Page 12 U.S. Water Quality Trends, 1963-72 Percent of reaches Parameter Reference level ' exceeding reference levels 1963-72 1968-72 Change Suspended solids .80mg/1-aquatic life 2 26 14 -12 Turbidity 50JU-aquatic life 2 28 28 0 T~mperature 90°F-aquatic life 2 0 0 0 Color 75 platinum-cobalt unitswater supply 3 0 0 0 Ammonia 0.89mg/1-aquatic life a 16 6 -10 Nitrate (as N) 0.9mg/1-nutrient • 12 24 +12 Nitrite plus nitrate 0.9mg/1-nutrient • 18 26 +8 Total phosphorus 0.1 mg/1-nutrient2 34 57 +23 Total phosphate 0.3mg/1-nutrient 2 30 41 +11 Dissolved phosphate 0.3mg/l-nutrient 2 11 22 +11 Dissolved solids 500mg/1-water supply 2 25 18 -7 (105°C) Dissolved solids 500mg/1-water supply 2 28 12 -16 (180°C) Chlorides 250mg/1-water supply a 12 9 -3 Sulfates 250mg/1-water supply a 12· 12 0 pH 6.0-9.0-aquatic life 2 0 0 0 Dissolved oxygen 4.0mg/1-aquatic life 2 0 0 0 Total coliforms(MFD) • 10,000/100ml-recreation 2 24 13 -11 Total coliforms(MFI) • 10,000/100ml-recreation 2 50 30 -20 Total coliforms(MPN) • 10,000/lOOml-recreation 2 23 20 -3 Fecal coliforms(MF) • 2,000/100ml-recreation a 45 21 -24 Fecal coliforms(MPN) • 2,000/100ml-recreation 17 43 +26 Phenols 0.001mg/1-water supply 3 86 71 -15 1 Levels associated with water quality protection for each parameter and type of water use. s Guidelines for Developing or Revising Water Quality Standards, EPA Water Planning Division, April 1973. • Criteria lor Water Quality, EPA, 1973 (Section 304(a)(1) guidelines). • Biological Associated Problems in Freshwater Envlfonments, FWPCA, 1966, pp. 132-33. • Membrane filter delayed, membrane filter 1mmef!iate, most probable number, membrane filter. Source: Environmental Protection Agency, National Water Quality Inventory: Report to Congreu, (1974). WATER (continued from page 11) €VHOLE SYSTEM9 Portland Noise Ordinance. The revised ordinance is now available for public discussion . Paul Herman Neighborhood Environment City of Portland 2040 S.E. Powell Blvd. Portland, Or. 97202 248-4465 Co-Evolution Quarterly 558 Santa Cruz Menlo Park, Ca. 94025 $6/yr. The winter solstice issue ($2) contains some of the most apt and farreaching environmental information and guidance around. As well as Whole Earth Epilog updates. Also some unpublished work by Gregory Bateson (and his call for a conference on power - not energy, that too); Warren McCulluch, Lewis Mumford. Apocalypse juggernaut, hello. Energetics shortcomings, man made planets, lunaception, preventive dentistry. The Cumberland General Store Tools that last because they HA VE lasted, available new from where they're still manufactured. A better investment than gold. We've never seen a finer catalog. The Cumberland General Store Wish and Want Book 1974; 245pp. $3.00 postpaid from: Cumberland General Store Route 3 Box 479 Crossville. TN 38555 t - SB "'SOOTLESS SUE" DRUM OVEN with Thermometer & Soot ~~n:;coE,'fo"!Ps~~~t~~hbf:c"~~;~ .P';.~a'":t~~~~~emk~ic~:n for baking and warming foods. In other rooms with the oven door open, it acts as a radiator and throws off a surprising amount of heat at no additional expense. Merely tum the crank in the back of the oven and blades revolve between walls for soot removal. Size; 16 in. long x 1C in. cliam., Cookie sheet 10 x 13 ins.• Pipe collar; 6 inch diameter. Shippinc wt. · 12 lb. H53·1TC-$33.00. February 1975 Environmental Information Sources Handbook. Garwood R. Wolff, editor. Simon & Schuster. This 5 60-page directory is the best I've seen because it gives enough detail per entry, and defines environment to include architecture, energy in many ways, agriculture, and, of course, gamma rays and bird watching. Organizations, newsletters, trade journals, federal, regional, state, interstate agencies, study centers. Doesn't include very many little things. An invaluable library tool. Wind Power Digest Access to Wind Energy Systems Rt. 2, Box 489 · Bristol, In. 46507 $2 postpaid. Available some time in February. Hardware and literature (plans (plans, kits, etc.) review. (Mike Evans, Wind Power Digest) Eros Data Center Sioux Falls, S.D. 57198 The center offers image products from the Earth Resources Technology Satellite; some high flight general aerial and skylab. Prices, for example, 29.2" paper positive photograph, $12; $2 for film negative (2.2 "). It is not a simple catalog type order. You have to make decisions like maximum acceptable cloud cover, latitude and longitude, time of year, etc. (sometimes ERTS data can be disappointing without the a·id of computer analysis or aerial photography expertise- though the color may be worthwhile. a~c~~~~et,{~0;r~~~g~~~~l. r~~o;;.~d~~~t~~!~.;ui0~.ill bearinp make for easy peddlinc. -fhe pindstone (20 x 2 inches) Is of the hichest quality Ohio lrit. Shipped knocked down, frame enclosed in carton, stone crated. Combined wt. 115 lbs. GS4 -$ 13U6. d - The Homesteaders OIL f,~~ .!~h~~ Eoe~!_; fe~f':,"~s with complete material lists and construction details. Can be built without cuttlnc torch or welding equipment. Drum Forge Plan Set-$5.00 ppd From: Co-Evolution Quarterly
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