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GHD provided design and construction phase services Recommendations for collection system for system repairs, which included: improvements were based upon the most cost-effective projects for abating SSOs. The final – Approximately 58,000 linear feet of cured in place recommendations included a combination of SSES lining of sanitary sewers work, sewer lining, manhole rehabilitation, and lift – Approximately 15,000 linear feet of open cut station capacity upgrades. replacement for sewers with severe structural GHD also prepared a Capacity Management defects Operations and Maintenance (CMOM) program for – Spot repairs at locations with minor defects the Town. The CMOM program is a guideline for – Lateral repairs at locations where the lateral ongoing collection system maintenance, including connection to the main sewer is damaged sewer cleaning, CCTV inspections, flow monitoring, – Manhole rehabilitation including bench repairs, and system testing. The NYSDEC approved the lining, and chimney seal CMOM program and now enforces CMOM activities through the Town's wastewater discharge permit. – Replacement of the 16-inch diameter, 2-mile-long Lift Station 8 forcemain. GHD provided the following services: – Replacement of two intermediate lift stations (LS-5 – Pre-construction flow monitoring and LS-11) and associated discharge forcemains, – System modeling currently underway. – Alternative analysis for SSO reduction At the conclusion of the repairs, post-construction flow – Workplan development monitoring was performed to quantify the effectiveness of I/I reduction and subsequent SSO mitigation. Data – CMOM program development suggest the program has been successful in mitigating – Design and construction phase services for up to 40 percent of wet weather I/I in several mini system repairs systems. – Coordination with the NYSDEC and Order on Consent negotiations The impact A 10-year Workplan was developed for SSES work within the collection system to identify and remove I/I sources. The first component of the Workplan included SSES investigations through smoke testing, dye testing, and CCTV inspection. More than 70,000 LF of sewers were inspected with sizes ranging from 8 to 30 inches in diameter. Based on the results of the inspections, recommendations were made for system repairs. ghd.com Page 181 of 301