ML20029C988
| ML20029C988 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 12/31/1993 |
| From: | William Cahill, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-94124, NUDOCS 9405030174 | |
| Download: ML20029C988 (14) | |
Text
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-- Log # TXX-94124
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File # 234 h
225
TUELECTRIC l April 29, 1994
. William J. Cahllt. Jr.
Group Vice Pre & lent U. S. Nuclear Regulatory Commission Attn: Document Control Room Washington, DC 20555
SUBJECT:
COMANCHE PEAK STFA+ ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 ENVIRONMENTAL PROTECTION PLAN
) ANNUAL ENVIR0hMENTAL OPERATING REPORT FOR 1993 Gentlemen:
Pursuant to Section 5.4.1 of the Environmental Protection Plan (Appendix B to CPSES Unit 1 and Unit 2 Facility Operating License Nos. NPF-87 and NPF-89, respectively), TU Electric hereby submits the CPSES 1993 Annual Environmental Operating Report in the attachment to this letter.
If you have any questions, please contact Richard S. Berk at (214) 812-8952 Sincerely, w % p 4fA>b William J. Cahill, Jr.
By:
R. D. Walker Regulatory Affairs Manager RSB/ -
Attachment c- Mr. L. J. Callan, Region IV (clo)
Resident Inspectors, CPSES (2 clo)
Mr. T. A. Bergman, NRR (clo) 020077 i
9405030174 931231 5 DR ADOCK 0500 uo N.otive street LB. si Dattes, Texas 75201 I- I
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- I TU ELECTRIC COMANCHE PEAK STEAM ELECTRIC STATION UNITS 1 & 2 ANNUAL ENVIRONMENTAL OPERATING REPORT (NONRADIOLOGICAL)
FACILITY OPERATING LICENSE NOS. NPF-87 & 89 i
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f Attachment to TXX-94124 Page 2 of 13 i
I. INTRODUCTION This report describes implementation of the Environmental Protection Plan (EPP) for the calendar year 1993 as required by Appendix B to Facility Operating License NPF-87 & 89 for Units 1 & 2.
During 1993, Comanche Peak Steam Electric Station (CPSES) made significant environmental protection acnievements and was successful in complying with all environmental monitoring commitments. Some of the more noteworthy achievements included: (1) there were no wastewater discharge permit violations, (2) there wero no air permit violations, (3) completed closure of last remaining on-site active Class II landfill, (4) completed Landfills 1, 2, 4, & 5 closure in accordance with Texas Natural Resource Conservation Commission (TNRCC) approved closure plans, (5) completed and implemented the CPSES Stormwater Pollution Prevention Plan (SWPPP) to minimize pollution of stormwater runoff, (6) completed the development of the CPSES Source Reduction / Waste Minimization Plan (SR/WM) that will be implemented in 1994 for reducing hazardous waste generation, (7) completed construction and initiated operation of all components of the new Wastewater Management System (WMS).-for processing Low Volume Wastewater, (8) completed closure of the Construction Flush Water Settling Pond (Outfall 401), (9) initiated a demonstration project under Section 316(b) of the Clean Water Act to assess the impact of the circulating water intake structure on aquatic biota with two unit operation.
In addition to the above, significant progress was made . in 1993 toward improving CPSES' Mixed Waste Program. CPSES has taken measures to become a storer of Mixed Waste by applying for applicable Resource Conservation & Recovery Act (RCRA)
Permits. Also, the CPSES Chemical Overview Group (COG) was formed during 1993. This group's-charter is to evaluate and-control the use of all chemicals /consumables on-site.
Environmental is an integral component of this group and the COG will be instrumental in minimizing the generation of Mixed' Waste, as well as nonradioactive hazardous waste.
II. SCOPE Section 5.4.1 of the EPP requires that CPSES submit to the NRC an Annual Environmental Operating Report that shall address the following. environmental protection activities:
A. Summaries and analyses of the results of the
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Attachment to TXX-94124 Page 3 of 13 environmental protection-activities required by Section 4.2 of the EPP, including a comparison with related preoperational studies, operational controls (as appropriate) , and previous nonradiological environmental
, monitoring reports, and an assessment of the observed impacts of plant operation on the environment. If harmful effects or evidence of trends toward irreversible-damage to the environment are observed,. a detailed analysis of the data and a proposed. course of mitigating action is required. Section 4.2 of the EPP pertains to results from:
- 1. Groundwater levels and station water use monitoring.
