Sonar Traces . Stations: 4 and 6. Disposition of traces: Woods Hole. 

 Xhe 20- to 25-foot sand humps shown on the bottom trace of station 4 are 

 typical of the bottom on Nantucket shoals at a depth of 30 fathoms or less; 

 the relatively flat though rough bottom trace of station 6 is typical of the 

 channel area at 30 fathoms and greater. 



Water column samples . Stations: 4, 5, 7, and 8. Disposition of samples: 

 Sandy Hook. The water bag sampler was used to collect water at 5 meters below 

 surface and 5 meters above bottom at stations 4, 5, and 7. At station 8, the 

 samples were collected at 5 and 15 meters below surface. Oil was not observed 

 in any of these samples. 



Water column plankton samples . Stations: 4-9. Disposition of samples: 

 Narragansett. Bottom to surface bongo tows were made (20 and 61 centimeter 

 bongos) with 0.165, 0.253, 0.333, and 0.505 millimeter mesh nets. No oil 

 particles were noticed but there was probably surface oil contamination in 

 samples 8 and 9 from stations 7 and 8. 



Surface plankton samples . Stations: 4-9. Disposition of samples: 

 Narragansett. Neuston samples (using 0.505-millimeter mesh) showed specks 

 of tar at stations 4, 5, 6, and 9; station 9 was possibly contaminated. 

 Stations 7 and 8 were made in the oil slick and the net soaked with oil was 

 saved in a can. Larval sand launce and hake were observed in the samples, 

 and Sagitta (arrow worms) comprised a large portion of the sample. Also, 

 eggs were observed in the station 9 sample. 



Bottom biological samples . Stations: 4 and 6. Disposition of samples: 

 Woods Hole. A 25-centimeter ring net (mesh approximately 1 millimeter) 

 attached to the trawl headrope was used at trawl stations to sample smaller 

 organisms that escape the trawl. Catch was largely small Crustacea, which 

 were preserved in 10% formalin. 



Bottom sediment samples . Stations: 4-9. Disposition of samples: Woods 

 Hole. Sediments obtained at station 4 by 4-lnch pipe dredge were found to be 

 clean; at station 5 by bongos hitting bottom, were discarded, but noted to be 

 clean; at station 6 by pipe dredge were clean; at station 7 by bongos were 

 clean; at station 8 in small amounts, by Dietz Lafond grab, were clean; and 

 at station 9 using a Digby dredge contained shell fragments and were also 

 found to be clean. All sediments were stored dry. 



Live samples . Station: 9. Disposition of samples: Milford. Approxi- 

 mately 20 hermit crabs, clams, and miscellaneous bivalves were secured using 

 a Digby dredge (small 2-foot wide dredge with ring bag and 1/2-inch liner) . 

 A tow was made for 5 minutes at approximately 2-1/2 knots. Live samples were 

 maintained in running water. Specimens reached Sandy Hook in viable condi- 

 tion. 



Vessels . No fishing vessels were sighted, probably due to the holiday 

 season. The A.vgo Merohant was observed at approximately 6 miles distance. 

 There were two Coast Guard vessels in the area, and two helicopters. 



V-18 



