ML19341B560

Dike Revegetation Monitoring at LaSalle County Station, Aug 1980.

ML19341B560
Person / Time
Site:	LaSalle
Issue date:	08/21/1980
From:	Voigt J VOIGT, J.W.
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R E P O R*1 T0 s

C0!'MONL'E ALTH EDISON COMPANY CHICACO, ILLINDIS DIKE REVEGETATION MONITORING AT THE LASALLE COUNTY 3IATION AUG., 1960 PREPARED AND SU3MITTED BY JOHN W. VOIGT ENVIRONMENTAL CONSULTANT N ?Y. N John W. Vo i g3/, P hD Ecologist August 21, 1780 82 0 2020$$

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TABLE OF CONTENTS ,

i 11 1

I List of Tables List of Figures iii Setting and Background 1 3

- Field Methods The Vegetational Cover 5 l

Statistical Analysis 9

~ ,- _

Results and Discussien ' 10 i

Literature Cited 13 Appendix:

A. Field data fro = dike vegetation 14 1

! B. Statistical Calculations 20 i

C. Photographs 24 D. List of species, Scientific names 32 l

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LIST OF TABLES Jable 1. Plant species co= position and cover on

- the cooling lake dike at the LaSalle County

' Station in August of 1980.

Page I

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- LIST OF FIGURES s

Fig. 1. Location of dike vegetation sarpling transects at the LaSalle County Station page Fig. 2. Schematic representation of the top, mid-slope, and bottom-of-dike, transect vertical locations A, B, and C respectively.

page 111

SETTING ASD BACKGROUND }.

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The LaSalle County Station cooling 1ake is enco= passed by approxi=ately 3500 ft. of earthen dike. To protect the outer face ot the dike against soil ercsion, crown' vetch rapidly establish a dense (Coronilla varia) was seeded to vegetational cover for the purpose of stabili:ing and holding the soil against the forces of erosion.

A vegetational sa=pling(=enitoring),progra= vas started in May of 1978, and continued in August to include the Autu=nal aspect. The =enitoring was repeated during the approxi= ate dates. Present sa=e =onths in 1979 at the sa=e latest year ss=pling(1980) was co=pleted in May and the sa=pling was on August 13, 1980. This year concludes a three the vegetation. Procedures have year period of =enitoring been developed which show the establish =ent, i=provement of and the stands, and the overall success of the vegetatio.

the cover it provides.

The aggressive nature of the crown vecch, and the nor=al trend of succession have led to the development of dike.

an excellent supporting vegetation on all faces of the

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r Field Methods .

Twenty-one 20: line intercepts (Canfield, 1941, 4

USNRC, 197S) were randocly located perpendicular to the dike (Fig.1). The hori: ental and vertical (:cp, =id-slope, er bet:c of the dike) locatiens were designated as ver:1 cal loca:icns A, 2, and C respectively (Tig.2), and were predetermined by :he use of a table of rando: nu=bers.

Alcng each 20: transect, vegeta:ica vas sampled along five 1: subsa:ples. The loca:icn of each intercep: sub-sa:ple was also predeterzined by the use of a table of rande: nu=bers.

Data recorded frc: each sub sa:ple were the total length (c=) cf vege:ation intercepted, and the total length (c=) intercepted by each species. Measure:ents were to the 1 nearest full centi =eter. Photographs were taken of each ,

l transect.

Speci= ens of all plants encountered were collected.

l These have been pressed and vill be =cunted and accessioned into a per=anent ecliection for docu=entation and'further j

reference.

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rigure 2. Schematic representation of the top, mid-slope, and bottom-of' dike.

transect vertical locations A, B, and C, respectively.

The Vecetation Cover .

The vegetational cover on the LaSalle County Station

$ dike in August sampling averaged 92 percent. This was substantially higher than f o r Augu s t samplings of the two previous years during which the vegetation has been monitcred.

Crown vetch (Corenilla varia)do=inated all other species in the ground cover. The average co= position of a

this leguninous species was 63.53 percent in the August sampling. This again was an increase of significant proportion over August sa=plings of 1978 and 1979, and was, as well, an increase of some six percent over the May sa=pling of 1980.

The next ranking species in the composition of the dike vegetation was Aster pilosus whd.ch =ade up 10.54 percent of the overall cover. This aster is a perennial species with dense habit. It is often vaist-high, for s excellent cover and has abundant thizo=es to hold the soil. This species is looked upon as an outstanding plant for =aintaing the stability of the soil on slopes.

Another plant of similar tall habit was sweet clover.

The plants, both yellow and white sweet clover (Melilotus officinale, and_g. alba) grow chest-high and even without leaves, which drop during Sunner, provides an excellent cover. The plants are deep rooted, extensively branched, 5

and add greatly to the stability of the soil as well as i

intercepting rainfall to prevent excessive runoff.

