ML20083N071
| ML20083N071 | |
| Person / Time | |
|---|---|
| Site: | Washington Public Power Supply System |
| Issue date: | 01/25/1983 |
| From: | Bouchey G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| GO1-83-0032, GO1-83-32, NUDOCS 8302010548 | |
| Download: ML20083N071 (8) | |
Text
Washington Public Power Supply System P.O. Box 968 3000 GeorgeWashingtonWay Richland, Washington 99352 (509)372-5000 Docket No. 50-460 Janaury 25, 1983 G01-83-0032 Office of the Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Document Control Desk
Subject:
SUPPLY SYSTEM NUCLEAR PROJECT N0. 1 ENVIRONMENTAL REPORT - OPERATING LICENSE STAGE RESPONSES TO NRC ACCEPTANCE REVIEW QUESTIONS
References:
- 1) Letter, D. G. Eisenhut (NRC), to R. L. Ferguson (Supply System), dated July 16, 1982
- 2) Letter, D. G. Eisenhut (NRC) to Reactor Licensee, Holders of Construction Permits and Applicants,
" Submittal of Documents to the Nuclear Regulatory Commission", dated August 9, 1982 A request for additional information relative to the WNP-1 Environmental Report-Operating License Stage was transmitted as Enclosure 2 to Reference 1.
In accordance with Reference 2, forty (40) copies of our responses are attached.
If you require additional information or clarification, please contact J. P. Chasse, (509/372-5569).
Very truly yours,
/
G. D. Bouchey, Man ger Nuclear Safety & Regulatory Programs y)
JPC/sm
Attachment:
Question Responses cc; MC Thadani - NRC CR Bryant - BPA 399 8302010548 830125 PDR ADOCK 05000 E
M G
8 9
ATTACHMENT RESPONSES TO NRC OL ACCEPTANCE REVIEW QUESTIONS OF JULY 16, 1982 (RE: WNP-1 ER-OL) l
)
t
l WNP-1 ER-OL 290.01 Q.
Provide in Chapter 5 information on the amount of drift and the predicted direction and distance of the maximum amount of drift.
A.
Section 5.1 will be amended to include the requested information.
290.02 Q.
ER page 6.1-18, first line.
" Table 6.1-2" should be Table 6.1-1.
A.
The ER-OL will be amended to indicate the correct table.
290.03 Q.
ER page 6.1-20, first paragraph. A map should be provided indicating where soil sanple collection sites are located.
A.
Soil samples are collected at the four grassland and five shrub sites indicated on Figure 6.1-5.
290.04 Q.
Chapter 6.2.
Provide an Operational Monitoring Program for terrestrial ecology, i.e. effects of cooling tower drift or the basis for not needing one.
A.
Subsection 6.2.5 indicates the intent to continue terrestrial monitoring programs described in Subsection 6.1.4.
The design of the operational program will be influenced by results of the WNP-1 preoperational program and the WNP-2 operational program.
I
WNP-1 ER-OL
't 291.01 Q Provide quantitative estimates of Corbicula sp. densities in_the vicinity of the intake structure.
A.
Dives in the vicinity of the intake structures were performed in May and August 1981'and September 1982 and no Corbicula were i
found. SCUBA dives approximately five miles upstream of the in-li takes resulted in the collection of a few specimens. SCUBA inspections in the river at the intakes, in the WNP-1 and WNP-2 i
circulating water pumphouses, and in the WNP-2 cooling tower basins and emergency spray ponds did not produce any Corbicula.
Yearly inspections will be performed per the Supply System's response to IE Bulletin 81-03 (Letter, D.W. Mazur, Supply System, j
to R.H. Engelken, NRC, dated July 7,1981).
a 291.02 Q.
The site drawing in Figure 3.1-2 is illegible; prov.ide a new figure.
r A.
The ER-OL will be anended with a new figure or a large format of j
the same figure.
291.03 Q.
Compare the anticipated station water use provided during the CP review to the present values.
A.
