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. 2006 PMP Update 1/18/2007 Page 3 GoodPointe Analysis GoodPointc Technology utilized the current pavement condition index (PCI) inf<mnation as well our historical data of street improvement projects to perform pavement management analysis of the strcet systcm in Arden Hills. Thc budget analysis is based on current construction costs and factors in an int1ation rate oLV~,'O. Engineering costs. 20(~/(, of the estimated construction cost, have been incorporated into the unit costs. It should be noted. however, that the analysis is only an estimate, and does not include nny utility (waten11ain. snnitary sewer or stonn sewer) construction costs. casement acquisition costs, or trail/sidewalk construction costs. Also not included arc additional costs that may be incurred for retaining walls, excessive drivcway replacement, right-of-way reestablishment or other costs for areas that may have extreme situations such as signi ficant grade changes. The reason fl.)). this is that these costs vary from project to project and therc is no reliable way to cstimate them. Th~ ma~ntcnance stl~tegy used by G~)OdPOil~r this analysis is b:lsed on categorizing the PCI ratlllgs IIlto adeyuat ~ I (0), marglllal (3 I - _ , and poor (0-30). Streets that are adeyuate receive seal coats, marginal strcets receive a mill and overlay. and poor streets arc reconstructed. Thc type of mill and overlay used in the analysis is a T mill ovcr thc entire pavement section. Streets that havc PCI values bordering two catcgories would be individually evaluatcd to ensure . that the most cost-effective maintenance will occur for the condition of the street. A city strcet map has been included in this report with the existing PCI ratings color coded to the above mentioned categories. Staff asked GoodPointc to c..:aluate the 1()llowing f(lUf buugd scenarios: Scenario .I is budgct driven. dcsigned to project the avcragc pavement condition if $1 million is spent each year on street improvemcnts fl.)r the next 20 years. The cxisting 5-year ell' has been incorporated into the first five years of this model. Over the 20 year period, the average PCI would increase from 64 to 77. Scenario 2 is designed based on the current average PCI (64) and project the level of funding needed to maintain this over the next 20 years. In a budget model that is driven by a benchmark PCI. prcdeten11ined projects cannot be entered. The streets arc selected by the program for maintenance Oil a necds hasis. The results of this sccnario indicate that approximately $ I 4.5 million will need to be budgeted 1':Jr pavemcnt management over the Ilext 20 years. Scenario 3 is based Oil the desirc to increase the avcrage PCI to 75 and determine the level of funding needcd to achieve this over the next 20 years. A PCI value 01'75 is an a\'cragc benchmark among several other cities in the metro area. Again, this model docs not allow for predeten11ined projects, and the program has selected streets on a needs basis. The rcsults of this scenario indicate that approximately S 16 million will need to be hudgeted fllr pavemcnt . management ovcr the next 20 years.