ML19269C280
| ML19269C280 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 01/26/1979 |
| From: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7901310041 | |
| Download: ML19269C280 (9) | |
Text
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<r2 January 26, 1979 Trojan Nuclear Plant Docket 50-344 License NPF-1 Director of Nuclear Reactor Regulation ATTN:
Mr. A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors U. S. Nuclear Regulatory CoLrission Washington, D. C.
20555
Dear Sir:
The Trojan Nonradiological Environmental Monitoring Program was established in 1974 to ensure operation did not impc<t c; cal environs.
Operational data has been collected and analyzed since Dec. ember 1975. Our program has collected considerable dato beyond the requirements of the Environmental Technical Specifications, Appendix B ot' Facility Operating License NPF-1.
r Since the beginning of this program, no nonradiological environmental impacts have been observed. As a result, two actions are planned for 1979:
- 1) the Trojan Nonradiological Environtental Monitoring Program will be modified by eliminating activities which have been previously performed in excess of Technical Specification requirements (effective January 1, 1979), and 2) a License Change Application will be submitted to eliminate the nonradiological environmental surveillance,which is felt to no longer contribute to an evaluation of the environmental impact of the Trojan Nuclear Plant.
Although these modificatione to the Tiujan Nonradiological Environmental Monitaring Program in excess of the requirements of the Environmental Technical Specifications can be made within the restraints of our Facility Operating License, we f eel that you should be inf ormed.
We have attached a tabulation of the Trojan 1979 Nonradiological Environ-mental Monitoring Program (Attachment 1) which shows the moni:oring perf ormed in 1978 and the monitoring that will be perf ormed in 1979. summarizes the modifications made to the program. As you can see, many aspects of the program remain unchanged and in all cases the requirements of the Technical Specifications will be met.
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Portland General ElectiicCanparry Mr. A. Schwencer January.26, 1979 Page two If you have questions on this matter, please do not hesitate to contact me.
Sincerely,
(
C. Goodwin, Jr.
Assistant Vice President Thermal Plant Operation and Maintenance CG/CAZ/4crw3A15 Attachments c:
Dr. W. K. Woods, Acting Director w/ attach State of Oregon Department of Energy
TROJAN 1979 NONRADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM As Required By Present Proposed 1979 Program Technical Specifications Monitoring Program Monitorine Procram AQUATIC Thermal Discharge Mixing zone mapped first During Representative No Change Mapping year commercial operation flow conditions under representative flow conditions Columbia River Monthly on 2 transects and Monthly on 2 transects No Change Chemical in mixing zone plus '2 additional stations and in mixing zone Fish Behavior Survey mixing zone Survey mixing zone No Change bi-monthly bi-monthly Columbia River -
Monthly Samples.
Monthly Samples.
No Change Phytoplankton, Zoo-Phytoplankton 3 transects.
Phytoplankton 3 plankton Zooplankton 2 transects transects. Zooplankton and in mixing zone 2 transects and mixing zone Fish Impingement Cathered daily, examined Gathered and examined No Change monthly except April, May,
- daily, and June when examined weekly.
Cooling Water Intake Monthly for icthyoplankton Monthly zooplankton.
Monthly zooplankton, and Heated Discharge (fish eggs, larval fish),
Monthly phytoplankton.
Monthly icthyoplankton zooplankton Monthly icthyoplankton except March to except March to September bi-weekly.
September bi-weekly.
Live Car Drift Monthly first year February. April, May, February, May, August, operation and seasonally September, October, October for second November, December
Page Two
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As Required By Present Proposed 1970 Program Technical Specifications Monitoring Program Monitoring Progrn-Toxicity Bioassay Monthly first year February, March, April, February, May, August, operation and seasonally June, July, September, October for second October, November, December Ucer Creek / recreation No frequency given Monthly Zooplankton, and Water lake - Phytoplankton, chemistry, January, April, July, September Zooplankton, Water October. Phytoplankton -
Chemistry April, July, September, October.
Recreation Lake -
Twice to determine June, Septenber No Change Gillneting species composition and abundance.
Recreation Lake -
Monthly Monthly No Change Periphyton Columbia River -
Not required January, April, July, Discontinue Metals October for Boron, Calcium, Hexavalent Chrom., Magnesium, Sodium, Zine Intake Currents Not required June Discontinue Benthic Invertebrate Not required January, April, Discontinue July, October Neer Creek - Periphyton Not required Monthly Discontinue
Page Threc As Required By Present Proposed 1979 Program Technical Specifications Monitoring Program Monitoring Program _
TERRESTRIAL Forest Plots -
Three plots Six plots Four plots Species Composition No frequency given Annually Annually Relative Abundance Leaf Litter Three plots Six plots Four plots Seasonally Monthly Monthly July thru December Salt Drift -
Monthly Monthly No Change Precipitation Collectors Salt Drift -
Appropriate locations Six plots Four plots Live Leaves Seasonally May, July, Sept.,
May, July, September October Bird Census At least three/ year Five - January, April, Four - January, May, Additional observations May, August, September June, September, during vegetation and Two control transects and field activities. No all meadow habitat areas specified.
transects discontinued.
