Text

Rept on Radioactive Effluent Releases & Waste Disposal, Jan-June 1981
	ML20030C986
Person / Time
Site:	Humboldt Bay
Issue date:	08/27/1981
From:	; PACIFIC GAS & ELECTRIC CO.
To:	;
Shared Package
ML20030C985	List: ML20030C984; ML20030C986; ML20030C988; ML20030C990;
References
	NUDOCS 8108310228
	Download: ML20030C986 (16)
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PACIFIC CAS AND ELECTRIC COMPANY DOCKET h0. 50-133 REPORT ON RADIDACTIVT. EFFLUENT RELEASES AND WASTE DISPOSAL FOR HLMBOLDT BAY POWER PIRiT UNIT NO. 3 COVERING THE PERIOD JANUARY 1, 1981 'DIROUGH JUNE 30, 1981 This report summarizes the quantity of each of the principal radionuclides released to unrestricted areas in liquids and gaseous effluents and summarizes radioactive vaste disposal from January 1, 1981 to June 30, 1981 and is submitted in accordance~vith Section IX.I.3.a. of the Technical Specifications.

A.

SUPPLEMENTAL INFvRMATION r

1.

Regulatory Limits a.

Fission and activation gases: The current license limits 2

are 50,000 $1 per second for an annual average release rate ans 500,000 Wi per second for an instantaneous release.

b.

Iodines: Refer to c., "Particulates."

c.

Particulates: The limit "for halogens and particulate material based on the isotopes present cn the sampling filters after 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months decay period: is 0.18 Wi/sec.

d.

Liquid Effluents: 10CFR20.

2.

Maximum Permissible Concentrations Provide the MPC's used in determining allowable release rates or concentrations.

n.

Fission and activation gases: Not applicable.

b.

Iodines:

3x10-20 gifee Particulates, half-lives >8 days: 3x10 10 $1/cc c.

d.

Liquid effluents: 10CFR20, Table II, Appendix 3.

3.

Average Energy Not applicable.

t 8108310228 810827 PDR ADOCK 05000133 R

PDR l

i

l 6

4.

N7rsurementn rnd Approximations of Tatel R*dicactivity l

The methods used to measure or approximate the total radioactivity in effluents and the methods used to determine radionuclide compositicn are as follows:

a.

Fission and activation gases:

Due to the long decay time since operation (shutdown July 2, 1976), no detectable releases of fission and activation gases can be expected. An arbitrary 1 microcurie of each nuclide found.during operation has been reported.

i b.

Iodines:

Charcoal cartridges are removed from the stack sampling system weekly and, after 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months decay, are gac=a spectrum counted for I-131 and 1-133 (with an Intnnsic Gemaniu:n Lithium detector).

Due to the long decay time since operation, no detectable releases of Iodines have been found. An arbitrary 1 microcurie of each nuclide found during operation has been reported.

c.

Particulates:

Filter papers are removed from the stack sampling system weekly and gross beta counted. An arbitrary 1 microcurie has been reported for BaLa140 and Sr89 due to the long decay time since operation, Selected filters for each quarter are decay counted to determine other particulates (long-lived), alpha emitters, and analyzed for Sr90.

d.

Liquid Effluents:

Waste receiver tank and waste hold tank batch sa=ples were gamma spectrue analyzed and gross beta and gross gamma counted. The nuclides identified account for the gross gamma and the gross beta count.

Laundry waste tanks are individually analyzed only by gross beta and gross gamma counting, and based on the mixture determined above.

A quarterly composite of all batches was analyzed for Sr90, but due to instrument breakdown, Tritium results were conservatively estimated based on prior sampling.

5.

Entch Relocate a.

Liquid:

1)

Number of batch releases: 23 (A total of 3835 gallons of laundry waste and 51,300 gallons of treated waste tank discharge) 2)

Tetal time period for batch releases: 42 hours4.861111e-4 days 0.0117 hours 6.944444e-5 weeks 1.5981e-5 months , 29 m nutes 3)

Maximum t,ime period for a batch release: 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

4)

Average time period for batch releases: 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , 50 minutes 5)

Minimum time period for a batch release: 10 minutes 6)

AveraFe stream flow during periods of release of efflutat into a flowing stream: Not Applicable; Discharge is into Humboldt Bay.

b.

Gaseous: None 6.

Abnormal Releases a.

