Res07 14769 - Laserfiche WebLink

Browse Search

MONITORING _ VERIFICATION IDEN~ED IMPACT RELATED MITIGATION MEASURE Implementation Monitoring and Timing Signature Date ~I ~ Enti Verit"ication Enti Re uirements of dry~~her capacity. The estimated transmission capacity improvement options Maximu ntensity altemative-related listed below, the procedural details of which ADDWF ~rement of 630,885 gpd (0.631 shall be induded in either a project mgd) is lglps than the City's purchase option memorandum or development agreement of 1.915 ~gd. for each project, at the discretion of the City Engineer. In recent gars, wastewater flow into the SSSA cotDac6on system from Redwood City In order to mitigate the limited transmission has occa~stbnally exceeded the current peak capadty during wet weather from the wet weather flow capacity right (exclusive of Predse Plan area to the SBSA treatment Redwood Shores) of 25.9 mgd. Since 1994- plant, implementation of one of the 95, the City has exceeded its allocated following options would be necessary: capacity nine times during the winter. Since the SBSA treatment capadty allocation to (1) Upgrade the influent lifting station at the Redwood City is already being exceeded treatment pant, upgrade the treatment during wet weather, the current allocation plant itself as necessary, install a new from the SBSA is inadequate to serve the gravity sewer line from the SBSA pump projected Maximum Intensity altemative station at Maple Street, and upgrade the ADDWF increment in addition to existing pump station at Maple Street; or SBSA commitments. Because the SBSA treatment capadty allocation to Redwood City (2) Replace 21,000 feet of 6-inch, 3,600 is already being exceeded, the Precise Plan feet of 8-inch, and 2,000 feet of 10-inch Maximum Intensity alternative-related and pipes within the Precise Plan area, and cumulative impacts on yret weather flow 24,500 feet of 6-inch pipes outside the Plan treatment rzpadty are considered to area, fo reduce the wet weather flows. By represent a potentially significant project repladng existing wastewater collection and cumulative fmpac#. pipes, and thus reducing infiltration and inflow, the increase in ADDWF from Precise Plan-related growth would be mitigated, and the wet weather flow would not increase from Ptan-facilitated development. A:~ additional benefit would be the replacement of al! substandard 6- inch pipes with City standard 8-inch pipes. Implementation of this measure would reduce Precise Plan Maximum Intensity alternative and cumulative impacts on wastewater treatment and transmission ca aci to ales-than-si niticant Level. Impact 10-2: Precise Plan-Related and Mitigation 10-2. If the Precise Plan: City; fair-share City Condition of occupancy permit Cun~ative Impacts on Wastewater Moderate Intensity alternative is adopted, reimbursement issuance Treaent and Transmission Capacity-- prior to City approval of any individual from future Mod~a~lntensity Alternative. Preliminary development proposal in the Precise Plan individual estlr~testindicate that the Moderate intensity area, if determined necessa b the Ci rY Y tY ro ect p 1 Pre n aitema6ve could generate a f p Engineer, the City shat! purchase from the SBSA the added treatment capacity applicants. roximately 507,475 gallons o totalYSf average daily dry weather flow (ADDWF) per necessary to accommodate the projected net increase in wastewater enerated b Page 20 U:1My DocumentslUo~wnfown Precise PlartlCC staff reportslCC 3. f2.doc13. f 2.07 Exhibits',Attachment A mit.mon;torng ch2cklis£ 655.doc