 Habitat Project's environmental program resource management projects Conservation Award. Additional perfomiance and compliance initiated in 1996. The South enhancements for this project are status during 1997.

Texas Project first initiated a planned in 1998.

prairie restoration and enhancement project at the AQUATIC AND ECOLOGICAL station in partnership with the United States Fish and Wildlife MONITORING Service and local environmental E.

organizations. The South Texas The South Texas Project Project was selected because of location falls within the Texas its prime location within the Land Resource Area designation Texas coastal prairie ecosystem as coastal prairie and can be and because ofits existing divided into two broad biodiversity. The primary goal ecological areas based on of the prairic restoration project g topography, soils, and is to develop a native prairic l

• F vegetation. The bottomland area grass seed bank to provide native is a swampy, marshy area that seed ihr future restoration efforts occupies approximately 1700 along the Texas coastal prairies, acres of the site near the Although initially hampered by 1

l

l The South Texas Project The alligator population in offer the key ingredients wetland habitat project, as well the Main Cooling Reservoir and necessary to sustain the extensive as the site in general, is located the surrounding wetland habitats wildlife population at the South l

on the state-sponsored Great remained healthy in 1997. In Texas Project.

Texas Coastal flirding Trail that addition, a healthy l

will ultimately extend along the population of white-entire Texas Gulf Coast from tailed deer continued

• 13rownsville to the Louisiana to be observed border. During infonnal and although in lower (brmal bird surveys conducted by numbers than

• llouston Industries incorporated previously observed personnel in 1997, several bird in the 1980's. The up species listed on the State and station is currently (

federal threatened or endangered considering instituting R list were observed at the wetland a management

*~ _

habitat and other site areas.

strategy to enhance These include the bald eagle, both the quantity and peregrine falcon, wood stork, quality of the reside it herd.

MIN C00UNG RESERVOIR white-faced ibis, wood ibis and Although no specific site white-tailed hawk.

aquatic monitoring studies were Additional migratory and required in 1997 by the United Under normal plant operating resident bird species were States Environmental Protection conditions, cooling water for the plants is diverted from and observed through infonnal Agency or the State of Texas, th surveys of the site's diverse South Texas Proj,ect has returned to the Main Cooling natural and man-made habitats.

continued to monitor populations Reservoir. The Main Cooling Reservoir is a 7,000 acre, above The South Texas Project ofimportant wildlife species t grade, olT-cliannel reservoir continues to provide vital habitat detect population changes smee impounding 202,600 acre-feet of for over 125 different species of early in the construction phase of wintering and resident birds the station. Survey results water at a maximum permitted j

I operating level of 49 feet mean meludmg the common tem and indicate that the site provides I

sea level. The site, however, white pelicans. Intensive bird high-quality habitat m which a maintains a maximum

, nesting continues throughout the wide range of ammals hve and operational level of 45 feet mean 1

lowland habitat, particularly m a continues to attract extensive heron rookery around the wildlife populations, ofrermg a sea level. Reservoir makeup i

,, perimeter of Kelly Lake. One refuge for resident species as water is withdrawn intermittently from the adjacent Colorado i

state biologist estimates tilat the well as seasonal migrants. The River. The ultimate heat sink for i

internal Y-dike of the Main lowland habitat located between the plants is the Essential Cooling Reservoir hosts one the Colorado River and the east Cooling Pond which is a 46.9 third of the known nesting bank of the Mam Cooling acre, below grade, off-channel colomes of the common tern.

Reservoir offers a sigmficant reservoir impounding 388 acre-Special precautions are taken source of water year-round.

feet of water at a maximum each spring to protect the nesting These natural resource areas, m.

operating level of 26 feet mean l

areas on the internal dike's slopes concert with numerous additional sea level. Water Right Permit and roadways.

wetland and grassland areas, i

i 1997 E N VI R O N M E N TA L REP RT

]

