RFB - COUNTYWIDE CULVERT REPAIR AND REPLACEMENT

April 8, 2019
PPRREEPPAARREEDDBBYY::
U TI LIT Y SURVE YOR S, INC.
AIRX Project #: X190104
Project Name: Culvert Repair and Replacement Task Order No. 20
Utility Locating and Potholing Area:
San Diego, CA
PPOOTTHHOOLLIINNGG RREEPPOORRTT
2534E.ElNorteParkwaySuiteC I Escondido,CA92027 I P.760.480.2347 I F.760.739.8034 I airxus.com

TABLEOFCONTENTS
1. DescriptionofPothole ProceduresandSite-SpecificDetails
2. PotholeProjectMap(s)
3. PotholeLocationMap(s)
4. PotholeTabulationReport
5. PotholeData Sheet(s)
6. Permit(s)
AIRX UT ILIT Y S U RVEYORS, IN C.

Description of
Pothole Procedures and
Site Specific Details
A IRX UTIL ITY S UR V EYOR S, IN C.

DESCRIPTIONOFPOTHOLEPROCEDURES
AIRXUtilitySurveyorsperformsafullrangeofspecializedengineeringservicesincludingUndergroundUtilityLocation
andVacuumExcavation(toverifydepthandalignmentofundergroundutilities).
UndergroundUtilityLocationemployssophisticatedelectroniclocatingdevicestotracetherouteofanunderground
utility;thentherouteismarkedonthesurfacewithmarkingpaintinpavedareas,orwith60pennynailsandfeathers
inunpavedareas.
Vacuumexcavation employs avacuumtruckin conjunction withhigh-pressureairorwater toexcavatematerialand
exposeanundergroundutility.A10to12-inchdiameterholeisfirstcoredorchiseledthroughthepavementsothat
thevacuumhoseandhighpressureairorwaterhosecanbeinserted.
Utilities found during potholing are located on the surface by placing two reference points (typically 36" apart) on
either side of the pothole along the centerline (or edge) of the utility, using paving nails or 60 penny nails as
appropriate. Depth measurements (to the nearest 12 inch) are taken midway between the two reference points.
Utilityalignment,depth,andotherdataismarkedwithpinkpaint(onpavement),oronwoodlath(unpavedareas).
SITESPECIFICDETAILS
AIRXwascontractedbythecountyofSanDiegotoperformutilitylocatingandpotholingservicesatacrossSanDiego
County,California. Atotalof27potholeswereexcavatedtoestablishconflictsandconnectionpointsonavarietyof
utilities. Theresultsofthedataarecontainedintheattachedspreadsheetanddatasheets.
In preparation of these excavations, AIRX marked out the dig locations and called in for USA (Underground Service
Alert). All trafficcontrolplans and permits were drawn and applied for by AIRX and all traffic controlwas set up by
AIRX.
Allof theexcavations anddiscoverywentwithoutany incidentexceptforpotholes 19-A and 31-A, whereadditional
potholes were added in order to locate the desired utility. Any changes and adjustments are mentioned in the
PotholeTabulationReportandthePotholeDataSheets.
During the excavations, some potholes were cancelled upon request, or because the utility was out of conflict, or
foundinanotherpothole.Pleaseseebelow:
* Pothole7wascancelledbecausetheutilitywasfoundinPothole2
* Pothole4wascancelledbecausetheutilitywasfoundinPothole5
* Pothole14wascancelledasitwasoutofconflict
* Pothole17wascancelledduetothetelephoneutilitybeingoutofconflict
* Potholes22,24and25werecancelledperclientrequest

All the results were annotated on the ground and in this report. It is AIRX's recommendation that all pothole
locations and the active mark out should be surveyed to aid in the adjustment of utilities on the final plan and
profile.
At eachpothole location, the utility alignmentwas marked with pinkpaint, as well as paving nails or feathers. AIRX
usedpotablewateracquiredoffsiteforexcavationandallwaterandmaterialvacuumedwasdisposedofoff-site. No
water was allowed to flow into storm drains or natural drainages. The potholes were covered with clean backfill
material and compacted to 95% density in 3" lifts. The pavement was patched with an equal thickness of
replacementasphalt. AllfieldworkwasperformedbetweenMarch12,2019andApril1,2019.
AIRX UT ILIT Y S U RVEYORS, IN C.

Pothole Project Map(s)
A IR X UTIL ITY S UR V EYOR S, IN C.

POTHOLEPROJECTMAP1:CulvertRepairandReplacementTaskOrderNo.20
POTHOLELOCATIONMAP 1
PROJECTLOCATIONSAREAPPROXIMATE
POTHOLE
PROJECT
MAP
1

POTHOLEPROJECTMAP2:CulvertRepairandReplacementTaskOrderNo.20
POTHOLELOCATIONMAP 2
PROJECTLOCATIONSAREAPPROXIMATE
POTHOLE
PROJECT
MAP
2

POTHOLEPROJECTMAP3:CulvertRepairandReplacementTaskOrderNo.20
POTHOLELOCATIONMAP 3
PROJECTLOCATIONSAREAPPROXIMATE
POTHOLE
PROJECT
MAP
3

POTHOLEPROJECTMAP4: CulvertRepairandReplacementTaskOrderNo.20
POTHOLELOCATIONMAP 4
PROJECTLOCATIONSAREAPPROXIMATE
POTHOLE
PROJECT
MAP
4