> 



^ 



Class D waters sluU be ussigncd only where u higlier water clussit'icalion cannot be 

 attained after utilizing the best practieable treatment or control of sewage or other wastes. 



Waters of this class may be used for power generation, navigation and industrial process 

 waters after adequate treatment. 



Dissolved oxygen of these waters shall not be less than 2.0 parts per million. I'lie 

 numbers uf coliform bacteria allowed in the.se waters shall be only those amounts which will 

 not, in the determination of the Commission, indicate a condition harmful to the public 

 health or impair any usages ascribed to this classirication. 



These waters shall be free from sludge deposits, solid refuse and lloating solids such as 

 oils, grease or scum. There shall be no disposal of any matter or substance in these waters 

 which imparts color, turbidity, taste or odor which would impair the usages ascribed to this 

 classification, nor shall such matter or substance alter the temperature or hydrogeii-ion 

 concentration of the waters to impair the usages of this classification. There shall l>e no 

 disposal of any matter or substance that contains chemical constituents which are harmful to 

 humans or which adversely affect any other water use in this class. No radioactive matter or 

 substance sirall be permitted in these waters which would be harmful to humans, aniiiul or 

 aquatic life and there shall be no disposal of any matter or substance which would result in 

 radio-nuclide concentrations in edible fish or other aquatic Ufc thereby rendering them 

 dangerous for human consumption. 



There shall be no disposal of sewage, industrial wastes or other wastes in sue h waters, 

 except those which have received treatment for the adequate removal of waste consliluenis 

 including, but not limited to, solids, color, turbidity, taste, odor or toxic material, such that 

 these treated wastes will not lower the standards or alter the usages of this classification. 

 Treated wastes discharging to these waters shall not create a pubUc nuisance as defined in 

 Title 17, Section 2802, by the creation of odor producing sludge banks and deposits or 

 other nuisance conditions. 



With .respect to all classifications hereinbefore set forth, the board may take such actions 

 as may be appropriate for the best interests of the public, when it finds that any such 

 classification is temporarily lowered due to abnormal conditions of temperature or stream 

 flow. 



R.S. 1954, c. 79, § 2; 1955. c. 425. § 5; 1959. c. 295. § 2; 1961. c. 3((5. § 3. 1903. c 

 274. § 1; 1967. c. 475. § 4; 1969. c. 431. §§ 1.2; 1972. c. 618. 



§ 363- A. Standards of classification of great ponds 



1lie board shall have 2 standards for the classification of great |K)nds 



Oass Gl'-A shall lie the highest classification and shall be of such i|Uality that it can be used 

 for recreational purposes, including bathing, and for public water supplies alter disinfection. 

 Such waters shall have a Secchi disk transparency of not less than 2.0 meters or as naturally 

 occurs, and contain not more than 20 fecal coliform bacteria per 100 milliliters, lotal phos- 

 phorus concentration shall not exceed 15 parts per billion, and chlorophyll A concentration 

 shall not exceed 8 parts per billion as measured in samples taken at or near llie surface uf llie 

 water. 



Tliese waters shall be free from sludge deposits, solid refuse, tloating sohds, oils, grea.se and 

 scum. No radioactive matter or substance shall be permitted in these waters other than that 

 occurring from natural phenomena. 



Tliere shall be no discharge of sewage or other wastes into waters of this classification 

 except as provided in section 371 -A and no deposits of materials on the shores or banks thereof 

 in a manner that could permit drainage or leaching from the material into the waters. 



Qass <;F-B, the 2nd higliest classification, shall be acceptable lor recreational purposes, 

 including water contact recreation, for use as potable water supply after adequate treatment, 

 and for a fish and wildlife habitat. The fecal coUform bacteria count is not to exceed 60 per 

 100 milhlitcrs. The total phosphorus concentration shall not exceed 50 parts per billion as 

 measured in samples taken at or near the surface of the water. 



3~B-7 



10-80 