E s vlR O N M E N T A L O P E R ATIN G R t e o RT No. 3233, as amended, issued by WATER QUAUTY COMPUANCE radioactivity as required by the Texas Water Rights applicable regulations to ensure Commission, authorizes the the health and safety of site Water usage and wastewater w rkers. Reports identifymg maintenance of these reservoirs, treatment at the South Texas gmund and surface water use are impoundment of water m the Project are regulated under the reservoirs diverted from the submitted annually to the Texas federal Safe Drinking Water Act, Natural Resource Conservation Colorado River and circulation, the Federal Clean Water Act, and diversion, and use of water from Commission. Monthly the Texas Water Quality Act.

the reservoirs for industrial m nitoring reports are submitted Collectively, these acts provide to the Texas Natural Resource purposes in the operation of th regulations for safeguarding Conservation Commission and plant. This permit also limits the public drinking water supplies rate of diversion from the the United States Environmental and maintaining the integrity of Protection Agency for Colorado River, Other state and federal waters. The wastewater discharges.

compliance documents South Texas Project uses both The Federal Clean Water Act,

- describmg South Texas Proj.ect surface water and groundwater as amended in 1987, requires water rights include Certificate for station purposes.

pennits for storm water ofAdjudication 14-5437 issued Groundwater supplies onsite discharges associated with by the Texas Water Commission, drinking water for station industrial act,vity from a point Contractual Permit No. CP-327, i

personnel.- Groundwater is also

. as amended, and the contract source. The South Texas Project utilized to supply makeup water Storm Water Pollution between llouston Lighting &

for the Essential Cooling Pond, Prevention Plan. implemented in Power Company and the Lower service water, firewater and other October of 1993, ensures that Colorado River Authority. Th onsite industrial uses. Surface tential pollution sources at the South Texas Project diverted water from the Main Cooling P.te are evaluated and appropri 65,633 acre-feet from the Reservoir and the Essential si Colorado River in 1997 for the measures selected and Cooling Pond is utilized as impi mented to prevent or Main Cooling Reservoir fill cooling water for plant activities.

c ntrol the discharge of operations while preserving Water from the Colorado River pollutants m, storm water runotT.

adequate freshwater flow supplies makeup to the Main The South Texas Project conditions for downstream bay Cooling Reservoir via currently has six wastewater and estuarine environments. The intermittent pumping periods.

utfalls which melude sanitary highest Main Cooling Reservoir Wastewater discharges are elevation for 1997 was 45.4 feet w ste discharges, discharge from monitored as applicable for each the Neutralization Basm of the and the lowest elevation was outfall for pil, total suspended Nonradioactive Chemical Waste 39.2 feet which is within the solids, oil and grease content, Treatment System and discharge normal operatinglevels of the temperature, and/or biological reservoir, fhe structural fr m the Oily Waste Treatment oxygen demand to ensure no conditions of the reservoir System. These outfalls are adverse impact to the internal and discharge to the remained satisfactory and environment occurs. Drinking Main CoolingReservo,ir. The g g unchangedin 1997, water is routinely monitored for Main Cooling Reservoir bacteriological contamination, blowdown outfall discharges to volatile organic compounds, the Colorado River.

copper, lead, pesticides, herbicides, heavy metals and

The station continued its Nuclear Regulatory Commission.

fossil-fueled boilers and outstanding wastewater The station promptly corrected emergency diesel generators, h

discharge compliance these conditions and maintained emissions resulting from onsite performance record in 1997, an approximate 99.5 percent fire-fighting training, and Wastewater discharges in 1997 wastewater discharge compliance asbestos removal from met state and federal water record in 1997.

renovation or demolition

, quality standard expectations.

projects. Asbestos removal With prior approval and is also strictly regulated for guidance from the United States worker protection by the

. Environmental Protection Occupational Safety and Agency allowing a conditional licalth Administration.

bypass of the nonnal blowdown p gc*C discharge point for essential fossil-fueled mamtenance activities during Erm..ssion Sounes February and September of 1997, the South Texas Project completed necessary repairs to The South Texas Project the inlet and outlet valves of the has maintained one oil-fired condenser water boxes in each of auxiliary steam boiler to the two electric generating units, furnish steam for deaerator Discharges resulting from these startup, turbine gland seals, activities complied with all of the and radioactive liquid waste conditions and limitations processing when steam is established by the United States not available from the Environmental Protection Agency for these activities.