Liquid:

l)

Number of releases: None 2)

Total activity released: None b.

Gaseous:

1)

Number of releases: None 2)

Total activity released: None B.

GASEOUS EFFLUENTS The monitoring systems associated with the emergency condenser and liquid radwaste system vents to atmosphere indicate that no detectable releases of radioactive gases occurred during the report period.

Therefore, only gaseous radioactive waste releases made via the 250 foot stack are reported.

l Table B-1 summarizes the total quantities of radioactive effluents I

released by quarter. Table B-2 summarizes the total quantities for each of the nuclides determined to be released.

l l

C.

LIQUID EFFLUENTS The activity in each batch of liquid radioactive waste was either in solution at the time of discharge or the batch was filtered prior to discharge. Analysis of weekly composite samples from the plant effluent canal and monitoring by the liquid waste di2 charge monitor confirmed that no unaccounted release of radioactive vaste

~

occurred during the report period.

Table C-1 summarizes the total quantities of radioactive effluents released by quarter. Table C-2 summarizes the total quantity for each of the nuclides determined to be released.

D.

SOLID WASTE During the report period, a total of 84.28 cubic meters of dry compressible vaste, contaminated equipment, etc., totaling 0.546 Ci was shipped. Table D1 summarizes these radioactive waste shipments.

[

E.

EVIlONENIAL ENI'IORIN:i

'Ihe envirtmental radiaticn mmitoring program was continued unchanged during this period. Ibutine quarterly reports, "Envircmental Radiaticn Study in the Vicinity of Hmboldt Bay Pouer Plant (HBPP), Eureka, California", contain the basic radiologic data collected frun the Htznboldt Bay Power Plant envizcms. 'Ihese reports are prepared for and subnitted to several state agencies. 'Ihe latest reports, Nos. 79 and 80, are attached and certain data frun fourth quarter 1980 and first quarter 1981 respectively. 'Ihese quarterly reports describe the sanpling locations, total nunber of samples of each media sanpled, and the neasured radioactivity crncentration in the sanples.

'Ibe types of nwvHa sar: pled are marine flora, fish, and in-vertebraes; lot.Lin sediment; milk; air particulates; and external exposure measured by ion chaThers.

Plant releases ocntinued to be nuch lower than when the plant last operated. The calculated potential public exporures due to the plant releases were very low at that tire. 'Iherefore; potential exposure calculations were determired cnly fran the dosimetry data.

Data fran the first half of 1981 was used for these calculations.

'Ihere are currently 30 dosinetry stations (Fig _a lE) in the vicinity of the plant.

Ionization chambers, read on a bneckly basis, are used for dosinetry. Stations 2 and 5 are cx:nsidered to be back-ground in that they are asstuned to be ccr:pletely renoved frun the influence of the plant.

In order to test for statistically significant difference between stations, two statistical tests (a tw>-way classification, and a 95% mnfidence limit least significant difference test) were made during biweekly dosineter renamgs for each station.

'Ihe following table details results of this analysis. 'Ihe yearly exposure results for each staticn were based on biweekly data extrapolated to cne year and are listed in order frun highest to lowest exposures.

---~

r - - -

o smTISTICAL Awasis a Dosnern dam (FIRST HAIF T 1981) s mTICN MEAN mR/yr 27 3.50 91.0 16 3.39 88.2 14 3.31 ~.-

86.'s 29 3.30 85.8 26 3.28 85.4 20 3.27 85.0 1

3.23 84.0 15 3.22 83.6 23 3.20 83.2 11 3.19 83.0 28 3.19 83.0 9

3.16 82.2 6

3.08 80.2 8

3.08 80.2 17 3.05 79.4 18 3.04 79.1 5

3.02 78.(i Considered Background 22 2.98 77.6 19 2.97 77.2 3

2.96 77.0 4

2.95 76.8 2

2.95 76.6 Ctnsidered Background 13 2.93 76.3 30 2.93 76.2 7

2.90 75.4 21 2.88 75.0 10 2.85 74.0 12 2.84 73.8 24 2.80 72.8 25 2.78 72.2 Isast significant difference between stations means = 0.41 Isast significant difference between replication means = 1.36

F.

METEOROLOGICAL DATA Wind speed and direction and temperature differential are presently recorded on strip charts, but the meteorological data logging system was removed from service in 1967. Therefore, the information specified by Regulatory Guide 1.21, Appendix B, Section F, is not readily available for this report period.

