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HomeMy WebLinkAboutItem No. 10 PPP Project P2-110 " `_ - _ ' _ err � --1_- .._�-}� .:1 �i ' � � _ ,�y :� '• I� I� �ej' 1 - r - `� November2018 1 I !T 49 Nam LM t4l J f I, N am L r VL VL ol 1 C� -ILW P2 =98A Future Construction Area •�.a PRIMARY SLUDGE PRIMARY CLARI�:IFRS DrE STATION D/E ELEC IHICAL Al:ll DJNG qL 1dC PC-D PAGE JF. t _ EN A 'IJ�Y PC-G PRIMARY CLARIFIERS F,'G - P EL_FCTR+CAL BUTLDING PRIMARY SLUDGE PUMP �.1. STATION FIG VB-4 DC-F - - I�8' PIJS WASTE SIDESTREAM PUMP STATION C ► JN?4 a Demolition Work o � � f ra __ ��� tom^ - - e::Ge. s �' _ ��i1.....CII�. "_♦^.' � . _ . T�v RT 4 �1. • I T syg? .Fi a � R �: �O-C1WRA-]�? �9 et9 ' OgD� o�Q SC-03 Major Construction Changes • Unidentified and unknown utilities - $240K • Hazardous materials not anticipated - $89K • Isolation of structures for demolition - $ 102K • Added pipeline demolition work — $ 166K • Added air compressor identified in the Plant Air System Master Plan, an urgent need - $212K • Existing motor control center retrofit - $33K Major Construction Credit Changes • Conduit Routing Tunnels — ( $83K) . • Eliminate Electrical Ductbanks — ( $64K) • UPS Distribution Program Coordination — ($ 220K) • Pavement Credit due to P2-98A Project — ( $TBD) Contract and ContingencyStatus Contract Status Original Construction Contract $16,730,000 Current Percent Complete 60% Projected Final Completion August, 2019 Contingency Status. Amoun-ta; Authorized Contingency $1,338,400 8.0% Approved Changes $576,400 3.4% Pending Changes $647,500 3.9% Remaining Contingency $114,500 0.7% Additional Contingency Requested $836,500 5.0% Total Requested Contingency $2,174,900 13.0% CIP Program Construction Contingency • Construction change order rate since 2008 is 5 . 3%. • CIP Program risk is increasing due to unknown conditions in rehabilitation and collections projects. • Significant efforts reduce risks in design where it is cost-effective . • Utility searches, updated technology • Design and constructability reviews Recommended Action • Approve a contingency increase of $836,500 (5%) to the construction contract with Flatiron West, Inc., for a total contingency of $2, 174,900 ( 13%) . -:� Ali 11 _f��f - _ "�CC�:iA 1 1 ' �� a