nuclear steam supply x

system. In 1994, the station Functional testing of the station's completed an extensive Main Cooling Reservoir AIR QUAUTY COMPUANCE restoration orthe auxiliary steam blowdown valves necessitated boiler unit that included the re-one other discharge from the design and installation of a new Air emission sources at the Main Cooling Reservoir which boiler control system. Another South Texas Project fall under was conducted under standard auxiliary steam boiler is non-he scope of air poHution permit conditions early in 1997, operational and scheduled for regul tions promulgated under On two occasions in 1997, the demobilization.

the Texas Clean Air Act and the

-. station slightly exceeded the in addition to the auxiliary fI

"" A ^

C daily oil and grease maximum steam boiler at the South Texas numemus assodad permit parameter for the Oily Project, there are 18 diesel am ndments. The purpose of Waste Ticatment System (Outfall generators located onsite. These hese regulations is to pmtect air 201, an internal outfall) which diesels are designed to provide ms umes fmm polludon by were reported to the Texas emergency power to various c ntmumg or abating air Natural Resource Conservation plant systems or buildings in the p llution and emissions.

Commission, United States event ofloss of power. Operation 8"'"

" s umes at Environmental Protection of these generators as internal the South Texas Proj.ect includ Agency and the United States combustion engine driven 1997 ENVIR NMENTAL REP RT

E N VIR O N M E N T A L O P E R ATIN G R E e O RT l

generator sets used only for buildings onsite and also for the Liability Act and by the Texas emergency service is authorized removal of certain coatings Natural Resource Conservation under Texas Natural Resource containing fixed asbestos when Commission under the Texas Conservation Commission applicable. Buildings are Solid Waste Disposal Act. The Standard Exemption List No. 5.

inspected for the presence of Texas Natural Resource asbestos prior to demolition.

Conservation Commission Fire-fighting Adivities regulates the collection, 50UD WASTE MANAGEMENT handling, storage, and disposal l

f soHd wastes including The South Texas Project COMPUANCE hazardous wastes. The conducts onsite training of selected employees on proper

!r nsportation of waste materials fire-fighting techniques. Most Solid waste management is regulated by the United States onsite instruction consists of procedures for hazardous and Department of Transportation.

training on the proper use of a nonhazardous wastes generated The South Texas Project is Gre extinguisher. Advance at the South Texas Project ensure registered with the Texas Natural I

Resource Conservation notification of firefighting that wastes are properly training sessions is provided to dispositioned in accordance with Commission as a large quantity the Matagorda County applicable federal, state, and generator ofindustrial solid Environmental Services and the local environmental and health wastes including hazardous wastes. Texas NaturalItesoure-Texas Natural Resource regulations. By regulatory Conservation Comnussion Conservation Commission as definition, solid waste includes required by state regulation.

solid, semi-solid, liquid, and regulations require that gaseous waste material.

ndustrial solid wastes generated Asb R

I Nonradioactive wastes generated at the South Texas Project be identified to the Commission.

at the South Texas Project are These wastes are identified in the regulated primarily by the United Regulations addressing States Environmental Protection Texas Natural Resource asbestos removal are found in the Conservation Commission Agency under the Resource Umted States Environmental Conservation and Recovery Act Notice of Registration issued for Protection Agency National and its amendments, the the South Texas Project. The Emission Standards for Comprehensive Environmental registration is revised whenever llazardous Air Pollutants and Response, Compensation, and there is a change in waste advance notification is provided as applicable to the appropriate jurisdictional agency--in Texas, the Texas Department of Health--

for asbestos removal and demolition activities. Advance notification is provided g accordingly of demolition of 1

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management practices at the site, thermal energy recovery.

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Ilazardous waste accumulation at Used oil and diesel fuel (N f 1

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the South Texas Project is are sent to a recycling limited to a maximum period of vendor fbr re-processing.

A 90 days. The Resource Lead-acid batteries are gg. 4 j Conservation and Recovery Act returned, when possible, 44;

, and Texas Solid Waste Disposal to the original Q; iph Act also require the use of proper manufacturer for recycle QW

% }g storage and shipping containers, or are shipped to a N

@d

, labels, manifests, reports, registered battery recycler, 3

personnel training, a spill control thereby reducing the OtMd plan and an accident contingency volume of hazardous waste that plan. Plant personnel inspect might otherwise be generated.