Present estimates do not differ substantially from projections at the CP stage. The maximum withdrawal requirement is estimated to be 25,200 gpm which is about 500 gom higher than estimated in the ER-CP. The maximum and average expected consumptive uses are essentially unchanged at 16,550 gpm and 11,650 gpm, respectively.
291.04 Q.
Provide additional information on the presence of bass and j
sturgeon in the vicinity of the intake and discharge structures.
A.
Relatively few sturgeon and bass were collected by the Supply System's aquatic monitoring program in the site area between 1974 and 1980. During this time the following numbers of fish were collec ted : white sturgeon-60,.smallmouth bass-57, and largemouth bass-15. These numbers represent 0.2, 0.2, and 0.1 percent of the total catch from 1974 through 1980. White sturgeon were col-lected with gill net, trammel net aad electroshocking gear, whereas both species of bass were collected by these gear and by beach seines and hoop nets.
White sturgeon are recreationally important fish in the Columbia River between Priest Rapids and McNary Dams. Sturgeon are bottom dwellers, primarily scavengers, that feed on crustaceans and molluscs, most notably the crayfish and freshwater mussels present in the Hanford Reach. White sturgeon have been collected throughout the year near WNP-1.
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WNP-1 ER-OL Sturgeon activity seens to be influenced by temperature. As temperatures move above 55 F in June each year, long distance 0
movenents and localized shallow movenents bg5 F.
in. Movements cease by late October as temperature fall below 5 Thermal tolerance data are generally lacking for this species.
Sturgeon usually spawn between May and July in swift currents over rocky or gravel substrates. Size characteristics of sturgeon taken in the Hanford Reach indicate the presence of a viable spawning population. Sturgeon eggs hatch in one to two weeks depending on the water temperature, however, no fry have been collected in the Hanford Reach.
Smallmouth bass (Micropterus dolomieui) are recreationally im-portant fish throughout the Columbia and Snake River basins.
Spawning in the Hanford Reach occurs in April through July and gravid females have been collected as late as August. Nests are built in shallow water over gravel and rock substrate and seldom are located near perceptible currents. Minimal river fluctua-tions during nesting and a 45-day post-nesting period is critical for the successful hatch and survial of bass fry. Fry disperse among nearshore aquatic plants shortly after they emerge. Adults typically return to the river in the late summer. Smallmouth bass produced in the Hanford Reach provide stocks throughout the river at least as far south as the confluence of the Snake River and perhaps to McNary Dam.
Smallmouth bass fry eat crustaceans such as copepods and cladocerans. As they grow, the diet changes to insects and small fishes. Adult bass have been reported to eat insects, crayfish and fishes. Adult smallmouth prefer water temperatures between 63 and 830F, Spawning temperatures are typically between 55 and 680F. The upper thermal tolerance limit for adults has been reported at 950F.
291.05 Q.
Make References 2.2-23 and 2.2-25 available for review during the site visit.
A.
These references will be available.
291.06 Q.
In addition to other requested information provide a summary and brief discussion in table form, by section, of differences between currently projected environmental effects (including those that would degrade, and those that would enhance er.-
vironmental conditions) and the effects discussed in the environmental report submitted at the construction permit stage.
A.
See Table Q291.06, attached.
i 1
3 i
WNP-1 ER-OL 291.07 Q.
The NPDES discharge permit General Condition G1 prohibits the discharge of materials added for corrosion inhibition of.re-circulating cooling water.
Is the proposed use of sulfuric acid in the cooling system in compliance with the current NPDES Permit -
or will an amendment be required? Under what conditions could the cooling system be operated without acid addition?
A.
Sulfuric acid addition for pH adjustment was addressed in the permit application and is allowed by the permit. Acid addition' will be determined by parameters which cause the water to produce a scale (e.g., alkalinity, hardness, total disselved solids, and pH). Acid will not be added if the water becomes corrosive.
