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LEA Advisory 20 Attachment-Inspection Guidance for SW Landfills Page 41 of 52 <br /> Example 1: Measured distance a= 20 feet, angle a= 150, angle 6= 10° and height at eye level = 5 <br /> feet 6 inches (5.5 ft). The tangent of 150 is 0.268; the tangent of 100 is 0.176. The calculation of the <br /> tire pile height(h) is: <br /> h = 20' x 0.268 x 0.176 + 5.5' <br /> 0.268-0.176 <br /> = 10.25 + 5.5' <br /> = 15.75' <br /> Method 2. Walk off a straight distance from the waste tire unit equivalent to 3X the inspectors <br /> height to eye level. See Figure 2 below. Standing at this distance facing the tire unit, the inspector <br /> can measure the angle between eye level and the top of the pile as shown in Method 1 above. This is <br /> angle " a ". The following formula may be used to compute the height(h) of the pile: <br /> h= (3X inspectors height x tangent a) +eye level ht. <br /> I <br /> I <br /> I <br /> i <br /> i <br /> l <br /> Figure 2 - method(2) of measuring tire pile height indirectly. <br /> Example 2: Eye level = 5.5 . Three times this distance is 16.5'. The angle at 16.5'from the base of <br /> http://www.clwmb.ca.gov/pe/advisory/20/attach20/20attchl.htm 8/11/98 <br />