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Home My WebLink AboutSite Certifications - 11/13/1995FOUNDATION ENGINEERING Consulting Engineers, Ltd. October 17, 1995 Commission No.: 1004-25-01-04 Lew Ltd. P.O. Box 271035 Fort Collins, Colorado 80527 Jrah, RE: 2 12 0 f Orchard PlTj— ae Fort Collins, Colorado Gentlemen: P ' We have inspected the finished site improvements at the above referenced project. Our initial site assessment indicated inadequate volume of the detention pond. Our calculations indicate that construction of a speed bump at both entrances would allow for adequate detention pond storage. The height of this berm is indicated on the as -built plans. Additionally,.swales around the back and sides ere not built in accordance with our plan. However, due.to the top of foundation elevations. being well above existing grades at the swales; we feel that water will still be diverted as originally designed.. Obviously, the owner of the project does not want to reconstruct his landscaping in these areas. It is our understanding that he is willing to assume responsibility for any future flooding due to the lack of flow around the back yards. He also is asking for a variance due to slopes of less that two percent (2%) where the swales should have been in lieu of constructing concrete pans as per City standards. Other .than the above,, drainage conformance with our , yo free to call. 3?� .Rf%P�. Respectfully,' 41 Kevin W. Patterson, FOUNDATION ENGIi.I KWP/jle s are in substantial questions, please feel 2384•1 ''�igi�4��.i 'b... of �•''. ENGINEERS, LTD. cc: City of Fort Collins, Attn: Basil 100 East 3rd Street . Loveland, Colorado 80537 • (970) 663-0138 • Fax (970) 663-1660 515 Main Street, Suite C . Longmont, Colorado 80501 • (303) 702-0661 LEW ltd. Henry R Lewandowski Box 8938 Ft. Collins, CO 80525 223-3800 227-3600 City of Ft. Collins Dept. of Stormwater Attn: Glen Nov. 9, 1995 This letter is in regards to the 8-plex property at 2120 Orchard Place, Ft. collins. It is a property at my wife and I are going to continue to own, not a property being built to sell. In fact our permanent financing has been in place for several months now. During the past summer we installed landscaping, and there was never any standing water on it, even though we had the sprinkler system going every 2 days. We will continue to take full responsibility of the run off of surface water and will not hold the city re- sponsible for any such thing. As a matter of fact the property has never had any standing water on it even with all the rain we had in the spring. I trust this letter will help in relieving the city of any concern regarding the drainage of the rear of the property and specifically the NW corner of the It-q-4S property. —r ' Ai,5 /I- sftc W �ac�e LS (%. �� )Ha re � o�n r°tA 04a-s 7` '� ,du.rrfttrt�3, �rc�:� ufax,�s al�'W/`raGl[t? '��C. fJifn /�P..-9GR[+•�litBM/1 �.�SO O�CUGL$� wa owskirLtd. OCT-23-95 NON 12: 01 P. 01 "*. ORCHARD PLACE PUD J6b #1004-25-01-01 October 31, 1995 DRAINAGE CERTIFICATION FORM Please fill out all applicable items in this certification form for single family, multi' -family and commercial properties. Write "OK'' for items checked or actual number checked in field. Use "N/A" for items that are not applicable to the property that is being certified. A. Drainage facilities Certification 1. Pond Certification -volume verification a, topographic records and volume b. cross -sections and spot elevations .i -positive fall to pan -side slopes -inveYt elevation -spillway "elevation -placement and size of riprap -side slopes -grading -orifice plate installation and size -compaction of berm -structural integrity of pond 2. Swales -location (are they within easement) 0 -dimensions and cross-section verification -longitudinal slopes and side slopes JK _r^ -spot elevations Post -it Fax Note 7671 01 oa.� C)'.�3 15 Fay s► s-_ To ' From � P he Phonc 4 Phme @ 7 9 a vv i �,� JU I IVIV I L • UC -permanent erosion control measures (drop structure,,, riprap, etc .... -tie-in to pipes, pans, curbs, etc.... -weir size (elevations, size, opening, etc...) -available freeboard -landscaping infringement on swales 3. Pi es -size and type -slopes (as -built and comparison to minimum 0.0 slope) -Pipe capacity calculations if slopes are significantly altered -invert elevations -installation and backfill material -cover -encasement and clearance from other utility lines close by -joints 4. Concrete Pan Channels N/�" -size -slope -super elevation -cross-section -thickness -elevations 12 Inlets -size and type -size of opening (or name of standard used) -grate elevation -invert elevation -box size 6. Cross_Dan$ -size -type -grade -elevation -cross-sectional depth -tie-in to curb and gutter 7. Culverts -size -type -invert elevation -headwalls 8. Underdrains -size -type -cover -backf ill -geotextiles P�/A -cleanouts g. Curb cuts OK -size 4 -tie in to Swale, pipe, etc.... �— B. Certification of Grad@ Elevations Adjacent to Drainage Facilities: 0I;r -minimum opening elevations �- -top of foundation elevations -comparison to 100 year WSEL's (Freeboard requirements and floodplain issues) C. Certification of Erosion Control Measures: 1. Permanent Measures: -permanent vegetation (6" bare spots and weeds under control) l� / -riprap -riprap bedding -drop sections -sediment basins/water quality ponds -netting mats/blankets `- -mulching r. U I -inlet filter inste Iatic:r. -check bale dams -seeding and temporary vegetation -silt fence D. Site Cleanup After Construction -construction clean up -smoothing of ruts -reseeding E. Statement of Compliance 1 v� pAP-14 1, j� iJ3of;- This certification is signed and stamped and by signing this form the engineer(s) attests that to the best of his knowledge the as -built conditions of the drainage facilities are as -.-- described in the above form and in the redlined plans enclosed. Failure to properly disclose ail known information could result in the rejection of this certification and prevent the release of any Stormwater Utility holds on Building Permits and/or Certificates of Occupancy. F. Signature and Stamp Engineer. fistered Professional / 00T-23-95 MON 12:01 P. 01 ORCHARD PLACE PUD Job #1004-25-01-01 October 31,_1995 1 DRAINAGE CERTIFICATION FORM A: l Please fill out all applicable items in this certification form for single family, multi' -family and commercial properties. Write "OKI' for items checked or actual number checked in field. c Use "N/A" for items that are not applicable to the property that is being certified, A. Drainage facilities certification 1. Pond Certification -volume verification D-L a, topographic records and volume b. cross -sections and spot elevations Q�L -positive fall to pan Dt -side slopes OK -invest elevation O K -spillway elevation QL -placement and size of riprap .LEA -side slopes -grading -orifice plate installation and size Ok:(S io) -compaction of berm P* -structural integrity of pond 46 2. Swales -location (are they within easement) 04- 00 SWALVE5 OR, ►ijAJR- fj uo4e Swai*S t>\J lea 2 -dimensions and cross-section verification Y02_0_ /6w� LvILL -longitudinal slopes and side slopes - p►QovtCQ Lg -spot elevations Post -if Fax Note 7671 DR'e r%-� i �5 F 47[:,► S- To. From ' eutn 1C u ci^ Co./Depi. Co. y SI`YM,-,,aIT►^ Plvntr q Phc.ne Y 7' u - e� e-5 4 .,y'' I i"M I C UC P. 02 -permanent erosion control measures (drop structures, riprap, etc )� -tie-in to pipes, pans, curbs, etc.... -weir size (elevations, size, opening, etc...) -available freeboard Q41_ -landscaping infringement on swales 3. Pipes -size and type -slopes (as -built and comparison to minimum 0.4%- slope) -pipe capacity calculations if slopes are significantly altered -invert elevations -installation and backfill material -cover -encasement and clearance from other utility lines close by -joints 4. Concrete Pan channels -size _UA -slope -super elevation -cross-section -thickness -elevations S Inlets -size and type _, -size of opening (or name of standard used) lk -grate elevation -invert elevation I c -box size i 6. Cross pans -size -type�� -grade -elevation V -cross-sectional depth Q-k -tie-in to curb and gutter -iLJA 7. Culverts S�bWALk -size OK__ -type JD)C:- -invert elevation -headwalls B k 8. Underdrains -size -type -cover -backfill -geotextiles - -cleanouts 9. Curb cuts -Size -tie in to Swale, pipe, etc.... B, certification of Gradq Elevations Adjacent to Drainage Facilities: -minimum opening elevations -top of foundation elevations -comparison to 100 year WSEL's (Freeboard requirements and floodplain issues) C. certification of Erosion control Measures: 1_ Permanent Measures: tation (6" bare spots and weeds -permanent vege under control) -riprap pT SimWIL-K r✓LVIErZT -riprap bedding -drop sections -sediment basins/water quality ponds -netting mats/blankets -mulching .JA JOIL. Oil A ilit"N -inlet: filter instuiic .ii;ta �JA -check bale dams QA -seeding and temporary vegetation -silt fence A. Site Cleanup After Construction -construction clean up -smoothing of ruts k_ -reseeding E. Statement of Compliance This certification is signed and stamped and by signing this form the engineer(s) attests that to the best of his knowledge the as -built conditions of the drainage facilities are. as. described in the above form and in the redlined plans enclosed. Failure to properly disclose all known information could result in the rejection of this certification and prevent the release of any Stormwater Utility holds on Building Permits and/or certificates of