Table F1 summarizes the cumulative joint frequency distribution of wind speed, wind direction, and atmospheric stability for the period April, 1962 thredgh June, 1967 when the meteorologicql data logging system was in service.

9 1

l l

l

TE LE B1 EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT 1981 CASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES Est.

First Second p

Total Quarter Quarter Error 2

A.'

Fission & activation gases 1.

Total release Ci LT 1.10E-5 LT 1.10E-5 2.00E1 2.

L<ea-Za release rate LT 1.40E-6 LT 1.40E-6 for period uCi/sce 3.

Percent of Technical Specification Ifmit LT 2.80E-9 LT2.60E-9 B.

lodines 1.

Total iodine-131 C1 LT 1.00E-6 LT 1.00E-6 1.50El 2.

Average release rate for period II-131) pCi/see LT 1.27E-7 LT 1.27E-7 l

3.

Percent of Technical Specification limit LT7.06E-5 LT7.06E-5 C.

Particulates 1.

Particulates with half-lives >R days Ci 1.44E-5 1.27E-4 1.50E1 2.

Average relcase rate for period pCi/see 1.86E 5 1.62E-5 3.

Percent of Technical 1.03E-2 9.00E-3 Specification limit 4.

Cross alpha radioactivity Ci LT 2.27E-6 LT 9.44E-6l D.

Tritium l

1.

Total release Ci LT 1.00E-2 LT 1.00E-2 5.00E1 1

2.

Average release rate for period pCi/sce LT 1.27E-3 LT 1.27E-3

C TABLE B2 EFFLUENT AND WASTE DISPOSAL SDilANNUAL REPORT 1981 CASEOUS EFFLUENTS - ELEVATED RELEASE Continuous Mode Nuclides Released l Unit First Second I

Quarter Ouarter 1.

Fission gases

~

krypton-83M Ci LT1.00E-6**

LT1.00E-6**i krypton-89 Ci LT1.00E-6**

LT1.00E-6**

_ krypton-85M Ci LT1.00E-6**

LT1.00E-6**

_ krypton-87 Ci LT1.00E-6**

LT1.00E-6**

_ krypton-88 Ci LT1.00E-6**

LT1.00E-6**

xenon-133 Ci LT1.00E-6**

LT1.00E-6**

xenon-135 Ci LT1.00E-6**

LT1.00E-6**

xenon-135m Ci LT1.00E-6**

LT1.00E-6**

xenon-138 Ci LT1.00E-6**

LT1. 00E-6 *

xenon-137 Ci LT1.00E-6**

LT1.00E-6*a xenon-133m Ci LT1.00E-6**

LT1.00E-6**

Total for period Cf LT 1.10E-5 LT 1.10E-5 2.

Iodines iodine-131 Ci LT1.00E-6**

3T1.00E-6**

fodine-133 Ci LT1.00E-6**

LT1.00E-6**

iodine-135 Ci LT1.00E-6**

LT1.00E-6**

Total for period Ci LT3.00E-6 LT3.00E-6 3.

Particulates

_ strontium-89 Ci LT1.00E-6**

LT1.00E-6**

strontium-90 Ci 9.15E-7 A.38E-7 cesium-134 Ci LT 3.00E-6*

LT 3.00E-b*

cesium-137 C1 2.84E-5 2.38E-5 barium-lanthanum-140 Ci LT1.00E-6**

LT1. 00 E-6 *

cobalt-69 Ci 1.00E-4 5.74E-5 mangan'.se-54 Ci LTS.00E-6*

LT2.00E-5*

_cer'am-144 Ci LTS.00E-6*

LT2.00E-5*

~'The minimum sensitivity of the plant s'pectrometer system for a particular nuclide depends upon the mixture of nuclides present in each batch, therefore, some nuclides not detected could be present at leve!

comparable to those detected. Those nuclides expected to be present, but not detected, are reported "Less Than" (LT) typical quarter Curie maximum quantities.

- No release was detected due to the decay time since the Unit was shutdown on July 2, 1976. Quantities reported arc on arbitrary 1 micro-curie.

TABLE Cl EFFLUENT AND WASTE DISPOSAL SEMIANNUAL P.EPORT 1981 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES Est.

First Second Total Unit Quarter Quarter Error A.'

