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i r . Guilarte Residence-Claim No.354110 HCE Report No. 100091.1 Page No.3 Pasco County Property Appraiser Data Tlie Pasca County Pro�erty Appraiser's website in h�des data on the subject structure. Colnznoniy,the property a�praiser's website contains infonnation about tlie tructures consh��ction,additians,canstruction sequence,and value. Tl�e property a�praiser's praperty record in ormation is attaciled in tlpz�e»clix E. Flarida Geological Sttrvey Sinkl�ole Database The Florida Geological Survey maintains a databas of lcnown subsidence events which are reported as sinklaoie occurrences. The database zs cotnpiled by count and infarznation includes Township, Range and Section, physical street address or directions to a sinkhole si e,clasest city,and date of occurrence. The sinkhole database is not a coinplete listing of all sinlcliales within tlae ounty. It is only a listing of reported sinkhale events known to tize deparhnent and campiled from the fonner�l rida Sinklzole Research Institute. Many of the reports in the database liave nat been verified by a professional; onsequently,many of tlie reparted subsidence events are not actually related to sinkhale activity. The Pasco County data was reviewed far IacaEions f reported sinkholes within the quadrangle sectian of the site and the surrounding sections. The subject site is lo ated in Tawnship 26 South,Range 21 East,Section 12, The eight surrounding sections include sections 1,2, 1 , 13,and 14 from the same township and range,and sections 6,'7,and 18 froxn Township 26 Soutli,Range 22 E st. These sections represent a radius of between one and two rniles of tlie subject site. According to the databas ,four sinkholes were reported within the section or adjoining sections, nat including duplicate entries. This s ggests tl�at the Guilarte residence is located in an area of relatively low sinkhole activity. SWFWMD Sinkhole Brochure The SWFVVMD publishes a short brachure whic provides general information on sinkholes. Tlze brochure describes the types of sinklloles, how they dev lop, comanon misconceptions, warning signs of sinkhole develapment, and proeedures to follow if a si iole fonns on your property. The brochure is included in A,p�endix F of tliis report,to a'id tl�e reader. FIEI,D EXPLORATI4N Overview The follawing paragraphs cantain a general overvi w of typical sinkhole explorations. The process for explpring sinkhole clailns is rnulti-phased including a site vi it and an interview with the l�azneawner,geophysical testing, direct saxnpling, and laUoratory testing. T11e process for exploring sinlciiole claims is mul '-�l�ased. Tl�e field work coinmences wlien the geotechnical engineer contacts the hoineowner and arranges a ite meeting to gather background infarmatian and review the cunent conditions of tlze structure and property. he candition of the structure and site rnay provide ciues to t11e engineer that will help him design the exploration program. During the reconnaissance of the site,the engineer can begin to consider other possible cal�ses of dan age in addition ta sinkholes. For exalnple,if tlle ha�ne resides on a steep slope or the homeowner has reported r peated problems with sewer l�lockage,then the engineex may madify the scope to il�ciude slope stability analys's or utility leak detectian analysis in additian to the sinlcl�ole investigation techniques. It is important that the ause of damage be esCablished if sinkholes are eliininated as a cause. Following the site reconnaissance,the geophysic 1 phase of worlc is cominenced. The geopliysical exploration generally involves the use of sarne non-invasive xploration znetlaods,sucll as ground penetrating radar(GPR}