Based on topographical survey, biological data, and some social and economic aspects, the writers strongly recommended that the pilot project should be implemented outside the bund. The low pH of the surface soil inside the bund as observed indicated that the pond constructed inside the bund will consequently have problems of acidity. The pond with low pH, either due to reduction of sulfate or ferric oxide or hydroxides will yield low production. The problem though could be remedied by applying lime or by other techniques as mentioned in Section 4.1. This will inevitably increase the operation costs. Aside from increasing the operation cost, the ponds also require a considerable time before it could be operated with the maximum sustained yield. The fertility of soil outside the bund is also superior to that inside. This means that less fertilizer is required if the pond is constructed outside the bund.
In connection with social problems, land outside the bund is a forest reserved land. Acquisition of this land is easier when compared to that inside the bund lands that have been allocated to the farmers. No social problems are anticipated. The project can be implemented smoothly and quickly. By constructing perimeter dike outside the bund, the dike will also help to reduce the intrusion of seawater into the land inside the bund. This effect will gradually improve the land inside the bund to a level that farm crops can be grown successfully as envisioned in the initial proposal.
Under certain circumstances if the project has to be implemented inside the bund instead of outside the bund as suggested above, the officials concerned should be aware of problems and limiting factors of ponds constructed inside the bund. Methods to remedy the problems should be prepared not only to solve the problem per se, but its side effect towards the imbalance of pond environments in later period should also be considered.
The hatchery is also of prime importance as a source of shrimp seed for the project. It should be established as soon as the project is implemented. It can be established either within the vicinity of the project site or outside the vicinity of the project where its establishment is suitable. Based on preliminary information obtained from the survey of alternative hatchery sites, Site No. 1 (Fig. 25) in Langkawi Island is comparatively the most suitable among those three sites visited by the authors.
A decision on which site to construct the hatchery will have to be made. Hatchery at or near the pilot project site may be implemented even at a small-scale basis. The production of shrimp fry from the hatchery will not only support the work on the pilot project, but it will also be useful for support of the succeeding phases of development as planned.
Cost Estimates
| Description | Quantity* | Unit | Rate M$ | Amount M$ |
| Ponds | ||||
| Site clearing & destumping | 21 ha | ha | 1 732 67 | 36 400 00 |
| Excavation for canals & ponds & perimeter & secondary dikes | ||||
| Main dike & drainage canal | 29 767 m3 | m3 | 2 50 | 74 417 50 |
| Main canals & secondary dikes | 9 582 | m3 | 2 50 | 23 955 00 |
| Drainage canals & secondary dikes | 4 791 | m3 | 2 50 | 11 977 50 |
| Cut-off trench for main & secondary dikes | 7 685 | lin. m | 6 50 | 49 952 50 |
| Main gate | 1 | no. | 15 000 00 | 15 000 00 |
| Secondary gates | 2 | no. | 8 000 00 | 16 000 00 |
| Tertiary gates | 14 | no. | 1 000 00 | 14 000 00 |
| Pond levelling & tertiary dike | 7 560 | m3 | 2 50 | 18 900 00 |
| Total for Ponds | 260 602 50 | |||
| Quarters & Ancilliary buildings | ||||
| Office & laboratory (1) | 340 | m2 | 280 00 | 78 200 00 |
| Class “D” quarters (1) | 225 | m2 | 200 00 | 45 000 00 |
| Class “F” quarters (4) | 720 | m2 | 179 00 | 122 400 00 |
| Storehouse/bodega | 150 | m2 | 90 00 | 13 500 00 |
| Guardhouse | 10 | m2 | 80 00 | 800 00 |
| Field shelters | 4 | no. | 1 000 00 | 4 000 00 |
| Covered working shed | 150 | m2 | 70 00 | 10 500 00 |
| Class “H” quarters (8) | 640 | m2 | 140 00 | 89 600 00 |
| Total for quarters & ancilliary bldgs. | 364 000 00 | |||
| Pumping Installation | ||||
| Intake channel & sump | sum | 10 000 00 | ||
| Pumphouse | sum | 3 000 00 | ||
| Pumps & prime movers | 2 | set | 10 000 00 | 20 000 00 |
| Electrical installation | sum | 10 000 00 | 10 000 00 | |
| Total for pumping installation | 43 000 00 | |||
| Services | ||||
| Access road | 2 | km | 7 000 00 | 14 000 00 |
| Water supply | sum | 25 000 00 | ||
| Sewerage | sum | 10 000 00 | ||
| Timber bridge | 1 | no. | 2 500 00 | |
| Power transmission lines | sum | 30 000 00 | ||
| Total for services | 81 500 00 | |||
| GRAND TOTAL | 749 102 50 | |||
* Computations are not included in this report.
