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City of RE 7.1.D. - Page 68 <br /> 1-A. On-land Visual Assessments <br /> As part of the Trash Generation Map assessment and refinement process (see Section 2.3.1),a <br /> draft on-land visual assessment method was developed to assist Permittees in confirming and <br /> refining trash generating area designations (i.e.,very high,high, moderate and low trash <br /> generating categories).The draft on-land visual assessment method is intended to be a cost- <br /> effective tool and provide Permittees with a viable alternative to quantifying the level of trash <br /> discharged from MS4s.As part of BASMAA's Tracking California's Trash grant received from the <br /> State Water Resources Control Board (see Section 4.2),quantitative relationships between <br /> trash loading from MS4s and on-land visual assessment condition categories will be established. <br /> Condition categories defined in the draft on-land assessment protocol are listed in Table 8 <br /> Table 8. Trash condition categories used in the draft on-land visual assessment protocol. <br /> Trash Condition Summary Definition <br /> Category <br /> A Effectively no trash is observed in the assessment area. <br /> (Low) <br /> B Predominantly free of trash except for a few pieces that are easily <br /> (Moderate) observed. <br /> C Trash is widely/evenly distributed and/or small accumulations <br /> (High) are visible on the street,sidewalks,or inlets. <br /> D Trash is continuously seen throughout the assessment area,with <br /> (Very High) large piles and a strong impression of lack of concern for litter in <br /> the area. <br /> On-land visual assessments will be conducted in trash management areas within the City of <br /> Redwood City as part of the SMCWPPP Pilot Trash Assessment Strategy. On-land assessments <br /> are intended to establish initial conditions and detect improvements in the level of trash <br /> available to MS4s over time. More specifically, on-land visual assessment methods will be <br /> conducted in areas not treated by trash full capture devices in an attempt to evaluate reductions <br /> associated with other types of control measures.Assessment methods for areas treated by full <br /> capture devices are described in this next section. <br /> Given that the on-land assessment method and associated protocol have not been fully tested <br /> and refined,initial assessments will occur at a pilot scale in the City and in parallel to the <br /> Tracking California's Trash project.The frequency of assessments and number of sites where <br /> assessments will occur during the pilot stage are more fully described in the SMCWPPP Pilot <br /> Trash Assessment Strategy(SMCWPPP 2014). <br /> 60 <br />