All species of grasses ce=bined furnished over twelve percent of the everall co= position. Crasses of most significance were Slender wheatgrass(Arroovron sp),

Elv=us, Scooth Bro =egrass(Ero=us inermis) and bluegrass (Pea p r a t e n s i _s_ , and Poa co=pressa), and ti=othy(Phleue pratense). Three species, wheatgrass, ticothy, and s=ooth bro =egrass =ade up nearly 2/3 of the grasses present.

I Grasses are well known for their dense cover, extensive root syste=s and other soil stabilizing characteristics.

In all there were twenty seven species encountered in the August sa=pling. Despite this diversity of species, each slope aspect of the dike vegetation has taken on a

- considerable de gree of unifor=ity and co== unity structure .

characteristic of that particular slope aspect.

The south facing slope possessed the highest percent-age of cover. Here the cover was 99.6 percent. Crown vecch as the do=inant species reached its best expression on the south facing slope. On this slope crown vetch averaged 85 percent. This is an outstanding cover and can scarcely be i= proved upon. The transects of the south facing slope were: 13;3A;4C;5A;7C; and 9A.

The east facing slope of the dike included transects 10B(designated on the dike =arker poles as 99A); 11A; 12A; 13B;15C;16B; and 18C. The do:inants here were crown vecch 6

wi:h 4 8 pe r een: and Aster with 25 percent for a total co=positten of approximately 63 percent of this face of the dike by these two species.

. The north face of the dike included transects 20C;22A;23B;24B;25B;26C;28C; and 34A. The average percent of cover en this 31 ope aspect was 92 percen:. Crown vetch

=ade up abou: 64 percent of the vegetation of the north facing sicpe of the dike. *'he a t g r a s s =ade up nearly a

5 percen:. Aster =ade up = ore than 4 percent, and grasses (s=oc:h bro =c, Elv=us, Phleue, and Poa spp.)=ade up about 11 percent ef the north slope vegetation. The environLen:

of this slope is cool and all the grass species are known as coel season types.

There was a re=arkeable consistency of cover between dike levels A,B, and C. All three averaged about 92 percent cover. The different levels of the dike showed recogni:eable groupings of species. The ypper dike (A),

showed the b est expression of crown vecch, followed by l

the lower dike section(C). Thus, the upper and the lower i sections of the dike had = ore crown etch than the =id-slope (B).

The mid-slope (B) had = ore Aster, = ore sweet clover, I and = ore grass. The lower level (C) had a greater variety of plants and =o re that could be considered weedy. All the species present on the lower level were well adapted to the high degree of =oisture and all were considered to provide an excellent cover: .

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The seeding of the dike faces has been successful.

The increases in cover and in percentage composition on

~.~ the part of the seeded species subsequent to the years 1978 and 1979 have been rapid. the steep slopes of the dike, the different slope aspects (north east and south),

present varied and difficult conditions for establish-ment. Despite these difficulties the vegetation has l attained, in three years time, a virtually complete cover (95 percent in May, 1980, and 92 percent in August, 1980). The moderate amounts of Aster, Sweet Clover and grass species is looked upon with favor. All these plants are efficient soil binders and have foliage capable of intercepting and holding rainfall efficiently to reduce runoff.

The present vegetation is most suitable to do what it was designed to do.

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Statistical Analysis The twenty one transect sample means are give n- in

, $T ab l e 1.

The sub s amp le means are the figures fiven in this table and they ranged from 70.0 to 100.0 ch4 mean for all samples was 92.46. The standard deviatica among sample 7.91). At the ceans was 7.87. The range of variance was (

1 percent level of confidence, the lower confidence interval w as 84.09. The number of sample meaas below 84.09 was two( sample 12A, with 70 percent, and 18C, which was barely below with B3 percent). Thus, there were two sample failures according to the formula (Table 1).

Another calculation was done(ANOVA) of the samples at vertical levels A,B, and C.

The sume of the respective vertical sample means were 648.6, 644.6, and 648.0. In this analysis F is significant at the 1 percent level with degrees of freedom between a and degrees of freedom within 18- if F is greater than or equal to 6.01. F = . 01, there-fore there is no significant difference in the vegetation cover of vertical levels A,B, and C.

Calculations for statistical analyses are given in Appendix 5.

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i Results and Discussion Each year since est.ablishment the percent of

- cover of the randomly selected samples and subsamples has increased. Each year the number of vegetational failures has decreased until they are negligible in the present year (none in May and two in August, but one of these just barely reached the level for declared f a ilu t e).

The cover during May was about 95 percent and the mean for August was 32.46 percent. The August cover would i

likely have been even higher except for normal and abnormal

' defoliation of crown vetch and sweet clover.