Fission and activation products l.

Total release (not including tritium, gases, alpha)

Ci 7.05E-2 9.96E-3 1.50El 2.

Average diluted concentra-2.91E-9 6.3SE-10 tion during period UCi/ml 3.

Fercent of applicable limit 1.63E-2 3.99E-3 B.

Tritium 1.

Total release Ci LT8.60E-2 LT1.84E-2 4.00E0 2.

Average diluted concentra-LT3.55E-9 LT1.18E-9 tion during period pCi/ml 3.

Percent of applicable limit LT1.18E-4 LT3.93E-5 f

C.

Dissolved and entrained gases 1.

Total release Ci LT2.00E-6 LT2.00E-6 5.00El D.

Cross alpha radioactivity 1.

Total release Ci LT2.57E-4 LT2.85E-4 7.50E' E.

Volume of waste released (prior to dilution) liter 1.72E5 3.6SE4 5.00E0 i

F.

Volume of dilution water used during period liter 2.42E10 1.56E10 5.00E0 l

l

TABLE C2 EFFLUENT AND WASTE DISPOSAL SDilANNUAL REPORT 1981 LIQUID EFFLUENTS Batch mode Nuclidts Released Unit First Seccnd Quarter Quarter serontium-89 Ci LT_1.00E-6**

LT1.00E-6**

strontium-90 Ci 1.16E-4e 3.05F,5 cesium-134 Ci 4.32E-1 4.75E-4 cesium-137 Ci 5.36E-2

'9.05E-3 iodine-131 C1 LT1.00E-6**

LT1.00E-6**

cobalt-58 Ci LT1.00E-6**

LT1.00E-6**

cobalt-60 Ci 1.21E-2 3.92E-4 zine-65 Ci LT1.n0E-6 LT1.00E-6 manganese-54 C1 3.27E-4 4.00E-6 chromium-51 Ci LT1.00E-6**

LT1.00E-6**

zirconium-niobium-95 Ci LT1.00E-6**

LT1.00E-6**

molybdenum-99 Ci LT1.00E-6**

LT1.00E-6**

technetium-99=

Ci LT1.00E-6**

LT1.00E-6**

barium-lanthanum-140 Ci LT1.00E-6**

LT1.00E-6**

cerium-144

~

ci LT1.00E-6*

LT1.00E-6*

neptunium-239 Ci LT1.00E-6**

LT1.UUE-baa l

l l

I Total for period (above) l Ci l 7.05E-2 l

9.96E-3 l

xenon-133 Ci LT1.00E-6**

LT1.00E-6**

xenon-135 Ci LT1.00E-6**

LIl.00E-6**

~

The minimum sensitivity of the plant's spectrometer system for a particular nuclide depends upon the mixture of nuclides present in each batch, therefore, some nuclides not detected could be present l

st levels coupa able to those detected. Those nuclides expected to be present, but not detected, are reported "Less Than" (LT) typical quarter Curie maximum quantities.

- No release was detected due to the decay time since the unit was shutdown on July 2, 1976. Quantities reported are an arbitrary 1 micro-curie.

. ~...

_g...._-..---

x.

~

TABLE D1 l

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF OF 1981 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. Solid Waste Shipped Offsite for Burial or Disposal (not irradiated fuel)

'Est.

1.

Type of Waste Unit Quantity Total Error a.

Solidified evaporator bottoms m3 None and solidified demineralizer resins C1 3

b.

Dry compressible vaste, m

8.43El 1.00E1 contaminated equip., etc.

Ci 5.46E-1 2.50E1 2.

Estimate of major nuclide composition (by type of waste) a.

Cesium-134 Cesium-137 Unidentified Mixed g

Fission Products Cobalt-60

, Manganese-54 b.

Cesium-134 2.33E0 Cesium-137 5.J1El Unidentified Mixed 3.56E0 g

Fission Products Cobsic-60 4.28El Manganese-54 9.16E-2 3.

Solid Waste Disposition Number of Shipments Mode of Transportation Destination 3

Truck (Sole Usc)

Richland, Washington B.

Irradiated Fuel Shipments (Disposition)

Number of Shipments Mode of Transportatien None

TAptE F1 PERCENT OF PERIOD AT EACH WIND SPEED AND DIRECTION

~

PERIOD OF RECORD: April, 1962 through June 1967 STABILITY CLASS:

C ELEVATION:

255 feet Wind Speid (mph) at 76m Level Wind Direction (0) 0-3 4-7 B-12 13-18 19-24 324 Total l 0.

