HBL-90-012, Semiannual Radioactive Effluent Release Rept Jul-Dec 1989
| ML20055C380 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay |
| Issue date: | 12/31/1989 |
| From: | Womack L PACIFIC GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| HBL-90-012, HBL-90-12, NUDOCS 9003080074 | |
| Download: ML20055C380 (17) | |
Text
-_
' acHicias and Electric Company 77 Beale Street t.wence F.Womack P
San Ftancr3co, CA 94106 Manager j
4157972 4758 Nuclear Opetatons Sappst l
March 1, 1990 f
I t
PG&E Letter No. HBL-90-012 U.S. Nuclear Regulatory Commission l
ATTN: Document Control Desk Hashington, D.C.
20555 Re: Docket No. 50-133, OL-DPR-7 Humboldt Bay Power Plant. Unit 3 Semlannual Radioactive Effluent Report Gentlemen:
Enclosed is the Humboldt' Bay Power Plant Unit 3 " Report on Radioactive Effluent Releases and Haste Disposal" covering the period from July 1, 1989, through December 31, 1989. This report is required by Section VII.H.3. of the Humboldt Bay Unit 3 Technical Specifications and 10 CFR 50.36a(a)(2).
Kindly acknowledge receipt of this material on the enclosed. copy of this letter and return it in the enclosed addressed envelope.
Sincerely, L. F. Homack cc:
P. Anderson E. Bailey D. E. Martin J. B. Martin D. J. Homeldorf Humboldt Distribution Humboldt Service List Enclosure 3090S/0079K/ENG/1052 l-QW
~
EM8 L
w
.-. -.. -. - - ~ -
PGLE Letter No. N8L-90-012 l
i i
i l
1 i
~
ENCLOSURE l
HUM 8OLDT BAY POMER PLANT UNIT 3 i
SEMIANNUAL RADI0 ACTIVE l
EFFLUENT RELEASE REPORT 1
July 1.1989 through December 31, 1989
~
l l
3090$/0079K s
,,... ~,,,,
i t
i
?
PACIFIC GAS AND ELECTRIC COMPANY f
DOCKET NO. 50-133 t
LICENSE NO. DPR-7 t
RADIDACTIVE EFFLUENT RELEASES AND MASTE DISPOSAL FROM HUM 80LDT BAY POMER PLANT UNIT 3, COVERING THE PERIOD j
JULY 1, 1989 THROUGH DECEM8ER 31, 1989 l
i This report summarizes the quantity of each of the principal radionuclid' es j
released in liquid and gaseous effluents to unrestricted areas and summarizes i
I radioactive waste disposal from July 1, 1989 through December 31, 1989. This j
l report is required by Section VII.H.3 of the Humboldt Bay Power Plant Unit 3 e
Technical Specifications.
A.
SUPPLEMENTAL INFORMATION 1.
Regulatory Limits a.
Fission and activation gases:
The regulatory release rate limit is based on the appropriate Maximum Permissible Concentrations from 10 CFR 20, divided by a dispersion factor of 1.4E-6 seconds per cubic meter (determined to be the annual average dispersion factor for the sector with the least atmospheric dispersion).
i b.
Due to the long decay time since the Unit was last l
1 operated (July 2, 1976), no detectable releases of radioactive iodines are expected.. Therefore, the license does not define a corresponding release rate limit.
1 c.
Particulates: -The regulatory relee.se rate limit is based on the t
appropriate Maximum Permissible Concentrations from 10 CFR 20, l
divided by a dispersion factor of 1.4E-6 seconds.per cubic meter i
(determined to be the annual average dispersion factor for the' sector with the least atmospheric dispersion).
d.
Liquid effluents: 10 CFR 20.
Y
.4 3090S/0079K m
2.
Maximus Permissible Concentrations The concentrations used to determine allowable release rates or allowable concentrations are as follows:
a.
Gaseous effluents:
(1) Fission and activation gases: 10 CFR 20. Appendix B.
