CA ES Greenhouses

Recharge Rates

Level of Control and Protection (LCP)*

1

2

3

4

5

Normal Rate* (per sq. ft. per year)

$2.40

$3.48

$4.68

$6.12

$7.44

rate per month

$0.20

$0.31

$0.42

$0.52

$0.62

Additional charge for Full Service (per sq. ft. per year)

$2.06

$2.06

$2.06

$2.06

$2.06

rate per month

$0.17

$0.17

$0.17

$0.17

$0.17

Additional charge for Rice Media preparation

$0.23

$0.23

$0.23

$0.23

$0.23

Supplies

Time and materials

Time and materials

Time and materials

Time and materials

Time and materials

Soil / Media

Time and materials

Time and materials

Time and materials

Time and materials

Time and materials

*LCP Detail

LCP 1

Minimal control over the plants’ environment; primarily protection from extremes and reduction of evapotranspiration so as to manage plant stress for plant survival. Accomplished by lath house, screen house, cold-frame, etc. No environmental controls. This category also includes outdoor nursery space with or with out shading. Water and other utilities are available (although electricity might not be available). Automatic watering and fertilizing may be available for adding by the PI as an option. No treatment of incoming water can be expected at this level.

LCP 2

Moderate control of environment resulting in temperatures that are better than the outside environment. No explicit guarantee for specific levels of the particular variables. Accomplished with relatively-simple greenhouses with electro-mechanical controls for temperature, possibly some minimal level of supplemental lighting if the greenhouse has structure to support lamps. No control over many variables such as CO2, relative humidity, etc. Water supply is at most filtered; no reverse-osmosis (RO) or de-ionization (DI).

LCP 3

Greenhouse with electro-mechanical controls for temperature with the ability to keep temperatures within 10F of a set-point when outside temperatures are below 80F and above 40F. Greenhouse has structure to support some conventional supplemental lighting, which is available in the winter. Simple controls for automatic watering (timers) and fertilizer injection to provide one standard injected formula. Treatment of incoming water with RO or DI. Chart recorders are available as an option for temperature. During extreme winter conditions, air temperatures can generally be maintained above 50F.

LCP 4

Solid structure greenhouse (typically glass) that meet the criteria of level 3 except that some of the controls are electronic and logging/recording of some of the environmental variables is part of the management protocol. Electronic controllers may be available for irrigation. Shading may be provided by one or more levels of shade curtain. Supplemental lighting is available from October through April and its control is automated. Temperature is generally controlled to be within ±6 F of a set-point and expected to be at least 20F below the outside temperature on hot summer days. During extreme winter conditions, air temperatures can generally be maintained above 55F.

LCP 5

As level 4 except for the following: Temperature control consists of multi-stage computer control with 4 or more steps for heating and 4 or more steps for cooling. Complete electronic logging by environmental control computer. Independent logging is available as an option. Temperature is generally controlled to be within ±3 F of a set-point and expected to be at least 20F below the outside temperature on hot summer days. During extreme winter conditions, air temperatures can generally be maintained above 60F.

 

Student labor

Assistant II   $8.25/hour
Assistant III   $9.00/hour
Assistant IV   $10.00/hour

Contract Labor = $12.87/hour

Technican = $42.00/hour

Supervisor = $57.00/hour