~J <br />L J <br />I <br />i <br />Preferred Parking Lot Scenario <br />(with permeable pavement) <br />i ~ 7 iln j .1 <br />s F J <br />i <br />Rainwater is stored temporarily and percolates <br />through gravel into the earth. <br />[ <br />' <br />4 <br />t <br />l t ,,,r r. , ^ <br />A <br />Chemicals and contaminants percolate through <br />~ <br />& <br />gravel into the earth, being filtered and broken down <br />- <br />,1 <br />V/ <br />by microorganisms. <br />Minimal runoff travels into the swale <br />u~ <br />t~ <br />' <br />i <br />. <br />4 a i <br />•p,t» st <br />.i , l <br />r <br />The swale is not overfilled, supports, healthy plant life, <br />and promotes percolation of water into the earth. <br />o , b <br />t Undesirable Parking Lot Scenario <br />a a e <br />. > <br />(with mud and/or impervious pavement) <br />i <br />. <br />a 4 n t <br />t 3' ! G ~ <br />il <br />Rainwater travels directly to the Swale, causing ero- <br />sion and overfilling the swale. <br />{ <br />k a i , <br />s a <br />Chemicals, contaminants, and silt/mud flow directly <br />into the swale. <br />lz~ <br />z > <br />The swale is overfilled - silt, mud, and contaminants <br />l <br />d <br />3 <br />E;_ <br />accumu <br />ate an <br />are not able to percolate into the <br />r - <br />earth. <br />o <br />Illustration 03: Gravel parking diagram. <br />McCamant & Durrett Architects Page 3 <br />5/6/13 <br />: 1329 <br />Illustration 02: ,Parking area in Nevada City, CA. <br />