- 2. Water treatment facility outages impact assessment and reporting.
B. The report shall also include:
- 1. A list of EPP noncompliance and the corrective I actions taken to remedy them.
- 2. A list of all changes in station design -and ,
operation, tests, and experiments made in accordance with Subsection - 3.1 of the EPP which 1 involved a potentially significant unreviewed l environmental question.
- 3. A list of nonroutine reports submitted in accordance with Subsection 5.4.2 of the EPP.
- 4. A summary list of National . Pollutant Discharge Elimination System (NPDES) permit-related' reports
- relative to matters identified in Subsection 2.1 of
! the EPP which were sent to the EPA Region VI during I
the report period. Subsection 2.1 of the EPP pertains to aquatic matters that are addressed by the effluent limitations, monitoring requirements and the Section 316(b) demonstration requirement (effects of intake structure on aquatic. biota during operation) contained .in -the- EPA NPDES station wastewater discharge permit.
III. RESULTS OF ACTIVITIES A. As required by Subsection 4.2 of the EPP, the following are summaries and analyses of the results of the
b Attachment to TXX-94124 Page 4 of 13 environmental protection activities during 1993. Based on these activities, there were no observed environmental impacts resulting from plant operation during 1993.
- 1. Groundwater Pumpage As indicated in Table 1, groundwater pumpage during 1993 averaged 28.5 gals./ min. (gpm) or 15,139,100 total gallons withdrawn for the year. This withdrawal rate represents a 14% decrease from the 1992 average rate of 33.2 gpm.
Average monthly withdrawal rates fluctuated from a low of 13.0 gpm in January to a high of 39.4 gpm in July, then gradually decreased to 21.6 gpm in December.
All groundwater withdrawn during 1993 was used for potable and sanitary purposes only and no groundwater was used to supplement the station's Surface Water Treatment System. Also, there was no treated surface water used to supplement the potable water system. In fact, CPSES has physically eliminated surface water as a potable water source due to heightened regulatory .
restrictions on surface waters used for potable water supplies, as well as plant operational considerations.
The average annual pumpage rate of 28.5 gpm for 1993 represents.22% of the predicted operational pumpage (127 gpm) identified in Section 3.3 of the Station's Environmental Report-Operational License Stage. This rate also represents approximately 18%
of'the actual average withdrawal rate f(158 gpm) reported in the Station's Final Environmental-Statement-operating Licensing Stage (Section 5.3.1.2) for the period 1975 to May 1979.
The combined annual rate for all recorded preoperational groundwater pumpage averaged 68.8 gpm, while the average operational pumpage for the period 1990 through 1993 was 30.5 gpm. Therefore, the average operational rates were 56% less than the groundwater pumpage during the preoperational period. Figure 1 illustrates the annual fluctuation of groundwater withdrawal over the entire preoperational and operational period.
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Attachment to TXX-94124 Page 5 of 13
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- 2. Groundwater Levels As indicated in Table 2, the groundwater level in the on-site observation well OB-3 (entrance to i Plant Access Road) fluctuated during 1993 from a high level in April of 542.2 ft. MSL to a low level in September of 530.6 ft. MSL. Overall the water level in OB-3 during the reporting period (January through December) decreased 4.5 ft. (1.37m).
The groundwater level in observation .well OB-4 (Squaw Creek Park) fluctuated during 1993 from a high level in April of 583.4 ft. MSL to a low level in November of 576.7 ft. MSL. Overall, the water level in OB-4 during the reporting period decreased 4.8 ft. (1.46m). As noted in Table 2, January's level reading was not used for tabulating data for 0B-4. This reading was suspect due to the extreme water level increase (11.6 ft.) then decrease (10.3 ft.) it reflected from December 1992 to February 1993.
The 1993 annual average groundwater levels in wells OB-3 and OB-4 were 537.1 f t. MSL and 580.3 f t. MSL, respectively. These average levels demonstrated a-decline of 5.3 ft. (1.62 m) for OB-3 and 3.8 ft.
(1.16 m) for OB-4 from the respective average 1992-levels (Figure 2). However, groundwater pumpage actually decreased from an annual average of 33.2 gpm in 1992 to 28.5 gpm in 1993. Consequently,-it appears the decline in annual average water levels between the two reporting periods is_-attributable .
