2012-06-08_PERMIT FILE - C2009087A (2)

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PART I Page No. 9 Permit No.: C00048275 Self - monitoring sampling by the permittee for compliance with the monitoring requirements specified above shall be performed at the following locations: Outfalls 002, 003 and 004, at the outfalls of the sedimentation ponds prior to entering the immediate receiving waters. If the permittee, using the approved analytical methods, monitors any parameter more frequently than required by this permit, then the results of such monitoring shailbe included in the calculation and reporting of the values required in the Discharge Monitoring Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated. 2. Monitorine Exemptions: For Outfall 004, during the winter season, monitoring may be suspended at the permittee's option when adverse weather conditions prohibit safe access to the discharge point at the frequencies specified in this subpart. Monitoring shall recommence at the first opportunity after such inaccessibility ends. When inaccessibility prevents sample collection, the permittee shall document what monitoring was missed and the specific conditions that prevented access in cover letters to the appropriate Discharge Monitoring Reports. 3. Salinity Parameters In order to obtain an indication of the quantity of Salinity, measured as total dissolved solids (TDS), being discharged from the site the permittee shall monitor the wastewater effluent at the frequencies given in the tables above. Self - monitoring samples taken in compliance with the monitoring requirements specified above shall be taken at those locations listed in Part I.B.1. Where, based on a minimum of 5 samples, the permittee demonstrates to he satisfaction of the Division that the level of total dissolved solids (TDS) in the effluent can be calculated based upon the level of electrical conductivity, the permittee may measure and report TDS in terms of electrical conductivity. C. DEFINITIONS OF TERMS 1. "Chronic lethality" occurs when a statistically significant difference, at the 95% confidence level, occurs in the chronic tat between the mortality of the test species in 100% effluent (the chronic IWC = 100 %) and the control. 2. "Composite" sample is a minimum of four (4) grab samples collected at equally spaced two (2) hour intervals and proportioned according to flow. 3. "Continuous" measurement, is a measurement obtained from an automatic recording device which ontinually measures provides measurements. 4. "Daily Maximum limitation" means the limitation for this parameter shall be applied as an instantaneous maximum (or, for pH or DO, instantaneous minimum) value. The instantaneous value is defined as the analytial result of any individual sample. DMRs shall include the maximum (and/or minimum) of all instantaneous values within the calendar month. Any instantaneous value beyond the noted daily maximum limitation for the indicated parameter shall be considereda violation of this permit. 5. "Dissolved (D) metals fraction" is defined in the Basic Standards and Methodologies for Surface Water 1002 -31, as that portion of a water and suspended sediment sample which passed through a 0.40 or 0.45 UM (micron) membrane flter. Determinations of "dissolved" constituents are made using the filtrate. This may include some very small (colloidal) suspended particles which passed through the membrane filter as well as the amount of substance present in true chemical solution. 6. "Grab" sample, is a single "dip and take" sample so as to be representative of the parameter being monitored. 7. "In- situ" measurement is defined as a single reading, observation or measurement taken in the field at the point of discharge.