There was no significant difference in the vegetation cover of the vertical levels A,B, and C. Overall the cover at any and all levels and sections of the dike appear to be excellent, and capable of doing the job for which it was planned, l

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U Literature Cited .

Buchanan, W.J. 1975. Vegetation =onitoring. in Terestrial =onitoring program for construction phase of the LaSalle County Station 1974 (IBT No. 4507). First annual report to Co==en- 70pp.

wealth Edison Co:pany, Chicago. Chapter 2.

1976. Vegetation monitoring. in Terrestrial monitoring program for the construct-ion phase of the LaSalle County Station 1975.

NALCO Environmental Sciences. Second annual report to Coc=onwealth Edison Company, Chicago, Chapter 1. 66 pp.

Canfield, R.H. 19-A. Application of the line intercept For.

method in sa=pling range vegetation. J.

39:388-394 Nie, N.H., C.H. Hull, J.C. Jenkins, K.Steinbrenner, and D.H. Bent. 1970. SPSS Statistical Package for the Social Sciences. 2nd Edition. McGraw-Hill Book Company. N.Y. 675 pp.

i USNRC, 1978. Draft environmental statement related to operation of LaSalle County Station unit numbers one and two, CECO Docket Nos. 50-373 and 50-374 Office of Nuclear Reactor Regulat-l ions, NUREG-0437, Washington, D.C.

Wright, R.L.D. 1976. Understanding Statistics, Harcourt Brace, Jovanovich, Inc. New York, N.Y.

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Appendix Field data from dike transects at the LaSalle County Station, Aug. 13, 1980 ,

Intercept (No. & Length in Cm) 100 100 100 100 100._ Total 500 f Length # Length f Length # Length i Length

( 2) ( 4) (9) (11) (13)

Transect No. 18 Subsample( ) 50 50 Ambrosta attemtsiifolia 50 50 B1 dens sp 60 Aster sp. 40 20 20 Phleum pratense 20 50 50 Salix nigra 60 Poa compressa 40 20 60 100 50 210 Coronilla varia -f 100 100 100 500 Transect No. 3A 100 100

( 3) (5) (9) (11) (14)

Subsampic No.( ) 100 100 100 100 100 C. o r o n t il a varia_ .

100 100 100 100 500 Transect No. 4C 100 Subsample No ( ) (1) (3) (4) (10) (14) 40 100 100 440 coronilla varia 100 100 20 20 Amb ro s t a trifida 10 10 Bidens sp 30 30 Poa comy_ressa Transect No. 5A (11) (14)

Subsample No ( ) (3) (5) (9) 500 100 100 100 100 100 100 100 100 100

_Corontila varta 100

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Appendix Pield data from dike transects at the LaSalle County Station. Aug. 13, 1980.

Intercept (Ito. & Length in ca.)

1. Length i Length Total _

1. Length # Length

1. Length 100 500 100 100 100 90 11 12 Transect No. 7C 1 3 6 Subsample No. 100 390 90 100 10 100 Coront111 varta 10 10 Aster sp 10 30 Echinochloa sp 30 20 Hordeum jubatum 20 20 Juncus torreyt 20 10 Juncus tennuts 10 0

PhragmL'tes communis 100 500 100 100 100 100 11 12 Transect No. 9A 2 3 8 Subsample No. 100 100 100 100 100 coronilla varia 100 100 75 100 20 72 16 Transect No. 99A (B) 4 9 11 Subsample No. 100 300 30 100 32 70 Coronilla varta

~

2 30 1 Aster sp. 20 1

Bromus iner g 20 25

_Solidag sp. 25 60 Bromus tectorum 60 2 Meltiotus sp. 2 5 Phleum pratense _ 5 3 Poa pratensis 3 Bromus tectorum

Appendix Field data from dike transects at the LaSalle County Station, Aug. 13, 1980.

Intercept (No. & Length in#ca.)

Length fLength Total

1. Length # Length i Length 100 86 100 100 100 Transect No.11A 12 16 4 5 Subsampic No. 2 60 10 150 60 20 70 Coronilla varta 70 Phleum pratense 80 40 260 40 100 6 6 Bromus i n e r m i s_

Chichorium intybus 65 90 35C 65 80 50 Transect No. 12A, 8 9 13 2 5 Sunsample No.

15 70 85 125 e Coronilla varia 20 10 45 50 122 Aster sp. 30 12 80 5 Solidago sp.

5 10 10 Physalis sp. 3 Melilotus sp.

3 Cirsium sp.

80 85 440 100 85 90 Transect No. 13B 10 11 5 6 2

Subsample No.

