POPLAR RIVER FISHERY INVESTIGATION MONTANA MAY, JULY-AUGUST 1975 TECHNICAL INVESTIGATIONS BRANCH SURVEILLANCE AND ANALYSIS DIVISION U. S. ENVIRONMENTAL PROTECTION AGENCY REGION VIII MARCH, 1976 ------- INTRODUCTION In March of 1975 the Montana Department of Health and Environmental Sciences (DHES) requested that the Surveillance and Analysis Division, E.P.A. Region VIII, conduct a fishery survey of the Poplar River, Montana. The request was initiated when DHES personnel learned that a new coal- fired generating station had been proposed by the Saskatchewan Power Corporation in Canada. The station will be located on the East Fork of the Poplar River near Coronach, Saskatchewan and will discharge an effluent high in total dissolved solids. Drainage from coal stockpiles and fly-ash lagoons may also contribute toxic materials to the river. The Poplar River originates in Canada and flows south into Montana for 160.9 kilometers (100 miles) where it joins with the Missouri River near Poplar, Montana (Figure 1). The Poplar River was reported to support a resident walleye (Stizostedion vitreum) fishery downstream from the town of Scoby, Montana and to serve as an important spawning and nursery area for both resident fish and migrating Missouri River fish. As a result, the requested purpose of the survey was to determine the relative abundance, distribution and habitat utilization of sport fishes in the river. In response to the request a two phase study was suggested which would assess the spring spawning activities of the walleye (S_. vitreum) and northern pike (Esox lucius) which are the predominant sport fishes in the river, and would also determine relative abundance, habitat utilization, and distributions of sport fishes during critical summer low flow conditions. During the remainder of 1975 the DHES was to conduct water quality and macro-invertebrate population studies on the stream. The Montana Department of Fish and Game was to conduct mark and recovery studies on the existing sport fisheries in order to estimate population size and determine the extent of migrations throughout the system. METHODS Fish sampling was conducted with trap nets, seines or electrofishing. Trap nets used during the survey had 0.76 by 0.91 meter (2.5 ft. x 3 ft.) frames or 0.76 by 1.52 meter (2.5 ft. x 5 ft.) 'frames. Smaller nets had a 0.63 cm. mesh {h in.) and the larger frame nets had 1.27 cm.(^ in.) mesh. All trap nets were set for 24 hour periods. Data from the trap nets are reported in Tables 1 and 2 (Appendix). Two haul seines were used to capture fish from pool areas. A 1.83 meter by 30.48 meter (6 ft. x 100 ft.) net with 1.27 cm. {h in.) mesh was used in small pools. Larger pools required the use of a 3.05 by 76.2 meter (10 ft. x 250 ft.) net with 2.54 cm. mesh. Fish caught by seine are reported in Table 3 (Appendix). Electrofishing was conducted with a Coffelt1 system capable of generating a maximum of 300 volts, 10 amps, and 200 pulses per second. A single probe with 91.4 meters (300 ft.) of cable was used to shock fish. Fish shocking data are presented in Table 4. 