Section 21 

 CORPUS CHRISTI, TEXAS -- U. S. M7AL AIR STATION 



A21.01 Location of the Test Station and Test Board 



A test "board of the panel type, designated ty the spibol USHCC-l, 

 was installed June 10, 19^1-^, at the U. S. Naval Air Station at Corpus 

 Christ!, Texas. It was Installed in the yardcraft small "boat hasin 

 in Coitus Christi Bay, and is attached to the south- southeast (landward) 

 side of a cluster of three creosoted wooden pile dolphins in the operating 

 area. The hoard to which the test hoard is attached is 292 ft from 

 a concrete "bulkhead. The operation of this test hoard is heing continued. 

 The results lfe,ve "been summarized to the" end of 19^7 • 



Inquiries were made in regard to previous records of destruction 

 "by marine "borers at this location. Mr. Eidenour, of the U. S. Engineers, 

 stated that while there has heen considerahle destruction hy mgirine 

 horers attacking the "boats and piles, no data have "been gathered hy them 

 on this subject. Mr. Gordon Gunter, of the Department of Marine Biology 

 of the Ifoiversity of Texas, and Dr. Joel W. Hedgpeth, Marine Biologist 

 of the Texas Game, Fish, and Oyster Commission, hoth stated that to their 

 knowledge no studies of marine "borer activities have ever been made in 

 this area. 



A21.02 Bydrographic Data 



The depth of water where the test hoard was installed was 

 given as 1^ ft at Idle start of the test in June 19^^ and as approximately 

 25 ft in March 19k6: The tidal range was said to he negligible except 

 when high winds occur. The tidal range from mean low water was given 

 as 1.1 ft at mean high water and as 0.6 ft at meein sea level. The 

 current velocity was not determined, but the location is somewhat 

 well protected from rough wave action by a pier and breakwaters. The 

 available data on temperatxire and salinity of the water are presented 

 in the following tables. The area was reported to be subject to consider- 

 able pollution from oil, grease, and paint wastes from surface craft 

 operating in the basin. From June 19^ to January 19^8 the bacterial 

 content, determined at monthly intervals, ranged from 10 to 550,000 per 

 cc, and the coll-aerogenes group from to 60 per cc, when no visual 

 signs of pollution were evident. 



99 