30 130 100 40 Co r o n i_113 varia 40 65 Ambrosia artemistifolia 5 60 25 125 Solidago sp. 20 10 60 30 60 Aster sp. 10 20 30

.Melilotus sp. 30 Poa pratensis e-A n

Appendix Field data from dike transects at the LaSalle County Station, Aug. 13, 1980. e Intercept (No. & Length in cm). # Lenath Total

1. Length

1. Length # Length # Length 100 100 500 100 100 100 Transect No. ISC 16 20 1 8 11 Subsample No.

100 100 320 20 100 5 Coronilla varia 5 Salix nigra 80 Aster sp 80 95 95 Leersia oryzoides 100 73 90 85 100 448 Transect No. 168 13 16 4 9 Subsample No. 2 40 60 C 10 10 3 3 Coronilla varia -

240 Ambrosia artemis 11fo11a_ 10 30 100 100 115 Aster sp 70 45 20 20 P L l e iIn gr a t e n s e_

10 10 Solidago sp.

Rumex _crispus 100 415 100 60 75 80 16 Transect No. 18C 5 7 8 10 -

Subsample No. 50 50 5 5 Coronilla varia 160 Ambrosia trifida 75 80 to 85 185 Aster sp. 100 10 10 Agropyron sp.

Cirsium sp 9

Appendix Field data from dike transects at the LaSalle County Station. Aug. 13, 1980.

Intercept (No. & Length in cm)

1. Length # Lenath # Length i Length Total

1. Length 80 65 100 445 100 100 Transect No. 20C 6 9 10 11 Subsample No. 1 200 100 100 5 70 Coronilla varia 65 Ambrosia artemis 1Lfo11a 60 60 Aster sp. 90 110 20 5 Bromus _t e c t o r_u m 5 Lactuca scartola 97 100 497 100 100 100 Transect No. 22A 3 5 8 14 Subsample No. 2 95 100 495 100 100 100 2 ,

Coronilla varia 2 a Agropyron sp.

95 100 490 95 100 100 Transect No. 238 2 5 6 10 13 Subsample No.

80 50 415 90 95 100 50 Coronilla v a r t_a 50 Agropyron sp. 15 25 5 5 cirsiu_a sp.

90 80 470 100 100 100 Transect No. 24B 3 7 9 13 1

Subsample 50 350 100 100 100 20 Coronilla varia_ 20 Ambrosia attemistifolia 40 40 Aster sp 60 60 Agropyron sp.

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Appendix 1980.

Field data from dike transects at the LaSalle County Station, A u g .13, Intercept (No. & Length in ca.) f Le_ngth Total

1. Length i Length # Length

1. Length 100 480 95 85 100 100 13 16 Transect No. 258 2 7 10 Subsample No. - 100 410 95 15 100 100 10 Coront11a varia 10 60 Phleum pratense 60 Agropyron_sp. 70 430 100 60 100 100 12 13 Transect No. 26C 1 4 7 Subsample No. 210 100 20 90 20 50 Coronilla varia 20 90 3 Aster sp.

10 90 10 Elymus sp. 10 10 30 Cirsium sp 20 20 30 Poa pratensis 10 10 Convolvulus sp. 10 Melilotus sp. 65 460 100 95 100 100 16 20 Transect No. 28C 6 8 12 Subsample No. 260 100 60 5 10 100 Coronilla varia 5 5

5 Agro,gyron sp. 60 185 Phleum _ pratense 40 85 Melilotus sp .

460 100 100 100 60 14 100 .

10 Transect No. 34A 5 6 8 ,

Subsample No. 100 450 60 . 100 10 90 100 Co r_o n i'll a varia 10 Bromus inermis .

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23

Appendix PHOTOGRAPHS 1B- Mid-slope; predominantly crown vecch; south face 1 of dike.

East face of dike, vertical level A; predominantly smooth bromegrass(3ronus iner=is).

North face of dike; vertical level 3, showing crown vetch (Coronilla varia).

South face of dike; vertical level C; general view showing black willow (Salix nigra) in ditch 3A- Souj th face of dike; vertical level A; pure stand of crown vecch.

4C- Heavy stand of annual weeds in ditch. Just beyond the weeds near the chain link fence is a good stand of crown vetch.

5A- South face of dike; vertical level A; pure stand of crown vetch.

7C- South face of dike; vertical level C; Exceelent stand of ctown vecch.

9A- South face of dike; vertical level A; pure stand of crown vetch. Notice the profusion of ste=s which cover the soil even though nearly leafless due to dry weather or defoliation by insects.

99A- Listed on dike marker pole as 99A and located where marker 10 would normally be. Light colored vegetation is annual bromegrass(Bromus__tectorum). The vegetat-ional matrix is crown vetch and Aster-llA- East face of dike; vertical level A; Crown vecch in foreground gives way to smooth bromegrass(Bromus inermis).

12A- East face of dike; vertical level A; sweet clover (Melilotus) in the foreground; crown _vecch and Aster in the background.

