ML20037A817
| ML20037A817 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 12/28/1973 |
| From: | Muller D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Rodgers J FLORIDA POWER CORP. |
| References | |
| NUDOCS 8004080868 | |
| Download: ML20037A817 (11) | |
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- 4 DISTRIBUTION EKNXXXIXIII eket File (ENVIRON) pg;g ;p3 RP Reading AEC PDR EP-4 Reading Local PDR L Reading
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D. Muller, EP A. Giambusso, RP
{+i florida Power Corporation J. Vetrano, PSL t.TTN: Fir. J. T. Rodgers R. Foster, PNL
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Assistant Vice President B. Buckley, PWR-4 P. O. Box 14042 J. Scinto, OGC St. Petersburg, Florida 33733 R. DeYoung, ADPWR Gentic=cn:
The following cornents and suggestions regarding Florida Powar Corporation's (FPC) envirotnental conitoring program are being provided as a result of the interagency co:nittee meeting with FPC on Deccabor 11, 1973. A list of attendees is attached.
6 A question was raised as to the adequacy of the sub-objectives of the The sub-objectives as stated in the benthic phase of the program.
31, 1973, attached, Law Engineering Testing Co::pany letter of JulyAs more data is developed cud anal / zed appear adequate at this time.for revicu at the next quarterly meeting, some reorien Some concern was also expressed about the acceptability of necessary.
From the review to date it appears the control areas for this phase.
that the control areas presently being used are the best available and as such should continue to be used until results of the prograa night indiccte differently.
The oopicnkton uork appecrc to be properly directed and the inter-agency comittee will be looking for rare detcils on this phase of the study at the next necting to nare fully access the adequacy of,the program.
There is still sone concern about the entrapoent phccc which scens to be directly associated with the inability to obtcin neeningful semples Scverni ideas ucre suggested to acabers of your in the inta':e ccncl.It was also suggested that c sc=pling progrc t could be designed better once the velocity profiles in the intche cenal 1::ve been obt:Intd.
staff.
These profiles ucre called for ct the ic.st qucrterly ceetin, in late October cud it is our understanding vill be cvcilable in nid-Janacry.
You should pcy particular attention to this part of the pregrca.
cdditional It is the opinion of the interntency co raittee that son.2the period cid-January to in inne.n:nt 4.ta should be tchen durin nid-nay to verify th-results of the u:..aly detn obtcin c last year.
Your plana f,
the pro;;rc:a ucda ce be a e".tencive.
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to acccc,11sh thc t.ish of verifyin'. A sprinC pulSC Ch 21d DC PTCVidCd It is n:t falt that 1 7 et
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.n Florida Power Corporation 2
LEC 2 3 UT.i The salt marsh and inner bay phases appear to be coming along well
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i and should be continued as propo'ed in your past submittals.
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Several thoughts are felt to be worthy of your consideration.
It is understood that the small boat opening in the northern dike of the intake canal has rou been reopened and that you are taking samples from this opening. This should provide data on north-south migration and would also appear to be a source of information on what occurs to such migrating species. Certainly a correlation between N-S migration and species abundance on the traveling screens ought to be possible.
In this case even negative results may prove valuable.
TPC should now begin to put together its final analysis and repcrt on the sourec(s) of the cooling water. This should be ocde available several weeks in advance of the ner.t meeting in order to determine what modifications to the sampling program may be cppropriate. t?e c):pect TPC to make its reco:rendations concerning changes to the program at the next meeting.
February 6-7, 1974, have been established for the next quarterly meeting to be held in Gainesville.
Sincerely, Daniel it. Hullcr, /,ssistant Director for Environnental Projects Directorate of Licensing
Enclosure:
1.
List of Attendecs 2.
Ltr to FPC fm. the Lau Engineering Testing Coopcny dtd 7/31/73 cc u/ enclosures t2. C. /.. Erendi:nore Vice Precident 4. General Counsel P. O. Box 14042 St. Petersburg, Florida 33733
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List of Attendees Interagency Committee D. Hicks representing L. Tebo EPA M. Morford DOI T. Cain AEC (ESB)
EPC J. Johnson FPC R. Lackey Consultant D. Henley Consultant OTHERS W. Regan (Part time)
W. Ott AEC (ESB)
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LAW ENGINEERING TESTING COMPANY Gexechn: cal und Ma:crials Enginaers 2 /49 DE'_K ROAD. S e. / MAR!ETTA. GEORGIA 20062 / (404 07 f.9093 July 31, 1973 p ;c n
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Florida Pc.:er Corporation i
Environmental Affairs
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P. O. Box 14042 3201 34th. Street, South m,
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St. Petersburg, Florida 33733 U (d.u r!
.i Attention: Messrs. Ken Garrison and Joe Johnson
Reference:
Reco=.endations for statistical control and overview of Flori7ia Pcwer Corporation Crystai River Envirchnental Research Progran to Meet Current Federal Requirements, June 11, 1973.
