What are the hours for Noise regulations?

 Construction noise is regulated by State Minnesota Pollution control standards which states construction noise hours are:  Monday-Friday 7 a.m. - 9 p.m. , Saturday/Sundays/Holiday 9 a.m. - 5:00 p.m.  The statute refers to noise at sustained decibel levels of 65 or greater, Level 1 housing areas.  This reference within the North Oaks noise regulations is under Ordinance 151.032.