Table I. Difference in Mercury Concentration (in ppm) Between Tops and Bottoms of 15-cm Gravity Cores from the Long Wharf Area Difference between 0-8 cm 8-15 crn top and bottom 0.24 0.78 0.74 0.19 0.06 0.73 1.35 0.32
0-5 crn 2.55
0.24 1.07 0.25 0.08 0.08 0.27 2.40 0.14
0 -0.29 +0.49
+0.11 -0.02 +0.46 -1.05
Literature Cited Hatch, W. R., Ott, W. L., Anal. Chem., 40,2085-7 (1968). Kennedy, E. J., Ruch, R. R., Shimp, N. F. 111. Stare Geol. Surc. Enciron. Geol. Notes No. 44, 1971. Klein, D. H., Goldberg, E. D., ENVIRON. SCI. TECHNOL., 4,
$0.18
5-10 cm 10-15 cm 1.12
0.52
There does not appear to be any evidence of an additional source of supply of mercury to the New Haven Harbor sediments other than municipal sewage treatment plants. The New Haven plants have only primary treatment and until recently accommodated both the sanitary and storm sewer burden of the city. We suspect that the high organic carbon and metals, including mercury, in the sediments around the outfalls are due to escape of sewage sludge which settles into the sediment rather than the consequence of high productivity at these points, resulting in a biological transport of the metals to the sediment.
f2.03
765-8 (1970).
case by Klein and Goldberg (1970) for the Hyperion Sewage plant off Los Angeles. Mercury correlates with the organic carbon content of the sediment as do the other metals (Turekian et al., 1972; Kennedy et al., 1971) and the organic carbon content in New Haven Harbor is related directly to the sewer outfall sites. The different patterns of mercury distribution in the sediments around the outfalls are due to the local current systems.
McColloch, D. S., Cononlos, T. J., Peterson, D. H., Leong, K., U S . Dept. of the Interior and U S . Dept. of Housing and Urban Development, San Francisco Bay Region Environment and Resources Planning Study, Basic Data Contribution 14, 1971. Turekian, K. K., Berner, R. A., Benninger, L., Katz, A., Addendum 12 of Environmental Report, Coke Works Site, United Illuminating Co., New Haven, Conn., 1972. Receiced for reciew August 14, 1972. Accepted September 26, 1972. Research was supported by AEC grant AT(ll-1)3573.
CORRECTION Recent Sedimentary History of Lake Mendota, Wis. In this article by G. C. Bortleson and G. F. Lee [ENVIRON. Scr. TECHNOL., 6 (9), 799-808 (1972)], in Figure 4, the date at the 40-cm level should read 1895 rather than 1875.
1124 Environmental Science & Technology