138- East face of dike; vertical level 3; sweet clover in foreground with curly dock (Rumex crispus); crown vetch in the background beyond the ditch.

24

Appendix Photos continued .

15C- East face of dike; vertical level C; good stand of

- crown vetch en far side of ditch.

16B- East face of dike; vertical levelofB; stand lightpilosus.

Aster colored vegetation is nearly pure 18C- East face of dike;sharply verticalwith level C; crown Aster pilosusvetch in in front foreground breaks of ditch.

20C- North face of dike; vertical level and C; crown vetchon crown vecch on far side of ditch; Aster pilosus the near side of the dicca.

22A ,N o r t h face of dike; vertical level C; nearly pure stand of crown vecch. k'h i t e object in foreground is clip board.

23B- North face of dike; vertical level B; good stand of crown vecch.

24B- North face of dike; vertical level B; excellent .

stand of crown vecch.

vertical level B; excellent stand 25B- North face of dike; of crown ve:ch.

face of dike; vertical level C; view from 26C-ditch Northwest looking up the dike toward theand' top;Aster.

good stand of crown vecch mixed with grasses face of dike; vertical level C; view of 28C- Northwest ditch with transect string 20 meters long; crown vetch and sweee clover.

face of dike; vertical level A; nearly 34A- Northweststand of crown vecch; view from lower end of pure i

transect towards the top.

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Appendix D LIST OF SPECIES Wheatgrass '

(Agropyron dasystachum) (Hook) Scrib.

Commun ragweed

. (Ambrosia artemisiifolia)L.

Western ragweed (Ambrosia psilestachya) D.C.

Ciant ragweed .

(Ambrosia t r: lida) L.

Hairy Aster (Aster pilosus) Willd.

Spanish Needle or Swamp Beggar's Tick (Eidens connata) Muhl.

Smooth bromegrass (premus inermis) Leyss.

Annual brcmegrass (Bromus tectorum) L.

Blue Lettuce or chickory (Cichorium intybus) L.

Crown vetch (Coronilla vcria)L.

Bull Thistle (Cirsium vulgare) (Savi) Tenore Field bindweed ,

(Convolvulus arvensis) L. ,

Barnyard' grass (Echinochloa crusualli) (L) Beauv.

Path rush (Juncus tenuts) Willd.

Torrey's rush (Juncus torreyi) Coville Rice cutgrass (Leersta oryzoides) (L) Swartz 32

Appendix D LIST OF SPECIES .

Prickly lettuce (Lactuca serriola) L.

Timothy (Phltum pratense) L.

Kentucky bluegrass (Poa pratensis) L.

Canada bluegrass (Poa compressa) L.

4 Giant reed (P h ragmi te s austre.lis) Trin.

Ground Cherry (Physalis subglabrata) Mack. & Bush Curly Dock (Rumex crispus) L.

2 Black Willow l

(Salix nigra) Marsh Goldenrod (Solidago sp) 1 33 e

n 4---n ", -- -

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> T** 9 g AttaCP.ent 3 D

VL.0.21AS L::CS 2. E- ~ "I aM JL*3 E. !I33U;C:2, bereinaf tae rc.f arred to ca L1'

• 11'.-i1:027J?., ovs f c- lad in 1.stalle County,1111sais said f ar=1:M heing lacatW in rse east half of Section 11, brcodia14 Townebip.

WDLuS: C C"# C h*.,7X.r.: ED1I;;h CO.9A3Y, an 1111.vis Cor-oraeton, hare-inaf tar raderrai to a: 12:1508, cvse lasi in 2,ronf iald Tavnsnip, Lt.Salle C:,unty, Illic.ais, said lam heing ed

• ace t to the K!14.IL .A-: TIS 311!:I:1 f ar:slami sentionM above. located on said DISON's la::.1 la a cooling lake enclosed by an as-then dita, herair.af ter ref errad to as id: DLC, and a.nucisar powered electrie 2:n-e rs ti.ca s t a tic a und st co ca truc tio n.

WIALLS KILI."ONZSSI::CII bzwe couplained to the Nucisar Eagulatory Co ==tasion, which is carrying on an icvestigation relative to licenaina CIs03'S muelear pwered go:eratics statien, that silt ruroff during construction of idZ DIII caused ermaian to and allt deposits in a portion of a drainage ditch ru== ins through the K ~ 'A-N!J S1:;0:1 f ar=. land. Said drainage ditch is irova se tAs A.rmstrong Sun an.1 shall hereir.af ter he ref er:cd to as the EW.

W 112AS: I* " ?A-3I532' Il have are. aged the servicas cf a draisa.se

~f contractor to give a fi a estia. ate of the cost of repairing ani restorin.g the EW, Said contractor agrsed to ra; air tha -1W for the total au= of $5,300.00 sal do certais other werk on the KE Y "?A-NESSUCZ1 f arm, unralated to E"_!.r'.gA.