Table II.
(2) Iodines: Not applicable.
(3) Particulates (with half-lives >B days): 10 CFR 20. Appendix B. Table II.
b.
Liquid effluents: 10 CFR 20 Appendix 8. Table II, 3.
Average energy.
Not applicable.
4.. Measurements and Approximations of Total Radioactivity The methods used to measure or approximate the total radioactivity in effluents and to determine radionuclide composition are as follows:
a.
Fission and activation gases: The gaseous activity released from the riant vent is monitored by an off-line monitor equipped with a tRta scintillator. Due to the long decay time since operation (shutdown July 2. 1976), no detectable releases of short half-life fission and activation gases can be expected.
Accordingly, these radionuclides are not reported. The "less than" value for Kr-85 is based on the estimated sensitivity of the stack Kr-85 sonitor.
b.
Iodines: Due to the long decay time since operation (shutdown.
July 2, 1976), no detectable releases of radioactive iodines of plant origin can be expected. Since the license does not require that these radionuclides be monitored, these radionuclides are not reported.
c.
Particulates:
Radioactive particulates released from the plant vent are monitored by continuous sample collection on particulate filters. Filter papers are removed from the stack sampling system weekly. After decaying 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, they are analyzed for gross alpha _(internal proportional counter) and for the concentration of gamma-omitting nuclides (intrinsic eraanium detector). All statistically significant peaks are fdentified.Thefiltersforeachquarterareanalyzedfor radioactive strontium-90 (the only strontium present).
3090S/0079K.
The estirated error of the reported particulate release values is based on uncertainty in sample flow rate, stack flow rate, detector calibration, and typical sample counting statistics.
d.
Liquid effluents: Liquid waste batch samples were counted for gamma spectrum and gross beta radioactivity. All statistically important peaks were identified. Quarterly composites of all batches were analyzed for gross alpha, tritium, and radioactive strontium (Sr-90).
The error of the reported release values is estimated based on uncertainty in sample volume, batch volume, detector calibration, and typical sample counting statistics.
5.
Batch releases a.
Liquid (1) Number of batch releases: 6 (2) Total time period for batch releases: 1.50E3 minutes (3) Average time period for a batch release: 2.50E2 minutes (4) Maximum time period for a batch release: 2.72E2 minutes (5) Minimum time period for a batch release: 2.17E2 minutes (6) Average stream flow during periods of release of effluents into a flowin Humboldt Bay)g stream: Not applicable (discharge is into b.
Gaseous: None 6.
Abnormal releases a.
Liquid (1) Number of releases: None (2) Total activity released: None b.
Gaseous (1) Number of releases: None (2) Total activity released: None 3090S/0079K B.
GASEOUS EFFLUENTS All ventilation exhausts and system vents are routed to the exhaust stack.
Table B1 summarizes the total quantities of gaseous radioactive effluents released by quarter. Table B2 summarizes the total quantities for each of the nuclides determined to be released.
C.
LIQUID EFFLUENTS All normal liquid releases were collected, filtered, and analyzed before discharge (on a batch basis) through the liquid radwaste process monitor. Analysis of weekly composite samples from the plant intake and the plant effluent canal did not detect any additional release of radioactive liquids during tne report period.
Table C1 summarizes the total quantities of radioactive liquid effluents released by quarter.
Table C2 summarizes the total quantity for each of the nuclides determined to be released.
D.
SOLID WASTE No radioactive solid waste was shipped for disposal during the report period.
E.
RADIOLOGICAL IMPACT ON MAN A comparison of calculated doses from various paths has shown that the off-site doses are primarily due to direct radiation and to the consumption of aquatic foods. Maximum doses to individuals are summarized in Table E1. These doses comply with 40 CFR 190 since there are no other fuel cycle facilities within 8 km.
1.