4
~
TABLE Q291.06
SUMMARY
OF PROJECTED ENVIRONMENTAL EFFECTS OF WNP-1 OPERATION (ER-CP vs. ER-OLI 1
ER-CP ER-OL Biological Effects of Heat Dissipation System Ef fects of Intake Structure Section 5.1.2 Section 5.1.3.1
- Under " worse case" conditions 0.3% of river No change, except a one year entrainment discharge withdrawn compared to 0.09% at sampling program at WNP-2 (same intake annual average river flow.
structure design) revealed no fish eggs
- All organisms that enter the intake will be or larvae.
lost.
- Adults will be able to avoid 0.4 fps external screen velocity.
- Fish eggs, larvae and fry may be entrained, however, these life stages are susceptible in the spring when river flows are high.
Effects of Thermal Effluents Section 5.1.4.3 Sections 5.1.3.2 - 5.1.3.6 Periphyton Not addressed.
- At subclimax level of growth.
- Diatoms dominate forms.
om
- May enhance growth for short time in winter.
- May decrease numbers near the discharge.
- Overall no significant impact projected.
Benthos Not addressed.
- Discharge temperature below the upper, temp-erature limits for majority of organisms.
- Negligible effect projected.
- Sessile organisms within 15' of the dis-charge may be affected. Change would not affect population or fish resources.
Plankton Not addressed.
- Entrainment time in thermal plume too brief to cause significant changes.
Fish
- Salmonid species most sensitive to thermal No change except thermal plume does not-discharge.
intercept any reported spawning areas.
- Juvenile salmonids are present throughout the year but major out migration occurs in spring when river flows are high and thermal increments low.-
- Adults move along the shore, away from the influence of the center stream discharge.
No migration blockage expected.
- Cold shock not expected because of discharge location on a swiftly flowing portion of the Columbia River.
TABLE Q291.06 (contd.)
ER-CP ER-OL Effects of Liquid Chemical and Biocide Section 5.4 Section 5.3 Discharges l
- Cooling tower operates at 3-10 cycles of No change, except additio1al discussion of 4
river concer,trations, copper, nickel, and sulfate discharges. The l
- Effluent diluted rapidly, with mixing zones three parameters are predicted to have no I
and dilution rates similar to themal plume.
major impact on blota near the site.
I
- After initial mixing chemical concentrations will be at levels at which no measurable change or detrirental effect have been reported.
- Intermittent total residual concentrations (TRC) at discharge = 0.1 ppe. May effect sessile benthic organisms 50' below discharge but losses are judged to be within natural population fluctuations. No adverse impact on fish movement or juvenile survival.
Atmospheric Effects Section 5.1.4 Section 5.1.4 m
Plume and Fog Fomation
- Elevated plumes at 2 km about 2090 hr/yr No change, except the circular tower and 6 km about 450 hr/yr.
configuration makes the estimates even.
- Induced ground fog at 2 km about 690 hr/yr more conservative, and 6 km about 180 hr/yr.
- Fog on Hwy. 240 5 hr/yr.
Drift Deposition Q 5.2 To be included by amendment
- Max deposition 400 lbs/ acre /yr at about No change. Drift rate of 0.05 percent is ~
0.25 miles to south.
conservative by an order of magnitude.
- Less than 1 lb/ac/yr beyond 2 miles.
Drift deposition also decreased signifi-cantiy because only one plant will be operated.
j Radiological Effect of Operation Routine Operation Section 5.3 Section 5.2
- Mult whole body does = 0.14 mres/yr/ unit.
- Mult whole body dose = 0.19 ares /yr.
- Mult thyroid dose = 0.23 ares /yr/ unit.
- Mult thyroid dose = 0.24 mres/yr.
- Population dose to whole body = 0.2 man-
- Population dose to whole body =
rem /yr/ unit.
1.2 man-res/yr.
Plant Accidents Section 7.1 Section 7.1
- Max exposure at exclusion area boundary =
- Max exposure at exclusion area boundary =
0.02 rem whole body and 0.66 rem thyroid 0.01 rem whole body and 0.17 rem thyroid for Classes 1-8.
for Classes 1-8.
- Class 9 (more severe than design basis) not evaluated at CP.
j