Nonradioactive Waste areas throughout the site to An extensive site paper recycling Management Activit.ies ensure wastes are not stored or program results in the collection accumulated inappropriately.

of several tons of paper each solid waste compliance yar. In 1997, the South Texas Nonradioactive solid waste that assessment was also conducted at Project doubled the amount of cannot be shipped for recycling the site by llouston Industries paper recycled. The station is shipped for disposal.

Incorporated environmental collected approximately 30 tons Municipal-type trash is personnel early in 1997. Waste of paper for recycling. Every transported to the county landfill handling and disposal activities one ton of paper recycled saves transfer station for appropriate are summarized and documented approximately 17 trees, saves disposition while construction-in a waste summary report for enough energy to power the related non-combustible, inert the South Texas Project average home for six months and debris is placed in the onsite submitted annually to the Texas climinates approximately three landfill as specified on the South Natural Resource Conservation cubic yards oflandfill material.

Texas Project's Solid Waste Commission.

The station also embarked on an Notice of Registration. Waste extensive recycling campaign for minimization efforts and Nonradioactive Recychng road base material.

heightened employee awareness Approximately 7,000 to 8,000 allowed the South Texas Project Activit.ies tons of road base material were to achieve an approximate 64 recycled for onsite use in 1997.

percent reduction in hazardous The Resource Conservation Plant personnel continue to waste generated at the site from

,,, and Recovery Act encourages explore areas where recycling the previous year. Substantial the recycling, recovery, or reuse activities may be expanded or source reduction efforts were of waste when possible to reduce new recycling activities initiated.

devoted towards preventing the the amount of waste being introduction of halogenated l

disposed ofin landfills. The solvent waste to used oils l

South Texas Project ships waste generated at the station. Thesc oil, grease, electrohydraulic efforts were effective and fluid, scalants, adhesives, additional efforts are being antifreeze solution and solvent focused in 1998 on source for fuel blending and reduction of halogenated solvent use in general.

1997 ENVIRONMENTAL REP RT

ENVIRONMENTAL P E R ATIN G R e e o RT i

COMPREHENSIVE Natural Resource Conservation preceding calendar year to the Commission, United States Texas Department of Health.

1 ENVIRONMENTAL Environmental Protection

^8"" y. L cal Emusency RESPONSE COMPEN-Planning Commission and the CHEMKAL CONTROL i

SATION, AND LIABILITY united States Nuclear R 8"I"' ry C mmissi " th t Th South Texas Project ACTACTIVITIES resulted when a tractor mower maintains an Expendable fellinto the forebay. The Materials Program to evaluate estimated quantity involved was those chemicals and products Hazardous Maten,alincident less than one gallon of diesel.

that have the potential to come in

Response

P.i st ti n retri ved the mower, contact with plant components.

imtiated actions that prevented Disposal requirements are i

The Comprehensive gjgfado i er n c pl ed "W E Environmental Response, cleanup of the forebay. No other HstM in the stanon,'s ExpendaW "EE * "

Compensation, and Liability Act significant or consequential spills created a federal authority and occurred in 1997.

source of funding for responding procedures provide additional to spills and other releases of disposal, storage and use i

hazardous materials, pollutants, Superfund Amendment and guidance for both expendable i

or contaminants into the Reauthorization Act Title ill materials and those materials that environment. As a result of this fall outside the scope of the Compliance Expendable Materials Program.

Act, reportable quantities were established for several hundred The South Texas Project utilizes chemicals. Spills exceeding The Comprehensive standard operating procedures, these parameters must be Environmental Response, policies and programs to reported to the United States Compensation, and Liability Act minimize the generation of waste Environmental Protection was amended and enhanced in materials. Workers are Agency. The South Texas 1986 to establish new programs encouraged to take only the Project emphasizes awareness for addressing emergency amount of material necessary to training on the prevention of preparedness and community perform ajob. Plant personnel epills while maintaining station right-to-know. This amendment conduct routine inspections of readiness to respond should a is known as the Superfund chemical storage in the plant Amendment and Reauthorization area. These programs and spill occur. Station spill response team members receive Act. The South Texas Project controls aid in minimizing the annual refresher training in conducts site wide inspections to amount of waste generated at the hazardous material incident identify and record hazardous South Texas Project and reduce response. Early in 1997, the products and chemicals on site as opportunities for inadvertent South Texas Project reported a required by the Superftmd spillage of material.

