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Pagel of 3
<br />Stacy Rivera [EH]
<br />From: Stacy Rivera [EH]
<br />Sent: Monday, April 18, 2011 10:51 AM
<br />To: 'ndavidson@acmeequip.com'
<br />Subject: Hazardous Waste Tank Assessements
<br />§66265.192. Design and Installation of New Tank Systems or Components.
<br />(a) Owners or operators of new tank systems or components shall ensure that the foundation, structural support, seams, connections, and pressure
<br />controls (if applicable) are adequately designed and that the tank system has sufficient structural strength, compatibility with the waste(s) to be
<br />transferred, stored or treated, and corrosion protection so that it will not collapse, rupture, or fail. The owner or operator shall obtain a written
<br />assessment reviewed and certified by an independent, qualified, professional engineer, registered in California in accordance with section 66270.11(d)
<br />attesting that the system has sufficient structural integrity, is acceptable for the transferring, storing and treating of hazardous waste, and that the tanks
<br />and containment system are suitably designed to achieve the requirements of this article. This assessment shall be obtained prior to placing the tank
<br />system in service, and shall be kept on file at the facility. This assessment shall also include, at a minimum, the following information:
<br />(1) design standard(s) according to which the tank(s) and ancillary equipment are or will be constructed;
<br />(2) hazardous characteristics of the waste(s) to be handled;
<br />(3) for new tank systems or components in which the external shell of a metal tank or any external metal component of the tank system is or will be in
<br />contact with the soil or with water, a determination by a corrosion expert of:
<br />(A) factors affecting the potential for corrosion, including but not limited to:
<br />1. soil moisture content;
<br />2. soil pH;
<br />3. soil sulfides level;
<br />4. soil resistivity;
<br />5. structure to soil potential;
<br />6. influence of nearby underground metal structures (e.g., piping);
<br />7. stray electric current; and,
<br />8. existing corrosion -protection measures (e.g., coating, cathodic protection), and
<br />(B) the type and degree of external corrosion protection that are needed to ensure the integrity of the tank system during the use of the tank system or
<br />component, consisting of one or more of the following:
<br />1. corrosion -resistant materials of construction such as special alloys or fiberglass -reinforced plastic;
<br />2. corrosion -resistant coating (such as epoxy or fiberglass) with cathodic protection (e.g., impressed current or sacrificial anodes); and
<br />3. electrical isolation devices such as insulating joints and flanges;
<br />(4) for underground tank system components that are likely to be affected by vehicular traffic, a determination of design or operational measures that
<br />will protect the tank system against potential damage; and
<br />(5) design considerations to ensure that:
<br />(A) tank foundations will maintain the load of a full tank;
<br />(B) tank systems will be anchored to prevent flotation or dislodgement where the tank system is placed in a saturated zone, or is located within a
<br />seismic fault zone; and
<br />(C) tank systems will withstand the effects of frost heave.
<br />(b) The owner or operator of a new tank system shall ensure that proper handling procedures are adhered to in order to prevent damage to the system
<br />during installation. Prior to covering, enclosing, or placing a new tank system or component in use, an independent, qualified installation inspector or
<br />an independent, qualified, professional engineer, registered in California, either of whom is trained and experienced in the proper installation of tank
<br />systems, shall inspect the system or component for the presence of any of the following items:
<br />(1) weld breaks;
<br />(2) punctures;
<br />(3) scrapes of protective coatings;
<br />(4) cracks;
<br />(5) corrosion;
<br />(6) other structural damage or inadequate construction or installation. All discrepancies shall be remedied before the tank system is covered, enclosed,
<br />or placed in use.
<br />(c) New tank systems or components and piping that are placed underground and that are backfilled shall be provided with a backfill material that is a
<br />noncorrosive, porous, homogeneous substance and that is carefully installed so that the backfill is placed completely around the tank and compacted
<br />to ensure that the tank and piping are fully and uniformly supported.
<br />(d) All new tanks and ancillary equipment shall be tested for tightness prior to being covered, enclosed or placed in use. If a tank system is found not to
<br />be tight, all repairs necessary to remedy the leak(s) in the system shall be performed prior to the tank system being covered, enclosed, or placed in
<br />use.
<br />(e) Ancillary equipment shall be supported and protected against physical damage and excessive stress due to settlement, vibration, expansion or
<br />contraction.
<br />(f) The owner or operator shall provide the type and degree of corrosion protection necessary, based on the information provided under subsection (a)
<br />(3) of this section, to ensure the integrity of the tank system during use of the tank system. The installation of a corrosion protection system that is field
<br />fabricated shall be supervised by an independent corrosion expert to ensure proper installation.
<br />(g) The owner or operator shall obtain and keep on file at the facility written statements by those persons required to certify the design of the tank
<br />system and supervise the installation of the tank system in accordance with Unofficial Title 22 © 2005 State of California, all rights reserved. May
<br />not be commercially reproduced or sold. 6/9/08
<br />Ch. 15, Art. 10-4
<br />the requirements of subsections (b) through (f) of this section to attest that the tank system was properly designed and installed and that repairs,
<br />pursuant to subsection (b) and (d) of this section were performed. These written statements shall also include the certification statement as required in
<br />section 66270.11(d) of this division.
<br />(h)(1) Notwithstanding subsections (a) through (g) of this section, design and installation of new tank systems or components used to manage
<br />hazardous waste, and which meet the criteria specified in subsection (h)(2) of this section, are not subject to the requirements of subsections (h)
<br />through (m) of this section until January 24, 1998. The assessment specified in subsection (k) of this section shall be obtained prior to placing a new
<br />tank system in service and shall be kept on file at the facility. This assessment shall be reviewed and certified by an independent, qualified,
<br />professional engineer, registered in California, in accordance with section 66270.11(d), attesting that the tank system has sufficient structural integrity
<br />4/18/2011
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