(1) Within one-half mile of a public preserve (e.g., State or County park), urban growth area, school, day care or elder care facility or place of religious worship); or

(2) Within one-quarter mile of rural residential areas having an existing density greater than (more intense than) one dwelling unit per 5.1 acres except as stated herein. Such land is eligible for MRLOD status if there are no existing residences within 600 feet of the boundary of the parcel in question or any existing residence within 600 feet of the boundary of the parcel proposed for mining is also owned by the mining applicant. Land exceeding the density of one dwelling unit per 5.1 acres may obtain an MRL designation if a noise study is submitted demonstrating that the mineral extraction and processing activity will not exceed maximum permissible noise levels found in Chapter 173-60 WAC at the nearest residence or place of business.