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Long-Term Ti 7.1.D. - Page 19 <br /> As a first step,trash generation rates developed through the BASMAA Trash Generation Rates <br /> Project were applied to parcels within the City of Redwood City based on current land uses and <br /> 2010 household median incomes. A Draft Trash Generation Map was created as a result of this <br /> application.The draft map served as a starting point for the City of Redwood City to identify trash <br /> generating levels. Levels of trash generation are depicted on the map using four trash generation <br /> rate (gallons/acre/year) categories that are symbolized by four different colors illustrated in Table <br /> 3. <br /> Table 3. Trash generation categories and associated generation rates (gallons/acre/year). <br /> Category Very High Moderate Low <br /> Generation Rate > 50 5-10 <5 <br /> (gallons/acre/year) <br /> The City of Redwood City then reviewed and refined the draft trash generation map to ensure that <br /> trash generation categories were correctly assigned to parcels or groups of parcels. City staff <br /> refined maps using the following process: <br /> 1. Based upon our knowledge of trash generation and problem areas within the City,staff <br /> identified areas on the draft map that potentially had incorrect trash generation category <br /> designations. <br /> 2. Trash generation category designations initially assigned to areas identified in step#1 were <br /> then assessed and confirmed/refined by the City using the methods listed below. <br /> a. On-Land Visual Assessments <br /> To assist Permittees with developing their trash generation maps, BASMAA developed <br /> a Draft On-land Visual Trash Assessment Protocol(Draft Protocol). The Draft Protocol <br /> entails walking a street segment and visually observing the level of trash present on <br /> the roadway,curb and gutter,sidewalk,and other areas adjacent to the street that <br /> could potentially contribute trash to the MS4. Based on the level of trash observed, <br /> each segment(i.e.,assessment area) was placed into one of four on-land assessment <br /> condition categories that are summarized in Table 4. Public Works Services <br /> Department staff reviewed the preliminary Trash Generation Map provided by <br /> SMCWPPP staff and divided the map into manageable sections for field verification <br /> activities.Using the Draft Protocol,the City assessed areas of the map indicated as <br /> very high (purple),high (red) and medium (yellow) trash generating areas. <br /> Assessments were conducted by visiting these areas.The Trash Generation Map was <br /> revised to reflect the trash condition observed during the assessment. <br /> 11 <br />