0.02 0.56 0.05 0.03 0.02 0.01 0.20

~

10.00 0.02 0.03 0.04 0.03 0.01 0.00 0.13 20.00 0.03 0.03 0.01 0.01 0.00 0.00 0.03 30.00 0.02 0.02 0.00

,0.00 0.00 0.00 0.04 40.00 0.00 0.01 0.00 0.01 0.00 0.00 0.02 50.00 0.01 0.01 0.00 0.00 0.00 0.00 0.02 60.00 0.01 0.01 0.00 0.00 0.00 0.00 0.03 70.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 80.00 0.01 0.00 0.00 0.00 0.00 0.00 0.01 90.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 100.00 0.00 0.00 0.00 0.00 0.'00 0.00 0.00 110.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 120.00 0.01 0.01 0.01 0.00 0.00 0.00 0.03 130.00 0.01 0.01 0.00 0.01 0.00 0.00 0.03 140.00 0,.00 0.01 0.01 0.00 0.01 0.00 0.02 150.00 0.00 0.01 0.01 0.02 0.01 0.00 0.06 160.00 0.00 0.01 0.01 0.01 0.01 0.00 0.04 170.00 0.00 0.00 0.02 0.02 0.01 0.01 0.07 180.00 0.00 0.01 0.02 0.02 0.00 0.00 0.05 190.00 0.01 0.01 0.01 0.01 0.01 0.00 0.04 200.00 0.00 0.02 0.02 0.02 0.00 0.01 0.09 210.00 0.02 0.03 0.06' O.02 0.01 0.00 0.13 220.00 0.01 0.02

0.08 0.04 0.03 0.02 0.19 230.00 0.01 0.06 0.12 0.14 0.05 0.02 0.39 240.00

.,0.01 0.09 0.22 0.15 0.02 0.03 0.51 250.00 0.02 0.18 0.26 0.10 0.02 0.00 0.55 260.00 0.02 0.13 0.24 0.04 0.01 0.00 0.44 270.00 0.02 0.16 0.22 0.02 0.01 0.00 0.42 280.00 0.02 0.13 0.11 0.01 0.00 0.00 0.27 290.00 0.02 0.10 0.10 0.01 0.01 0.00 0.24 300.00 0.01 0.09 0.06 0.00 0.00 0.00 0.15 310.00 0.01 0.04 0.06 0.01 0.00 0.00 0.12 2.20.00 0.01 0.03 0103 0.01 0.01 0.01 0.12 330.00 0.01 0.03

.03 0.01 0.02 0.01 0.11 340.00 0.01 0.04 0.04 0.03 0.02 0.01 0.15 350.00 0.01 0.02 0.06 0.07 0.05 0.01 0.22 I

Rovs may not sum to exact total doe to rounding of f.

I

.a

---.--a-,

n.

...,,,..,-_.,.-,.,,..-,,n,.,n

TABIE F1 (cont)

PERCENT T PERIOD AT EADI WIND SPEED AND DIRDCTIO1 PERICD T RD00RD: April 1962 through June 1967 STABIIJTY CLASS: D EILVATICN: 250 feet Wind Speed (nph) at 76m leve,1 Direction 0-3 4-7

,-8-12 13-18 19-24

>24 Total 0.00 0.11 0.34 0.78 0.85 0.49 0.48 3.05 10.00 0.04 0.27 0.52 0.46 0.38 0.27 1.95 20.00 0.05 0.21 0.32 0.19 0.16 0.11 1.04 30.00 0.06 0.20 0.16 0.08 0.03 0.04 0.58 40.00 0.05 0.11 0.05 0.02 0.00 0.01 0.23 50.00 0.03 0.05 0.08 0.00 0.01 0.00 0.16 60.00 0.04 0.08 0.04 0.00 0.00 0.00 0.15 70.00 0.04 0.02 0.01 0.01 0.00 0.00 0.08 80.00 0.02 0.04 0.00 0.01 0.00 0.00 0.07 90.00 0.01 0.04 0.03 0.00 0.00 0.00 0.09 100.00 0.02 0.01 0.02 0.00 0.00 0.00 0.05 110.00 0.00 0.03 0.01 0.01 C 31 0.00 0.06 120.00 0.02 0.03 0.03 0.02 0.01 0.00 0.11 130.00 0.01 0.03 0.02 0.02 0.01 0.00 0.10 140.00 0.02 0.03 0.02 0.04 0.01 0.01 0.13 150.00 0.03 0.03 0.03 0.09 0.03 0.02 0.23 160.00 0.01 0.04 0.05 0.10 0.04 0.01 0.26 l