1. Any mention of product names does not constitute E.P.A. endorsement. ------- Figure 1. Poplar River, Montana. ------- - 2 - Water samples were collected for total suspended solids (TSS), total dissolved solids (TDS) and metals. TDS and TSS samples were preserved with wet ice. Samples for metals analysis were preserved with 5 ml of HNOo per liter of sample and analyzed (as is, not digested) by atomic absorption. Results are reported as acid recoverable. All TSS, TDS and metals samples were transported to the Region VIII E.P.A. laboratory in Denver for analysis. Selected parameters were measured in the field at each sampling station. The parameters and methods used to analyze them were as follows: pH with an I.L. meter and probe, conductivity with a Beckman conductivity meter, temperature with a hand held dial thermometer and flows with a Kahlisco Pygmy current meter. Dissolved oxygen samples were collected, fixed in the field and analyzed later. Descriptions of .sampling station locations are listed in Table 5. Figure 2 depicts the locations of the sampling stations. RESULTS AND DISCUSSION Fish During the May (Spring) survey water levels were high (70 c.f.s. at the Canada-U.S. border, EF-6) and permitted fish to scatter through- out the system instead of congregating the deeper runs and pools. Thus, large numbers of fish were not captured. Trap nets only were used to capture fish at selected sampling sites. Numbers of fish captured are listed in Table 1 and the distribution of sport fishes as indicated by catch data is shown in Figure 3. Walleye were collected from each section of the Poplar River system, indicating their use of each drainage area during Spring flow conditions (Figure 3). Very few fish were caught at the station near the mouth (PR-1). However, the survey was conducted immediately after high water conditions and migrating fish may have already passed the station. A male walleye was cptured on the East Fork approximately two miles downstream from the border (EF-5). North- ern pike were collected'on the upper main stem (PR-4) and West Fork (WF-1). Only one ripe fish was captured during the May survey. Water quality as measured during the Spring survey was sufficient to support fish life at all stations (Table 6). The Summer (July-August) survey was more intensive. Seines, electro- fishing equipment, and trap nets were used to capture fish. Figure 4 and Tables 2, 3, and 4 list fish caught during the survey. Flows were lower than those in the Spring sampling period (Table 7) and more fish were congre- gated in the deeper pools. Young of the year walleye or first year fish were captured in the East and Middle Forks near the U.S.-Canada border (Stations MF-5 and EF-6). The presence of first year fish in these areas ------- ------- Figure 3. Foplar River Fishery Investigation - Catch Data, May 1975. ------- Figure h. Poplar River Fishery Investigation - Catch Data, July-August 1975. ------- - 3 - indicates adult fish are using the river for spawning, probably in the general vicinity of the stations where the young fish were captured. Also, some portions of the river were being used as rearing .areas for juvenile fish. Adult walleye were found throughout the Poplar River system with the largest concentrations of fish located near the confluence of the East and Middle Forks (Figure 4). Northern pike were captured in the East and Middle Forks and in the main stem. No northern pike were captured in the West Fork. Young of the year pike were collected from the upper Middle Fork (MF-5) and the lower main stem (PR-2). Smallmouth Bass were collected from the lower main stem (PR-2), the lower