Doses to the average individual in the population from all receiving-water-related pathways were calculated for releases, based on the guidance of Regulatory Guide 1.109. The results were 0.003 mrom/yr (total body) for the Adult age group, and 0.004 aren/yr for the bone of the Child age proup.
4 3090S/0079K _ _. - _ _
4 I
- l 2.
Total body doses to the average individual in the population from i
1 gaseout effluents to a distance of 50 miles from the site are not significant. For comparison, a conservative calculation (with the same dispersion and deposition parameters as were used to calculate i
maximum exposure) resulted in total body exposures of less than 0.005 aren/yr.
l l
3.
Total body doses (to the average individual in unrestricted areas from direct radiation from the facility) are based o:) TLD results of stations at the site boundary, using the' shoreline occupancy factors given in Regulatory Guide 1.109 for the highest average potential individual (Teen age group). For this group, direct radiation would I
result in an exposure of less than 0.01 area /yr.
F.
METEOROLOGICAL DATA f
i The meteorological data logging system was removed from service in 1967.
[
Therefore, the information specified by Regulatory. Guide 1.21 Appendix l
B. Section F, is not available.
l Table F1 summartres the cumulative joint frequency distribution of wind-l 4
speed, direction, and atmospheric stability for the period April 1962 4
through June 1967, when the meteorlogical data logging system was in service.
i f
i l
i i
l i
l s
i W
l L
i 3090S/0079K !
j l
i
TA8LE 81 EFFLUENT AND NASTE DISPOSAL SEMIANNUAL REPORT - 1989 GASEQUS EFFLUENTS - SU MATION OF ALL RELEASES UNIT THIRD FOURTH EST.' TOTAL QUARTER QUARTER 1RBQR.1_
A.. FISSION GASES
- 1. Total Release Ci (1.59El
<1.61El 5.00E1
- 2. Average Release micro-Ci Rate for Period per sec.
<2.05E0
<2.05E0 g
- 3. Percent of M
applicable limit 1
(9.58E-4 (9.58E-4 B. 10 DINES
- 1. Total Release C1
- 2. Average Release micro-Ci
.g Rate for Period per sec.
g
- 3. Percent of applicable limit C. PARTICULATES
- 1. Total with Half-11ves>8 Days C1 4.47E-6 7.21E-6 3.00E1
- 2. Average Release alcro-Ci Rate for Period per sec.-
S.75E-7
-9.17E-7
- 3. Percent of
^
applicable limit 1
9.76E-3 1.36E-2
- 3. Applicable limit micro-Ci (Mixture MPC) per ec 2.81E-10 3.02E-10 m
- 4. Gross Alpha
.El Radioactivity Ci 7.87E-7 1.51E-6
[ l D. TRITIUM d[1
- 1. Total Release C1
<9.SOE-3 (9.91E-3 5.00E1 1
- 2. Average Release micro-Ci Rate for Period per sec.
<1.26E-3
<1.26E-3 v
Note: **No release can be expected due to decay time since shutdown (July 2,1976). Accordingly, no release is reported.
30905/0079K..
h-
TABLE B2 EFFLUENT AND NASTE DISPOSAL SEMIANNUAL REPORT - 1989 CASE 00$ EFFLUENTS - ELEVATED RELEASES - CONTINUQUS MODE NUCLIDES RELEASED UNIT THIRD FOURTH 00ARTER M1ARTER A. FIS$10N GASES Krypton-85 C1 (l.59El
<1.61El Unidentified Ci Total. for period C1
<1.59El (1.61El
- 8. 100!NES Unidentified C1 Total for period Ci C. PARTICULATES Strontium-89 Ci Strontium-90 Ci (8.30E-8
<1.31E-7 Cesium-134 Ci
<3.91E-6
<3.71E-6 Cesium-137 Ci 8.67E-7 2.73E-6 Cobalt-60 C1 3.60E-6 4.48E-6 Unidentified Ci
<3.91E-6
<3.71E-6 Total for period C1 4.47E-6 7.21E-6 Note: "No release can be expected due to decay time since shutdown (July 2, 1976). Accordingly, no release is reported.
