HYDRO27746

• Permit No: M1977410
• IBM Index Class Name: Hydrology
• Doc Name: REFERENCES
• Media Type: D
• Archive: No

PART I
Page 4 of 19
C. FOOTNOTES
1/ - When the most sensitive analytical method which complies with Part
I.F.2. of the permit has a detection limit greater than or equal to
the permit limit, the permittee shall report "less than the
detectable limit," as appropriate. Such reports shall not lie
considered as violations of the permit limit.
The present lowest method detection limits for specific parameters
(which have limitations which are, in some cases, less than or equal
to the detection limit) are as follows:
Total Residual Chlorine 0.05 mg/1
Total Recoverable Cadmium 0.0003 mg/1
Tata1 Recoverable Copper 0.005 mg/1
Total Recoverable Lead 0.005 mg/1
Total Mercury 0.00025 mg/1
Total Recoverable Nickel 0.05 mg/1
Total Recoverable Silver 0.0002 mg/1
Total Recoverable Zinc 0.05 mg/1
The present lowest method detection limits for the dissolved and also
potentially dissolved metal parameters are the same as indicated above
for the total recoverable parameters.
m/ - Fecal coliform bacteria average concentrations shall be determined by
the geometric mean of all samples collected during a thirty (30)
consecutive day period. The 7 day average shall be determia.ed by the
geometric mean of all samples taken during a seven (7) day period.
n_/ - The potentially dissolved metal fraction Ss defined in The Pasic
Standards and Methodololties for Surface Water 3.1.0 (5 CCR 1.002-8)
as: that portion of a constituent measured from the filtrate of a
water and suspended sediment sample that was first treated with
nitric acid to a pH of 2 or less and let stand for 8 to 96 hours
prior to sample filtration using a 0.4 or 0.45-UM membrane filter.
Note the "potentially dissolved" method cannot be used where nitric
acid will interfere with the analytical procedure used for the
constituent measured.
Code: i - 17 Date: 9-84, revised 12-87, revised 8-89