West Fork (WF-2) and the upper main stem (PR-3), (Figure 4). Most of the fish caught during the summer survey were inhabiting deep pools in the stream; very few fish were taken from riffle areas. The upper section of the East Fork (EF-4-6) did not support many game fish during this survey (Figure 4). The stream bottom in the upper East Fork was soft mud and walleyes, which require rocky riffle areas for spawning, would find very few areas suitable for egg deposition. Both the Middle Fork and main stem had rock substrates in riffle areas where adult walleye could spawn and replenish the population. The West Fork supported game fish only as far upstream as Station WF-2. No game fish were found at the upstream stations (WF-3 through 6). At these stations the West Fork had no measurable flow and consisted of pools bordered by extensive growths of aquatic weeds. Forage or non- game fish were abundant in the upper sections of all three forks. WATER CHEMISTRY Analysis of water samples collected from the Poplar River system during the Summer survey did not reveal any chemical constituents ..that would be acutely toxic to fish (Tables 7 and 8). Sodium and boron values were high but probably would not affect the present fishery. Aluminum values were high (up to 2500 yg/£ at PR-2 and 2100 yg/s, at MF-3) and if allowed to increase could affect the fishery. Ionized or potentially ionizable aluminum as anionic or neutral precipitates may be deleterious to growth and survival at concentrations greater than 0.1 mg/£ (E.P.A., 1972). Total dissolved sol i.ds ranged from a low of 770 mg/£ in the West Fork (WF-1) to a high of 1650 mg/x. in the East Fork (EF-6) on August 29. Specific conductivities, which usually reflect TDS values varied from 940 at WF-4 to 2300 micromhos on the East Fork (EF-6) on July 31 and 1038 to 2410 micromhos (WF-4 and EF-6) on July 29. In laboratory studies ------- - 4 - Peterka (1972) determined that water of 1300 micromhos did not affect the hatching of walleye and northern pike eggs. At 4000 micromhos there was no hatching of walleye eggs and poor hatching of northern pike eggs. Thus, increases in TDS during the spawning or hatching season could have a detrimental effect on the existing fisheries. At times the summer water temperatures may reach the maximum range for the sport fishes. For example, on July 29 stream temperatures ranged from 24 to 30 C. The maximum temperatures recommended for walleye and pike are approximately 29 C (National Technical Advisory Comm., 1968). If water temperatures increase above the 30 C level the sport fish populations will be adversely affected. CONCLUSIONS The Poplar River supports a walleye fishery throughout most of the system. The most important area, as reflected by numbers of fish captured, was in the vicinity of the East and Middle Fork confluences. More fish were found in the main stem just downstream from the confluence and immediately upstream on both forks than in any other reach of the river. Northern pike were found mainly in the main stem and Middle Fork. Young of the year sport fish were captured in the Middle and East Forks and main stem indicating the use of these stream reaches as spawning and rearing areas. During the Spring, stream flows were high and fish spread throughout the river system. In the Summer, low water flows resulted in fish inhabiting the deeper