Gentlemen:
In the assigned responsiblity of providing statistical control and overview functions for the above referenced program, Drs. Don E. Henley and Robert Lachey of Law Engineering Testing Company net with individual principal investigators responsible for detailed progran d6 sign, imple-mentation and performance. Our preliminary recommendations by phase of programs are base.d upon our review and interpretation of each proposal es submitted to Florida Po,-ter Corporation and upon oral exchanges which occurred during the course of neeting with each principal investigator.
The format used here is to list the phase of program by name as a major topic. This is follo.ced by our interpretation of the various objectives and sub-cbjectives to be accomplished and by our reccmmendation for statistical
. analysis.
Finally, specific constructive co=,ents are offered relative to implemantation of statistical design and the importance to be derived s
therefrom.
I.
Statistical Control
A.
200PLANKT03 =iSE
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1.
General Objective: To estimate the effect of the power plant on
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zooplankton in the immediate area.'.
a.
Statistical Analysis: Use of multiple regression analysis or
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covariance analysis is the su,ggested statistical method for t se to determine the environmental factors that may ef'fect 5=
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a change in species abundance, biomass and species diversity
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over the period of study at a particular station.
It may be necessary to adjust the data to continuous function or trans-i.
form the data.
b.
Comments: The results of the statistical analysis will be s
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difficult to' relate to the general objective. This may be is 1
I expected to occur as a result of plankton " patchiness" of'the study area. Therefore, sample size-(N) s,ho,uld be resolved by preliminary sampling and as soon as possible.
c.
General Cc=ent:. The initial part of the study should be a planning phase to estimate sample size, select exact hypotheses and determine data characteristics.
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B.
ENTRAPMENT PHASE
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1.
General Objective: -To determine if the fish populations within the canal are essentially independent or to determine if they are sup-,
plied by movement o.f individuals from without.
Individuals could possibly ccme frca migratory fish, general inshore movement, random '
movement of nearby individuals and combinations thereof.
Although
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the statistical analysis described below'are quite reasonable, there does not appear to be a statistically testable hypothesis to answer the above objective as the specific proposal was written.
The key i
prob 1cu is with identifying the Et_ flow of fish without a control.
a.
Sub-objective 1: To determine if a directional movement of b6ttom e
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- ,2ggested Statistical Analysis: naalysis.of variance and/
wm or multiple linear regression can be applied to the Wyoming trap data.
Coments: It will be difficult to extract the influence of
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general fish movements as contributing to canal movements due
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to lack of control data.
b.
Sub-objective 2:
Do the fish populations vary over'the length of the canal?
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Suggested Statistical Analysis: Analysis of variance and/
or multiple linear regression could be.used to handle coffin trap data.
tionparametric tests (sign and run tests) may have to be used, depending on data cha'racteristics.
Comments:
It will be difficult to interpret significant
_..,s results due to lack of control data.,,,
c.
Sub-objective 3: To determine if there is a directional move--
ment of mid and top-water fish species within the canal.
Statistical Analysis:
Analy' sis of variance and multiple
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range testing of gill net data.
Comments:
Interpretation will be difficult because of the 1ack of control data.
A randomization procedure should be considered for net placement.
d.
Sub-objective 4: To determine if the composition of the in-pinged fish population is the same as the canal fish population.
Statistical Analysis: Wilcoxin's signed rank test with the percentage of a given size of a species (or total number of a species) to be used as raw data.
Rank differences in the percentages from intake screen data to those of the trap fish data from the canal area.
Biomass ranking may also be used if desired.
. Comments:
Interpretation of results can be easily supple,
mented by results from 'other statistical tests to clarify the source.of differences, if any.
C.
IM?IliGEMElli PHASE 1.
Objective 1: To determine if the two screens act in the same manner in order to effect impingecent of organisms.
Statistical Analysis: Paired t tests are suggested.
Data sets may not have homogeneous variances so transformation or t test analysis may be necessary.
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Comments: If there is no significant difference, the. screen to be studied should be randomly selected.
2.
Objective 2: To determine the factors which influence. impingement.
Statistical Analysis: Use stepwise multiple linear regression.
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Some of the independent variables (eg." season, time) will
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have to be put on a continuous distribution for analysis.
D.
BEtiTHIC PHASE 1.
General objective:
To determine the impact of the thermal discharge on the receiving estuary, i
a.
Sub-objective 1: To determine the thermal discharge effect ori benthic macrophytes and attached algae.
Statistical Analysis: The comparison of data from the immed-iate discharge areas with data from more distant areas can l
be accomplished uith t tests (or t tests if variances are uneven).
Transformation may be in order, depending upon data characteristics.
Co.~:en ts :
Although the statistical analysis can be conducted interpretation of significant results will be difficult because of the specified lack of equivalent environments.
. b.