170.00 0.02 0.05 0.12 0.16 0.04 0.01 0.40 l

18C.00 0.04 0.08 0.12 0.13 0.03 0.01 0.40 8

190.00 0.02 0.07 0.09 0.06 0.03 0.02 0.28 200.00 0.05 0.10 0.17 0.11 0.02 0.01 0.46 210.00 0.05 0.12 0.20 0.08 0.04 0.01 0.51 220.00 0.05 0.14 0.14 0.12 0.05 0.02 0.51 230.00 0.03 0.14 0.17 0.11 0.06 0.02 0.53 240.00 0.08 0.22 0.21 0.06 0.03 0.01 0.61 l

250.00 0.08 0.17 0.13 0.04 0.01 0.00 0.43 260.00 0.08 0.22 0.13 0.G2 0.01 0.00 0.47 l

270.00 0.12 0.21 0.11 0.03 0.01 0.00 0.49 280.00 0.05 0.20 0.11 0.04 0.00 0.00 0.40 290.00 0.04 0.22 0.11 0.02 0.00 0.00 0.39 300.00 0.10 0.21 0.20 0.02 0.01 0.00 0.53 310.00 0.08 0.28 0.19 0.03 0.02 0.01 0.60 320.00 0.07 0.25 0.33 0.09 0.04 0.01 0.80 330.00 0.06 0.21 0.35 0.16 0.09 0.03 0.90 340.00 0.07 0.24 0.50 0.47 0.17 0.08 1.53 350.00 0.07 0.30 0.82 0.86 0.49 0.33 2.87 I

O

TABLE F1 (cont)

PERCENT OF PERIOD AT EACil WIND SI'EED AND DIRECTION PERIOD OF RECORD:

April 1962 through June 1967 STABILIIT CLASS:

E ELEVATION:

250 feet Wind Speed (mph) at 76m Level Wind Direction 0-3 4-7 H-12 13-18 19-24

>24

_To _t_._

0.00 1.04 1.06 2.00 3.84 0.82 O.10 6.BC 10.00 0.17 0.80 1.55 0.90 0.36

0. h 3.75 20.00 0.30 0.83 1.26 0.47 0.13 0.00 2.95 30.00 0.37 0.73 0.64 0.19 0.01 0.00 1.9' 40.00 0.21 0.60 0.47 0.02 0.00 0.00 1.31 50.00 0.18 0.56 0.28 0.02 0.00 0.00 1.05 60.00 0.21 0.54 0.19 0.00 0.00 0.00 0.93 70.00 0.19 0.44 0.07 0.'00 0.00 0.00 0.81 80.00 0.20 0.41 0.07 0.00 0.00 0.00 0.6e 90.00 0.27 0.47 0.17 0.01 0.00 0.00 0.B2 100.00 0.17 0.24 0.06 0.01 0.00 0.00 0.49 110.00 0.20 0.31 0.10 0.00 0.00 0.00 0.60 120.00 0.18 0.31 0.19 0.01 0.02 0.00 0.70 130.00 0.14 0.25 0.09 0.08 0.03 0.03 0.72 140.00 0.09 0.22 0.21 0.23 0.22 0.25 1~. 21 150.,00 0.09 0.24 0.22 0.45 0.52 0.46 2.0E 160.00 0.05 0.22 0.25 0.62 0.44 0.21 1.75 170.00 0.04 0.26 0.43 0.73 0.23 0.09 1.89 180.00 0.26 0.32' O.45 0.43 0.20 0.02 1.77 190.00 0.15 0.26 0.37 0.35 0.15 0.02 1.20 200.00 0.22 0.48 0.47 0.26 0.18 0.06 1.77 210.00 0.20 0.44

,0.58 0.38 0.05 0.04 1.60 220.00 0.20 0.40 0.55 0.15 0.14 0.03 1.37 230.00 0.23 0.43 0.40 0.14 0.13 0.05 1.39 240.00