HZSSCICII'S cesplaint against CISON, for an additional sum of accey.

NOW Tri1117C11: It ia agroed to by aM betveen rit r w?.zA-:tESSDCII and DISC 3 as to the f ollowinst

1. K'?'r %-NESSISO41, et the direction of EDISOY, will engage the services of the drainage contractor who vill repair se.1 restore the RW and E.3ISCN, upon the azacution of this Agressent, pays to KILL 12.ZA-NESSI:10C1 the sum of Five Thous.s1 Eight l'uMred Dollare (35,o0J.gu) in full satisf action of all oblicationa DISCH may have had, if any, with respect to the rep. air aM restoration of the RW to the date of this Agreement. In addition to the $5,800.00 provided above, EDISOM will pay 42.000.00 to Dave 34dec's.ar for labor and machinery for resseding Edison agrene of the RW, ami $103.00 f or coste of se=1 to KILL-J.ZA-NESSI!CE2 I

t I

i I that to ti.s c:t:st th. t the RN cas t bo reser d ha, Cl30a wLil pay the cost of I

labor, s.schicery aM saad up to thiti;sa that the vegetation os "itL DIC and ti.a 101 has boas established as doeur,autmi in accordance with taquirs. scat: ?t fc:th is the Fic.sl Ievinror.:aotal Stataucot relatira to the operation o f L.Salle County Statica 1:ait lass.1 eM 2 dated Nove=Lar 1978 published by the U.S. Nu: lear Lagula tory Cecission, Sec tion 4.2.1, page 4-6 Esquiresents 1 af.d 3.

2.

KILF"W1::SItCE2 vill be respona1Lle for paymant of any aM all charges, above tt.e $3,300.00 payable by 1:dison, unde by saLI contractor for repairs to the AL:i.

3.

DISO:d will contir.ua its prograia of planting vegetation on THE DIEZ until there is sufficiant cover to hold back silt ruuoff into the RZl. DISON vill ir.cpect Tn; DIE::

twice a year, once in the spring and once to the f all, to insure the integrity of sa!J vegetation and taka steps to correct such vegetation if necessary during the lif e of tha nuclear station.

4 e

DIE:t sis 11 he grantn! accces to the kWI across the s11.LT.1*.IA-liF.SSl?iCIR propetry it rmasonable ti=ce for tLa purpoca of cor. ducting tha semi-annual inspec-tione of the 113 as set ferth as part of caquirer.aac S mantionm3 in Paragraph (1) above.

C150:1 vill notify ths EILU.LTA-NES;ISCLa5 or their Tenant before estaring tha property for said icspections.

5. rm r4-Ilus:NCI2, in cor. sideration of the $5,500.do Lorein receivM and of the $2.200.00 received for labor, eiguipment an.1 materials regarding re-sooJica of the tr=stror.g Ein, do bereby release CISON from any and all liability for/ futurs 14aintesance, repair and restoratiou of the RC3, except such additlocal r2aeeding as may reasonobly becos.ie necessary as ichlicated in Paragraph (1) ab

~

except EDISON vill continue to be liable should 1t be deteruined enat datanges cause.1 to the 101 by ranaon of a f ailure by ::.JISO.: to couply with or to maintain 1 templiance of the require =ents fot maintenance as may be found in the conditioca and requirc:sents set forth in the Fir.al Envirou=antal Statsunut ralating to ths operation of LaSalle County !!ucelar Power Station Unit hos. I asui 2 datad November, 1974, publialwml by the U.S. !!uclear Hagulatory Cournissiou, Sectlan 4.2.1, page 4*4, paragraphs 1 through S.

This agreement shall eatami to aui Le Linding upon the heirs, e sacutors, administrators, ouccassors and assigna of the roepective partime hereto.

F00R ORNM .

t. _ _ .

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Er. S.c=Ts L. Could, Oirector of Real 5 :1:e 77"A C His)E/J 7' h Cc .onwcal:h Edison Company P.O. 5:x 767 Chicago, Illinois 50690 de: Y.illelea/Nessinger Ar=s treng Run =atter

Dear To=:

I as in receipt of your let:er of September 26, 1979, and have fo: arded a copy of the same to Mr. and Mrs. Nessinger for their review.

I have asked that they contac: ce after they have reviewed the sa=e. After tha: I will be in contac: with you.

A few =a::ers in your le :er of Sep:c=ber 26 should be cleared es a: the outset. It should be poin:ed ou: : hat i: was our clients , and no one else, vno pointed the Armstrong Run deficiency cut to the N?.C. This was done so pri=arily throucs our effor:s in con acting the 'n' ashing:on office and in conferences vich the=.

