HomeMy WebLinkAbout2023-04-06 PD PowerPoint Presentation (PL-SPP-2022-000025) ACADEMIA SINICA INSTITUTE OF
ASTRONOMY AND ASTROPHYSICS
SPECIAL PERMIT NO . PL-SPP-2022-000025
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APPLICANT'S REQUEST
■ SPECIAL PERMIT TO ALLOW THE FOLLOWING USES ON A 2-ACRE PORTION OF A LARGER 10.7-ACRE
PROPERTY:
■ TEN COMMERCIAL TV SATELLITE DISHES (20 FEET IN DIAMETER) WITH RECEPTION CAPACITY OF 400-
800 MHz, FIXED IN A STATIONARY POSITION FACING NORTHEAST, WITH 7 TO 8-FOOT-TALL SUPPORT
POLES.
■ A 50-FOOT X 50-FOOT DIPOLE ANTENNA ARRAY, WITH STATIONARY DIPOLE ANTENNAS.
■ A GRAVEL DRIVEWAY APPROXIMATELY 1 ,400 FEET IN LENGTH AND 10 FEET IN WIDTH, WITH AN
UNOBSTRUCTED CLEAR WIDTH OF 20 FEET FOR FIRE DEPARTMENT ACCESS.
■ ONE CATCHMENT TANK OF AT LEAST 4,000 GALLONS CAPACITY FOR FIRE SUPPRESSION.
■ ONE PORT-A-POTTY.
■ TWO 40-FOOT SHIPPING CONTAINERS FOR STORAGE.
■ A SMALL (25-30 PANEL) SOLAR POWER ARRAY TO SUPPORT APPROXIMATELY 10 KILOWATTS OF
POWER TO BE INSTALLED ON TOP OF OR ADJACENT TO SHIPPING CONTAINERS.
■ UNDERGROUND POWER LINES CONNECTING THE SATELLITE AND DIPOLE ANTENNA ARRAYS TO THE
SHIPPING CONTAINERS AND SOLAR POWER ARRAY.
■ FENCING TO PROTECT THE PROPOSED ARRAYS FROM GRAZING ANIMALS, ENCLOSING AN AREA OF
APPROXIMATELY 1 ACRE.
REASONS FOR REQUEST
■ ACCORDING TO THE APPLICANT, THE ARRAY OF SATELLITE DISHES WOULD CONDUCT SCIENTIFIC
STUDIES ON THE ASTROPHYSICAL ORIGIN OF FAST RADIO BURSTS (FRBS) . FRBS ARE POWERFUL
RADIO BURSTS COMING FROM WITHIN AND OUTSIDE OF OUR GALAXY, WHICH ARE NOT YET
UNDERSTOOD. THE APPLICANT INTENDS TO STUDY THE SOURCES AND ORIGINS OF THESE RADIO
BURSTS, WHICH REQUIRES A "RADIO-QUIET" SITE. KA'U WAS FOUND TO BE THE BEST RADIO-QUIET
AREA ON HAWAI`I ISLAND, BASED ON SURVEYS CONDUCTED BY THE APPLICANT.
■ THE SATELLITES AND ANTENNAS ARE DESIGNED FOR FRB RECEPTION ONLY, THEREFORE NO
OUTWARD TRANSMISSION OF RADIO SIGNALS WOULD OCCUR. IN ADDITION, ALL SATELLITES
WOULD BE FIXED TO LOOK AT THE NORTHEASTERN SKY ONLY, THUS NO SATELLITE MOVEMENT •
WOULD OCCUR.
■ THE PROPOSED USE WILL BE TEMPORARY, WITH AN UNSPECIFIED LEASE TERM THAT INCLUDES THE •
OPTION TO RENEW THE LEASE.
■ THE PROPOSED FACILITY WILL OPERATE UNATTENDED ON A CONTINUOUS BASIS, WITH 1 PERSON
CHECKING ON OPERATIONS ONCE OR TWICE A WEEK.
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DEPUTY DIRECTOR ' S RECOMMENDATION � •
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APPROVAL WITH CONDITIONS . :�i
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INCLUDING A I O-YEAR LIFE OF THE PERMIT WITH :�i
NO OPPORTUNITY FOR RENEWAL 0