Bird Kill Monthly survey during Monthly No Change first year operation.
Small Mammal -
Trapping 3 times during April, August, November, April, August, November, Trapping first year operation on on 6 plots on 4 plots 2 plots Small Mammal -
No number or frequ2ncy Twice annually Annually Stomach Analysis given
Page Four As Required By Present Proposed 1979 Program Technical Specifications Monitoring Program Monitorine Program Large Mammal No frequency given Five - January, April, Four - January, May, May, August, September, June, Septembet, c r.me concurrent with bird as bird census.
census.
Reptile, Amphibian Seasonal from Neer Creek Monthly on 8 transects Monthly on 3 transects recreation lake, marshes, in meadow areas tierbicide Following application Following applications No Change Accumulation AERIAL Black and white Black and white No Change summer and winter.
summer and winter.
Color and color infrared Color and color infrared summer winter
A TROJAN NONRADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM FOR 1979 Aquatic Program 1.
Modification:
Discontinue monthly sampling of cooling water intake and heated discharge for phytoplankton.
Rationale:
There have been no detectable consistent changes in phytoplankton densities among sampling stations from 1974 to 1977 ( Annual Reports PGE-1009).
2.
Modification: Toxicity bioassay and live car drifts will be reduced f rom seven times per year to seasonally.
Rationale:
No effluent impacts have been shown.
3.
Modification: honitoring of boron, calcium, magnesium, sodium, zinc and chromium in the Columbia River will be dropped.
Rationale:
Many of the metals were below the 0.1 mg/l detection level or showed neither cross-river nor downstream differences.
Amounts of boron and sodium discharged are monitored and controlled under the NPDES permit.
Zinc and chromium are not used in plant operations as corrosion inhibitors.
4.
Modification:
Measurement of intake currents in front of the intake structure will be discontinued.
Rationale:
Current velocities were either equal to or less than predicted.
Since no design or operational changes are planned, intake velocities will remain in the same range.
5.
Modification:
h litoring Neer Creek and Recreation Lake for plank-tc and water chemistry will be reduced from monthly to five samples per year and benthic invertebrate monitoring will be discontinued.
Rationale:
This element of the program was to assess the suit-ability of the water for recreational purposes.
Den-sities and composition of the biota have been well documented (Annual Reports PGE-1009) and further studies would not add significantly to the data base.
6.
Modification:
Monitoring of periphyton in Neer Creek will be te rmina t e d.
4 O
e Rationale:
Densities and composition of the periphyton have been documented (Annual Reports PGE-1009). Neer Creek above the lake indicates a forest ecosystem, the stream below reflects the eutrophic conditions of the lake. The lake periphyton are similar among stations, but not with Neer Creek periphyton.
Fur the r studies will not increase our usef ul information.
Terrestrial Program 1.
Modif ic a t ion : Drop one of two control forest study plots.
Rationale:
This plot contains vegetation different from the experimental plots and is therefore not an effec-tive control.
2.
Modification: Leaf litter will be collected f rom July through December instead of monthly.
Rationale:
Most of the leaf litter occurs at this time and this covers the period from which conclusions are drawn.
3.
Modification: Live leaf chemical composition is currently analyzed from six plots in May, July, September and October.
Rationale:
One of the plots to be dropped is the control area mentioned in (1) above.
The other is a duplicate forest plot that adds little extra information.
In October there are often no live leaves to collect.
4.
Modification: Avifauna census periods will be January, May, June and September instead of January, April, May, August and September. Two control transects and all meadow habitat transects will be discontinued.
Rationale:
The two control transects were replaced by more appropriate control transects in 1976 but were never dropped. All meadow habitat transects are small and dominated by different surrounding habitats.
The April census was too early to adequately evalu-ate nigrants and the June census was chosen to cover the beginning of nesting season.
5.
Modification: The small mammal live trapping will be revised by dropping one Trojan mixed forest trapline and one control meadow trapline.
Rationale:
The Trojan mixed fores t transect habitat has been degraded by herbicide treatment for poison oak con-trol.
This transect adds little information beyond other established (nearby) transects.
The control meadow trapline is small and dominated by surround-ing different habitats.
6.
Modification: Snall mammal stomach analysis currently done twice a year will be done once a year.
Rationale:
The results have been too variable to draw conclusions.
It is some times dif f icult to collect sufficient numbers of animals.
Th is program element puts undue stress on mouse populations.
7.
Modification:
Pit trapping of reptiles, amphibians and small mammals will be discontinued on five of eight transects.
Rationale:
These transects were particularly harmf ul to small mammal populations and do not add much inf ormation beyond the one control and two experimental transects which will be monitored.
These modifications will be made on program elements which have indicated no impact from plant operation and are in excess of Environmental Technical Specification requirements. We feel these modifications are justified and the subsequent program will enable detection of any future significant environmental impacts.
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