Prior to that ti=e there had been sporadic complaints to Cu a nvealth with little or no result, and it was only after we wen: to the NRC that the land came under scrutiny and resulted in what we believe to be substantial repairs and, hopefully, i

concinued future restoration.

k Secondly, nei:her =y clients nor I are " backing away frcm the agreement." I: vas through our efforts that the work that was done this su==er was done at the sa=c price as was quoted last year. The "agreemen:" concerns the price to be paid for the repair wor'.< dene to the ditch pursuan: to NRC regulations and has nothing to do with loss of, cropland or expenses..

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Mr. ~heess L. C:uld

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Page ?.:o Oc:ober 2, 1979 Wat has been sue.-ace.ed in ev letter of Senterber 17 is a considerable expense incurred by 'our clients in' bringing to the attention of the-liRC r.at crs which vere either knet.n to Cor en-wealth or should have been considered in their engineering

• studies.

I will contact you as soon as my client have had an opper-tunity to read your letter.

Very truly yours, n

. DyN & FICH*ER, P.C.

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/ Lawret.ce R. Fichter LRF:djm cc 'r. & Mrs. Fugh 1. Killelea 8.r. & Mrs. Fre < Nessinger . .

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Attachment 5 Armstrong Run Chronology Identification of Names Used Herein w

Associated with Property F. Nessinger - Co-owners H. K111elea - Co-owners Larry Fichter - Owners' Attorney Bob White - Owners' Attorney Dave Bedecker - Tenant Farmer Soi' Conservation Service (SCS)

Alan Madison Robert Smith

-)

Commonwealth Edison Company (CECO)

T. L. Could (TLG)

G. Bartling P. Manning N. J. Schilling S. Wolinsky

ARMSTRONG RUN CHRONOLOGY 7-14-77 Fichter sends a letter to NRC complaining of erosion and

- silting cn his clients' property which they attribute to C.E.Co. construction.

Fichter also sends a letter to T.L.G. requesting a meeting to discuss this problem.

8-24-77 Fichter, H. Killelea, Frank Nessinger, Bob White and Dave Bedecker =ect with NRC staff, Argonne National-Laboratory staff and C.E.Co. representatives.(S. Wolinsky., G. Bartling and P. Manning) at the Killelea farm to investigate Fichter's co= plaint.

9-13-77 fichter, H. Killelea, Frank Nessinger meet, in Chicago, with C.E.Co. personnel, NRC, and r.epresentative from Argonne National Laboratory and'(argent and Lundy to discuss erosion proble=.

10-13-77 T.L.G. telephone to Fichter: Requests Fichter contact S.C.S. to develop plan to correct erosion and submit to l

Edison for approval and reimbursement. T.L.G. emphasizes i

that Edison does not feel it is responsible for erosion problem and will not undertake further maintenance of the ditch. Offer =ade in order to avoid intervention or litigation.

! 11-23-77 Fichter letter to T.L.G.: Rejects offer of 10-13-77 and requests Edison contact S.C.S. in order to develop a plan for erosion repair and control and that the subsequent plan not be subject to Edison approval.

12-08-77 T.L.G. letter to Fichter: Accepting counter-offer of 11-23-77 letter.

2-16-78 NRC submits its analysis and recommendations concerning the erosion problem.

4-13-78 Meeting at Armstrong Run attending: Fichter, Dave Bedecker, T.L.G., G. Bartling, N. Schilling, Alan Madison (3.C.S.)

and Robert Smith (S.C.S.). After investigating the Run, B.C.S. agreed to submit a plan for work required.

, v -- , ,..m. ,

4-26-78 S.C.S. submits its plan.

4-27-78 Fichter letter to T.L.G.: Outlines his proposal for what should be included in settlement agreement in conjunction with S.C.S.'s plan.

4-28-78 Bedecker, Bartling and S.C.S. stake areas along Run to be repaired. ,

5-15-78 Dave Ecdecker told George Bartling he had contacted Universal Contractors, Ottawa, Illinois, and they agreed to give him an estimate for repairing the erosion damage to the Armstrong Run.

7-25-78 Universal Contractors told Bedecker they would not be available to repair the Run. Bedecker then contacted T.T.K. Enterprises, Duight, Illinois, and asked them for an estimate.

9-26-78 Bedecker received T.T.K.'s estimate.

9-29-78 Bedecker told G. Bartling that Edison's portion of the repairs would be approximately $5,800.00 and Killelea-Nessinger's would be approximately $2,200.00. Bedecker was to sub=it the bid to K.-N. on 10-1-78 for their approval. G. Bartling asked Bedecker to send him a copy of the estimate for Edison's approval.

1.0-05-78 T. Gould called Larry Fichter and infor=ed him we had drafted a settlement agreement.

