propriate sensitive marine organisms in the 96-hour test period, or that produces another identifiable reliable physiological indicator of toxicity in such animals within the same time period. The 0.01 factor is based on the best available current experience and is subject to revision or modification based on the general increase in knowledge or specific information on the effects of a specific waste. 227.72 Mixing zone. A mixing zone is the column of water immediately contiguous to the release zone, beginning at the surface of the water and ending at the ocean floor, the thermocline or halocline, if one exists, or 20 meters, whichever is the shortest distance. $ 227.73 Release zone. A release zone is the area swept out by the locus of points constantly 100 meters from the perimeter of the conveyance engaged in dumping activities, beginning at the first moment in which dumping is scheduled to occur and ending at the last moment in which dumping is scheduled to occur. § 227.74 Trace concentrations. Trace concentrations, for the purposes of these regulations, are those concentrations in a waste of materials identified in § 227.22 which do not exceed by one order of magnitude the concentra tion of the same constituent in a sample of natural seawater at the dumping site or in an adjacent area not subject to dumping. 8 227.75 High-level radioactive wastes. High-level radioactive waste means the aqueous waste resulting from the operation of the first cycle solvent extraction system, or equivalent, and the concentrated waste from subsequent extraction cycles, or equivalent, in a facility for reprocessing irradiated reactor fuels or irradiated fuel from nuclear power reactors. $ 227.80 Amendment of criteria. In the event that the Administrator or his delegate concludes that it is desirable to amend this part, he shall announce his intention of doing so by publishing notice thereof in the FEDERAL REGISTER, and shall thereafter follow the procedures prescribed in section 4 of the Administrative Procedures Act (5 U.S.C. 553). Any person proposing amendments to this part shall notify the Administrator of the amendments so proposed, and the justifications supporting the amendments so proposed. Should the Administrator reject the amendments so proposed, he shall notify the proponent of such action within 30 days of the date upon which such amendments were given to him. APPROVED INTERIM DUMPING SITES EPA REGION I Location Size Depth Primary use Latitude and longitude 44°14', 68°53' 2.0 120 Dredged materials. Do. Do. EPA REGION II 40° 24', 73°51', 40°23', 73°49' 40°25', 73°45' 40°20' 73°40' 40°13', 73°46' 2.0 88 Mud. Manasquan River, 20° true, 600 yd from north jetty, light near 40°6', 74°2'. Absecon Inlet, 140° true, 0.8 to 1.1 miles from south jetty light near 30°21', 74°23'. Cold Spring Inlet, 240° true, 1.2 to 1.5 miles froin west jetty light, 38°56', 74°54'. 106 nmi, 145o true, from Ambrose Light, 38°45', 73°15'. 19°10 to 19°20' 66°35' to 66°50'. Approximately 123 nmi southeast of Ambrose Light, south of 39°0ʻ, north of 38°30', west of 72°0', east of 72°30'. 18°11', 67°12' 18°30, 66°30'. 17050, 65032 EPA REGION III 2.0 2.0 2.0 38°45', 74°47' 38°30'to 38°35' 74°16' to 74°25' 38°20' to 38°25' 74°10' to 74°20' 38°0 to 38°20'. 7300% to 74°20'. 244 miles east of Dam Neck, Va., near 36°46', 75°55'. 16 miles northeast of Cape Henry, Va. near 37°05', 75°42'. 37°50', 74°15'. 33°16' to 33°30 2.0 3.0 4.0 (1) 2.0 EPA REGION IV Wilmington Harbor, 33°48', 78°02. 40 Sewage sludge. 150 Industrial salt waste. 6,000 Arsenic solutions. 38 Sand. 6, 600 Conventional munitions. 3.5 1.0 45 Sand and silt (hopper dredge). Do. Do. Do. 31 Sand and shell. Do. 24 Do. 44-48 Dredged materials (hopper dredge). 23-32 Do, 23-32 Do. 36-42 Do. 30-40 40 36-42 Do. Do. 1 3-mile radius. Latitude and Longitude Calcasieu Pass, Area A, 29°45', 93°21'. 1.0.. Calcasiou Pass, Area B, 29° 45', 93°20'. 1.0.. Calcasiou Pass, Area C, 29°42', 93°21'. 5.0.. Calcasiou Pass, Area D, 29°35', 93°17'. 5.0... Southwest Pass, 28°52', 89°31'. 2.0.. Waste disposal área, 2744', 94°44', 27028°, 94°28'..... 16 miles by 16 miles. miles. 2.5. 2.5. Off Galveston, Tex., Area C, 29°17', 94040 Approximately 7.. Off Galveston, Tex., Area D, 29°22', 94°43'. Approximately 8.. EPA REGION IX 1,620 Dredged materials. Do. Do. 90 Do. 60 Do. 254 Cannery wastos. 60 Dredged materials. 36 Do. 70 Do. 65 Construction material. 21°14', 157°54' 1.0.. 21°55', 159°17'. 1.0. 21°50, 159°35' 1.0.. 33°41', 118°10' 4... 34°07', 119°10 2.0. 37°35', 122°50' 2.0. 36° 49', 121°50' 2.0.. 37°46', 122°38' 1.0. 30°36', 124°16'. 1,500 ft diameter... 37°46', 122°33' (Seal Rock)... 1,950 yd long bearing 45° true, 1,300 yd wide bear ing 1350 true. 83°17', 118°10'. 2.0.... 32°33' 119°06' 2.0. 32°35', 117°17'. 1,000-yd radius.. 83°37', 118°40'. 3-mile radius. 40°46, 124°16' 500 yd. Crescent City, 210° true from Round 1,000 ft diameter.. Rock, (41°43', 124°12'). Noyo Harbor, 39°25', 123°50% 500 ft diameter. San Francisco Bar, western end of ship. 5,000 yds long.... ping channel 2,500 ft south of channel 1,000 yds wide.. (37° 45', 122°36'), Moss landing west of ocean pier (36°49', 2.0...... Dry garbage and trash. Do. Toxics and chemicals. Dredged material. 360 Do. 3,000 Conventional munitions. 12, 000 Do. 6,600 Do. 7, 200 121°50'). 33°00', 118°55'. 3-mile radius. 34° 40', 122°00' do.... 37°40', 123°25'. do.. 21°26' 159°38' .do..... 30°20', 131°25' do. 14°32', 120°10' 2-mile radius 13°15', 144°15' 3-mile radius.. Do. 5,000 Do. 3,000 Do. 6,000 Do. 46° 14', 124° 10 124° 16' 124° 14 44° 01', 124° 09' 46° 42', 124° 10 46° 56', 124° 07'. 61° 15', 149° 54'. 64° 30', 165° 27'. 48° 16', 126° 58'. 45° 34' 123° 59' 4° 48', 124° 04' 44° 36', 124° 06'. 0.3.... 0.2.. 130 Sand. Do. Do. Do. 90 Dredged materials, 30-35 Do. (1) Do. (1) Do. 8, 300 Conventional munitions. Dredged materials. Do. EPA HEADQUARTERS 33° 55', 08° 16'.... 3-mile radius....... 6,600 Conventional munitions and dredged spoil. 1 Not specificed. |