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• i <br /> MONITORING AND REPORTING PROGRAM ORDER NO. -2- <br /> OWENS-BROCKWAY AND OWENS-ILLINOIS <br /> GLASS FURNACE FACILITY <br /> SAN JOAQUIN COUNTY <br /> Parameter Units Type of Measurement Inspection Frequency <br /> Sludge depth and scum thickness Feet Staff Gauge Annually(by April _ <br /> in each compartment of each septic tank. - of each year) <br /> Distance between bottom of scum Inches Staff gauge Annually(by April <br /> layer and bottom of outlet device. of each year) <br /> Distance between top of sludge layer Inches Staff gauge Annually(by April <br /> and bottom of outlet device. of each year) <br /> Septic tanks shall be pumped when any one of the following conditions exist or may occur before the <br /> next inspection: <br /> a. The combined thickness of sludge and scum exceeds one-third of the tank depth of the first <br /> compartment: or, <br /> b. The scum layer is within three inches of the outlet device; or, <br /> c. The sludge layer is within eight inches of the outlet device. <br /> In lieu of septic tank measuring, the septic tanks may be pumped annually. <br /> LEACHFIELD MONITORING <br /> Both domestic wastewater systems.will be visually monitored. Leachfield monitoring will consist of <br /> visual inspection of the leachfield and nearby area. The leachfield and the area downslope of the <br /> leachfield shall be inspected on a monthly basis for the presence of wet areas, leachate or groundwater <br /> seepage, objectionable odors, and/or unexpected plant growth. Leachfield monitoring results shall be <br /> included with all monthly monitoring reports. <br /> PROCESS WASTEWATER EVAPORATION/PERCOLATION PONDS <br /> 11 <br /> Samples shall be collected from an established sampling station located in an area which will provide a <br /> sample representative of the wastewater in Pond No. 1. Freeboard monitoring shall be performed at all <br /> ponds. Freeboard will be measured vertically from the surface of the pond water to the lowest <br /> elevation of the surrounding berm. Holding pond monitoring shall include at least the following: <br /> Sample Sampling Reporting <br /> Constituent Units Type Frequency Frequency <br /> Flow Gallons Metered Continuous Monthly <br /> Freeboard Feet Measurement Monthly Monthly <br /> BODS mg/1 Grab Monthly Monthly <br /> Volatile Organic Compounds2 µg/1 Grab Monthly Monthly <br /> TPH—Diesel (EPA Method 8015-m) mg/l Grab Monthly Monthly <br /> Free Petroleum Product Inches Measurement Monthly Monthly <br /> pH pH units grab Monthly Monthly <br /> Specific Conductivity µmhos/cm grab Monthly Monthly <br /> Standard Minerals' mg/1 Grab Annual Annual <br />