10-16-78 Copy of estimate ror repair work received from D. Bedecker.

Estimate did not include reseeding the slopes of the Run.

T. Gould called L. Fichter to ask him about reseeding.

Fichter is going to talk.to K.-N. about this.

10-17-78 Draft of the settlement agreement sent to Fichter.

10-31-78 T. Gould called L. Fichter; Fichter said they have decided not to seed until the Spring. He is revising the agreement to take this into consideration and

. promised we would have a copy within the week.

11-20-78 N. Schilling talked to Larry Fichter. Fichter said the

- K.-N. have the release, and he has not heard anything from them as yet. He also said the contractor will not be able to provide an estimate for seeding because he will not know how much seeding will be required until after the reconstruction work is done.

12-14-78 Telephone conversation between Fichter and Schilling.

Fichter said he had not heard from the K.-N. for some time concerning the Armstrong release. Schilling suggested we call K.-N., but Fichter requested that we should not do this. He will try to contact them and get back to us on December 18, 1978.

f 12-22-78 Larry Fichter said he still had not heard from the K.-N.

He is going to send us a copy of the release with his proposed changes.

3-13-79 G. Bartling said he talked to Dave Bedecker on or about >

March ist, and at that time, Bedecker was trying to get an estimate of cast for seeding. George is going to  ;

call Bedecker to see if he made any progress.

l 3-13-79 Telephone conversation between Fichter and Schilling.

Fichter said he would talk to K.-N. and try to get them to sign the release.

5-01-79 Gould talked to Fichter today. They have agreed to hire l

the same contractor that gave us the bid last year for

(

dredging and shaping the ditch. The price will be the ,

i same. The seeding will be done by Dave Bedecker, the tenant. He estimated that the seed will cost between

$150 and $200, and that his labor would be in the neigh-borhood o'f $2,000. Gould told Fichter to make the necessary arrangements to send him a letter to this effect and Gould will reply.

5-22-79 Fichter submits his revisions to the agreement.

' 6-07-79 Revised agreement--mailed to Fichter for signature.

7-27-79 Additional changes made to agreement per Fichter's request and revised copy mailed to Fichter for signature.

t

8-28..79 (approximate) N. Schilling called Fichter re: status of 3- agreement. Fichter said his clients are in the process of signing and would mail to us shortly.

9-04-79 Fichter called and said Killelea had signed and mailed agreements to Nessingers.

9-10-79 Dredging and reshaping of the Run co=pleted.

9-11-79 N. Schilling called Fichter re: status of agreement.

Fichter's reply same as 9-4-79, Fichter wants check sent to him and he will forward K.-N.

9-17-79 Fichter letter to Schilling: Says Nessingers are reluctant to sign the agreement because they want Edison to reimburse them for their attorney's fees and for the land they claim has been lost by erosion.

9-26-79 T.L.G. letter to Fichter: Informs Fichter that Edison will not reimburse K.-N. any further than already agreed to in the settle =ent agreement.

11-28-79 N. Schilling called Fichter's office (Fichter in conference) and left message for Fichter to call back. Re: status of agree =ent.

11-30-79 N. Schilling called Fichter's office (not in office) left message to call. Re: same as 11-28-79.

12-07-75 L. Fichter phoned N. Schilling. Fichter said his cl'ients want to be reimbursed for land they claim was lost due to erosion, plus legal fees they incurred which are attribut-able to the Armstrong Run matter. They will not sign the agreement until they have been reimbursed. Fichter said l

he would advise his clients to sign the agreement and, if they wish, to pursue the reimbursement as a separate issue.

2-14-80 N. Schilling phoned Fichter. Fichter not in. Fichter to return call.

l

2-21-80 Fichter called and said there has not been any progress in regards to tne release. The Nessingers are still refusing to sign.

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Attachment 6 0

Table 4.1. Predicted Peak Discharge (m /s) to Armstrong Run at Site Soundary 3

0 Applicant's Estimate

• Staf f Estimate 100-year, 100-year, 100-year, 10-y ea r, 1-hour 24-hour 24-hour 24-hour Stonn _

9 32 36.93 52.87 Preconstruction 4 34 12.91 18.32 During construction

( 3 25 d 10.68 15.29 Post-construction 8 Applicant's estimate 15 from ER, Supp. 4. Taele 0050.02-1.

b 5taff estimate for preconstruction is based on extrapolation from stream gaging records on Gimlet Creek at Sparland. Illinois, and f rom stem data for Aurora, Illinois. Other staff estirates are based on triangular hydrograph calculations.

CAssuNs dike is constructed but not vegetated.

1. Assums successful vegetation establishmnt on dike.

• Table included in LaSalle County Station FES (NUREG-0486), November ,19 78.

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