9 4
3090S/0079K 4
.____.__.-_~-_-_._.l____.
^
i 1
I TABLE C1 EFFLUENT AND NASTE DISPOSAL SEMIANNUAL REPORT - 1989 LIQUID EFFLUENTS - SumATION OF ALL RELEASES UNIT THIRD FCURTH EST.' TOTAL l
GlARTER SIARTER ERROR. 1.
]
l A. FISSION AND ACTIVATION PRODUCTS l
- 1. Total release (not including tritium, gases, or alpha)
C1 1.23E-3 2.66E-3 1.50E1 i
- 2. Avera9e diluted concentration micro-Ci during period per al 8.04E-11 1.42E-10
- 3. Percent of i
applicable limit 1
1.09E-3 2.12E-3
- 4. Applicable limit micro-01 i
(Mixture NPC) per al 7.47E-6 6.70E-6 B. TRITIUM
- 1. Total Release C1 6.66E-5 6.54E-4 1.50E1
- 2. Average diluted l
concentration micro-Ci during period per el 4.35E-12 3.50E-11
- 3. Percent of applicable limit 1
1.45E-7 1.17E-6 C. DISSOLVED AND ENTRAINED GASES
- 1. Total Release Ci i
D. GROSS ALPHA RADI0 ACTIVITY I. Total Release Ci (2.49E-6
<2.74E 2.00E1 4
I E. Volume of waste i
released (prior to dilution) liters 4.86E4 9.56E4 1.00E1 1
F. Volume of dilution 4
i water 'used during
[
period
-liters 71.53E10 1.87E10-1.50E1 l.
l' Note: **No release can be expected due to decay time shee shutdown Q uly 2, 1976). Accordingly, no release is r 4crted.
f, 3090S/0079K,
.b A'
m r
..A w* 4
-.M'.
,m.,
.,..f,
,._,,,,y
TABLE C2 EFFLUENT AND WASTE DISPOSAL SENIANNUAL REPORT - 1989 LIQUID EFFLUENTS - BATCH MODE MUCLIDES RELEASED UNIT THIRD FOURTH 00ARTER QUARTER Strontium-89 Ci Strontium-90 Ci 3.22E-5 8.38E-5 Cesium-134 Ci 6.35E-6 6.35E-6 Cesium-137 C1 1.17E-3 2.33E-3 Cobalt-60 C1 2.12E-5 2.35E-4 Unidentified Ci
<1.33E-6
<2.17E-6 Total for period C1 1.23E-3 2.66E-3 Xenon-133 Ci Xenon-135 C1
~
Note: **No release can be expected due to decay time since shutdown (July 2, 1976). Accordingly, no release is reported.
3090!!0079K j
i TABLE D1 EFFLUENT AND MASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 0F 1989 SOLID MASTE AND IRRADIATED FUEL SNIPMENTS A. SOLID MASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not irradiated fuel)
- 1. TYPE OF MASTE UNIT 6-MONTH EST. TOTAL PERIOD ERROR 1
- a. Spent resins, filter Cubic sludges, evaporator Meter Nono bottoms, etc.
C1 None
- b. Dry compressible Cubic waste, contaminated Meter Mone equipment, etc.
Ci None
- c. Irradiated components Cubic control rods, etc.
Meter None Ci None 1,
- d. Other (absorbed Cubic 4
liquids)
Meter None Ci None
- 2. Estimate of major nuclide cosposition (by type of waste).