occupancy. F. Signature and Stamp by a..Colorado Registered Professional Engineer. FOUNDATION II Consulting ENGINEERING Engineers, Ltd. October 17, 1995 Commission No.: 1004-25-01-04 Lew Ltd. P.O. Box 271035 Fort Collins, Colorado 80527 RE: 2120 Orchard Place, Fort Collins, Colorado Gentlemen: We have inspected the finished site improvements at the above referenced project. Our initial site assessment indicated inadequate volume of the detention pond. Our calculations indicate that construction of a speed bump at both entrances would allow for adequate detention pond storage. The height of this berm is indicated on the as -built plans. Additionally, swales around the back and sides were not built in accordance with our. plan. However, due to the top of foundation elevations being well -above existing grades at the swales, we feel that water will still be diverted as originally designed. Obviously, the owner .of the project does not want to reconstruct his landscaping in these areas. It is our understanding that he is willing to assume responsibility for any .future flooding due to the lack of flow around the back yards. He also is asking for a variance due to slopes of less that two percent (2%) where the swales should have been in lieu of constructing concrete pans as per City standards. Other than the above,. drainage facilities are in substantial conformance with our ,,� you 'haa've� any=,questions, please feel free to call. Respectfully, r" —. 0841 23841 Kevin W. Patterson,' i1iaA1 E�,,,o' FOUNDATION ENGINEF,RI OFF"" I ENGINEERS, LTD. KWP/jle cc: City of Fort Collins, Attn: Basil 100 East 3rd Street . Loveland, Colorado 80537 . (970) 663-0138 • Fax (970) 663-1660 515 Main Street, Suite C . Longmont, Colorado 80501 • (303) 702-0661 FOUNDATION II Consulting ENGINEERING Engineers, Ltd. October 17, 1995 Commission No.: 1004-25-01-04 Lew Ltd. P.O. Box 271035 Fort Collins, Colorado 80527 RE: 2120 Orchard Place, Fort Collins, Colorado Gentlemen: We have inspected the finished site improvements at the above referenced project. Our initial site assessment indicated inadequate volume of the detention pond. Our calculations indicate that construction of a speed bump at both entrances would allow for adequate detention pond storage. The height of this berm is indicated on -the as -built plans. Additionally, swales around the back and sides were not built in accordance with our plan. However, due.to the top of foundation elevations being well above existing grades at the swales, we feel that water will still be diverted as originally designed.. Obviously, the owner of the project does not want to reconstruct his landscaping in these areas. It is our understanding that he is willing to assume responsibility for any future flooding due to the lack of flow around the back yards. He also is asking for a variance due to slopes of less that two percent (2%) where the swales should have been in lieu of constructing concrete pans as per City standards. Other than the .above, drainage facilities are in substantial conformance with our �f ..you have any questions, please feel free to call. `a�►`� .._....�''-, Respectfully,�'�O NtiEP j90 ��` Kevin W. Patterson FOUNDATION ENGINE RI ING ENGINEERS, LTD. KWP/jle cc: City of Fort Collins, Attn: Basil 100 East 3rd Street • Loveland, Colorado 80537 . (970) 663-0138 • Fax (970) 663-1660 515 Main Street, Suite C . Longmont, Colorado 80501 . (303) 702-0661 FOUNDATION ENGINEERING CONSULTfNG 'ENGINEERS LTD. 100 E. 3rd Street LOVELAND, COLORADO 80537 (970) 663-0138 PRODUCE2041(We9[em(E05.7(PaOK®akk Gmbh.Mm.01I11.TOONef PMNk TOLL FRB I-M225-6W SHEET CALCULATED BY DATE CHECKED BY S[:AI F DATE i CUT � , V RE4D -38442490 fF I VACT -(F ? V }NAG F L y.� AN. VTI LIjL( �L,q}J G Z 4R.Ae.) A IMI G /� I I I. o R al27 CFSII.ZRS IQT3I 900 LQ5Z I �� /0. O `\0�� FLACE Qroo A �. .. as J 95 A52 a .I c� a=O.ncp (PNORT'i to z� A RCRIe I'•�o' ox -L PLI.YI rL\ITHToi Hl HILL ft 'go PLAIN /M ate.: J. 15 ECTI0NAA '. A To SECTM B-Brem M. VIA I TV To AIM ,TV,I ME I AL SIDEWALK CULVERT FOR DRIVE OVER CURB CUTTEI AMP SIDEWALK by CITY OF FORT COWNS.ORADO KS 4 or. J41,01i m 1 I9ddP}.. A rs (M [t-11 010 All To, toy W Able to Very. to tmi oo oV.L AT toy tion, „Y w �,.. w-:� w,A? III IwIl rolyi ... all I, To by .n...e• w ..R.. VA g7 wrote, OF) III oi e. 1.11 eAAe.e wo A e.4 em., u te B. ITT A, w comb u, AM.rtrty A rN. eM. .. over _.n V. ,, e.f Y.e w ..lam v... 1. 1, too 11. W top toy, orroflo'beek 1.Terr Wt000I �; u„Y. City of POI Cu'11_s nr.s-1- LT11...C[✓✓✓Y��fPLAN APPROVAL AwRCKD d � LL/1Zf( FrowRn � �^41 P 'r..[ED RV . •�9eh .�/4r.Y.r¢rAwB. y OI& :,Y' U O i w I n �a 1 0 o a Z z U� F- Z IV1 * 9 W Id ul �z 0 R2 0;7 ❑Z_ toll L OzV �0 UmW" JDP ND. +u '- I_ DATE 8/9/93 SCALE I=io DRAWN KP CHECKED - SHEET NO,, i Dv i