h minor oil sheen in the Reservoir Amendment and Reauthorization Act and the Texas llazard Makeup Pumping Facility Commumcation Act. Annual forebay area to the Texas General Land Office, Texas reports are submitted for each

l l

ENVIRONMENTAL plant personnel and any activities Federal, State, or local ager.:ies that involved a potentially other than the Nuclear PROTECTION PLAN signincant unreviewed Regulatory Commission are l

STATUS environmental question. A reported in accordance with the proposed change, test or applicable reporting The Environmental Protection experiment is deemed to involve requirements. The Nuclear l

' Plan was issued in March of an unreviewed environmental Regulatory Commission is 1989 to provide for the question ifit concerns: (1) a provided with a copy of such protection of nonradiological matter that may result in a reports at the same time it is

. environmental values during significant increase in any submitted to the cognizant operation of the South Texas adverse environmental impact agency. Reports of this type Project. This section reviews previously evaluated in the Final submitted in 1997 by the South Environmental Protection Plan Environmental Statement related Texas Project are discussed in noncompliance identi0ed by the to the Operation of South Texas previous sections of this chapter.

I plant and associated corrective Project, Units 1 and 2 (Docket If a nonroutine event occurs and actions to prevent recurrence.

Nos. 50-498 and 50-499),

a report is not required by Potential nonconformities are environmental impw t appraisals, another agency, then a 30-day promptly addressed when r in any decisiors o'the Atomic report to the Nuclear Regulatory identiGed to maintain operations Safety and Licen 6g Board; or Commission is required by the in an environmentally acceptable (2) a significam change in Environmental Protection Plan.

manner. The station's Corrective ef0uents or power level; or (3) a No 30-day or other non routine Action Program is used to matter not previously reviewed reports of this type were required document these conditions and and evaluated in the documents for the Nuclear Regulatory track corrective actions to specified in (1) above, that may Commission in 1997, completion. In addition, internal have a significant adverse assessments, reviews, and environmentalimpact. No inspections conducted in 1997 unreviewed environmental document plant compliance.

questions were identified in This section also reviews 1997-nonroutine reports submitted by Events that require reports to

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l

. Many other sample types and locations are given which have been used for samples that have been taken l,

for informational purposes.

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l 199'7 ENVIRONMENTAL REPORT c-_-_-_--_----_

_ _ - _ _ _ _ _ - _ _ _ _ _ _ _ _ _ = _ _ _

A o o s s o u s o.r T A B L E S q

TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS Al AIR. BORNE RADIOlODINE ML (MIXED LIQUID) AERATION TANK AL ALGAE ml (WATER PORTION OF ML)

AP AIRBORNE PARTICULATE MI BEEF MEAT AS (ASil SLUDGE) ASil TANK M2~

POULTRY MEAT as

'(WATER PORTION OF AS)

M3 WILD SWINE

-BE WILD BLACKBERRIES M4 DOMESTIC SWINE B1 RESIDENT DABBLER DUCK MS EGGS B2 RESIDENT DIVER DUCK M6 GAME DEER B3 MIGRATORY DABBLER DUCK M7 ALLIGATOR B4 MIGRATORY DIVER DUCK M8 RABBIT B5 GOOSE NI PECANS B6 DOVE N2 ACORNS B7 QUAll OY OYSTER B8 PIGEON PK PLANKTON CC CRUSTACEAN CRAB RA ROOTED AQUATIC VEGETATION CS CRUSTACEAN SilRIMP R4 TURNIP Cl CRAB SilELL -

SB SOYBEAN 1

DR-DIRECT RADIATION SO SOIL FD FOOD St SEDIMENT - Sl!ORELINE FM FECAL MATERIAL S2 SEDIMENT - BOTTOM F1 FIS11 - PISCIVOROUS UR URINE F2 FISil-CRUSTACEAN & INSECT VB BROADLEAF VEGETATION i

l FEEDERS F3 FISil-PLANTIVORES & DETRITUS VC CORN FEEDERS Li BANANA LEAVES VP PASTURE GRAS?