None l
- 3. Solid Maste Disposition:
I platBER OF_ SHIPMENTS MDDE OF TRANSPORTATION DESTINATION None
- 8. IRRADIATED FUEL SHliMENTS (Disposition)
NUMBER OF SNIPMENTS NODE OF TRANSPORTATION DESTINATION None 30905/0079K,
i i ni sii iiiimeiW
I 1
4 TABLE El EFFLUENT AND ESTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 0F 1989 MAXIRM 0FF-SITE DOSES AND 00SE COIMITHENTS TO MEMBERS OF THE PUBLIC l
ANNUAL DOSE, MILLIREM (9)
First Second. Third Fourth Four Quarter Quarter Quarter Quarter Quarter tource 1989 1989 lett 1989 Averaae
<0.01(6) 0.01(6) (0.01(6) 0.01(6) 0.01 Linuid Effluents (1) <0.01(7) 0.02fE)._0.01(7) 0.02f7) 0.02 i
Airborne Effluents (0.01(8) <0.01(8) (0.01(d) (0.01(8) <0.01(8)
Indines In Particulates (2) 0.01(7) <0.01(7) <0.01(7) <0.01(7) <0.01(7) l Noble Gates (3)
Direct Radiation (4) <0.01 0.02
<0.01 0.01 0.01 1
Notes: 1. Maximum total body and organ doses to individuals in unrestricted areas from receiving-water-related exposure pathways have been caleulated for
+
i 11guld releases based on the average concentrations for the report l
period, followinC the applicable portions < of Regulatory Guide 1.109.
l
- 2. Maximum total body and organ doses to individuals in unrestricted areas l
from airborne-particulate-related exposure pathways have been l
calculated for airborne particulate releases based on the average i
concentrations for the report period, following the applicable portions of Regulatory Guide 1.109.
i
- 3. Total body and skin doses to potentially exposed individuals l
located at the point of maximum offsite ground-level concen-e i
trations of radioactive gaseous effluents were not calculated because there were no detected releases of radioactive noble
[
gases, and because the doses would be less than 0.005 mrom/yr at the level at which the releases could be detected.
- 4. Total body doses (to the maximum individual in the population) are based on TLD results of stations at the site boundary, using i
the shoreline occupancy factors givc3 in Regulatory Guide 1.139 j
for the maximum potential individual (Teen age group).
- 5. Liver (Teen age group).
l
- 6. Total body (Adult age group).
l
- 7. Bone (Child age group).
- 8. Total body (Child age group).
i
- 9. The dose shown for each quarter is calculated on an ac.nual basis for four identical quarters.
ii 3090S/00798: 1 l
. ~
_.._,._m
.m_,
m--,
,._m.~.,_.,.,~.._-,._.
TA8LE F1 PERCENT OF TIME FOR EACH WIND $ PEED AND DIRECTION FOR THE PERIOD APRIL 1962 THROUGH JUNE 1967 RECORDED AT THE 250 FOOT ELEVATION STABILITY CLA$$: PASQUILL 'C' WIND MIND $ PEED (MPH)
DIRECTION (DEGREES) 0-3 4-7 B-12 13 19-24
>24 Total 0
0.02 0.06 0.05 0.03 0.02 0.01 0.20 10 0.02 0.03 0.04 0.03 0.01 0.00 0.13 20 0.03 0.03 0.01 0.01 0.00 0.00 0.08 30 0.02 0.02 0.00 0.00 0.00 0.00 0.04 40 0.00 0.01 0.00 0.01 0.00 0.00 0.02 50 0.01 0.01 0.00 0.00 0.00 0.00 0.02 60 0.01 0.01 0.00 0.00 0.00 0.00 0.03 70 0.00 0.00 0.00 0.00 0.00 0.00 0.00-80 0.01 0.00 0.00 0.00 0.00 0.00 0.01 90 0.00 0.00 0.00 0.00 0.00 0.00 0.01 100 0.00 0.00 0.00 0.00 0.00 0.00 0.00 110 0.00 0.00 0.00 0.00 0.00 0.00 0.01 120 0.01 0.01 0.01 0.00 0.00 0.00 0.03 130 0.01 0.01 0.00 0.01
'0.00 0.00 0.03' 140 0.00 0.01 0.01 0.00 0.01 0.00 0.02 150 0.00 0.01 0.01 0.02 0.01 0.00 0.06 160 0.00 0.01 0.01 0.01 0.01 0.00 0.04 170 0.00 0.00 0.02 0.02 0.01 0.01 0.07 180 0.00 0.01 0.02 0.02 0.00 0.00 0.05 190 0.01 0.01 0.01 0.01 0.01 0.00 0.04 200 0.00 0.02 0.02 0.02 0.00 0.01 0.09 210 0.02 0.03 0.06 0.02 0.01 0.00 0.13 220 0.01 0.02 0.08 0.04 0.03 0.02 0.19 230 0.01 0.06 0.12 0.14 0.05 0.02 0.39 240 0.01 0.09 0.22 0.15 0.02 0.03 0.51 250 0.02 0.18 0.26 0.10 0.02 0.00 0.58 260 0.02 0.13 0.24 0.04 0.01 0.00 0.44 270 0.02 0.16 0.22 0.02 0.01 0.00 0.42 280 0.02 0.13 0.11 0.01 0.00 0.00 0.27.
