The second group contains station 1 (Fig. 2), located seaward of Treasure 

 Island Motel (near the eastern end of the study area) , which had two collect- 

 ing areas — one at the borrow site and the other a short distance away on 

 undredged bottom. Samples were taken from the designated borrow site before 

 dredging in April, June, and July 1976. Then 2 days after dredging (10 August 

 1976), concurrent sampling was started inside and outside the borrow pit. 

 Sampling in both the pit (experimental samples) and adjacent to it (control 

 samples) continued on a weekly schedule for 1 month. Samples were taken twice 

 the next month, and then monthly thereafter until the study was concluded in 

 November 1977. These samples were collected to record diversity and abundance 

 of benthic fauna at a specific dredge site before dredging started, and then, 

 over time, to compare population characteristics of control samples with 

 experimental samples. 



The third group includes stations 1, 2, 3, 4, 5, and 6 for one-time 

 sampling only inside and outside borrow pits during July 1977 — about 12 months 

 after dredging (Fig. 2). The six stations were located seaward of the follow- 

 ing landmarks: station 1, Treasure Island Motel; station 2, Sun and Swim Motel; 

 station 3, Hilton Holiday Inn, station 4, Sandpiper Motel; station 5, Peppertree 

 Condominium (now Landmark Condominium); and station 6, Blue Dolphin Motel. 

 These collections provided a comparison of fauna in control and experimental 

 samples from a number of borrow pits for an evaluation of short-term recovery 

 within a period of 1 year. Throughout this report, samples from stations A 

 and B, and preconstruction samples from station 1, are referred to as base- 

 line or control samples; all other samples from outside borrow pits are called 

 control samples, and all samples from within borrow pits are designated 

 experimental samples. 



IV. SAMPLING AND ANALYTICAL PROCEDURES 



1. Hydrology . 



Surface water temperature and salinity measurements were recorded in each 

 sampling period at stations A and B, and on a monthly schedule over the 

 duration of sampling at station 1. Temperature was taken using a hand-held, 

 mercury bulb thermometer graduated in Celsius degrees. Salinity, in parts 

 per thousand, was determined with a Goldberg temperature-compensated 

 ref ractometer (American Optical Co., Model No, 10419). 



2. Sedimentology . 



Sediment samples were collected to determine textural features, statistical 

 properties, and carbon chemistry. Textural parameters included weight percentages 

 of granules, sand, and silt-clay. Mean grain size, standard deviation (as a 

 measure of sorting), skewness, and kurtosis were calculated and interpreted 

 according to the system described by Folk (1974) . The carbon analyses included 

 total carbon, total organic carbon, and total carbonate carbon. 



12 



