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ITEM DATE SUBMITTED BY
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Memorandum
Community Development
Gordon Law, City Engineer
Tim King, Engineering Tech lt 7K
SUP 287-07 /ANN-150-07 CMS Mini Storage
February 15,2OO7
The Engineering Department provides the following comments on a request by Jay Gibbons for theannexation of 5'5 acres of land into the city wiflr c-i icomlrrity commercial) zoning, a
fiI[1"#?:|,:,HE 3',:3?f;:l and a Speciar u;Fil;iio deverop a mini'Jo,"se unit rhe
This annexation is subject to a development agreement.
1' south 1oth Avenue is classified as a MinorAtgri?1. The applicant shall be required to dedicateas public right-of-way a forty (40) foot o11 h."Jf *,otn iigntlof-way atong the south 1 gth Avenuefrontage (m inus exisiing) to-meei Ciiv or caroweiirequlrements.
2' Laster street is classified as a collector. The applicant shall be required to dedicate as publicright-of-way a thirty-three rgsjrooioie harf *idi[;,di-#*ry arong the Lasrer street frontage(minus existing) to meet CjtV bf CafOweff requirements.
1' The applicant shall improve south 1Oth Avenue to include a 26.ofoot half- width street sectioncenter-line to back of curb and 5 foot sidewalk. Th; ;tiJet shall feature standard vertical curband gutter' 5 foot sidewalks, sub-base and asphalrpiving, required storm water drainage
l?il:ilt'd streetlights' These impiovements are to extend tre entire iengih ortne subject
2' The applicant shall improve Laster street to include a 2o.Sfoot half- width street section center-line to back of curb plus 5.5 additional feet of p;;;;;"tio provide a two directionar traversurface' The street shallfeature stanoaro vertlcal .rro
"ro gutter, 5 foot sidewalks, sub-base19-i:?!-"lt paving, required storm water drainage ir.iml". and streeilights. Thesermprovements are to extend the entire rength of ihe ;;;j;ct property.
3' Any approaches on South 10th Avenue and Laster streetwill be required to comply with ACHDintersection and driveway spacinj rno "tignr""i .t*orios as adopted by the city of catdweilat a minimum. The proposed acc6ss poinis.pp""iio r*et these requirements.
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4. The applicant will be responsible for the bridge improvements along the Laster Street alignment
at the Phyliss Canal.
Development Plans
1. Development Plans - Prior to commencing construction, plans must be prepared by the
developer's engineer and approved by the City Engineering Department which shall include the
following items:
a. Street section and alignment (including curb and gutter);
b. Sidewalk (5 foot minimum on South 1Oth Avenue and Laster Street);
c. Sanitary sewer (per City and DEQ requirements);
d. Potable water (per City and DEQ requirements);
e. Stormwaterfacilities (per City Policy);
f. Street lighting (at intersections and maximum spacing of 350 feet and must meet ldaho
Power design standards plus conform identically to the lamp, ballast, and sensor switching
equipment used by ldaho Power or City Engineer approved alternative);
g. Street signage (per City and MUTCD requirements);
h. VerticalDatum based on NAVD 88 Datum
General
1. Appropriate easements for drains, canals or supply ditches, transmission lines, and other
utilities shall be clearly indicated on the proposed construction drawings.
2. All street, sewer, water, fire protection, and street light facilities must be dedicated to the City.
Some conveyance facilities for stormwater drainage may be eligible for dedication to the City
3. Construction of dedicated facilities is to be performed by an appropriately licensed public works
contractor and constructed to City of Caldwell specifications.
4. Prior to commencement of construction in any dedicated right-of-way, or construction of any
improvement intended for dedication to the City or connected to a City facility, the City
Engineering staff is to be notified. This preferably will take place in a pre-construction
conference scheduled by the engineer of record in which all appropriate personnel and utilities
are present. Appropriate City personnel are to be notified in advance of all testing (including
compaction, pressure and coliform, etc.) and given opportunity to be present during conduct of
the testing. The engineer of record or his designated representative is to witness alltests and a
log of inspection visits and testing results is to be kept by the engineer of record or his
representative.
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5. The developer is to employ a responsible design professional, preferably the engineer of
record, to oversee and inspect construction, to perform and/or observe all requisite testing of
completed facilities, and to certify that improvements have been constructed according to
approved plans and in compliance with applicable City, State, and Federal standards.
6. The engineer of record shall be held responsible to ensure that the developments
improvements are in substantial compliance with said engineer's design. Following the
construction of the developments improvements, the developers engineer shall provide the City
of Caldwell Engineering Department with reproducible Mylar As-built plans suitable for blue-line
reproduction for future reference and to establish that the engineer of record has caused
construction to occur in substantial compliance with the design of said engineer of record.
lrriqation
1. lrrigation water for any and all landscaping shall be obtained from applicable lrrigation
District sources.
2. The developer shall maintain any existing upstream drainage rights and downstream
irrigation water supply rights across the property. During the design phase of this project,
the developer or his engineer is to contact the appropriate irrigation district to help ascertain
these rights. These rights shall be shown in full, topographically, and submitted for review
along with the developments proposed construction drawings. Appropriate facilities to
convey irrigation and drainage water across the property to take care of any offsite needs
shall be included. There is to be no discharge of gravity irrigation return water into the
subdivision storm water system.
3. Conveyance systems are subject to irrigation district and City of Caldwell design review and
approval.
Storm Drain
1. As noted previously, provision is to be made for the disposal of stormwater drainage in
accordance with the City Stormwater Management Manual and any updates adopted
subsequent to this application. lt is to be noted that retention designs will be denied in most
instances. A copy of this policy is available upon request. The engineer of record is to provide
calculations, which indicate that the assumptions in his stormwater drainage plan comply with
the requirements of the stormwater manual. For any off-site discharge, approval for design of
the outfall from the agency responsible for the receiving water body is required before final plat
approval.
Sewer
1. The site will be required to comply with the Dixie Master Plan as updated which includes the
installation of a 10" trunk line along the Phyllis Canal alignment. The location of sewer service,
including sizing of mains, providing of easements, frontage construction, and offsite
construction are to be decided during review of improvement plans. All weather surfaces may
be required adjacent to mainlines that fall outside public right-of-way.
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2. Any easements for sewer lines not in the right-of-way shall be at least 20 feet in width.
Easements for adjacent sewer and water lines not in the right-of-way shall be no less than 30feet in width.
Water
1. The location of water service, including sizing of mains, providing of easements, frontage
construction, and offsite construction are to be decided during review of improvement fllans.This development will be required to comply with the Water Master Study. bity standards
require that all new developments construct 12- inch water lines along all section and quarter
section lines.
2. All on site water mains will need to be looped into existing mains for fire flow and water quality
purposes. lnternal main sizing and construction plan appioval, will be dependent upon the
availability of fire flow.
3. The applicant will be required (where applicable) to extend all water mainlines to the center ofadjacent roadways for connectivity by future developments. Locations of said extensions will bedecided during the review of the improvement plans.
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