290 0.02 0.10 0.10 0.01 0.01 0.00 0.24 300 0.01 0.09 0.06 0.00 0.00 0.00 0.15 310 0.01 0.04 0.06 0.01 0.00 0.00 0.12 320 0.01 0.03 0.05 0.01 0.01 0.01 0.12 330 0.01 0.03 0.03 0.01 0.02 0.01 0.11 340 0.01 0.04 0.04 0.03 0.02 0.01 0.15 350 0.01 0.02 0.06 0.07 0.05 0.01 0.22 Rows may not sua to exact total due to rounding off.
I 3090S/0079K.
TABLE F1 (Cont.)
PERCENT OF TIME FOR EACH WIND SPEE0 AND DIRECTION FOR THE PERIOD APRIL 1962 THROUGH JUNE 1967 RECORDED AT THE 250 FOOT ELEVATION STABILITY CLAS$: PASQUILL 'D' WIND MIND SPEED (MPH)
DIRECTION (DEGREES) 0-3 4-7 8-12 13-18 19-24
>24 Total 0
0.11 0.34 0.78 0.85 0.49 0.48 3.05 10 0.04 0.27 0.52 0.46 0.38 0.27 1.95 20 0.05 0.21 0.32 0.19 0.16 0.11 1.04 30 0.06 0.20 0.16 0.08 0.03 0.04 0.58 40 0.05 0.11 0.05 0.02 0.00 0.01 0.23 50 0.03 0.05 0.08 0.00 0.01 0.00 0.16 60 0.04 0.08 0.04 0.00 0.00-0.00 0.15 70 0.04 0.02 0.01 0.01 0.00 0.00 0.08 80 0.02 0.04 0.00 0.01 0.00 0.00 0.07 90 0.01 0.04 0.03 0.00
'0.00 0.00 0.09 100 0.02 0.01 0.02 0.00 0.00 0.00 0.05 110 0.00 0.03 0.01 0.01 0.00 0.00 0.06 120 0.02 0.03 0.03 0.02 0.01 0.00 0.11 130 0.01 0.03 0.02 0.02 0.01 0.00 0.10 140 0.02 0.03 0.02 0.04 0.01 0.01 0.13 150 0.03 0.03 0.03 0.09 0.03 0.02 0.23 160 0.01 0.04 0.05 0.10 0.04 0.01 0.26 170 0.02 0.05 0.12 0.16 0.04 0.01 0.40 180 0.04 0.08 0.12 0.13 0.C?