pools within the stream. Chemical analysis of water samples revealed high concentrations of aluminum and total dissolved salts (TDS). Aluminum values were as high as 2500 yg/£, and total dissolved salts produced a specific conductance of 2410 micromhos on the upper East Fork. Increases in either aluminum or TDS could adverselyaaffect the fish populations. During the Surrmer survey, water temperatures were at or above the maximum temperatures recommended for walleye and northern pike. As a result, if the existing fishery is to be protected efforts should be made to prevent any withdrawal of water or added effluent from increasing temperatures, TDS or aluminum concentrations beyond those already observed. ------- LITERATURE CITED Environmental Protection Agency. 1972. Water Quality Criteria, Ecological Research Series EPA -R3-73-033. p. 179. National Technical Advisory Committee. 1968. Water Quality Criteria, Federal Water Pollution Control Administration. 234 pp. Peterka, John J. 1972. Effects of saline waters upon survival of fish . eggs and larvae and upon theecology of the fathead minnow in North Dakota. Dept. of Zoology, N. Dakota State Univ. OWRR Project No. A-027-NDAK. 11 pp. ------- APPENDIX ------- TABLE 1 POPLAR RIVER FISHERY INVESTIGATION KAY 1975 1 net day = 24 hour set (PR-1) Poplar River at Poplar, Montana 8 net days 1 Walleye (240 mm) 2 Sauger (260, 275 mm) 1 Channel Cat 1 White Crappie 5 Black Bullheads (PR-2) Poplar River - First Crossing Upstream of the Long Creek Confluence 10 net days 1 Goldeye 1 Redhorse 1 Carpsucker 2 Small Mouth Bass (280, 88 mm) 4 Suckers Assorted Stonecats and Black Bullheads (PR-3) Poplar River Approximately 15 Miles Downstream from Scobey 14 net days 3 Goldeye (314, 317, 327 mm) 9 Walleye (271, 351, 430, 267, 246, 430, 247, 364, 478 mm) 10 Stonecat 4 Redhorse Misc. Suckers and Chubs (PR-4) Poplar River - First Bridge Miles South of Scobey on Highway 13 8 net days 1 N. Pike (670 mm) 1 Stonecat 4 Common Suckers (WF-1) Poplar River - West Fork at Highway 13 Bridge 8 net days 2 Walleye (430, 355 mm) 1 N. Pike (337 mm) 3 Suckers (EF-3) Poplar - East Fork 5h Miles Upstream from Scobey 6 net days No Walleyes or Game Fish ------- Table 1 continued (EF-5) Poplar River - East Fork - 10 net days (MF-2) Poplar River - Middle Fork 4 net days First Crossing Downstream from the Canadian Border 3 Walleye (500, 271 , 245 mm) (Nets full of Dace, Chubs, Suckers, and Darters) - First Bridge Crossing Upstream from the Confluence of Middle and East Forks 5 Walleye (137, 131, 270, 235, 145 mm) ------- TABLE 2 POPLAR RIVER FISHERY INVESTIGATION JULY - AUGUST 1975 TRAP NET DATA 1 net day = 24 hour set (PR-1) Poplar River at Poplar, Montana 7 net days 1 Walleye 1 Sauger 1 Black Bullhead 9 Carpsuckers 1 White Sucker 1 Smallmouth Buffalo (PR-2) Poplar River - First Crossing Upstream of the Long Creek Confluence 8 net days 2 Walleye (454, 265 mm) 1 Sauger (255 mm) 1 N. Pike (YOY) 1 Smallmouth Bass 1 Redhorse Misc. Suckers and Chubs (PR-3) Poplar River Approximately 15 Miles Downstream from Scobey 3 Walleye (WF-1) West Fork of the Poplar River at Highway 13 Bridge 5 net days 1 Walleye (265 mm) 21 Stonecats 6 Black Bullheads 23 Common Suckers 3 Goldeye - one clipped left pelvic 1 Redhorse (WF-2) West Fork of the Poplar River 3/4 Mile Upstream from the Highway 13 Bridge 2 net days 1 Walleye (268 mm) 4 Goldeye 7 