8/14/1990 - Laserfiche WebLink

Home Browse Search

AUG 14 1990 vqt Fred Halback of Herbert Halback, Inc., referred the Board to the following memo entitled Impact on Utilities: ... The existing 6" cast iron water main along the east side of 15th Avenue between 20th Street and 21 st Street will need to be abandoned. Prior to abandonment, a new 6" P.V.C. water main will need to be placed along 21st Street from 14th Avenue tol6th Avenue. Fire flow for -the courthouse can come from the 8" water main on the 20th Street or the new 6" water main installed along 21 st Street. Sanitary Sewer The existing 15" gravity sewer main through block 44 will need to be replaced with a concrete encased 15" P.V.C. gravity sewer main, similar to the new library. Also, depending on the location of the courthouse building, the existing 8" gravity sewer main through block 45 may need to be relocated. Sanitary sewer service for the courthouse can be supplied by the sewer main through block 45 or block 46. The main electrical supply lines run east and west along 21st Street and 23rd Street. There are smaller service lines which can be abandoned or rerouted in block 46 and 45. The existing facilities are as submitted in our the Master Plan document submitted earlier. The legal positive outfall for this concept will most like by the existing system along 21st Street from 16th Avenue westward. The existing culverts will require evaluation and possibly enlarging the culverts or simply replacing the culverts. As of July 13, 1990, the Indian River Farms Water Control District has established the following criteria for a 25 year - 24 hour storm event. The maximum discharge from any site shall be limited to 2 inches in a 24 hour period: This criteria applies to the proposed development and will have an effect on the drainage facilities. Since this area exhibits an exceptionally good percolation rate, it is still felt that an underground exfiltration trench will be an acceptable method. However, in addition to the local Drainage District's new requirements, the St. Johns River Water Management. District is creating new criteria for an underground exfiltration trenches. With all of these new rules, it may be necessary to combine with some above ground storage areas. The actual building and new impervious areas --must be known, and a preliminary design performed. Additional Property may be required. All of these rule changes are very recent and are still being established. 15a