0.01 0.40 l
190 0.02 0.07 0.09 0.06 0.03 0.02 0.28 200 0.05 0.10 0.17 0.11 0.04 0.01 0.46 210 0.05 0.12 0.20 0.08 0.04 0.01 0.51 220 0.05 0.14 0.14 0.12 0.05 0.02 0.51 230 0.03 0.14 0.17 0.11 0.06 0.02 0.53 240 0.08 0.22 0.21 0.06 0.03 0.01
.0.61 250 0.06 0.17 0.13 0.04 0.01 0.00 0.43 260 0.08 0.22 0.13 0.02 0.01 0.00 0.47 270 0.12 0.21 0.11 0.03 0.01 0.00 0.49 280 0.05 0.20 0.11 0.04 0.00 0.00 0.40 2 90 0.04 0.22 0.11 0.02 0.00 0.00 0.39 300 0.10 0.21 0.21 0.02 0.01 0.00 0.53 310 0.08 0.28 0.19 0.03 0.02 0.01 0.60 320 0.07 0.25 0.33 0.09 0.04 0.01 0.80 330 0.06 0.21 0.35 0.16 0.09 0.03 0.90 340 0.07 0.24 0.50 0.47 0.17 0.08 1.53 350 0.07 0.30 0.82 0.86 0.49 0.33 2.87 Rows may not sua to exact total due to rounding off.
3090$/0079K 4
TABLE F1 (Cont.)
PERCENT OF TIME FOR EACH NIND SPEED AND DIRECTION FOR THE PERIOD APRIL 1962 THR00GH JUNE 1967 RECORDED AT THE 250 FOOT ELEVATION STABILITY CLASS: PASQUILL 'E' N!ND MIND SPEED (MPH)
DIRECTION (DEGREES) 0-3 4-7 8-12 13-18 19-24
>24 Total 0
1.04 1.06 2.00 1.84 0.82 0.10 6.86 10 0.17 0.80 1.55 0.90 0.36 0.10 3.78 20 0.30 0.83 1.26 0.47 0.13 0.00 2.99 30 0.37 0.73 0.64 0.19 0.01 0.00 1.94 40 0.21 0.60 0.47 0.02 0.00 0.00 1.31 50 0.18 0.56 0.28 0.02 0.00 0.00 1.05 60 0.21 0.54 0.19 0.00 0.00 0.00 0.93 70 0.19 0.44 0.07 0.00 0.00 0.00 0.81 80 0.20 0.41 0.07 0.00 0.00 0.00 0.68 90 0.27 0.47 0.17 0.01 0.00 0.00 0.82 100 O.17 0.24 0.06 0.01 0.00 0.00 0.49 110 0.20 0.31 0.10 0.00 0.00 0.00 0.60 120 0.18 0.31 0.19 0.01 0.02 0.00 0.70.
130 0.14 0.25 0.08 0.08 0.03 0.03 0.72 140 0.09 0.22 0.21 0.23 0.22 0.25 1.21 150 0.09 0.24 0.22 0.45 0.52 0.46 2.08 160 0.05 0.22 0.25 0.62 0.44 0.21 1.79 170 0.04 0.26 0.43 0.73 0.23 0.09 1.89 180 0.26 0.32 0.45 0.43 0.20 0.02 1,77 190 0.15 0.26 0.37 0.35 0.15 0.02 1.20 200 0.22 0.48 0.47 0.26 0.18 0.06 1.77 210 0.20 0.44 0.58 0.18 0.05 0.04 0.60 i
220 0.20 0.40 0.55 0.15 0.14 0.03 1.37 230 0.23 0.43 0.40 0.14 0.13 0.05 1.39 240 0.24 0.39 0.23 0.15 0.13 0.01 1.24 250 0.21 0.32 0.16 0.03 0.01 0.01 0.B4 260 0.24 0.31 0.17 0.03 0.00 0.00 0.85 270 0.35 0.35 0.i; 0.12 0.01 0.00 0.97 280 0.19 0.30 0.16 0.01 0.01 0.01 0.67 2 90 0.19 0.33 0.17 0.01 0.01 0.01 0.81 300 0.21 0.37 0.16 0.01 0.00 0.01 0.88 310 0.20 0.47 0.29 0.02 0.00 0.00 0.98 340 0.20 0.59 0.65 0.12 0.01 0.05 1.72 330 0.22 0.87 0.98 0.35 0.02 0.02 2.45 340 0.20 0.88 1.55-0.74 0.01 0.00 3.48 350 0.19 1.02 2.02 1.41 0.55 0.13 5.22
\\
Rows may not sua to exact total due to rounding off.