For instance, -precipitation !
to other factors.
during 1993 was 31.6 inches compared to 40.6 inches-in 1992 (22% decrease). Another factor that may have influenced this decline in water levels, is-the additional industrial and- recreational facilities constructed _in the nearby City of Glen-Rose that- began operation in 1992 (e.g. Squaw Valley Golf Course, Somervell County Exposition-Center, expansion of Somervell County Hospital, ,
construction of a new Nursing Home).
' Precipitation data as recorded in official records maintained for the U. S. Weather Service by a' local observer located in Glen Rose, Texas (Somervell County) .
.: e . - . . .. _ ._ . . . _ _ _ _ _ . . _ .
Attachment to.TXX-94124 Page 6 of 13
- 3. Surface Water Treate.ent System Operation The station's Water Treatment System processed
.169,632,000 total gallons (323 gpm) of surface-water during 1993 for plant process use. There were no outages during 1993 that required reporting in accordance with Section 4.2.2 of the EPP.
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Attachment to TXX-94124 Page 7 of 13 The following is a summary list of monthly surface water usage.
MONTH SURFACE WATER PROCESSED, GALS.
JANUARY 3,010,900 _
FEBRUARY 1,858,400 MARCl! 23,324,020 APRIL 18,407,880 MAY 16,002,000 JUNE 13,991,500 JULY 17,976,300 AUGUST 14,529,100 SEPTEMBER 19,265,500-OCTOBER 21,398,800 NOVEMBER 1,837,400 DECEMBER 18,(30,900 ,
TOTAL 169,632,000 ,
B. EPP Noncompliance and Corrective Actions-subsection
- 5. 4.1 (1)
There were no noncompliances with the requirements of the EPP during the reporting period.
C. Changes In Station Design or Operation, Tests, and Experiments Made in Accordance With Subsection 3.1 Which Involved a Potentially Significant- Unreviewed Environmental Question There were no changes in station design or operation,. nor tests or experiments conducted during the ' reporting -
period that are reportable under this subsection.- ,
D. Nonroutine Reports Submitted In Accordance With Subsection.5.4.2 There were no nonroutine reports submitted under this Subsection.
Attachment to TXX-94124 Page 8 of 13 E. NPDES Permit-Related Reports Relative To Matters Identified In Subsection 2.1 Routine monthly Discharge Monitoring Reports (DMR) for all wastewater outfalls were submitted to the EPA and TMRCC for each month during 1993. The following is a summary list of correspondence submitted to the EPA relating to these DMRs.
MONTH MONITORED LOG NUMBER /DATE JANUARY TXX-93115/ 02-25-93 3 FEBRUARY TXX-93145/ 03-25-93 MARCH TXX-931193/ 04-23-93*
APRIL TXX-931193/ 05-25-93*
MAY TXX-93253/ 06-25-93 JUNE TXX-93275/ 07-23-93 JULY TXX-93314/ 08-25-93 AUGUST TXX-93329/ 09-24-93 SEPTEMBER TXX-93371/ 10-25'93 OCTOBER TXX-93405/ 11-24-93 -
NOVEMBER TXX-93425/ 12-20-93 DECEMBER TXX-94025/ 01-25-94
- Correspondence numbers were inadvertently duplicated.
There were no wastewater discharge permit violations.in 1993. This represents a significant reduction from the six violations that occurred in 1992.
Two on-site spills occurred during ~1993 that required notification to the TNRCC within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The National Response Center was also notified of the spills. .These incidents were verbally reported to the NRC.
The two notifications were made to report petroleum releases at the on-site Fuel Island. The first release (gasoline and diesel) was discovered on August 25,- 1993 i
Attachment to TXX-94124 Page 9 of 13 and contractors were hired to assess the nature and extent of this release. Remediation of all petroleum contaminated soil is on-going and is expected to be complete in May 1994. Contaminated soil is being thermally treated to less than 200 ppm total petroleum hydrocarbons. The remediation criteria being employed is in accordance with the TNRCC Risk Reduction Rules Subchapter S Clean-up Criteria No. 2 for each constituent of Benzene,-Toluene, Ethylbenzene, and Xylene (BTEX). A temporary fuel dispensing facility was established pending completion of remediation activities and construction of a new permanent fuel dispensing facility.
The second reportable release occurred on November 22, 1993 at the temporary fuel dispens1.g " facility when 37 gallons of gasoline was released from a failed pipe union. All contaminated soil associated with this release was removed and will be thermally treated.
