|(a) Laboratory control.
(1) Facilities. Laboratory capability for operational
control and testing shall be provided. The laboratory should be located
on ground level and easily accessible to the treatment plant and sampling
points. The laboratory should be located away from vibrating machinery
or equipment which could have an adverse effect on the performance
of the operation of laboratory instruments. The extent of the equipment
to be provided and the specific tests to be performed will vary according
to capacity and type of plant. As a minimum, provisions should be
made at all plants so that chemicals and equipment are available for
performing such on-site tests as settleable solids (Imhoff cone),
30-minute settleability, dissolved oxygen, pH, and chlorine residual.
For plants with a design flow of 1.0 mgd to 5.0 mgd, equipment shall
also be provided to determine suspended solids concentration. All
plants with design flows in excess of 5.0 mgd shall have access to
facilities to provide all permit required compliance monitoring, plus
volatile suspended solids, nitrogen series, and alkalinity determinations
(if anaerobic sludge digestion is used). Alternately, such tests may
be performed under contract with other laboratories. Special consideration,
for treatment plants located in remote or vandal prone areas, may
be given by the commission to methods for storing chemicals and analytical
equipment at an off-site location. Provisions shall be made in all
cases to provide for the requirements of the commission self-reporting
system procedures and for proper monitoring of significant industrial
connections. These requirements are minimum requirements only; additional
provisions may be needed to insure optimum plant operations. Raw waste
characterization should be provided for all facilities with a design
flow in excess of 5.0 mgd and for all facilities anticipating a plant
(2) Air conditioning. All laboratories shall be air
conditioned and heated to maintain a constant temperature.
(b) Office and toilet facilities. Hand washing facilities
should be provided for the protection of operating personnel. Office,
showers, toilets, heating, proper lighting, and ventilation shall
be provided where operators are to be stationed at the plant for operating
shifts. The needs of male and female employees, the handicapped, and
visitors to the plant should be considered in the design of sanitary
(c) Tool shed and workshop. Appropriate facilities
should be provided for the storage of tools and spare parts, and a
workshop should be provided to allow repairs and maintenance.
(d) Landscaping and beautification. Upon completion
of the treatment plant, the grounds should be properly graded for
surface drainage. Asphalt, concrete, gravel, or shell walkways should
be provided for access to all treatment units and to the final sampling
point. Where possible, steep slopes should be avoided to prevent erosion.
Surface water shall not be allowed to drain into any unit. Particular
care shall be taken to protect trickling filter beds, sludge drying
beds, and intermittent sand filters from storm water runoff. Provision
should be made for landscaping and plant site beautification, particularly
when a plant is visible to the public.