30905/0079K.
.A-
1 l
TABLE F1 (Cont.)
PERCENT OF TIME FOR EACH NIND SPEED AND DIRECTION FOR THE PERIOD AFRIL 1962 THROUGH JUNE 1967 RECORDED AT THE 250 FOOT ELEVATION STABILITY CLASS: PASQUILL 'F' MIND WIND SPEED (MPH)
DIRECTION (CEGREES) 0-3 4-7 8-12 13-18 19-24
>24 Total l
0 0.42 0.08 0.03 0.00 0.00 0.00 0.53 10 0.05 0.06 0.05 0.01 0.00 0.00 0.18 20 0.05 0.09 0.08 0.03 0.00.
0.00 0.24 30 0.12 0.11 0.10 0.04 0.00 0.00
-0.37 i
i 40 0.07 0.13 0.10 0.03 0.01 0.00 0.34 l
50 0.09 0.13 0.06 0.00 0.00 0.00 0.27 l
i 60 0.14 0.19 0.07 0.01 0.00 0.00 0.40 l
l 70 0.11 0.22 0.08-0.00 0.00 0.00 0.40 80 0.10 0.22 0.07 0.00 0.00 0.00 0.40
?
90 0.14 0.25 0.07 0.00 0.00 0.00 0.46 i
100 0.11 0.29 0.09 0.01 0.01 0.00 0.51 l
110 0.13 0.31 0.13 0.02 0.00 0.00 0.59 i
120 0.15 0.33 0.18 0.03 0.00 0.00 0.69 l
130 0.10 0.23 0.14 0.02 0.00 0.00 0.50
)
140 0.10 0.22 0.11 0.09 0.02 0.00 0.54 150 0.12 0.19 0.10 0.07 0.03 0.02 0.52 160 0.08 0.15 0.16 0.08 0.01 0.00 0.47 170 0.07 0.15 0.14 0.07 0.00 0.00 0.43 l
180 0.16 0.26 0.13 0.02 0.00 0.00 0.56 190 0.12 0.18 0.13 0.02 0.00 0.01 0.46 200 0.13 0.25 0.18 0.02 0.00 0.00 0.58 i
210 0.18 0.32 0.20 0.02 0.00 0.01 0.73 l
220 0.14 0.28 0.09 0.02 0.00 0.00 0.54 l
230 0.18 0.24 0.07 0.01 0.01 0.00 0.50 240 0.19 0.19 0.05 0.02 0.00 0.00 0.45 250 0.15 0.16 0.01 0.00 0.00 0.00 0.32 4
l 260 0.17 0.10 0.01 0.00 0.00 0.00 0.29 i
270 0.18 0.09 0.01 0.00-0.00 0.00 0.28 280 0.10 0.04 0.01 0.00 0.00 0.00 0.15 290 0.11 0.05 0.01 0.00 0.00 0.00 0.16 300 0.13 0.07 0.00 0.00 0.00 0.00 1.19 i
310 0.07 0.05 0.01 0.00 0.00 0.00 0.13 320 0.09 0.05 0.03 0.00 0.00 0.00 0.17 i
330 0.09 0.09 0.01 0.00 0.00 0.00 0.19 340 0.06 0.10 0.03 0.01 0.00 0.00 0.20 350 0.07 0.09 0.05 0.01 0.00 0.00 0.21 2
i Rows may not sua to exact total due to rounding off.
t i
s 3090$/0079K,
-.,m-
..,,..,., _..... -.. - - - ~.
.., - - - ~..
,