Stonecats 1 Redhorse 16 Suckers ------- -2- Table 2 continued (WF-4) West Fork of the Poplar River About Six Miles Southwest of Peerless 2 net days Numerous Suckers and Chubs (WF-5) West Fork of the Poplar River at the First Bridge Crossing Downstream From Richland 2 net days Numerous Suckers and Dace (WF-6) West Fork of the Poplar River About Two Miles Upstream From Richland 2 net days Numerous Suckers (PR-4) Poplar River at the Highway 13 Bridge Five Miles Downstream From Scobey 3 net days 2 Walleye (320, 280 mm) 2 N. Pike (550, 620 mm) (PR-5) Poplar River Approximately One Mile Downstream From the Confluence of the East Fork and the Middle Fork 4 net days 2 Walleye 2 Goldeye 1 Carp 2 Common Suckers (PR-7) Poplar River Immediately Downstream From the Confluence of the East Fork and Middle Fork 4 net days 13 Walleye (MF-1) Middle Fork Immediately Upstream From the Confluence With the East Fork 4 net days 15 Walleye 1 Goldeye 8 Common Suckers 4 Redhorse (MF-2) Middle Fork at the First Road Crossing Upstream From the East Fork Confluence 4 net days 1 Walleye (190 mm) 1 N. Pike (550 mm) 2 Goldeye 116 White Suckers 3 Redhorse 1 Stonecat ------- -3- Table 2 continued (MF-3) Middle Fork at the Second Road Crossing Approximately Five Miles Upstream From the East Fork Confluence 4 net days 10 Walleye (310, 505, 310, 226, 250, 345, 370, 230, 215, 210 mm) 1 Goldeye 10 Redhorse 138 White Suckers (MF-4) Middle Fork Approximately Two Miles Downstream From the Coal Creek Confluence 1 net day No Fish (MF-5) Middle Fork at the U.S.-Canadian Border 2 net days 2 Walleye (225, 215 mm) 5 N. Pike (230, 208, 231 , 218, 215 mm) 181 White Suckers (EF-1) East Fork of the Poplar River Immediately Upstream From the Middle Fork Confluence 4 net days 11 Walleye 1 Carp 3 Carpsuckers 14 White Suckers (EF-4) East Fork Approximately Five Miles South of the. U.S.-Canadian Border 3 net days Numerous White Suckers, Chubs, Minnows, and Black Bullheads (EF-5) East Fork Approximately Two Miles South of the U.S.-Canadian Border 3 net days Numerous Redhorse, Carp, and Chubs (EF-6) East Fork Immediately Downstream From the U.S.-Canadian Border 2 net days 1 Walleye (YOY) Numerous White Suckers, Redhorse, Chubs, and Stonecats YOY- Young of the year or first year fish ------- TABLE 3 POPLAR RIVER FISHERY INVESTIGATION JULY - AUGUST 1975 SEINING DATA (PR-2) Poplar River, First Crossing Upstream of the Long Creek Confluence. Approximately 1000 ft. of Stream Seined. 1 Walleye (305 mm) 7 N. Pike (990, 790, 600, 620, 410, 460, 430 mm) 8 N. Pike (YOY) 1 Smallmouth Bass 2 Smallmouth Bass (YOY) 1 Drum (480 mm) 2 Goldeye 41 Redhorse Misc. Suckers, Carp and Chubs (PR-3) Poplar River Approximately 15 Miles Downstream from Scobey. About 1200 ft. of River Seined. 4 Smallmouth Bass (180, 180, 62, 62 mm) 4 N. Pike (191, 191, 191, 400 mm) 16 Redhorse 24 White Suckers 6 Chubs 1 Goldeye - both pelvic fins clipped (WF-2) West Fork of the Poplar River 3/4 Mile Upstream from the Highway 13 Bridge. 1000 ft. Seine Haul. 1 Smallmouth Bass (189 mm) 6 Walleye (325, 310, 295, 290, 306, 300 mm) 1 Goldeye (400 mm) - right pelvic clipped 6 White Suckers 1 Carp (WF-3) West Fork South of Four Buttes. Seined 100 yds. 85 White Suckers 12 Chubs 15 Shiners ------- -2- Table 3 continued (PR-4) Poplar River at the Highway 13 Bridge Five Miles Downstream from Scobey. Seined 300 yds. 3 Walleye (410, 282, 375 mm) 9 Goldeye 1 Carp 44 White Suckers 12 Chubs (PR-6) Poplar River at the First Bridge Downstream from the Confluence of the East and Middle Forks. About 1600 ft. of Stream Seined. 