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gauge (psig) with a target value of 50 psig. A diesel freeze blanket of <br />approximately one barrel may be placed on the backside to prevent freezing and <br />possible equipment failure. <br />D. MONITORING, RECORDKEEPING, AND REPORTING OF RESULTS <br />1. I>?lection Well Monitoring Proogram. Samples and measurements shall be <br />representative of the monitored activity. The permittee shall utilize the applicable <br />analytical methods described in Table I of 40 CFR § 136.3, or in Appendix III of 40 <br />CFR Part 261, or in certain circumstances, by other methods that have been <br />approved by the EPA Administrator. Monitoring shall consist of: <br />(a} Sampling and analysis of injection fluids. Analysis of the injection fluids <br />for the first year of injection shall be performed quarterly and whenever <br />there is a change in the source of injection fluids. After the first year of <br />injection, samples shall be taken twice a year except when there is a change <br />of source. If the data collected in the first yeaz demonstrate that some <br />constituents are at insignificant levels (below or close to detection level) or <br />aze at consistent levels (less than 10% variation between samples), the <br />operator may request a minor modification to modify the sampling <br />requirements to eliminate or reduce the sampling for specific items. The <br />injection fluid shall be sampled from the injection line downstream ofthe <br />storage tanks. <br />The samples shall be analysed for the following parameters: <br />cazbonate (by colorimetry or other method to be determined), bicazbonate <br />(by colorimetry or other method to be determined},total dissolved solids <br />(TDS), pH, specific conductivity, specific gravity, dissolved sodium, <br />dissolved chloride, dissolved boron, dissolved barium, dissolved <br />calcium, dissolved magnesium, dissolved sulfate, dissolved fluoride, and <br />dissolved potassium. <br />(b) Continuous monitoring of flow rate and cumulative volume. The <br />instrumentation shall be capable of recording at least one value for each of <br />the pazameters at least every one (1) minute. Initially, recordings shall be <br />made once every ten (10) minutes. Monitoring must occur whether or not <br />fluids aze being injected. This information shall be analyzed in the first <br />annual report to determine if this frequency is representative of the injection <br />activity. A minor modification to the Permit shall be made to increase the <br />frequency of recording if the variability of the injection volume and rate (as <br />warranted by the data results} affects the representative nature of the data. A <br />minor modification to the Permit maybe made to decrease the frequency of <br />recording if the Director determines that the fluctuation of the parameters is <br />such that less frequent data collection would not significantly affect the <br />EPA Draft Permit No. CO 10932-04664 Page 14 of 77 <br />