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Table 5 (cont): Designated uses and standards for the San Juan basin, New Mexico 2. The monthly logarithmic mean of fecal coliform bacteria shall not exceed 100/100 ml; no single sample shall exceed 200/100 ml (see 1-103.B). 2-406. Navajo Reservoir in New Mexico A. Designated Uses: coldwater fishery, warmwater fishery, irrigation storage, livestock and wildlife watering, municipal and industrial water storage, and primary contact recreation. B. Standards: 1, At any sampling site: un-ionized ammonia (as N) shall not exceed 0.03 mg/l, dissolved oxygen shall be greater than 6.0 mg/l, pH shall be within the range of 6.6 to 8.8, temperature shall be less than 20 C (68 F), total phosphorus (as P) shall be less than 0,1 mg/l, total chlorine residual shall be less than 0.002 mg/l, and turbidity shall be less than 25 NTU. 2. The monthly logarithmic mean of fecal coliform bacteria shall not exceed 100/100 ml; no single sample shall exceed 200/100 ml (see 1-103,B). 3. The open water shall be free of algae in concentrations which cause nuisance conditions or gastrointestinal or skin disorders. 2-407. The Navajo and Los Pinos Rivers in New Mexico A. Designated Uses: coldwater fishery, irrigation, livestock and wildlife watering, and secondary contact recreation. B. Standards: 1. In any single sample: un-ionized ammonia (as N) shall not exceed 0.03 mg/l, dissolved oxygen shall be greater than 6.0 mg/l, pH shall be within the range of 6.6 to 8.8, temperature shall be less than 20 C (68 F), total phosphorus (as P) shall be less than 0,1 mg/l; and total chlorine residual shall be less than 0.002 mg/l. 2. The monthly logarithmic mean of fecal coliform bacteria shall not exceed 100/100 ml; no single sample shall exceed 200/100 ml (see 1-103.B). Taken from the New Mexico Water Quality Control Commission 1991 26