As previously indicated, a monitoring program was initiated in 1993 to assess the impingement and entrainment impact of the circulating water intake structure on aquatic biota. This program is being implemented under the provisions of Section 316(b) of the Clean Water Act. The Final Environmental Statement Related To The Operation Of CPSES Units 1 and 2 required that this program be initiated after Unit 2 Operating License. The 316 (b) study was initiated in October 1993 and the sampling program will continue for one year.
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Attachment to TXX-94124 .
Page 10 of 13 r
TABLE 1
SUMMARY
OF GROUNDWATER PUMPAGE For 1993 PLANT WELL 1 PLANT WELL 2 NOSF WELL 1 NOSF WELL 2 TOTALS NO. OF MOitTH DAYS TOTAL AVG. TOTAL AVG. TOTAL AVG. TOTAL AVG. TOTAL AVG. BETWEEN READINGS Gals. Gals. Gals. Gals. Gals. Gals. Gals. Gals. Gals. Gals.
Per Per Per Per Per Min. Min. Min. Min. Min.
January 493,800 9.80 30,000 0.60 60,200 1.19 68,700 1.36 652,700 12.95 35 February 477,600 11.S5 0 0.00 55,300 1.37 76,300 1.89 609,200 15.11 28 s March 645,800 14.47 18,000 -0.4G 52,700 1.18 80,1000 1.79 796,600 17.84 31 April 631,100 13.70 627,900 13.63 60,600 1.32 74,600 1.62 1,394,200 30.26 32 May 674,700 16.16 725,300 17.37 62,300 1.49 60,800 1.46 1,523,100 36.47 29 June 581,000 13.45 702,200 16.25 99,800 2.31 110,500 2.56 1,493,500 34.57 30 July' 634,000 13.76 870,400 18.89 129,000 '2.80 180,400 3.91 1,813,800 39.36 32 August 463,100 10.72 849,000 19.65 163,500 3.78 144,700 3.35 1,620,300 37.51 30-Sept. '160,500 3.72 1,183,000 27.38 165,300 3.83 156,500 3.62 1,665,300 38.55 30 October 825,500 18.49 356,200 7.98 97,200 2.18 117,100 2.62 1,396,030 31.27 31-November 1,108,600 24.83 0 0.00 63,100 1.41 68,700 1.54 -1,240.400 27.79 31 December 835,000 19.33 0 0.00 49,100 1.14 49,900 1.16 934,000 21.62 30 ,
TOTAL 7,530,700 14.17 5,362,000 10.09 1,058,100 1.99 1,188,300 2.24 15,139,100 28.49 369
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I TABLE 2 1993
SUMMARY
OF GROUNDWATER 1
LEVELS IN OBSERVATION WELLS MONTH WELL OB-3 WELL OB-4 (G-3) (G-4)
E DEPTH (1) MSL (2) DEPTH (1) MSL (2)
JANUARY 253.8 540.0 258.1 (4) 592.7(4)
FEBRUARY 253.2 540.3 268.4 582.4 MARCH 252.4 541.4 267.6 583.2 APRIL 251.6 542.2 -267.4 583.4 MAY (3) 251.8 542.0 267.5 583.3 JUNE (3) 255.4 538.4 269.8 581.0 JULY (3) 257.4 536.4 270.2 580.6 AUGUST (3) 260.3 533.5 271.9 578.9 SEPTEMBER (3) 263.2 530.6 272.1 578.7 OCTOBER (3) 262.8 531.0 273.3 577~5.
_NOVEMDER (3) 260.1 533.7 274.1 576.7 DECEMBER (3) 258.3 535.5 273.2 577.6 ,
ANNUAL GROUNDWATER LEVEL CHANGE FOR 1993:
Well 0B-3: 253.8 ft. - 258.3 ft. =
(-) 4.5 ft. =
(-) 1.4 m (Decline) ,
Well 08-4: 268.4 ft. - 273.2 ft. =
(-) 4.8 ft. = (-) 1.5 m (Decline)
NOTES:
(1) Depth to water table (ft.).
-(2) Water table elevation (ft.).
(3) Levels represent - average levels based on weekly readings taken when previous month pumpage excersds 30 gpm.
(4) This data point is suspect and was not used for tabulating level change or annual average level for well 08-4. December 1992 level reading for OB-4 ,
was 269.7 ft. (581.1 ft., MSL).
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FIGURE 1
SUMMARY
OF GROUNDWATER PUMPAGE
-1975 THRO. UGH 1993.(GPM). .
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