Health and Safety Code section 9631

Where any wall is constructed against a bank of earth, rock, or other porous material, or where crypts are adjacent to an outside building wall below grade, the wall shall be adequately waterproofed. Before backfilling, a waterproofed wall shall have a protection board placed against it to prevent damage to the waterproofing during backfilling.

Source: Section 9631, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=HSC§ionNum=9631.­ (updated Jan. 1, 1994; accessed Jul. 28, 2025).

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Verified:
Jul. 28, 2025

§ 9631's source at ca​.gov