- 0.24 0.39 0.23 0.15 0.13 0.01 1.24 250.00 0.21 0.32 0.16 0.03 0.01 0.01 0.84 260.00 0.24 0.31 0.17 0.03 0.00 0.00 0.85 270.00 0.35 0.35 0.13 0.12 0.01 0.00 0.97 280.00 0.19 0.30 0.15 0.01 0.01 0.01 0.67 290.00 0.19 0.33 0.17 0.01 0.01 0.01 0.El 300.00 0.21 0.37 0.16 0.01 0.00 0.01 0.EE 310.00 0.20 0.47 0.29 0.02 0.00 0.00 0.9C 320.00 0.20 0.59

0. 65 0.12 0.01 0.05 1 72 330.00 0.22 0.87 0.98 0.35 0.02 0.02 2.45 340.00 0.20 0.88 1.55 0.74 0.01 0.00 3 48 350.00 0.19 1.02 2.02 1.41 0.55 0.33 5.22 4

i*.'.,"*

TABLE v1

=

PERCENT OF PERIOD AT EACil WIND SPr.ED AND DIRECTION PERIOD OF RECORD: April 1962 through Junc'1967 STABILITY CLASS:

F

.. ELEVATION:

250 feet Wind Speed (mph) at 76m Level Wind Direction 0-3 4-7 8-12 13-18 19-24

, 24 Tote:

0.00 0.42 0.08 0.03 0.00 0.00 0.00 0.53 10.00 0.05 0.06 0.05 0.01 0.00 0.00 0.18 20.00 0.05 0.09 0.08 0.03 0.00 0.00 0.24 30.00 0.12 0.11 0.10 0.04 0.00 0.00 0.37 40.00 0.07 0.13 0.10 0.03 0.01 0.00 0.34 50.00 0.09 0.13 0.06 0.00 0.00 0.00 0.27 60.00 0.14 0.19 0.07 0.01 0.00 0.00 0.40 70.00 0.11 0.22 0.08 0.00 0.00 0.00 0.40 80.00 0.10 0.22 0.07 0.00 0.00 0.00 0.39 90.00 0.34 0.25 0.07 0.00 0.00 0.00 0.46 100.00 0.11 0.29 0.09 0.01 0.01 0.00 0.51 110.00 0.13 0.31 0.13 0.02 0.00 0.00 0.59 120 00 0.15 0.33 0.18 0.03 0.00 0.00 0.69 130.00 0.10 0.23 0.14 0.02 0.00 0.00 0.50 140.00 0.10 0.22 0.11 0.09 0.02 0.00 0.54 150.00 0.12 0.19 0.10 0.07 0.03 0.02 0.52 160.00 0.08 0.15 0.16 0.08 0.01 0.00 0.47 170.00 0.07 0.15 0.14 0.07 0.00 0.00 0.43 180.00 0.16 0.26 0.13 0.02 0.00 0.00 0.56 190.00 0.12 0.18 0.13,

0.02 0.00 0.01 0.46 200.00 0.13 0.25

,0.18 0.02 0.00 0.00 0.55 210.00 0.18 0.32 0.20 0.02 0.00 0.01 0.73 220.00 0.14 0.28 0.09 0.02 0.00 0.00 0.54 230.00 0.18 0.24 0.07 0.01 0.01 0.00 0.50 240.00 0.19 0.19 0.05 0.02 0.00 0.00 0.45 250.00 0.15 0.16 0.01 0.00 0.00 0.00 0.32 260.00 0.17 0.10 0.01 0.00 0.00 0.00 0.29 270.00 0.18 0.09 0.01 0.00 0.00 0.00 0.28 280.00 0.10 0.04 0.01 0.00 0.00 0.00 0.15 290.00 0.11 0.05 0.01 0.00 0.00 0.00 0.16 300.00 0.13 0.07 0.00 0.00 0.00 0.00 0.19 310.00 0.07 0.05 0.01 0.00 0.00 0.00 0.13 320.00 0.09 0.05 0.03 -

'O.00 0.00 0.00 0.17 330.00 0.09 0.09 0.01 0.00 0.00 0.00 0.19 0.20 340.00 0.06 0.10 0.03 0.01 0.00 0.00 350.00 0.07 0.09 0.05

0.01 0.00 0.00 0.2)

.. - +.

, -.,.,

ML20030C986

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