SR 06:208 - Laserfiche WebLink

The Dublin San Ramon Services District currently monitors sewage effluent. The treatment plant produces secondary effluent which is pumped to San Francisco Bay, tertiary effluent which is used primarily for landscape watering in commercial areas, and sludge which is decomposed and then buried nearby. The District monitors secondary effluent on a daily basis and monitors the sewage transport system for pH levels (a measure of acidity or alkalinity) and hydrogen sulfide. At its sewage ponds site the District operates numerous test wells that have shown no toxic material intrusion on the soil content. See Wastewater in the Public Facilities Element for additional discussion of wastewater treatment. Stormwater Runoff Historically, the City has focused stormwater runoff management efforts on reducing downstream flooding risks by providing storm-drain systems in developed areas. However, stormwater runoff also carties urban pollutants, which create water-quality problems in downstream water bodies and which, in turn, impact aquatic life and the overall ecosystem health. Because the Federal Clean Water Act requires municipalities to implement stormwater management programs, the City prepared the Phase I Storm Water Program in 1989 and Phase II program in 200l. To protect water quality, municipalities - under new established rules - must obtain a National Pollution Discharge Elimination System (NPDES) pennit for developing and implementing a stormwater management program. The stormwater management program must include the following "control measures" for reducing the quantity of pollutants that stormwater picks up and carries into the stormwater system: Public Education and Outreach, Public Participation/Involvement, Illicit Discharge Detection and Elimination, Construction Site Runoff Control, Post-Construction Runoff Control, and Pollution Prevention / Good Housekeeping. These control-measure programs target reducing stormwater pollution in storm-drain systems and creeks, which eventually flow into water bodies including the San Francisco Bay. To implement Phase I and II rules under the Clean Water Act, Alameda County established a county-wide water program to guide cities in establishing "control measure" programs. The City of Pleasanton actively participates in this program and has joined other Bay Area communities in implementing the clean water runoff pennit provisions. The City recognizes that new stormwater quality controls and development requirements may add cost to development projects and business operations. Therefore, as development occurs, Pleasanton is attempting to balance the objectives of meeting clean-water program mandates utilizing biological methods - such as vegetated swales and bio-retention ponds - along with encouraging economic development and business retention. See the Public Facilities Element discussion of stormwater drainage and flood control facilities along with related policies and programs. As discussed therein, Zone Ts Stream Management Master Plan 3 Con OS Element, CC 082906, clean VII-13 City Counci18/29/2006