L2 CANA LEAVES VR RICE

= 1,3 LETTUCE VS GRAIN SORGilLM L4 TURNIP GREENS WD DRINKING WATER h

L5 CABBAGE WG GROUND WATER L6 COLLARD GREENS WR RAIN WATER.

MC COW MILK WS SURFACE WATER MG' GOAT MILK -

WW RELIEF WiiLL WATER

TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS MEDIA CODE STATION VECTOR LOCATION DESCRIPTION i.

CODE (Approximate)

DR Al AP VB VP SO 001 1 mile N FM 521 DR 002 1 mile NNE FM521 DR 003 1 mile NE FM521 DR 004 1 mile ENE FM 521 DR 005 1 mile ESE STP Visitor Center on FM 521 DR Al AP SO 006 3.5 miles ESE Site near reservoir makeup pumping facility DR 007 3.5 miles SE MCR Dike i

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 FM521 DR AI AP VB SO VP 015 1 mile NW FM 521 DR Al AP VB SO VP 016 1 mile NNW FM521 DR 017 6.5 miles N Buckeye - FM 1468 j,

DR Al 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 r

DR 021 5 miles E FM 521& FM 2668 I

' C D MCR - STP Main Cooling Reservoir Media codes typed in bold satisfy collection requirement described in Table 1

• Control Station 1997 ENVIRONMENTAL REPORT l

ADDENDUMOFIABLES TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS MEDIA CODE STATION VECTOR I OCATION DESCRIPTION CODE (Approximate)

DR 022 7 miles E Equistar Chemical Plant DR

• 023 16 miles ENE Intersection of FM 521 and FM 2540 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 Al 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 DR Al AP SO 039 9 miles NW TX 35 under liigh Voltage Power lines near Tidehaven liigh School DR 040 4.5 miles SW Citrus Grove DR 041 2.0 miles ESE MCR Dike GD MCR - STP Main Cooling Reservoir Media codes typed in bold satisfy collection requirement described in Table 1

• Control Station

TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS MEDI A CODE STATION VECTOR LOCATION DESCRIPTION CODE (Approximate)

DR 04.2 8.5 miles NW FM 459 at Tidehaven Intermediate School WG 205 4 miles SE Well #446A,0.5 mile north of MCR l

blowdown canal (30' deep) 1 WG 206 4 miles SE Well #446,0.5 mile nonh of MCR blowdown canal (75' deep)

WG

• 207 1.5 miles W Well #603A,0.25 mile west of TX 521 (75' i

deep)

WG

• 208 1.5 miles W Well #603B,0.25 mile west of TX $21 (150' deep)

WS 209 2 miles ESE Kelly Lake WD 210 On Site Approved drinking water supply from STP WSS1 211 3.5 miles S Site, E. Branch Little Robbins Slough WSSi 212 4 miles S Little Robbins Slough WSSi 213 4 miles SE W. Dranch Colorado River j.

F (1,2, or 3) CC 214 2.5 miles SE MCR at Makeup Water Discharge F(1,2, or 3) S2 215 0.5 mile SW MCR at Circulating Water Discharge l

F(1,2, or 3) WS S2 216 3.5 miles SSE MCR at blowdown structure F (1,2, or 3) CC CS OY 222 10.5 miles S West Matagorda Bay F (I,2, or 3) 223 10.5 miles SE East Matagorda Bay P*

F (1,2, or 3) 224 9.2 miles SSE West Intracoastal Canal C D MCR - STP Main Cooling Reservoir Media codes typed in bold satisfy collection requirement described in Table 1

• Control Station 1997 E N VI R O N M E N TA L REPORT

ADDENDUMOFIABLES TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS MEDI A CODE STATION VECTOR LOCATION DESCRIPTION

~

CODE (Approximate) 1 F (1,2. or 3) 225 9.2 miles SE East Intracoastal Canal

)

WS

• 226 4.5 miles NNE Colorado River at Celanese Plant WS S(1 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 WSS1 229 2-3 miles ESE Drainage ditch north of the reservoir that emptics into Colorado River upstream of the reservoir makeup pumping facility S(1 or 2) 230 3.5 miles ESE Colorado River at point where drainage ditch

(#229) empties into it SO 232 9 miles NW Farmland behind station #39 S(1 or 2) WS 233 4.5 miles SE Colorado River where MCR blowdown discharge channel empties into it.

