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2.u ENVIRONMENTAL CHECKLIST over the next several decades. With implementation of this Project, the WPCP water dedicated to irrigation of the Oyster Bay Regional Park, Marina Bay/Par Course, Monarch Bay Golf Complex, and roadway medians will qualify as disinfected secondary-23 recycled and disinfection tertiary. Disinfected secondary-23 recycled water is recycled water that has been oxidized and disinfected so that the median concentration of total coliform bacteria in the disinfected effluent does not exceed a most probable number (MPN) of 23 per 100 milliliters utilizing the bacteriological results of the last seven days for which analysis have been completed, and the number of total coliform bacteria does not exceed an MPN of 240 per 100 milliliters in mare than one sample in any 30 day period. Disinfected tertiary recycled water is filtered and subsequently disinfected wastewater that meets the following criteria: (a) the frltered wastewater has been disinfected by either: (1) a chlorine disinfection process following filtration that provides a CT (the product of total chlorine residual and modal contact time measured at the same point) value of not less than 450 milligram-minutes per liter at all times with a model contact time of at least 90 minutes, based on peak dry weather design flow; or (2) the median concentration of total coliform bacteria measured in the disinfected effluent does not exceed an MPN of 2.2 per 100 milliliters utilizing the bacteriological results of the last seven days for which analyses have been completed and the number of total coliform bacteria does not exceed an MPN of 23 per 100 milliliters in more than one sample in any 30 day period. No sample shall exceed an MPN of 240 total coliform bacteria per 100 milliliters. The DHS has also produced Guidelines for Use of Reclaimed Water, which apply to recycled water use areas receiving water, that meets Title 22 Water Recycling Criteria. The guidelines focus on application and management specifications for various recycled water uses, including general use requirements, landscape irrigation requirements, impoundment requirements, and agricultural reuse area guidelines (DHS, 1988), General requirements include: ^ Posting signs to inform the public in areas where recycled water is in use; ^ Confining recycled water to authorized use areas; ^ Use of purple recycled water distribution and transmission system piping to indicate that it contains recycled water; and ^ Other requirements designed to ensure that recycled water use does not adversely affect public health. Specific requirements established by Title 22 that are applicable to the Project are contained in Article 4, Section 60310 -Use Area Requirements. This section precludes irrigation of disinfected tertiary recycled water within 50 feet of any domestic water supply well, and prohibits the over-application or any direct runoff of applied recycled water. Project implementation would not be anticipated to affect surface water quality, as golf course operators would be required to comply with Title 22 requirements regarding the prohibition of direct runoff to adjacent waterways. The City could provide additional operational guidelines and work with the end users to implement the guidelines to guide- further over spraying and ponding. Additionally for this Project, recycled water used for irrigation would be of very high quality, with an estimated total dissolved solids (TDS) of 580 milligrams per liter (mg/1). Additionally, nitrates in the recycled water are readily taken up by plants, although over-application of recycled water could result in the percolation of recycled water through the root zone and into the soil column. Recycled water could potentially contain trace amounts of pharmaceutical compounds such as antibiotics, steroids, antidepressants, painkillers, estrogen and other hormones (endocrine San Leandro Recycled Water Project 2-31 FSA / 203193 Draft ISMQ~ID