Environmental Engineering Reference
In-Depth Information
Figure B-52
Porous pavement testing with a water truck.
The building was constructed on the site of an existing surface parking lot, with
a small stream tributary flowing beneath the structure and partially daylighted.
The hillside woodland vegetation was protected, and directly downstream a play
field was reconstructed as an infiltration system with an open stream channel
constructed around it. The historic springs, previously piped, were conveyed in
this new channel. Overall, the design solved major university needs in a relatively
small and constricted portion of the campus.
Kaiser Permanente Hospital Complex, Modesto, CA (2003)
The town of Modesto, situated in California's San Joaquin Valley, is in the
heart of the greatest agricultural area in the country. With a year-round mild
climate, an average rainfall of only 12 in., and some of the world's richest soil,
Modesto considers itself a city of “water, wealth, contentment, and health.” Kaiser
Permanente, a 60-year-old public health care provider, constructed a regional hos-
pital and wished to comply with both LEED and evolving California criteria for
stormwater management. A stormwater management system was designed using
both porous pavement/groundwater recharge beds and vegetated recharge beds
(Figures B-51 and B-52). The 100-year frequency rainfall can be infiltrated in the
10 beds constructed, a critical factor in a hydrologic region that has experienced
continuous reductions in groundwater levels, due to agricultural demands, and
where the depletion of the aquifer system is a major water resource issue.
