Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
Appendix - Table 11 to Subpart G of Part 63—Wastewater—Inspection and Monitoring Requirements for Waste Management Units
To comply with Inspection or monitoring requirement Frequency of inspection or monitoring Method
Tanks:
63.133(b)(1)Inspect fixed roof and all openings for leaksInitially Semi-annuallyVisual.
63.133(c)Inspect floating roof in accordance with §§ 63.120 (a)(2) and (a)(3)See § 63.120 (a)(2) and (a)(3)Visual.
63.133(d)Measure floating roof seal gaps in accordance with §§ 63.120 (b)(2)(i) through (b)(4)See § 63.120 (b)(2)(i) through (b)(4).
—Primary seal gapsOnce every 5 years Initially Annually
—Secondary seal gaps
63.133(f) 63.133(g)Inspect wastewater tank for control equipment failures and improper work practicesInitially Semi-annuallyVisual.
Surface impoundments:
63.134(b)(1)Inspect cover and all openings for leaksInitially Semi-annuallyVisual.
63.134(c)Inspect surface impoundment for control equipment failures and improper work practicesInitially Semi-annuallyVisual.
Containers:
63.135(b)(1), 63.135(b)(2) (ii)Inspect cover and all openings for leaksInitially Semi-annuallyVisual.
63.135(d)(1)Inspect enclosure and all openings for leaksInitially Semi-annuallyVisual.
63.135(e)Inspect container for control equipment failures and improper work practicesInitially Semi-annuallyVisual.
Individual Drain Systems a:
63.136(b)(1)Inspect cover and all openings to ensure there are no gaps, cracks, or holesInitially Semi-annuallyVisual.
63.136(c)Inspect individual drain system for control equipment failures and improper work practicesInitially Semi-annuallyVisual.
63.136(e)(1)Verify that sufficient water is present to properly maintain integrity of water sealsInitially Semi-annuallyVisual.
63.136(e)(2), 63.136(f)(1)Inspect all drains using tightly-fitted caps or plugs to ensure caps and plugs are in place and properly installedInitially Semi-annuallyVisual.
63.136(f)(2)Inspect all junction boxes to ensure covers are in place and have no visible gaps, cracks, or holesInitially Semi-annuallyVisual or smoke test or other means as specified.
63.136(f)(3)Inspect unburied portion of all sewer lines for cracks and gapsInitially Semi-annuallyVisual.
Oil-water separators:
63.137(b)(1)Inspect fixed roof and all openings for leaksInitially Semi-annuallyVisual.
63.137(c)Measure floating roof seal gaps in accordance with 40 CFR 60.696(d)(1)Initially bSee 40 CFR 60.696(d)(1).
—Primary seal gapsOnce every 5 years
63.137(c)—Secondary seal gapsInitially b Annually
63.137(d)Inspect oil-water separator for control equipment failures and improper work practicesInitially Semi-annuallyVisual.

a As specified in § 63.136(a), the owner or operator shall comply with either the requirements of § 63.136 (b) and (c) or § 63.136 (e) and (f).

b Within 60 days of installation as specified in § 63.137(c).

authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.