9 Walleye 3 N. Pike 3 Carp 160 White Suckers 20 Redhorse 59 Goldeye Numerous Chubs and Minnows (MF-2) Middle Fork at the First Road Crossing Upstream from the East Fork Confluence. 1000 ft. of Stream Seined. 5 Walleye 1 Carp 18 White Suckers (EF-2) East Fork at the First Highway 13 Bridge North of Scobey, Upstream from the U.S.G.S Gaging Station. 220 ft. of Stream Seined. 1 Walleye (320 mm) 81 White Suckers 7 Goldeye 24 Chubs (EF-3) East Fork at the First Crossing One Mile East of Highway 13 and 5h Miles North of Scobey. 700 ft. of Stream Seined. 3 N. Pike* (480, 620, 660 mm) 1 Walleye (300 mm) 49 Goldeye 3 Common Suckers * 3 additional No. Pike were lost when net was snagged Y0Y- Young of the year or first year fish ------- TABLE 4 POPLAR RIVER FISHERY INVESTIGATION JULY - AUGUST 1975 ELECTROFISHING DATA (EF-5) East Fork Immediately Downstream From the U.S.-Canadian Border. 900 ft. of Stream Shocked. 30 White Suckers Numerous Small Shiners (EF-2) East Fork at the First Highway 13 Bridge North of Scobey. About 600 ft. of Stream Shocked. 1 Walleye (170 mm) 37 White Suckers 2 Carp 7 Chub ------- TABLE 5 SAMPLING STATION LOCATIONS ON THE POPLAR RIVER 1975 Station No. Description PR-1 Poplar River at Poplar, Montana. PR-2 Poplar River at the first crossing upstream from the Long Creek confluence. PR-3 Poplar River approximately 15 miles downstream from Scobey, Montana. WF-1 West Fork of the Poplar River at Highway 13 Bridge. WF-2 West Fork of the Poplar River 3/4 mile upstream from the Highway 13 Bridge. WF-3 West Fork of the Poplar River about 13 miles South of Four Buttes. WF-4 West Fork of the Poplar River about six miles South- west of Peerless, Montana. WF-5 West Fork of the Poplar River at the first bridge crossing downstream from Richland, Montana. WF-6 West Fork of the Poplar River two miles upstream from Richland, Montana. PR-4 Poplar River at the Highway 13 Bridge five miles downstream from Scobey. PR-5 Poplar River approximately one mile downstream from the confluence of the East and Middle Fork. PR-6 Poplar River at the first bridge downstream from the East and Middle Forks confluence. PR-7 Poplar River immediately downstream from the East and Middle Forks confluence. MF-1 Middle Fork immediately upstream from the confluence with the East Fork. MF-2 Middle Fork at the first road crossing upstream from the East Fork confluence. ------- Table 5 (continued) Station No. Description MF-3 Middle Fork at the second county road crossing approximately five miles upstream from MF-2. MF-4 Middle Fork about two miles downstream from the Coal Creek confluence. MF-5 Middle Fork at the U.S.-Canada border. EF-1 East Fork of the Poplar River immediately upstream from the Middle Fork confluence. EF-2 East Fork at the first Highway 13 Bridge North of Scobey, upstream from the U.S. Geological Survey gaging station. EF-3 East Fork at the first crossing one mile East of Highway 13 and 5h miles North of Scobey. EF-4 East Fork approximately five miles South of the U.S.-Canada border. EF-5 East Fork about two miles South of the U.S.-Canada border. EF-6 East Fork immediately downstream from the U.S.