5-9-6: ACCEPTABLE LEVELS OF CONTAMINATION:
The owner shall require the certified contractor to test the levels of volatile organic compounds (VOCs), pH, mercury, lead, and methamphetamine in both the initial assessment and the postremediation assessment. Acceptable levels for each are the following:
   A.   VOCs: 0.9 parts per million or below.
   B.   pH: Surface level of 7 or below.
   C.   Mercury: 0.3 microgram per cubic meter of mercury in air or below.
   D.   Lead: Twenty (20) micrograms per square foot or below.
   E.   Methamphetamine: 0.1 microgram per one hundred (100) square centimeters or below. (Ord. 2012-379-C, 5-7-2012)