SO 234-I mile NW Farm across FM521 from station #15 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 WG

• 239 I mile NW Well B-1B. Near REMP sampling station #15 WS SO S1 240 i mile ESE Drainage ditch originating NE of protected area that crosses liwy 521 south of main entrance road and emptics into Kelly Lake.

4 D MCR - STP Main Cooling Reservoir Media codes typed in bold satisfy collection requirement described in Table 1

• Control Station

TABLE 2 SAMPLE MEDIA AND LOCATION DESCRIPTIONS MEDIA CODE STATION VECTOg L.OCATION DESCRIPTION j

CODE (Approximate) 1 F (1,2, or 3) 241

<l mile S MCR circulating water intake S(1 or 2) WS

• 242 14 miles N Colorado River where it intersects liighway 35 WS

• 243 14 miles N Colorado River upstream of Bay City Dam at the LCRA pumpmg station 1

WG 245 4.5 miles SSE Water well (approx. 60' deep) located on private property 1 mile south of MCR resen'oir WSSi 246

< 1 mile N Drainage ditch originating at protected area fence north of Unit 2 WS 247

<l mile E Essential Cooling Pond StWS.

248

<1 mile N Point in drainage ditch north of protected area downstream of Unit #1 Protected Area storm drains discharge F(1,2, or 3)

• 249 N/A Control sample purchased from a local retailer WW 701 4 miles S MCR Relief Well # 440 WW 702 4 miles S MCR Relief Well # 500 WW 703 4 miles S MCR Relief Well # 505 WW 704 4 miles S MCR Relief Well # 497

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4 D MCR - STP Main Cooling Reservoir Mcdia codes typed in bold satisfy collection requirement described in Table 1

• Control Station 1997 ENVIR N M E NTA L REPORT

ADDENDUMOFIABLES l

1997 Radiological Environmental Monitoring Program Analysis Summary An analysis summary for all of the required samples is given in Table 3. The table has been formatted to resemble a United States Nuclear Regulatory Commission industry standard. Modifications have been made for the sole purpose of reading case. Negative values are reported in this table as recommended by the United States Nuclear Regulatory Commission. Reported negative values are required to do long tenn studies where the true values are near zero or when there exists a negative bias in the measurement.

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 activity or specific radionuclides for which each sample was analyzed. Total analyses perfonned for the indicated nuclide/ the total number of nonroutine samples analyzed is given in the second column. (A nonroutine measurement is a sample indicating a value greater than the reporting levels for Radioactivity Concentrations in Environmental Samples.) The " LOWER LIMIT OF DETECTION" column lists required values. Not all of the listed analyses or radionuclides have required lower limits of detection. Typically, the values achieved are significantly lower than the required.

A set of statistical parameters are listed for each radionuclides in the remaining columns. The parameters contain information from the indicator locations, the location having the highest annual mean, and information from the control stations. For each of these groups of data, the following is calculated:

D The mean value (including negative values and values below the lower limit of detection).

4 The number of analyses whose values were greater than the lower limit of detection / the total number of analyses.

D The lowest and highest values for the analysis.

The data placed in the table was changed in 1995 from the previous reports to only include the data from the samples listed in Table 1. Additional thermoluminescent dosimetry is utilized each quarter for quality control purposes. The number of analyses will be the same as required with the addition of three groundwater duplicate samples, four bottom sediment samples plus one split sample, one drinking water duplicate sample and ten duplicate surface water samples. Vegetation and wildlife samples vary in number according to availability.

This change in the data may appear to cause some inconsistencies between current and past data but will provide for more consistency in the future.

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Bitt Cetite, f]tesident and Chief Lecutice Otticer, SQ/) /lfucteat Operating Company

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