Sub-obacctive 2: To determine the thermal discharge effect on micro-invertebrates.
Statitical Analysis:
Comparisons of data between discharge and control areas can be made with t tests.
Comments: Lack of comparable sample areas will nake statis-tical interpretation difficult.
c.
Sub-objective 3: To determine the thermal discharge effects on macro-invertebrates and specific vertebrates with the~ venturi pump.
Statistical Analysis: The key statistical problem is selecting stations which will give comparable results except for the influence of the plume.
Once this has been accom-plished, t tests can be utilized (or tl tests if variances
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areuneven).
d.
Sub-objective 4:
To determine the thermal discharge effects on I
nacro-invertebrates and specific vertebrates with the drop net.
f I
Statistical Analysis: Utilize t tests or tl tests to determine differences between discharge and control areas.
Comments:
Significant differences may be difficult to inter-pret because the two study areas were expressed to differ in many respects.
E.
!10DELLIi;3 - SALT IMRSH A!!D ImlER BAY PHASES 1.
Genera' Objective: To determine whether biomass and/or age struc-ture differ"ences exist between the thermally impacted araa and l
non-irpacted areas.
' Statistical Analysis:
One way analysis of variance with data for standing crop being (1) bic. mass of Spartina and Juncus (2) and average size.
Same statistical design could be used for dcccaposition, oxygen production, or sinilar paraccters.
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If ignificant differences exist, e a multiple range test to identify specific differences.
Coments:
(1) Pre-sampling should be used to estinate sample size to achieve the desired con-fidence interval.
4 (2) It is of paramount importance to select
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stations of essentially identical types, except for influence of thercal discharge.
II.
Overview Evaluations During the course of reviewing individual contracts for the separate phases of the Crystal River program and during personal meetings with the individual principal investigators several problem areas were identified.
These areas by program title and specific problem description are as follows:
1.
Zooplankton Phase: There had been no pre-sampling phase to establish a minimum sample size.
This is necessaiy for establishing confi-dence level for statistical evaluation.
Reco:mendatiors for sta-If tistical evaluations have been made in Section I of this report.
2.
Entrapment Phase:
fio control studies had been established. With-out this, there will be no way to determine whether or not the I
intake canal serves as a diversion or sink for various species of i
fish.
It is recommended that the control area be established in such a fashion as to simulate a canal parallel to the actual intake canal with equal duplicatica of efforts in both area. Recommen-dations for statistical evaluations have been nade in Section I of i
this report.
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Benthic Phase: Again, control area is not defined. This will make I
statistical evaluation of effects on thermally irpacte'd area diffi-cul t.
Distribution and abundance mapping of benthos via computer I
methodology utilizes 164 actual data points. The reaainder are l
interpolated by computer averagun9. It has been recommended that Severs. cof the actual points be omitteu during the computer run.
These actual points should then be compared to computer obtained val'ues after the run is completed to determine the relative.
accuracy of this technique.
Ho efforts were planned for correl-ation of percent abundance by species (or biomass) within the-canal to that being. impinged on screens. This recommendation has been made in Section I of this report. '
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4.
Impingement Phase:
Statistical treatment recommendations were made and are as shown in Section I of this report.
5.
liodelling - Salt liarsh and Inner Bay Phases: This phase will in-corporate into model form much information to be obtained during performance of work in other specific programs.
It was found that information was being obtained which should be incorporated
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into the modelling efforts but no plans for such had been spec-ified.
This was due to lack of communication between project' principals.
Recommendations for maximum communications are dis-L cussed in Section III of this report.
Community metabolism studies within the marsh and inner bay areas had been thought out well.
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between control and impacted areas had been made.
Provisions for expressing diversity indices were discussed.
It was recommended that in addition to numbers of ' species per one-thousand individual's as an index of diversity, the Shannon-Weiner Function also be j
utilized in modelling efforts.
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III.
Overview Recc pendations It is reconnended that monthly progress reports be made by each principal l
investi5ator durinD the course of the Crystal River anvironmental studies pro-j gra:n.
These reports should be presented orally from spmarized data in written i
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I form. This sumarized data should be made avai bleto. cach principal in--
vestigator.
In addition, each principal investigato'r should project next month's activities.
It is felt that this procedure will accomplish three primary objectives:
1.
Make possible. for early and maximum dissemination of data. This is y
an important aspect of the program since several principal inves-
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tigators are developing information necessary for integration of
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the separate phases into a unified whole (modelling efforts).
2.
Trcuble areas can be identified quickly and remedial efforts take'n early to solve them.
3.
Make possible for maximum utility of the statistical control and overview functions provided for-in the program.
-If there are any questions relative to this report, please contact Dr. -
Don E..Henley.
Very truly yours, LAU EliGI*iEERIl4G TESTIliG COMPAtlY i
i Don E. Henley, Ph.D.
Manager, Environmental Science Services
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Jack T. Parker, P.E.
Branch Manager i
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