Precious Metals Recovery LLC RCRA Permit Application Dry Hills ...

The Water Storage Tank will supply water for the processes and for domestic users. Fire water
will be pumped from the Fire Water Storage Tank to the sprinkler system in case of a fire
emergency. The Fire Water Storage Tank is an above ground concrete holding tank (see Section
1.5.5).
Sanitary wastewater is discussed in Section 1.5.6.
23.2 Secondary Containment Systems
The secondary containment system consists of spill trays, bunded areas, and the proposed TSF
Building envelope itself. The Hydrochloric Acid Storage Tank and the Caustic Soda Storage
Tank will be equipped with a secondary containment sized to hold the entire contents of the
primary tank in the event of a rupture.
All tanks located in the process area will be installed on skids outfitted with bunding to contain
any minor leaks. In the unlikely event of a tank rupture, gravity will force spilled fluids to drain
via a trench system to a sump at the process area floor level (see H340940-0000-50-015-0008 in
Appendix 1-A).
The sump will be sized to contain the entire volume of the largest tank or 10% of the total
volume of tanks in the containment area, whichever is greater. The trench and sump system is
designed to be epoxy coated, free of cracks and gaps, and impermeable to all process fluids. The
trench system will be dry during normal operation at the proposed TSF, making the entire
volume available to contain a spill.
23.3 Assessment of Existing Tank System’s Integrity – 40 CFR 264.191
As a new facility, there are no existing tank systems. This section is not applicable to the
proposed TSF.
23.4 Design and Installation of New Tank Systems or Components – 40 CFR
270.16(f) & 264.193
Proper handling techniques will be used in order to prevent damage to the systems during
installation. All tanks and ancillary equipment will be tested for tightness prior to being placed
into use. If a tank system is found not to be tight, it will be repaired or replaced.
Upon completion of construction of the proposed TSF, a written assessment will be provided to
NDEP that will address the condition of each tank’s foundation and structural support. The
assessment will also document the integrity of each tank, and its compatibility to contain wastes
to be treated, stored, and managed at the proposed TSF. Each tank system will be certified by a
qualified Professional Engineer attesting that the tank system has sufficient structural integrity
and is acceptable for storing and treating the hazardous waste for which it is intended. The
certification will be maintained in the operating record.
PMR RCRA Permit Application, Dry Hills Facility Page 125
JBR Environmental Consultants, Inc. | HATCH March 2013