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I <br />strips be allowed, only counting the narrow strip as hardcover. The <br />City’s experience has been that residents soon find the grass pavers or <br />tire strips unacceptable, and a paved driveway soon appears in their <br />place. <br />Tops of Retaining Walls. Because retaining walls typically have a <br />defined width of surface ranging from 6-12" or more, they may result <br />in a significant square footage of hardcover. However, randomly <br />spaced boulder walls, while considered as hardcover are difficult to <br />measure as to ground surface area covered, and they may in some cases <br />act to evenly distribute rainfall throughout their footprint... <br />Overhangs. Because Council never came to a conclusion as to when <br />overhangs should be considered hardcover, staff arbitrarily has <br />determined that all overhangs supported by posts are hardcover, <br />measured to the outer edge of the post. Unsupported overhangs more <br />than 10 feet above ground and 3 feet or less in width, will not be <br />considered hardcover. It can then be argued that any unsupported <br />overiiang with a height-to-width ratio of 3.33-to-l or greater should not <br />be considered hardcover. <br />Pool Water Surface. The water surface of a swimming pool or <br />decorative pool normally will store the rain falling on it rather than <br />discharging it as runoff. However, such pools do not allow infiltration <br />of the rainfall, hence they 'interfere with the direct absorbticn of <br />rainfall into the ground', and by definition must be considered as <br />hardcover. <br />C. No ’’Partial Hardcover ” <br />To date staff has avoided establishing "partial hardcover" status for <br />certain items such as decks or fabric which technically permeable <br />but which have been declared as hardcover for non-technical reasons. <br />Staff often receives requests to allow a percentage of such items to be <br />considered as non- hardcover, ai d while staff sees the logic for those <br />requests, allowing them could lead to all sorts of problems (such as <br />making hardcover calculations even more difficult than they are now, <br />or result in discussions about poking holes in plastic or defining to <br />what percent it's deteriorated) which staff is interested in avoiding if <br />possible.