Section 5 

 POETLABD, MAISE — U. S. NAVAL STATION 



A5.OI Location of Test Station and Test Board 



A test "board of the panel type vas installed on June 2, 19^> at 

 ■what vas then the U. S. Naval Frontier Base hut later the U. S, Naval 

 Station at Portland, Maine. This hoard was operated at the Naval SiQjply 

 Pier In Casco Bey until July 19^6, vhen the hoard was lost. A new test 

 hoard was Installed Septeaiber 26, 19k6, In the center of Pier No. 1 

 at South Portland, approximately I5 ft from the outhoard end. The new 

 hoard was relocated hecause of a change In a sewer at kOk Commercial 

 Street. The operation of this hoard was discontinued after March 2?, 19^7> 

 hecause of the dlsestahllshment of this U. S. Naval Station and the lose 

 of the hoard 



A5.O2 Hydrographlc Data 



The first huard Installed June 2, 19*«-^, was placed In water 1^ ft 

 deep where the liidal range was from 8 to 11 ft and "ttie currejit negllglhle. 

 The teng)erature of \he water at the time of Installation was 5^° F. The 

 water was suhjectto pollution from a sewer outlet approximately 5OO ft 

 from the installation. The sewage was reported to enter the tide water 

 approximately 100 ft from the installation. 



The second hoai^d was installed September 26, 19^6, and was placed 

 in water 30 ft deep at mean low water idiere the current was negllglhle. 

 The range of tide at this point was 8 to 11 ft, the normal raiage heing 

 8.9 ft. The temperature of the water at the time of installation was 

 59*^ F. The water was suhject to pollution from a sewer outlet approxi- 

 mately 700 ft from the installation. 



A5 . 05 Marine Borers 



1. Ter6dinidae . There was no evidence of Teredinldae during the 

 approximately 3^-™onth period over which this test was conducted. 



2. Limnorla . Llmnorla were active throughout this period, and 

 occurred in vsiriahle nuaibers in the control panels almost every month 

 each year except during the winter months. In the pemels suhmerged 

 hetween December k, 19kh and April 10, 19^5, and hetween Octoher 2, 19l»-5 

 and Meurch 6, 19'«-6, Limnorla were con^letely lacking. During the third 

 winter season a total of only 20 Llnmorla was recorded on the control panels 



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