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® 4 <br /> ® p `+'J <br /> ® GVn d Calvin, Giordano & Associates, Inc. <br /> E Y l E P 1 I O N A l SOLUTIONS <br /> • <br /> ® SURFSIDE SANITARY SEWER EVALUATION STUDY <br /> • Surfside, Florida <br /> �" <br /> ® ki <br /> „ i ' . .,.2- - " .. - 2 1_,, Client <br /> • <br /> o ' „4{a tc 14 Town of Surfside <br /> o i' <br /> .r.-I x�:� , P+ Cr a <br /> ® } t AS •-.:4 Hr. <br /> ; ei i k" y > Contact information <br /> ® F ` + z at <br /> c' -i-t,41,0� • i �'4 3� at time of project: <br /> ® , <- ' �`' r . j {Rk. j{4a+r„c, L tl�_, 1 'l ., Roger Carlton <br /> yr �`/f ' , {+ •. ; r, $ ;,+t' -�- , !. #4, <br /> -4'' Town Administrator <br /> ill® 1 'Tie . �51.v"/ ) ; :.'� 5. .tr i s ` t3? � d, 9293 Harding Avenue <br /> ( , 4. s. <br /> F "i%;.=4:1 at Surfside,Florida 33154 <br /> ® � i j 3. <br /> S 4 .. i u9 ttI. „ , "PS. °vg a, 1 '<' (305)861-4863 <br /> ! ' '' t k q. pr r9 �r'Cerra ��r <br /> ® � l t-� F'. A lr vt..f I' ` v' ..-r Project Date <br /> ,F . to j Pt <br /> ! •. I a ,i^aR 2008 <br /> ® 11r St' , t • R-4.3 . iy I�-. iz ( ' Zai. Principal in Charge <br /> 11 p <br /> C. t ',` .e!1, L, 4C,. ~ '' g' ,' P. (:�` Dennis J. Giordano <br /> e ;i •e • `= illea# - �• "1114; 44Project Manager <br /> ® <br /> •4. • .... z:r +, Karl Kennedy,PE <br /> ° air: <br /> '' Services Provided <br /> ® The Town of Surfside operates a municipal sewage system collection and transmission Engineering Studies <br /> ® system, installed in 1948. The sewer collection system is divided into two Planning <br /> ® section/basins; one serves the northern portion of the city and the other serves the <br /> O southern portion. Each basin has a centrally located pump station, each of which CGA Fees <br /> discharges to the shared force main transmission line for final treatment at the Virginia 520,000 <br /> ® Key sewage treatment plant. Original materials were vitrified clay gravity main and <br /> ® service lines. Force mains have been upgraded to PVC. The two pump stations were Construction Cost <br /> ® last rehabilitated in 1988, with the addition of stand-by emergency power generators, NA <br /> pump water seals and flood proofing. Excessive flows within the system were noted, <br /> el especially during and shortly after periods of intense rainfall. <br /> ® CGA was hired to address the problem and performed a Sanitary Sewer Evaluation <br /> ® Study (SSES) for the system.We performed the following: <br /> 0 <br /> ® A. Described the existing system and discuss its history <br /> B. Reviewed and analyzed existing flow records <br /> ® C. Divided the collection system into subsystems and identified the key manholes <br /> ® which were located at the outlet of each subsystem <br /> D. Monitored flows to key manholes and compared them to the expected sewer <br /> ® flows from the subsystems. <br /> Ij® E. Identified problem subsystems and determined if further study was needed. <br /> ® F. Determined whether the excessive flow problem was due to infiltration or <br /> inflow (or both) and decided the appropriate time period of the year to monitor <br /> ® the problem subsystems. <br /> 0 G. Defined the Infiltration/Inflow (I/I) problems Page 21 17 <br />