- Canada border. ------- TABLE 6 POPLAR RIVER SURVEY CHEMICAL DATA MAY 12 & 18 - 1975 Station Date D.O. Cond. TSS TDS Sodium No. Yr/Mo/Day Temp. °C (ppm) pH (micromhos) (mq/a.) (mq/iQ (mq/t.) PR-1 75/05/12 - - - - - - - 75/05/18 17.0 8.0 8.2 1100 - - - PR-2 75/05/12 16.5 8.9 7.9 1020 _ - 53 75/05/18 14.5 8.3 8.2 1075 12 684 ' 161 WF-1 75/05/12 17.0 8.6 7.9 805 _ - 139 75/05/18 15.5 8.4 7.9 1000 8 606 178 PR-4 75/05/12 15.0 9.0 7.9 945 _ _ 105 75/05/18 15.5 8.1 7.4 925 21 556 54 MF-2 75/05/12 14.5 8.5 7.9 880 44 75/05/18 16.0 7.6 8.1 1100 18 630 114 EF-6 75/05/12 16.5 10.5 8.4 890 _ _ 60 75/05/18 15.5 9.5 8.4 675 14 430 52 ------- TABLE 7 POPLAR RIVER SURVEY CHEMICAL DATA AND FLOWS JULY 29 & 31, August 5-1975 Station No. Date Yr/Mo/Day Temp. °C D.O. (ppm) PH Cond. (micromhos) TSS (mq/a) TDS (mq/O PR-1 75/07/29 28.0 8.5 1600 24 1030 75/07/31 23.0 5.1 8.5 1600 18 986 75/08/05 20.0 - 8.7 1575 34 1080 PR-2 75/07/29 26.0 7.5 _ 1800 40 1200 75/07/31 22.0 5.7 8.6 1650 62 1160 75/08/05 19.0 6.3 8.7 1750 26 1180 WF-1 75/07/29 30.0 8.4 - 1200 29 770 75/07/31 19.0 6.8 8.1 1650 10 756 75/08/05 22.0 - 8.9 1190 30 752 WF-4 75/07/29 28.0 12.4 8.5 1038 10 830 75/07/31 22.0 10.3 9.2 940 5 784 75/08/05 22.0 10.4 9.3 1275 8 786 PR-4 75/07/29 28.0 7.5 8.5 2200 37 1480 75/07/31 18.0 - 7.0 2100 18 1420 75/08/05 22.0 6.4 8.8 2000 30 1440 MF-2 75/07/29 25.0 5.4 9.2 1700 36 1040 75/07/31 22.0 6.3 9.0 1600 24 1040 75/08/05 22.0 7.4 9.1 1550 33 1050 MF-3 75/07/29 26.0 6.9 9.8 1450 41 890 75/07/31 21.0 6.0 8.9 1375 55 872 75/08/05 20.0 7.4 8.9 1375 76 916 MF-5 75/08/05 20.0 1 5.6 9.1 2000 4 1410 EF-5 75/07/29 24.0 5.2 6.5 2410 12 1650 75/07/31 20.0 4.5 7.0 2300 10 1640 75/08/05 22.0 6.4 9.0 2150 23 1520 Flows (c.f.s.) 35.0 4.0 0.0 24.0 3.0 19.0 ------- TABLE 8 POPLAR RIVER SURVEY, CHEMICAL ANALYSIS OF ACID RECOVERABLE METALS JULY 29 & 31, August 5 - 1975 Station No. Date Yr/Mo/Day Chemical Parameters (uQ/s.) Sodi um Se As A1 Fe Cu Ca Mq Zn B PR-1 75/07/29 331,000 <10 <25 600 750 4 25,600 35,000 <5 1800 75/07/31 310,000 <10 <25 900 1100 6 28,400 38,500 10 1600 75/08/05 331,000 <10 <25 1600 1450 6 27,600 44,500 15 1400 PR-2 75/07/29" 351,000 <10 <25 700 900 4 24,600 41 ,500 5 2300 75/07/31 320,000 <10 <25 2500 1400 8 24,600 41 ,500 10 1700 75/08/05 331,000 <10 <25 1300 850 6 23,600 48,000 <5 2100 WF-1 75/07/29 258,000 <10 <25 400 700 <2 11,800 16,000 <5 1150 75/07/31 279,000 <10 <25 400 550 <2 13,800 19,000 <5 1100 75/08/05 248,000 <10 <25 300 250 <2 11,800 16,000 <5 1000 WF-4 75/07/29 269,000 <10 <25 <50 250 <2 8,800 19,000 5 1350 75/07/31 289,000 <10 <25 100 250 <2 8,800 16,000 5 1200 75/08/05 248,000 <10 <25 300 250 <2 11,800 16,000 <5 500 PR-4 75/07/29 444,000 <10 <25 800 750 4 17,600 28,500 10 3400 75/07/31 444,000 <10 <25 700 750 6 25,600 60,500 5 2500 75/08/05 403,000 <10 <25 1000 900 6 28,400 51,000 <5 3000 MF-2 75/07/29 258,000 <10 <25 800 800 <2 23,600 41,500 5 2000 75/07/31 320,000 <10 <25 900 800 6 24,600 32,000 <5 1600 75/08/05 310,000 <10 <25 1100 1100 8 27,600 44,500 5 1600 MF-3 75/07/29 248,000 <10 <25 1100 1150 6 29,400 48,000 10 1900 75/07/31 269,000 <10 <25 1800 1500 4 33,400 32,000 10 1400 75/08/05 279,000 <10 <25 2100 2600 6 32,400 45,000 10 1100 MF-5 75/08/05 351 ,000 <10 <25 300 200 4 42,200 79,500 < 5 1500 EF-6 75/07/29 465,000 <10 <25 <50 400 6 30,400 67,000 15 3250 75/07/31 475,000 <10 <25 300 450 6 33,400 41,500 10 3700 75/08/05 486,000 <10 <25 200 550 6 38,400 67,000 5 2500 ------- |