EP 1110-1-27
27 Jan 00
Orifice weirs or flow meters.
Water-level probes and other instrumentation and spare components such as bolts, weir
plates, and blocking.
d. Ancillary gear. Additional parts and equipment needed on hand include:
Spare parts, pipe and hose, and pumps, which should be standardized to the extent possible.
Air compressors, generators, etc.
Hand tools.
Biofouling (BART etc.) tests and portable water quality and power testing instruments for
maintenance monitoring.
Voltage, amperage, resistance meter
These can be housed separately or on one of the field trailers or vehicles.
10-3 Provision of Maintenance Equipment
a. Large and remote projects. Sizable and more remote sites should have equipment dedicated to
the project as described in Section 10-2 and trained personnel on staff to perform maintenance. The
criterion for this threshold is when a separate well service company would devote more than three-staff
months on site per year to perform services.
b. Additional equipment and service provision options. Systems that can be serviced by qualified
commercial well service providers should do so. These companies are typically in a better position to
maintain and provide a wider range of equipment more cost-effectively than site project management.
However, particular projects, sites, and O&M contractors may have specific skills, preferences, or needs
that would result in a combination of approaches. Options include:
(1) Dedicate equipment to the site and maintain a well maintenance crew where the level of effort for well
maintenance is six staff-months per year (crew of two, dedicating three work months each).
(2) Dedicate equipment to the site and out-source well maintenance crew services (where the
level of effort for well maintenance is three to six staff-months per year). Maintaining equipment and
parts onsite ensures their availability and reduces cross-contamination potential. Onsite operational
personnel should be trained in and perform maintenance monitoring.
(3) Out-source well service entirely: Generally, where this is feasible, it is a preferred option to
avoid tying up personnel and equipment to low-frequency tasks and to take advantage of competitive
bidding. Onsite operational personnel should be trained in and perform maintenance monitoring.
c. Example costs. The costs listed in Table 10-1 are provided to offer a range of costs for well PM
planning purposes. These numbers are based on past projects and are expressed in pre-1999 dollars for the
items described in Section 10-2.
10-2
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